• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    method for allocating resources, method for blind detection, base station, user equipment (eu), user equipment and system for allocating resources. the invention discloses a method for allocating resource including: a base station that calculates several pdcch aggregation degree groups based on the cce resources that can be occupied by pdcch in a substructure, where pdcch aggregation degree groups are divided based on a higher pdcch aggregation degree; the base station setting up at least one degree of aggregation group among the total pdcch degree of aggregation groups as a common search space; and the base station, based on the UE information and common information, determining pdcch aggregation degree groups that are configured as a UE specified search space using a space division function; and the base station fetching a location of the UE specified search space in the determined pdcch aggregation degree groups which are configured as the UE specified seek space and performing the pdcch resource allocation. the invention guarantees the unity of the group numbers of degree of aggregation groups selectable among the degree of aggregation groups that are divided based on the highest degree of aggregation, achieves simplification of allocation modes and improves the efficiency of resource allocation of pcc.
    公开号:BR112012000456B1
    申请号:R112012000456-5
    申请日:2010-06-22
    公开日:2021-06-01
    发明作者:Jianhong Xie
    申请人:Zte Corporation；
    IPC主号:
    专利说明:

    TECHNICAL FIELD
    The invention relates to the field of communication and, in particular, to a method and a system for allocating resources of a downlink control channel for use by long-term evolution, a method for blind detection, a base station and equipment for user. HISTORY OF RELATED TECHNIQUE
    The Physical Downlink Control Channel (PDCCH) is a very important physical downlink channel in a Long Term Evolution (LTE) system. The PDCCH transmits downlink control information and can be used to schedule the Physical Uplink Shared Channel (PUSCH) of the User Equipment (UE) and allocate occupancy resources, and also to inform the UE of the modulation mode of the data. service associated with them in Physical Downlink Shared Channel (PDSCH) and resource occupancy conditions and so on in order to achieve correct receipt and encoding of service data by the UE. The number of Orthogonal Frequency Division Multiplexing (OFDM) symbols that can be occupied by the PDCCH is determined by the content transmitted by the Physical Control Format Indicator Channel (PCFICH). If there is Hybrid Automatic Repeat Request (HARQ) information, then part of the resources determined by PCFICH will also be occupied by the Hybrid Indicator Channel-Physical ARQ (PHICH) and only the rest of the resources can be used for PDCCH. The LTE protocol stipulates that the resource occupied by the PDCCH is allocated by considering the Control Channel Element (CCE) as a basic unit and, finally, the CCE is mapped to the specific physical resources and, however, stipulates that the UE must perform blind detection on the received data by considering the CCE as a basic unit to resolve the control information belonging to the UE.
    Currently, CCE resource allocation is performed directly by considering a CCE as the unit. If the numbers of CCEs occupied (i.e. degree of aggregation) by the given UE at different Transmission Time Intervals (TTI) are different, a base station needs to completely recalculate on the resource allocation and, similarly, the search location of the UE in blind detection must also be recalculated, which brings inconvenience to both resource allocation and blind detection. However, the control channel decoding rate will affect the demodulation and decoding of the downlink data and will also affect the uplink flow and the downlink flow of the entire system. To improve the PDCCH send processing speed and receive processing speed and ensure the uplink flow and downlink flow, it is necessary to improve the efficiency of resource allocation, reduce the complexity of resource allocation on the station side base, and reduce blind detection hours for UE while maintaining resource allocation flexibility. However, an effective solution to solve this problem has not yet been proposed. SUMMARY OF THE INVENTION
    This invention is made in consideration of the problem in the prior art that a relatively complex PDCCH resource allocation scheme leads to low efficiency of PDCCH resource allocation. Therefore, the main objective of this invention is to provide a method and a system to allocate resources of a downlink control channel for use by long-term evolution, a method for blind detection, a base station and user equipment in order to solve the above problem of the prior art.
    According to an embodiment of this invention, a method for allocating resources is provided.
