method for receiving a control channel, method for sending a control channel, user equipment and bas

专利摘要:
METHOD FOR RECEIVING AND SENDING A CONTROL CHANNEL, USER EQUIPMENT AND BASE STATION. The present invention relates to methods for receiving and sending a control channel, an equipment for the user and a base station. The method for receiving a control channel includes: obtaining resource information from the time frequency and the first information from the control channel; determining a search space for the control channel according to the resource information of the time frequency and the first information; and receiving the control channel in the search space. By using the methods, the equipment for the user and the base station according to the modalities of the present invention, the search space of the control channel can be determined according to the resource information of the time frequency and the first information of the control channel, so that the receiving and sending of the control channel can be performed and a capacity of the control channel can be expanded, thereby increasing the efficiency and flexibility of system programming and additionally increasing the experience (... ).
公开号:BR112014010721B1
申请号:R112014010721-1
申请日:2012-06-29
公开日:2020-11-10
发明作者:Lei Guan
申请人:Huawei Technologies Co., Ltd.；
IPC主号:

专利说明:

TECHNICAL FIELD
[001] The present invention relates to the field of communications and, in particular, methods for receiving and sending a control channel, user equipment and a base station in the field of communications. BACKGROUND
[002] In a Long Term Evolution system (Long Term Evolution, abbreviated "LTE"), a minimum unit of time to be programmed by an evolved base station (Evolved NodeB, abbreviated "eNB") is a substructure, being that each substructure includes 2 time slots and each time slot additionally includes 7 symbols. For user equipment (user equipment, abbreviated "UE") programmed into a substructure, the substructure includes a physical downlink control channel (Physical Downlink Control Channel, abbreviated "PDCCH") from the UE. The PDCCH is used to load the programming information from the programmed UE and the programming information includes information such as a physical channel resource allocated to the UE and a modulation and encoding scheme specifically used (Modulation and Encoding Scheme, abbreviated " MCS ").
[003] In a current LTE system, a PDCCH and a shared physical downlink channel (Shared Physical Downlink Channel, abbreviated "PDSCH") exist in a time-split substructure, where the PDCCH is loaded in the first n symbols of the substructure, n can be one of 1, 2, 3 and 4; and the mapping of the downlink data programmed on the PDSCH starts from a symbol (n + 1) ° of the substructure. In a frequency domain, the PDCCH and PDSCH are dispersed, after the interleaving process, over bandwidths of the entire system to obtain frequency diversity gains. After you have performed demodulation and decoding on the PDCCH according to a payload size and aggregation level of the PDCCH based on a specific cell reference signal (Cell Specific Reference Sign, abbreviated "CRS") and in a PDCCH search space, an UE uses a provisional radio network identity specific to the UE (Provisional Radio Network Identity, abbreviated "RNTI") or the identity to decipher a cyclic redundancy check (Cyclic Redundancy Check, abbreviated "CRC"), to verify and determine the EU PDCCH, and performs the corresponding receive or send processing, according to the programming information in the PDCCH, on the programmed data about the PDCCH.
[004] In an LTE system of a current or subsequent version, the introduction of technologies, such as multiple exit multiple entry for multiple users (multiple exit multiple entry, abbreviated "MIMO") and multiple coordinated points (multiple Coordinated Points, abbreviated "CoMP"), causes a limit on a control channel's capacity; therefore, a PDCCH based on transmission in a pre-coded MIMO manner, namely, an enhanced physical downlink control channel (enhanced PDCCH, abbreviated "E-PDCCH") is introduced. The UE can demodulate the E-PDCCH based on a specific reference signal from the UE (UE Specific Reference Sign, abbreviated "UERS").
[005] The demodulation mode of the UERS is introduced in the transmission of the E-PDCCH; therefore, an appropriate solution is required to execute the receiving and sending of the control channel. SHORT DESCRIPTION
[006] The modalities of the present invention offer methods for receiving and sending a control channel, user equipment and a base station, which can perform the receiving and sending of the control channel.
[007] According to one aspect, one embodiment of the present invention provides a method for receiving a control channel, and the method includes: obtaining the frequency-time resource information and the first control channel information; determining a search space for the control channel according to the frequency-time resource information and the first information; and receiving the control channel in the search space.
[008] According to another aspect, an embodiment of the present invention provides a method for sending a control channel, and the method includes: obtaining the frequency-time resource information and the first control channel information; determining a search space for the control channel according to the frequency-time resource information and the first information; and sending the control channel in the search space to a user device.
[009] According to yet another aspect, an embodiment of the present invention provides user equipment, and the user equipment includes: an acquisition module, configured to obtain the frequency-time resource information and the first information of a control channel; a determination module, configured to determine a search space for the control channel according to the resource information of the frequency-time and the first information obtained by the obtaining module; and a receiving module, configured to receive the control channel in the search space determined by the determination module.
[0010] In accordance with yet another aspect, an embodiment of the present invention provides a base station, and the base station includes: a retrieval module, configured to obtain the frequency-time resource information and the first information of a transmission channel. control; a determination module, configured to determine a search space for the control channel according to the resource information of the frequency-time and the first information obtained by the obtaining module; and a first sending module, configured to send the control channel in a search space determined by the determination module to a user device.
[0011] Based on the technical solutions above, when using the methods for receiving and sending the control channel, the user equipment and the base station according to the modalities of the present invention, the search space of the control channel can be determined according to the frequency-time resource information and the first control channel information, so that the receiving and sending of the control channel can be performed and a capacity of the control channel can be expanded, thereby increasing the efficiency and flexibility of system programming, and additionally increasing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] To more clearly describe the technical solutions in the modalities of the present invention, the following briefly introduces the attached drawings required for the description of the modalities of the present invention. Supposedly, the drawings attached in the description below show merely some embodiments of the present invention, and an element skilled in the art can still derive other designs from these attached drawings, without creative efforts.
[0013] Figure 1 is a schematic block diagram of resource blocks and a pair of resource blocks according to an embodiment of the present invention;
[0014] Figure 2 is a schematic flowchart of a method for receiving a control channel according to an embodiment of the present invention;
[0015] Figure 3 is another schematic flowchart of a method for receiving a control channel according to an embodiment of the present invention;
[0016] Figure 4A and Figure 4B consist of a schematic flowchart of a method for determining a search space according to an embodiment of the present invention;
[0017] Figure 5 is a schematic mapping diagram of a search space according to an embodiment of the present invention;
[0018] Figure 6 is another schematic mapping diagram of a search space according to one embodiment of the present invention;
[0019] Figure 7 is a schematic flow chart of a method for sending a control channel according to another embodiment of the present invention;
[0020] Figure 8A and Figure 8B consist of a schematic flowchart of a method for determining a search space according to another embodiment of the present invention;
[0021] Figure 9 is a schematic block diagram of a user equipment according to an embodiment of the present invention;
[0022] Figure 10 is another schematic block diagram of a user equipment according to an embodiment of the present invention;
[0023] Figure 11 is yet another schematic block diagram of a user equipment according to an embodiment of the present invention;
[0024] Figure 12A is a schematic block diagram of a first determination sub-module according to an embodiment of the present invention;
[0025] Figure 12B is a schematic block diagram of a second determination sub-module according to an embodiment of the present invention;
[0026] Figure 13 is a schematic block diagram of a base station according to an embodiment of the present invention;
[0027] Figure 14 is another schematic block diagram of a base station according to an embodiment of the present invention;
[0028] Figure 15 is another schematic block diagram of a base station according to an embodiment of the present invention;
[0029] Figure 16A is a schematic block diagram of a first determination sub-module according to an embodiment of the present invention; and
[0030] Figure 16B is a schematic block diagram of a second determination sub-module according to an embodiment of the present invention. DESCRIPTION OF THE MODALITIES
[0031] The following describes clearly and integrally the technical solutions in the modalities of the present invention with reference to the attached drawings in the modalities of the present invention. Supposedly, the described modalities are merely a part, rather than all the modalities of the present invention. All other modalities obtained by an element skilled in the art based on the modalities of the present invention without creative efforts are within the scope of protection of the present invention.
