WO2022082462A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2022082462A1
WO2022082462A1 PCT/CN2020/122288 CN2020122288W WO2022082462A1 WO 2022082462 A1 WO2022082462 A1 WO 2022082462A1 CN 2020122288 W CN2020122288 W CN 2020122288W WO 2022082462 A1 WO2022082462 A1 WO 2022082462A1
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WIPO (PCT)
Prior art keywords
information
tci
qcl
carrier
terminal device
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PCT/CN2020/122288
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English (en)
Chinese (zh)
Inventor
袁世通
陈雷
刘凤威
樊波
张希
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华为技术有限公司
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Priority to PCT/CN2020/122288 priority Critical patent/WO2022082462A1/fr
Publication of WO2022082462A1 publication Critical patent/WO2022082462A1/fr

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

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a communication method and device.
  • a quasi-co-location (QCL) relationship is used to indicate that multiple resources have one or more identical or similar communication characteristics.
  • QCL quasi-co-location
  • the network device may send a transmission configuration indicator (TCI) to the terminal device to indicate the QCL relationship of the signal received by the terminal device.
  • TCI transmission configuration indicator
  • the current protocol mainly supports the network device to send TCI on one carrier of the terminal device.
  • the network device sends the TCI on the main carrier of the terminal device, which is used to indicate that the received signal on the main carrier of the terminal device has the same reference signal as the reference signal indicated by the TCI. QCL relationship.
  • the TCI indication is mainly aimed at one carrier of the terminal equipment, and is not suitable for multi-carrier scenarios.
  • the present application provides a communication method and apparatus for indicating a QCL relationship for multiple carriers of a terminal device.
  • the present application provides a communication method, and the method can be executed by a terminal device, or a module in the terminal device, such as a chip or a circuit.
  • the method is performed by a terminal device, and the method includes: the terminal device receives first TCI information from a network device, where the first TCI information indicates the first QCL information and/or the second QCL information information; the terminal device determines that the first signal has a first QCL relationship with the reference signal indicated by the first QCL information and/or has a second QCL relationship with the reference signal indicated by the second QCL information, and according to the The first TCI information determines the QCL relationship corresponding to the second signal; wherein, the first signal is a signal transmitted between the terminal device and the network device carried on the first carrier, and the second signal is carried The signal transmitted between the terminal device and the network device on the second carrier.
  • the terminal device determines the first QCL information and/or the second QCL information acting on the first carrier according to the first TCI information, and determines the QCL information acting on the second carrier based on the first TCI information.
  • the terminal device may configure the QCL information of multiple carriers, so as to indicate the QCL relationship for the multiple carriers of the terminal device.
  • the first carrier is used to receive the first TCI information, or the first carrier is the primary carrier of the terminal device.
  • the first QCL relationship instructs the terminal device to determine the spatial reception parameter information of the first signal according to the reference signal indicated by the first QCL information; the second QCL relationship indicates the The terminal device determines one or more of Doppler frequency shift, Doppler spread, average delay, and delay spread of the first signal according to the reference signal indicated by the second QCL information.
  • the terminal device determining the QCL relationship corresponding to the second signal according to the first TCI information includes: the terminal device determining the reference indicated by the second signal and the first QCL information The signal has the first QCL relationship.
  • the method further includes: the terminal device receives first indication information from the network device; the terminal device determines the second TCI information from the first configuration information, where the first configuration information includes A plurality of first correspondences, where the first correspondence includes indication information and TCI information corresponding to the indication information, and the TCI information corresponding to the first indication information in the plurality of first correspondences is the second TCI information , the second TCI information indicates third QCL information; the terminal device determines that the second signal and the reference signal indicated by the third QCL information have the second QCL relationship.
  • the first configuration information is further configured with the second QCL relationship between the second signal and the reference signal indicated by the third QCL information in the second signal. Effective time. It can also be understood that the first configuration information is further configured with the effective time of the third QCL information on the second carrier.
  • the second TCI information also indicates fourth QCL information
  • the method further includes: updating, by the terminal device, the first QCL relationship of the second signal, and the updated second QCL relationship.
  • the reference signal included in the first QCL relationship of the signal is the reference signal indicated by the fourth QCL information.
  • the second carrier is used to receive the first indication information.
  • the terminal device determines the first QCL information and/or the second QCL information acting on the first carrier according to the first TCI information, and determines the first QCL information acting on the second carrier. Further, the terminal device is configured with first configuration information, the first configuration information includes multiple TCI information groups, and the TCI information group includes TCI information of the second carrier. The terminal device receives the first indication information, and the first indication information is used to determine a group of TCI information from multiple TCI information groups, thereby determining the TCI information of the second carrier, and determining the TCI information that acts on the second carrier according to the TCI information of the second carrier. The third QCL information and/or the fourth QCL information of the carrier.
