WO2022150981A1 - Procédé d'amélioration de transmission, et dispositif de communication - Google Patents

Procédé d'amélioration de transmission, et dispositif de communication Download PDF

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Publication number
WO2022150981A1
WO2022150981A1 PCT/CN2021/071315 CN2021071315W WO2022150981A1 WO 2022150981 A1 WO2022150981 A1 WO 2022150981A1 CN 2021071315 W CN2021071315 W CN 2021071315W WO 2022150981 A1 WO2022150981 A1 WO 2022150981A1
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Prior art keywords
search space
pdcch candidate
pdcch
quasi
control resource
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PCT/CN2021/071315
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English (en)
Chinese (zh)
Inventor
黎添
生嘉
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捷开通讯(深圳)有限公司
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Priority to PCT/CN2021/071315 priority Critical patent/WO2022150981A1/fr
Priority to CN202180089197.9A priority patent/CN116636287B/zh
Publication of WO2022150981A1 publication Critical patent/WO2022150981A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the disclosed embodiments of the present application relate to the field of communication technologies, and more particularly, to a transmission enhancement method and a communication device.
  • the PDCCH channel may be blocked from the transmission/reception point (TRP) to the user equipment (User Equipment, UE), in order to give full play to the multi-TRP (The advantages of Multiple-TRP) system need to enhance the reliability of PDCCH.
  • TRP transmission/reception point
  • UE User Equipment
  • the present application proposes a transmission enhancement method and a communication device to solve the above problems.
  • an exemplary transmission enhancement method comprising: receiving a PDCCH transmission, wherein the PDCCH transmission is configured with a first set of search spaces and its associated first set of control resources and a second search space set and its associated second control resource set; according to the first search space set and the first control resource set, determine and decode the first PDCCH candidate to obtain the first PDCCH candidate and the Connection relationship information between the second PDCCH candidates; obtain the second search space set according to the indication information, wherein the indication information is used to indicate the second search space set; according to the second search space set , the second space resource set and the connection relationship information, and monitor and decode the second PDCCH candidate.
  • an exemplary transmission enhancement method comprising: performing a PDCCH transmission, wherein the PDCCH transmission is configured with a first set of search spaces and its associated first set of control resources and a second search A space set and its associated second set of control resources, the second set of search spaces indicated by the indication information.
  • an exemplary user equipment which is characterized in that, when applied to a multi-TRP system, it includes: a processor, a memory, and a communication circuit, where the memory stores instructions, the instructions are When the processor executes, the processor is caused to execute the method according to the first aspect above through the communication circuit.
  • an exemplary base station applying a multi-TRP system, comprising: a processor, a memory, and a communication circuit, the memory storing instructions that, when executed by the processor, cause The processor performs the method as described in the second aspect above through the communication circuit.
  • an exemplary non-volatile computer storage medium is disclosed, characterized in that it stores instructions that, when executed, implement the method described in the first aspect.
  • an exemplary non-volatile computer storage medium is disclosed, characterized in that it stores instructions that, when executed, implement the method described in the second aspect above.
  • the beneficial effects of the present application are as follows: by decoding the first PDCCH candidate according to the first search space set and the first control resource set, the connection relationship information between the first PDCCH candidate and the second PDCCH candidate is obtained, and through the indication information , to obtain the second search space set, so that the second PDCCH candidate is monitored and decoded according to the second search space set, the second space resource set and the connection relationship information, so as to realize PDCCH transmission enhancement.
  • FIG. 1 is a schematic diagram of a multi-TRP system to which an embodiment of the present application is applied.
  • FIG. 2 is a flowchart of a transmission enhancement method according to the first embodiment of the present application.
  • FIG. 3 is a flowchart of a transmission enhancement method according to a second embodiment of the present application.
  • FIG. 4 is a schematic diagram of overlapping PDCCH monitoring occasions applied in an embodiment of the present application.
  • FIG. 5 is a flowchart of a transmission enhancement method according to a third embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a communication device according to the first embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a communication device according to a second embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a non-volatile computer-readable storage medium according to the first embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a non-volatile computer-readable storage medium according to a second embodiment of the present application.