    The method, according to an embodiment of this invention comprises: a base station that calculates several PDCCH aggregation degree groups based on the CCE resources that can be occupied by the PDCCH in a subframe, wherein an aggregation degree of PDCCH major is considered as the PDCCH aggregation degree group; the base station configuring at least one degree of aggregation group among the total PDCCH degree of aggregation groups as a common search space; the base station determining the PDCCH aggregation degree groups where a specified UE search space is located using a space division function based on the UE information and common information; and the base station seeking a location of the UE specified search space in the determined PDCCH aggregation degree groups where the UE specified search space is located and performing the PDCCH resource allocation.
    According to an embodiment of that invention, a method for blind detection is further provided.
    The method according to an embodiment of that invention comprises: the UE detecting common control information in at least one aggregation degree group among the total PDCCH degree of aggregation groups according to a predetermined blind detection mode; the UE determining the PDCCH aggregation degree groups where a specified UE search space is located according to a predetermined space division function based on the UE identification information and common information; and the UE detecting the UE specific control information in the PDCCH aggregation degree groups where the UE specified search space is located and the groups adjacent to the PDCCH aggregation degree groups where the UE specified search space is located in accordance with a predetermined blind detection mode.
    According to an embodiment of this invention, a base station is further provided.
    The base station, according to an embodiment of this invention comprises: a grade of aggregation group calculation module, which is configured to: calculate several PDCCH grade of aggregation groups based on the CCE resources that can be occupied by the PDCCH in a substructure, where a higher degree of aggregation than PDCCH is considered as the degree of aggregation group of PDCCH; a common fetch space configuration module, which is configured to: configure at least one degree of aggregation group amidst the total PDCCH aggregation degree groups as a common search space; a UE-specific control information determination module, which is configured to: determine the PDCCH aggregation degree groups where a specified search space of UE is located using a space division function based on UE information and common information; and a resource allocation module, which is configured to: seek a location of the UE specified seek space within the determined PDCCH aggregation degree groups where the UE specified seek space is located and perform the PDCCH resource allocation .
    According to one embodiment of this invention, a user equipment is further provided.
    The user equipment, according to an embodiment of this invention comprises: a common control information detection module, which is configured to: detect the common control information in at least one aggregation degree group among the degree groups aggregating total PDCCH according to a predetermined blind detection mode; a UE specific control information determination module, which is configured to: determine the PDCCH aggregation degree groups where a specified UE search space is located according to a predetermined space division function based on the UE identification information and common information; and a UE-specific control information detection module, which is configured to: detect the UE-specific control information in the PDCCH aggregation degree groups where the UE specified search space is located and groups adjacent to the degree groups of PDCCH aggregation where the UE specified search space is located according to a predetermined blind detection mode.
    According to one embodiment of this invention, a system for allocating resources is further provided.
    The system, according to an embodiment of this invention comprises: a base station, comprising: an aggregation degree group calculation module, which is configured to: calculate several PDCCH degree aggregation groups based on the resources of CCE that can be occupied by PDCCH in a subframe, where a higher PDCCH aggregation degree is considered as the PDCCH aggregation degree group; a common search space configuration module, which is configured to: configure at least a degree of aggregation group in the middle of the degree of aggregation groups of
    Total PDCCH as a common search space; a first UE-specific control information determination module, which is configured to: determine the PDCCH degree of aggregation groups where a specified UE search space is located using a function of space division based on UE information and common information; and a resource allocation module, which is configured to: fetch a location of the UE specified search space within said determined PDCCH aggregation degree groups where the UE specified seek space is located and perform resource allocation of PDCCH; and user equipment, comprising: a common control information detection module, which is configured to: detect the common control information in at least one degree of aggregation group among the total PDCCH degree of aggregation groups according to a predetermined blind detection mode; a second UE-specific control information determination module, which is configured to: determine the PDCCH aggregation degree groups where the UE specified search space is located according to the space division function based on UE identification information and common information; and a UE-specific control information detection module, which is configured to: detect the UE-specific control information for the PDCCH aggregation degree groups where the UE specified search space is located and groups adjacent to the groups of degree of PDCCH aggregation where the UE specified search space is located according to a predetermined blind detection mode.
