WO2023184536A1 - Procédé de communication, dispositif terminal, et dispositif de réseau - Google Patents

Procédé de communication, dispositif terminal, et dispositif de réseau Download PDF

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Publication number
WO2023184536A1
WO2023184536A1 PCT/CN2022/085052 CN2022085052W WO2023184536A1 WO 2023184536 A1 WO2023184536 A1 WO 2023184536A1 CN 2022085052 W CN2022085052 W CN 2022085052W WO 2023184536 A1 WO2023184536 A1 WO 2023184536A1
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coreset
tci state
signal
identifier
pdcch
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PCT/CN2022/085052
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English (en)
Chinese (zh)
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方昀
史志华
陈文洪
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Oppo广东移动通信有限公司
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Priority to PCT/CN2022/085052 priority Critical patent/WO2023184536A1/fr
Publication of WO2023184536A1 publication Critical patent/WO2023184536A1/fr

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

Definitions

  • the present application relates to the field of communication technology, and more specifically, to a communication method, terminal equipment and network equipment.
  • the repeatedly transmitted PDCCH may transmit multiple PDCCHs for multiple control resource sets (CORESET) respectively to schedule the first signal.
  • the repeatedly transmitted PDCCH can indicate the target transmission configuration indicator (TCI) status.
  • TCI transmission configuration indicator
  • the first information can be determined.
  • the first information may be, for example, information such as quasi co-colated (QCL) information used to demodulate the first signal. Based on the first information, accurate transmission of the first signal can be achieved.
  • QCL quasi co-colated
  • At least one CORESET among multiple CORESETs can work according to a unified TCI state architecture.
  • the TCI status of multiple CORESETs may be different, or the TCI status of multiple CORESETs may be different from the TCI status indicated by the TCI status indication field of the repeatedly transmitted PDCCH. This will result in the inability to determine the target TCI state based on the repeatedly transmitted PDCCH, so that the first information cannot be determined, and thus the first signal cannot be accurately transmitted.
  • This application provides a communication method, network equipment and terminal equipment to determine the target TCI status.
  • a communication method including: a terminal device receives a first physical downlink control channel PDCCH, the first PDCCH belongs to a repeatedly transmitted PDCCH, the repeatedly transmitted PDCCH also includes a second PDCCH, and the repeated The transmitted PDCCH is used to schedule the first signal, the first PDCCH is a candidate PDCCH of the first search space, the second PDCCH is a candidate PDCCH of the second search space, the first search space and the first control resource set CORESET is associated, the second search space is associated with the second control resource set CORESET, and at least one CORESET of the first CORESET and the second CORESET works according to the unified transmission configuration indication TCI state architecture; the terminal device Receive or send the first signal according to first information, wherein the first information is determined based on a target TCI state, the target TCI state is determined based on a second signal, and the second signal is the repeatedly transmitted PDCCH and at least one of the first signals.
  • a communication method including: a network device sends a first physical downlink control channel PDCCH, the first PDCCH belongs to a repeatedly transmitted PDCCH, the repeatedly transmitted PDCCH also includes a second PDCCH, and the repeated The transmitted PDCCH is used to schedule the first signal, the first PDCCH is a candidate PDCCH of the first search space, the second PDCCH is a candidate PDCCH of the second search space, the first search space and the first control resource set CORESET is associated, the second search space is associated with a second control resource set CORESET, and at least one CORESET of the first CORESET and the second CORESET operates according to a unified transmission configuration indicating TCI state architecture; wherein, the The reception or transmission of the first signal is implemented based on the first information, the first information is determined based on the target TCI state, the target TCI state is determined based on the second signal, the second signal is the repeatedly transmitted PDCCH and at least one of the first signals.
  • a terminal device including: a first receiving unit, configured to receive a first physical downlink control channel PDCCH, where the first PDCCH belongs to a repeatedly transmitted PDCCH, and the repeatedly transmitted PDCCH further includes a second physical downlink control channel PDCCH.
  • the repeatedly transmitted PDCCH is used to schedule the first signal
  • the first PDCCH is a candidate PDCCH of the first search space
  • the second PDCCH is a candidate PDCCH of the second search space
  • the first search space and A first control resource set CORESET is associated
  • the second search space is associated with a second control resource set CORESET
  • at least one CORESET of the first CORESET and the second CORESET operates according to a unified transmission configuration indication TCI state architecture.
  • Transmission unit configured to receive or send the first signal according to first information, wherein the first information is determined based on a target TCI state, the target TCI state is determined based on a second signal, and the second signal is At least one of the repeatedly transmitted PDCCH and the first signal.
  • a network device including: a first sending unit, configured to send a first physical downlink control channel PDCCH, where the first PDCCH belongs to a repeatedly transmitted PDCCH, and the repeatedly transmitted PDCCH also includes a second PDCCH, the repeatedly transmitted PDCCH is used to schedule the first signal, the first PDCCH is a candidate PDCCH of the first search space, the second PDCCH is a candidate PDCCH of the second search space, the first search space and A first control resource set CORESET is associated, the second search space is associated with a second control resource set CORESET, and at least one CORESET of the first CORESET and the second CORESET operates according to a unified transmission configuration indication TCI state architecture.
  • the reception or transmission of the first signal is implemented based on the first information
  • the first information is determined based on the target TCI state
  • the target TCI state is determined based on the second signal
  • the second signal is the At least one of the repeatedly transmitted PDCCH and the first signal.
  • a terminal device including a processor, a memory, and a communication interface.
  • the memory is used to store one or more computer programs.
  • the processor is used to call the computer program in the memory so that the terminal device The method described in the first aspect is performed.
  • a sixth aspect provides a network device, including a processor, a memory, and a communication interface.
  • the memory is used to store one or more computer programs.
  • the processor is used to call the computer program in the memory so that the network device Implement the second aspect of the method.
  • embodiments of the present application provide a communication system, which includes the above-mentioned terminal device and/or network device.
  • the system may also include other devices that interact with the terminal or network device in the solution provided by the embodiments of this application.
  • embodiments of the present application provide a computer-readable storage medium that stores a computer program.
  • the computer program causes a terminal device to execute some or all of the steps in the method of the first aspect. .
  • embodiments of the present application provide a computer-readable storage medium that stores a computer program.
  • the computer program causes a network device to execute some or all of the steps in the method of the second aspect. .
  • embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause the terminal to execute the above-mentioned first step. Some or all of the steps in a method on the one hand.
  • the computer program product can be a software installation package.
  • embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a network device to execute Some or all of the steps in the method of the second aspect above.
  • the computer program product can be a software installation package.
  • embodiments of the present application provide a chip, which includes a memory and a processor.
  • the processor can call and run a computer program from the memory to implement the method described in the first aspect or the second aspect. some or all of the steps.
  • a computer program product including a program that causes a computer to execute the method described in the first aspect.
  • a fourteenth aspect provides a computer program product, including a program that causes a computer to execute the method described in the second aspect.
  • a computer program is provided, the computer program causing a computer to execute the method described in the first aspect.
  • a computer program is provided, the computer program causing a computer to execute the method described in the second aspect.
  • This application determines the target TCI status through the second signal, so that the first information can be determined based on the target TCI status, and the first signal can be accurately transmitted based on the first information.
  • Figure 1 is a wireless communication system applied in the embodiment of the present application.
  • Figure 2 is a schematic flow chart of a communication method provided by an embodiment of the present application.
  • Figure 3 is a schematic flow chart of another communication method provided by an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • Figure 5 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • Figure 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 1 is a wireless communication system 100 applied in the embodiment of the present application.
  • the wireless communication system 100 may include a network device 110 and a terminal device 120.
  • the network device 110 may be a device that communicates with the terminal device 120 .
  • the network device 110 may provide communication coverage for a specific geographical area and may communicate with terminal devices 120 located within the coverage area.
  • Figure 1 exemplarily shows one network device and two terminals.
  • the wireless communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. This application The embodiment does not limit this.
  • the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.
  • the terminal equipment in the embodiment of the present application may also be called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT) ), remote station, remote terminal, mobile device, user terminal, terminal, wireless communications equipment, user agent or user device.