  • the terminal device can determine the QCL information on multiple carriers, especially the QCL Type-A information on multiple second carriers, by receiving the first TCI information and the first indication information once, which is helpful for the terminal device.
  • the device is indicated with QCL Type A information provided by suitable reference signals on multiple second carriers, and the signaling overhead of this method is small.
  • the terminal device determining the QCL relationship corresponding to the second signal according to the first TCI information includes: determining, by the terminal device, third TCI information from the second configuration information, and the second The configuration information includes a plurality of second correspondences, and the second correspondence includes TCI information of the first carrier and TCI information of the second carrier corresponding to the TCI information of the first carrier, and the plurality of second correspondences are described in
  • the TCI information of the second carrier corresponding to the first TCI information is the third TCI information
  • the third TCI information indicates the fifth QCL information and/or the sixth QCL information; the terminal device determines that the second signal is the same as the second signal.
  • the reference signal indicated by the fifth QCL information has the first QCL relationship, and/or it is determined that the second signal and the reference signal indicated by the sixth QCL information have the second QCL relationship.
  • the second correspondence includes at least one group, and at least one carrier of the terminal device in the group corresponds to the same QCL information.
  • the terminal device determines the first QCL information and/or the second QCL information acting on the first carrier according to the first TCI information.
  • the terminal equipment is configured with second configuration information, the second configuration information includes multiple TCI information groups, and the TCI information group includes the TCI information of the carrier (including the TCI information of the first carrier and the TCI information of the second carrier. ).
  • the terminal device receives the first TCI information, and the first TCI information is used to determine a group of TCI information from multiple TCI information groups, so as to determine the TCI information of the second carrier. Fifth QCL information and/or sixth QCL information of the carrier.
  • the terminal equipment can determine the QCL information on multiple carriers after receiving the first TCI information once, especially the QCL Type-A information on multiple carriers, which is helpful for the terminal equipment on multiple second carriers.
  • the QCL Type A information provided by the appropriate reference signal is indicated, and the signaling overhead of this method is small.
  • an embodiment of the present application provides a communication device, the device has the function of implementing the terminal device in any possible design of the first aspect or the first aspect, and the device may be a terminal device or a terminal Chip included in the device.
  • the functions of the above communication apparatus may be implemented by hardware, or by executing corresponding software in hardware, and the hardware or software includes one or more modules or units or means corresponding to the above functions.
  • the structure of the apparatus includes a processing unit and a communication unit, wherein the processing unit is configured to support the apparatus to perform the corresponding functions of the terminal device in the first aspect or any design of the first aspect .
  • the communication unit is used to support communication between the device and other communication devices, for example, when the device is a terminal device, it can receive the first TCI information from the network device.
  • the communication device may also include a storage unit coupled to the processing unit, which stores program instructions and data necessary for the device.
  • the processing unit may be a processor
  • the communication module may be a transceiver
  • the storage unit may be a memory
  • the memory may be integrated with the processor, or may be provided separately from the processor.
  • the structure of the apparatus includes a processor and may also include a memory.
  • the processor is coupled to the memory and operable to execute computer program instructions stored in the memory to cause the apparatus to perform the method of the first aspect or any possible design of the first aspect above.
  • the apparatus further includes a communication interface to which the processor is coupled.
  • the communication interface may be a transceiver or an input/output interface; when the device is a chip included in the terminal device, the communication interface may be an input/output interface of the chip.
  • the transceiver may be a transceiver circuit, and the input/output interface may be an input/output circuit.
  • an embodiment of the present application provides a chip system, including: a processor, where the processor is coupled to a memory, and the memory is used to store a program or an instruction, when the program or instruction is executed by the processor , so that the chip system implements the first aspect or the method in any possible design of the first aspect.
  • the chip system further includes an interface circuit, and the interface circuit is used to exchange code instructions to the processor.
  • processors in the chip system, and the processors may be implemented by hardware or software.
  • the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor may be a general-purpose processor implemented by reading software codes stored in memory.
  • the memory can be integrated with the processor, or can be provided separately from the processor.
  • the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip, or may be provided on different chips.
  • an embodiment of the present application provides a computer-readable storage medium on which a computer program or instruction is stored, and when the computer program or instruction is executed, causes a computer to execute the first aspect or any one of the first aspects. method in a possible design.
  • an embodiment of the present application provides a computer program product that, when a computer reads and executes the computer program product, causes the computer to execute the method in the first aspect or any possible design of the first aspect.
  • an embodiment of the present application provides a communication system, where the communication system includes a network device and at least one terminal device.
  • the communication system may further include core network equipment.