    Compared to the prior art, according to this invention, grouping based on the degree of aggregation of higher CCE and resource allocation of CCEs with different degrees of aggregation are performed to ensure the unity of the numbers of groups of selectable degrees of aggregation within of L-CCE aggregation degree, achieve allocation mode simplification and improve PDCCH resource allocation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
    The accompanying drawings described herein are provided for further understanding of this invention and form a part of this invention. The schematic embodiments of this invention and their descriptions are used to explain this invention, but do not constitute improper definitions of this invention. In the drawings:
    Figure 1 is a flowchart illustrating a method for allocating resources in accordance with an embodiment of this invention;
    Figure 2 is a flowchart illustrating a preferred processing scheme of the method for allocating resources, in accordance with an embodiment of this invention;
    Figure 3(a), Figure 3(b) and Figure 3(c) are schematic diagrams illustrating CCE numbering and allocation in the resource allocation process, in accordance with an embodiment of this invention;
    Figure 4 is a schematic diagram illustrating different degrees of aggregation of CCE blindly detected by the UE, according to an embodiment of this invention;
    Figure 5 is a flowchart illustrating a method for blind detection, in accordance with an embodiment of this invention;
    Figure 6 is a flowchart of the preferred processing scheme of the method for blind detection, according to an embodiment of this invention;
    Figure 7 is an architectural diagram of the base station, in accordance with an embodiment of this invention.
    Figure 8 is an architectural diagram of user equipment in accordance with one embodiment of this invention.
    Figure 9 is a diagram of the system for allocating resources, according to an embodiment of this invention, PREFERRED EMBODIMENTS OF THE PRESENT INVENTION
    The main idea of this invention is mainly that grouping based on the degree of aggregation of major CCE (L-CCE) and CCE resource allocation with different degrees of aggregation are performed to ensure unity of the group numbers of selectable aggregation degrees within the degree of aggregation of L-CCE and achieve simplification of the allocation mode. The resource network medium is configured as a common search space. The resource space is divided into a plurality of subspaces according to a division function, which reduces the size of the resource allocation space occupied by the UE-specific control specific information. The resources occupied by the UE-specific control information are determined according to the process of the subspaces first and then the L-CCE groups and finally the CCE, which represents a coarse-grained resource allocation mode for the fine granularity.
    In order to make the objective, the technical scheme and the advantages of this invention clearer, the following gives a more detailed explanation of this invention in combination with the attached drawings and the specific embodiments. METHOD PERFORMANCE
    According to an embodiment of this invention, a method is provided for allocating PDCCH resources for use by LTE.
    Figure 1 is a flowchart showing a method for allocating resources of a downlink control channel in accordance with an embodiment of this invention. As shown in Figure 1, the method comprises: step S102, a base station calculates the number of PDCCH aggregation degree groups based on the CCE control resources that can be occupied by the PDCCH in the subframe, where the degree of larger PDCCH aggregation is considered as a PDCCH aggregation degree group; step S104, the base station sets up at least one aggregation degree group in the middle of the total PDCCH aggregation degree groups as a common search space; step S106, the base station determines a PDCCH aggregation degree group where the specified UE search space is located using a space division function based on the UE information and common information; step S108, the base station fetches the location of the specified UE search space in the determined PDCCH aggregation degree group to allocate the PDCCH resources.
    The following describes the details of the above processing in detail in combination with Figure 2. Figure 2 is a flowchart of a preferred processing scheme of the method for allocating resources, according to an embodiment of this invention. As shown in Figure 2, processing specifically comprises the steps of: step S202, the number of L-CCE groups is calculated according to the highest degree of aggregation L of PDCCH based on the largest number of resources that can be occupied by the PDCCH in k(k,kü{0, 1,...9}) substructures.
