WO2021163902A1 - Appareil et procédé de transmission - Google Patents

Appareil et procédé de transmission Download PDF

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Publication number
WO2021163902A1
WO2021163902A1 PCT/CN2020/075775 CN2020075775W WO2021163902A1 WO 2021163902 A1 WO2021163902 A1 WO 2021163902A1 CN 2020075775 W CN2020075775 W CN 2020075775W WO 2021163902 A1 WO2021163902 A1 WO 2021163902A1
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WIPO (PCT)
Prior art keywords
identifier
pdcch
coreset
pdcchs
search space
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PCT/CN2020/075775
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English (en)
Chinese (zh)
Inventor
方昀
陈文洪
史志华
黄莹沛
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Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2020/075775 priority Critical patent/WO2021163902A1/fr
Priority to CN202080084289.3A priority patent/CN114762423A/zh
Publication of WO2021163902A1 publication Critical patent/WO2021163902A1/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

  • This application relates to communication technology, and in particular to a transmission method and device.
  • the coverage enhancement can be effectively improved by repeating the channel transmission.
  • the repeated transmission of the physical downlink shared channel (PDSCH) based on the multi-transmission and reception point (Multi-TRP) is performed by only one physical downlink control channel (physical downlink control). channel, PDCCH) for scheduling.
  • the PDCCH corresponds to only one high-level configuration (CORSET Pool Index).
  • CORSET Pool Index the high-level configuration
  • the HARQ codebook (codebook) for hybrid automatic repeat request (HARQ) feedback is generated according to the control resource set (CORESET) where the PDCCH is located.
  • the PDCCH can be repeatedly transmitted by multiple CORESETs of different CORSET Pool Indexes. At this time, the PDSCH cannot determine which CORSET Pool Index CORESET should be used to generate HARQ codebook during feedback.
  • the embodiments of the present application provide a transmission method and device to avoid the problem that the PDSCH cannot determine which CORSET Pool Index CORESET should be used to generate the HARQ codebook during feedback.
  • an embodiment of the present application provides a transmission method, including:
  • the second identifier is the identifier of the higher layer configuration corresponding to the HARQ codebook
  • the HARQ codebook is the identifier corresponding to the downlink control information
  • an embodiment of the present application provides a transmission method, including:
  • the second identifier is the identifier of the higher layer configuration corresponding to the HARQ codebook
  • the HARQ codebook is the identifier corresponding to the downlink control information
  • an embodiment of the present application provides a transmission device, including:
  • the determining module is configured to determine the second identifier according to the first identifier used to indicate the resource of the downlink control information, where the second identifier is the identifier of the higher layer configuration corresponding to the HARQ codebook, and the HARQ codebook is the The codebook used for the HARQ feedback of the PDSCH corresponding to the downlink control information.
  • an embodiment of the present application provides a transmission device, including:
  • the determining module is configured to determine the second identifier according to the first identifier used to indicate the resource of the downlink control information, where the second identifier is the identifier of the higher layer configuration corresponding to the HARQ codebook, and the HARQ codebook is the The codebook used for the HARQ feedback of the PDSCH corresponding to the downlink control information.
  • an embodiment of the present application provides a terminal device, including: a transceiver, a processor, and a memory;
  • the memory stores computer execution instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor executes the transmission method according to any one of claims 1 to 17.
  • an embodiment of the present application provides a network device, including: a transceiver, a processor, and a memory;
  • the memory stores computer execution instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor executes the transmission method according to any one of claims 18 to 34.
  • an embodiment of the present application provides a computer-readable storage medium, and the computer-readable storage medium stores computer-executable instructions.
  • the computer-executable instructions are executed by a processor, they are used to implement 31 The transmission method described in any one.
  • an embodiment of the present application provides a computer-readable storage medium having computer-executable instructions stored in the computer-readable storage medium.
  • the computer-executable instructions are executed by a processor, they are used to implement 62 The transmission method of any one.
  • the embodiment of the present application provides a transmission method and device.
  • the method includes: determining a second identifier according to a first identifier used to indicate a resource of downlink control information, where the second identifier is a high-level configuration corresponding to the HARQ codebook Identifies, the HARQ codebook is the codebook used for HARQ feedback of the PDSCH corresponding to the downlink control information.
  • the HARQ codebook can be generated based on the second identifier, avoiding the PDSCH from being unable to determine which one to follow during feedback The problem of CORESET of CORSET Pool Index to generate HARQ codebook.
  • FIG. 1 is a schematic diagram of a communication scenario provided by an embodiment of the application
  • FIG. 2 is a schematic diagram of the layout of a terminal device and a TRP provided by an embodiment of the present application;
  • FIG. 3 is a schematic diagram of a possible implementation of REG provided by an embodiment of this application.
  • FIG. 4 is a schematic diagram of CCE provided by an embodiment of this application.
  • FIG. 5 is a schematic diagram of search spaces of different aggregation levels provided by an embodiment of this application.
  • FIG. 6 is a first flowchart of a transmission method provided by an embodiment of this application.
  • FIG. 7 is a schematic diagram of the implementation of the PDCCH indicating the first identifier provided by an embodiment of this application.
  • FIG. 8 is a schematic diagram of implementing the semi-static configuration of the first identifier in the high-level signaling provided by an embodiment of the application;
  • FIG. 9 is a schematic diagram of a second PDCCH provided by an embodiment of this application.
  • FIG. 10 is a schematic diagram of determining the first identifier when a second PDCCH is provided in an embodiment of this application;
  • FIG. 11 is a schematic diagram of determining the first identifier when multiple second PDCCHs are provided in an embodiment of this application;
  • FIG. 12 is a schematic diagram of determining the first identifier when multiple third PDCCHs are provided in an embodiment of this application;
  • FIG. 13 is a schematic diagram of determining the first identifier when a fourth PDCCH is provided in an embodiment of this application;
  • FIG. 14 is a schematic diagram of determining the first identifier when multiple fourth PDCCHs are provided in an embodiment of this application;
  • FIG. 15 is a schematic diagram of determining the first identifier according to the identifier of the second CORESET according to an embodiment of the application;
  • FIG. 16 is a first structural diagram of a transmission device provided by an embodiment of this application.
  • FIG. 17 is a second structural diagram of a transmission device provided by an embodiment of this application.
  • FIG. 18 is a schematic structural diagram of a terminal device provided by an embodiment of this application.
  • FIG. 19 is a schematic structural diagram of a network device provided by an embodiment of this application.
  • 3GPP 3rd Generation Partnership, the third generation partnership project.
  • Terminal equipment It can be a device that includes wireless transceiver functions and can cooperate with network equipment to provide users with communication services.
  • terminal equipment may refer to User Equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, terminal, wireless communication equipment, User agent or user device.
  • the terminal device can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), and wireless communication.
  • Network equipment can be equipment used to communicate with terminal equipment, for example, it can be in the Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA) communication system
  • a base station (Base Transceiver Station, BTS)
  • BTS can also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station (Evolutional Node B) in an LTE system, eNB or eNodeB)
  • the network device may be a relay station, access point, vehicle-mounted device, wearable device, and network-side device in the future 5G network or the network after 5G, or the future evolution of the public land mobile network (Public Land Mobile Network) , PLMN) network equipment, etc. in the network.
  • Public Land Mobile Network Public Land Mobile Network
  • the network equipment involved in the embodiments of the present application may also be referred to as a radio access network (Radio Access Network, RAN) equipment.
  • the RAN equipment is connected to the terminal equipment and is used to receive data from the terminal equipment and send it to the core network equipment.