  • the UE needs to know the location of the Physical Downlink Control Channel (PDCCH) in the frequency domain and the location in the time domain to successfully decode the PDCCH.
  • the frequency domain resource information of the PDCCH and the number of orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols occupied in the time domain are encapsulated in the control resource set (Control Resource Set, CORESET).
  • Information such as the starting OFDM symbol of the PDCCH, the listening period, and the associated control resource set are encapsulated in a search space (Search Space).
  • PDCCH candidates PDCCH candidates
  • the UE performs Polar decoding and Cyclic Redundancy Check (CRC) on each PDCCH candidate, and when the CRC passes, it means that the current PDCCH candidate is successfully decoded.
  • CRC Cyclic Redundancy Check
  • multiple PDCCHs are transmitted from multiple TRPs to one UE.
  • These PDCCHs are transmitted using different beams and indicate the same resource allocation information for scheduling a physical downlink shared channel (Physical Downlink). Share Channel, PDSCH)/Physical Uplink Share Channel (PUSCH), etc.
  • PDSCH Physical Downlink shared channel
  • PUSCH Physical Uplink Share Channel
  • TCI Transmission Configuration Indication
  • SS set Search Space Set
  • the UE does not decode the two separate PDCCH candidates, but only decodes the combined candidate; the UE decodes the two separate PDCCH candidates. candidate; the UE decodes the first PDCCH candidate and the combined PDCCH candidate; and the UE decodes the two PDCCH candidates individually first, and then decodes the combined PDCCH candidate.
  • FIG. 2 it is a flowchart of the transmission enhancement method according to the first embodiment of the present application.
  • the method can be applied to the enhanced scenario of PDCCH transmission in the multi-TRP system of FIG. 1, and is performed by the UE.
  • the method includes:
  • Step 210 Receive a PDCCH transmission.
  • the PDCCH transmission is configured with a first search space set and its associated first control resource set and a second search space set and its associated second control resource set.
  • Step 220 Determine and decode the first PDCCH candidate according to the first search space set and the first control resource set to obtain connection relationship information between the first PDCCH candidate and the second PDCCH candidate.
  • connection relationship information between the first PDCCH candidate and the second PDCCH candidate is the position of the starting control channel element (Control Channel Element, CCE), the PDCCH candidate index value, and the like.
  • Step 230 Obtain a second search space set according to the indication information, where the indication information is used to indicate the second search space set.
  • the indication message may be related to the first search space set of the first PDCCH candidate, or may be related to the first PDCCH candidate.
  • Step 240 Monitor and decode the second PDCCH candidate according to the second search space set, the second space resource set, and the connection relationship information.
  • PDCCH candidate for example, its starting CCE position, and the PDCCH candidate index value.
  • the connection relationship information between the first PDCCH candidate and the second PDCCH candidate is obtained, and the indication information is used to obtain The second search space set, so that the second PDCCH candidate is monitored and decoded according to the second search space set, the second space resource set and the connection relationship information, so as to realize PDCCH transmission enhancement.
  • the indication information is used to indicate the second search space set, and according to the indication information, the second search space set can be obtained.
  • both the first set of search spaces and the second set of search spaces are available, and the first set of search spaces and the second set of search spaces and the indication information are configured by higher layer signaling.
  • High-level signaling is Radio Resource Control (RRC).
  • RRC Radio Resource Control
  • the available first search space set and second search space set are configured through the high layer parameter searchSpacesToAddModList contained in the high layer parameter PDCCH-Config. That is, the number of search space sets configured through higher layer signaling is 2.
  • the configuration information of the second search space set is obtained from the high-level search space set configuration information, that is, the UE can directly obtain the configuration information of the second search space set from the high-level search space set configuration information.
  • step 230 includes: acquiring the configuration information of the second search space set from the search space configuration information of the upper layer, so as to obtain the second search space set.
  • the configuration information of the second search space set is obtained from the search space configuration information of the high layer, that is, configured by the high layer signaling, and at this time, the search space set configuration information of the high layer can be regarded as indication information.