[0032] It should be understood that the technical solutions of the modalities of the present invention can be applied in several communication systems, for example: global mobile communication system (Global Mobile Communication System, abbreviated "GSM"), multiple access system of code division (Code Division Multiple Access, abbreviated "CDMA"), broadband code division multiple access system (Broadband Code Division Multiple Access, abbreviated "WCDMA"), packet radio service general (General Packet Radio Service, abbreviated "GPRS"), long term evolution system (Long Term Evolution, abbreviated "LTE"), LTE frequency division duplex system (Frequency Division Duplex, abbreviated " FDD "), LTE time division duplex (Time Division Duplex, abbreviated" TDD "), universal mobile telecommunications system (Universal Mobile Telecommunications System, abbreviated" UMTS "), worldwide interoperability communication system ial for microwave access (Worldwide Interoperability for Microwave Access, abbreviated "WiMAX") and others.
[0033] It should also be understood that, in the modalities of the present invention, user equipment (user equipment, abbreviated "UE") can be called a terminal (terminal), a mobile station (mobile station, abbreviated "MS") , a mobile terminal (mobile terminal) and others and that the user equipment can communicate with one or more core networks using a radio access network (Radio Access Network, abbreviated "RAN"). For example, the user equipment can be a mobile phone (or called a "cell phone"), a computer with a mobile terminal and still others; for example, the user equipment can also be a portable, pocket, handheld mobile device, attached to the computer or mounted to the vehicle, which communicates voice and / or data to the radio access network.
[0034] In the embodiments of the present invention, a base station can be a base station (Base Transceiver Station, abbreviated "BTS") in GSM or CDMA, it can also be a base station (NodeB, abbreviated "NB") in WCDMA and it can also be an evolved base station (NodeB evolucionai, abbreviated "ENB or e-NodeB") in LTE; the present invention is not limited to that. For ease of description, an eNB of the base station and a user equipment UE are used as an example in the following modalities.
[0035] It should be understood that an E-PDCCH is in an area for the transmission of downlink data in a superstructure and there is no control area for the first n symbols in the substructure and the E-PDCCH and a PDSCH are in the area for the transmission of downlink data with frequency division, that is, the E-PDCCH and PDSCH occupy different resource blocks (Resource Block, abbreviated "RB"). For example, an E-PDCCH at an aggregation level of 1, 2, 4 or 8, respectively, needs to occupy 1, 2, 4 or 8 RBs. As shown in Figure 1, an RB occupies 12 subcarriers in a frequency domain and occupies half of a substructure, namely a time interval, in a time domain, for example, RBO occupies the time interval 0 and RB1 occupies time slot 1; a RB pair (RB pair) occupies 12 subcarriers in the frequency domain, the same as an RB, but occupies a complete substructure in the time domain.
[0036] Figure 2 is a schematic flow chart of a method 100 for receiving a control channel according to an embodiment of the present invention. As shown in Figure 2, method 100 includes:
[0037] S110: Obtaining the resource information of the frequency-time and the first information of the control channel.
[0038] S120: The determination of a search space for the control channel according to the frequency-time resource information and the first information.
[0039] S130: Receiving the control channel in the search space.
[0040] To receive a control channel, a user equipment can obtain the frequency-time resource information and the first control channel information, determine a search space for the control channel according to the resource information of the frequency-time and with the first information and then receive the control channel in the search space of the control channel.
[0041] Therefore, when using the method for receiving the control channel according to the modality of the present invention, the search space of the control channel can be determined according to the resource information of the frequency-time and the first ones. control channel information, so that the receiving and sending of the control channel can be performed, and a capacity of the control channel can be expanded, thereby increasing the efficiency and flexibility of system programming, and additionally increasing the experience of user.
[0042] In the embodiment of the present invention, it should be understood that the receipt, by the user equipment, of the control channel in the search space may include: the execution, by the user equipment, of blind detection in the determined search space of the channel control and receiving the control channel after having detected the control channel of the user equipment. It should also be understood that, after receiving the control channel, the user equipment can execute, according to the control signaling loaded by the control channel, receiving or sending data using a data channel indicated by the control signaling .
[0043] It should be understood that a control channel that includes an intensified physical downlink control E-PDCCH channel is used as an example for the description in the embodiment of the present invention, but the embodiment of the present invention is not limited to that .
[0044] In the embodiment of the present invention, as shown in Figure 3, method 100 for receiving the control channel according to the embodiment of the present invention may also include:
[0045] S140: The user equipment that receives the first signal sent by a base station, in which the first signal includes the frequency-time resource information and the first information.
[0046] In this case, S110 specifically includes: obtaining, by the user's equipment, the frequency-time resource information and the first information according to the first signal.
[0047] In S140, the first signaling can be a high-layer signaling, for example, the radio resource control signaling (Radio Resource Control, abbreviated "RRC") or the media access control signaling ( Media Access Control, abbreviated "MAC"); and the first signaling can also be a physical layer signaling, for example, PDCCH signaling or other physical layer signaling.
[0048] It should be understood that the first signaling can include a part of the signaling or include multiple parts of the signaling, that is, the base station can send, using a part of the signaling or at least two parts of the signaling, the resource information of the frequency-time and the first information to the user equipment. When the base station transmits the frequency-time resource information and the first information using at least two parts of the signaling, each part of the signaling in at least two parts of the signaling can carry all or part of the frequency-time resource information or the first information and can also load a part of the frequency-time resource information and the first information; the embodiment of the present invention is not limited to that.
[0049] In S110, the user equipment obtains the resource information of the frequency-time and the first information. In the embodiment of the present invention, the frequency-time resource information is used to indicate a frequency-time resource of the control channel, for example, the frequency-time resource information can be a set of RBs or RB pairs. . When using frequency-time resource information as a set of RB pairs as an example, the frequency-time resource of the control channel can be a group of RB pairs, including at least one RB pair, and each RB pair in at least one RB pair can be continuous or discontinuous in physical resources. The E-PDCCH of the EU user equipment can occupy at least one RB or RB pair in the set of RB pairs.
[0050] In the embodiment of the present invention, optionally, the first information includes the configuration information of a reference signal specific to the UERS user equipment, and / or information about the position of the search space, in which the configuration information UERS are used to receive the control channel. It should be understood that the UERS user equipment specific reference signal is used to demodulate the user equipment control channel, and the UERS configuration information may include information, such as a UERS antenna port number, the coding code corresponding to an antenna port and the number of antenna ports.
[0051] In S120, the user equipment can determine the search space of the control channel according to the frequency-time resource information and the first information. Optionally, in the mode of the present invention, the user equipment can determine the search space of the control channel according to the frequency-time resource information, a first mapping relationship between the frequency-time resource information and a search space resource, and position information; and the user equipment can also determine the search space that corresponds to the configuration information according to the frequency-time resource information, the first mapping relationship between the frequency-time resource information and the resource of the search space, and configuration information. Descriptions are given below with reference to Figure 4A and Figure 4B, separately.
[0052] It should be understood that the search space resource can be the search space of the control channel finally obtained by the user equipment and can also be at least two candidate search spaces of the control channel. When the search space resource is the candidate search spaces of the control channel, the user equipment needs additional and finally obtain, at least in the two candidate search spaces included in the search space resource, the channel search space of control.
[0053] As shown in Figure 4A, a method 200 for determining the search space of the control channel according to an embodiment of the present invention may include:
[0054] S210: The user equipment that determines a search space resource according to the frequency-time resource information and a first mapping relationship between the frequency-time resource information and the search space resource .
[0055] S220: The user equipment that determines, in the search space resource, the search space of the control channel according to the information about the position.
[0056] In S210, the user equipment can determine, according to the frequency-time resource information, a frequency-time resource configured for the user equipment and can also determine, according to the first mapping relationship between the frequency-time resource information and the search space resource, a mapping rule from the control channel's search space resource to the configured frequency-time resource, to determine the search space resource.
[0057] Specifically, assuming that the frequency-time resource is a group of RB pairs, including N pairs of RB. The sequence numbers of the N RB pairs are, for example, 0, 1 ... and N-1 and definitely, the N RB pairs can be mapped to physical resources, continuously or discontinuously. For example, a mapping method for the search space feature is that the UE control channel search space mapping starts from the 0th pair of RB in order. When using an aggregation level of an RB as an example, the candidate E-PDCCH resources in the search space of the UE control channel is a first RB in the RB 0 pair, a second RB in the RB 0 pair, a first RB in the pair of RB 1, a second RB in the pair of RB 1 ... and so on. For example, another method of mapping for the search space feature is that the search space of the UE control channel can adopt a discrete mapping way. As shown in Figure 5, when using an aggregation level of an RB as an example, the candidate E-PDCCH resources in the search space of the control channel are the first 3 pairs of RB 0, 1 and 2 and the last 3 pairs of RB N-3, N-2 and N-1 in the configured frequency-time resource. Other mapping relationships at one aggregation level of an RB are not limited in the present invention, and the mapping relationships at other aggregation levels are also not limited in the present invention.
