BASE STATION, METHOD TO UPDATE A COMPONENT CARRIER, TERMINAL, AND COMMUNICATION SYSTEM

专利摘要:
base station, method for upgrading a component carrier, terminal, and communication system. a method, base station, terminal and communication system for updating component carriers are provided. wherein, terminal, base station and/or component carrier status information is acquired; whether the state information agrees with the predetermined condition is determined; an old component carrier is replaced by a new component carrier, or a new component carrier is added in the event that the predetermined condition is met. with embodiments of the present invention, the component carrier that the terminal would use is updated more effectively.
公开号:BR112012025577B1
申请号:R112012025577-0
申请日:2011-04-02
公开日:2022-02-01
发明作者:Yuxin Wei
申请人:Sony Corporation；
IPC主号:

专利说明:

FIELD OF THE INVENTION
[001] The present application generally relates to the field of wireless communication, and in particular to the field of carrier aggregation communication. More particularly, the present application relates to a method for selecting a component carrier and a method for updating a component carrier in a carrier aggregation communication network. The present application further relates to a device for implementing the above method, including a base station, a terminal, and a communication system including the base station and the terminal. BACKGROUND OF THE INVENTION
[002] The future LTE-A (Long Term Advanced Evolution) system will support a transmission bandwidth of up to 100 MHz. However, the maximum supportable transmission bandwidth in the LTE (Long Term Evolution) standard is 20 MHz, and thus it is necessary to aggregate the multiple carriers to achieve wider transmission bandwidth. Carrier aggregation is a technique proposed by 3GPP (3rd Generation Society Project) to aggregate multiple carriers for joint transmission, thus to support the higher demand on transmission bandwidth by future mobile communication systems. According to the position of carriers to be aggregated in the frequency spectrum, carrier aggregation can be classified into continuous carrier aggregation and non-continuous carrier aggregation, and LTE-A supports both of the two aggregation scenes simultaneously. While introducing carrier aggregation technique, 3GPP also takes backward compatibility into account. This means that for a long period of time in the future, endpoints that support carrier aggregation and endpoints that do not support carrier aggregation will coexist, endpoints that support carrier aggregation can access multiple carriers at the same time, and endpoints that do not support aggregation carriers can access only one carrier.
[003] To simplify radio resource management in the carrier aggregation scene, a primary component carrier (PCC) concept will be introduced in LTE-A. Therefore, bearer administration in the bearer aggregation scene will evolve from distributed administration to centralized administration. Thus, the primary component carrier will necessarily have functions that a common carrier does not, playing an important part in radio resource management.
[004] Naturally, the carrier corresponding to the cell for initial terminal access is selected as the primary component carrier. However, with the increasing demand on quality of service by the user, it may be necessary to add a new carrier to form the carrier aggregation. With variation in terminal, base station and network conditions, it is also possible to replace or suppress some carriers in use. Because of user movement and the difference between the performances of the carriers that are aggregating, it may be necessary to reassign the primary component carrier. SUMMARY OF THE INVENTION
[005] Hereinafter, a brief summary of the present invention will be given, so as to provide a basic understanding of some aspects of the present invention. It is to be understood that this summary is not an exhaustive summary of the present invention. It is not intended to determine the fundamental or important part of the present invention, or to define the scope of the present invention. It only aims to give some concepts in a simplified form to serve as a preface to the more detailed description discussed later.
[006] An objective of the present application is to provide a method and a device for selecting a component carrier, including a base station and a terminal. A further objective of the present application is to provide a method and a device for updating a primary component carrier, including a base station and a terminal; a method and device for adding a secondary component carrier, including a base station and a terminal; and a communication system including the base station and the terminal.
[007] Thus, in accordance with a first aspect of the present application, a method is provided for selecting a component carrier in a carrier aggregation communication network, the method including: determining a coverage range of each available carrier that can be used by a terminal; determining whether a distribution of the different available carrier coverage bands agrees with a predetermined distribution mode; and determining component carrier to be used at least according to a rule that is decided by the mode of distribution, in the case that the distribution of the coverage bands of different available carriers agrees with the predetermined mode of distribution.
[008] In accordance with another aspect of the present application, a method is provided for updating a primary component carrier in a carrier aggregation communication network, the method including: determining a new primary component carrier with the method of the first described aspect above; and transferring in pass from an old primary component carrier to the new primary component carrier.
[009] In accordance with yet another aspect of the present application, a method is provided for adding a secondary component carrier in a carrier aggregation communication network, the method including: determining a new secondary component carrier with the method of the first aspect described above; and add the new secondary component carrier.
[0010] In accordance with yet another aspect of the present application, a device is provided in a carrier aggregation communication network, the device including: a terminal information acquisition unit for acquiring position information from a terminal and/or carrier distribution information corresponding to the position of the terminal; a carrier distribution mode determining unit for determining whether a distribution of the coverage bands of different available carriers corresponding to the position of the terminal agrees with a predetermined distribution mode; a component carrier determining unit for determining a component carrier to be used at least according to a rule that is decided by the distribution mode, in which case the distribution of the coverage bands of different available carriers corresponding to the terminal position agrees with the predetermined delivery mode; and a notification unit for notifying the component carrier determined to be used to a counterparty device.
[0011] Wherein, the component carrier can be a primary component carrier, and it can also be a secondary component carrier.
[0012] The former device may be a base station, and where the counterpart device is a terminal that communicates with the base station.
[0013] The above device can also be a terminal, and where the counterpart device is a base station that communicates with the terminal.
[0014] According to a further aspect of the present application, a communication system is further provided including the aforementioned base station and/or terminal.
[0015] According to the various previous embodiments, it is possible to reasonably select the component carrier to be used.
[0016] Another objective of the present application is to provide a method for updating a primary component carrier, and a corresponding base station, terminal and communication system.
[0017] Thus, in accordance with an aspect of the present application, a method is provided for updating a primary component carrier in a carrier aggregation communication network, the method including: acquiring status information from a terminal, a base station and/or a primary component carrier; determining whether the state information meets a predetermined condition; and replacing an old primary component carrier with a new primary component carrier in the event that the status information meets the predetermined condition.
[0018] According to another aspect of the present application, a base station is provided in a carrier aggregation communication network, the base station including: a state acquisition unit for acquiring state information from a terminal, a base station and/or a primary component carrier; a state determining unit for determining whether the state information meets a predetermined condition; and a primary component carrier update unit for replacing an old primary component carrier with a new primary component carrier in the event that the status information meets the predetermined condition.
[0019] In accordance with yet another aspect of the present application, there is provided a terminal adapted for a carrier aggregation communication network, the terminal including: a reconfiguration information receiving unit for receiving reconfiguration information from "control resource control". radio” from a base station; a radio resource configuration unit for configuring a new primary component carrier in accordance with radio resource configuration information contained in the "radio resource control" reconfiguration information; and a deactivation unit for deactivating an old primary component carrier in accordance with a prefix or in accordance with a deactivation command sent by a base station.
[0020] In accordance with yet another aspect of the present application, a communication system is further provided including the aforementioned base station and terminal.
[0021] A further objective of the present application is to provide a method and a device for updating a secondary component carrier, and a corresponding base station, terminal and communication system.
[0022] Therefore, in accordance with an aspect of the present application, a method is provided for updating a secondary component carrier in a carrier aggregation communication network, the method including: acquiring status information from a terminal, a base station and/or a secondary component carrier; determining whether the state information meets a predetermined condition; and adding a new secondary component carrier or replacing an old secondary component carrier with a new secondary component carrier in the event that the status information meets the predetermined condition.
[0023] According to another aspect of the present application, a base station is provided in a carrier aggregation communication network, the base station including: a status acquisition unit for acquiring status information from a terminal, a base station and/or a secondary component carrier; a state determining unit for determining whether the state information meets a predetermined condition; and a secondary component carrier update unit for adding a new secondary component carrier or replacing an old secondary component carrier with a new secondary component carrier in the event that the status information meets the predetermined condition.
[0024] In accordance with yet another aspect of the present application, there is provided a terminal adapted for a carrier aggregation communication network, the terminal including: a reconfiguration information receiving unit for receiving reconfiguration information from "control resource control". radio” from a base station; and a radio resource configuration unit for configuring a new secondary component carrier in accordance with radio resource configuration information contained in the "radio resource control" reconfiguration information.
[0025] In accordance with yet another aspect of the present application, a communication system is further provided including the aforementioned base station and terminal.
[0026] According to the various previous embodiments, it is possible to efficiently update the component carrier to be used. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The foregoing and other objects, features and advantages of the present invention will be more readily understood with reference to the following description of embodiments of the present invention taken in conjunction with the accompanying drawings. In the drawings, the same technical characteristics or corresponding components will be denoted by the same or corresponding reference numerals. The drawings together with the following detailed description are contained in the present specification and form a part of the present specification, and are adopted to further illustrate preferred embodiments of the present invention and explain the principle and advantages of the present invention. In the drawings: Figure 1 is a flowchart of a method for selecting a component carrier according to a first embodiment of the present application; Figure 2 is a schematic diagram of a first scene to which the method according to the first embodiment of the present application is applied; Figure 3 is a schematic diagram of a second scene to which the method according to the first embodiment of the application is applied. present application is applied; Figure 4 is a schematic diagram of a third scene to which the method according to the first embodiment of the present application is applied; Figures 5 to 7 are schematic diagrams of three situations of a position and state of motion of a terminal in the third scene shown in Figure 4; Figure 8 is a flowchart of a method for selecting a component carrier according to another embodiment of the present application; Figure 9 is a schematic diagram of the structure of a terminal adapted for selecting a terminal component carrier according to an embodiment of the present application; Figure 10 is a schematic diagram of the structure of a terminal adapted to select a component carrier. Figure 11 is a schematic diagram of the structure of a terminal adapted to select a component carrier in accordance with yet another embodiment of the present application; Figure 12 is a schematic diagram of the structure of a base station adapted to select a component carrier in accordance with one embodiment of the present application; Figure 13 is a schematic diagram of the structure of a base station adapted to select a component carrier in accordance with another embodiment of the present application; Figure 14 is a schematic diagram of the structure of a base station adapted to select a component carrier in accordance with yet another embodiment of the present application; Figure 15 is a flowchart of a method for updating a primary component carrier in accordance with an embodiment of the application present; Figure 16 is a schematic diagram of a pass-through transfer flow in the method for updating a primary component carrier; Figure 17 is a flowchart of a method for updating a primary component carrier in accordance with another embodiment of the present application; Figure 18 is a schematic diagram of a reconfiguration flow in the method for updating a primary component carrier; Figure 19 is a schematic diagram of a variation of the reconfiguration flow; Figures 20, 21 and 22 are schematic diagrams of a variation of the flow shown in Figures 16, 18 and 19, respectively; Figures 23 , 24 and 25 are schematic diagrams of another variation of the flow shown in Figures 16, 18 and 19, respectively; Figure 26 is a flowchart of a method for updating a secondary component carrier in accordance with an embodiment of the present application; Figure 27 is a schematic diagram of a reconfiguration flow in the method for updating a secondary component carrier; Figure 28 is a schematic diagram of a variation of the reconfiguration flow; Figure 29 is a schematic diagram of the structure of a base station adapted to update a primary component carrier in accordance with an embodiment of the present application; Figure 30 is a schematic diagram of the structure of a base station and a terminal corresponding adapted to update a primary component carrier in accordance with another embodiment of the present application; Figure 31 is a schematic diagram of the structure of a base station and a corresponding terminal adapted to update a primary component carrier in accordance with yet another embodiment of the present application; Figure 32 is a schematic diagram of the structure of a base station adapted to update a secondary component carrier in accordance with an embodiment of the present application; and Figure 33 is a schematic diagram of the structure of a base station and a corresponding terminal adapted to update a secondary component carrier in accordance with another embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION
[0028] Hereinafter, exemplary embodiments of the present invention will be described together with the accompanying drawings. For clarity and brevity, not all features of practical embodiments are described in the specification. However, it is to be understood that many specific implementation decisions need to be made during the development of any such practical embodiments, so as to achieve the developer's specific objective, for example, in accordance with those limiting conditions relating to the system or service, and those conditions constraints may vary with different embodiments. Furthermore, it is also to be understood that development work can be very complicated and time consuming work, but such development work is only a routine task for those skilled in the art who benefit from the present exposure.
[0029] Furthermore, it is to be noted that only apparatus configurations and/or processing steps closely related to the solution at least based on the present invention are shown in the drawings, and other details less related to the present invention are omitted as well. to avoid obscuring the present invention due to unnecessary details.
[0030] Particularly, when connection relationships and information flows are referred to, the representations in the drawings and descriptions in the specification only involve the part closely related to the present invention, but do not empty the representations or list all connections and flows. of information. Selection of a component carrier First embodiment
[0031] In the present application, a carrier that can be used by a terminal and a base station in a carrier aggregation communication network is referred to as an available carrier. A carrier that a terminal has used is referred to as a component carrier, which is also an available carrier. The component carrier of a terminal working in a carrier aggregation mode includes a primary component carrier (PCC), and at least one secondary component carrier (SCC).