  • RAN equipment corresponds to different equipment in different communication systems. For example, it corresponds to base station and base station controller in 2G system, corresponds to base station and radio network controller (RNC) in 3G system, and corresponds to evolution type in 4G system.
  • the base station (Evolutional Node B, eNB) corresponds to the 5G system in the 5G system, such as the access network equipment in the NR (for example, the gNB, the centralized unit CU, and the distributed unit DU).
  • the search space in the LTE system is defined as a series of control channel element (CCE) resources that need to be blindly detected for each aggregation level, including the starting position of the CCE and the number of candidate resources.
  • CCE control channel element
  • Control Resource Set It is a type of time-frequency resource set introduced in NR, and the UE performs PDCCH detection in the corresponding control resource set.
  • the control resource set is composed of a group of resource element groups (Resource Element Group, REG).
  • Control channel element is a time-frequency resource that includes at least one candidate control channel and occupies the smallest number of resources in the frequency domain and the time domain, and the number of resources in the time domain includes The number of consecutive symbols in the time domain; the number of resources in the frequency domain includes the number of consecutive subcarriers in the frequency domain.
  • the control channel element is also called a control channel resource element, or an enhanced control channel element (eCCE), or a new radio control channel element (NR-CCE) in 5G. .
  • the frequency domain resource units included in each control channel unit in the frequency domain may be continuously mapped or discretely mapped in the frequency domain, and the mapping manner of the frequency domain resource units in the time domain is not limited.
  • FIG. 1 is a schematic diagram of a communication scenario provided by an embodiment of the application. Please refer to FIG. 1, which includes a network device 101 and a terminal device 102, and wireless communication can be performed between the network device 101 and the terminal device 102.
  • the network including the network device 101 and the terminal device 102 can also be called a non-terrestrial communication network (Non-Terrestrial Network, NTN), where NTN refers to the communication between the terminal device and the satellite (also called the network device) The internet.
  • NTN non-terrestrial Network
  • NR New Radio
  • NR refers to a new generation of wireless access network technology, which can be applied to future evolution networks, such as the fifth generation of the future.
  • 5G the 5th Generation Mobile Communication
  • the solutions in the embodiments of this application can also be applied to other wireless communication networks such as Wireless Fidelity (WIFI) and Long Term Evolution (LTE), and the corresponding names can also be used in other wireless communication networks. The name of the function is substituted.
  • WIFI Wireless Fidelity
  • LTE Long Term Evolution
  • 3Gpp 3rd Generation Partnership Project, the third-generation partnership project
  • eMBB mobile broadband enhancement
  • MassiveMTC large-scale Internet of Things
  • Low-latency and high-reliability communications Ultra-relaible and Low Latency communication
  • Massive MIMO Multiple-Input Multiple-Output, Multiple-Input Multiple-Output
  • beamforming has been discussed as an important technical feature of 5G.
  • TRP Transmission Reception Point
  • 5G. Point 5G. Point
  • FIG. 2 is a schematic diagram of the layout of the terminal device and the TRP provided in an embodiment of the present application.
  • TRP1 and TRP2 there are two TRPs in the figure marked TRP1 and TRP2, where each TRP can correspond to multiple beam paths, TRPs can communicate with each other, and the communication between TRPs can be through wired connection or wireless In some cases, if the two TRPs are far apart, they can also be completed by relaying, depending on the actual deployment scenario.
  • TRP1 can be used as a service TRP (equivalent to a base station) for sending a channel to a terminal device
  • TRP2 can also be used as a service TRP (equivalent to a base station) for sending a channel to a terminal device.
  • the network equipment is used for PDCCH transmission by configuring the control resource set (CORESET) and search space (Search Space).
  • CORESET control resource set
  • Search Space search space
  • REG resource element group
  • CCE control channel elements
  • two dedicated control channel resource units are defined in NR: REG and CCE.
  • one REG consists of one REG is composed of 4 or 6 adjacent resource element (Resource Element) REs located on the same OFDM symbol, but the number of available REs is only 4.
  • an REG composed of 6 REs Contains two reference signals (reference signals, RS), where the RE occupied by the RS cannot be used by the REG of the PDCCH.
  • FIG. 3 is a schematic diagram of a possible implementation of REG provided in an embodiment of this application, as shown in FIG. 3:
  • Fig. 3 includes a total of 8 REGs, among which, symbol 0 includes 2 REGs, symbol 1 includes 3 REGs, and symbol 2 includes 3 REGs.
  • FIG. 4 is a schematic diagram of the CCE provided by an embodiment of the application, as shown in FIG. 4:
  • One CCE includes 9 REGs, then one CCE includes 36 REs.
  • the CCE is a time-frequency resource that includes at least one candidate control channel and occupies the smallest amount of resources in the frequency domain and the time domain.
  • the terminal device Since the PDCCH is a command sent by a network device, the terminal device has not received other information except some system information before, so the terminal device does not know the number and location of the CCE occupied by the PDCCH, so the terminal device needs to pass the blind detection attempt.
  • the time-frequency resource location and aggregation level of the PDCCH are detected to receive the PDCCH.
  • a PDCCH search space is introduced.
  • the PDCCH monitoring of the NR terminal device is performed in the PDCCH search space, and the network device can configure up to 10 PDCCH search spaces to the terminal device.
  • the PDCCH search space can be notified to the terminal device by the network device through RRC signaling.
  • the configuration information of the search space can include the following information in Table 1:
  • each PDCCH search space configured by the network device for the terminal device corresponds to its own configuration information.
  • the search space is a segment of logical resources defined by CCEs, and is a set of PDCCHs that need to be detected, where the search space is a set of candidate PDCCHs (PDCCH candidates) under one or more aggregation levels.
  • the aggregation level of the PDCCH actually sent by the network equipment is variable over time. Since there is no related signaling to inform the terminal equipment, the terminal equipment needs to blindly detect the PDCCH under different aggregation levels, where the PDCCH to be blindly detected is called a candidate PDCCH.
  • the terminal device will decode all candidate PDCCHs in the search space. If the cyclic redundancy check (CRC) check passes, the content of the decoded PDCCH is considered valid for the currently decoded terminal device. And use the information obtained by decoding to perform subsequent operations.
  • CRC cyclic redundancy check
  • the PDCCH search space may include multiple candidate PDCCHs with the same aggregation level.
  • a candidate PDCCH is composed of L CCEs, and L is called the aggregation level of the candidate PDCCH, where L is greater than or equal to 1.
  • the integer of or the value of L belongs to the set ⁇ 1, 2, 4, 8, 16 ⁇ or ⁇ 4, 8, 16 ⁇ or ⁇ 1, 2, 4, 8, 16, 32 ⁇ .
  • the numbers of the L CCEs included in a candidate PDCCH are consecutive, where the start CCE represents the CCE with the smallest number (index) among the L CCEs.
  • a set of multiple candidate PDCCHs is also called a search space set.
  • candidate PDCCHs with the same number of CCEs included in the search space set can be grouped into one group. Each group of candidate PDCCHs can form a search space.
  • the number of CCEs included in the candidate PDCCH is defined as the aggregation level (AL) of the search space.
  • FIG. 5 is a schematic diagram of the search spaces of different aggregation levels provided in an embodiment of the application, as shown in FIG. 5:
  • the network device can configure multiple search spaces for the terminal device.
  • the network The device in each downlink bandwidth part (Bandwidth Part, BWP) of each serving cell, the network The device can configure a maximum of 10 search space sets for the terminal device, and the search space set is configured with time domain configuration information to instruct the user to detect the time domain position of the PDCCH.
  • the network device configures the CORESET ID associated with each search space collection, and the user can obtain the physical resources of the search space collection in the frequency domain through the CORESET ID.