[0058] In S220, after having determined the search space resource, the user equipment can determine, in the search space resource, the control channel search space according to the position information included in the first ones information.
[0059] Specifically, an E-PDCCH at an aggregation level of an RB, shown in Figure 5, is used as an example for the description. For example, the UE can obtain, according to the RRC signaling, the resource information of the E-PDCCH frequency-time and the first information that includes information about the position of the search space. Therefore, the UE can determine the search space of the control channel according to the frequency-time resource information, the first mapping relationship between the frequency-time resource information and the search space resource and the information on the position loaded in the first signal.
[0060] It should be understood that the first mapping relationship between the frequency-time resource information and the search space resource refers to a way of mapping the search space resource to the frequency-time resource, the namely, a way of mapping a candidate E-PDCCH in the search space resource of the control channel to the frequency-time resource. A candidate E-PDCCH is used as an example for the following description. If a part of the resources A1 of a candidate control channel A occupies a part of an RB of a first time interval in the pair of RB 0 and another part of resources A2 of the candidate control channel A occupies a part of an RB of a second time slot in the RB N-3 pair, the RB of the first time slot in the RB 0 pair and the RB of the second time slot in the RB N-3 pair can be considered as the search space resource. Other mapping relationships are not limited in the present invention. The UE can obtain, using the search space information in the first signal, information about the specific position of the control channel in the search space resource. For example, the UE obtains the specific parts of an RB that are occupied separately by the parts of resources A1 and A2 of the candidate control channel, for example, A1 occupies an upper half of the RB and A2 occupies a lower half of the RB.
[0061] It should be understood that the first signal that includes information about the position may belong to the RRC signal above and may also be another RRC signal or physical layer signal. In addition, other ways of dividing an RB are not limited in the present invention and the control channels at other levels of aggregation are also not limited here.
[0062] An E-PDCCH candidate A is used additionally as an example for the description. For example, the E-PDCCH A search space resource is obtained by the user equipment according to the frequency-time resource information and the first mapping relationship between the frequency-time resource information and the resource of the search space includes: a) the RB of the first time slot or a part of the RB of the first time slot in the pair of RB 0 occupied by A1 and the RB of the second time slot or a part of the RB of the second time slot in the pair of RB N-3 occupied by A2; and b) the RB of the second time slot or a part of the RB of the second time slot in the pair of RB 0 occupied by A1 and the RB of the first time slot or a part of the RB of the first time slot in the pair of RB N -3 occupied by A2. The user equipment can also determine, according to the position information, that a final search space is equivalent to a) or b) above in the search space resource. Other ways of mapping are not limited in the present invention.
[0063] As shown in Figure 4B, method 200 for determining the search space of the control channel according to an embodiment of the present invention may also include:
[0064] S210: The user equipment that determines a search space resource according to the frequency-time resource information and a first mapping relationship between the frequency-time resource information and the search space resource .
[0065] S230: The user equipment that determines, in the search space resource, the search space that corresponds to the configuration information according to a second mapping relationship between the configuration information and the search space, and / or configuration information.
[0066] In S230, after having determined the search space resource, the UE can determine, in the search space resource, the search space of the control channel that corresponds to the UE UERS configuration information according to the UERS configuration information, and / or the second mapping relationship between the UERS configuration information and the E-PDCCH search space.
[0067] It should be understood that the second mapping relationship between the UERS configuration information and the search space can be explained as a mapping relationship between the UERS configuration information and the corresponding search space, in which the mapping relation is a specific mapping relation of the UE, for example, a search space that corresponds to a UERS of an antenna port 7 of UE1 is the search space A, and / or, a search space that corresponds to the UERS of an antenna port 8 of UE1 is search space B; and a search space that corresponds to a UERS of an antenna port 7 of UE2 is the search space B, and / or a search space that corresponds to a UERS of an antenna port 8 of UE2 is the search space A. In this way, UE1 and UE2 can occupy a search space for the same frequency-time resource with spatial division, thereby increasing the use of the resource.
[0068] The UE can determine the search space of the UE control channel according to the UE UERS configuration information and / or the second mapping relation. Specifically, if the first mapping relationship includes a match between all UERS configuration information and the search space, the second mapping relationship is not required, and the final search space can be determined in the search space resource only according to the UERS configuration information; and if the first mapping relationship includes only the search space resource, the UERS configuration information and the second mapping relationship between the configuration information and the search space need to be known to determine the final search space in the resource the search space.
[0069] For example, if an antenna port 7 is configured for the UE's UERS, the UE can determine a search space resource including search space A and search space B according to the resource information of the frequency-time and the first mapping relationship between the frequency-time resource information and the search space resource; and the UE further determines that the search space of the UE control channel is the search space A in the search space resource according to the configuration information and / or the second mapping relationship between the configuration information and the search space.
[0070] It should be understood that the above correspondence or the mapping relationship between the search space and the UERS configuration information refers to this: if the UE receives an E-PDCCH in the search space based on information from configuration of the UE UERS, it can be understood that the search space is a search space that corresponds to the configuration information of the UE UERS.
[0071] Specifically, an E-PDCCH at an aggregation level of an RB, shown in Figure 5, is used as an example for the description. For example, the UE can obtain, according to the RRC signaling, the E-PDCCH frequency-time resource information and the first information that includes the UERS configuration information. Therefore, the UE can determine the search space of the control channel according to the frequency-time resource information, the first mapping relationship between the frequency-time resource information and the search space resource and the information settings loaded on the first signal.
[0072] The UE can also determine a specific search space according to the UERS configuration information. For example, the UE obtains the specific parts of an RB that are occupied separately by two parts of resources A1 and A2 of the candidate control channel, for example, if the UERS configuration information is the single antenna port 7 and the code coding 0, A1 occupies an upper half of an RB of a first time slot in the RB pair 0 and A2 occupies a lower half of an RB of a second time slot in the RB pair N-3; and if the UERS configuration information is the single antenna port 8 and the coding code 0, A1 occupies a lower half of the RB of the first time slot in the pair of RB 0 and A2 occupies an upper half of the RB of the second interval of time in the pair of RB N-3.
[0073] It should be understood that the first signal that includes the configuration information may belong to the RRC signal and may also be another RRC signal or physical layer signal. Other ways of dividing an RB are not limited in the present invention, the control channels at other levels of aggregation are not limited here and the configuration information of the other UERSs are also not limited here.
[0074] The above method can be additional and specifically understood by the fact that the user equipment can determine the search space resource according to the frequency-time resource information and the first mapping relationship between the resource information frequency-time and the search space feature. A candidate E-PDCCH is used as an example for the description. A portion of the resources A1 of candidate control channel A occupies part of the RB of the first time slot in the pair of RB 0 and another part of the resources A2 of the candidate control channel A occupies a part of the RB of the second time slot in the pair of RB N-3, in which the RB of the first time slot in the pair of RB 0 and the RB of the second time slot in the pair of RB N-3 described here can be considered as the resource of the search space of the E- Candidate PDCCH. The user equipment can determine, in the search space resource, the search space of the control channel according to the UERS configuration information and / or the second mapping relationship between the UERS configuration information and the search, that is, it determines the specific parts of an RB pair that are occupied separately by the two parts A1 and A2 of candidate control channel A. For example, if the UERS configuration information is the single antenna port 7 and the coding code 0, A1 occupies the upper half of the RB of the first time slot in the pair of RB 0 and A2 occupies the lower half of the RB of the second time slot in the pair of RB N-3; and if the UERS configuration information is the single antenna port 8 and the coding code 0, A1 occupies the lower half of the RB of the first time slot in the pair of RB 0 and A2 occupies the upper half of the RB of the second interval of time in the pair of RB N-3. It can be seen that there is a correspondence between the UERS configuration information and the search space, that is, the determined search space is a search space that corresponds to the UERS configuration information.