  • Fig. 1 is the structural representation of TCI state in a kind of protocol provided by this application;
  • FIG. 2 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of the architecture of another communication system provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a terminal device determining a receiving beam according to an embodiment of the present application
  • FIG. 5 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a terminal device determining a QCL relationship of a second signal according to an embodiment of the present application
  • FIG. 7 is a schematic diagram of determining QCL information of each carrier by a terminal device according to an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of another communication apparatus provided by an embodiment of the present application.
  • CA Carrier aggregation
  • a carrier unit may be referred to as a carrier in this application.
  • Each carrier corresponds to an independent cell (cell).
  • a terminal device configured with CA is connected to one primary cell (primary cel, Pcell) and at most four secondary cells (secondary cell, Scell).
  • the primary cell and all secondary cells of a terminal equipment constitute the serving cell set of the terminal equipment.
  • the serving cell may refer to the primary cell or the secondary cell.
  • the primary cell is the cell when the terminal equipment initially accesses, and is responsible for radio resource control (radio resource control, RRC) communication with the terminal equipment.
  • RRC radio resource control
  • the secondary cell is added during RRC reconfiguration to provide additional radio resources.
  • a beam is a communication resource.
  • the beams can be wide beams, or narrow beams, or other types of beams.
  • the beam forming technology may be beamforming technology or other technical means.
  • the beamforming technology may be specifically a digital beamforming technology, an analog beamforming technology, and a hybrid digital/analog beamforming technology.
  • a beam may include one or more antenna ports for transmitting data channels, control channels and sounding signals, etc.
  • a transmit beam may refer to the distribution of signal strengths formed in different directions in space after a signal is transmitted through an antenna
  • the receiving beam may refer to the signal strength distribution of the wireless signal received from the antenna in different directions in space. It can be understood that one or more antenna ports forming a beam can also be regarded as an antenna port set.
  • the signal When using the low frequency or intermediate frequency band, the signal can be sent omnidirectionally or through a wider angle, while when using the high frequency band, thanks to the small carrier wavelength of the high frequency communication system, the signal can be sent at the sending end
  • the antenna array composed of many antenna elements is arranged with the receiving end.
  • the transmitting end transmits signals with a certain beamforming weight, so that the transmitted signal forms a beam with spatial directivity. Receiving, can improve the received power of the signal at the receiving end and resist path loss.
  • the beam can also be realized by setting the parameters of the spatial transmission filter, the transmitting beam can also be characterized as the spatial transmitting filter parameter or the spatial transmitting parameter, and the receiving beam can also be characterized as the spatial receiving filter parameter and the spatial receiving parameter.
  • the QCL relationship is used to indicate that multiple resources have one or more identical or similar communication characteristics, and the same or similar communication configuration may be adopted for the multiple resources having the QCL relationship.
  • Large-scale characteristics of the channel transmitting one symbol at one port can be inferred from the large-scale characteristics of the channel transmitting one symbol at the other port.
  • Large-scale properties can include: delay spread, average delay, Doppler spread, Doppler shift, average gain, receive parameters, terminal device receive beam number, transmit/receive channel correlation, receive angle of arrival, receiver antenna Spatial correlation, main angle of arrival (Angel-of-Arrival, AoA), average angle of arrival, extension of AoA, etc.
  • the co-location indication is used to indicate whether the at least two groups of antenna ports have a QCL relationship. Specifically, the co-location indication is used to indicate whether the channel state information reference signals sent by the at least two groups of antenna ports are from the same transmission point, or the co-location indication is used to indicate that at least two groups of antenna ports are sent from the same transmission point. Whether the channel state information reference signals sent by the group antenna ports are from the same beam group.
  • the configuration and indication of the quasi-co-location assumption can be used to assist the receiving end in signal reception and demodulation.
  • the receiving end can confirm that the A port and the B port have a QCL relationship, that is, the large-scale characteristics of the signal measured on the A port can be used for signal measurement and demodulation on the B port.
  • the QCL relationship can be divided into the following four QCL types based on different parameters:
  • Type A (type-A): a comprehensive description of the target channel, including Doppler shift, Doppler spread, average delay, and delay spread ), so that the terminal device obtains a comprehensive description of the characteristics of the DM-RS, and the user demodulates the channel.
  • Type-B For low-frequency digital beams, Doppler shift and Doppler spread can be delivered after shaping compared to the reference signal (broad beam), while the delay characteristics are likely to be different.
  • Type-C Inherit the Doppler frequency shift and average delay characteristics from the reference signal for further accurate time-frequency domain synchronization (the initial access of the terminal equipment is based on the synchronization signal block (SSB) Time-frequency domain synchronization, and subsequent synchronization with a higher-precision tracking reference signal (Tracking Reference Signal, TRS).