    For example, L=8 (if the protocol is adjusted, L can also be adjusted in the same way) according to the existing protocol, the number of CCEs NCcE,k = 87 and the number of groups of 8 CCE NL.CcE, k = 11 in relation to the 20M dual cellular antenna configuration, Control Format Indicator (CFI)=3 and PHICH being 3 groups, and the calculation method for other band widths and under another configuration is similar to this and not if repeat here, where the number of CCEs can be calculated according to the following method: first, determine the total number of Resource Element Groups (REG) by the number of cellular antennas, the cellular bandwidth and CFI in that TTI; then, respectively calculate the numbers of REGs occupied by PCFICH and PHICH, obtain the number of REGs that can be occupied by PDCCH by subtracting the number of REGs occupied by PCFICH and PHICH from the total number of REGs and, finally, determining the number of CCEs based on the ratio of 1 CCE being equal to 9 REGs; step S204, all L-CCE groups are defined as a UE specified search space based on the number of L-CCE groups obtained by the calculation, two L -CCEs in the middle are configured as a common search space, L-CCE groups are numbered by 0, 1...L-1 considering L-CCE group as the unit, and L-CCE groups are divided into N subspaces and N subspaces are numbered. The division methods are the same for different numbers of subspaces.
    Take N=2 as an example, the largest L-CCE group number in the subspaces is NOIL = ^L-ccE,k / N = 5, and the L-CCE groups are numbered from the middle of the two ends in the respective subspaces according to the sequence of 0, 1...4, as shown in Figure 3(a); the common search space is as shown in Figure 3(b), and the numbers in the L-CCE groups are as shown in Figure 3(c); step S206, it is judged whether the UE specific control information exists; if so, step S208 is performed; otherwise this flow is terminated;step S208, the subspace Sk>UEID where CCE occupied by the UE-specific control information is determined by a space division subfunction f(UelD,k) =Yk mod N based on the ID of the UE, the time band number ns, ns G{0, 1...19}, and the subframe number k, where Yk was provided in protocol 36,212;step S210, the L-CCE group number NOkiUEID of CCE occupied by the UE-specific control information in the SkiUEID subspace is determined by the group division function g(UelD,k) =L' {Yk mod NO^UEID} based on the calculated value of Yk;step S212, a location that satisfy the degree of aggregation is fetched in L-CCE groups with a SkiUBiD subspace number and a number within the NOk/UEID space based on the degree of aggregation of PDCCH, and CCE allocation occupied by the UE-specific control information is completed, where the possible PDCCH aggregation degrees are as shown in Figure 4.
    Preferably, in order to better complete the search for CCEs that satisfy the requirements, the base station can complete a quick search by maintaining a resource allocation table.
    After the base station performs the above processing, blind detection and the following processing are performed on the PDCCH on the UE side after the UE receives the PDCCH.
    According to an embodiment of that invention, a method for blind detection of PDCCH in LTE is further provided.
    Figure 5 is a flowchart showing a method for blind detection in accordance with an embodiment of this invention. As shown in Figure 5, the method comprises: step S502, the UE detects the common control information in at least one aggregation degree group among the total PDCCH degree of aggregation groups according to a predetermined blind detection mode preferably, the common control information is detected in two degree of aggregation groups (16 CCEs) in the middle of the total PDCCH degree of aggregation groups; if the protocol changes, a common search space is determined according to the number of common logical channels stipulated in the protocol; step S504, the UE determines the PDCCH aggregation degree group where the specified UE search space is located according to a predetermined space division function based on its identification information and common information; step S506, the UE detects the UE specific control information in the PDCCH aggregation degree group and groups adjacent to it according to a predetermined blind detection mode.