[0075] An E-PDCCH candidate A is used additionally as an example for the description. For example, the E-PDCCH A search space resource is obtained by the user equipment according to the frequency-time resource and the first mapping relationship between the frequency-time resource and the search space resource includes : a) the RB of the first time slot or a part of the RB of the first time slot in the pair of RB 0 occupied by A1 and the RB of the second time slot or a part of the RB of the second time slot in the RB pair N-3 occupied by A2; and b) the RB of the second time slot or a part of the RB of the second time slot in the pair of RB 0 occupied by A1 and the RB of the first time slot or a part of the RB of the first time slot in the pair of RB N -3 occupied by A2. The user equipment can also determine, according to the UERS configuration information, and / or the second mapping relationship between the UERS configuration information and the search space, that a search space is equivalent to a) or b) above in the search space feature. For example, if the UERS configuration information is the single antenna port 7 and the coding code 0, the search space of the control channel is a); and if the UERS configuration information is the single antenna port 8 and the coding code 0, the search space is b). It can be seen that there is a correspondence between the UERS configuration information and the search space, that is, the determined search space is a search space that corresponds to the UERS configuration information. Information, such as other mapping ways and UERS configuration information, is not limited here.
[0076] It should be understood that, in the embodiments of the present invention, the sequence numbers of the above processes do not indicate an execution sequence. The sequence of execution of the processes must be determined based on their functions and internal logic and must not constitute any limitation to the process of implementing the modalities of the present invention.
[0077] Therefore, when using the method for receiving the control channel according to the modality of the present invention, the search space of the control channel can be determined according to the resource information of the frequency-time and the first ones. control channel information, so that the receiving and sending of the control channel can be performed and a capacity of the control channel can be expanded, thereby increasing the efficiency and flexibility of system programming, and additionally increasing the user experience. user.
[0078] In the mode of the present invention, the user equipment can obtain, upon receiving the second signaling sent by the base station and / or according to a predefined rule, the first mapping relation and the second mapping relation, in which the second signaling includes the first mapping relation and / or the second mapping relation.
[0079] Optionally, the second signal can be a high layer signal, such as an RRC signal or a MAC signal, and it can also be a physical layer signal, such as a PDCCH signal. The UE can obtain, using the second signaling, the first mapping relation and / or the second mapping relation and the UE can also obtain, using an implicit rule, the first mapping relation and / or the second mapping relation. For example, as shown in Figure 5, a search space that corresponds to an antenna port 7 occupies part of the frequency-time resources in the RB 0, 1,2, N-3, N-2 and N pairs -1; and a search space that corresponds to an antenna port 8 occupies another part of the frequency-time resources of the RB pairs above. In another example, as shown in Figure 6, the search space that corresponds to the antenna port 7 occupies the frequency-time resources of the first time intervals in the pairs of RB 0, 1 and 2 and the search space that corresponds antenna port 8 occupies the frequency-time resources of the second time intervals in pairs of RB 0, 1 and 2. In this case, if antenna port 7 is configured for the UERS of the UE, the UE can obtain, from according to the implicit rule above, a search space that corresponds to the antenna port 7.
[0080] In the mode of the present invention, the user equipment can also determine the search space of the control channel according to a third mapping relationship between the frequency-time resource information, the first information and the search space , the frequency-time resource information and the first information.
[0081] In the embodiment of the present invention, optionally, the first mapping relation between the resource information of the frequency-time and the search space, the second mapping relation between the configuration information and the search space or the third relation mapping between frequency-time resource information, configuration information and search space is a user equipment-specific mapping relationship. That is, for different user equipment, the first mapping relation or the second mapping relation varies.
[0082] In the mode of the present invention, the search space of the control channel determined by the user equipment can be distinguished using at least one among: a time resource, a frequency resource and a spatial resource.
[0083] An aggregation level of 2 RBs is used specifically as an example. As shown in Figure 6, the search spaces that correspond to the antenna port 7 and the antenna port 8 are distinguished using the frequency-time resources, that is, a search space that corresponds to the antenna port 7 occupies a anterior half of an RB in each of the RB pairs 0, 1 and 2 and a posterior half of an RB in each of the RB pairs N-3, N-2 and N-1; and a search space corresponding to the antenna port 8 occupies a posterior half of the RB in each of the pairs of RB 0, 1 and 2 and an anterior half of the RB in each of the pairs of RB N-3, N-2 and N-1.
[0084] In particular, an aggregation level of a RB is used again as an example. As shown in Figure 5, the search space corresponding to the antenna port 7 occupies a part of the frequency-time resources in the RB 0, 1, 2, N-3, N-2 and N-1 pairs; and the search space corresponding to antenna port 8 occupies another part of the frequency-time resources of the RB pairs above. It can be seen from this example that each candidate E-PDCCH resource at an aggregation level of a RB occupies two parts of an RB, where each part of the RB is a part of a frequency division of the RB and the UE is notified when signaling that a minimum unit of a configured frequency-time resource of an E-PDCCH is an RB or RB pair; therefore, the UE needs to determine a final search space according to the correspondence between the UERS configuration information and the E-PDCCH search space.
[0085] Furthermore, the method for dividing an RB into multiple parts of the RB is not limited here. Other features of candidate E-PDCCH at a level of aggregation greater than an RB can also adopt the mapping method to divide an RB into multiple parts. Other ways of distinguishing multiple search spaces are also not limited here, for example, search space A and search space B may occupy the same resource as frequency-time, but are different using spatial information, such as gateways. antenna of different UERS.
[0086] In the mode of the present invention, optionally, the user equipment determines the search space of the control channel according to the frequency-time resource information and the first information, in which at least one control channel in the search space occupies a portion of the resources of each RB in at least two RB resource blocks. In this way, a control channel can be increased and the gains in frequency diversity of the control channel can be particularly increased when an aggregation level is low.
[0087] For example, as shown in Figure 5, a control channel B occupies a part of the resources of a first RB in the pair of RB 1, where the part of the resources can be an upper half of the resources of the first RB, for example, an upper half of the RB, or it can also be a lower half of the resources of the first RB, for example, a lower half of the RB; and control channel B additionally occupies a portion of the resources of a second RB in the pair of RB N-2, where the portion of the resources may be an upper half of the resources of the second RB, for example, an upper half of the RB or it can also be a lower half of the resources of the second RB, for example, a lower half of the RB. As shown in Figure 6, a control channel C occupies an anterior half of the resources in the pair of RB 2, and the control channel C additionally occupies a posterior half of the resources in the pair of RB N-1.
[0088] In the mode of the present invention, optionally, the user equipment determines the search space of the control channel according to the frequency-time resource information and the first information, in which at least one control channel in the Search space occupies all or part of the resources of at least two RBs, and at least two RBs occupy a first time slot and a second time slot for a substructure. Therefore, the resource charges of the control channel can be balanced, and gains in diversity between time intervals can be obtained.
[0089] Optionally, if an aggregation level of a control channel is 1, the control channel occupies a part of the resources in at least two RBs, with the resources of the RB being divided with frequency division, and the part of the resources in at least the two RBs is divided with time division, for example, each resource occupies two time intervals. Optionally, the RB intervals between the resource part at least in the two RBs are the same.
[0090] In the embodiment of the present invention, optionally, the user equipment determines the search space of the control channel according to the frequency-time resource information and the first information, where: when a sequence number of an RB or RB pair occupied by a first part of the resources of a first control channel in the search space is i, a sequence number of an RB or a pair of RB occupied by a second part of the resources of the first control channel is N + i-Ncan / M, where M is a natural number, Ncan is the number of control channels that correspond to an aggregation level and are included in the search space of the control channel, and N is the number of RBs or RB pairs that correspond to the frequency-time resource information, or N is equal to Ncan.
[0091] Using Figure 6 as an example and assuming that the number of candidate control channels at an aggregation level of 2 RBs is 6, that is, Ncan = 6 and M is set to 2. When a sequence number of a RB pair occupied by a first part of the resources of a candidate control channel is 1, a sequence number of a RB pair occupied by a second part of the resources of the candidate control channel is N-2.
[0092] Therefore, when using the method for receiving the control channel according to the modality of the present invention, the search space of the control channel can be determined according to the resource information of the frequency-time and the first ones. control channel information, so that the receiving and sending of the control channel can be performed and a capacity of the control channel can be expanded, thereby increasing the efficiency and flexibility of system programming, and additionally increasing the user experience. user.
[0093] In the embodiment of the present invention, optionally, the user equipment (user equipment, UE) determines the search space of the control channel according to the frequency-time resource information and the first information, and the search space additionally includes:
[0094] the number of candidate control channels of the current user equipment that is included in a first resource unit occupied by the search space of the control channel is less than or equal to the maximum number of candidate control channels that can be included in the first resource unit, where the candidate control channel is a candidate control channel at an aggregation level and / or the candidate control channel is a candidate control channel that corresponds to the configuration information of at least one UERS .
