WO2022150979A1 - 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
WO2022150979A1
WO2022150979A1 PCT/CN2021/071313 CN2021071313W WO2022150979A1 WO 2022150979 A1 WO2022150979 A1 WO 2022150979A1 CN 2021071313 W CN2021071313 W CN 2021071313W WO 2022150979 A1 WO2022150979 A1 WO 2022150979A1
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WO
WIPO (PCT)
Prior art keywords
pdcch candidate
search space
pdcch
monitor
control resource
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Application number
PCT/CN2021/071313
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English (en)
Chinese (zh)
Inventor
黎添
生嘉
Original Assignee
捷开通讯(深圳)有限公司
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Priority to PCT/CN2021/071313 priority Critical patent/WO2022150979A1/fr
Priority to CN202180090434.3A priority patent/CN116762307A/zh
Publication of WO2022150979A1 publication Critical patent/WO2022150979A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

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; monitor the first PDCCH candidate according to the first search space set and the first control resource set and the second search space set and the second space resource set and the second PDCCH candidate; if there is at least one other PDCCH candidate overlapping with the second PDCCH candidate, determine the monitoring order of the second PDCCH candidate and the at least one other PDCCH candidate, wherein each of the other PDCCH candidates PDCCH candidates are determined by corresponding other sets of search spaces and other sets of control resources associated with them.
  • an exemplary communication device comprising: a processor, a memory, and a communication circuit, the memory storing instructions that, when executed by the processor, cause the processor to The transmission enhancement method as described above is performed by the communication circuit.
  • an exemplary non-volatile computer storage medium characterized by storing instructions that, when executed, implement the above-described transmission enhancement method.
  • the beneficial effects of the present application are: by monitoring the first PDCCH candidate and the second PDCCH candidate according to the first search space set and the first control resource set and the second search space set and the second space resource set, and at least one When the other PDCCH candidates overlap with the second PDCCH candidate, the monitoring sequence of the second PDCCH candidate and at least one other PDCCH candidate is determined, so as to avoid monitoring conflicts and realize enhanced PDCCH transmission.
  • 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 an embodiment of the present application.
  • FIG. 3 is a schematic diagram of overlapping PDCCH monitoring occasions applied in an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a non-volatile computer-readable storage medium according to an 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).
  • the PDCCH starting OFDM symbol, monitoring period, associated CORESET and other information 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 PDCCH candidate; the UE decodes the two separate PDCCH candidates.
  • PDCCH 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 a transmission enhancement method according to an embodiment of the present application.
  • the method can be applied to the PDCCH transmission enhancement scenario in the multi-TRP system of FIG. 1, and is executed by the UE, and 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 Monitor the first PDCCH candidate and the second PDCCH candidate according to the first search space set, the first control resource set, and the second search space set and the second space resource set.
  • the first PDCCH candidate is monitored according to the first search space set and the first control resource set
  • the second PDCCH candidate is monitored according to the second search space set and the second space resource set.
  • Step 230 If there is at least one other PDCCH candidate overlapping with the second PDCCH candidate, determine the monitoring order of the second PDCCH candidate and at least one other PDCCH candidate.
  • each other PDCCH candidate is determined by the corresponding other search space set and its associated other control resource set.
  • the overlapping of other PDCCH candidates and the second PDCCH candidate means that the other PDCCH candidates and the second PDCCH candidate overlap in the time domain, so that the monitoring timings of the other PDCCH candidates and the second PDCCH candidate overlap.
  • the monitoring sequence is determined according to its corresponding search space set and control resource set to avoid monitoring conflict.
  • the connection relationship between the first PDCCH candidate and the second PDCCH candidate for example, the starting CCE position, the PDCCH candidate index value, etc.
  • the second PDCCH candidate can be monitored according to the connection relationship. It should be noted that the connection relationship between the first PDCCH candidate and the second PDCCH candidate is not specifically limited here.