[0032] In the carrier aggregation communication network, the base station and the terminal can communicate with each other using carriers located in different frequency bands. For carriers in different frequency bands, the coverage range of a base station antenna varies normally. Because of this, the present application proposes to adopt different component carrier selection strategies for different coverage band distribution modes.
[0033] Therefore, as shown in Figure 1, a method is provided for selecting a component carrier in a carrier aggregation communication network, and the method includes the following steps: determining a coverage range of each available carrier that can be used by a terminal (step 102); determining whether a distribution of the different available carrier coverage bands agrees with a predetermined distribution mode (step 104); and determining a component carrier to be used at least according to a rule that is decided by the mode of distribution, in the case that the distribution of the coverage ranges of different available carriers agrees with the predetermined mode of distribution (step 106).
[0034] The coverage range of each carrier available to a base station is known to the base station. Thus, the coverage range of each available carrier that can be used by a terminal can be obtained based on the position of the terminal. Obviously, a certain available carrier can be used by the terminal means that the terminal is within the coverage range of this available carrier. The position of the terminal can be located together by multiple base stations, and can also be determined by the terminal by means of a satellite positioning system, such as GPS (Global Positioning System), and is provided to the base station.
[0035] As described above, the present application proposes to adjust the component carrier selection strategy according to the distribution mode of the coverage bands. The present order assumes three potential application scenes, which are shown respectively in Figures 2 to 4, and different component carrier selection strategies can be adopted in different scenes. Of course, it is also quite possible to consider just one or two of the application scenes, or to consider more application scenes and provide more selection strategies. For brevity, there are only two carriers available in the examples recited in the present application. However, there may be a plurality of carriers available in practice.
[0036] The first application scene, that is, the first mode of distribution of the coverage bands of the available carriers, is shown in Figure 2. In this distribution mode, each of the base stations 210, 220 and 230 uses two carriers respectively. F1 and F2, and the cell coverage bands corresponding to F1 and F2 are substantially coincident with each other and provide substantially identical coverage regions. In this case, F1 and F2 can be within the same carrier frequency band, and it is a typical continuous carrier aggregation type.
[0037] In this application scene, terminal 250 is within both the coverage ranges of the two carriers F1 and F2, as long as the terminal 250 is within the cell coverage range. So, in this case, if no other conditions are considered, the two carriers F1 and F2 have identical priority, and any of the carriers F1 and F2 can be randomly selected as a new component carrier; alternatively, a carrier is selected from the two carriers F1 and F2 with other conditions taken into account.
[0038] For example, signal quality, interference magnitude, load conditions, and amount of uplink physical resource and downlink physical resource amount (such as PDCCH (downlink physical control channel)) of each carrier can be used as the basis for selecting the component carrier. Specifically, for a terminal, if it has higher signal quality on a certain carrier, the signal is subject to less interference on that carrier, this carrier has relatively low load and more uplink and downlink physical resource, the probability that this carrier be selected as the component carrier is relatively higher.
[0039] Various factors taken into account above may have different priority levels or different weights.
[0040] In case a priority level is fixed for each factor, the decision is made based on the factor with a higher priority level. For example, priority levels of any order can be set for signal quality, amount of physical resource for uplink and amount of physical resource for downlink, magnitude of interference, and load conditions. That is, based on the placement of the priority levels, the candidate component carrier can be determined based on any of the above factors. Alternatively, different priority level groups can be set for the above factors. For example, the priority level of signal quality and amount of physical resource for uplink and amount of physical resource for downlink is higher than that of interference magnitude and load conditions; alternatively, an opposite order of priority levels is fixed, or different priority level groups containing different factors or different number of factors are fixed. That is, based on the placement of the priority-level groups and the priority-level order of the priority-level groups, the candidate component carrier can be determined solely based on any one group of factors.
[0041] A weight (which may be the same or different depending on the situation) can be fixed for each factor, within each of the previous priority level groups, for example in the group consisting of signal quality and amount of signal. physical resource for uplink and amount of physical resource for downlink.
[0042] In the case that different weights are fixed for different factors, the influence of each factor on the component carrier selection is synthetically taken into account. Depending on the requirement in practice, any weight distribution can be fixed. Generally, the weight of signal quality and amount of physical resource for uplink and amount of physical resource for downlink can be set higher than that of interference magnitude and load conditions.
[0043] In the second application scene, that is, the second way of distributing the coverage bands of the available carriers, as shown in Figure 3, each of the base stations 310, 320 and 330 uses two carriers F3 and F4 respectively, and the coverage range of F4 is larger and substantially contains the coverage range of F3. The cell corresponding to F4 mainly ensures coverage, and the cell corresponding to F3 is mainly used to improve processing. In this case, F3 and F4 may be within different carrier frequency bands, and it is a non-continuous carrier aggregation.
[0044] In this application scene, when the terminal 250 is only within the coverage range of F4, but not within the coverage range of F3, there is no carrier selection problem, since there is only one carrier available, this ie F4. When terminal 250 is within the coverage ranges of F3 and F4 at the same time, there is a carrier selection problem. According to an embodiment proposed by the present application, in this case, if no other conditions are considered, the carrier with the largest coverage range, that is, F4, can be selected as the new component carrier. If there are multiple carriers with greater coverage range and the coverage ranges are substantially the same, then the component carrier is further selected according to the selection strategy in the first scene, which will be described in more detail below.
[0045] Of course, similar to the first scene, a carrier can be selected with other conditions taken into account.
[0046] For example, equally, the signal quality, the interference magnitude, the load conditions, and the amount of physical resource for uplink and amount of physical resource for downlink (such as PDCCH, etc.) of each carrier can also be used as the basis for selecting the component carrier. Specifically, for a terminal, if it has higher signal quality on a certain carrier, the signal is subject to less interference on that carrier, this carrier has relatively low load and more uplink and downlink physical resource, the probability that this carrier be selected as the component carrier is relatively higher.
[0047] Various factors taken into account above, including the coverage range of each available carrier, may have different priority levels or different weights.
[0048] In case a priority level is fixed for each factor, the decision is made based on the factor with a higher priority level. For example, priority levels of any order can be set for the available carrier coverage range, the signal quality, the amount of physical resource for uplink and amount of physical resource for downlink, the magnitude of interference and the conditions load. That is, based on the placement of the priority levels, the candidate component carrier can be determined based on any of the above factors. Alternatively, different priority level groups can be set for the above factors. For example, the coverage band priority level is higher than that of the signal quality and the amount of physical resource for uplink and amount of physical resource for downlink, the priority level of signal quality and the amount of physical resource for uplink and amount of physical resource for downlink is higher than that of interference magnitude and load conditions; alternatively, an opposite order of priority levels is fixed, or different priority level groups containing different factors or a different number of factors are fixed. That is, based on the placement of the priority-level groups and the priority-level order of the priority-level groups, the candidate component carrier can be determined solely based on any one group of factors.
[0049] A weight (which may be the same or different depending on the situation) can be fixed for each factor, within each of the previous priority level groups, for example in the group consisting of signal quality and amount of signal. physical resource for uplink and amount of physical resource for downlink.
[0050] In the case that different weights are fixed for different factors, the influence of each factor on the component carrier selection is synthetically taken into account. Depending on the requirement in practice, any weight distribution can be fixed. Generally, coverage band weight can be set higher than that of signal quality and amount of physical resource for uplink and amount of physical resource for downlink, and weight of signal quality and amount of physical resource for uplink and amount of physical resource for downlink can be set higher than that of interference magnitude and load conditions.
[0051] In the third application scene, that is, the third way of distributing the coverage bands of the available carriers, as shown in Figure 4, each of the base stations 410, 420 and 430 uses two carriers F5 and F6 respectively, and the coverage bands of the two available carriers are substantially neither coincident with each other nor contained within each other, but overlap with each other. The cell corresponding to F5 mainly ensures coverage, and the cell corresponding to F6 is mainly used to improve processing (or vice versa). This application scene is characterized by the fact that the cell antenna corresponding to F6 is directed to the edge region in the cell corresponding to F5, which will greatly improve the processing of the edge region in the cell corresponding to F5. In this situation, F5 and F6 may be within different carrier frequency bands, and it is a non-continuous carrier aggregation.
[0052] In this application scene, when the terminal 250 is only within the coverage range of F5 or only within the coverage range of F6, there is no carrier selection problem, since there is only one carrier available, i.e. , F5 or F6. When terminal 250 is within the coverage ranges of F5 and F6 at the same time, that is, in the region where the coverage ranges of the two available carriers overlap, the carrier selection problem occurs.
[0053] According to an embodiment provided by the present application, in this situation, if no other condition is considered, the candidate component carrier can be determined at least according to the position where the terminal is located and the movement direction and terminal movement speed.
[0054] In this application, three modes for the position and movement of the terminal are assumed, as shown in Figure 5 to Figure 7. However, it is to be understood that the position and movement of the terminal can be divided in other ways, and the three modes can be varied here, split or combined equally.
[0055] The first mode is shown in Figure 5, and terminal 250 is at the edge of the available carrier F5e is departing away from this available carrier. In this case, if the terminal is departing away from this available carrier quickly, a higher probability of becoming the candidate component carrier will be assigned to the available carrier (F6 here) corresponding to the departing direction. Of course, the carrier corresponding to the starting direction can be selected directly as the candidate component carrier, that is, the probability is 100%. If there are multiple available carriers corresponding to the starting direction (in addition to F6, there are still other carriers available), then the candidate component carrier is selected from the multiple available carriers at least according to the size of the coverage band, that is, similar to the first or second application scene as described above.
[0056] Leaving “quickly” is mentioned above. Here, “quickly” means that according to the speed of the terminal, the terminal is predicted to be just outside the carrier coverage range within which the terminal is currently located, but not only moves in a small range. For example, if the terminal user just walks around a small lane, but may not intend to leave this carrier coverage lane (eg, go elsewhere), unnecessary operations will be induced if the carrier is updated at this time. In the specific application, how high speed is actually meant by “quickly” can be set particularly according to the practical application.
[0057] Figure 6 illustrates another mode for terminal position and movement, that is, terminal 250 is at the edge of a certain available carrier F5 and is moving on this available carrier F5. In this situation, the carrier of candidate component can be determined at least according to the size of the coverage bands of the available carriers F5 and F6, that is, similar to the second application scene. If the coverage ranges are exactly the same, the selection strategy in the first scene will be applied.
[0058] Figure 7 illustrates another mode for terminal position and movement, that is, terminal 250 is one position in the overlap region of the available carriers F5 and F6, but far from the edge of the overlap region, i.e., within the overlap region. In this situation, the carrier of candidate component can be determined also at least according to the size of the coverage bands of the available carriers F5 and F6, that is, similar to the second application scene. If the coverage ranges are exactly the same, the selection strategy in the first scene will be applied.
[0059] Of course, similar to the first and second application scenes, a carrier can be selected with other conditions taken into account.
[0060] For example, equally, signal quality, interference magnitude, load conditions, and amount of uplink physical resource and amount of downlink physical resource (such as PDCCH) of each carrier can also be used as the basis for selecting the component carrier. These factors, including the position where the terminal is located and the direction of movement and speed of movement of the terminal, and the coverage range of each available carrier, may have different priority levels or different weights.
[0061] In case a priority level is fixed for each factor, the decision is made based on the factor with a higher priority level. For example, priority levels of any order can be fixed for terminal position, terminal movement direction, terminal movement speed, available carrier coverage range, signal quality, amount of physical resource. for uplink and amount of physical resource for downlink, the magnitude of interference and load conditions. That is, based on the placement of the priority levels, the candidate component carrier can be determined based on any of the above factors. Alternatively, different priority level groups can be set for the above factors. For example, the priority level of terminal position, terminal movement direction, terminal movement speed, and available carrier coverage range is higher than that of signal quality and amount of physical resource to link. uplink and downlink physical resource quantity, and the signal quality priority levels and the uplink physical resource quantity and downlink physical resource quantity is higher than that of the interference magnitude and load conditions ; alternatively, an opposite order of priority levels is fixed, or different priority level groups containing different factors or different number of factors are fixed. That is, based on the placement of the priority level groups and the priority level order of the priority level groups, the component carrier can be selected based only on any one group of factors.
[0062] A weight (which may be the same or different depending on the situation) can be fixed for each factor, within each of the previous priority level groups, for example in the group consisting of signal quality and amount of signal. physical resource for uplink and amount of physical resource for downlink.
[0063] In the case that different weights are fixed for different factors, the influence of each factor on the component carrier selection is synthetically taken into account. Depending on the requirement in practice, any weight distribution can be fixed. Generally, the weight of terminal position, terminal movement direction, terminal movement speed and available carrier coverage range can be set higher than that of signal quality and amount of physical resource for uplink. and amount of physical resource for downlink, and the weight of signal quality and amount of physical resource for uplink and amount of physical resource for downlink can be set higher than that of interference magnitude and load conditions. second realization
[0064] In the first embodiment, the component carrier selection was described with respect to different application scenes. In practical application, several application scenes can be mixed, as described in the previous one. For example, the coverage bands of each available carrier may be completely coincident with each other (the first application scene), and may be inclusive (the second application scene) or partially overlapping with each other (the third application scene). .