  • Each search space collection has a unique associated CORESET ID. Different search space sets can be associated with the same CORESET ID.
  • the terminal device determines the time-frequency domain position of the candidate PDCCH according to the time domain given by the search space set and the frequency domain of the associated CORESET ID and other parameters in the search space set.
  • the configuration information of each search space may be different from each other, and the specific configuration information of each search space may be determined according to actual conditions, and will not be repeated here.
  • the PDCCH occupies the entire frequency band in the frequency domain, and occupies the first 1-3 OFDM symbols of each subframe in the time domain.
  • the network device only needs to inform the terminal device of the number of OFDM symbols occupied by the PDCCH, and the terminal device can determine the search space of the PDCCH.
  • CORESET is used to define a set of time-frequency resources that carry control information, and the terminal device detects the PDCCH channel in the set of time-frequency resources to obtain scheduling information.
  • the control resource set includes multiple physical resource blocks in the frequency domain, including 1 to 3 OFDM symbols in the time domain, and can be located anywhere in the time slot.
  • the configuration information of CORESET may include, for example, frequency domain resource information. , Time domain resource information, time length information, etc.
  • the time domain resources occupied by CORESET are semi-statically configured by high-level parameters.
  • the network device when the network device configures CORESET, it configures one or a group of transmission configuration indication (Transmission Configuration Indication, TCI) states for each CORESET.
  • TCI Transmission Configuration Indication
  • the tci state is used to indicate that the terminal device is in the Search Space associated with the CORESET.
  • the network device When the network device configures a set of tci state for a CORESET, the network device will use the media access control (MAC) control element (control). element, CE) signaling activates a unique tci state for the CORESET, which is used to indicate the channel filter coefficient of the terminal device when demodulating the PDCCH.
  • MAC media access control
  • CE control element
  • the network device also configures a CORSET Pool Index for each CORESET to indicate whether it is the same TRP. For CORESETs with the same configured CORSET Pool Index, the terminal device can determine that this is data from the same TRP.
  • CORSET Pool Index can be 0 and 1.
  • the meaning of CORSET Pool Index is exemplarily introduced below in conjunction with Table 1.
  • search space 1 is associated with CORESET1
  • search space 2 is associated with CORESET2
  • search space 3 is associated with CORESET3, assuming CORESET1 and CORESET3 If the CORSET Pool Index is 0, it can be determined that the TRP corresponding to CORESET1 and CORESET3 are the same (TRP0), and the CORSET Pool Index of CORESET2 is 1, then it can be determined that the TRP corresponding to CORESET2 is different from the TRP corresponding to CORESET1 and CORESET3 (TRP1) .
  • CORSET Pool Index can indicate the TRP corresponding to CORESET.
  • CORSET Pool Index can indicate which TRP the channel information on the corresponding search space is.
  • the above introduction is the implementation mode where the value range of CORSET Pool Index is 0 and 1, and the corresponding can indicate two different TRPs.
  • the value range of CORSET Pool Index can also be, for example, 0, 1, 2, and three different TRPs can be indicated correspondingly.
  • the value range of CORSET Pool Index and the TRP indicated by it can be The selection is made according to actual needs, which is not particularly limited in this embodiment.
  • the network equipment can schedule the physical downlink shared channel (PDSCH) transmission for the terminal equipment through the downlink control information (downlink control information, DCI) authorized by the downlink, where the downlink authorized DCI can carry In the PDCCH, the downlink authorized DCI includes physical uplink control channel (PUCCH) resource indication information.
  • the terminal device After the terminal device receives the PDSCH, the terminal device can determine the PDSCH decoding result (acknowledgement, ACK) or negative acknowledgement (NACK information), and feed back the decoding result to the network device through the PUCCH resource.
  • the HARQ mechanism is a retransmission mechanism of the medium access control (MAC) layer.
  • the HARQ mechanism can retransmit data that has been lost or has been transmitted incorrectly.
  • the HARQ process includes an uplink HARQ process and a downlink HARQ process, and the uplink HARQ process and the downlink HARQ process are independent of each other.
  • each downlink HARQ process processes 1 transport block (TB) at the same time; for terminal equipment that supports downlink space division multiplexing, each downlink HARQ process can process 1 transport block at the same time Or 2 TB.
  • Each uplink HARQ process of the terminal equipment processes 1 TB at the same time.
  • time domain In the time domain, it can be divided into synchronous HARQ and asynchronous HARQ. Asynchronous HARQ retransmission can occur at any time, and the same TB is retransmitted The time interval from the previous single transmission is not fixed.
  • frequency domain In the frequency domain, it can be divided into non-adaptive HARQ and adaptive HARQ. Adaptive HARQ can change the frequency domain resources and modulation and coding strategies used for retransmission ( Modulation and Coding Scheme, MCS).
  • MCS Modulation and Coding Scheme
  • both uplink and downlink adopt asynchronous HARQ
  • HARQ-ACK information or HARQ-NACK information can be carried on PUCCH or physical uplink shared channel (PUSCH).
  • PUSCH physical uplink shared channel
  • HARQ-ACK information if a terminal device transmits HARQ-ACK information on a PUCCH, the terminal device first determines the PUCCH resource set (PUCCH resource set) according to the number of bits of the HARQ-ACK information, and then according to the indication in the PDCCH
  • the PUCCH resource indicator (PUCCH resource indicator) is used to determine the PUCCH resource for transmitting HARQ-ACK information.
  • the repeated transmission of PDSCH based on Multi-transmission and Reception Point is scheduled by only one PDCCH, and the PDCCH corresponds to only one CORSET Pool Index, although the repeated PDSCH
  • the transmission may be transmitted by multiple TRPs, but because the PDCCH that schedules the PDSCH has a unique CORSET Pool Index, the PDSCH will be fed back according to the CORSET Pool Index corresponding to the CORESET where the PDCCH is located for HARQ codebook generate.
  • the PDCCH can be repeatedly transmitted by the CORESET of multiple different CORSET Pool Indexes. Assuming that the CORSET Pool Index of the CORESET corresponding to the current PDCCH is 1, it indicates that the PDCCH is sent by TRP1, and assuming that the PDCCH repetition (repetition) ) The CORSET Pool Index of the corresponding CORESET is 0, which indicates that the PDCCH repetition is sent by TRP0. Among them, the PDCCH and PDCCH repetition indicate the same PDSCH. When receiving the PDSCH, the terminal device cannot determine who sent the current PDSCH. When the terminal device performs PDSCH feedback, it cannot determine which CORSET Pool Index CORESET should be used to generate HARQ codebook.
  • the terminal device can be instructed by means of dynamic indication, semi-static configuration, or preset rules.
  • the HARQ codebook is generated according to the CORESET of which CORSET Pool Index.
  • FIG. 6 is the first flow chart of the transmission method provided by an embodiment of the application.
  • the method includes:
  • the first identifier is used to indicate resources of downlink control information, for example, the first identifier may be used to indicate time domain resources, and/or frequency domain resources, and/or time-frequency resources of downlink control information.
  • the first identifier includes at least one of the following: the identifier of the first CORESET, the identifier of the first high-level configuration (CORSET Pool Index), and the identifier of the first search space.
  • the subsequent protocol if a new first identifier for indicating downlink control information resources is specified, it can also be used to implement the technical solution of this application, that is, as long as the first One identifier is used to determine the identifier of the HARQ codebook corresponding to the PDSCH indicated by the repeated transmission PDCCH, and the other possible implementations are selected according to requirements.
  • the terminal device Based on the above content, it can be determined that the terminal device will monitor the PDCCH in the search space.
  • the terminal device detects the PDCCH and decodes it successfully, the terminal device can receive the PDCCH, and the corresponding terminal device can determine the location of the first search space.