  • the first PDCCH candidate and the second PDCCH candidate are monitored according to the first search space set, the first control resource set, and the second search space set and the second space resource set, and at least one other PDCCH candidate is monitored.
  • the monitoring sequence of the second PDCCH candidate and at least one other PDCCH candidate is determined, so as to avoid monitoring conflict and realize enhanced PDCCH transmission.
  • the corresponding search space set of PDCCH candidate 3 and the corresponding control resource set of PDCCH candidate 2 (that is, the third control resource set and the second control resource set) and the corresponding search space set can be (that is, the third search space set and the second search space set), determine the monitoring order of PDCCH candidate 3 and PDCCH candidate 2.
  • step 230 includes:
  • a monitoring order of the second PDCCH candidate and at least one other PDCCH candidate is determined according to the second control resource set and the other control resource sets and the second search space set and the other search space sets.
  • the quasi-co-location type of the control resource set includes quasi-co-location type D (Quasi Co-Located TypeD, QCL-TypeD), that is, the quasi-co-location type of the TCI configured in the control resource set includes the quasi-co-location type D.
  • Quasi Co-Located Type D Quasi Co-Located Type D, QCL-Type D
  • Property is a quasi co-location property (Property) used to describe the airspace reception parameters of two ports.
  • the search space types include Common Search Space (CSS) and UE-specific Search Space (USS).
  • the common search space is mainly used to receive the PDCCH that schedules public messages, while the UE-specific search space is used to receive When scheduling the PDCCH of user data, it can be seen that from the PDCCH scheduling content, it is more important to monitor the PDCCH candidates belonging to the common search space.
  • step 230 the monitoring order of the second PDCCH candidate and at least one other PDCCH candidate is determined, including:
  • the monitoring order is determined according to at least one of a quasi-co-located type of the second control resource set and other control resource sets and a search space type of the second search space set and other search space sets.
  • the monitoring order is determined according to a quasi-co-location type of the second set of control resources and other sets of control resources and a search space type of the second set of search spaces and other sets of search spaces.
  • the monitoring sequence is to monitor the first search space set first. Monitor at least one other PDCCH candidate after two PDCCH candidates.
  • the monitoring sequence is to monitor the second PDCCH candidate and not monitoring at least one other PDCCH candidate, or monitoring one of the at least one other PDCCH candidate and not monitoring the second PDCCH candidate and the remaining PDCCH candidates of the at least one other PDCCH candidate.
  • the same quasi-co-location type D property means that the airspace reception parameters describing the two ports are the same.
  • the second control resource set and other control resource sets are configured with the same quasi-co-location type D property, if the second search space set and other search space sets belong to the same search space set, for example, the common search space or UE-specific search space space, indicating that the second PDCCH candidate and other PDCCH candidates are located in the same search space.
  • first monitor the second PDCCH candidate through the connection relationship between the first PDCCH candidate and the second PDCCH candidate, and then monitor the second PDCCH candidate.
  • Other PDCCH candidates are examples of the second PDCCH candidate.
  • the second control resource set and other control resource sets are configured with the same quasi-co-location type D property
  • the second search space set and other search space sets belong to different search space sets
  • the candidates are located in different search spaces.
  • the second PDCCH candidate is monitored and at least one other PDCCH candidate is not monitored, or one of the at least one other PDCCH candidate is monitored and the second PDCCH candidate and at least one other PDCCH candidate are not monitored. the remaining PDCCH candidates.
  • the remaining PDCCH candidates For example, in the example of FIG.
  • the second search space set and the third search space set are Belong to different search space sets, indicating that the second PDCCH candidate and the third PDCCH candidate are located in different search spaces.
  • the second PDCCH candidate is monitored and the third PDCCH candidate is not monitored, or the third PCDDH candidate is monitored and The second PDCCH candidate is not monitored.
  • the monitoring sequence is to monitor the second PDCCH candidate and not monitor at least one other PDCCH candidate.