[0065] Therefore, as shown in Figure 8, according to an embodiment proposed by the present application, the candidate component carrier is selected using successively selection strategies adapted for different application scenes, thus to reduce the extent of component carriers of candidate, until the component carrier to be used is derived. That is, on the basis of the first embodiment, when the distribution of coverage bands of different available carriers includes at least two predetermined modes, the candidate component carriers are first determined according to the rule corresponding to one of the modes, and then the carriers of Secondary candidate component carriers are selected from candidate component carriers as per the rule corresponding to another mode, until a single candidate component carrier is derived.
[0066] Specifically, as shown in Figure 8, the coverage range of each available carrier that can be used by the terminal is first determined (step 102). It is then determined whether the distribution of the different available carrier coverage bands agrees with the predetermined distribution mode (step 104). The two steps were described in detail in the first embodiment, which will not be repeated here.
[0067] In the case that the coverage band is determined to have multiple distribution modes, such as the first mode 806 and the second mode 810, the candidate component carriers can be determined first according to the first rule corresponding to the first mode ( step 808). For example, if the first mode is the third application scene described previously, then the selection strategy for the component carrier in the third application scene is adopted to select the candidate component carriers. The determined candidate component carrier may be unique, with which the stream is terminated, and the determined candidate component carrier is used. Determined candidate component carriers may also not be unique. For example, in the third application scene, if there are multiple carriers available in the terminal's movement direction, and the factors in other aspects of each available carrier or factors taken into account as the selection strategy are substantially the same, there may be multiple available carriers that can be used as the candidate component carriers. At this point, it is necessary to continue selecting among the multiple candidate component carriers using the second rule corresponding to the second mode (for example, the selection strategy corresponding to the first or second application scene) (step 812), thus to derive the carrier component to be used.
[0068] Figure 8 illustrates the situation with only two distribution modes. Obviously, there can be multiple distribution modes, and the order of application of selection strategies for the various distribution modes can be optional. Third embodiment
[0069] Furthermore, when the terminal operates in carrier aggregation mode, in addition to a primary component carrier, there are still one or more secondary component carriers (SCC) operating at the same time, which are all in the activated state. Meanwhile, it is also possible that there are one or more carriers in a configured but not activated state, and it is also possible that there are one or more carriers in an unconfigured state.
[0070] When it is necessary to change the primary component carrier, a new primary component carrier can be selected from the secondary component carriers already in use, and it can also be selected from the available carriers that have not yet been configured or that have been configured but not yet activated. When it is necessary to add a secondary component carrier, a new secondary component carrier can be selected from available carriers that have not been configured, and can also be selected from available carriers that have been configured but not yet activated.
[0071] Obviously, carriers in different state have different operation complexities when added. Therefore, on the basis of the first embodiment and the second embodiment, the activation and configuration state of each available carrier can be obtained first when the component carrier is selected, thus further taking into account the activation and configuration state of each available carrier. when the candidate component carrier is determined. Where, the priority level of the available carrier in the on state is higher than that of the available carrier that has been configured but not activated, and the priority level of the available carrier that has been configured but not activated is higher than that of the available carrier that has not been configured.
[0072] Here, “higher priority level” means higher weight, or in some situations, for example, in case other conditions are the same or similar, it means playing a decisive role. Fourth embodiment
[0073] The method for selecting the component carrier described in the first to third embodiments can be used to select the primary component carrier.
[0074] The carrier corresponding to the cell for initial terminal access, or the carrier used during reconnection by the terminal, is naturally prefixed as the primary component carrier. However, with variations in terminal, base station state and network conditions, it may be necessary to update the primary component carrier. At this time, a new primary component carrier can be determined using the method for selecting the component carrier described in the first to third embodiments, and then the old primary component carrier is switched to the new primary component carrier.
[0075] The pass-through transfer from the old primary component carrier to the new primary component carrier can be performed in several ways, and there are already several ways in the prior art. In the present application, the candidate proposes a new flow to update the primary component carrier, which will be described in detail in the following embodiments.
[0076] Primary component carrier update can be performed multiple times. When updating the primary component carrier for the first time when the terminal initially accesses the cell or after the connection is re-established, the old primary component carrier is the initial primary component carrier, that is, the carrier that is used during access terminal initialization or re-establishment of the radio resource connection, which is prefixed as the primary component carrier.
[0077] Carrier aggregation may involve different frequency bands. That is, each carrier that can be used by the terminal can be within the same frequency band, and can be within different frequency bands. Whether the primary component carriers before and after the upgrade are within the same frequency band will affect the overhead required when upgrading the primary component carrier. Therefore, the frequency relationship between available carriers can also be taken into account for the primary component carrier update.
[0078] Specifically, during the primary component carrier update, the frequency spectrum information of each available carrier can be acquired at first, and then the relationship between the frequency of each available carrier and the old primary component carrier is also taken into account to determine the candidate component carrier. Among available carriers with the same power-on state and configuration, available carriers within the same frequency band as the old primary component carrier have higher priority levels. Likewise, “higher priority level” means higher weight, or in some situations, for example, in case other conditions are the same or similar, it means playing a decisive role. fifth achievement
[0079] The method for selecting the component carrier described in the first to third embodiments can be used to select the secondary component carrier.
[0080] The carrier corresponding to the cell for initial terminal access, or the carrier used during reconnection by the terminal, is naturally prefixed as the primary component carrier. However, with the increasing demand on quality of service by the user, it may be necessary to add a new carrier to form the carrier aggregation.
[0081] In this case, in principle, a new secondary component carrier can be determined using the method for selecting the component carrier described in the first to third embodiments, and then the new secondary component carrier is added. The addition of the secondary component carrier can be performed in several ways, and there are already several ways in the prior art. In the present application, the applicant also proposes a new flow to add the secondary component carrier, which will be described in detail in the following embodiments. sixth embodiment
[0082] In the communication system, the method for selecting the component carrier described in the first to fifth embodiments can be performed by the base station with the help of the terminal, and can also be performed by the terminal with the help of the base station.
[0083] Therefore, in this embodiment, a terminal that can implement the various embodiments described above is first proposed.
[0084] In the description of the terminal and base station in this embodiment and the various embodiments that follow, unless necessary, the detailed description of the various embodiments described above will not be repeated further, and reference may be made to the description of the various embodiments described above.
[0085] As shown in Figure 9, a terminal 920 adapted for a carrier aggregation communication network communicates with a base station 960, determines the component carrier with the help of base station 960, and notifies the component carrier to the base station 960. Specifically, terminal 920 includes: a terminal information acquisition unit 902 for acquiring terminal position information and/or carrier distribution information corresponding to terminal position; a carrier distribution mode determining unit 904 for determining whether the distribution of coverage bands of different available carriers corresponding to the terminal position agrees with the predetermined distribution mode; a component carrier determining unit 906 for determining the component carrier to be used at least according to the rule that is decided by the distribution mode in the case that the distribution of coverage bands of different available carriers corresponding to the terminal position agrees with the predetermined delivery mode; and a notification unit 908 for notifying the component carrier determined to be used to the base station (process (4)).
[0086] The purpose of the terminal information acquisition unit 902 is to acquire information about the carrier coverage range that can be used by the terminal, so that the carrier distribution mode determining unit can determine the distribution mode. available carrier coverage ranges. The information about the available carrier coverage range must be determined based on the terminal position and the base station carrier parameter. The position of the terminal may be determined jointly by multiple base stations 960, and may also be determined by the terminal 920 by means of the satellite positioning system 940, such as GPS (Global Positioning System).
[0087] Therefore, in the case of satellite positioning, the terminal information acquisition unit 902 may include a positioning device that is built into the terminal and communicates with the satellite positioning system (process (1)), which positioning device transfers the position of the terminal to the base station 960 (process (2)), and based on the terminal position information, the base station 960 transfers the information about the available carrier coverage band to the information acquisition unit of terminal 902 (process (3)). In a variation of the embodiment, terminal 920 may acquire information about the coverage range of the carrier available without base station 960. For example, terminal 920 may determine whether it is within the coverage range of a certain carrier by detecting the signal strength of each carrier. In this case, as for determining the available carrier coverage range, processes (2) and (3) are not needed.
[0088] Furthermore, in the case of base station positioning, since the terminal position is obtained by the base station, the base station can obtain the information about the available carrier coverage range directly according to this position, so that the terminal information acquisition unit 902 in the terminal can acquire information from base station 960 directly (process (3)).
[0089] If the carrier distribution mode determining unit 904 determines that the predetermined distribution mode is that the coverage ranges of the available carriers are substantially the same, the component carrier determining unit 906 takes all available carriers as the candidate component carriers.
[0090] If the carrier distribution mode determining unit 904 determines that the predetermined distribution mode is that there is at least one available carrier, the coverage range of which is contained substantially within the coverage range of at least one other carrier available, the component carrier determining unit 906 determines the candidate component carrier at least according to the size of the coverage band.
[0091] If the carrier distribution mode determining unit 904 determines that the predetermined distribution mode is that there are two carriers available, the coverage ranges of which are not substantially coincident with each other nor contained within each other, but overlapping with each other , the terminal information acquisition unit 902 acquires information about the terminal's movement direction and speed of movement, and the component carrier determining unit 906 is further configured to determine the candidate component carrier at least in accordance with the terminal position and its movement direction and movement speed.
[0092] The direction of movement and speed of movement of the terminal are determined based on the positions of the terminal at different instants of time. As mentioned above, the terminal's position can be determined by its built-in satellite positioning device, and it can also be determined by the base station 960. In any case, the terminal's movement direction and movement speed can be calculated by the terminal unit. acquiring terminal information based on position information obtained from the satellite positioning device or base station 960. In the case that position information is obtained from base station 960, base station 960 can provide position information from the terminal to the terminal. terminal information acquisition unit through process (3) (which can certainly be another process).
[0093] Furthermore, in the case that the position of the terminal is calculated by the base station 960, the calculation of the movement direction and speed of movement of the terminal can of course also be performed by the base station 960. In this situation, the base station 960 only needs directly providing terminal position information and information about the terminal's movement direction and speed of movement to the terminal information acquisition unit by means of process (3) (which of course can be another process).
[0094] Thus, the component carrier determining unit 906 can be further configured so that if the information obtained by the terminal information acquisition unit 902 indicates that the terminal is on the edge of a certain available carrier and is departing away from it available carrier quickly, then a higher probability of becoming the candidate component carrier is assigned to the available carrier corresponding to the departure direction; and if the information obtained by the terminal information acquisition unit 902 indicates that the terminal is on the edge of a certain available carrier and is moving into this available carrier, or if the terminal is in a position in the overlap region, but too far from the edge of the overlap region, then the candidate component carrier can be determined at least according to the size of the coverage band.
[0095] The component carrier determining unit 906 can further be configured so that if there are multiple available carriers corresponding to the starting direction, then the candidate component carrier can be selected from the multiple available carriers at least according to the size of the coverage range.
[0096] The component carrier determining unit 906 may be further configured to determine at least the candidate component carrier according to at least one of the following factors: the signal quality, the amount of physical resource for the uplink, and the quantity physical resource to downlink, the magnitude of interference, and load conditions.
[0097] Here, the signal quality is the information that can be obtained by the terminal itself according to the conventional techniques, and the interference of other base stations, carriers, terminals or similar in the current terminal is also the information that can be obtained based on the signal quality according to conventional techniques. The amount of physical resource for uplink and amount of physical resource for downlink and the load conditions are the information that can be obtained from the base station based on conventional techniques (see process (5) in Figure 10). If the interference of the current terminal on other terminals is taken into account, it is necessary to acquire the related information from the base station (the base station acquires the report information from other terminals).
[0098] The component carrier determining unit 906 can be further configured so that to determine the candidate component carrier, the importance of the coverage range, the position of the terminal, and the direction of movement and speed of movement of the terminal are higher than that of signal quality and quantity of physical resource for uplink and quantity of physical resource for downlink, and the importance of signal quality and quantity of physical resource for uplink and quantity of physical resource for link downstream is higher than that of the interference magnitude and load conditions; alternatively, the carrier of candidate component can be determined by any one factor or by multiple factors among the coverage range, the position of the terminal and the direction of movement and speed of movement of the terminal, the signal quality, the amount of resource physical to uplink and amount of physical resource to downlink, the magnitude of interference and load conditions.
[0099] The component carrier determining unit 906 can be further configured so that when the distribution of coverage ranges of different available carriers includes at least two predetermined modes, the candidate component carriers are first determined according to the rule corresponding to one of the modes, and then the secondary candidate component carriers are selected from the candidate component carriers according to the rule corresponding to the other mode, until a single candidate component carrier is derived.
[00100] The terminal may further include a carrier state acquisition unit 910 (Figure 11) to acquire the activation and configuration state of each available carrier. The component carrier determining unit 906 can be further configured so that the activation and configuration state of each available carrier is also taken into account to determine the candidate component carrier. The priority level of the available carrier that is in the on state is higher than that of the available carrier that has been configured but not activated, and the priority levels of the available carrier that has been configured but not activated is higher than that of the carrier available that has not been configured.