[0095] The search space also includes the following: the first resource unit occupied by the search space of the control channel includes all or part of a candidate control channel of the user equipment, and the candidate control channel is a candidate control channel at an aggregation level and / or the candidate control channel is a candidate control channel that corresponds to the configuration information of a UERS.
[0096] The first resource unit can be an RB, an RB pair, an RB group or an RB pair group. The RB group or RB pair group can be a group of RBs or RB pairs that is used for the connection channel estimate and is notified by a base station to the user equipment, that is, the base station adopts the same pre-coding matrix when sending an E-PDCCH in the RB group or in the RB pair group to the user equipment.
[0097] The aggregation level can include 1,2, 4 or other numbers of the first elements of the control channel, that is, a candidate control channel can be formed by 1, 2, 4 or other numbers of the first elements of the channel of control. The first control channel element can be a control channel element (Control Channel Element, CCE) from a PDCCH in an existing LTE system, and other units can also be used to measure the first channel element. control, where the other unit is, for example, an RB, half of an RB, an element of the control channel of other sizes and still others, which are not limited here. It is used as an example for the following description that the aggregation levels are 1 and 2, the first element of the control channel is a CCE and the first resource unit is a pair of RB; other conditions are similar and will not be limited here.
[0098] An example is used for the following description:
[0099] Assuming that the frequency-time resources of an E-PDCCH that are configured for an UE are 4 RB pairs, represented specifically as RB pairs 0, 1, 2 and 3. Furthermore, assuming that the number of E-PDCCH CCEs that are included in an RB pair is 4 and the sequence numbers of the CCEs in the 4 RB pairs can be successively assumed to be 0, 1 ... and 15, in all 16 CCEs. In addition, assuming that the antenna port 7 and the coding code identifier 0 are configured for the UE UERS; and further supposing that the numbers of candidate E-PDCCHs from the UE and in the search spaces at the aggregation levels of 1, 2 and 4 CCEs are all 4 and other levels of aggregation, the UERS configuration information and the number of E- Candidate PDCCHs are not limited here.
[00100] Assuming the search space starts at CCE 0 of RB 0 and if 4 UE candidate E-PDCCHs at an aggregation level of 1 CCE are CCE 0, CCE 1, CCE 2 and CCE 3, the blocking probability E-PDCCH will increase. Specifically, if another UE that has the same UERS configuration with the UE occupies any one of CCE 0, CCE 1, CCE 2 and CCE 3, the 4 CCEs are all unavailable to the UE because of a conflict of UERS, in which the UE's UERS is assumed to occupy the entire RB pair; on the contrary, if another UE that has a UERS configuration different from that of the UE occupies any one of CCE 0, CCE 1, CCE 2 and CCE 3, the other three CCEs not occupied in the 4 CCEs are all available to the UE, because the UEs are distinguished using different UERS configurations. Therefore, it is unnecessary to have an EU candidate E-PDCCH occupying an entire RB pair. One solution is that the number of UE candidate E-PDCCHs in an RB pair is less than the total number of candidate E-PDCCHs, in the same aggregation level, that can be loaded into the RB pair. Specifically, for example, the 4 candidate E-PDCCHs of the UE can separately occupy CCE 0, CCE 1, CCE 4 and CCE 5 and in this way, the above E-PDCCH conflict is lessened. Preferably, the 4 candidate E-PDCCHs of the UE can occupy separately CCE 0, CCE 4, CCE 8 and CCE 12, that is, for a specified aggregation level and a specified UERS configuration, each RB pair includes only one E -PDCCH EU candidate.
[00101] In particular, for a distributed E-PDCCH mapping, that is, a candidate E-PDCCH can be mapped to multiple RBs or RB pairs to obtain frequency diversity gains. In this case, similarly, the above solution may be as follows: for a specified aggregation level and a specified UERS configuration, an RB pair includes only part of an EU candidate E-PDCCH, or an RB pair includes one part of each of the UE's N candidate E-PDCCHs, where N is less than the total number of candidate E-PDCCHs, at the same level of aggregation, which can be loaded into the RB pair. Specifically, when N is set to 2 as an example, a RB pair includes a part of a first candidate E-PDCCH and a part of a second candidate E-PDCCH, which belong to the UE and are at an aggregation level of 1 CCE; and the number of candidate E-PDCCHs at the aggregation level that can be loaded into the RB pair is 4.
[00102] The conditions assumed above are used additionally when considering a search space for an E-PDCCH at an aggregation level of 2 CCEs. Specifically, for an E-PDCCH at an aggregation level of 2 CCEs, 4 the candidate EU E-PDCCHs can separately occupy CCE {0,1}, CCE {4,5}, CCE {8,9} and CCE { 12,13}, that is, the number of candidate E-PDCCHs included in an RB pair is also less than the total number of candidate E-PDCCHs that can be loaded in the RB pair or in addition, a pair of RB includes, at most, all or part of a candidate E-PDCCH.
[00103] The conditions assumed above are used additionally when considering a search space for an E-PDCCH at an aggregation level of 4 CCEs. Specifically, for an E-PDCCH at an aggregation level of 4 CCEs, 4 the UE candidate E-PDCCHs can separately occupy the RB 0 pair, the RB 1 pair, the RB 2 pair and the RB 3 pair , that is, the number of candidate E-PDCCHs included in an RB pair is equal to the number of candidate E-PDCCHs, at the aggregation level, that can be loaded into the RB pair.
[00104] The specific element of the control channel that is occupied by the UE in a pair of RB to search for a candidate E-PDCCH of the UE can be determined using the first information in the above modality. It is used as an example for the description that the first information is the UERS configuration information. The control channel element occupied by the UE in an RB pair matches the UE UERS configuration information and the control channel element occupied specifically by the UE in an RB pair to search for a candidate UE E-PDCCH can be determined using UE UERS correspondence and configuration information.
[00105] The above modalities can be extended to one side of the base station:
[00106] A method for sending a control channel includes: obtaining the resource information of the frequency-time and the first information of the control channel; determining a search space for the control channel according to the frequency-time resource information and the first information; and sending to a user equipment the control channel in the search space.
[00107] The number of candidate control channels of the current user equipment that is included in a first resource unit occupied by the control channel search space is less than or equal to the maximum number of candidate control channels that can be included in the first resource unit, where the candidate control channel is a candidate control channel at an aggregation level and / or the candidate control channel is a candidate control channel that corresponds to the configuration information of a UERS.
[00108] The method also includes the following: the first resource unit occupied by the search space of the control channel includes at most all or part of a candidate control channel of the current user equipment, where the candidate control channel it is a candidate control channel at an aggregation level and / or the candidate control channel is a candidate control channel that corresponds to the configuration information of a UERS.
[00109] A user equipment includes: an acquisition module, configured to obtain the resource information of the frequency-time and the first information of a control channel; a determination module, configured to determine a search space for the control channel according to the resource information of the frequency-time and the first information obtained by the obtaining module; and a first receiving module, configured to receive the control channel in the search space determined by the determination module.
[00110] The determination module includes the following: the number of candidate control channels of the current user equipment that is included in a first resource unit occupied by the search space of the control channel is less than or equal to the number maximum candidate control channels that can be included in the first resource unit, where the candidate control channel is a candidate control channel at an aggregation level and / or the candidate control channel is a candidate control channel that corresponds configuration information for a UERS.
[00111] The determination module also includes the following: the first resource unit occupied by the search space of the control channel includes all or part of a candidate control channel of the user equipment, where the candidate control channel is a candidate control channel at an aggregation level and / or the candidate control channel is a candidate control channel that corresponds to the configuration information of a UERS.
[00112] A base station includes: an acquisition module, configured to obtain the resource information of the frequency-time and the first information of a control channel; a determination module, configured to determine a search space for the control channel according to the resource information of the frequency-time and the first information obtained by the obtaining module; and a first sending module, configured to send the control channel in a search space determined by the determination module to a user device.
[00113] The determination module includes the following: the number of candidate control channels of user equipment that is included in a first resource unit occupied by the search space of the control channel is less than or equal to the maximum number candidate control channels that can be included in the first resource unit, where the candidate control channel is a candidate control channel at an aggregation level and / or the candidate control channel is a candidate control channel that corresponds to the configuration information for a UERS.
[00114] The determination module also includes the following: the first resource unit occupied by the search space of the control channel includes all or part of a candidate control channel of the user equipment, where the candidate control channel is a candidate control channel at an aggregation level and / or the candidate control channel is a candidate control channel that corresponds to the configuration information of a UERS.