  • the configuration information of the search space includes the identification of the associated CORESET, and the terminal device can determine the identification of the first CORESET according to the search space;
  • the network device configures a CORSET Pool Index for each CORESET, and the terminal device can determine the identity of the first CORSET Pool Index according to the identity of the first CORESET.
  • the first identifier may include at least one of the above-mentioned introductions, and the specific implementation may be selected according to actual requirements, which is not particularly limited in this embodiment.
  • the second identifier of the CORSET Pool Index corresponding to the HARQ codebook is determined according to the first identifier, where the HARQ codebook is the codebook used for HARQ feedback of the PDSCH corresponding to the downlink control information.
  • the terminal device detects and receives the PDSCH according to the time-frequency resource indicated by the downlink control information.
  • the second identifier of the CORSET Pool Index corresponding to the HARQ codebook can be determined according to the first identifier. Identification, combined with the above-mentioned embodiments, those skilled in the art can determine that CORSET Pool Index can indicate the TRP that sends channel information, that is to say, the second identification of CORSET Pool Index can be used to distinguish HARQ codebooks.
  • the second identifier can determine to which TRP the HARQ information is fed back, so that the HARQ codebook can be generated.
  • the transmission method provided by the embodiment of the present application includes: determining a second identifier according to a first identifier used to indicate a resource of downlink control information, where the second identifier is an identifier of a higher layer configuration corresponding to the HARQ codebook, and the HARQ codebook Codebook used for HARQ feedback of PDSCH corresponding to downlink control information.
  • the HARQ codebook can be generated based on the second identifier, avoiding the PDSCH from being unable to determine which one to follow during feedback The problem of CORESET of CORSET Pool Index to generate HARQ codebook.
  • the transmission method provided in this application further includes:
  • At least one repetitively transmitted physical downlink control channel PDCCH is received from the network device, and the PDSCH is received according to the time-frequency resource indicated by the at least one repetitively transmitted PDCCH.
  • the network device may configure a set of CORESETs to the terminal device to indicate the set of frequency domain resources for transmitting the PDCCH, wherein each CORESET is configured with one or a set of tci state; and, the network equipment can also configure a set of Search Spaces to the terminal equipment to indicate the time domain resources and monitoring period of the candidate PDCCH and other related parameter configurations. Among them, at any time, only one CORESET will be activated The tci state.
  • the resource identifiers corresponding to the PDCCHs that are repeatedly transmitted are different, where the resource identifier includes at least one of the following: the identifier of the second control resource set CORESET, the identifier of the second high-level configuration, and the second search The identity of the space.
  • the identifier of the second CORESET is the identifier of the CORESET to which the PDCCH belongs
  • the identifier of the second search space is the identifier of the search space to which the PDCCH belongs
  • the identifier configured by the second higher layer is the identifier of the CORESET group where the CORESET to which the PDCCH belongs.
  • the resource identifier is the identifier of the second CORESET, that is, the identifiers of the second CORESET corresponding to the repeated transmissions of the PDCCH are different; for another example, assume that the resource identifier is the identifier of the second CORSET Pool Index, that is, the identifiers of the repeated transmissions of the PDCCHs The identification of the corresponding second CORSET Pool Index is different.
  • the resource identifiers corresponding to the PDCCHs that are set to be repeatedly transmitted are different, for example, the following two implementation manners can be adopted:
  • the network device can configure M second CORESET identifiers for a certain Search Space, where M is an integer greater than or equal to 2, used to associate the Search Space with the M second CORESET identifier locations.
  • M is an integer greater than or equal to 2
  • the network device may configure a different second CORESET identifier for certain M Search Spaces, where M is an integer greater than or equal to 2, used to associate the M Search Spaces respectively To the CORESET indicated by the different M second CORESET identifiers, and the network device also configures an identifier for the M Search Spaces.
  • the identifier is used to indicate that the PDCCHs sent in the M Search Spaces interact according to a certain association relationship. Repetition for the respective PDCCH.
  • the network device may send the same repeated transmission PDCCH to schedule the PDSCH according to the tci states activated by these M CORESETs. Specifically, the network device sends the PDSCH on the time-frequency resource indicated by the PDCCH.
  • the terminal device sets the channel filter coefficients according to the tci states activated by these M CORESETs, and receives the PDCCH on the corresponding time-frequency resources.
  • the terminal device demodulates the received PDCCH, it can correctly demodulate one of the PDCCH, or Part of the PDCCH or all PDCCHs, that is, the terminal device may receive one PDCCH of the repeatedly transmitted PDCCH, or the terminal device may also receive multiple PDCCHs of the repeatedly transmitted PDCCH, which is not limited in this embodiment.
  • the terminal equipment can receive and detect the PDSCH on the time-frequency resource indicated by the correctly demodulated PDCCH.
  • the time-frequency resources indicated by each PDCCH are the same, and correspondingly, the PDSCH received by the terminal device according to the repeatedly transmitted PDCCH is also the same.
  • the terminal device needs to feed back HARQ-ACK information or HARQ-NACK information to the TRP.
  • the second CORESET identifier and the second CORSET Pool Index identifier corresponding to each PDCCH that are repeatedly transmitted are not the same.
  • the PDCCH repetition is sent by TRP0, and the other PDCCH repetition is sent by TRP1, so the terminal device needs to determine whether to feed back HARQ-ACK information or HARQ-NACK information to TRP0 or TRP1.
  • the terminal device is the second identifier determined according to the first identifier, so as to determine which TRP to feed back HARQ-ACK information or HARQ-NACK information, in this application
  • the first identifier may be dynamically indicated; or, the first identifier may be semi-dynamically configured statically; or, the first identifier may be determined according to the first rule, and the following combination of specific
  • the embodiments illustrate various possible implementation modes:
  • the first identifier may be dynamically indicated.
  • the first identifier may be dynamically indicated by the downlink control information DCI in the PDCCH.
  • the remaining indication information in the PDCCH may also be indicated by the remaining indication information in the PDCCH, which is not limited in this embodiment.
  • FIG. 7 is a schematic diagram of the implementation of the first identifier of the PDCCH indication provided by an embodiment of the application, as shown in FIG. 7:
  • TRP0 sends PDCCH to terminal equipment
  • TRP1 also sends PDCCH to terminal equipment.
  • the PDCCHs sent by TRP0 and TRP1 are PDCCHs that are repeatedly transmitted, which means that the PDCCHs transmitted by these two TRPs are the same.
  • the PDCCH dynamically indicates the first identifier corresponding to the PDSCH scheduled by the PDCCH.
  • the terminal device can obtain the first CORSET Pool Index ID corresponding to CORESET1, assuming that the first CORSET Pool Index ID is CORSET Pool Index 0, And CORSET Pool Index 0 corresponds to TRP0, the terminal device can determine that HARQ-ACK information or HARQ-NACK information should be fed back to TRP0 currently.
  • the terminal device can determine that the second identifier of the CORSET Pool Index corresponding to the HARQ codebook is CORSET Pool Index 0 according to the identifier of the first CORESET, and the terminal device can generate the HARQ codebook according to the CORSET Pool Index 0.
  • the first identifier indicated by the network device in the PDCCH is the identifier of the first CORSET Pool Index (CORSET Pool Index 1), and CORSET Pool Index 1 corresponds to TRP1, then the terminal device can determine that the HARQ-ACK information should be fed back to TRP1. Or HARQ-NACK information.
  • the terminal device can determine that the second identifier of the CORSET Pool Index corresponding to the HARQ codebook is CORSET Pool Index 1 with the identifier of the first CORSET Pool Index, and the terminal device can generate the HARQ codebook according to the CORSET Pool Index 1.