[00101] It is to be noted that the embodiment shown in Figure 11 does not have the process (5) in Figure 10. However, it can be seen from the previous description that in another variation, there may be the process (5) in Figure 10.
[00102] The component carrier determined by the terminal of this embodiment may be the primary component carrier, and may also be the secondary component carrier.
[00103] When used to determine the primary component carrier, the component carrier determining unit 906 can be further configured so that the relationship between the frequency of each available carrier and the old primary component carrier is also taken into account to determine the candidate component carrier. Among available carriers with the same power-on state and configuration, available carriers within the same frequency band as the old primary component carrier have a higher priority level.
[00104] The previous description of the present embodiment exposes a terminal that interacts with the base station. Of course, it also exposes a communication system consisting of the upstream terminal and the base station that communicates with the terminal. Seventh embodiment
[00105] The sixth embodiment described the terminal for implementing the method for selecting the component carrier described in the first to fifth embodiments. The seventh embodiment will describe the base station for implementing the method for selecting the component carrier described in the first to fifth embodiments.
[00106] In the description of the terminal and base station in this and the following embodiments, unless necessary, the detailed description of the various embodiments described above will not be repeated further, and reference may be made to the description of the various embodiments described above.
[00107] As shown in Figure 12, a base station 1220 in a carrier aggregation communication network communicates with a terminal 1260, determines the component carrier with the help of the terminal 1260, and notifies the component carrier to the terminal 1260. Specifically, base station 1220 includes: a terminal information acquisition unit 1202 for acquiring terminal position information and/or carrier distribution information corresponding to the terminal position; a carrier distribution mode determining unit 1204 for determining whether the distribution of the coverage bands of different available carriers corresponding to the position of the terminal agrees with the predetermined distribution mode; a component carrier determining unit 1206 to determine the component carrier to be used at least according to the rule that is decided by the distribution mode, in the case that the distribution of coverage bands of different available carriers corresponding to the position of the terminal agree to the default distribution mode; and a notification unit 1208 for notifying the component carrier determined to be used at the terminal (process (4)).
[00108] The purpose of the terminal information acquisition unit 1202 is to acquire information about the carrier coverage range that can be used by the terminal, so that the carrier distribution mode determining unit can determine the distribution mode available carrier coverage ranges. The information about the available carrier coverage range must be determined based on the terminal position and the base station carrier parameter. The position of the terminal may be measured by the base station 1220 itself, and may also be determined by the terminal 1260 by means of the satellite positioning system 940, such as GPS (Global Positioning System) (process 1).
[00109] Therefore, in the case of satellite positioning, the terminal information acquisition unit 1202 can obtain from the terminal 1260 the positioning information of the built-in positioning device (process (2)), thus further obtaining the information about the carrier coverage range that can be used by the terminal based on information about the available carrier from the base station.
[00110] Furthermore, in the case of base station positioning, since the terminal position is obtained by the base station, the base station can obtain the information about the available carrier coverage range directly according to this position.
[00111] If the carrier distribution mode determining unit 1204 determines that the predetermined distribution mode is that the coverage ranges of the available carriers are substantially the same, the component carrier determining unit 1206 takes all available carriers as the candidate component carriers.
[00112] If the carrier distribution mode determining unit 1204 determines that the predetermined distribution mode is that there is at least one available carrier, the coverage range of which is contained substantially within the coverage range of at least one other carrier available, the component carrier determining unit 1206 determines the candidate component carrier at least according to the size of the coverage band.
[00113] If the carrier distribution mode determining unit 1204 determines that the predetermined distribution mode is that there are at least two carriers available, the coverage ranges of which are not substantially coincident with each other nor contained within each other, but overlap from each other, the terminal information acquisition unit 1202 acquires information about the movement direction and movement speed of the terminal, and the component carrier determining unit 1206 is further configured to determine the candidate component carrier of at least according to the terminal's position and its movement direction and movement speed.
[00114] The direction of movement and speed of movement of the terminal are determined based on the terminal positions at different instants of time. As mentioned above, the terminal positions can be determined by its built-in satellite positioning device, and can also be determined by the base station 1220. In any case, the terminal's movement direction and movement speed can be calculated by the terminal unit. acquiring terminal information based on position information obtained from terminal 1260 or the terminal position calculated by the base station.
[00115] Furthermore, in the case that the position of the terminal is obtained by the terminal 1260 by means of the satellite positioning device, the calculation of the movement direction and movement speed of the terminal can of course also be performed by the terminal itself. In this situation, terminal 1260 only needs to directly provide terminal position information and information about terminal movement direction and terminal movement speed to terminal information acquisition unit 1202 via process (2) (which of course may be another process).
[00116] Thus, the component carrier determining unit 1206 can be further configured so that if the information obtained by the terminal information acquisition unit 1202 indicates that the terminal is on the edge of a certain available carrier and is departing away from it available carrier quickly, then a higher probability of becoming the candidate component carrier is assigned to the available carrier corresponding to the departure direction; and if the information obtained by the terminal information acquisition unit 1202 indicates that the terminal is on the edge of a certain available carrier and is moving into this available carrier, or if the terminal is in a position in the overlap region, but too far from the edge of the overlap region, then the candidate component carrier can be determined at least according to the size of the coverage band.
[00117] The component carrier determining unit 1206 can be further configured so that if there are multiple available carriers corresponding to the starting direction, then the candidate component carrier can be selected from the multiple available carriers at least according to the size of the coverage range.
[00118] The component carrier determining unit 1206 may be further configured to determine the candidate component carrier at least in accordance with at least one of the following factors: the signal quality, the amount of physical resource for the uplink and quantity physical resource to downlink, the magnitude of interference, and load conditions.
[00119] Here, the signal quality is the information that can be obtained by the terminal itself according to conventional techniques, and the interference of other base stations, carriers, terminals or similar in the current terminal is also the information that can be obtained by the terminal based on signal quality according to conventional techniques. The amount of physical resource for uplink and amount of physical resource for downlink and load conditions are the information that can be contained by the base station itself based on conventional techniques. If interference from the current terminal on other terminals is taken into account, related information is obtained by the base station based on information reported by other terminals. Therefore, component carrier determining unit 1206 obtains related information from terminal 1260 as required (see process (5) in Figure 13).
[00120] The component carrier determining unit 1206 can further be configured so that to determine the candidate component carrier, the importance of the coverage range, the position of the terminal, and the direction of movement and speed of movement of the terminal is higher than that of signal quality and quantity of physical resource for uplink and quantity of physical resource for downlink, and the importance of signal quality and quantity of physical resource for uplink and quantity of physical resource for link downstream is higher than that of the interference magnitude and load conditions; alternatively, the carrier of candidate component can be determined by any one factor or by multiple factors between coverage range, terminal position and the direction of movement and speed of movement of the terminal, the signal quality, the amount of resource physical to uplink and amount of physical resource to downlink, the magnitude of interference and load conditions.
[00121] The component carrier determining unit 1206 can be further configured so that when the distribution of coverage ranges of different available carriers includes at least two predetermined modes, the candidate component carriers are first determined as per the rule corresponding to one of the modes, and then the secondary candidate component carriers are selected from the candidate component carriers according to the rule corresponding to the other mode, until a single candidate component carrier is derived.
[00122] The base station may further include a carrier state acquisition unit 1210 to acquire the activation and configuration state of each available carrier. The component carrier determining unit 1206 can be further configured so that the activation and configuration state of each available carrier is also taken into account to determine the candidate component carrier. The priority level of available carriers in the enabled state is higher than that of the available configured but not enabled carriers, and the priority level of the available configured but not enabled carrier is higher than that of the available carrier that has not been configured. Here, the activation and configuration status of the available carrier is the state of the terminal itself, so the base station of this embodiment needs to obtain from the terminal 1260 the activation and configuration status information of the available carrier from this terminal by the process (6) (Figure 14). ).
[00123] It is to be noted that the embodiment shown in Figure 14 does not have the process (5) in Figure 13. However, it can be seen from the previous description that in another variation, there may be the process (5) in Figure 13.
[00124] The component carrier determined by the base station of this embodiment can be the primary component carrier, and it can also be the secondary component carrier.
[00125] When used to determine the primary component carrier, the component carrier determining unit 1206 can be further configured so that the relationship between the frequency of each available carrier and the old primary component carrier is also taken into account to determine the candidate component carrier. Among available carriers with the same power-on state and configuration, available carriers within the same frequency band as the old primary component carrier have a higher priority level.
[00126] The previous description of the present embodiment exposes a base station that interacts with the terminal. Of course, it also exposes a communication system consisting of the upstream base station and the terminal that communicates with the base station. Upgrading a Component Carrier Eighth Embodiment
[00127] Previous embodiments have described how to select a component carrier, including the primary component carrier and the secondary component carrier.
[00128] After the component carrier is selected, it is necessary to switch from the old primary component carrier to the selected new primary component carrier using a satisfactory flow, or add the selected new secondary component carrier, or replace a certain component carrier old secondary with the new secondary component carrier selected (actually the combination of an add action and a delete action). Furthermore, it is also necessary to properly determine the opportunity to update or add the component carrier.
[00129] Therefore, as shown in Figure 15, in this embodiment, a method is proposed for updating the primary component carrier in the carrier aggregation communication network, and the method includes the following steps: acquiring the status information of the terminal, from the base station and/or the primary component carrier (step 1502); determining whether the status information meets the predetermined condition (step 1504); and replacing the old primary component carrier with the new primary component carrier in the event that the status information meets the predetermined condition (step 1506).
[00130] In the prior art, there may be various parameters to represent the terminal, the base station, the performance and state of the component carrier in use and the carrier that can be used by the base station, and the like. Related information can be obtained by various means of measurement or communication. For such information, various predetermined conditions can be set as per the requirement in practical application, and the primary component carrier will be updated when the predetermined condition is satisfied.
[00131] As an illustrative example, but not the restrictive enumeration, the conditions taken into account to update the primary component carrier may include at least one of the following:1. The terminal moves outside the coverage range of the old primary component carrier;2. The signal quality of the old primary component carrier is degraded;3. The amount of physical resource for uplink and amount of physical resource for downlink of the old primary component carrier is not enough;4. The original base station requires updating the primary component carrier considering issues such as global network load balancing and interference between users; e5. The terminal moves within the coverage range of the new base station.
[00132] Primary component carrier update can be implemented using pass-through transfer flow, and can also be implemented using reconfiguration flow. As shown in Figure 16, in the pass-through flow, the base station to which the old primary component carrier belongs transmits “radio resource control (RRC)” reconfiguration information to the terminal. The "radio resource control" reconfiguration information includes mobility control information that includes radio resource configuration information from the new primary component carrier. Then, the terminal reconfigures MAC (Means of Access Control), PDCP (Packet Data Convergence Protocol) and RLC (Radio Link Control) layers and updates the security key using the mobility control information in the information. “radio resource control” reconfiguration, and configures the new primary component carrier using the radio resource configuration information from the new primary component carrier.
[00133] Then a random access process is started, to access the new primary component carrier. The random access process can be initiated by the terminal, or initiated by the base station. If the random access process is initiated by the terminal, the random access process is a competitive process in which the access request is made by the terminal and the base station to which the new primary component bearer belongs executes the naming according to the resource and access requests from other terminals, that is, random access is a process during which terminals acquire the resource. If the random access is unsuccessful, it can be retried as required, or the radio resource configuration information needs to be reconfigured, or it needs to be changed again. If the random access process is initiated by the base station to which the new primary component bearer belongs, then the base station has already reserved corresponding resource for the terminal in advance. Therefore, the terminal only needs to respond to this unless the situation on the terminal side changes. Such random access is referred to as non-competitive random access.
[00134] After the new primary component carrier is accessed, the old primary component carrier can be disabled. Deactivation can be performed in two ways. One way is for the base station to which the new primary component carrier belongs to directly transmit a deactivation command to the terminal (as shown in Figure 16), and the terminal deactivates the old primary component carrier after receiving the deactivation command. The other way is to deactivate the old primary component carrier in an implicit deactivation way (not shown in Figure 16), that is, the terminal does not need to receive the deactivation command from the base station, but it auto deactivates the old primary component carrier. Such automatic action can, for example, be performed based on a timer, that is, the system sets in advance the time to disable the old primary component carrier, or sets in advance the trigger condition for the disable timer.
[00135] It is to be noted that "the base station to which the new primary component carrier belongs" and "the base station to which the old primary component carrier belongs" are mentioned here. When the new and old primary component carriers belong to the same base station, the two preceding terms refer to the same base station.