    The following describes the details of the above various processing in combination with Figure 6. Figure 6 is a flowchart showing a preferred processing scheme of the method for blind detection according to an embodiment of this invention. As shown in Figure 6, the flow comprises: step S602, the UE extracts the data from the 2 groups of L-CCE from the middle (continued from the above example L=8), and performs blind detection of the common control information according to a predetermined detection mode. The detection mode here comprises: an aggregation degree progressive increase mode or a aggregation degree progressive decrease mode; first, blind detection of CCE with the degree of aggregation of 8 is performed (twice); if successful, blind detection of CCE with other degrees of aggregation is not performed; and if not, blind detection of CCE with aggregation degree of 4 is performed four times; if successful, the specific content of the control channel is resolved, and if not, it is indicated that the common control channel is not searched; it needs to be explained that it is possible to randomly determine a mode for blind detection if the UE does not have previous information on first detection, eg a progressive magnification mode; the mean time for blind detection is analyzed after the corresponding detection times, another mode is selected again, for example a progressive reduction mode, and then the mean blind detection time is analyzed after a plurality of repetition times; the average times of the two are compared, and the UE can select a blind detection mode with the shortest blind detection time as a stable blind detection mode in a period of time since the number of resources occupied by the specific scheduling information of UEs sent by the cell where the UE resides does not vary frequently overall; however, a blind detection timeout is set, and blind detection mode is reselected when the limit is exceeded; step S604, the UE determines the CCE subspaces occupied by the specific control information using the same subspace division function f(UeID,k) as the base station, and the UE can store the calculation results according to the subframes so as to facilitate direct use in a subframe corresponding to the next frame;step S606, the UE determines the group of L-CCE occupied by the specific control information based on the same L-CCE group division function g(UeID,k) with the base station and extract the data from L-CCE group and adjacent groups from L-CCE. The UE can also store the calculation results according to substructures in order to facilitate direct use in a substructure corresponding to the next structure; step S608, the UE performs blind detection on the data extracted from 2 L-CCEs by a reduction mode progressive (progressive increase) of degree of aggregation. First, blind detection of the degree of aggregation of 8-CCE is performed twice with respective start points of 0 and 0; if not, then blind detection of 4-CCE degree of aggregation is performed twice within the previous L-CCE group with start points of 0 and 4; if it also fails, then blind detection of the degree of aggregation of 2-CCE is performed on the previous 12 CCEs six times with start points of 0, 2, 4, 6, 0 (within the next group of L- CCE), 2 (within the next group of L-CCE); if still not successful, then blind detection of the degree of aggregation of 1-CCE is performed within the previous L-CCE group six times with start points of 0, 1, 2, 3, 4, 5; if it still does not decode correctly, the specific control information belonging to that UE is considered not to exist. APPLIANCE REALIZATION
    According to an embodiment of this invention, a base station is also provided.
    Figure 7 is an architectural diagram showing the base station according to an embodiment of this invention. As shown in Figure 7, the base station comprises: an aggregation degree group calculation module 12, a common search space configuration module 14, a UE specific control information determination module 16 and a module resource allocation 18.
    The degree of aggregation group calculation module 12 is configured to: calculate the number of degree of aggregation groups of PDCCH based on the CCE resources that can be occupied by the PDCCH in a substructure, where the degree of aggregation of PDCCH major is considered as a group of PDCCH aggregation degree; preferably, the largest PDCCH aggregation degree is 8 CCEs; the common seek space configuration module 14 is connected to the degree of aggregation group calculation module 12 and is configured to: configure at least one degree of aggregation group in the middle of all PDCCH aggregation degree groups as a common search space; preferably, two aggregation degree groups in the middle of all PDCCH aggregation degree groups are configured as common control information; if the protocol changes, a common search space is determined based on the common logical channel number stipulated by the protocol; the UE specific control information determination module 16 is connected to the aggregation degree group calculation module 12 and is configured to: determine a PDCCH aggregation degree group where the specified UE search space is located using a space division function based on the UE information and public information; and a resource allocation module 18 is connected to the UE specific control information determination module 16 and is configured to: seek the location of the UE specified search space within said determined PDCCH aggregation degree group to allocate the PDCCH resources; wherein the UE specified fetch space determination module 16 may comprise: a space division sub-module (not shown), which is configured to: divide the total PDCCH aggregation degree groups into a plurality of subspaces, wherein each subspace includes a plurality of PDCCH aggregation degree groups; the first determination submodule (not shown), which is configured to: determine the subspaces where the UE specified search space is located using a subfunction of space division, based on the UE identification information, the time slot number and the subframe number; and the second determination sub-module (not shown), which is configured to: determine the PDCCH aggregation degree groups within the subspace where the UE specified search space is located by a base station using a group division function.
    According to one embodiment of this invention, user equipment is still provided.