  • the terminal device can obtain the identifier of the first CORESET associated with search space 1, assuming it is CORESET1 and the corresponding CORESET1
  • the first CORSET Pool Index is identified as CORSET Pool Index 0, and CORSET Pool Index 0 corresponds to TRP0, the terminal device can determine that HARQ-ACK information or HARQ-NACK information should be fed back to TRP0 at present.
  • the terminal device can determine that the second identifier of the CORSET Pool Index corresponding to the HARQ codebook is CORSET Pool Index 0 according to the identifier of the first search space, and the terminal device can generate the HARQ codebook according to the CORSET Pool Index 0.
  • the terminal device After the terminal device generates the HARQ codebook, it can select the PUCCH resource set configured by the network device according to the number of bits of the HARQ codebook, and the terminal device selects the PUCCH resource in the PUCCH resource set according to the PUCCH resource indicator indicated in the PDCCH to transmit the corresponding HARQ codebook.
  • the network device indicates the first identifier through the PDCCH, what the specific first identifier is depends on which TRP sends the PDSCH scheduled by the current PDCCH, that is, assume that TRP0 and TRP 1 sends the same repeated transmission PDCCH, which is used to schedule PDSCH1, where PDSCH1 is sent by TRP1, the first identifier indicated by the PDCCH sent by the network device is also the first identifier corresponding to TRP1, because When the terminal device receives PDSCH1, it is correct to feed back HARQ information to TRP0.
  • the embodiment of the present application indicates the first identifier through the PDCCH, which can realize the dynamic indication of the first identifier.
  • the PDSCH scheduled by the PDCCH sent by the network device at time 1 is sent by TRRO, and the PDCCH sent by the network device at time 2 is scheduled If the PDSCH is sent by TRR1 (not PDCCH repeated transmission), the first identifiers indicated by the two PDCCHs are not the same, so that dynamic indication of the first identifier can be realized, so that the terminal device can quickly and efficiently determine the second identifier , So as to generate the second codebook to effectively realize HARQ feedback.
  • the first identifier may be semi-statically configured by high-layer signaling.
  • the high-layer signaling may include first information, where the first information is used to determine the first identifier.
  • the first information is used to indicate whether the resource identifier of each PDCCH is the first identifier, for example, the first information may be 0 or 1, respectively used to identify whether the resource identifier is the first identifier or the first identifier. An identifier; or, the first information may also be false or true, for example, which is used for whether the resource identifier is the first identifier or the first identifier, respectively.
  • the first information may be used to indicate which specific first identifier is, for example, it may indicate that the first identifier is CORESET1, or it may indicate that the first identifier is CORESET pool index1.
  • This embodiment implements semi-static configuration of high-level signaling The method is not limited.
  • the first information may also be used to indicate that the first identifier is a default identifier.
  • FIG. 8 is a schematic diagram of the implementation of the first identifier of semi-static configuration of high-level signaling provided by an embodiment of the application, as shown in FIG. 8:
  • the terminal device receives high-level signaling, where the first identifier is configured in the high-level signaling.
  • the meaning of semi-static configuration means that according to the current configuration information, in a certain period of time or within a certain period of time, it is executed according to the current configuration. For example, when the terminal device receives high-level signaling at time 0, In the subsequent period of time, the terminal equipment can determine the second identifier according to the first identifier indicated by the current high-layer signaling to generate the HARQ codebook.
  • the reason for the semi-static configuration is that a certain TRP sends the PDSCH to the terminal device within a period of time after the current moment. Therefore, it can be determined that the TRP that needs to be fed back to the HARQ codebook is the same for a period of time after the current moment.
  • the first identifier can be configured semi-statically through high-layer signaling.
  • it may be indicated by high-layer signaling that from the current moment, as long as it is a PDCCH that is repeatedly transmitted by a certain CORESET, it will be fed back to the TRP indicated by the first identifier.
  • the first identifier includes at least one of the following: the identifier of the first control resource set CORESET, the identifier of the first high-level configuration, and the identifier of the first search space.
  • the terminal device can obtain the first CORSET Pool Index identifier corresponding to CORESET1, assuming that the first CORSET Pool Index identifier is CORSET Pool Index.
  • Index 0 and CORSET Pool Index 0 correspond to TRP0, and the terminal device can determine that HARQ-ACK information or HARQ-NACK information should be fed back to TRP0.
  • the terminal device can determine that the second identifier of the CORSET Pool Index corresponding to the HARQ codebook is CORSET Pool Index 0 according to the identifier of the first CORESET, and the terminal device can generate the HARQ codebook according to the CORSET Pool Index 0.
  • the terminal device can determine that HARQ should be fed back to TRP1.
  • -ACK information or HARQ-NACK information For another example, if the network device semi-statically configures the first identifier of the first CORSET Pool Index (CORSET Pool Index 1) through high-level signaling, and CORSET Pool Index 1 corresponds to TRP1, the terminal device can determine that HARQ should be fed back to TRP1. -ACK information or HARQ-NACK information.
  • the terminal device can determine that the second identifier of the CORSET Pool Index corresponding to the HARQ codebook is CORSET Pool Index 1 with the identifier of the first CORSET Pool Index, and the terminal device can generate the HARQ codebook according to the CORSET Pool Index 1.
  • the terminal device can obtain the identifier of the first CORESET associated with search space 1, assuming it is CORESET1, and The first CORSET Pool Index corresponding to CORESET1 is identified as CORSET Pool Index 0, and CORSET Pool Index 0 corresponds to TRP0, and the terminal device can determine that HARQ-ACK information or HARQ-NACK information should be fed back to TRP0.
  • the terminal device can determine that the second identifier of the CORSET Pool Index corresponding to the HARQ codebook is CORSET Pool Index 0 according to the identifier of the first search space, and the terminal device can generate the HARQ codebook according to the CORSET Pool Index 0.
  • the terminal device After the terminal device generates the HARQ codebook, it can select the PUCCH resource set configured by the network device according to the number of bits of the HARQ codebook, and the terminal device selects the PUCCH resource in the PUCCH resource set according to the PUCCH resource indicator indicated in the PDCCH to transmit the corresponding HARQ codebook.
  • the first identifier is configured semi-statically through high-level signaling, and the semi-static configuration of the first identifier can be realized without sending DCI for dynamic indication. It is assumed that the PDSCH scheduled by the PDCCH sent by the network device at time 1 is TRR0.
  • the PDSCH that is sent and the PDSCH scheduled by the PDCCH sent by the network device at time 2 is also sent by TRR0, and the first identifiers corresponding to these two PDSCHs can be configured semi-statically through high-level signaling, so there is no need for dynamic configuration, which can effectively save system resources , And can enable the terminal device to effectively determine the second identifier, thereby generating the second codebook, so as to effectively implement HARQ feedback.
  • the first identifier may be determined according to the first rule.
  • the first rule may be, for example, determining the first identifier according to the time information corresponding to each PDCCH that is repeatedly transmitted, and the transmission method provided in the embodiment of the present application further includes:
  • the time information of each PDCCH that is repeatedly transmitted is acquired, where the time information includes at least one of the following: a start transmission time position, an end transmission time position, and a corresponding symbol at the end of the transmission.
  • the terminal device currently receives the first PDCCH, where the first PDCCH is the first PDCCH that is repeatedly transmitted by the terminal device. Then, the terminal device can obtain the repetition configured by the network device according to the first PDCCH.
  • the time information of each PDCCH to be transmitted where the time information includes at least one of the following: a start transmission time position, an end transmission time position, and a corresponding symbol at the end of the transmission.
  • the terminal device can determine the first identifier according to the time information of each PDCCH repeatedly transmitted.