[00136] As described above, the primary decomponent carrier update can also be performed using the reconfiguration flow. As shown in Figure 18, when compared with pass-through transfer flow, reconfiguration flow can be free from random access process and key update process. Furthermore, the content of the RRC reconfiguration information is simplified, not including the mobility control information, but only including the radio resource configuration information of the new primary component carrier. Therefore, after receiving the RRC reconfiguration information, the terminal only needs to configure the new primary component bearer, but it does not need to reconfigure the MAC, PDCP, RLC layers and update the security key. Therefore, the overhead of additional system caused by upgrading the primary component carrier can be reduced, and the lower quality of service problem for the user due to upgrading the primary component carrier can be avoided. In this situation, it is unnecessary to include all new primary component carrier related configuration information in the RRC information body (e.g. not including mobility control information), and it is necessary to include only configuration information that is updated. compared to the old primary component carrier, i.e. the radio resource configuration information, which may be referred to as increment signaling. Ninth Embodiment
[00137] Obviously, the update of all primary component carriers can be performed in the pass-through way. However, not every update of the primary component carriers can be performed in the reconfiguration manner. This is because only if the new and old primary component carriers have the same security key and it is unnecessary to reconfigure the MAC, PDCP and RLC layers, is it possible to use the reconfiguration flow.
[00138] Therefore, the present request continues to propose that the flow for update is decided according to the update scene. If the primary component carriers before and after the update belong to the same base station, the primary component carrier is updated using the reconfiguration flow. If the primary component carriers before and after the update belong to different base stations, the primary component carrier is updated using the pass-through transfer flow.
[00139] Specifically, as shown in Figure 17, the flow to update the primary component carrier includes: determining whether the new primary component carrier and the old primary component carrier belong to the same base station (step 1702); replace the old primary component carrier with the new primary component carrier by this base station using the reconfiguration flow, if the new primary component carrier and the old primary component carrier belong to the same base station (step 1704); otherwise, transmit a handover request to the base station to which the new primary component carrier belongs by the base station to which the old primary component carrier belongs, to acquire related information from the base station to which the primary component carrier belongs new belongs (step 1704), and then replace the old primary component carrier with the new primary component carrier using the pass-through transfer flow (step 1706).
[00140] Specifically, in step 1704, the base station to which the old primary component carrier belongs (referred to as the old base station for summary below) transmits the handover request to the base station to which the primary component carrier new belongs (referred to as the new base station for summary below), so that the new base station can prepare the configuration information required for handover from the terminal to the new primary component carrier, and so the old base station can obtain the necessary configuration information from the new base station, so that the old base station can prepare during the pass-through flow the RRC reconfiguration information to be sent to the terminal.
[00141] The reconfiguration flow 1704 and the pass-through transfer flow 1706 in this embodiment are the same as those described along with Figure 16 and Figure 18 above. The slight difference is that since the new and old primary component carriers belong to different base stations, although the RRC reconfiguration information is still sent by the old base station, the random access process after the configuration is completed is the interaction with the new base station (which is described in detail along with Figure 31 below). The reply (or confirmation) message after the terminal completes the configuration is also sent to the new base station directly.
[00142] Comparing the eighth embodiment with the ninth embodiment, it can be seen that because it is necessary to reconfigure the MAC, PDCP and RLC layers and update the security key during the pass-through process, the overhead system cost will be increased and the phenomenon of communication interruption will inevitably occur. If the reconfiguration flow is adopted, the overhead system cost will be reduced significantly, and the time duration of the communication interruption is shortened. Thus, the method proposed by the ninth embodiment, where whether the pass-through transfer flow or the reconfiguration flow is used to update the primary component carrier is determined according to whether the primary component carriers before and after the update belong to the same base station, it can reduce the overhead of additional system due to upgrade of the primary component carrier, and avoid the problems such as degraded quality of service for the user due to the upgrade of the primary component carrier.
[00143] In the previous reconfiguration flow, the new primary component carrier and the old primary component carrier are generally within the same frequency band, have the same time advance, and both remain synchronous with the base station. If these conditions are not satisfied, it is necessary to start random access from the new primary component carrier before the old primary component carrier is deactivated, as shown in Figure 19. tenth realization
[00144] In the eighth and ninth embodiments, the implicit assumption is that the new primary component carrier was initially configured and activated. However, in practice, there is also the scene in which the new primary component carrier was not initially configured, or was initially configured but not activated.
[00145] In this scene, of course, it is necessary to initially configure and activate the carrier to be used as the new primary component carrier that has not been initially configured yet, and to activate the carrier to be used as the new primary component carrier that has been initially configured, but not yet activated. The initial configuration (that is, the addition of this carrier) should be performed at the beginning of the pass-through transfer flow or reconfiguration flow (not shown in the Figures), but the activation process is relatively flexible in terms of time order. As shown in Figures 20 to 22 corresponding to Figures 16, 18 and 19, during the activation process, the activation command can be sent by the base station after the configuration is completed or after the random access process, or before the old primary component carrier is deactivated (as shown in the Figures, the base station transmits the deactivation command, but as described above, the deactivation process can also be the deactivation implied by the terminal itself). Alternatively, as shown in Figures 23 to 25 corresponding to Figures 16, 18 and 19, during the activation process, the activation command can also be sent by the base station before the RRC reconfiguration information is sent.
[00146] Furthermore, the activation command can be combined or sent simultaneously with other commands. For example, if the new primary component carrier is in the state in which it is not initially configured, the initial configuration and activation processes can be combined to be defined as a new “configuration and activation” process to perform configuration and activation simultaneously , that is, the base station transmits a “configuration and activation” command. The terminal performs configuration and activation simultaneously after receiving this command. Furthermore, the activation command can be sent together with the “radio resource control” reconfiguration information.
[00147] In another embodiment, the initial setup flow and the next pass transfer flow or reconfiguration flow may be combined to be contained in one command to be executed, but not separate. That is, the initial configuration command can be combined with the RRC reconfiguration information. Eleventh Achievement
[00148] The secondary component carrier update will be described in the following. As described above, updating the secondary component carrier includes adding the selected new secondary component carrier, or replacing a certain old secondary component carrier with the selected new secondary component carrier. The previous situation is actually the combination of the adding action and the deleting action. Similar to the consideration in the eighth embodiment, this embodiment proposes a method for updating the secondary component carrier, to correctly determine the opportunity to update or add the component carrier.
[00149] As shown in Figure 26, the method of this embodiment includes the following steps: acquiring the status information of the terminal, base station and/or secondary component carrier (step 2202); determining whether the status information meets the predetermined condition (step 2204); and adding the new secondary component carrier or replacing the old secondary component carrier with the new secondary component carrier in the case that the status information meets the predetermined condition (step 2206).
[00150] In the prior art, there are various parameters to represent the terminal, the base station, and the performance and status of the component carrier in use or the carrier that can be used by the base station, and the like, and the related information can be obtained by various means of measurement or communication. For such information, various predetermined conditions can be set depending on the requirement in practical application, and the secondary component carrier will be updated when the predetermined condition is satisfied.
[00151] As an illustrative example, but not the restrictive enumeration, the conditions taken into account to update the secondary component carrier may include at least one of the following:1. More secondary component carriers are needed due to service requirement;2. The terminal moves outside the coverage range of the old secondary component carrier;3. The signal quality of the old secondary component carrier is degraded;4. The amount of physical resource for uplink and amount of physical resource for downlink of the old secondary component carrier is not enough;5. The original base station requires updating the secondary component carrier considering issues such as global network load balancing and interference between users; e6. The terminal moves within the coverage range of the new base station.
[00152] Minor component carrier update can be implemented using reconfiguration flow. This reconfiguration flow is similar to the reconfiguration flow for the primary component carrier described along with Figure 18. The difference is that since the secondary component carrier is not unique, the essence of updating the secondary component carrier is to add the new secondary component carrier as described above, and therefore the reconfiguration flow for updating the secondary component carrier does not need to include the deactivation process.
[00153] Specifically, in the reconfiguration flow, the base station transmits “radio resource control (RRC)” reconfiguration information to the terminal. The “radio resource control” reconfiguration information only includes radio resource configuration information from the new secondary component carrier. Then, the terminal configures the new secondary component carrier using the radio resource configuration information from the new secondary component carrier. Because it is unnecessary to reconfigure the MAC, PDCP and RLC layers or update the security key, the additional system overhead caused by updating the secondary component carrier is reduced, and the problem of degraded quality of service for the user caused by the update. of the secondary component carrier is avoided. In this situation, it is unnecessary to include all new secondary component carrier related configuration information in the RRC information body (e.g., not including mobility control information), and it is necessary to include only the RRC resource configuration information. secondary component carrier radio, which is referred to as increment signaling.
[00154] Also, similar to the tenth embodiment, in practice there is also the scene in which the new secondary component carrier was not initially configured, or was initially configured but not activated.
[00155] In such a scene, it is also necessary to activate the carrier to be used as the new secondary component carrier which has not been initially configured yet, or which has been initially configured but not yet activated (Figure 27 and 28). For the secondary component carrier, when the reconfiguration in the present order is completed, its initial configuration is completed (ie, the addition of this carrier). The activation process is also relatively flexible in terms of timing. As shown in Figure 28, during the activation process, the activation command can be sent by the base station after the configuration based on RRC reconfiguration information is completed. Alternatively, as shown in Figure 27, during the activation process, the activation command can also be sent by the base station before the RRC reconfiguration information is sent.
[00156] Likewise, the activation command can be combined or sent simultaneously with other commands. For example, the activation command can be sent along with the “radio resource control” reset information. twelfth embodiment
[00157] The method for updating the component carrier described in the eighth to tenth embodiments can be performed by the base station and the terminal in cooperation in the communication system.
[00158] Therefore, in this embodiment, a terminal, a base station and a communication system are proposed which can respectively implement the previous embodiments.
[00159] In the description of the terminal, the base station and the communication system in this embodiment and in the following embodiments, unless necessary, the detailed description of the various embodiments that have been described above will not be repeated further, and reference may be made to the description of the various embodiments described above.
[00160] As shown in Figure 29, a base station 2420 communicates with a terminal 2520 in a carrier aggregation communication network, and performs the primary component carrier update. Specifically, the terminal includes: a status acquisition unit 2402 for acquiring status information from the terminal, base station and/or primary component carrier; a status determining unit 2404 for determining whether the status information meets the predetermined condition; and a primary component carrier update unit 2406 for replacing the old primary component carrier with the new primary component carrier in the event that the status information meets the predetermined condition.
[00161] Specifically, state acquisition unit 2402 is used to acquire information based on which state unit 2404 can determine whether the primary component carrier update condition is satisfied. What information is to be obtained is dependent on the update condition, and the update condition in turn can be optionally set according to the specific application.
[00162] For example, the default condition includes at least one of the following:1. The terminal moves outside the coverage range of the old primary component carrier;2. The signal quality of the old primary component carrier is degraded;3. The amount of physical resource for uplink and amount of physical resource for downlink of the old primary component carrier is not enough;4. The original base station requires updating the primary component carrier considering issues such as global network load balancing and interference between users; and 5. The terminal moves within the coverage range of the new base station.
[00163] So, for conditions 1 and 5, the judgment must be made based on the terminal position and the coverage range of the corresponding base station's primary component carrier. For condition 2, it is necessary to acquire the signal quality information from the terminal. For condition 3, it is necessary to acquire the related information from the base station. Condition 4 is completely a base station command.
[00164] Therefore, depending on what the predetermined condition specifically is, state acquisition unit 2402 may only need to acquire related information from the base station itself, but not interact with terminal 2520, and may also need to interact with terminal 2520 to acquire related information. The specific way of acquiring the information has been described in the description given with respect to the component carrier selection, which will not be repeated here.
[00165] The 2406 Primary Component Carrier Update Unit interacts with the 2520 Terminal to perform the Primary Component Carrier Update. As described above, all updating of the primary component carriers can be performed by the pass-through transfer flow. Therefore, in one embodiment, as shown in Figure 30, the primary component carrier update unit 2406 may include: a reconfiguration information transmitting unit 24062 for transmitting "radio resource control" reconfiguration information to the terminal , the “radio resource control” reconfiguration information including the mobility control information including the information used by the terminal to reconfigure the MAC, PDCP and RLC layers and update the security key, and the resource configuration information radio used by the terminal to configure the new primary component carrier; and a random access unit 24064 for initiating non-competitive random access or responding to the random access request of the terminal.
[00166] As described above, the pass-through transfer flow includes deactivating the old primary component carrier. However, the deactivation command can be sent by the base station, or the implicit deactivation can also be performed by the terminal itself. In the above manner, the primary component carrier update unit 2406 may further include a deactivation command transmitter unit 24066, to deactivate the old primary component carrier, as shown in Figure 30. However, in the above manner, the deactivation unit 2406 primary component carrier upgrade may not include 24066 disable command transmitter unit.