  • the terminal device in the embodiment of the present application may be a device that provides voice and/or data connectivity to users, and may be used to connect people, things, and machines, such as handheld devices and vehicle-mounted devices with wireless connection functions.
  • the terminal device in the embodiment of the present application can be a mobile phone (mobile phone), a tablet computer (Pad), a notebook computer, a handheld computer, a mobile internet device (mobile internet device, MID), a wearable device, a virtual reality (virtual reality, VR) equipment, augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, smart Wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, etc.
  • the UE may be used to act as a base station.
  • a UE may act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc.
  • cell phones and cars use sidelink signals to communicate with each other.
  • Cell phones and smart home devices communicate between each other without having to relay communication signals through base stations.
  • the network device in the embodiment of the present application may be a device used to communicate with a terminal device.
  • the network device may also be called an access network device or a wireless access network device.
  • the network device may be a base station.
  • the network device in the embodiment of this application may refer to a radio access network (radio access network, RAN) node (or device) that connects the terminal device to the wireless network.
  • radio access network radio access network, RAN node (or device) that connects the terminal device to the wireless network.
  • the base station can broadly cover various names as follows, or be replaced with the following names, such as: Node B (NodeB), evolved base station (evolved NodeB, eNB), next generation base station (next generation NodeB, gNB), relay station, Access point, transmission point (transmitting and receiving point, TRP), transmitting point (TP), main station MeNB, secondary station SeNB, multi-standard wireless (MSR) node, home base station, network controller, access node , wireless node, access point (AP), transmission node, transceiver node, base band unit (BBU), radio remote unit (Remote Radio Unit, RRU), active antenna unit (active antenna unit) , AAU), radio head (remote radio head, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning node, etc.
  • NodeB Node B
  • eNB evolved base station
  • next generation NodeB next generation NodeB, gNB
  • relay station Access point
  • the base station may be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof.
  • a base station may also refer to a communication module, modem or chip used in the aforementioned equipment or devices.
  • the base station can also be a mobile switching center and a device that undertakes base station functions in device-to-device D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communications, and in 6G networks.
  • Base stations can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific equipment form used by the network equipment.
  • Base stations can be fixed or mobile.
  • a helicopter or drone may be configured to act as a mobile base station, and one or more cells may move based on the mobile base station's location.
  • a helicopter or drone may be configured to serve as a device that communicates with another base station.
  • the network device in the embodiment of this application may refer to a CU or a DU, or the network device includes a CU and a DU.
  • gNB can also include AAU.
  • Network equipment and terminal equipment can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the sky. In the embodiments of this application, the scenarios in which network devices and terminal devices are located are not limited.
  • Some communication systems introduce multiple transmission reception points (MTRP) scenarios to improve user speed experience.
  • MTRP transmission reception points
  • the terminal device can communicate with multiple TRPs.
  • multiple TRPs may belong to different network devices, or multiple TRPs may belong to the same network device.
  • some communication protocols introduce a repeated transmission physical downlink control channel repetition (PDCCH repetition) scheme to improve PDCCH transmission reliability.
  • PDCCH repetition physical downlink control channel repetition
  • multiple PDCCHs may carry the same DCI and be transmitted through multiple TRPs, and one TPR among the multiple TPRs may be used to transmit the first signal scheduled by the PDCCH, wherein multiple identical DCIs may be used to schedule the first signal.
  • the first signal may include, for example, a physical downlink shared channel (PDSCH) or a channel state information reference signal (channel state information reference signal, CSI-RS).
  • PDSCH physical downlink shared channel
  • CSI-RS channel state information reference signal
  • the terminal device obtains the DCI corresponding to each search space by monitoring one or more search spaces (SS).
  • the search space can be divided into: common search space (CSS) and user-specific search space (UE-specific search space, USS).
  • CCS common search space
  • UE-specific search space USS
  • multiple search spaces can be associated with each other.
  • Candidate PDCCHs in multiple interrelated search spaces can carry the same DCI for multiple repeated transmissions.
  • the candidate PDCCHs in the two associated search spaces carry the same DCI for two repeated transmissions. That is to say, candidate PDCCHs in multiple associated search spaces may carry the same DCI for multiple repeated transmissions to schedule the same first signal.
  • a multi-beam system can be used to cover the entire cell. That is to say, each beam in the multi-beam system covers a smaller range in the cell and passes through Beam sweeping is used to achieve the effect of multiple beams covering the entire cell. During the beam scanning process, different beams are used at different times to cover different areas in the cell.
  • both the network equipment and the terminal need to select the appropriate transmit beam and beam through processes such as beam selection and beam measurement.
  • receive beam For example, during the transmission beam selection process, the network device may use different transmission beams to send multiple reference signals in turn, and the multiple reference signals correspond to different resources.
  • the terminal also uses multiple receiving beams to receive the multiple reference signals respectively, and measures the detected reference signals to obtain measurement results.
  • the terminal selects a partial reference signal from the multiple detected reference signals, and feeds back the resource identifiers of the partial reference signals and their corresponding measurement results to the network device, so that the network device can select an appropriate transmit beam for subsequent communication with the terminal. transmit beam.
  • the terminal needs to select a receive beam that matches the transmit beam to communicate with the network device.
  • communication protocols stipulate that transmission beams can be indicated through quasi co-colated (QCL) information, that is, the QCL assumption (also called QCL reference) can be determined.
  • QCL quasi co-colated
  • QCL information can be used to indicate beams.
  • the QCL information is introduced in detail below.
  • the antenna port is used to characterize the wireless channel state, so the channel states experienced by signals on different antenna ports are naturally different, but even so, the channels of different antenna ports may still have some common attributes. These attributes It can be called large-scale channel property. Based on this, some communication systems introduce the concept of QCL: If the large-scale channel properties of the channel passed by the symbols on one of the antenna ports can be inferred from the channel passed by the symbols on the other antenna port, it is called two antennas. The ports are quasi-co-located.
  • two different signals are transmitted from two antenna ports that are very close together. Due to fading, the sidelink channel states they experience may be different, but the large-scale parameters of the two channels may be the same. In this case, although the two signals correspond to different antenna ports, they are quasi-co-located.
  • the above large-scale channel attributes include: Doppler shift, Doppler spread, average delay, delay spread and spatial RX parameter .
  • the quasi-co-location relationship of the reference signals can be determined.
  • QCL information can be used to indicate a quasi-colocation relationship between one or more downlink reference signals and a demodulation reference signal (DMRS) of the PDSCH.
  • DMRS demodulation reference signal
  • QCL information can be indicated by the transmission configuration indicator (TCI) status.
  • TCI status may contain identification (ID) and/or QCL information of the TCI status. Among them, the identifier of the TCI state is used to identify the TCI state.
  • QCL information may include QCL type configuration and QCL reference signal configuration.
  • the above QCL type configuration may include QCL type A, QCL type B, QCL type C or QCL type D.
  • QCL type configurations are defined as follows.
  • QCL Type A (QCL-TypeA): ⁇ Doppler shift, Doppler spread, average delay, delay spread ⁇
  • QCL Type B (QCL-TypeB): ⁇ Doppler shift, Doppler extension ⁇
  • QCL Type C (QCL-TypeC): ⁇ Doppler shift, average delay ⁇
  • QCL type D (QCL-TypeD): ⁇ Air domain receiving parameters ⁇ .
  • the network device can indicate QCL information by indicating the TCI status, and the terminal can determine the QCL information of a certain signal based on the TCI status. For example, if the network device configures the identifier of the reference signal that is quasi-co-located with the signal to be transmitted through the TCI state to be 1, and the QCL type is QCL type D, then the receiving beam used by the terminal to receive the signal to be transmitted is the same as the reference signal with the receiving identifier of 1. The signals use the same receive beam.
  • the network device configures the identification of the reference signal that is quasi-co-located with the reference signal to be transmitted through the TCI state to 1, and the QCL type is type A, type B or type C
  • the terminal can assume that the reference signal to be transmitted is the same as the reference signal with the identification of 1.