    Figure 8 is a diagram showing the structure of user equipment according to an embodiment of this invention. As shown in Figure 8, the user equipment comprises: a common control information detection module 22, a UE specific control information determination module 24, and a UE specific control information detection module 26.
    The public control information detection module 22 is configured to: detect the common control information in at least one degree of aggregation group among the total PDCCH degree of aggregation groups according to a predetermined blind detection mode, preferably detecting the common control information in two aggregation degree groups in the middle of the total PDCCH degree of aggregation groups; the user equipment performs blind detection according to one of the following modes: an aggregation degree progressive increase mode and a aggregation degree progressive decrease mode; in addition, the user equipment performs the statistical study in a plurality of blind detection times, a final detection mode is determined.
    The UE specific control information determination module 24 is configured to: determine a PDCCH aggregation degree group where a UE specified search space is located according to a predetermined space division function based on the information of UE common identification and information; UE specific control information detection module 26 is connected to UE specific control information determination module 24 and is configured to: detect the UE specific control information in the grade group of aggregating PDCCH and groups adjacent to it according to the predetermined blind detection mode; wherein the UE specific control information determination module 24 comprises: the first determination sub-module (not shown), which is configured to: determine the subspaces where the UE specified search space is located using a predetermined space division subfunction; and the second determination sub-module (not shown), which is configured to: determine the PDCCH aggregation degree groups within the subspaces where the UE specified search space is adjusted using a predetermined group division function. SYSTEM PERFORMANCE
    According to an embodiment of this invention, a system for allocating PDCCH resources in LTE is further provided.
    Figure 9 is a diagram showing a system for allocating resources in accordance with an embodiment of this invention. As shown in Figure 9, the system comprises: a base station 10 and user equipment 20 .
    The base station 10 is connected to the user equipment 20, and the specific structures of the base station 10 and the user equipment 20 refer to Figure 7 and Figure 8, which are not repeated here.
    To summarize, according to the above technical scheme of this invention, grouping based on the degree of aggregation of the largest CCE (L-CCE) and CCE resource allocation with different degrees of aggregation are performed to ensure the unity of the group numbers of selectable aggregation degrees within the L-CCE aggregation degree and achieve allocation mode simplification. The middle of the resource network is configured as a common search space. The resource space is divided into a plurality of subspaces by a division function, which reduces the size of the resource allocation space occupied by the UE-specific control specific information. The UE-specific control information is determined according to the process of the first subspace and then the L-CCE groups and finally the CCE, which represents a coarse-grained to fine-grained resource allocation mode and improves the efficiency of PDCCH resource allocation.
    The above description is only about embodiments of this invention, but is not used to limit this invention. It should be understood by those skilled in the art that this invention may include numerous modifications and alterations. All variations, equivalent substitutions and improvements that are within the spirit and essence of this invention shall be within the scope of the claims of this invention. INDUSTRIAL APPLICABILITY
    This invention guarantees the unity of the group numbers of selectable aggregation degrees within the L-CCE aggregation degree, achieves simplification of allocation modes, and improves the efficiency of PDCCH resource allocation according to grouping by degree higher CCE aggregation and CCE resource allocation with different degrees of aggregation.
    权利要求:
    Claims (16)
    [0001]
    1. METHOD TO ALLOCATE RESOURCES, characterized by comprising: a base station that calculates a number of Physical Downlink Control Channel, PDCCH, aggregation degree groups totals based on the resources of the Control Channel Element, CCE, which can be occupied by the PDCCH in a subframe, and a larger PDCCH aggregation degree is considered as the number of CEE resources per PDCCH aggregation degree group; the base station which configures at least one localized aggregation degree group among the total PDCCH aggregation degree groups as a common search space; the base station determining the PDCCH aggregation degree groups where a specified UE search space is located using a space division function with based on User Equipment, EU, and common information; and the base station seeking a location of the UE specified search space in the determined PDCCH aggregation degree groups where the UE specified seek space is located and performing the PDCCH resource allocation.