[00167] Correspondingly, this embodiment further provides a corresponding terminal 2520 as shown in Figure 30, and the terminal 2520 includes: a reconfiguration information receiving unit 2502 for receiving "radio resource control" reconfiguration information from the base station ; a 2504 mobility control configuration unit to reconfigure the MAC, PDCP and RLC layers and update the security key according to the “radio resource control” reconfiguration information; a radio resource configuration unit 2506 for configuring the new primary component carrier in accordance with the radio resource configuration information contained in the "radio resource control" reconfiguration information; a random access unit 2510 for initiating competitive random access or responding to noncompetitive random access initiated by the base station; and a deactivation unit 2508 for deactivating the old primary component carrier as per the prefix or in accordance with the deactivation command sent by the base station.
[00168] Earlier base station 2420 and terminal 2520 are adapted to perform pass-through transfer flow. Naturally, when the reconfiguration flow described above is completed, the "radio resource control" reconfiguration information that the reconfiguration information transmitting unit 24062 is configured to transmit to the terminal includes only the radio resource configuration information of the new primary component carrier, to configure the new primary component carrier by terminal 2520. Correspondingly, no function of mobility control configuration unit 2504 is needed on terminal 2520.
[00169] As described above, the reconfiguration flow generally does not have any random access processes, and thus the base station 2420 and terminal 2520 earlier adapted to run the reconfiguration flow both cannot have any random access units. However, as described above, base station 2420 and terminal 2520 can also respectively contain the corresponding random access unit, so as to randomly access the new primary component carrier before the old primary component carrier is deactivated in the event that the carriers of new and old primary components do not satisfy the following conditions. Such conditions are that the new and old primary component carriers are within the same frequency band, have the same time advance and both remain synchronous with the base station.
[00170] As described above, for the primary component carrier update, the preferred way is to correctly select either the pass-through transfer flow or the reconfiguration flow depending on the application scene, and so it is better for the base station and the terminal each have the ability to process the pass-through transfer flow and the reconfiguration flow. For terminal 2520, it can be seen from the above description that all illustrated components of terminal 2520 shown in Figure 30 will be used in the pass-through transfer flow, and only part of the components will be used in the reconfiguration flow. Therefore, it is believed that the terminal being able to run the pass-through transfer flow can also run the reconfiguration flow.
[00171] However, the RRC reconfiguration information is transmitted by the base station, so whether to use the pass-through transfer flow or the reconfiguration flow is to be determined by the base station. Therefore, as shown in Figure 31, in the base station 2420 that supports both the pass-through flow and the reconfiguration flow, the state determining unit 2404 can be further configured to judge whether the new and old primary component carriers belong to the same base station based on information obtained by the state acquisition unit 2402. Of course, such a judgment can also be made by any component in the base station 2420, and the result is reported to the primary component carrier update unit 2406. Generally, by For example, the base station itself knows the terminal's current primary component carrier. However, during the primary component carrier selection, the new primary component carrier is determined by the base station, or determined by the terminal and notified to the base station (e.g., transmitting the request to update the primary component carrier to the base station) , and so the base station can judge whether the new and old primary component carriers belong to the same base station based on the above information. Because the terminal must ask the base station to which the terminal currently belongs (that is, the base station to which the old primary component carrier belongs) to update the primary component carrier, the base station's prior judgment is to judge whether the primary component carrier new primary component is a carrier of the base station itself.
[00172] Correspondingly, the reconfiguration information transmitting unit 24062 can be configured to transmit different configuration information in different cases. That is, in the case that the new and old primary component carriers belong to the same base station, the "radio resource control" reconfiguration information transmitted to the terminal includes only the radio resource configuration information of the primary component carrier. new, to configure the new primary component carrier by the terminal; in the case that the new and old primary component carriers belong to different base stations, the “radio resource control” reconfiguration information includes the mobility control information which includes the information to reconfigure the MAC, PDCP and RLC layers and updating the security key by the terminal, and the radio resource configuration information to configure the new primary component carrier by the terminal.
[00173] Furthermore, in the case that the new and old primary component carriers belong to different base stations and the pass-through flow is used as described above, the random access unit 2510 of the terminal 2520 will interact with the access unit random access unit 24064' of the new base station 2420', but will not interact with the random access unit 24064 of the old base station 2420, as shown in Figure 31. In this case, the random access unit 24064' of the new base station 2420' and the random access unit 24064 of the old base station 2420 may be the same component, but belong to different base station entities; but they can also be different components, and even the old base station 2420 is not necessarily the same as the new base station 2420'. However, under ideal conditions, the old base station 2420 and the new base station 2420' should have the same structure, and only part of the components of the new base station 2420' is illustrated in Figure 31 for brevity. The deactivation unit mentioned hereinafter is similar to this.
[00174] If the terminal does not disable the old primary component carrier in the implied manner, then the base station must use the disable command transmitter unit. Similar to the random access unit, in case the new and old primary component carriers belong to different base stations and the pass-through flow is used, the deactivation command should be transmitted by the new base station 2420', that is, the deactivation command transmitter unit 24066' of the new base station 2420' interacts with the deactivation unit 2508 of the terminal 2520, as shown in Figure 31.
[00175] Furthermore, in the case that the new and old primary component carriers belong to different base stations and the pass-through flow is used, since different base stations are involved, and association between different base stations is also involved. Therefore, the base station may further include a switching request unit 3102 for transmitting a handover request to the base station to which the new primary component carrier belongs in the case that the new and old primary component carriers belong to base stations. different ways, to acquire the related information from the base station to which the new primary component carrier belongs, thus to prepare by the reconfiguration information transmitting unit the RRC reconfiguration information to be transmitted to the terminal. Details have been described in the method embodiments, which will not be repeated here.
[00176] Furthermore, the primary component carrier update unit may further include an activation command transmitting unit (not shown in the Figures), for transmitting the activation command before or while the reconfiguration information transmitting unit transmits the information “Radio Resource Control” reconfiguration or after the terminal performs the configuration using the “Radio Resource Control” reconfiguration information, so as to activate the new primary component carrier, in case the primary component carrier nova was not configured or activated initially. Furthermore, the base station can also include an initial configuration unit (not shown in the Figures), to transmit to the terminal a command to initially configure (add) the primary component carrier, in case the new primary component carrier has not been configured. initially.
[00177] Correspondingly, the terminal may further include a primary component carrier activation unit (not shown in the Figures) to receive the activation command transmitted by the base station and activate the new primary component carrier. The terminal may further include an initial setup unit (not shown in the Figures) to add the primary component carrier in response to the base station command.
[00178] Of course, as shown in Figures 29, 30 and 31, the above description further sets out a communication system consisting of the various embodiments of the front terminal and the various embodiments of the front base station. thirteenth embodiment
[00179] The method described in the eleventh embodiment is performed by the base station and the terminal in cooperation in the communication system.
[00180] Therefore, in this embodiment, a terminal, a base station and a communication system are proposed which can respectively implement the previous embodiments.
[00181] In the description of the terminal, the base station and the communication system in this embodiment and in the following embodiments, unless necessary, the detailed description of the various embodiments that have been described above will not be repeated further, and reference may be made to the description of the various embodiments described above.
[00182] As shown in Figure 32, a base station 3000 communicates with a terminal 3020 in a carrier aggregation communication network, and performs secondary component carrier update. Specifically, the terminal includes: a status acquisition unit 3002 for acquiring status information from the terminal, base station and/or secondary component carrier; a status determining unit 3004 for determining whether the status information meets the predetermined condition; and a secondary component carrier update unit 3006 for adding the new secondary component carrier or replacing the old secondary component carrier with the new secondary component carrier in the event that the status information meets the predetermined condition.
[00183] Specifically, state acquisition unit 3002 is used to acquire information based on which state unit 3004 can determine whether the secondary component carrier update condition is satisfied. What information is to be obtained is dependent on the update condition, and the update conditions in turn can optionally be set according to the specific application.
[00184] For example, the default condition includes at least one of the following:1. More secondary component carriers are needed due to service requirement;2. The terminal moves outside the coverage range of the old secondary component carrier;3. The signal quality of the old secondary component carrier is degraded;4. The amount of physical resource for uplink and amount of physical resource for downlink of the old secondary component carrier is not enough; 5. The original base station requires updating the secondary component carrier considering problems such as global network load balancing and interference between users; e6. The terminal moves within the coverage range of the new base station.
[00185] Then, for conditions 2 and 6, the judgment must be made based on the terminal position and the coverage range of the corresponding base station's primary component carrier. For condition 3, it is necessary to acquire the signal quality information from the terminal. For condition 4, it is necessary to acquire the related information from the base station. Conditions 1 and 5 are completely a base station command.
[00186] Therefore, depending on what the predetermined condition specifically is, state acquisition unit 3002 may only need to acquire related information from the base station itself, but not interact with terminal 3020, but may also need to interact with terminal 3020 to acquire related information. The specific way of acquiring the information has been described in the description given with respect to the component carrier selection, which will not be repeated here.
[00187] Secondary component carrier update unit 3006 interacts with terminal 3002 thus to perform secondary component carrier update. In one embodiment, as shown in Figure 33, the secondary component carrier update unit 3006 may include: a reconfiguration information transmitting unit 30062 for transmitting "radio resource control" reconfiguration information to the terminal, the “radio resource control” reconfiguration information including only the radio resource configuration information of the new secondary component carrier, to configure the new secondary component carrier by the terminal.
[00188] Correspondingly, this embodiment further provides a corresponding terminal 3020 as shown in Figure 33, and the terminal 3020 includes: a reconfiguration information receiving unit 3022 for receiving "radio resource control" reconfiguration information from the base station ; and a radio resource configuration unit 3024 for configuring the new secondary component carrier in accordance with the radio resource configuration information contained in the "radio resource control" reconfiguration information.
[00189] Furthermore, the 3006 secondary component carrier update unit may further include a 30066 activation command transmitter unit, to transmit the activation command after the new secondary component carrier is added or the old secondary component carrier is replaced with the new secondary component carrier, thus to activate the new secondary component carrier; alternatively, to transmit the activation command before or while the reconfiguration information transmitting unit transmits the “radio resource control” reconfiguration information, so as to activate the new secondary component carrier, in the event that the secondary component carrier nova was not configured or activated initially.
[00190] Correspondingly, the terminal may further include a secondary component carrier activation unit 3028 to receive the activation command transmitted by the base station and activate the new secondary component carrier.
[00191] Of course, as shown in Figures 32 and 33, the above description further sets out a communication system consisting of the various embodiments of the front terminal and the various embodiments of the front base station.
[00192] Some of the embodiments of the present application have been described in detail in the previous one. As can be understood by those skilled in the art, any or all step or component of the method and apparatus of the present invention may be implemented by hardware, firmware, software or a combination thereof in any computing device (including the communication device) including processor, storage medium or the like or the network (including the communication network) of the computing device, which may be implemented by those skilled in the art using their basic programming skill with knowledge of the contents of the present invention, and so shall not be explained in detail here.
[00193] Furthermore, it is obvious that when possible external operations are involved in the above description, it is evidently necessary to use any display device and any input device connected to any computing device and the corresponding interface and controller program. In short, the related hardware, software on the computer, computer system or computer network and the hardware, firmware, software or combination thereof to implement the prior method of the present invention consist of the device and the component thereof in the present invention.
[00194] Therefore, based on the foregoing understanding, the object of the present invention can be achieved by also executing a program or a group of programs on any information processing device. The information processing device may be the well-known universal device. Thus, the object of the present invention can also be achieved only by providing the program product containing the program code to implement the method or device. That is, such a program product also constitutes the present invention, and the storage medium storing such a program product also constitutes the present invention. Of course, the storage medium can be any type of storage medium that is already known to those skilled in the art or that will be developed in the future, including, but not limited to, floppy disk, optical disk, magneto-optical disk, memory card, memory or similar.
[00195] In the device and method of the present invention, it is obvious that several components or several steps can be divided, combined and/or divided and then recombined. Such division and/or recombination should be considered as the equivalent solution of the present invention.
[00196] It is further to be noted that the steps to perform the previous series of processing can be performed chronologically according to the description sequence, but are unnecessarily performed in series in time order. Some steps can be performed in parallel or individually.
[00197] Furthermore, although the foregoing description is given one embodiment by one embodiment, it is to be understood that the various embodiments are not isolated. Of course, those skilled in the art can understand that the various technical features contained in the various embodiments may optionally be combined between the various embodiments, as long as they do not conflict with each other. Of course, all technical features mentioned in the same embodiment can also be optionally combined, as long as they do not conflict with each other.
[00198] Finally, the terms "include", "comprise", "contain" or any other variation are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or further include inherent elements of such process, method, article or device. Furthermore, in the case of no further limitation, an element defined by the sentence “includes one” does not exclude the presence of other same elements in the process, method, article or device that includes an element.
[00199] While the embodiments and advantages thereof have been described along with the accompanying drawings, it should be understood that the embodiments described above are for the purpose of illustration only, but not to limit the present invention. Various modifications and variations may be made by those skilled in the art without departing from the substance and scope of the present invention. Therefore, the scope of the present invention is only defined by the appended claims and their equivalents, and various variations, substitutions and changes may be made without departing from the spirit and scope of the present invention defined by the appended claims.