  • the reference signal has the same large-scale channel parameters, and the large-scale channel parameters can be determined by the QCL type in the TCI state.
  • the TCI state may be configured for a control resource set (CORESET).
  • CORESET may include one or more search spaces, and one search space may correspond to at least one CORESET. That is, the terminal equipment can receive PDCCH on CORESET. The terminal equipment can determine the TCI status corresponding to the PDCCH according to the CORESET where the PDCCH is located.
  • Network devices can configure TCI status in different ways.
  • the following examples illustrate three TCI status configuration methods. It can be understood that the way of configuring the TCI state may be related to the type of the reference signal indicated by the TCI state. For different reference signal types, the TCI status can be obtained in different situations to obtain the QCL information of the reference signal.
  • Method 1 Configure the TCI status through radio resource control (RRC) signaling.
  • RRC radio resource control
  • the QCL information of periodic CSI-RS/TRS can be configured through RRC signaling.
  • Method 2 Through RRC configuration, the TCI state is activated by medium access control control element (MAC-CE) signaling.
  • MAC-CE medium access control control element
  • QCL information of periodic channel state information measurement reference signal (channel state information reference signal CSI-RS)/tracking reference signal (Tracking Reference Signal, TRS) or DMRS of PDCCH can indicate activation and deactivation through MAC-CE.
  • Method 3 Through RRC configuration, it is activated by MAC-CE, and uses downlink control information (Downlink Control Information, DCI) to indicate the TCI status. That is to say, in this way, you can go through three steps of RRC configuration, MAC-CE activation and DCI indication to configure the TCI state.
  • the DCI may include a TCI status indication field (TCI domain for short) to indicate the TCI status. For example, QCL information of aperiodic CSI-RS/TRS or DMRS of PDSCH can be obtained in this way.
  • the following takes the NG system R15/16 standard as an example to illustrate the method of obtaining the QCL information of the DMRS pilot of the PDSCH based on method three.
  • the method may include steps S110 to S140.
  • Step S110 The network device configures M TCI states through RRC signaling.
  • M can be an integer greater than 0, and the value of M can be determined according to the capabilities of the terminal device.
  • the network device can select up to 8 TCI states (corresponding to the 3-bit TCI domain in DCI) through MAC-CE.
  • TCI status can directly correspond to the TCI field in the DCI.
  • MAC-CE signaling is used to configure the TCI status table for CORESET, and the TCI status table includes the TCI status selected by MAC-CE signaling.
  • Step S130 The network device sends DCI to the terminal device.
  • Step S140 The terminal device determines the TCI status based on the DCI.
  • the terminal device can obtain the QCL information according to the TCI field in the DCI and the TCI status table of CORESET. On the contrary, the terminal can obtain QCL information (that is, the default QCL reference) based on the TCI status corresponding to the CORESET with the lowest ID that occurred last time.
  • the TCI status corresponding to the CORESET with the lowest ID number in the most recent scheduling slot containing CORESET determines the QCL information.
  • the TCI status can be dynamically indicated by DCI.
  • the TCI state (such as the receiving beam of PDSCH) does not need to change frequently. Therefore, in some communication protocols (such as NG R17 protocol), a unified TCI state architecture is introduced.
  • the beam management mechanism based on the unified TCI status framework mainly includes the following two technical features: the beam indication of all uplink and downlink channels and reference signals can be implemented using the unified concept of TCI status; the terminal equipment's proprietary PDCCH, The transmission beams of the PDSCH, PUSCH and PUCCH channels are unified into the same TCI state, so that the transmission of these channels can always use the same beam. Under the unified TCI status framework, a single beam indication signaling can be used to indicate the unified TCI status used by the above-mentioned channels. In order to support a unified TCI state architecture, some communication protocols (such as the NR R17 protocol) also introduce 3 CORESETs, namely CORESET A, CORESET B and CORESET C.
  • the search space associated with CORESET A is used to transmit PDCCH dedicated to terminal equipment.
  • the search space associated with CORESET B is only used for non-terminal device-specific PDCCH transmission (such as CSS other than Type 3).
  • the search space associated with CORESET C there are PDCCHs dedicated to terminal equipment and public PDCCHs.
  • CORESET B and CORESET C they can work according to the unified TCI status architecture, or they can not work according to the unified TCI status architecture.
  • the network device can configure CORESET B and/or CORESET C through RRC signaling whether to work according to the unified TCI state architecture (for NG systems, that is, in accordance with the regulations of R17 and later).
  • the uplink signal and/or downlink channel sent by the CORESET can be transmitted based on the same TCI state.
  • the TCI status indicated by the unified TCI status architecture can be used to provide a common QCL information for the terminal device-specific PDSCH and all or part of the CORESET, the terminal device-specific PDCCH and the PDSCH scheduled through the PDCCH.
  • the same QCL information can be used.
  • the TCI status can reuse the TCI field in DCI format 1_1 or DCI format 1_2 for indication.
  • the unified TCI status architecture has differences in the resolution of the TCI domain.
  • a CORESET operating in accordance with a unified TCI state architecture (such as CORESET A or CORESSET B/C configured to operate in a unified TCI state architecture)
  • the indicated TCI state e.g., beam
  • the effective time of this new TCI state is Y symbols (symbols) after sending a positive acknowledgment (ACK) of the new TCI state.
  • ACK positive acknowledgment
  • USS-specific CORESETs can be grouped. All CORESETs in the same CORESET group can adopt the same TCI state. Different CORESET groups can adopt different TCI states. For example, the first CORESET may belong to the first CORESET group, the second CORESET may belong to the second CORESET group, and the third CORESET may belong to the first CORESET group.
  • the first CORESET and the third CORESST can adopt the same TCI state; the TCI state of the first CORESET can be different from the TCI state of the second CORESET; the TCI state of the third CORESET can be different from the TCI state of the second CORESET. different.
  • the repeatedly transmitted PDCCHs may be candidate PDCCHs in multiple different search spaces. Different search spaces can be associated with different CORESETs. Whether different CORESETs work according to a unified TCI status architecture may be different. Alternatively, CORESETs working according to a unified TCI status architecture belong to different CORESET groups. Different CORESET groups may have different TCI states, that is, repeatedly transmitted PDCCHs may be transmitted through TRPs with different TCI states.
  • the description is provided by taking the first PDCCH and the second PDCCH as repeatedly transmitted PDCCHs, and the repeatedly transmitted PDCCH schedules the first signal.
  • the first PDCCH may be a candidate PDCCH of the first search space
  • the second PDCCH may be a candidate PDCCH of the second search space.
  • the first search space and the second search space may be associated with the first CORESET and the second CORESET respectively.
  • the first CORESET can work according to the unified TCI state architecture. If the second CORESET does not work according to a unified TCI state architecture, the TCI states of the first CORESET and the second CORESET may be different.
  • both the first CORESET and the second CORESET work according to a unified TCI state architecture, and the TCI states of the first CORESET and the second CORESET may be different.
  • the first CORERSET and the second CORERSET belong to different CORESET groups.
  • the TCI states of different CORESET groups are different, the TCI states of the first CORESET and the second CORESET will also be different.
  • the repeatedly transmitted PDCCH may schedule the first signal.
  • the first information (eg, QCL information) may be determined according to the TCI state (for convenience of description, this application is called the target TCI state).
  • the network device and/or the terminal device can implement accurate transmission of the first signal according to the first information.
  • the repeatedly transmitted PDCCH is transmitted through multiple CORESETs. If the TCI status of multiple CORESETs is different, or the TCI status indicated by the TCI field in the repeatedly transmitted PDCCH is different from the TCI status of the CORESET, it is difficult to determine the target TCI status. Therefore, the first information cannot be determined, and the first signal cannot be accurately transmitted.
  • FIGS 2 and 3 are respectively schematic flow charts of a communication method provided by embodiments of the present application.
  • the method shown in Figure 2 can be executed by a terminal device.
  • the method shown in Figure 3 can be executed by terminal devices and network devices.
  • the method shown in Figure 2 may include steps S210 and S220.
  • the method shown in Figure 3 may include step S310.
  • Step S210 The terminal device receives the first PDCCH.