  • the first rule may be, for example, determining the second PDCCH according to the time information of each PDCCH that is repeatedly transmitted, where the second PDCCH is the PDCCH with the earliest time, or the second PDCCH is the latest one. To the PDCCH.
  • the resource identifier of the second PDCCH may be determined as the first identifier.
  • FIG. 9 is a schematic diagram of the second PDCCH provided by an embodiment of the application, as shown in FIG. 9:
  • Figure 9 exemplarily shows 6 repeated transmissions of PDCCH, which are repeated transmissions of PDCCH1 to PDCCH6.
  • the second PDCCH is determined according to the time information of the repeated transmissions of each PDCCH.
  • the second PDCCH may be the one with the earliest initial transmission time among the PDCCHs that are repeatedly transmitted, for example, it may be PDCCH1 in FIG. 6.
  • the second PDCCH is the one with the earliest end of transmission time among the PDCCHs that are repeatedly transmitted.
  • it may be PDCCH1 in FIG. 6.
  • the second PDCCH is the last symbol of the transmission end of each PDCCH that is repeatedly transmitted, for example, it may be PDCCH6 in FIG. 6.
  • the first rule can be directly: the first identifier is the resource of the second PDCCH Logo.
  • FIG. 10 is a schematic diagram of determining the first identifier of a second PDCCH according to an embodiment of the application.
  • the resource identifier of PDCCH1 is directly determined as the first identifier.
  • the resource identifier is the identifier of the second CORESET
  • the first identifier is the identifier of the first CORESET
  • the identifier of the first CORESET is the identifier of the second CORESET of PDCCH1.
  • the resource identifier is an identifier configured by the second high layer
  • the first identifier is an identifier configured by the first high layer
  • the first identifier is an identifier configured by the second high layer of PDCCH1.
  • the resource identifier is the identifier of the second search space
  • the first identifier is the identifier of the first search space
  • the first identifier is the identifier of the second search space of PDCCH1.
  • the first identifier needs to be determined according to the resource identifiers of the second search spaces of the multiple second PDCCHs.
  • the third PDCCH may be determined according to the identifiers of the second search spaces of the multiple second PDCCHs.
  • the identifier of the second search space of the third PDCCH is the smallest among the identifiers of the second search space of each second PDCCH.
  • the identifier of the second search space of the third PDCCH is the largest among the identifiers of the second search space of each second PDCCH.
  • the first rule is: the first identifier is the identifier of the second search space of the third PDCCH.
  • FIG. 11 is a schematic diagram of determining the first identifier when multiple second PDCCHs are provided in an embodiment of the application.
  • the second PDCCH with the earliest time there are two second PDCCHs, namely PDCCH1 and PDCCH2, and the third PDCCH can be determined in PDCCH1 and PDCCH2.
  • the second PDCCH of PDCCH1 The search space is identified as search space 1
  • the second search space of PDCCH2 is identified as search space 2.
  • the third PDCCH is PDCCH2
  • the corresponding first identifier is the identifier of the second search space of PDCCH2, that is, the first identifier is the search space 2.
  • the terminal device can determine the identifier of the associated CORESET according to the search space 2, and then determine the identifier of the CORESET pool index, thereby determining the second identifier.
  • the third PDCCH is PDCCH1
  • the corresponding first identifier is the identifier of the second search space of PDCCH1
  • the first identifier is the search space 1.
  • the terminal device can determine the identifier of the associated CORESET according to the search space 1, and then determine the identifier of the CORESET pool index, thereby determining the second identifier.
  • the identifier of the second search space of the third PDCCH cannot be directly determined as the first identifier. Then, the first identifier needs to be determined according to the identifiers of the second CORESETs associated with the second search spaces of the multiple third PDCCHs.
  • the first rule may be: the first identifier is the identifier of the smallest second CORESET among the identifiers of the second CORESET associated with the second search space of each third PDCCH.
  • the first rule is: the first identifier is the identifier of the second CORESET that is the largest among the identifiers of the second CORESET associated with the second search space of each third PDCCH.
  • FIG. 12 is a schematic diagram of determining the first identifier when multiple third PDCCHs are provided in an embodiment of the application.
  • the second PDCCH with the earliest time there are two second PDCCHs, PDCCH1 and PDCCH2, and the third PDCCH can be determined in PDCCH1 and PDCCH2.
  • the second PDCCH of PDCCH1 The search space is identified as search space 1
  • the second search space of PDCCH2 is identified as search space 1. If the two search spaces are the same (the largest or smallest), there are two third PDCCHs, namely PDCCH1 and PDCCH2.
  • the first identifier is determined according to the identifier of the second CORESET associated with the second search space of PDCCH1 and PDCCH2.
  • the identifier of the second CORESET of PDCCH1 is CORESET1
  • the identifier of the second CORESET of PDCCH2 is CORESET0.
  • the first identification is the identification of the second CORESET of PDCCH2, that is to say, the first identification is CORESET0, and the terminal device according to the identification of CORESET, and then The identification of the CORESET pool index is determined, and the second identification is determined.
  • the first identification is the identification of the second CORESET of PDCCH1, that is to say, the first identification is CORESET1
  • the terminal device then according to the identification of CORESET, The identification of the CORESET pool index is determined, and the second identification is determined.
  • the above embodiment introduces the time to first select the PDCCH. When the time is the same, then the smallest or largest second search space identifier is selected. When the second search space identifier is the same, then the smallest or largest second CORESET identifier is selected. In another possible implementation manner, the terminal device may not consider the time of the PDCCH, but directly select the smallest or largest second search space identifier. When the second search space identifiers are the same, then select the smallest or largest second search space.
  • the second CORESET identifier of, the current implementation mode will be described below in conjunction with specific embodiments:
  • the first rule may be, for example, determining the first identifier according to the identifier of the second search space corresponding to each PDCCH that is repeatedly transmitted, and the transmission method provided in the embodiment of the present application further includes:
  • the fourth PDCCH is determined according to the identifier of the second search space of each PDCCH, where the fourth PDCCH is the PDCCH with the largest identifier in the second search space, or the fourth PDCCH is the PDCCH with the smallest identifier in the second search space.
  • the fourth PDCCH is the PDCCH with the largest or smallest identifier of the second search space among the repeated PDCCHs.
  • the first rule is: the first identifier is the identifier of the second search space of the fourth PDCCH.
  • FIG. 13 is a schematic diagram of determining the first identifier when a fourth PDCCH is provided in an embodiment of the application.
  • the identifier of the second search space of PDCCH1 is search space, and 1, the identifier of the second search space of PDCCH2-6 is search space 2, and it is assumed that the PDCCH with the smallest identifier of the second search space is currently selected.
  • the fourth PDCCH is PDCCH1
  • the identifier of the second search space of PDCCH1 can be directly determined as the first identifier, that is, the first identifier is search space 1
  • the terminal device can determine the associated CORESET identifier according to search space 1.
  • determine the identifier of the CORESET pool index thereby determining the second identifier.
  • the identifier of the second search space of the fourth PDCCH cannot be directly determined as the first identifier. Then, the first identifier needs to be determined according to the identifier of the second CORESET associated with the second search space of the multiple fourth PDCCHs.
  • the first rule may be: the first identifier is the identifier of the second CORESET that is the largest among the identifiers of the second CORESET corresponding to each fourth PDCCH.
  • the first rule is: the first identifier is the smallest second CORESET identifier among the identifiers of the second CORESET corresponding to each fourth PDCCH.
  • FIG. 14 is a schematic diagram of determining the first identifier when multiple fourth PDCCHs are provided in an embodiment of the application.