    [0002]
    2. METHOD according to claim 1, characterized by the step of determining the PDCCH aggregation degree group where the specified UE search space is located using the space division function comprises: the base station dividing the total PDCCH grade aggregation groups in a plurality of subspaces, each subspace including a plurality of PDCCH grade aggregation groups; the base station determining the subspaces where the UE specified search space is located using a space division subfunction, based on the UE identification information, a time slot number and a subframe number; and the base station determining the PDCCH aggregation degree groups within the subspaces where the UE specified search space is located using a group division function.
    [0003]
    3. METHOD, according to claim 1, characterized by the greater degree of aggregation of PDCCH being 8 CCEs.
    [0004]
    4. METHOD according to claim 1, characterized in that, before the step of calculating the number of total PDCCH degree of aggregation groups, the method further comprises: the base station calculating the CCE resources that can be occupied by the PDCCH based on the following information: a number of cellular antennas, a cellular bandwidth, and a control format indicator.
    [0005]
    5. METHOD FOR BLIND DETECTION, characterized in that it comprises: the user equipment, UE, which detects the common control information in at least one aggregation degree group located in the middle of the Physical Downlink Control Channel aggregation degree groups , PDCCH, totals according to a predetermined blind detection mode, wherein a larger PDCCH aggregation degree is considered as the number of Control Channel Element, CCE, resources per aggregation degree group; the PDCCH aggregation degree groups where a UE specified search space is located according to a predetermined space division function based on the UE identification information and common information; and the UE detecting the UE specific control information in the PDCCH aggregation degree groups where the UE specified search space is located and groups adjacent to the PDCCH aggregation degree groups where the UE specified search space is located according to the predetermined blind detection mode.
    [0006]
    6. METHOD according to claim 5, characterized in that the UE step determining the PDCCH aggregation degree groups where the UE specified search space is located according to the predetermined space division function comprises: the UE determining a subspace where the UE specified search space is located using a predetermined space division subfunction; and the UE determining the PDCCH aggregation degree groups within the subspace where the specified UE search space is located using a predetermined group division function.
    [0007]
    7. METHOD, according to claim 5, prior to the step of the UE that detects the common control information, the method is characterized by further comprising: the UE that performs the statistical study in blind detection for a plurality of times, and which determines a final blind detection mode.
    [0008]
    8. METHOD according to claim 5, characterized in that the predetermined blind detection mode includes one of the following: a progressively increasing aggregation degree mode and a progressively decreasing aggregation degree mode.
    [0009]
    9. BASE STATION, characterized by comprising: a degree of aggregation group calculation module, which is configured to: calculate a number of Physical Downlink Control Channel, PDCCH, totals of degree of aggregation degree groups based on resources of Control Channel Element, CCE, which can be occupied by PDCCH in a substructure, and a higher degree of aggregation of PDCCH as the number of CEE resources per group of degree of aggregation of PDCCH; common search, which is configured to: configure at least one degree of aggregation group located in the middle of the total PDCCH degree of aggregation groups as a common search space; a User Equipment-specific control information determination module, UE, which is configured to: determine the PDCCH aggregation degree groups where a specified UE search space is located using a space division function based on the UE information and information common; and a resource allocation module, which is configured to: seek a location of the UE specified seek space within the determined PDCCH aggregation degree groups where the UE specified seek space is located and perform the PDCCH resource allocation .
    [0010]
    BASE STATION according to claim 9, characterized in that the UE specified search space determination module comprises: a space division sub-module, which is configured to: divide the total PDCCH aggregation degree groups into a plurality of subspaces, wherein each subspace includes a plurality of PDCCH aggregation degree groups; a first determining submodule, which is configured to: determine the subspaces where the UE specified search space is located using a division function subspace based on the identification information of the UE, a time band number and a number of substructures; and a second determining sub-module, which is configured to: determine the PDCCH aggregation degree groups within the subspaces where the UE specified search space is located using a group division function.