  • the second search space set belongs to the common search space
  • the third search space set of the third PDCCH candidate belongs to the user equipment-specific search space, indicating that the second PDCCH candidate is located in the common search space
  • the third PDCCH candidate is located in the user equipment-specific search space.
  • the monitoring sequence is to monitor the second PDCCH candidate and not monitor the third PDCCH candidate. The connection relationship between the two, monitor the second PDCCH candidate, and then monitor the third PDCCH candidate.
  • the monitoring sequence is to monitor at least one of the at least one other PDCCH candidate, and not to monitor the second PDCCH candidate and at least one of the other PDCCH candidates. The remaining PDCCH candidates in one of the other PDCCH candidates.
  • the second search space set belongs to the user equipment-specific search space
  • the third search space set of the third PDCCH candidate belongs to the common search space, that is, the third PDCCH candidate is at least one of at least one of the other PDCCH candidates.
  • the monitoring sequence is to monitor the third PDCCH candidate and not monitor the second PDCCH candidate.
  • the search space set with the smallest index value in the public search space is monitored in the monitoring sequence.
  • At least one other PDCCH candidate overlaps with the second PDCCH candidate.
  • At least one of the other PDCCH candidates belongs to the common search space.
  • the third search space set of the third PDCCH belongs to the common search space, and the index value of the third search space set is the smallest index value in the common search space.
  • the third PDCCH candidate is monitored, the second PDCCH candidate is not monitored, and the remaining PDCCH candidates among at least one other PDCCH candidate are not monitored.
  • the monitoring order is determined according to the type of quasi-co-location of the second set of control resources with other sets of control resources.
  • the monitoring sequence is to monitor the second PDCCH candidate and not monitor at least one other PDCCH candidate .
  • the second PDCCH candidate is monitored through the connection relationship between the first PDCCH candidate and the second PDCCH candidate.
  • the monitoring sequence is to monitor PDCCH candidates configured with quasi-co-location type D and not monitor the PDCCH candidates that are configured with quasi-co-location type D.
  • PDCCH candidates of quasi-co-location type D are configured.
  • the monitoring sequence is to monitor the second PDCCH candidate, and not monitor other PDCCH candidates, such as the first PDCCH candidate.
  • the monitoring sequence is to monitor the third PDCCH candidate, The second PDCCH candidate and other PDCCH candidates not configured with quasi-colocation type D are not monitored.
  • the monitoring of the second PDCCH candidate is implemented through the connection relationship between the first PDCCH candidate and the second PDCCH candidate.
  • the monitoring sequence is to monitor the second PDCCH candidate first and then monitor the other PDCCH candidates.
  • Neither the second control resource set nor other control resource sets are configured with quasi-co-location type D.
  • the other search space sets corresponding to other PDCCH candidates overlapping with the second PDCCH candidate belong to the common search space or the UE-specific search space , that is, regardless of whether other PDCCH candidates are located in the common search space or the UE-specific search space, first monitor the second PDCCH candidate through the connection relationship between the first PDCCH candidate and the second PDCCH candidate, and then monitor the connection between the second PDCCH candidate and the second PDCCH candidate.
  • other PDCCH candidates with overlapping PDCCH candidates are configured with quasi-co-location type D.
  • 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, and the monitoring timing of PDCCH candidate 3 is the same as the PDCCH candidate 2 Overlap, ie the third PDCCH candidate overlaps with the second PDCCH candidate.
  • step 230 includes: directly determining the monitoring order of the second PDCCH candidate and the at least one other PDCCH candidate, monitoring the second PDCCH candidate first and then monitoring the at least one other PDCCH candidate.
  • the second PDCCH candidate is preferentially monitored, thereby ensuring the decoding performance of the second PDCCH candidate.
  • the communication device 400 includes a memory 410 , a processor 420 , and a communication circuit 430 .
  • the memory 410 and the communication circuit 430 are respectively connected to the processor 420 .