  • the UE directly obtains the configuration information of the second search space set from the search space configuration information of the upper layer, and then monitors and decodes the second PDCCH candidate in combination with the connection relationship information between the first PDCCH candidate and the second PDCCH candidate.
  • the indication information indicates that the index value of the second search space set is indicated by a parameter newly added in the high-level parameter SearchSpace of the first search space set, that is, the indication information is related to the first search space set.
  • step 230 includes: obtaining an index value of the second search space set from a parameter newly added in the high-level parameter SearchSpace of the first search space set, thereby obtaining the second search space set.
  • a parameter newly added to the high-level parameter SearchSpace of the first search space set is used to indicate the index value of the search space set associated with it, and the search space set index value is used to indicate the index of the second search space set value.
  • the UE can obtain the second search space set, and then combines the connection relationship information between the first PDCCH candidate and the second PDCCH candidate to monitor and monitor Decode the second PDCCH candidate.
  • the indication information is indicated by the downlink control information carried by the first PDCCH candidate, that is, the indication information is related to the first PDCCH candidate. Specifically, in some examples, the indication information indicates that the index value of the second search space set is indicated by the carrying information in the downlink control information carried by the first PDCCH candidate.
  • the carrying information may be a newly added parameter in the downlink control information.
  • step 230 includes: obtaining the index value of the second search space set according to the carrying information in the downlink control information carried by the first PDCCH candidate, so as to obtain the second search space set.
  • a newly added parameter in the DCI carried by the first PDCCH candidate is used to indicate the search space set index value associated with it, and the search space set index value is used to indicate the index value of the second search space set .
  • the UE decodes the first PDCCH candidate in the first search space set and the associated first control resource set, and then obtains the index value of the second search space set through the index value of the associated search space set in the DCI, that is, A second search space set is obtained, and the second PDCCH candidate is monitored and decoded in combination with the connection relationship information between the first PDCCH candidate and the second PDCCH candidate.
  • the connection relationship information between the first PDCCH candidate and the second PDCCH candidate is obtained according to the first PDCCH candidate. It can be seen that by obtaining the connection relationship information between the first PDCCH candidate and the second PDCCH candidate according to the first PDCCH candidate, it is solved that the current connection relationship information between the first PDCCH candidate and the second PDCCH candidate is not specific. The problem of the indication method is to realize the indication of the connection relationship between the first PDCCH candidate and the second PDCCH candidate.
  • the UE after decoding the first PDCCH candidate according to the first search space set and its associated first control resource set, the UE stores relevant information of the first PDCCH candidate, for example, the starting CCE position, the PDCCH candidate index The value, etc., is used as the association information of the second PDCCH candidate, that is, the connection relationship information between the first PDCCH candidate and the second PDCCH candidate, and is used to decode the second PDCCH candidate.
  • FIG. 3 it is a flowchart of a transmission enhancement method according to a third embodiment of the present application.
  • the method can be applied to the enhanced scenario of PDCCH transmission in the multi-TRP system of FIG. 1, and is executed by the UE.
  • the method includes:
  • Step 310 If the monitoring timings of the second PDCCH candidate and the first PDCCH candidate overlap, simultaneously monitor the second PDCCH candidate and the first PDCCH candidate, wherein the second control resource set of the second PDCCH candidate is the same as that of the first PDCCH candidate.
  • the first control resource sets of the PDCCH candidates are configured with different quasi-co-location type D properties.
  • the quasi-co-located type of the control resource set includes quasi-co-located type D (Quasi Co-Located TypeD, QCL-TypeD).
  • Quasi Co-Located Type D Quasi Co-Located Type D, QCL-Type D
  • Property a quasi co-location property used to describe the airspace reception parameters of two ports.
  • the second control resource set and the first control resource set are respectively configured with TCI, the quasi-co-location type of the two TCI configurations is quasi-co-location type D, and the second control resource set of the second PDCCH candidate is the same as that of the first PDCCH.
  • the candidate first control resource set is configured with different quasi-co-location type D properties, that is, the quasi-co-location type D properties of the two TCI configurations are different.