  • the first PDCCH may belong to a repeatedly transmitted PDCCH.
  • the repeatedly transmitted PDCCH may include a first PDCCH and a second PDCCH.
  • the repeatedly transmitted PDCCH may be a candidate PDCCH of the first search space and the second search space.
  • the first PDCCH may be a candidate PDCCH of the first search space
  • the second PDCCH may be a candidate PDCCH of the second search space.
  • the first search space is associated with the first CORESET
  • the second search space may be associated with the second CORESET.
  • the terminal device may receive all of the repeatedly transmitted PDCCHs. For example, the terminal device may receive the first PDCCH and the second PDCCH. In some cases, for example, if the terminal device fails to receive part of the repeatedly transmitted PDCCH due to some reasons, the terminal device may receive part of the repeatedly transmitted PDCCH. For example, the terminal equipment may receive only one PDCCH among the repeatedly transmitted PDCCHs (for example, the received one PDCCH may be called the first PDCCH). It can be understood that, in the above situation, the terminal equipment can determine that the received PDCCH is a repeatedly transmitted PDCCH.
  • At least one CORESET among the first CORESET and the second CORESET operates according to a unified TCI state architecture.
  • the first CORESET may work according to a unified TCI state structure
  • the second CORESET may not work according to a unified TCI state structure.
  • both the first CORESET and the second CORESET can work according to a unified TCI state architecture.
  • the second CORESET may be CORESET B or CORESET C that is not configured to operate in accordance with the unified TCI state architecture.
  • the first CORESET or the second CORESET may be CORESET A or CORESET B configured to operate according to the unified TCI state architecture.
  • CORESET C Whether the first CORESET or the second CORESET works according to the unified TCI state architecture can be configured through high-level signaling.
  • the first CORESET and the second CORESET may be respectively configured with different TCI states.
  • the first CORESET and the second CORESET both working according to a unified TCI status architecture can belong to different CORESET groups, and different CORESET groups can be configured with different TCI statuses according to the unified TCI status architecture. .
  • the first PDCCH may be sent by the network device. As shown in Figure 3, in step S310, the network device may send the first PDCCH to the terminal device.
  • the second PDCCH may be sent by the network device that sent the first PDCCH, or may be sent by other network devices.
  • the network device that sends the first PDCCH may be the first network device.
  • the first network device may send the second PDCCH. That is to say, both the TRP transmitting the first PDCCH and the TRP transmitting the second PDCCH may belong to the first network device.
  • a second network device different from the first network device may send the second PDCCH.
  • the TRP transmitting the first PDCCH may belong to the first network device, and the TRP transmitting the second PDCCH may belong to the second network device.
  • the repeatedly transmitted PDCCH may be used to schedule the first signal. It can be understood that the repeatedly transmitted PDCCH may include multiple PDCCHs, and the multiple PDCCHs may include a first PDCCH and a second PDCCH. Wherein, multiple PDCCHs can all schedule the first signal.
  • the first signal may be any signal scheduled by the PDCCH for repeated transmission, and this application does not limit this.
  • the first signal may include PDSCH, physical uplink shared channel (PUSCH), sounding reference signal (SRS), physical uplink control channel (PUCCH) or aperiodic CSI- RS.
  • the first signal may be PDSCH or CSI-RS transmitted based on a single TCI state; PUSCH, PUCCH or SRS transmitted based on a single set of power control parameters; or PUSCH, PUCCH or SRS transmitted by a single air domain filter.
  • spatial filters may be related to uplink beam filtering information.
  • the terminal device may receive or send a first signal according to the first information.
  • the terminal device can send the first signal.
  • the terminal can receive the first signal.
  • the terminal device may interact with a network device that sends a first PDCCH (eg, a first network device) or a network device that sends a second PDCCH (eg, a first network device) to send or receive the first signal. That is to say, the terminal device can send the first signal to the first network device or receive the first signal from the first network device; or the terminal device can send the first signal to the second network device or receive the first signal from the second network device. Second signal. It should be noted that the network device that sends the first PDCCH may be the same as or different from the network device that sends the second PDCCH, and this application does not limit this.
  • the first information may include, for example, QCL information for demodulating the first signal and/or an uplink transmission spatial relationship indication or an uplink power control parameter indication for transmitting the first signal.
  • the first information may be one or more reference symbols included in the target TCI state, and the reference symbols are used to indicate QCL information of the first signal.
  • the first information may include QCL information used to demodulate the first signal.
  • the first information may include an uplink transmission spatial relationship indication or an uplink power control parameter indication for transmitting the first signal.
  • the first information may include QCL information used for PDSCH demodulation.
  • the first information may include an uplink transmission spatial relationship indication for transmitting the PUCCH.
  • the first information may be determined based on the target TCI.
  • the target TCI state contains or is associated with the first information.
  • the target TCI state may be determined based on the second signal.
  • the target TCI state may be determined based on the transmission time of the second signal.
  • the second signal may be, for example, at least one of the repeatedly transmitted PDCCH and the first signal.
  • the second signal may be one or more of the first PDCCH, the second PDCCH and the first signal.
  • the second signal may be a reference PDCCH.
  • the reference PDCCH may be one of the repeatedly transmitted PDCCHs. This application does not limit the determination method with reference to PDCCH.
  • the reference PDCCH may be a PDCCH that satisfies one of the following conditions among repeatedly transmitted PDCCHs: the PDCCH with the earliest transmission start time; the PDCCH with the latest transmission start time; the PDCCH with the earliest transmission end time; and the latest transmission end time.
  • the second signal may be the first PDCCH and/or the second PDCCH.
  • the second signal may be the first signal.
  • This application determines the target TCI status through the second signal, so that the first information can be determined based on the target TCI status, thereby allowing the terminal device to accurately transmit the first signal based on the first information.
  • the target TCI state may be the first TCI state or the second TCI state.
  • the first TCI state is the TCI state currently in effect of the first CORESET
  • the second TCI state is the TCI state currently in effect of the second CORESET.
  • the TCI state that takes effect before the second signal is transmitted and whose effective time is closest to the second signal transmission time may be the first TCI state.
  • the TCI state that is effective before the second signal transmission and whose effective time is closest to the second signal transmission time may be the second TCI state.
  • the second information may include one or more of the following information: the identification (ID) of the first CORESET and/or the identification of the second CORESET; the identification of the first search space and/or the identification of the second search space; The identifier of the TCI state and/or the identifier of the second TCI state; the identifier of the first CORESET group to which the first CORESET belongs and/or the identifier of the second CORESET group to which the second CORESET belongs.
  • ID the identification
  • the second information may include one or more of the following information: the identification (ID) of the first CORESET and/or the identification of the second CORESET; the identification of the first search space and/or the identification of the second search space; The identifier of the TCI state and/or the identifier of the second TCI state; the identifier of the first CORESET group to which the first CORESET belongs and/or the identifier of the second CORESET group to which the second CORESET belongs.
  • the second information may be preset, for example, specified through a communication protocol.
  • the second information may be configured by the network device, for example, through high-layer signaling and/or physical layer signaling.
  • the physical layer signaling may be a PDCCH that schedules the first signal, for example, one of the PDCCHs that are repeatedly transmitted.
  • the high-layer signaling may include, for example, RRC signaling and/or MAC-CE signaling.
  • the second information is the identification of the first CORESET or the second CORESET.
  • the network device may configure the second information to be the identifier of the first CORESET through high-level signaling or physical layer signaling, and the terminal device may determine that the target TCI state is the first TCI state corresponding to the first CORESET.
  • the network device may configure the second information as the identifier of the second CORESET through high-layer signaling or physical layer signaling, and the terminal device may determine that the target TCI state is the second TCI state corresponding to the second CORESET.
  • the first condition can be determined.
  • the target TCI state may be determined to be the first TCI state.
  • the first condition may include, for example, one or more of the following conditions: the identity of the first CORESET is the larger of the identities of the first CORESET and the second CORESET, that is, the identity of the first CORESET is greater than the identity of the second CORESET;
  • the identifier of a CORESET is the smaller of the identifiers of the first CORESET and the second CORESET, that is, the identifier of the first CORESET is smaller than the identifier of the second CORESET;
  • the identifier of the first search space is the identifier of the first search space and the second search space.