[00115] What has been mentioned above describes, with reference to Figure 2 to Figure 6, the method for receiving the control channel according to the modalities of the present invention in detail, from the perspective of a user equipment and what The following will describe, with reference to Figure 7, Figure 8A and Figure 8B, a method for sending control information according to a modality of the present invention, from the perspective of a base station.
[00116] Figure 7 is a schematic flowchart of a method 300 for sending a control channel according to an embodiment of the present invention. As shown in Figure 7, method 300 includes:
[00117] S310: Obtaining the frequency-time resource information and the first control channel information.
[00118] S320: Determination of a search space for the control channel according to the frequency-time resource information and the first information.
[00119] S330: Sending to a user equipment of the control channel in the search space.
[00120] Therefore, when using the method for sending the control channel according to the modality of the present invention, the search space of the control channel can be determined according to the frequency-time resource information and the first information from the control channel, so that the receiving and sending of the control channel can be performed and a capacity of the control channel can be expanded, thereby increasing the efficiency and flexibility of system programming, and additionally increasing the experience of user.
[00121] In the embodiment of the present invention, before configuring a frequency-time resource and the first control channel information for the UE, the base station needs to obtain the frequency-time resource and the configuration information of a UERS and / or information about the position of the search space included in the first information. For configuration on the frequency-time resource of the UE control channel, the base station can configure the UE control channel to a frequency-time resource with a good channel status according to an EU channel state, or the base station can also configure the frequency-time feature according to an interference condition from a neighboring cell.
[00122] For configuration in the UE UERS configuration information, the base station can select the number of UE antenna ports according to a UE channel state and coordinate the corresponding information of the antenna port number and the coding code according to the conditions of multiple UEs in the cell. For configuration in the UE search space position information, the base station can perform the configuration according to the frequency-time feature of the UE control channel, the UERS configuration information and / or a condition of load on the frequency-time resource.
[00123] In the embodiment of the present invention, the base station can send the first signal to the user equipment, where the first signal includes the frequency-time resource information and the first information, so that the user equipment determines the search space of the control channel according to the frequency-time resource information and the first information. Optionally, the frequency-time resource information and the first information can also be configured for the user equipment statically.
[00124] In the embodiment of the present invention, optionally, the first information includes the configuration information of the reference signal specific to the UERS user equipment, and / or the information about the position of the search space, in which the configuration information of the UERS. UERS are used to send the control channel.
[00125] In the mode of the present invention, the base station can determine the search space of the control channel according to the resource information of the frequency-time and the first information. Optionally, in the embodiment of the present invention, the base station can determine the search space of the control channel according to the frequency-time resource information, a first mapping relationship between the frequency-time resource information and a resource search space, and position information; and the base station can also determine the search space that corresponds to the configuration information according to the frequency-time resource information, the first mapping relationship between the frequency-time resource information and the search space resource , and configuration information. Descriptions are given below with reference to Figure 8A and Figure 8B separately.
[00126] In the embodiment of the present invention, as shown in Figure 8A, optionally, a method 400 for determining, by the base station, the search space of the control channel includes the following:
[00127] S410: The determination by the base station of a search space resource according to the frequency-time resource information and a first mapping relationship between the frequency-time resource information and the search space resource .
[00128] S420: The determination by the base station, in the search space resource, of the search space of the control channel according to the information about the position.
[00129] As shown in Figure 8B, method 400 for determining the search space of the control channel according to an embodiment of the present invention can also include the following:
[00130] S410: The determination by the base station of a search space resource according to the frequency-time resource information and a first mapping relationship between the frequency-time resource information and the search space resource .
[00131] S430: The determination by the base station, in the search space resource, of the search space that corresponds to the configuration information according to a second mapping relationship between the configuration information and the search space, and / or configuration information.
[00132] In the embodiment of the present invention, optionally, the base station sends the second signal to the user equipment, wherein the second signal includes the first mapping relationship and / or the second mapping relationship, so that the user equipment determines the search space of the control channel.
[00133] In the embodiment of the present invention, optionally, the base station can also determine the search space of the control channel according to a third mapping relationship between the resource information of the frequency-time, the first information and the space of search, frequency-time resource information and first information.
[00134] In the embodiment of the present invention, optionally, the first mapping relation between the resource information of the frequency-time and the search space, the second mapping relation between the configuration information and the search space or the third relation mapping between the frequency-time resource, the configuration information and the search space is a mapping relationship specific to the user equipment. That is, for different user equipment, the first mapping relation or the second mapping relation varies.
[00135] In the embodiment of the present invention, optionally, the search space of the control channel determined by the base station can be distinguished using at least one of the following: a time resource, a frequency resource and a spatial resource. The search spaces occupy the same resource as the frequency-time with spatial division, thereby increasing the use of the resource.
[00136] In the mode of the present invention, optionally, the base station determines the search space of the control channel according to the frequency-time resource information and the first information, in which at least one control channel in the space search occupies a portion of the resources of each RB in at least two RB resource blocks.
[00137] In the mode of the present invention, optionally, the base station determines the search space of the control channel according to the frequency-time resource information and the first information, in which at least one control channel in the space Search occupies all or part of the resources of at least two RBs, and at least two RBs occupy a first time slot and a second time slot for a substructure. Therefore, the resource charges of the control channel can be balanced, and gains in diversity between time intervals can be obtained.
[00138] Optionally, if an aggregation level of a control channel is 1, the control channel will occupy a part of the resources in at least two RBs, with the resources of the RB being divided with frequency division and the part of the resources at least in the two RBs it is divided with time division, for example, each resource occupies two time intervals. Optionally, the RB intervals between the resource part at least in the two RBs are the same.
[00139] In the embodiment of the present invention, optionally, the base station determines the search space of the control channel according to the frequency-time resource information and the first information, where: when a sequence number of a RB occupied by a first part of the resources of a first control channel in the search space is i, a sequence number of an RB occupied by a second part of resources of the first control channel is N + í-Ncan / M, in that M is a natural number, Ncan is the number of control channels that correspond to an aggregation level and are included in the search space of the control channel and N is the number of RBs or RB pairs that correspond to the information of frequency-time resource, or N is equal to Ncan.
[00140] Therefore, when using the method for sending the control channel according to the modality of the present invention, the search space of the control channel can be determined according to the resource information of the frequency-time and with the first information from the control channel, so that the receiving and sending of the control channel can be performed and a capacity of the control channel can be expanded, thereby increasing the efficiency and flexibility of system programming, and additionally increasing the experience of user.
[00141] What has been mentioned above describes, with reference to Figure 2 to Figure 8B, the methods for receiving and sending the control channel according to the modalities of the present invention in detail and the following will describe, with reference to Figure 9 to Figure 16B, a user equipment and a base station according to modalities of the present invention in detail.
[00142] Figure 9 is a schematic block diagram of a user equipment 600 according to an embodiment of the present invention. As shown in Figure 9, user equipment 600 includes: a retrieval module 610, configured to obtain the frequency-time resource information and the first information from a control channel; a determination module 620, configured to determine a search space of the control channel according to the frequency-time resource information and the first information obtained by the obtaining module 610; and a first receiving module 630, configured to receive the control channel in the search space determined by the determination module 620.
[00143] When using user equipment according to the modality of the present invention, the search space of the control channel can be determined according to the resource information of the frequency-time and the first information of the control channel, so that the receiving and sending of the control channel can be performed and a capacity of the control channel can be expanded, thereby increasing the efficiency and flexibility of system programming, and additionally increasing the user experience.
[00144] Optionally, as shown in Figure 10, user equipment 600 additionally includes: a second receiving module 640, configured to receive the first signal sent by a base station, in which the first signal includes the resource information of the frequency-time and the first information; and the obtaining module 610 is also configured to obtain the resource information of the frequency-time and the first information according to the first signal received by the second receiving module 640.
[00145] In the embodiment of the present invention, optionally, the first information obtained by the obtaining module 610 includes the configuration information of a reference signal specific to the UERS user equipment, and / or the information about the position of the search space, where the UERS configuration information is used to receive the control channel.
[00146] Optionally, as shown in Figure 11, determination module 620 includes: a first determination sub-module 621, configured to determine the search space according to the frequency-time resource information, a first mapping relationship between frequency-time resource information and a search space resource, and position information.
[00147] Optionally, as shown in Figure 11, the determination module 620 additionally includes: a second determination sub-module 622, configured to determine the search space that corresponds to the configuration information according to the resource information of the frequency- time, the first mapping relationship between the frequency-time resource information and the search space resource, and the configuration information.