  • SSB synchronization signal block
  • TRS Track Reference Signal
  • Type D Inherits beam information from the reference signal, including spatial reception parameters (spatial rx parameters).
  • type-A/type-B Obtain channel estimation information. For example, when channel state information (CSI-RS) is used to estimate channel state information (CSI-RS), time-frequency tracking information obtained on a TRS port that satisfies the QCL relationship can be used.
  • CSI-RS channel state information
  • time-frequency tracking information obtained on a TRS port that satisfies the QCL relationship can be used.
  • type-C Obtain measurement information such as reference signal received power (RSRP).
  • RSRP reference signal received power
  • type-D Auxiliary terminal equipment beamforming (forming spatial filters, beam indication, etc.), typically used in high frequency bands.
  • the spatial parameter information obtained on the CSI-RS satisfying the QCL relationship can be used to assist the beamforming of the terminal equipment for receiving and demodulating the downlink control channel (PDCCH) and downlink data channel (physical downlink shared). channel, PDSCH).
  • PDCH downlink control channel
  • PDSCH downlink data channel
  • the QCL type By configuring the QCL type between the reference signal ports, it can be used to obtain channel estimation information, assist terminal equipment beamforming and other requirements (QCL identifiers can be assigned to beams with QCL relationships in the beams associated with the frequency resource group. Through the QCL indication, The terminal device can know the receive beam).
  • QCL identifiers can be assigned to beams with QCL relationships in the beams associated with the frequency resource group. Through the QCL indication, The terminal device can know the receive beam).
  • Spatial quasi-iso-position can be considered as a type of QCL.
  • uplink communication includes the transmission of uplink physical channels and uplink signals.
  • the uplink physical channel includes random access channel (PRACH), uplink control channel (physical uplink control channel, PUCCH), uplink data channel (physical uplink shared channel, PUSCH), etc.
  • the uplink signal includes sounding reference signal (sounding reference signal). reference signal, SRS), uplink control channel demodulation reference signal (PUCCH de-modulation reference signal, PUCCH-DMRS), uplink data channel demodulation reference signal PUSCH-DMRS, uplink phase noise tracking signal (phase noise tracking reference signal, PTRS) ), uplink positioning signal (uplink positioning RS) and so on.
  • Downlink communication includes the transmission of downlink physical channels and downlink signals.
  • the downlink physical channel includes broadcast channel (physical broadcast channel, PBCH), PDCCH, PDSCH, etc.
  • the downlink signal includes primary synchronization signal (PSS), secondary synchronization signal (secondary synchronization signal, SSS), downlink control channel demodulation Reference signal (PDCCH-DMRS), downlink data channel demodulation reference signal (PDSCH-DMRS), PTRS, CSI-RS, cell reference signal (CRS) (NR is not available), TRS (LTE is not available), LTE/NR Positioning signal (positioning RS), etc.
  • TCI Transmission configuration indicator
  • TCI is a field in downlink control information (downlink control information, DCI) used to indicate quasi-co-location of PDSCH antenna ports.
  • DCI downlink control information
  • Common QCL reference signal Before RRC configuration, SSB makes reference to DMRS in PDSCH and PDCCH, and QCL reference information is type-A. After RRC is configured, under sub6G, SSB refers to TRS, QCL refers to type-C, TRS refers to DMRS, QCL refers to type-A, CSI-RS refers to DMRS, and QCL refers to type-A .
  • QCL reference signals include SSB (synchronization signal block), TRS (tracking reference signal), CSI-RS for BM (beam management, beam management), and CSI-RS for CSI.
  • TRS tracking reference signal
  • CSI-RS CSI-RS for BM
  • CSI-RS CSI-RS for CSI
  • the upper layer in the protocol configures the QCL through the TCI state (TCI state).
  • TCI state TCI state
  • the network device sends a MAC control element (MAC control element, MAC CE) to activate one or more TCI states.
  • MAC control element MAC control element, MAC CE
  • the network device may further send a DCI indicating one of the plurality of activated TCIs.
  • the TCI state includes a TCI state ID (TCI state ID) and a TCI state parameter, where the TCI state parameter is used to configure a quasi-co-location relationship between one or two reference signals and the DMRS of the PDSCH, and the TCI state parameter may include one or more QCL information, the QCL information is used to indicate the QCL relationship (exemplarily, the TCI status parameter includes two QCL information, and the two QCL information includes one QCL type-D information and one QCL type-A information).
  • the QCL information includes a cell identifier, a bandwidth part (BWP) identifier, and a reference signal identifier, and the QCL information is used to indicate a reference signal under one BWP of one cell.
  • BWP bandwidth part
  • the QCL information may also include other information for indicating received or sent parameters.