  • the UE can monitor the second PDCCH candidate and the first PDCCH at the same time. candidate.
  • the two PDCCH candidates may be in overlapping PDCCH monitoring occasions (Monitoring Occasion), namely
  • the UE supports simultaneous monitoring of two PDCCH candidates with different quasi-co-location type D properties, which solves the problem that the UE will not be able to monitor the current PDCCH monitoring timing due to the overlapping PDCCH monitoring timing.
  • PDCCH candidate 1 and PDCCH candidate 2 are two PDCCH candidates with a connection relationship, namely the first PDCCH candidate and the second PDCCH candidate, when the PDCCH repetition scheme adopts intra-slot repetition, or when the two When the PDCCH candidates are frequency division multiplexed/space division multiplexed, the monitoring timings of the two PDCCH candidates overlap.
  • the two control resource sets corresponding to the two PDCCH candidates in FIG. 3 are respectively configured with different TCIs, that is, the first control resource set and the second control resource set are configured with different TCIs, and the two TCIs are configured with different TCIs.
  • the quasi-co-location type is quasi-co-location type D
  • the airspace receiving parameters used to monitor PDCCH candidate 1 and PDCCH candidate 2 are different, that is, the quasi-co-location type D has different properties.
  • the UE can monitor the two PDCCH candidates at the same time, that is, the UE supports the simultaneous monitoring of two PDCCH candidates with different quasi-co-location types D, and solves the problem of multiple overlapping PDCCH monitoring occasions.
  • the same problem of PDCCH with quasi-co-located type D properties is applicable to enhancing the reliability of PDCCH in a multi-TRP system.
  • the UE in the case where the monitoring timings of the second PDCCH candidate and the first PDCCH candidate overlap, the UE simultaneously monitors the second PDCCH candidate and The first PDCCH candidate solves the problem that the UE only monitors PDCCHs with the same quasi-co-location type D property in the case of multiple overlapping PDCCH monitoring occasions, and is suitable for enhancing PDCCH reliability in multi-TRP systems.
  • the quasi-co-location types indicated in the transmission configuration indication states of the first control resource set and the second control resource set are all quasi-co-location types D, and the indicated source reference signal types are different.
  • the PDCCH receiving beam uses the TCI state for notification.
  • Each TCI state indicates a source reference signal that is quasi-co-located in the space of the signal to be received. If the quasi-co-location type in the TCI state is quasi-co-location type D, that is, the quasi-co-location under the spatial reception parameters , the demodulation reference signal (Demodulation Reference Signal, DM-RS) of the PDCCH is quasi-co-located with the source reference signal, and the same beam as the source reference signal can be used to receive the PDCCH.
  • DM-RS Demodulation Reference Signal
  • the source reference signal type under the quasi-co-location type D of the DMRS of the PDCCH it can be SSB (marked as source reference signal 1), and the CSI- RS resource (marked as source reference signal 2), CSI-RS resource (marked as source reference signal 3) under the high-level parameter NZP-CSI-RS-ResourceSet configured with high-level parameter repetition, and without high-level parameters trs-Info and repetition
  • the CSI-RS resource (marked as source reference signal 4) under the higher layer parameter NZP-CSI-RS-ResourceSet.
  • the indicated source reference signal types are not the same, that is, the source reference signal types indicated in the TCI state are two of the source reference signals 1-4. For example, if the source reference signal indicated by the TCI state of the first control resource set is source reference signal 2, then the source reference signal indicated by the TCI state of the second control resource set is source reference signal 1, 3 or 4.
  • the source reference signal types indicated in the transmission configuration indication states of the first control resource set and the second control resource set are different, and the directions of the indicated receive beams are the same or different.
  • the direction of the receiving beam can be defined by the angle of arrival and the average angle of arrival.
  • the angle of arrival can be further divided into a horizontal angle of arrival and a vertical angle of arrival.
  • the first control resource set and the second control resource set are configured with different quasi-co-location type D properties, if the source reference signal types indicated in the transmission configuration indication states of the first control resource set and the second control resource set are different If the same, the directions of the indicated receive beams are the same or different, eg, the angle of arrival of the receive beams is different from at least one of the average angles of arrival.