[00148] In the embodiment of the present invention, optionally, as shown in Figure 12A, the first determination sub-module 621 includes: a first determination unit 625, configured to determine the search space resource according to the resource information of the frequency-time and the first mapping relationship; and a second determination unit 626, configured to determine, according to the position information, the search space in the search space resource determined by the first determination unit 625.
[00149] In the embodiment of the present invention, optionally, as shown in Figure 12B, the second determination sub-module 622 includes: a first determination unit 625, configured to determine the search space resource according to the resource information of the frequency-time and the first mapping relationship; and a third determination unit 627, configured to determine, in the search space resource determined by the first determination unit 625, where the search space corresponds to the configuration information according to a second mapping relationship between the configuration information and the search space, and / or the configuration information.
[00150] In the embodiment of the present invention, optionally, the first mapping relation or the second mapping relation used by the determination module 620 for the implementation is a mapping relation specific to the user equipment.
[00151] In the embodiment of the present invention, optionally, the determination module 620 is also configured to: determine the search space according to the resource information of the frequency-time and with the first information, in which at least one channel of control in the search space occupies a part of the resources of each RB in at least two blocks of resource RBs.
[00152] In the mode of the present invention, optionally, the determination module 620 is also configured to: determine the search space according to the frequency-time resource information and the first information, in which at least one channel of control in the search space occupies all or part of the resources of at least two RBs, and at least two RBs occupy a first time interval and a second time interval of a substructure.
[00153] In the embodiment of the present invention, optionally, the determination module 620 is also configured to: determine the search space according to the frequency-time resource information and the first information, where: when a number of sequence of an RB occupied by a first part of the resources of a first control channel in the search space is i, a sequence number of an RB occupied by a second part of the resources of the first control channel is N + i-NcaJM, where M is a natural number, Ncan is the number of control channels that correspond to an aggregation level and are included in the search space of the control channel and N is the number of RBs or RB pairs that correspond to the resource information of frequency-time, or N is equal to Ncan-
[00154] Optionally, if an aggregation level of a control channel is 1, the control channel will occupy a part of the resources in at least two RBs, with the resources of the RB being divided with frequency division and the part of the resources at least in the two that RBs are divided with time division, for example, each resource occupies two time intervals. Optionally, the RB intervals between the resource part at least in the two RBs are the same.
[00155] It should be understood that user equipment 600 in accordance with the modality of the present invention may correspond to user equipment EU in the methods for receiving and sending the control channel in accordance with the modalities of the present invention; in addition, the operations and / or functions above and other of the modules in user equipment 600 are used separately to perform the corresponding processes of the methods shown in Figure 2 in Figure 6, and are not repeated here for the purpose of brevity.
[00156] Therefore, when using user equipment according to the modality of the present invention, the search space of the control channel can be determined according to the resource information of the frequency-time and the first information of the control channel. control, so that the receiving and sending of the control channel can be performed and a capacity of the control channel can be expanded, thereby increasing the efficiency and flexibility of system programming and additionally increasing the user experience.
[00157] Figure 13 is a schematic block diagram of a base station 800 according to an embodiment of the present invention. As shown in Figure 13, base station 800 includes: an acquisition module 810, configured to obtain the frequency-time resource information and the first information from a control channel; a determination module 820, configured to determine a search space of the control channel according to the frequency-time resource information and the first information obtained by the obtaining module 810; and a first sending module 830, configured to send the control channel in the search space determined by the determination module 820 to a user device.
[00158] When using the base station according to the modality of the present invention, the search space of the control channel can be determined according to the resource information of the frequency-time and with the first information of the control channel, according to so that the receiving and sending of the control channel can be performed and a capacity of the control channel can be expanded, thereby increasing the efficiency and flexibility of system programming and additionally increasing the user experience.
[00159] In the embodiment of the present invention, optionally, as shown in Figure 14, the base station 800 additionally includes: a second sending module 840, configured to send the first signal to the user equipment, where the first signal includes the frequency-time resource information and the first information, so that the user equipment determines the search space of the control channel according to the frequency-time resource information and the first information.
[00160] In the embodiment of the present invention, optionally, the first information obtained by the obtaining module 810 includes the configuration information of a reference signal specific to the UERS user equipment, and / or the information about the position of the search space, where the UERS configuration information is used to send the control channel.
[00161] In the embodiment of the present invention, optionally, as shown in Figure 15, determination module 820 includes: a first determination sub-module 821, configured to determine the search space according to the frequency-time resource information , a first mapping relationship between the frequency-time resource information and a search space resource, and the position information.
[00162] Optionally, as shown in Figure 15, the determination module 820 additionally includes: a second determination sub-module 822, configured to determine the search space that corresponds to the configuration information according to the resource information of the frequency- time, the first mapping relationship between the frequency-time resource information and the search space resource, and the configuration information.
[00163] In the embodiment of the present invention, optionally, as shown in Figure 16A, the first determination sub-module 821 includes: a first determination unit 825, configured to determine the search space resource according to the resource information of the frequency-time and the first mapping relationship; and a second determination unit 826, configured to determine, according to the position information, the search space in the search space resource determined by the first determination unit 825.
[00164] In the embodiment of the present invention, optionally, as shown in Figure 16A, the second determination sub-module 822 includes: a first determination unit 825, configured to determine the search space resource according to the resource information of the frequency-time and the first mapping relationship; and a third determination unit 827, configured to determine, in the search space resource determined by the first determination unit 825, the search space that corresponds to the configuration information according to a second mapping relationship between the configuration information and the search space, and / or the configuration information.
[00165] Optionally, the base station 800 additionally includes: a third sending module, configured to send the second signaling to the user equipment, in which the second signaling includes the first mapping relation and / or the second mapping relation, according to how the user equipment determines the search space of the control channel.
[00166] Optionally, the determination module 820 is also configured to determine the search space of the control channel according to a third mapping relationship between the frequency-time resource information, the first information and the search space, the resource information of the frequency-time and the first information. In the embodiment of the present invention, optionally, the first mapping relation, the second mapping relation or the third mapping relation used by the determination module 820 for the implementation is a user equipment specific mapping relation.
[00167] In the embodiment of the present invention, optionally, the determination module 820 is also configured to: determine the search space according to the resource information of the frequency-time and the first information, in which at least one channel of control in the search space occupies a part of the resources of each RB in at least two blocks of resource RBs.
[00168] In the embodiment of the present invention, optionally, the determination module 820 is also configured to: determine the search space according to the frequency-time resource information and the first information, in which at least one channel of control in the search space occupies all or part of the resources of at least two RBs, and at least two RBs occupy a first time interval and a second time interval of a substructure.
[00169] In the embodiment of the present invention, optionally, the determination module 820 is also configured to: determine the search space according to the frequency-time resource information and the first information, where: when a number of sequence of an RB occupied by a first part of the resources of a first control channel in the search space is i, a sequence number of an RB occupied by a second part of the resources of the first control channel is N + i-NcaJM, where M is a natural number, Ncan is the number of control channels that correspond to an aggregation level and are included in the search space of the control channel and N is the number of RBs or RB pairs that correspond to the resource information of frequency-time, or N equals Ncan.
[00170] Optionally, if an aggregation level of a control channel is 1, the control channel will occupy a part of the resources in at least two RBs, with the resources of the RB being divided with frequency division and the part of the resources at least in the two that RBs are divided with time division, for example, each resource occupies two time intervals. Optionally, the RB intervals between the resource part at least in the two RBs are the same.
[00171] It should be understood that the base station 800 according to the modality of the present invention can correspond to the eNB of the base station in the methods for receiving and sending the control channel according to the modalities of the present invention; in addition, the above and / or operations and / or functions of the modules on the base station 800 are used separately to perform the corresponding processes of the methods shown in Figure 7 and Figure 8 and are not repeated here for the sake of brevity.
[00172] Therefore, when using the base station according to the modality of the present invention, the search space of the control channel can be determined according to the resource information of the frequency-time and with the first information of the control channel. , so that the receiving and sending of the control channel can be performed and a capacity of the control channel can be expanded, thereby increasing the efficiency and flexibility of system programming and additionally increasing the user experience.
[00173] An element skilled in the art may be aware that, in combination with the examples described in the modalities described in this specification, the units and steps of the algorithm can be performed by hardware, computer software or a combination of these. To clearly describe the interchangeability between hardware and software, what was mentioned above described in general the compositions and steps of each example, according to the functions. Whether the functions are performed by hardware or software, this will depend on the particular applications and the restrictive conditions of the technical solution design. One skilled in the art may use different methods to perform the functions described for each particular application, but the implementation should not be considered to be beyond the scope of the present invention.