  • the QCL information can be further extended to scenarios such as multi-transceiver node (multi-TRP) scenarios or high-speed train (HST) scenarios, and corresponding enhancements are made.
  • multi-TRP multi-transceiver node
  • HST high-speed train
  • Figure 1 exemplarily shows a schematic structural diagram of the TCI state in the protocol, the TCI state includes a TCI state identifier and a TCI state parameter, and the TCI state parameter includes QCL type-A information and QCL type-D information, wherein the QCL type-A information includes cell Identity, BWP identity and reference signal identity, reference signal such as CSI-RS, wherein QCL type-D information includes cell identity, BWP identity and reference signal identity, reference signal such as SSB.
  • the TCI state includes a TCI state identifier and a TCI state parameter
  • the TCI state parameter includes QCL type-A information and QCL type-D information
  • the QCL type-A information includes cell Identity, BWP identity and reference signal identity, reference signal such as CSI-RS
  • QCL type-D information includes cell identity, BWP identity and reference signal identity, reference signal such as SSB.
  • the TCI status identifier may also be referred to as a TCI identifier
  • the TCI status parameter may also be referred to as a TCI parameter
  • FIG. 2 shows a communication system provided by an embodiment of the present application, and the communication system may include a network device and a terminal device.
  • the embodiments of the present application do not limit the number of network devices and terminal devices included in the communication system.
  • FIG. 2 is only a schematic diagram, the communication system may also include other network devices, such as core network devices, wireless relay devices and wireless backhaul devices, which are not shown in FIG. 2 .
  • the network device can provide wireless access-related services for the terminal device, and implement one or more of the following functions: wireless physical layer function, resource scheduling and wireless resource management, quality of service (Quality of service, QoS) management, wireless access control, and mobility management functions.
  • the terminal device can communicate with the network device through the air interface.
  • the network device may configure and activate at least two carriers for one terminal device, where the at least two carriers are used for the network device to communicate with the terminal device.
  • a network device is an access device that a terminal device wirelessly accesses to the mobile communication system, which can be a base station (base station), an evolved NodeB (eNodeB), a transmission reception point (TRP), The next generation NodeB (gNB) in the 5G mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, etc.; it can also be a module or unit that completes some functions of the base station, for example, it can be A centralized unit (central unit, CU) can also be a distributed unit (distributed unit, DU).
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.
  • a terminal device may also be referred to as a terminal (terminal), a user equipment (UE), a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT), and the like.
  • the terminal device can be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal device, industrial control (industrial control) wireless terminals in ), wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety Terminals, wireless terminals in smart cities, wireless terminals in smart homes, and so on.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.
  • Network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle; can also be deployed on water; can also be deployed in the air on aircraft, balloons and satellites.
  • the embodiments of the present application do not limit the application scenarios of the network device and the terminal device.
  • Communication between network equipment and terminal equipment can be performed through licensed spectrum (licensed spectrum), or unlicensed spectrum (unlicensed spectrum), or both licensed spectrum and unlicensed spectrum.
  • the network device and the terminal device can communicate through the frequency spectrum below 6 GHz (gigahertz, GHz), can also communicate through the frequency spectrum above 6 GHz, and can also use the frequency spectrum below 6 GHz and the frequency spectrum above 6 GHz for communication at the same time.
  • This embodiment of the present application does not limit the spectrum resources used between the network device and the terminal device.
  • the terminal device includes a processor 101 , a memory 102 and a transceiver 103
  • the transceiver 103 includes a transmitter 1031 , a receiver 1032 and an antenna 1033
  • the network device includes a processor 201 , a memory 202 and a transceiver 203
  • the transceiver 203 includes a transmitter 2031 , a receiver 2032 and an antenna 2033 .
  • the receiver 1032 may be used to receive transmission control information through the antenna 1033
  • the transmitter 1031 may be used to send transmission feedback information to the network device through the antenna 1033 .
  • the transmitter 2031 can be used to send transmission control information to the terminal device through the antenna 2033
  • the receiver 2032 can be used to receive the transmission feedback information sent by the terminal device through the antenna 2033 .
  • the current protocol supports the network equipment to send TCI on one carrier of the terminal equipment.
  • the network equipment sends TCI on the primary cell resource (primary carrier) of the terminal equipment to indicate the receiving beam of the terminal equipment on the primary cell resource.
  • the current protocol can also support the indication of cross-carrier type-D.
  • the receiving beam of the terminal equipment includes the terminal equipment beam 1 to the terminal equipment beam 4, and the terminal equipment scans the beam on the carrier 1 (reference signal measurement ), determine that the best receiving beam for receiving network equipment beam 1 on carrier 1 is terminal equipment beam 2.