    [0011]
    11. BASE STATION, according to claim 9, characterized in that the greater degree of aggregation of PDCCH is 8 CCEs.
    [0012]
    12. USER EQUIPMENT, UE, characterized by comprising: a common control information detection module, which is configured to: detect the common control information in at least one degree of aggregation group among the groups of degree of aggregation of Physical Downlink Control Channel, PDCCH, totals according to the predetermined blind detection mode, where a greater degree of PDCCH aggregation is considered as the number of Control Channel Element, CCE resources, per degree group aggregation; a UE-specific control information determination module, which is configured to: determine the PDCCH degree of aggregation groups where a specified UE search space is located according to a predetermined space division function with based on UE identification information and common information; and a UE-specific control information detection module, which is configured to: detect the UE-specific control information in the PDCCH aggregation degree groups where the UE specified search space is located and groups adjacent to the degree groups of PDCCH aggregation where the UE specified search space is located according to a predetermined blind detection mode.
    [0013]
    13. USER EQUIPMENT according to claim 12, characterized in that the UE-specific control information determination module comprises: a first determination sub-module, which is configured to: determine the subspaces where the UE-specified search space is located using a predetermined subspace division function; and a second determining sub-module, which is configured to: determine the PDCCH aggregation degree groups within the subspace where the UE specified search space is located using a predetermined group division function.
    [0014]
    14. USER EQUIPMENT according to claim 12, characterized in that the common control information detection module is further configured to: perform the statistical study in blind detection for a plurality of times, and determine a final detection mode.
    [0015]
    15. USER EQUIPMENT according to claim 12, characterized in that the predetermined blind detection mode includes at least one of a mode of progressive increase of degree of aggregation and a mode of progressive reduction of degree of aggregation.
    [0016]
    16. RESOURCE ALLOCATION SYSTEM, characterized in that it comprises: a base station, comprising: an aggregation degree group calculation module, which is configured to: calculate a number of Downlink Control Channel degree of aggregation groups Physical (PDCCH) totals based on the Control Channel Element, CCE, resources that can be occupied by the PDCCH in a substructure, and a higher PDCCH aggregation degree as the number of CCE resources per aggregation degree group of PDCCH; a common search space configuration module, which is configured to: configure at least one degree of aggregation group located in the middle of the total PDCCH degree of aggregation groups as a common search space; a first determination module of the UE specific control information, which is configured to: determine the PDCCH aggregation degree groups where a specified UE search space is located using a space division based function in EU information and common information; and a resource allocation module, which is configured to: fetch a location of the UE specified search space within said determined PDCCH aggregation degree groups where the UE specified seek space is located and perform resource allocation of PDCCH; and user equipment, comprising: a common control information detection module, which is configured to: detect the common control information in said at least one degree of aggregation group among the PDCCH degree of aggregation groups totals according to a predetermined blind detection mode; a second UE-specific control information determination module, which is configured to: determine the PDCCH aggregation degree groups where the UE specified search space is located accordingly with space division function based on UE identification information and common information; and a UE-specific control information detection module, which is configured to: detect the UE-specific control information for PDCCH aggregation grade groups where the UE specified search space is located and groups adjacent to the grade groups of PDCCH aggregation where the UE specified search space is located according to a predetermined blind detection mode.
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    同族专利:
    公开号 | 公开日
    EP2434825B1|2013-11-20|
    RU2011153112A|2013-09-27|
    ES2442898T3|2014-02-14|
    JP5295430B2|2013-09-18|
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    JP2012531140A|2012-12-06|
    BR112012000456A2|2017-07-11|
    WO2010145570A1|2010-12-23|
    EP2434825A1|2012-03-28|
    RU2496276C2|2013-10-20|
    US20120230266A1|2012-09-13|
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    法律状态:
    2019-01-15| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-02-11| B15K| Others concerning applications: alteration of classification|Free format text: AS CLASSIFICACOES ANTERIORES ERAM: H04W 72/04 , H04B 7/26 Ipc: H04W 72/04 (2009.01), H04L 5/00 (2006.01) |
    2020-02-11| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-05-04| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-06-01| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 22/06/2010, OBSERVADAS AS CONDICOES LEGAIS. PATENTE CONCEDIDA CONFORME ADI 5.529/DF |
    优先权:
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    CN200910207436.7|2009-11-03|
    CN2009102074367A|CN101702828B|2009-11-03|2009-11-03|Resource distribution method and system, and blind detecting method, base station and user device|
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