  • the identifier of the first TCI state is the larger of the identifiers of the first TCI state and the second TCI state, that is, the identifier of the first TCI state is greater than the identifier of the second TCI state;
  • the identifier of the first TCI state The identifier is the smaller of the identifiers of the first TCI state and the second TCI state, that is, the identifier of the first TCI state is smaller than the identifier of the second TCI state;
  • the identifier of the first CORESET group is the first CORESET group and the second CORESET group
  • the larger of the identifiers, that is, the identifier of the first CORESET group is greater than the identifier of the second CORESET group;
  • the identifier of the first CORESET group is the smaller of the identifiers of the first CORESET group and the second CORESET group, that is, the first CORESET group
  • the identifier is smaller than the identifier of the second search
  • the target TCI state can be determined to be the second TCI state: the identifier of the second CORESET is the identifier of the first CORESET and the second CORESET
  • the identifier of the second CORESET is the smaller one of the identifiers of the first CORESET and the second CORESET; the identifier of the second search space is the larger identifier of the first search space and the second search space; the identifier of the second CORESET is the larger one of the identifiers of the first CORESET and the second CORESET.
  • the identifier of the search space is the smaller of the identifiers of the first search space and the second search space;
  • the identifier of the second TCI state is the larger of the identifiers of the first TCI state and the second TCI state;
  • the identifier of the second TCI state is is the smaller of the identifiers of the first TCI state and the second TCI state;
  • the identifier of the second CORESET group is the larger of the identifiers of the first CORESET group and the second CORESET group; and, the identifier of the second CORESET group is the larger The smaller of the ID of the first CORESET group and the second CORESET group.
  • the target TCI state can satisfy one or more of the following conditions: the TCI state corresponding to the CORESET with a larger or smaller ID in the first CORESET and the second CORESET; the first search space and the second search space.
  • the first condition may be preset, for example, specified through a communication protocol.
  • the first condition may be configured by the network device, for example through high-layer signaling and/or physical layer signaling.
  • the physical layer signaling may be a PDCCH that schedules the first signal, for example, one of the PDCCHs that are repeatedly transmitted.
  • the high-layer signaling may include, for example, RRC signaling and/or MAC-CE signaling.
  • the second information includes the identification of the first CORESET group and/or the second CORESET group.
  • the first condition may be preset or configured through signaling (including high-layer signaling and/or physical layer signaling). For example, it may be preset or configured that when the identifier of the first CORESET group is smaller among the identifiers of the first CORESET group and the second CORESET group, the target TCI state is determined to be the first TCI state.
  • the determination of the target TCI state may be related to whether the first CORESET and the second CORESET work according to a unified TCI state structure.
  • the method proposed by this application for determining the target TCI state based on the second signal will be introduced below according to different situations.
  • both the first CORESET and the second CORESET work according to a unified TCI state architecture.
  • the first CORESET and the second CORESET may belong to different CORESET groups respectively.
  • the target TCI state may be determined based on one or more of the effective time of the TCI state of the first CORESET, the effective time of the TCI state of the second CORESET, and the transmission time of the second signal. For example, among the TCI states of the first CORESET, the TCI state that takes effect before the second signal is transmitted and whose effective time is closest to the second signal transmission time may be the third TCI state. Among the TCI states of the second CORESET, the TCI state that takes effect before the second signal is transmitted and whose effective time is closest to the second signal transmission time may be the fourth TCI state. The target TCI state may be determined based on the third TCI state and/or the fourth TCI state.
  • the target TCI state may be one of the third TCI state or the fourth TCI state.
  • the target TCI state may be the TCI state whose effective time is closest to the transmission time of the second signal among the third TCI state and the fourth TCI state.
  • Both the first CORESET and the second CORESET work according to a unified TCI status architecture.
  • Search space 1 (hereinafter abbreviated as SS1) and search space 2 (hereinafter abbreviated as SS2) are associated with the first CORESET
  • search space 3 (hereinafter abbreviated as SS3) and search space 4 (hereinafter abbreviated as SS4) are associated with the second CORESET.
  • SS1 and SS3 are associated search spaces, that is, candidate PDCCHs in SS1 and SS3 can be used for repeated transmission of PDCCH.
  • SS2 and SS4 are used for independent PDCCH transmission.
  • the network device sent PDCCH1 over SS2.
  • PDCCH1 indicates the TCI status of the first CORESET (eg, the beam of the first CORESET).
  • the network device sends PDCCH2 through SS4, and PDCCH2 indicates the TCI status of the second CORESET (eg, the beam of the second CORESET).
  • the network device sends the first PDCCH (denoted as PDCCH3) and the second PDCCH (denoted as PDCCH4) through SS1 and SS3 respectively.
  • PDCCH3 and PDCCH4 are repeatedly transmitted PDCCHs.
  • the repeatedly transmitted PDCCH can be used to schedule the PDSCH corresponding to a single TCI state. Among them, the TCI state indicated by the repeatedly transmitted PDCCH is the TCI state used for CORESET1.
  • the TCI status indicated by the repeatedly transmitted PDCCH may take effect after the transmission time of the repeatedly transmitted PDCCH.
  • the effective time of the TCI state indicated by PDCCH1 is before PDCCH3 and PDCCH4.
  • the effective time of the TCI state indicated by PDCCH2 is also before PDCCH3 and PDCCH4, but after the effective time of the TCI state indicated by PDCCH1.
  • the third TCI state may be the TCI state of the first CORESET indicated by PDCCH1
  • the fourth TCI state may be the TCI state of the second CORESET indicated by PDCCH2.
  • the most recently effective TCI state before PDCCH3 may be the TCI state of the second CORESET indicated by PDCCH2.
  • the terminal equipment may determine that the TCI state of the PDSCH corresponding to the single TCI state is the fourth TCI state.
  • the third TCI state may be the TCI state of the first CORESET indicated by PDCCH1
  • the fourth TCI state may be the TCI state of the second CORESET indicated by PDCCH2.
  • the effective time of the third TCI state, and the effective time of the fourth TCI state the most recently effective TCI state before PDCCH4 may be the TCI state of the second CORESET indicated by PDCCH2.
  • the terminal equipment may determine that the TCI state of the PDSCH corresponding to the single TCI state is the fourth TCI state.
  • first CORESET and the second CORESET may belong to different CORESET groups.
  • Both the first CORESET and the second CORESET work according to a unified TCI status architecture.
  • SS1 and SS2 are associated with the first CORESET, and SS3 and SS4 are associated with the second CORESET.
  • SS1 and SS3 are associated search spaces, that is, candidate PDCCHs in SS1 and SS3 can be used for repeated transmission of PDCCH.
  • SS2 and SS4 are used for independent PDCCH transmission.
  • the network device sent PDCCH1 over SS2.
  • PDCCH1 indicates the TCI status of the first CORESET (eg, the beam of the first CORESET).
  • the network device sends PDCCH2 through SS4, and PDCCH2 indicates the TCI status of the second CORESET (eg, the beam of the second CORESET).
  • the network device sends the first PDCCH (denoted as PDCCH3) and the second PDCCH (denoted as PDCCH4) through SS1 and SS3 respectively.
  • PDCCH3 and PDCCH4 are repeatedly transmitted PDCCHs.
  • the repeatedly transmitted PDCCH can be used to schedule the PDSCH corresponding to a single TCI state. Among them, the TCI state indicated by the repeatedly transmitted PDCCH is the TCI state used for CORESET1.
  • the TCI status indicated by the repeatedly transmitted PDCCH may take effect after the transmission time of the repeatedly transmitted PDCCH.
  • the effective time of the TCI state indicated by PDCCH1 is before PDCCH3 and PDCCH4.
  • the effective time of the TCI state indicated by PDCCH2 is after the effective time of the TCI state indicated by PDCCH1, after PDCCH3 and before PDCCH4.
  • the third TCI state can be the TCI state of the first CORESET indicated by PDCCH1
  • the fourth TCI state can be the second TCI state.