  • the network device can instruct the terminal device to receive the signal carried by the beam 1 on the network device carrier 2 by sending a cross-carrier beam indication. If the network device indicates the type-D quasi-co-location relationship, and point to the network device carrier 1 If the signal on beam 1 is used, the terminal device can directly determine that the receiving beam is beam 2 of the terminal device.
  • Common TCI Common TCI
  • Unified TCI Unified TCI
  • Joint TCI Joint TCI
  • Common TCI can at least be used to indicate the PDSCH and PDCCH channel receiving beams of the terminal equipment on one carrier (that is, it can be used to determine the receiving parameters of multiple channels/signals), or it can also indicate downlink reference signals (such as CSI-RS, TRS) ) of the receiving beam, or may also indicate the UE uplink channel (PUSCH and/or PUCCH), the transmission beam of the uplink reference signal SRS (Sounding reference signal) (for example, used to determine the transmission spatial filter parameters).
  • the network device can configure the QCL information of multiple carriers through Common TCI.
  • Common TCI includes QCL type-D information.
  • the QCL-type-D information indicates that one downlink RS is referenced, and the QCL-type-D information can be used for multiple carriers.
  • type-A is included in the Common TCI. Since the terminal equipment demodulates the signal with high requirements for accurate time-frequency synchronization, in the multi-carrier scenario, multiple carriers occupy different frequency domain resources, so the timing and frequency obtained by measuring the reference signal on part of the resources of a frequency band are obtained. frequency offset and cannot be directly used in other frequency bands. That is, QCL type-A information cannot be used directly for other carriers.
  • Common TCI includes type-D and QCL type-A.
  • QCL type-D information in Common TCI can be used for multiple carriers, and QCL type-A information in Common TCI cannot be directly used for other carriers.
  • the present application provides a communication method.
  • a terminal device receives a Common TCI from a network device, how to determine the QCL type-A information and/or QCL type-D information on each carrier of the terminal device information.
  • FIG. 5 is a schematic flowchart of a communication method provided by an embodiment of the present application. Referring to Figure 5, the method includes:
  • Step 501 the network device sends the first TCI information to the terminal device.
  • the terminal device may be pre-configured with third configuration information, and the third configuration information may be sent by the network device to the terminal device, for example, the network device sends the third configuration information to the terminal device through an RRC message.
  • the third configuration information includes multiple TCI states, the TCI state includes the TCI identifier and the TCI parameter indicated by the TCI identifier, and the TCI parameter may include one or more QCL information, wherein the QCL information can also be understood as a QCL relationship, and the QCL information in the Including the reference signal identification and the QCL type, the QCL type indicates part or all of the information of the inherited reference signal.
  • the TCI parameter includes two QCL information, one of which is QCL type-D information, and the other is one of QCL type-A information, QCL type-B information, and QCL type-C information.
  • the TCI parameter includes three QCL information, and the three QCL information are one QCL type-A information and two QCL type-D information, which may be applicable to the scenario of high-speed rail co-frequency networking.
  • the TCI parameter includes two QCL information
  • the two QCL information are respectively QCL type-D information and QCL type-A information.
  • Table 1 exemplarily shows the correspondence included in a third configuration information, where the third configuration information includes M TCI parameters, which are respectively TCI parameter 0 to TCI parameter M-1, and are respectively represented by TCI identifier 0 to TCI identifier M-1 instructions.
  • TCI identifier 0 indicates TCI parameter 0 (or in other words, TCI identifier 0 indicates QCL type-D information 0 and QCL type-A information 0 in TCI parameter 0), and TCI identifier 1 indicates TCI parameter 1 (or in other words, TCI The identifier 1 indicates the QCL type-D information 1 in the TCI parameter 1), and the TCI identifier 2 indicates the TCI parameter 2 (or in other words, the TCI identifier 2 indicates the QCL type-A information 2 in the TCI parameter 2).
  • the first TCI information may be Common TCI, and the first TCI information indicates the first QCL information and/or the second QCL information.
  • the first QCL information is QCL type-D information
  • the second QCL information is QCL type-A information information.
  • the first TCI information is a TCI identifier in the third configuration information
  • the TCI parameter indicated by the TCI identifier includes the first QCL information and/or the second QCL information.
  • the first TCI information is TCI identifier 0, and the TCI parameter 0 indicated by the TCI identifier 0 includes QCL type-D information 0 and QCL type-A information 0.
  • the first TCI information is TCI identifier 1, and the TCI parameter 1 indicated by the TCI identifier 1 includes QCL type-D information 1.
  • the first TCI information may be a TCI parameter, and the first TCI information includes the first QCL information and/or the second QCL information.
  • the first TCI information is TCI parameter 0, and TCI parameter 0 includes QCL type-D information 0 and QCL type-A information 0.