  • the fourth PDCCH is PDCCH1 to PDCCH6, there are 5 in total, and the first identifier can be determined according to the CORESET identifier of each fourth PDCCH.
  • the first rule is: the first identifier is the smallest second CORESET identifier among the identifiers of the second CORESET corresponding to each fourth PDCCH.
  • the first identifier is CORESET0
  • the terminal device determines the identifier of the CORESET pool index corresponding to CORESET0, thereby determining the second identifier.
  • the fourth PDCCH is selected to determine the second CORESE associated with the second search space with the smallest (larger) identifier. 2.
  • the logo of CORESE, and the smallest (larger) second CORESET logo is determined as the first logo.
  • the foregoing embodiment introduces the first selection of the identification of the smallest or largest second search space.
  • the identification of the smallest or largest second CORESET is selected.
  • the terminal device may also not consider the PDCCH time or the second search space identifier, but directly select the smallest or largest second CORESET identifier.
  • the current implementation manner will be described below in conjunction with specific embodiments:
  • the first rule may be, for example, determining the first identifier according to the identifier of the second CORESET associated with the identifier of the second search space corresponding to each PDCCH that is repeatedly transmitted. Then, the transmission method provided in the embodiment of the present application further includes:
  • the identifier of the second CORESET corresponding to each PDCCH that is repeatedly transmitted is obtained.
  • the first rule may be: the first identifier is the identifier of the second CORESET that is the largest among the identifiers of the second CORESET corresponding to each PDCCH that is repeatedly transmitted.
  • the first rule is: the first identifier is the smallest second CORESET identifier among the identifiers of the second CORESET corresponding to each PDCCH that is repeatedly transmitted.
  • FIG. 15 is a schematic diagram of determining the first identifier based on the identifier of the second CORESET provided in an embodiment of the application.
  • the terminal device determines the identifier of the CORESET pool index corresponding to CORESET2 to determine the second identifier.
  • the terminal device needs to determine which TRP to send HARQ information to, and the network device also needs to determine which TRP receives HARQ information. Therefore, the network device also needs to determine the second identifier.
  • the implementation on the network device side is similar to that on the terminal device side, except that the execution subject is different.
  • the specific implementation refer to the introduction in the foregoing embodiment, which will not be repeated this time.
  • FIG. 16 is a first structural diagram of a transmission device provided by an embodiment of this application.
  • the communication device 160 may include a determining module 1601 and a receiving module 1602, where:
  • the determining module 1601 is configured to determine the second identifier according to the first identifier used to indicate the resource of the downlink control information, where the second identifier is the identifier of the higher layer configuration corresponding to the HARQ codebook, and the HARQ codebook is The codebook used for the HARQ feedback of the PDSCH corresponding to the downlink control information.
  • the first identifier includes at least one of the following:
  • the identification of the first control resource set CORESET the identification of the first high-level configuration, and the identification of the first search space.
  • the identifier configured by the higher layer is used to distinguish the HARQ codebook.
  • a receiving module 1602 In a possible implementation manner, it further includes: a receiving module 1602;
  • the receiving module 1602 is configured to receive at least one repeatedly transmitted physical downlink control channel PDCCH from a network device;
  • the resource identifiers corresponding to the PDCCHs of the repeated transmission are different;
  • the resource identifier includes at least one of the following: the identifier of the second control resource set CORESET, the identifier of the second high-level configuration, and the identifier of the second search space. ;
  • the identifier of the second CORESET is the identifier of the CORESET to which the PDCCH that is repeatedly transmitted belongs
  • the identifier of the second search space is the identifier of the search space to which the PDCCH that is repeatedly transmitted belongs
  • the second high-level configuration The identifier of is the identifier of the CORESET group where the CORESET to which the PDCCH belongs to be repeatedly transmitted.
  • the first identifier is used to determine the HARQ codebook corresponding to the PDSCH indicated by the repeatedly transmitted PDCCH.
  • the first identifier is dynamically indicated.
  • the first identifier is dynamically indicated by the downlink control information DCI in the PDCCH.
  • the first identifier is semi-statically configured by high-layer signaling.
  • the high-layer signaling includes a first message, and the first message is used to determine the first identifier.
  • the first message is used to indicate the first identifier
  • the first message is used to indicate whether each resource identifier is a first identifier.
  • the first identifier is determined according to a first rule.
  • the receiving module 1602 is further configured to:
  • the first PDCCH obtain time information of each of the PDCCHs repeatedly transmitted, where the time information includes at least one of the following: a start transmission time position, an end transmission time position, and a corresponding symbol at the end of the transmission .
  • the determining module 1601 is further configured to:
  • the second PDCCH is determined according to the time information of each PDCCH that is repeatedly transmitted, where the second PDCCH is the PDCCH with the earliest time, or the second PDCCH is the newly received PDCCH.
  • the second PDCCH with the earliest time is the PDCCH with the earliest initial transmission time among the PDCCHs that are repeatedly transmitted.
  • the second PDCCH with the earliest time is the PDCCH with the earliest end of transmission time among the PDCCHs that are repeatedly transmitted.
  • the newly received second PDCCH is the PDCCH with the lowest position of the corresponding symbol at the end of the transmission in each of the PDCCHs that are repeatedly transmitted.
  • the first rule is: the first identifier is the resource identifier of the second PDCCH.
  • the first rule is: determine the first identifier according to the identifier of the second search space of each of the second PDCCHs.
  • the determining module 1601 is further configured to:
  • the first rule is: the first identifier is the identifier of the second search space of the third PDCCH.
  • the first rule is: determine according to the identifier of the second CORESET associated with the second search space of each of the third PDCCHs The first logo.
  • the first rule is: the first identifier is the identifier of the smallest second CORESET among the identifiers of the second CORESET associated with the second search space of each of the third PDCCHs.
  • the first rule is: the first identifier is the identifier of the largest second CORESET among the identifiers of the second CORESET associated with the second search space of each of the third PDCCHs.
  • the determining module 1601 is further configured to:
  • the first rule is: the first identifier is the identifier of the second search space of the fourth PDCCH.
  • the first rule is: the first identifier is the identifier of the second CORESET corresponding to each of the fourth PDCCHs The logo of the largest second CORESET.
  • the first rule is: the first identifier is the identifier of the second CORESET corresponding to each of the fourth PDCCHs The logo of the smallest second CORESET.
  • the determining module 1601 is further configured to:
  • the identifier of the second CORESET corresponding to each of the repeatedly transmitted PDCCHs is obtained.
  • the first rule is: the first identifier is the identifier of the largest second CORESET among the identifiers of the second CORESET corresponding to each of the PDCCHs that are repeatedly transmitted.
  • the first rule is: the first identifier is the smallest second CORESET identifier among the identifiers of the second CORESET corresponding to each of the PDCCHs that are repeatedly transmitted.
  • the transmission device provided in the embodiments of the present application can execute the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects are similar, and details are not described herein again.
  • FIG. 17 is a second structural diagram of a transmission device provided by an embodiment of this application.
  • the transmission device 150 may include a determining module 1701 and a sending module 1702, where:
  • the determining module 1701 is configured to determine the second identifier according to the first identifier used to indicate the resource of the downlink control information, where the second identifier is the identifier of the higher layer configuration corresponding to the HARQ codebook, and the HARQ codebook is The codebook used for the HARQ feedback of the PDSCH corresponding to the downlink control information.
  • the first identifier includes at least one of the following:
  • the identification of the first control resource set CORESET the identification of the first high-level configuration, and the identification of the first search space.
  • the identifier configured by the higher layer is used to distinguish the HARQ codebook.