  • the source reference signal types indicated in the transmission configuration indication states of the first control resource set and the second control resource set are the same, and the indicated reference signals have different spatial reception parameters.
  • the UE can simultaneously receive multiple beams with multiple panels, then two panels can be used to receive PDCCH candidates with different beam directions, the two PDCCH candidates are configured by the corresponding control resource sets, and the two control resource sets Configurations have different quasi-co-location type D properties.
  • the two control resource sets Configurations have different quasi-co-location type D properties.
  • the user equipment uses the first panel and the second panel to receive PDCCH transmission.
  • the first quasi-co-location type D configuration is configured on the first panel of the UE
  • the second quasi-co-location type D configuration is configured on the second panel
  • the two quasi-co-location type D configurations are different, and these two configurations are simultaneously used to receive PDCCH transmission.
  • FIG. 5 it is a flowchart of a transmission enhancement method according to an embodiment of the present application.
  • the method can be applied to the enhanced PDCCH transmission scenario in the multi-TRP system in FIG. 1 , and is performed by the base station, for example, the base station communicates with the UE through TRP1 and TRP2 in FIG. 1 .
  • the method includes:
  • Step 510 Perform PDCCH transmission, wherein the PDCCH transmission is configured with a first set of search spaces and its associated first set of control resources and a second set of search spaces and its associated second set of control resources, the second set of search spaces being indicated by information indication.
  • the indication information is used to indicate the second search space set.
  • the indication message may be related to the first search space set of the first PDCCH candidate, or may be related to the first PDCCH candidate.
  • the relevant content has been described in detail in the above-mentioned embodiments, and is not described here for brevity.
  • the second search space set is indicated by the indication information, so that the second PDCCH candidate can be monitored and decoded, and the PDCCH transmission enhancement can be realized.
  • both the first set of search spaces and the second set of search spaces are available, and the first set of search spaces and the second set of search spaces and the indication information are configured by higher layer signaling.
  • the configuration information of the second set of search spaces is obtained from high-level search space configuration information.
  • the indication information indicates that the index value of the second search space set is indicated by a newly added parameter in the high-level parameter SearchSpace of the first search space set.
  • the indication information is indicated by downlink control information carried by the first PDCCH candidate determined and decoded according to the first set of search spaces and the first set of control resources.
  • the indication information indicates that the index value of the second search space set is indicated by carrying information in the downlink control information carried by the first PDCCH candidate.
  • the second set of control resources and the first set of control resources are configured with different quasi-co-location type D properties.
  • the quasi-co-location types indicated in the transmission configuration indication states of the first control resource set and the second control resource set are all quasi-co-location types D, and the indicated source reference signal types are different.
  • the source reference signal types indicated in the transmission configuration indication states of the first control resource set and the second control resource set are different, and the directions of the indicated receive beams are the same or different.
  • the source reference signal types indicated in the transmission configuration indication states of the first control resource set and the second control resource set are the same, and the indicated reference signals have different spatial reception parameters.
  • the first quasi-co-location type D configuration is configured on the first panel
  • the second quasi-co-location type D configuration is configured on the second panel
  • the second quasi-co-location type D configuration is configured on the second panel.
  • a quasi-co-location type D configuration is different from a second quasi-co-location type D configuration.
  • the communication device 600 includes a memory 610 , a processor 620 , and a communication circuit 630 , and the memory 610 and the communication circuit 630 are respectively connected to the processor 620 .
  • Memory 610 may include read-only memory and/or random access memory, among others, and provide instructions and data to processor 620 . A portion of memory 610 may also include non-volatile random access memory (NVRAM). Memory 610 stores instructions.
  • NVRAM non-volatile random access memory
  • the communication circuit 630 is used for sending and receiving data, and is an interface for the communication device 600 to communicate with other communication devices.
  • the processor 620 controls the operation of the communication device, and the processor 620 may also be referred to as a CPU (Central Processing Unit, central processing unit).
  • the processor 620 may be an integrated circuit chip with signal processing capability.