  • the first TCI information is TCI parameter 1, and TCI parameter 1 includes QCL type-D information 1.
  • the network device may carry one or more first TCI information in a MAC CE or DCI, and the MAC CE or DCI may be used to activate or indicate corresponding one or more TCI parameters.
  • Step 502 the terminal device determines that the first signal has a first QCL relationship with the reference signal indicated by the first QCL information and/or has a second QCL relationship with the reference signal indicated by the second QCL information, and determines the second QCL relationship according to the first TCI information.
  • the QCL relationship corresponding to the signal is a first QCL relationship with the reference signal indicated by the first QCL information and/or has a second QCL relationship with the reference signal indicated by the second QCL information.
  • the network device may configure N carriers for the terminal device, where N is greater than or equal to 2, and the N carriers are used for information transmission between the terminal device and the network device.
  • the N carriers may be in the same frequency band or in different frequency bands, where the frequency band may be a frequency band defined by the protocol or a frequency range (frequency range) divided by the protocol.
  • the N carriers include one first carrier and N-1 second carriers.
  • the first carrier is the primary carrier of the terminal device, or the first carrier is the carrier on which the terminal device receives the first TCI information.
  • the N-1 second carriers may be currently configured and activated carriers or currently configured but not activated carriers in the terminal device.
  • the network device configures five carriers for the terminal device, which are carrier 0 to carrier 4 respectively. If the primary carrier of the terminal device is carrier 0, or the terminal device receives the first TCI information through carrier 0, then carrier 0 is the first carrier, carrier 1 to carrier 4 are all second carriers, and carrier 1 to carrier 4 may be the terminal device Active or inactive carriers configured in .
  • the signal transmitted on the first carrier may be referred to as the first signal, that is, the first carrier is used for transmitting the first signal between the terminal device and the network device.
  • the signal transmitted on the second carrier may be referred to as the second signal, that is, the second carrier is used for transmitting the second signal between the terminal device and the network device.
  • a second signal corresponding to the second carrier may be transmitted on each of the N-1 second carriers.
  • the first TCI information may indicate the first QCL information
  • the first QCL information may indicate the first reference signal
  • the terminal device may determine that the first signal and the first reference signal have a first QCL relationship. Spatial reception parameter information of the first signal is determined according to the first reference signal.
  • the first TCI information may also indicate the second QCL information, the second QCL information indicates the second reference signal, and the terminal device may determine that the first signal and the second reference signal have a second QCL relationship.
  • the reference signal determines one or more of Doppler shift, Doppler spread, average delay, and delay spread of the first signal.
  • the first reference signal and the second reference signal may be the same signal or different signals.
  • the terminal device may also determine that the second signal and the first reference signal have a first QCL relationship. Specifically, it is understood that the terminal device may determine the spatial reception parameter information of the second signal according to the first reference signal.
  • the terminal device determines that the first signal and the first reference signal have a first QCL relationship
  • the terminal device determines the first QCL information as QCL type-D information on the first carrier, or the terminal The device applies the first QCL information on the first carrier, or the terminal device sets the first QCL information to take effect on the first carrier.
  • the determination by the terminal device that the first signal and the second reference signal have the second QCL relationship, and the determination that the second signal and the first reference signal have the first QCL relationship are similar to the above understanding, and will not be repeated. This description is equally applicable to other embodiments.
  • the QCL type-A information on the second carrier may be further determined, that is, the second QCL relationship of the second signal may be determined.
  • the terminal device may be preconfigured with first configuration information, and the first configuration information may be sent by the network device to the terminal device.
  • the network device sends the first configuration information to the terminal device through an RRC message.
  • the first configuration information may be an independent piece of configuration information, or may be a part of configuration information in the third configuration information.
  • the first configuration information includes a plurality of first correspondences, and any one of the first correspondences in the plurality of first correspondences may include indication information and a TCI information group corresponding to the indication information, and the indication information may be a group identifier of the TCI information group , the TCI information group includes TCI information of K second carriers, where K is greater than or equal to 1.
  • the number K of TCI information of the second carrier included in any two TCI information groups may be the same or different.
  • the TCI information of the second carrier in the TCI information group may be associated with the carrier identifier of the second carrier.
  • the TCI information group also includes the carrier identifier corresponding to the TCI information of the second carrier.
  • the terminal device is configured with 4 second carriers
  • the TCI information group contains the TCI information of the 4 second carriers
  • the carrier identifiers carrier 1 to carrier 4
  • carrier identification carrier identification
  • the carrier identifier of the corresponding second carrier may not be included in the TCI information group, and the second carrier corresponding to the TCI information of each second carrier may be implicitly indicated based on the order of the TCI information of the second carrier in the TCI information group .
  • Step 601 The network device sends first indication information to the terminal device.