权利要求:
Claims (27)
[0001]
1. Base station in a carrier aggregation communication network, comprising: a secondary component carrier updating unit configured to update a secondary component carrier to a terminal, comprising a reconfiguration information transmitting unit configured to transmit to the terminal "Radio Resource Control" reconfiguration information comprising radio resource configuration information of an updated secondary component carrier to configure the updated secondary component carrier, wherein mobility control information is not included in the “Radio Resource Control” reconfiguration information, the updated secondary component carrier being configured without MAC reset or updating security key, the secondary component carrier update unit is additionally configured to update a component carrier secondary component to a terminal by adding a new secondary component carrier or replacing an old secondary component carrier with a new secondary component carrier to the terminal, the component carrier to be used by the terminal is determined at least in accordance with a rule that is decided by a distribution mode in the case where a coverage band distribution of different available carriers corresponding to the terminal position according to the predetermined distribution mode, wherein the predetermined distribution mode and corresponding rule is one of:o predetermined distribution mode is such that the coverage bands of different available carriers are substantially the same, and the rule comprises taking each available carrier as a candidate component carrier; the predetermined distribution mode is such that there is at least one available carrier, of which the range of coverage is substantially congruent taken within the coverage band of at least one other available carrier, and the rule comprises determining a candidate component carrier at least in accordance with the size of the coverage band of each available carrier; and, the predetermined mode of distribution is such that there are at least two carriers available, of which the coverage bands are substantially non-coincident with each other and not contained within each other, but overlapping with each other, and the rule comprises determining a candidate component carrier at least according to a position where the terminal is located and a direction of movement and speed of movement of the terminal.
[0002]
2. A base station according to claim 1, characterized in that the new secondary component carrier is in a deactivated state after being added by a secondary component carrier update unit.
[0003]
3. Base station according to claim 1, characterized in that it additionally comprises a status acquisition unit configured to acquire status information from a terminal, a base station and/or a component carrier, wherein the secondary component carrier update is additionally configured to update the secondary component carrier in case the status information satisfies a predetermined condition.
[0004]
4. Base station according to claim 3, characterized in that the predetermined condition comprises that update of the secondary component carrier is required for a service or is required for the original base station in consideration of an overall load balance of the network or inter-user interference.
[0005]
5. Base station according to claim 3, characterized in that the predetermined condition comprises that a signal on the old secondary component carrier is degraded in quality.
[0006]
6. Base station according to claim 3, characterized in that the predetermined condition comprises that the terminal moves beyond a coverage area of the old secondary component carrier or moves within a coverage area of a base station new.
[0007]
7. Base station according to claim 3, characterized in that the predetermined condition comprises an amount of physical resources for uplink and downlink of the old secondary component carrier is insufficient.
[0008]
A base station according to any one of claims 1 to 7, characterized in that the secondary component carrier update unit further comprises: an activation command transmission unit configured to transmit an activation command to activate the carrier updated minor component carrier in case the updated minor component carrier is not updated.
[0009]
9. Base station according to claim 1, characterized in that the component carrier to be used is additionally determined according to other factors with different priorities in the determination.
[0010]
10. Method for updating a secondary component carrier to a terminal in a carrier aggregation communication network, characterized by the fact that it comprises: transmitting, by a base station hosting an updated secondary component carrier, reconfiguration information of “Control of Radio Resource” to the terminal comprising updated secondary component carrier radio resource configuration information from the terminal to configure the updated secondary component carrier, wherein mobility control information is not included in the “Control” reconfiguration information of Radio Resource”, the updated secondary component carrier being configured without resetting MAC or updating security key, and the method comprises: updating a secondary component carrier further comprising adding a new secondary component carrier or replacing a component carrier old secondary by a new secondary component carrier for the terminal, and determining the component carrier to be used by the terminal at least according to a rule that is decided by a distribution mode in the case where a coverage range distribution of different carriers is available corresponding to the position of the terminal according to the predetermined distribution mode, wherein the predetermined distribution mode and corresponding rule is one of: the predetermined distribution mode is such that the coverage bands of different available carriers are substantially the same, and the rule comprises taking each available carrier as a candidate component carrier; the predetermined mode of distribution is such that there is at least one available carrier, of which the coverage band is substantially contained within the coverage band of at least one other available carrier , and the rule comprises determining a candidate component carrier by o least according to the size of the coverage band of each available carrier; and, the predetermined mode of distribution is such that there are at least two carriers available, of which the coverage bands are substantially non-coincident with each other and not contained within each other, but overlapping with each other, and the rule comprises determining a candidate component carrier at least according to a position where the terminal is located and a direction of movement and speed of movement of the terminal.
[0011]
11. Method according to claim 10, characterized in that the new secondary component carrier is in a deactivated state after being added.
[0012]
Method according to claim 10, characterized in that it additionally comprises acquiring status information from a terminal, a base station and/or a component carrier, wherein the step of adding a new secondary component carrier or replacing an old secondary component carrier by a new secondary component carrier is executed in case the status information satisfies a predetermined condition.
[0013]
13. Method according to claim 12, characterized in that the predetermined condition comprises that update of the secondary component carrier is required for a service or is required for the original base station in consideration of an overall load balance of the network or inter-user interference.
[0014]
14. Method according to claim 12, characterized in that the predetermined condition comprises that a signal on the old secondary component carrier is degraded in quality.
[0015]
Method according to claim 12, characterized in that the predetermined condition comprises that the terminal moves beyond a coverage area of the old secondary component carrier or moves within a coverage area of a new base station. .
[0016]
16. Method according to claim 12, characterized in that the predetermined condition comprises an amount of physical resources for uplink and downlink of the old secondary component carrier is insufficient.
[0017]
Method according to any one of claims 10 to 16, characterized in that it additionally comprises: transmitting an activation command to activate the new secondary component carrier.
[0018]
18. Terminal for a carrier aggregation communication network, comprising: a reconfiguration information receiving unit configured to receive “Radio Resource Control” reconfiguration information from a base station; and a radio resource configuration unit configured to configure a new secondary component carrier with radio resource configuration information comprised in the “Radio Resource Control” reconfiguration information, where mobility control information is not included in the “Radio Resource Control” reconfiguration information, the radio resource configuration unit being configured to configure the new secondary component carrier without MAC reset or security key update, and a secondary component configured to receive an activation command transmitted from the base station to activate the new secondary component carrier, where the secondary component carrier is updated by adding a new secondary component carrier or replacing an old secondary component carrier with a carrier of new secondary component to have it terminal, the component carrier to be used by the terminal is determined at least according to a rule that is decided by a distribution mode in the case where a coverage range distribution of different available carriers corresponding to the position of the terminal according to the predetermined distribution mode, wherein the predetermined distribution mode and corresponding rule is one of: the predetermined distribution mode is such that the coverage ranges of different available carriers are substantially the same, and the rule comprises taking each available carrier as a candidate component carrier; the predetermined mode of distribution is such that there is at least one available carrier, of which the coverage band is substantially contained within the coverage band of at least one other available carrier, and the rule comprises determining a carrier of candidate component at least according to the size of the coverage band of each available carrier; and, the predetermined mode of distribution is such that there are at least two carriers available, of which the coverage bands are substantially non-coincident with each other and not contained within each other, but overlapping with each other, and the rule comprises determining a candidate component carrier at least according to a position where the terminal is located and a direction of movement and speed of movement of the terminal.
[0019]
19. Terminal according to claim 18, characterized in that the new secondary component carrier is in a deactivated state after being added.
[0020]
20. Terminal according to claim 18, characterized in that the base station is configured to acquire status information from a terminal, a base station and/or a component carrier, and determine to update the secondary component carrier in the case of the state information satisfies a predetermined condition.
[0021]
21. Terminal according to claim 20, characterized in that the predetermined condition comprises that update of the secondary component carrier is required for a service or is required for the original base station in consideration of an overall load balance of the network or inter-user interference.
[0022]
22. Terminal according to claim 20, characterized in that the predetermined condition comprises that a signal on the old secondary component carrier is degraded in quality.
[0023]
23. Terminal according to claim 20, characterized in that the terminal moves beyond a coverage area of the old secondary component carrier or moves within a coverage area of a new base station.
[0024]
24. Terminal according to claim 21, characterized in that the predetermined condition comprises an amount of physical resources for uplink and downlink of the old secondary component carrier is insufficient.
[0025]
25. Terminal according to claim 18, characterized in that the component carrier to be used by the terminal is additionally determined according to other factors with different priorities in the determination.
[0026]
26. Method for updating a secondary component carrier in a carrier aggregation communication network, characterized in that it comprises: receiving “Radio Resource Control” reconfiguration information from the base station; econfiguring a new secondary component carrier with the radio resource configuration information comprised in the “Radio Resource Control” reconfiguration information.wherein the mobility control information is not included in the “Resource Control” reconfiguration information. of Radio”, configure the new secondary component carrier running without MAC reset or security key update and receive an activation command transmitted from the base station to activate the new secondary component carrier, where the secondary component carrier is updated by adding a new secondary component carrier or replacing an old secondary component carrier with a new secondary component carrier for the terminal, determining the component carrier to be used by the terminal at least according to a rule that is decided by a mode distribution in the case where a range distribution coverage of different available carriers corresponding to the position of the terminal according to the predetermined distribution mode, wherein the predetermined distribution mode and corresponding rule is one of: the predetermined distribution mode is such that the coverage ranges of different available carriers are substantially the same, and the rule comprises taking each available carrier as a candidate component carrier; the predetermined mode of distribution is such that there is at least one available carrier, of which the coverage band is substantially contained within the coverage band of at least at least one other available carrier, and the rule comprises determining a candidate component carrier at least in accordance with the size of the coverage band of each available carrier; and, the predetermined mode of distribution is such that there are at least two carriers available, of which the coverage bands are substantially non-coincident with each other and not contained within each other, but overlapping with each other, and the rule comprises determining a candidate component carrier at least according to a position where the terminal is located and a direction of movement and speed of movement of the terminal.
[0027]
27. Communication system, characterized in that it comprises the base station as defined in any one of claims 1 to 9 and the terminal as defined in any one of claims 18 to 25.