  • Processor 620 may also be a general purpose processor, digital signal processor (DSP), application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components .
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the processor 620 is configured to execute the instructions to implement the method provided by any one of the first embodiment to the second embodiment of the transmission enhancement method of the present application and any non-conflicting combination.
  • the communication device in this embodiment may be user equipment, or may be an independent component that can be integrated in the user equipment, such as a baseband board.
  • the communication device 700 includes a memory 710 , a processor 720 , and a communication circuit 730 .
  • the memory 710 and the communication circuit 730 are respectively connected to the processor 720 .
  • Memory 710 may include read-only memory and/or random access memory, among others, and provide instructions and data to processor 720 . A portion of memory 710 may also include non-volatile random access memory (NVRAM). Memory 710 stores instructions.
  • NVRAM non-volatile random access memory
  • the communication circuit 730 is used for sending and receiving data, and is an interface for the communication device 700 to communicate with other communication devices.
  • the processor 720 controls the operation of the communication device, and the processor 720 may also be referred to as a CPU (Central Processing Unit, central processing unit).
  • the processor 720 may be an integrated circuit chip with signal processing capability.
  • Processor 720 may also be a general purpose processor, digital signal processor (DSP), application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components .
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the processor 720 is configured to execute the instructions to implement any one of the third embodiments of the transmission enhancement method of the present application and the method provided by any non-conflicting combination.
  • the communication device in this embodiment may be a base station, or may be an independent component that can be integrated in the base station, such as a baseband board.
  • FIG. 8 which is a schematic structural diagram of a non-volatile computer-readable storage medium according to an embodiment of the present application
  • the non-volatile computer-readable storage medium 800 internally stores an instruction 801, and when the instruction 801 is executed, the following
  • the transmission enhancement method of the present application is provided by any one of the above-mentioned first and second embodiments and any non-conflicting combination.
  • the non-volatile computer-readable storage medium 800 may be a portable storage medium such as a U disk or an optical disk, or a base station or an independent component that can be integrated in the base station, such as a baseband board.
  • the non-volatile computer-readable storage medium 900 internally stores an instruction 901, and when the instruction 901 is executed, the following
  • the transmission enhancement method of the present application is provided by any one of the above-mentioned third embodiments and any non-conflicting combination.
  • the non-volatile computer-readable storage medium 900 may be a portable storage medium such as a U disk or an optical disk, or a base station or an independent component that can be integrated in the base station, such as a baseband board.

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Abstract

La présente invention concerne un procédé d'amélioration de transmission, qui consiste à : recevoir une transmission PDCCH, la transmission PDCCH étant configurée avec un premier ensemble d'espaces de recherche et un premier ensemble de ressources de commande associées à celui-ci, et un second ensemble d'espaces de recherche et un second ensemble de ressources de commande associées à celui-ci ; déterminer un premier PDCCH candidat selon le premier ensemble d'espaces de recherche et le premier ensemble de ressources de commande, et décoder celui-ci afin d'obtenir des informations de relation de connexion entre le premier PDCCH candidat et un second PDCCH candidat ; obtenir le second ensemble d'espaces de recherche selon des informations d'indication, les informations d'indication servant à indiquer le second ensemble d'espaces de recherche ; et surveiller et décoder le second PDCCH candidat selon le second ensemble d'espaces de recherche, le second ensemble de ressources spatiales et les informations de relation de connexion. La présente invention concerne en outre un dispositif de communication correspondant. Le procédé décrit permet de mettre en oeuvre une amélioration de transmission de PDCCH.
PCT/CN2021/071315 2021-01-12 2021-01-12 Procédé d'amélioration de transmission, et dispositif de communication WO2022150981A1 (fr)

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CN202180089197.9A CN116636287B (zh) 2021-01-12 2021-01-12 一种传输增强方法及通信设备

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CN111566976A (zh) * 2018-01-12 2020-08-21 高通股份有限公司 利用重叠资源的物理下行链路控制信道（pdcch）监视
CN110324127A (zh) * 2018-03-30 2019-10-11 维沃移动通信有限公司 Pdcch监听候选的分配方法和网络侧设备

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