[00174] An element versed in the technique can clearly understand, for the sake of brevity and convenience of describing a detailed operation process of the system, apparatus and unit above, that a reference can be made to a corresponding process in the above modalities of the method and the details will not be described here again.
[00175] In the various modalities provided in this application, it should be understood that the system, apparatus and method described can be performed in other ways. For example, the described modes of the apparatus are merely exemplary. For example, the division of the unit is merely a division of logical function, and may be another division in the actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some characteristics can be ignored or not implemented. In addition, mutual couplings displayed or discussed or direct couplings or communication connections can be performed using some interfaces. Indirect couplings or communication connections between the devices or the units can be performed electrically, mechanically or otherwise.
[00176] The units described as separate parts may be physically separate or not, and the parts displayed as units may be physical units or not, may be in one position or may be distributed to a plurality of units in the network. Some or all of the units can be selected to achieve the objective of solving the modality of the present invention according to the real needs.
[00177] In addition, functional units in the embodiments of the present invention can be integrated into a processing unit or each of the units can exist physically alone, or two or more units can be integrated into one unit. Integrated units can be run in the form of hardware or can be run in the form of a functional software unit.
[00178] When the integrated units are executed in the form of a functional software unit and are marketed or used as a stand-alone product, the integrated units can be stored on a storage medium that can be read by the computer. Based on such an understanding, the technical solutions of the present invention essentially or the part that contributes to the prior art, or all or a part of the technical solutions can be performed in the form of a software product. The computer software product is stored on storage media and includes several instructions for instructing a computer device (which may be a personal computer, a server or a network device) to perform all or part of the steps in the methods described in the modalities of the present invention. The storage media above includes any media that can store the program code, such as a USB flash drive, a removable hard drive, a read-only memory (Read Only Memory, ROM), a random access memory (Random Access Memory , RAM), a magnetic disk or an optical disk.
[00179] The above descriptions are merely specific embodiments of the present invention, but are not intended to limit the scope of protection of the present invention. Any equivalent modification or replacement readily envisioned by an element skilled in the art within the technical scope of the present invention will be found within the scope of protection of the present invention. Therefore, the scope of protection of the present invention is subject to the scope of protection of the claims.

权利要求:
Claims (8)
[0001]
1. Method for receiving a control channel, in a Long Term Evolution (LTE) system, characterized by the fact that it comprises the steps of: obtaining (S110), by a user equipment (UE) frequency resource information -time of the control channel and location information of a search space, in which the frequency-time resource information includes one or more RB pairs; determine (S120), by the user equipment, a control channel search space according to the frequency-time resource information and the location information, in which the search space includes multiple candidate control channels at one level aggregation, for an antenna port number, each pair of resource blocks (RB) in one part of RB pairs occupied by the search space includes a candidate control channel at the aggregation level, each pair of RB in the other part of the RB pairs occupied by the search space does not include a candidate control channel, the candidate control channel corresponds to the configuration information of a specific reference signal of the UE (UERS), the configuration information of a UERS includes the number of antenna port, and the aggregation level is greater than 1; and receive (S130), by the user equipment, the control channel in the search space.
[0002]
2. Method, according to claim 1, characterized by the fact that the determination (S120), by the user equipment, of a search space of the control channel according to the frequency-time resource information and information of location comprises: determining, by the user equipment, the search space according to the frequency-time resource information, a first mapping relationship between the frequency-time resource information and a search space resource, and the location information.
[0003]
3. Method for sending a control channel, in a Long Term Evolution (LTE) system, characterized by the fact that it comprises: obtaining (S310), by a base station, resource information of the frequency-time of the control channel and search space location information, where the frequency-time resource information includes one or more pairs of resource blocks (RB); determine (S320), by the base station, a search space for the control channel according to the frequency-time resource information and the location information, in which the search space includes multiple candidate control channels at one level. aggregation, for an antenna port number, each RB pair in a part of the RB pairs occupied by the search space includes a candidate control channel at the aggregation level, each RB pair in the other part of the RB pairs occupied by the search space search space does not include candidate control channel, the candidate control channel corresponds to the configuration information of a user equipment-specific reference signal (UERS), the configuration information for a UERS includes an antenna port number, and the level of aggregation is greater than 1; and send (S330), through the base station, to a user equipment of the control channel in the search space.
[0004]
4. Method, according to claim 3, characterized by the fact that the determination (S320), by the base station, of a search space of the control channel according to the frequency-time resource information and the information of location comprises: determining, by the base station, the search space according to the frequency-time resource information, a first mapping relationship between the frequency-time resource information and a search space resource, and location information.
[0005]
5. User equipment (UE) (600), in a Long Term Evolution (LTE) system, characterized by the fact that it comprises: a procurement module (610), configured to obtain frequency-time resource information a control channel and search space location information, where the frequency-time resource information includes one or more pairs of resource blocks (RB); a determination module (620), configured to determine a search space of the control channel according to the frequency-time resource information and the location information obtained by the obtaining module (610), in which the search space includes multiple candidate control channels at an aggregation level, for an antenna port number, each RB pair in a portion of RB pairs occupied by the search space includes a candidate control channel at the aggregation level, each pair of RB in the other part of the RB pairs occupied by the search space does not include a candidate control channel, a candidate control channel corresponds to the configuration information of a user equipment specific reference signal (UERS), the information of configuration of a UERS includes the antenna port number, and the aggregation level is greater than 1; and a first receiving module (630), configured to receive the control channel in the search space determined by the determination module (620).
[0006]
6. User equipment (UE) (600), in a Long Term Evolution (LTE) system, characterized by the fact that it comprises: a procurement module (610), configured to obtain frequency-time resource information a control channel and search space location information, where the frequency-time resource information includes one or more pairs of resource blocks (RB); a first determination sub-module (621), configured to determine a search space according to the frequency-time resource information, a first mapping relationship between the frequency-time resource information and a search space resource, and location information, where the search space includes multiple candidate control channels at an aggregation level, for an antenna port number, each RB pair in a portion of RB pairs occupied by the search space includes one candidate control channel at the aggregation level, each RB pair in the other part of the RB pairs occupied by the search space does not include a candidate control channel, the candidate control channel corresponds to the configuration information of a specific reference signal of user equipment (UERS), the configuration information for a UERS includes an antenna port number, and the aggregation level is greater than 1; and a first receiving module (630), configured to receive the control channel in the search space determined by the first determination sub-module (621).
[0007]
7. Base station (800), in a Long Term Evolution (LTE) system, characterized by the fact that it comprises: a procurement module (810), configured to obtain frequency-time resource information from a channel control and location information of a search space, in which the frequency-time resource information includes one or more pairs of resource blocks (RB); a determination module (820), configured to determine a search space of the control channel according to the frequency-time resource information and the location information obtained by the obtaining module (810), in which the search space includes multiple candidate control channels at an aggregation level, for an antenna port number, each RB pair in a portion of RB pairs occupied by the search space includes a candidate control channel at the aggregation level, each pair of RB in the other part of the RB pairs occupied by the search space does not include a candidate control channel, a candidate control channel corresponds to the configuration information of a user equipment specific reference signal (UERS), the information of A UERS configuration includes an antenna port number, and the aggregation level is greater than 1; and a first sending module (830), configured to send the control channel in the search space determined by the determination module (820) to a user device.
[0008]
8. Base station (800), in a Long Term Evolution (LTE) system, characterized by the fact that it comprises: a procurement module (810), configured to obtain frequency-time resource information from a control channel and search space location information, where the frequency-time resource information includes one or more pairs of resource blocks (RB); a first determination sub-module (821), configured to determine a search space according to the frequency-time resource information, a first mapping relationship between the frequency-time resource information and a search space resource, and location information, where the search space includes multiple candidate control channels at an aggregation level, for an antenna port number, each RB pair in a portion of RB pairs occupied by the search space includes one candidate control channel at the aggregation level, each RB pair in the other part of the RB pairs occupied by the search space does not include a candidate control channel, the candidate control channel corresponds to the configuration information of a specific reference signal of user equipment (UERS), the configuration information for a UERS includes an antenna port number, and the aggregation level is greater than 1; and a first sending module (830), configured to send to the user equipment the control channel in the search space determined by the first determination sub-module (821).

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