类似技术:

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公开号 | 公开日 | 专利标题

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BR112012025577B1|2022-02-01|BASE STATION, METHOD TO UPDATE A COMPONENT CARRIER, TERMINAL, AND COMMUNICATION SYSTEM

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RU2717103C1|2020-03-18|Radio resource control device, radio resource control method, terminal, method for terminal, base station and method for base station

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CN104601314B|2019-12-17|method for selecting component carrier, base station, terminal and communication system

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BR112012027213B1|2021-12-14|METHOD FOR A BASE STATION IN A COMMUNICATION NETWORK, BASE STATION, TERMINAL DEVICE, AND, METHOD FOR A TERMINAL DEVICE

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AU2016202460B2|2017-03-30|Method, base station, terminal and communication system for selecting a component carrier

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公开号 | 公开日

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CN106455076B|2022-01-25|

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JP5943024B2|2016-06-29|

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AU2011247729A1|2012-11-01|

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US20190166601A1|2019-05-30|

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US20210112556A1|2021-04-15|

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BR112012025577A2|2017-08-29|

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WO2011134338A1|2011-11-03|

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EP3598785A1|2020-01-22|

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CA2796018C|2018-10-23|

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MX339577B|2016-05-31|

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RU2563149C2|2015-09-20|

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CN102238522A|2011-11-09|

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RU2628132C2|2017-08-15|

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EP2566202A1|2013-03-06|

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CA2796018A1|2011-11-03|

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EP3337207A1|2018-06-20|

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JP5510609B2|2014-06-04|

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EP3890380A1|2021-10-06|

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MX2012012587A|2012-12-17|

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CN113194537A|2021-07-30|

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JP2013529426A|2013-07-18|

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RU2012151256A|2014-06-10|

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JP2014150558A|2014-08-21|

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JP2016149812A|2016-08-18|

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EP2566202A4|2016-04-06|

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法律状态:
2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2020-04-28| B15K| Others concerning applications: alteration of classification|Free format text: A CLASSIFICACAO ANTERIOR ERA: H04W 8/24 Ipc: H04L 5/00 (2006.01), H04W 72/04 (2009.01), H04W 74 |

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2020-04-28| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2021-12-14| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2022-02-01| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 02/04/2011, OBSERVADAS AS CONDICOES LEGAIS. PATENTE CONCEDIDA CONFORME ADI 5.529/DF, QUE DETERMINA A ALTERACAO DO PRAZO DE CONCESSAO. |

优先权:

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申请号 | 申请日 | 专利标题

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CN201010162513.4A|CN102238522B|2010-04-30|2010-04-30|Update the method for composition carrier wave, base station, terminal and communication system|

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CN201010162513.4|2010-04-30|

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PCT/CN2011/072407|WO2011134338A1|2010-04-30|2011-04-02|Method, base station, terminal and communication system for updating component carrier|

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