  • CORESET The TCI state in effect before the third TCI state.
  • the most recently effective TCI state before PDCCH3 may be the TCI state of the first CORESET indicated by PDCCH1.
  • the terminal equipment may determine that the TCI state of the PDSCH corresponding to the single TCI state is the third TCI state.
  • the third TCI state can be the TCI state of the first CORESET indicated by PDCCH1
  • the fourth TCI state can be the TCI state indicated by PDCCH2
  • the TCI status of the second CORESET According to the transmission time of PDCCH4, the effective time of the third TCI state, and the effective time of the fourth TCI state, the most recently effective TCI state before PDCCH4 may be the TCI state of the second CORESET indicated by PDCCH2.
  • the terminal equipment may determine that the TCI state of the PDSCH corresponding to the single TCI state is the fourth TCI state.
  • the target TCI state may be determined based on the third information.
  • the third information may include one or more of the following information: the identification of the first CORESET and/or the identification of the second CORESET; the identification of the first search space and/or the identification of the second search space; the third TCI state and /or the identifier of the fourth TCI state; the identifier of the first CORESET group to which the first CORESET belongs and/or the identifier of the second CORESET group to which the second CORESET belongs.
  • the third information may be used to determine the second condition. If the third TCI state satisfies the second condition, the target TCI state is the third TCI state.
  • the second condition may include one or more of the following conditions: the identity of the first CORESET is the larger of the identities of the first CORESET and the second CORESET; the identity of the first CORESET is the identity of the first CORESET and the second CORESET.
  • the identifier of the first search space is the larger of the identifiers of the first search space and the second search space; the identifier of the first search space is the smaller of the identifiers of the first search space and the second search space.
  • the third information and/or the second condition are preset, or the third information and/or the second condition are configured through high-layer signaling and/or physical layer signaling.
  • the physical layer signaling may be repeatedly transmitted PDCCH.
  • the first COERSET may work according to a unified TCI state structure, but the second COERSET does not work according to a unified TCI state structure.
  • the CORESET that does not work according to the unified TCI architecture can be CORESET B or CORESET C.
  • the target TCI state may be determined according to a method according to the unified TCI state architecture. Taking the first CORESET working according to a unified TCI status architecture as an example, the target TCI status may be related to the TCI status of the first CORESET. For example, the target TCI state may be determined based on the transmission time of the second signal and the effective time of the TCI state of the first CORESET. As an implementation manner, the target TCI state may be determined as the fifth TCI state. The fifth TCI state may be, among the TCI states of the first CORESET, the TCI state that takes effect before the second signal transmission and whose effective time is closest to the second signal transmission time.
  • the target TCI state may be determined according to a method that does not follow a unified TCI state architecture.
  • the target TCI status may be determined based on the value of the TCI status indication field carried in the repeatedly transmitted PDCCH.
  • the target TCI state may be determined based on the TCI state indication field in the repeatedly transmitted PDCCH and the TCI state table configured by the second CORESET. If the transmission time interval between the second PDCCH and the first signal is less than the first threshold, the target TCI state is determined based on the TCI state of the target CORESET.
  • the target CORESET may be the CORESET with the smallest identification number among the most recent CORESETs in the scheduling time slot containing the second CORESET; or, the target CORESET may be the most recent unidentified TCI in the scheduling time slot containing the second CORESET.
  • the first threshold can be configured through high-layer signaling.
  • the first threshold may be indicated by a parameter in higher layer signaling.
  • FIG. 4 is a schematic structural diagram of a terminal device 400 provided by an embodiment of the present application.
  • the terminal device 400 may include a first receiving unit 410 and a transmitting unit 420.
  • the first receiving unit 410 is configured to receive the first physical downlink control channel PDCCH.
  • the first PDCCH belongs to the repeatedly transmitted PDCCH.
  • the repeatedly transmitted PDCCH is used to schedule the first signal.
  • the repeatedly transmitted PDCCH is the first The candidate PDCCH of the search space and the second search space, the first search space is associated with the first control resource set CORESET, the second search space is associated with the second control resource set CORESET, the first CORESET and the third At least one CORESET among the two CORESETs works according to a unified TCI state architecture;
  • Transmitting unit 420 configured to receive or send the first signal according to first information, wherein the first information is determined based on a target TCI state, the target TCI state is determined based on a second signal, and the second signal is At least one of the repeatedly transmitted PDCCH and the first signal.
  • the repeatedly transmitted PDCCH also includes a second PDCCH
  • the first PDCCH is a candidate PDCCH of the first search space
  • the second PDCCH is a candidate PDCCH of the second search space
  • the The terminal device 400 may further include a second receiving unit.
  • the second receiving unit may be configured to receive the second PDCCH.
  • the target TCI state is determined according to the second signal, including: the target TCI state is determined as the first TCI state or the second TCI state according to the second signal; wherein the first TCI state is the The TCI status currently in effect of the first CORESET is the TCI status currently in effect in the second CORESET, and the second TCI status is the TCI status currently in effect in the second CORESET.
  • the TCI state that takes effect before the second signal transmission and whose effective time is closest to the second signal transmission time is the first TCI state;
  • the TCI state that takes effect before the second signal is transmitted and whose effective time is closest to the second signal transmission time is the second TCI state.
  • the target TCI state is determined based on second information
  • the second information includes one or more of the following information: the identification of the first CORESET and/or the identification of the second CORESET; The identifier of the first search space and/or the identifier of the second search space; the identifier of the first TCI state and/or the identifier of the second TCI state; the first CORESET group to which the first CORESET belongs. The identifier and/or the identifier of the second CORESET group to which the second CORESET belongs. All CORESETs in the same CORESET group adopt the same TCI state, and different CORESET groups adopt different TCI states.
  • the second information is preset, or the second information is configured through high-layer signaling and/or physical layer signaling.
  • determining the target TCI state based on second information includes: the second information is used to determine a first condition, and when the first TCI state meets the first condition, the target TCI state is the The first TCI state, the first condition includes one or more of the following conditions: the identifier of the first CORESET is greater than the identifier of the second CORESET; the identifier of the first CORESET is smaller than the identifier of the second CORESET The identifier of CORESET; the identifier of the first search space is greater than the identifier of the second search space; the identifier of the first search space is smaller than the identifier of the second search space; the identifier of the first TCI state is greater than the identifier of the second search space.
  • the identifier of the two TCI states is smaller than the identifier of the second TCI state; the identifier of the first CORESET group is greater than the identifier of the second CORESET group; the identifier of the first CORESET group Less than the identifier of the second CORESET group.
  • the first condition is preset, or the first condition is configured through high-layer signaling and/or physical layer signaling.
  • the physical layer signaling is the repeatedly transmitted PDCCH.
  • both the first CORESET and the second CORESET work according to a unified TCI status architecture, and the target TCI status is determined based on the second signal, including: the target TCI status is determined based on the second signal.
  • the transmission time of the signal, the effective time of the TCI state of the first CORESET, and the effective time of the TCI state of the second CORESET are determined.
  • the TCI state that takes effect before the transmission of the second signal and has an effective time closest to the transmission time of the second signal is the third TCI state;
  • the second Among the TCI states of CORESET the TCI state that takes effect before the second signal is transmitted and whose effective time is closest to the transmission time of the second signal is the fourth TCI state;
  • the target TCI state is based on the second signal.
  • the target TCI state is determined based on third information, and the third information includes one or more of the following information: : The identifier of the first CORESET and/or the identifier of the second CORESET; the identifier of the first search space and/or the identifier of the second search space; the identifier of the first TCI state and/or The identifier of the second TCI state; the identifier of the first CORESET group to which the first CORESET belongs and/or the identifier of the second CORESET group to which the second CORESET belongs. All CORESETs in the same CORESET group use the same TCI status, different CORESET groups adopt different TCI status.