  • a sending module 1702 it further includes: a sending module 1702;
  • the sending module 1702 is configured to send at least one repeatedly transmitted physical downlink control channel PDCCH to a terminal device, and the at least one repeatedly transmitted PDCCH is used to indicate the time-frequency resource of the PDSCH.
  • the resource identifiers corresponding to the PDCCHs of the repeated transmission are different;
  • the resource identifier includes at least one of the following: the identifier of the second control resource set CORESET, the identifier of the second high-level configuration, and the identifier of the second search space. ;
  • the identifier of the second CORESET is the identifier of the CORESET to which the PDCCH that is repeatedly transmitted belongs
  • the identifier of the second search space is the identifier of the search space to which the PDCCH that is repeatedly transmitted belongs
  • the second high-level configuration The identifier of is the identifier of the CORESET group where the CORESET to which the PDCCH belongs to be repeatedly transmitted.
  • the first identifier is used to determine the HARQ codebook corresponding to the PDSCH indicated by the repeatedly transmitted PDCCH.
  • the first identifier is dynamically indicated.
  • the first identifier is dynamically indicated by the downlink control information DCI in the PDCCH.
  • the first identifier is semi-statically configured by high-layer signaling.
  • the high-layer signaling includes a first message, and the first message is used to determine the first identifier.
  • the first message is used to indicate the first identifier
  • the first message is used to indicate whether each resource identifier is a first identifier.
  • the first identifier is determined according to a first rule.
  • the sending module 1702 is further configured to:
  • Time information includes at least one of the following: a start transmission time position, an end transmission time position, and a corresponding symbol at the end of the transmission.
  • the sending module 1702 is further configured to:
  • the second PDCCH is the PDCCH with the earliest time, or the second PDCCH is the newly received PDCCH.
  • the second PDCCH with the earliest time is the PDCCH with the earliest initial transmission time among the PDCCHs that are repeatedly transmitted.
  • the second PDCCH with the earliest time is the PDCCH with the earliest end of transmission time among the PDCCHs that are repeatedly transmitted.
  • the newly received second PDCCH is the PDCCH with the lowest position of the corresponding symbol at the end of the transmission in each of the PDCCHs that are repeatedly transmitted.
  • the first rule is: the first identifier is the resource identifier of the second PDCCH.
  • the first rule is: determine the first identifier according to the identifier of the second search space of each of the second PDCCHs.
  • the sending module 1702 is further configured to:
  • the third PDCCH is the PDCCH with the largest identifier of the second search space in each of the second PDCCHs, or the third PDCCH is the second PDCCH in each of the second PDCCHs.
  • the PDCCH with the smallest identifier of the search space is the PDCCH with the largest identifier of the search space.
  • the first rule is: the first identifier is the identifier of the second search space of the third PDCCH.
  • the first rule is: determine according to the identifier of the second CORESET associated with the second search space of each of the third PDCCHs The first logo.
  • the first rule is: the first identifier is the identifier of the smallest second CORESET among the identifiers of the second CORESET associated with the second search space of each of the third PDCCHs.
  • the first rule is: the first identifier is the identifier of the largest second CORESET among the identifiers of the second CORESET associated with the second search space of each of the third PDCCHs.
  • the first PDCCH is further used to indicate the identifier of the second search space of each of the PDCCHs that are repeatedly transmitted;
  • the sending module 1702 is also used for:
  • the fourth PDCCH is the PDCCH with the largest identifier in the second search space, or the fourth PDCCH is the PDCCH with the smallest identifier in the second search space.
  • the communication device provided in the embodiments of the present application can execute the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects are similar, and details are not described herein again.
  • FIG. 18 is a schematic structural diagram of a terminal device provided by an embodiment of the application.
  • the terminal device 180 may include: a transceiver 21, a memory 22, and a processor 23.
  • the transceiver 21 may include a transmitter and/or a receiver.
  • the transmitter can also be referred to as a transmitter, a transmitter, a transmission port or a transmission interface and other similar descriptions
  • the receiver can also be referred to as a receiver, a receiver, a reception port or a reception interface and other similar descriptions.
  • the transceiver 21, the memory 22, and the processor 23 are connected to each other through a bus 24.
  • the memory 22 is used to store program instructions
  • the processor 23 is configured to execute the program instructions stored in the memory, so as to enable the terminal device 20 to execute any of the transmission methods shown above.
  • the receiver of the transceiver 21 can be used to perform the receiving function of the terminal device in the above-mentioned transmission method.
  • FIG. 19 is a schematic structural diagram of a network device provided by an embodiment of this application.
  • the network device 190 may include: a transceiver 31, a memory 32, and a processor 33.
  • the transceiver 31 may include: a transmitter and/or a receiver.
  • the transmitter can also be referred to as a transmitter, a transmitter, a transmission port or a transmission interface and other similar descriptions
  • the receiver can also be referred to as a receiver, a receiver, a reception port or a reception interface and other similar descriptions.
  • the transceiver 31, the memory 32, and the processor 33 are connected to each other through a bus 34.
  • the memory 32 is used to store program instructions
  • the processor 33 is configured to execute the program instructions stored in the memory, so as to enable the terminal device 20 to execute any of the transmission methods shown above.
  • the receiver of the transceiver 31 can be used to perform the receiving function of the terminal device in the foregoing transmission method.
  • the embodiment of the present application provides a computer-readable storage medium, and the computer-readable storage medium stores a computer-executable instruction, and when the computer-executable instruction is executed by a processor, it is used to implement the above-mentioned transmission method.
  • the embodiment of the present application provides a computer-readable storage medium, and the computer-readable storage medium stores a computer-executable instruction, and when the computer-executable instruction is executed by a processor, it is used to implement the above-mentioned transmission method.
  • the embodiments of the present application may also provide a computer program product, which can be executed by a processor, and when the computer program product is executed, it can implement the transmission method executed by any of the above-mentioned terminal devices.
  • the transmission device, computer-readable storage medium, and computer program product of the embodiments of the present application can execute the transmission method executed by the above-mentioned terminal device.
  • the specific implementation process and beneficial effects refer to the above, and will not be repeated here.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the aforementioned computer program can be stored in a computer readable storage medium.
  • the computer program When the computer program is executed by the processor, it realizes the steps including the foregoing method embodiments; and the foregoing storage medium includes: ROM, RAM, magnetic disk, or optical disk and other media that can store program codes.

Abstract

Selon certains modes de réalisation, la présente invention concerne un procédé et un appareil de transmission. Le procédé comprend : la détermination d'un second identifiant en fonction d'un premier identifiant utilisé pour identifier une ressource d'informations de commande de liaison descendante, le second identifiant étant un identifiant qui est configuré au niveau d'une couche supérieure et qui correspond à un livre de codes HARQ, et le livre de codes HARQ étant un livre de codes utilisé pour la rétroaction HARQ d'un PDSCH correspondant aux informations de commande de liaison descendante. En déterminant, selon un premier identifiant qui identifie une ressource d'informations de commande de liaison descendante, un second identifiant d'un indice de groupe CORSET correspondant à un livre de codes HARQ, un livre de codes HARQ peut être généré selon le second identifiant, ce qui permet d'éviter le problème dans lequel, pendant la rétroaction, un PDSCH ne peut pas déterminer le CORESET dont l'indice de groupe CORSET doit être utilisé pour générer un livre de codes HARQ.
PCT/CN2020/075775 2020-02-18 2020-02-18 Appareil et procédé de transmission WO2021163902A1 (fr)

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CN202080084289.3A CN114762423A (zh) 2020-02-18 2020-02-18 传输方法及装置

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WO2019192715A1 (fr) * 2018-04-06 2019-10-10 Nokia Technologies Oy Livre de codes harq-ack prenant en charge des ue ayant une capacité de réception pdsch parallèle
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