  • Memory 410 may include read-only memory and/or random access memory, among others, and provides instructions and data to processor 420 . A portion of memory 410 may also include non-volatile random access memory (NVRAM). Memory 410 stores instructions.
  • NVRAM non-volatile random access memory
  • the communication circuit 430 is used for sending and receiving data, and is an interface for the communication device 400 to communicate with other communication devices.
  • the processor 420 controls the operation of the communication device, and the processor 420 may also be referred to as a CPU (Central Processing Unit, central processing unit).
  • the processor 420 may be an integrated circuit chip with signal processing capability.
  • Processor 420 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 420 is configured to execute the instructions to implement the method provided by any one of the embodiments 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.
  • FIG. 5 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 500 internally stores an instruction 501, and when the instruction 501 is executed, the following The method provided by any one of the above-mentioned embodiments of the transmission enhancement method of the present application and any non-conflicting combination.
  • the non-volatile computer-readable storage medium 500 may be a portable storage medium such as a USB flash drive or an optical disk, or may be a user equipment or an independent component that can be integrated into the user equipment, such as a baseband board and the like.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande concerne un procédé d'amélioration de transmission consistant à : recevoir une transmission PDCCH, un premier ensemble d'espaces de recherche et son premier ensemble de ressources de commande associé, ainsi qu'un second ensemble d'espaces de recherche et son second ensemble de ressources de commande associé étant configurés pour la transmission PDCCH ; surveiller un premier PDCCH candidat et un second PDCCH candidat en fonction du premier ensemble d'espaces de recherche et du premier ensemble de ressources de commande, ainsi que du second ensemble d'espaces de recherche et du second ensemble de ressources de commande ; et s'il existe au moins un autre PDCCH candidat chevauchant le second PDCCH candidat, déterminer l'ordre de surveillance du second PDCCH candidat et de l'autre ou des autres PDCCH candidats, chacun des autres PDCCH candidats étant déterminé par un autre ensemble d'espaces de recherche correspondant et son autre ensemble de ressources de commande associé. La présente demande concerne également un dispositif de communication correspondant. Selon le procédé, la présente demande peut empêcher des collisions de surveillance et améliorer la transmission PDCCH.
PCT/CN2021/071313 2021-01-12 2021-01-12 Procédé d'amélioration de transmission et dispositif de communication WO2022150979A1 (fr)

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PCT/CN2021/071313 WO2022150979A1 (fr) 2021-01-12 2021-01-12 Procédé d'amélioration de transmission et dispositif de communication
CN202180090434.3A CN116762307A (zh) 2021-01-12 2021-01-12 一种传输增强方法及通信设备

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109660315A (zh) * 2017-10-10 2019-04-19 北京展讯高科通信技术有限公司 基于dmrs的pdcch盲检方法及装置、存储介质、用户设备
WO2019192018A1 (fr) * 2018-04-06 2019-10-10 Zte Corporation Procédé et système de sélection de canal de commande de liaison descendante physique candidat
CN110876204A (zh) * 2018-08-31 2020-03-10 中国信息通信研究院 一种移动通信系统、网络设备、终端设备和数据调度方法
CN111435897A (zh) * 2019-01-11 2020-07-21 华为技术有限公司 信息传输的方法和通信装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109660315A (zh) * 2017-10-10 2019-04-19 北京展讯高科通信技术有限公司 基于dmrs的pdcch盲检方法及装置、存储介质、用户设备
WO2019192018A1 (fr) * 2018-04-06 2019-10-10 Zte Corporation Procédé et système de sélection de canal de commande de liaison descendante physique candidat
CN110876204A (zh) * 2018-08-31 2020-03-10 中国信息通信研究院 一种移动通信系统、网络设备、终端设备和数据调度方法
CN111435897A (zh) * 2019-01-11 2020-07-21 华为技术有限公司 信息传输的方法和通信装置

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