  • determining the target TCI state based on third information includes: the third information is used to determine a second condition, and when the third TCI state meets the second condition, the target TCI state is the third TCI state; wherein the second condition includes one or more of the following conditions: the identifier of the first CORESET is greater than the identifier of the second CORESET; the identifier of the first CORESET is smaller than The identifier of the second CORESET; the identifier of the first search space is greater than the identifier of the second search space; the identifier of the first search space is smaller than the identifier of the second search space; the identifier of the third TCI state The identifier is greater than the identifier of the fourth TCI state; the identifier of the third TCI state is smaller than the identifier of the fourth TCI state; the identifier of the first CORESET group is greater than the identifier of the second CORESET group; the identifier of the third TCI state is greater than the identifier of the second
  • the second condition is preset, or the second condition is configured through high-layer signaling and/or physical layer signaling.
  • the physical layer signaling is the repeatedly transmitted PDCCH.
  • the first CORESET works according to a unified TCI status architecture
  • the second CORESET does not work according to a unified TCI status architecture
  • the target TCI status is determined based on the second signal, including:
  • the target TCI state is determined based on the transmission time of the second signal and the effective time of the TCI state of the first CORESET.
  • the target TCI state is determined based on the transmission time of the second signal and the effective time of the TCI state of the first CORESET, including: the target TCI state is a fifth TCI state, and the fifth TCI The state is, among the TCI states of the first CORESET, the TCI state that takes effect before the second signal transmission and whose effective time is closest to the second signal transmission time.
  • the first CORESET works according to a unified TCI status architecture
  • the second CORESET does not work according to a unified TCI status architecture
  • the target TCI status is determined based on the second signal, including:
  • the target TCI status is determined based on the value of the TCI status indication field carried in the repeatedly transmitted PDCCH.
  • the target TCI state is based on the value of the TCI state indication field carried in the repeatedly transmitted PDCCH, including: if the transmission time interval between the second PDCCH and the first signal is greater than or equal to The first threshold, the target TCI state is determined based on the TCI state indication field in the repeatedly transmitted PDCCH and the TCI state table of the second CORESET configuration; if the link between the second PDCCH and the first signal The transmission time interval is less than the first threshold, and the target TCI state is determined based on the TCI state of the target CORESET; wherein the target CORESET is the identifier of the most recent CORESET in the scheduling time slot containing the second CORESET.
  • the CORESET with the smallest number; or, the target CORESET is the CORESET with the smallest identification number among the most recent CORESETs that are not configured with a unified TCI state in the scheduling time slot containing the second CORESET.
  • the second signal is a reference signal in the repeatedly transmitted PDCCH
  • the reference PDCCH is a PDCCH in the repeatedly transmitted PDCCH that meets one of the following conditions: the PDCCH with the earliest transmission start time; The PDCCH with the latest transmission start time; the PDCCH with the earliest transmission end time; the PDCCH with the latest transmission end time.
  • the first signal is one of the physical downlink shared channel PDSCH, the physical uplink shared channel PUSCH, the sounding reference signal SRS, the physical uplink control channel PUCCH, and the aperiodic channel state information measurement reference signal CSI-RS.
  • the first CORESET and the second CORESET are respectively configured with different TCI states.
  • the first signal is: PDSCH or CSI-RS transmitted based on a single TCI state; PUSCH, PUCCH or SRS transmitted by a single set of power control parameters; or PUSCH, PUCCH or SRS transmitted by a single upper air domain filter .
  • the target TCI status includes or is associated with the first information.
  • the first information when the first signal is a downlink signal, includes quasi-co-located QCL information used to demodulate the first signal; or when the first signal is an uplink signal.
  • the first information includes an uplink transmission spatial relationship indication or an uplink power control parameter indication for transmitting the first signal.
  • FIG. 5 is a schematic structural diagram of a network device 500 provided by an embodiment of the present application.
  • the network device 500 may include a first sending unit 510.
  • the first sending unit 510 is configured to send a first physical downlink control channel PDCCH.
  • the first PDCCH belongs to a repeatedly transmitted PDCCH.
  • the repeatedly transmitted PDCCH also includes a second PDCCH.
  • the repeatedly transmitted PDCCH is used for scheduling the third PDCCH.
  • the first PDCCH is a candidate PDCCH of the first search space
  • the second PDCCH is a candidate PDCCH of the second search space
  • the first search space is associated with the first control resource set CORESET
  • the second The search space is associated with a second control resource set CORESET, and at least one CORESET among the first CORESET and the second CORESET operates according to a unified transmission configuration indicating TCI state architecture; wherein the reception or transmission of the first signal Implemented based on the first information, the first information is determined based on the target TCI state, the target TCI state is determined based on the second signal, the second signal is the repeatedly transmitted PDCCH and the first signal. At least one.
  • the target TCI state is determined according to the second signal, including: the target TCI state is determined as the first TCI state or the second TCI state according to the second signal; wherein the first TCI state is the The TCI status currently in effect of the first CORESET is the TCI status currently in effect in the second CORESET, and the second TCI status is the TCI status currently in effect in the second CORESET.
  • the TCI state that takes effect before the second signal transmission and whose effective time is closest to the second signal transmission time is the TCI state; the second Among the TCI states of CORESET, the TCI state that takes effect before the second signal transmission and whose effective time is closest to the second signal transmission time is the second TCI state.
  • the target TCI state is determined based on second information
  • the second information includes one or more of the following information: the identification of the first CORESET and/or the identification of the second CORESET; The identifier of the first search space and/or the identifier of the second search space; the identifier of the first TCI state and/or the identifier of the second TCI state; the first CORESET group to which the first CORESET belongs. The identifier and/or the identifier of the second CORESET group to which the second CORESET belongs. All CORESETs in the same CORESET group adopt the same TCI state, and different CORESET groups adopt different TCI states.
  • the second information is preset, or the second information is configured through high-layer signaling and/or physical layer signaling.
  • determining the target TCI state based on second information includes: the second information is used to determine a first condition, and when the first TCI state meets the first condition, the target TCI state is the The first TCI state, the first condition includes one or more of the following conditions: the identifier of the first CORESET is greater than the identifier of the second CORESET; the identifier of the first CORESET is smaller than the identifier of the second CORESET The identifier of CORESET; the identifier of the first search space is greater than the identifier of the second search space; the identifier of the first search space is smaller than the identifier of the second search space; the identifier of the first TCI state is greater than the identifier of the second search space.
  • the identifier of the second TCI state; the identifier of the first TCI state is smaller than the identifier of the second TCI state; the identifier of the first CORESET group is greater than the identifier of the second CORESET group; the identifier of the first CORESET group The identifier is smaller than the identifier of the second CORESET group.
  • the first condition is preset, or the first condition is configured through high-layer signaling and/or physical layer signaling.
  • the physical layer signaling is the repeatedly transmitted PDCCH.
  • both the first CORESET and the second CORESET work according to a unified TCI status architecture, and the target TCI status is determined based on the second signal, including: the target TCI status is determined based on the second signal.
  • the transmission time of the signal, the effective time of the TCI state of the first CORESET, and the effective time of the TCI state of the second CORESET are determined.
  • the TCI state that takes effect before the transmission of the second signal and has an effective time closest to the transmission time of the second signal is the third TCI state;
  • the second Among the TCI states of CORESET the TCI state that takes effect before the second signal is transmitted and whose effective time is closest to the transmission time of the second signal is the fourth TCI state;
  • the target TCI state is based on the second signal.
  • the target TCI state is determined based on third information, and the third information includes one or more of the following information: : The identifier of the first CORESET and/or the identifier of the second CORESET; the identifier of the first search space and/or the identifier of the second search space; the identifier of the first TCI state and/or The identifier of the second TCI state; the identifier of the first CORESET group to which the first CORESET belongs and/or the identifier of the second CORESET group to which the second CORESET belongs. All CORESETs in the same CORESET group use the same TCI status, different CORESET groups adopt different TCI status.
  • determining the target TCI state based on third information includes: the third information is used to determine a second condition, and when the third TCI state meets the second condition, the target TCI state is the third TCI state; wherein the second condition includes one or more of the following conditions: the identifier of the first CORESET is greater than the identifier of the second CORESET; the identifier of the first CORESET is smaller than The identifier of the second CORESET; the identifier of the first search space is greater than the identifier of the second search space; the identifier of the first search space is smaller than the identifier of the second search space; the third TCI state The identifier is greater than the identifier of the second TCI state; the identifier of the third TCI state is smaller than the identifier of the second TCI state; the identifier of the first CORESET group is greater than the identifier of the second CORESET group; The identifier of the first CORESET group is smaller than the identifier of the second CORESET group
  • the second condition is preset, or the second condition is configured through high-layer signaling and/or physical layer signaling.
  • the physical layer signaling is the repeatedly transmitted PDCCH.
  • the first CORESET works according to a unified TCI status architecture
  • the second CORESET does not work according to a unified TCI status architecture
  • the target TCI status is determined based on the second signal, including:
  • the target TCI state is determined based on the transmission time of the second signal and the effective time of the TCI state of the first CORESET.
  • the target TCI state is determined based on the transmission time of the second signal and the effective time of the TCI state of the first CORESET, including: the target TCI state is a fifth TCI state, and the fifth TCI The state is, among the TCI states of the first CORESET, the TCI state that takes effect before the second signal transmission and whose effective time is closest to the second signal transmission time.
  • the first CORESET works according to a unified TCI status architecture
  • the second CORESET does not work according to a unified TCI status architecture
  • the target TCI status is determined based on the second signal, including:
  • the target TCI status is determined based on the value of the TCI status indication field carried in the repeatedly transmitted PDCCH.
  • the target TCI state is based on the value of the TCI state indication field carried in the repeatedly transmitted PDCCH, including: if the transmission time interval between the second PDCCH and the first signal is greater than or equal to The first threshold, the target TCI state is determined based on the TCI state indication field in the repeatedly transmitted PDCCH and the TCI state table of the second CORESET configuration; if the link between the second PDCCH and the first signal The transmission time interval is less than the first threshold, and the target TCI state is determined based on the TCI state of the target CORESET; wherein the target CORESET is the identifier of the most recent CORESET in the scheduling time slot containing the second CORESET.
  • the CORESET with the smallest number; or, the target CORESET is the CORESET with the smallest identification number among the most recent CORESETs that are not configured with a unified TCI state in the scheduling time slot containing the second CORESET.
  • the second signal is a reference signal in the repeatedly transmitted PDCCH
  • the reference PDCCH is a PDCCH in the repeatedly transmitted PDCCH that meets one of the following conditions: the PDCCH with the earliest transmission start time; The PDCCH with the latest transmission start time; the PDCCH with the earliest transmission end time; the PDCCH with the latest transmission end time.
  • the first signal is one of the physical downlink shared channel PDSCH, the physical uplink shared channel PUSCH, the sounding reference signal SRS, the physical uplink control channel PUCCH, and the aperiodic channel state information measurement reference signal CSI-RS.
  • the first CORESET and the second CORESET are respectively configured with different TCI states.
  • the first signal is: PDSCH or CSI-RS transmitted based on a single TCI state; PUSCH, PUCCH or SRS transmitted based on a single set of power control parameters; or PUSCH, PUCCH or SRS transmitted by a single air domain filter.
  • the target TCI status includes or is associated with the first information.
  • the first information when the first signal is a downlink signal, includes quasi-co-located QCL information used to demodulate the first signal; or when the first signal is an uplink signal.
  • the first information includes an uplink transmission spatial relationship indication or an uplink power control parameter indication for transmitting the first signal.
  • Figure 6 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the dashed line in Figure 6 indicates that the unit or module is optional.
  • the device 600 can be used to implement the method described in the above method embodiment.
  • Device 600 may be a chip, terminal device or network device.
  • Apparatus 600 may include one or more processors 610.
  • the processor 610 can support the device 600 to implement the method described in the foregoing method embodiments.
  • the processor 610 may be a general-purpose processor or a special-purpose processor.
  • the processor may be a central processing unit (CPU).
  • the processor can also be another general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), or an off-the-shelf programmable gate array (FPGA) Or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • 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, etc.
  • Apparatus 600 may also include one or more memories 620.
  • the memory 620 stores a program, which can be executed by the processor 610, so that the processor 610 executes the method described in the foregoing method embodiment.
  • the memory 620 may be independent of the processor 610 or integrated in the processor 610.
  • Apparatus 600 may also include a transceiver 630.
  • Processor 610 may communicate with other devices or chips through transceiver 630.
  • the processor 610 can transmit and receive data with other devices or chips through the transceiver 630 .
  • An embodiment of the present application also provides a computer-readable storage medium for storing a program.
  • the computer-readable storage medium can be applied in the terminal or network device provided by the embodiments of the present application, and the program causes the computer to execute the methods performed by the terminal or network device in various embodiments of the present application.
  • An embodiment of the present application also provides a computer program product.
  • the computer program product includes a program.
  • the computer program product can be applied in the terminal or network device provided by the embodiments of the present application, and the program causes the computer to execute the methods performed by the terminal or network device in various embodiments of the present application.
  • An embodiment of the present application also provides a computer program.
  • the computer program can be applied to the terminal or network device provided by the embodiments of the present application, and the computer program causes the computer to execute the methods performed by the terminal or network device in various embodiments of the present application.
  • the "instruction" mentioned may be a direct instruction, an indirect instruction, or an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation.
  • B corresponding to A means that B is associated with A, and B can be determined based on A.
  • determining B based on A does not mean determining B only based on A.
  • B can also be determined based on A and/or other information.
  • the term "correspondence” can mean that there is a direct correspondence or indirect correspondence between the two, or it can also mean that there is an association between the two, or it can also mean indicating and being instructed, configuring and being configured, etc. relation.
  • predefinition or “preconfiguration” can be achieved by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices).
  • devices for example, including terminal devices and network devices.
  • predefined can refer to what is defined in the protocol.
  • the "protocol” may refer to a standard protocol in the communication field, which may include, for example, LTE protocol, NR protocol, and related protocols applied in future communication systems. This application does not limit this.
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its functions and internal logic, and should not be determined by the implementation process of the embodiments of the present application. constitute any limitation.
  • the disclosed systems, devices and methods 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. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs (DVD)) or semiconductor media (e.g., solid state disks (SSD) )wait.
  • magnetic media e.g., floppy disks, hard disks, magnetic tapes
  • optical media e.g., digital video discs (DVD)
  • semiconductor media e.g., solid state disks (SSD)

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

Abstract

L'invention concerne un procédé de communication, un dispositif terminal, et un dispositif de réseau. Le procédé de communication comprend les étapes suivantes : un dispositif terminal reçoit un premier canal de commande de liaison descendante physique (PDCCH), le premier PDCCH représentant un PDCCH dans une transmission de répétition, le PDCCH dans une transmission de répétition étant utilisé pour planifier un premier signal, le PDCCH dans une transmission de répétition représentant un PDCCH candidat d'un premier espace de recherche et d'un second espace de recherche, le premier espace de recherche étant associé à un premier ensemble de ressources de commande (CORESET), le second espace de recherche étant associé à un second CORESET, et le premier CORESET et/ou le second CORESET fonctionnant selon une architecture d'état d'indicateur de configuration de transmission (TCI) unifié ; le dispositif terminal reçoit ou envoie un premier signal selon des premières informations, les premières informations étant déterminées sur la base d'un état TCI cible, l'état TCI cible étant déterminé selon un second signal, et le second signal représentant le PDCCH dans une transmission de répétition et/ou le premier signal. Selon la présente demande, l'état TCI cible est déterminé au moyen du second signal, de sorte que les premières informations puissent être déterminées, puis le premier signal peut être transmis avec précision.
PCT/CN2022/085052 2022-04-02 2022-04-02 Procédé de communication, dispositif terminal, et dispositif de réseau WO2023184536A1 (fr)

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CN113115444A (zh) * 2020-01-09 2021-07-13 维沃移动通信有限公司 一种pdcch配置方法及终端
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EP3930213A1 (fr) * 2019-02-21 2021-12-29 Ntt Docomo, Inc. Terminal utilisateur et procédé de communication sans fil
CN113115444A (zh) * 2020-01-09 2021-07-13 维沃移动通信有限公司 一种pdcch配置方法及终端
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