  • the first indication information is used by the terminal device to determine the QCL type-A information of the second carrier.
  • Step 602 the terminal device determines the second TCI information according to the first indication information.
  • the terminal device may determine the TCI information group whose group identifier is the first indication information from the multiple TCI information groups, and then determine the second TCI information according to the TCI information of the second carrier in the TCI information group.
  • the TCI information group may specifically be a TCI identifier group, and the TCI identifier group includes the TCI identifier of the second carrier.
  • the terminal device may determine the group identifier as the TCI identifier group of the first indication information from the multiple TCI identifier groups, and determine the second carrier from the third configuration information according to the TCI identifier of the second carrier in the TCI identifier group.
  • the TCI parameter of the carrier and the TCI parameter of the second carrier are the second TCI information.
  • the terminal device may determine from multiple TCI identification groups that the group identification is the TCI identification group of the first indication information, and the TCI identification of the second carrier in the TCI identification group is the second TCI information.
  • the TCI information group may specifically be a TCI parameter group, and the TCI parameter group includes the TCI parameters of the second carrier.
  • the terminal device may determine, from multiple TCI parameter groups, a TCI parameter group whose group identifier is the first indication information, and the TCI parameter of the second carrier in the TCI parameter group is the second TCI information.
  • the first configuration information contains 3 TCI identification groups, which are respectively TCI identification groups. 1 to TCI identification group 3, and are respectively indicated by group identification 1 to group identification 3, and each TCI identification group includes TCI identifications corresponding to carrier 1 to carrier 4 respectively.
  • carrier 1 to carrier 4 are all second carriers.
  • the first indication information is the group identifier 2
  • the first TCI information indicates the TCI identifier group 2
  • the TCI identifiers 21 to 24 in the TCI identifier group 2 are the second TCI information.
  • the first indication information is group identification 2
  • the first TCI information indicates TCI identification group 2
  • the terminal device determines the TCI information corresponding to TCI identifications 21 to TCI identifications 24 in TCI identification group 2
  • the TCI information corresponding to 24 is the second TCI information.
  • the terminal device may use the TCI information of a second carrier in the TCI information group indicated by the first indication information as the second TCI information, or may use the TCI information of each second carrier in the TCI information group indicated by the first indication information as the second TCI information.
  • the TCI information constitutes the second TCI information, which is not specifically limited in this application. In step 603, the latter method may be used as an example to illustrate.
  • Step 603 the terminal device determines that the second signal and the reference signal indicated by the third QCL information have a second QCL relationship.
  • the second TCI information may include TCI information of K second carriers.
  • the number K of TCI information of the second carrier in the second TCI information is equal to the number of second carriers currently configured by the terminal device. N-1 (K equals N-1).
  • the terminal device determines the TCI information corresponding to the second carrier according to the carrier identifier of the second carrier.
  • the carrier identifier corresponding to the TCI information is not included in the second TCI information, and the terminal equipment, according to the order of the TCI information in the second TCI information, respectively corresponds to the carrier identifier in the TCI information group from small to large or from large to small. two carriers, so as to determine the TCI information of each second carrier.
  • the second TCI information includes TCI identifiers 21 to TCI identifiers 24, and the second TCI information includes carrier identifiers of the second carriers corresponding to TCI identifiers 21 to TCI identifiers 24, for example, the carrier waves respectively Carrier IDs from 1 to carrier 4.
  • the terminal device may determine that TCI identifiers 21 to 24 are TCI information corresponding to carrier 1 to carrier 4, respectively.
  • the terminal device may determine that the TCI identifiers 21 to TCI identifiers 24 are respectively carrier 1 to carrier 4 (or carrier 4 to carrier 1) correspond to TCI information respectively.
  • the second TCI information may include a TCI identifier of the second carrier, or a TCI parameter of the second carrier. If the second TCI information includes the TCI identifier of the second carrier, the terminal device determines the TCI parameter of the second carrier from the third configuration information according to the TCI identifier of the second carrier, and the TCI parameter of the second carrier includes the second carrier. Carrier's QCL information. If the second TCI information includes the TCI parameter of the second carrier, the TCI parameter of the second carrier includes the QCL information of the second carrier. Both of these two manners can be considered as the second TCI information indicating the QCL information of the second carrier.
  • the second TCI information indicates the QCL information of the second carrier, including: the second TCI information indicates the third QCL information and/or the fourth QCL information of the second carrier, wherein the third QCL information is QCL type-A information, and the fourth The QCL information is QCL type-D information, and the following implementation modes 1 to 3 may be provided as follows.
  • the second TCI information indicates that the QCL information of the second carrier includes third QCL information
  • the terminal device determines that the third QCL information is the QCL type-A information of the second carrier, that is, the second signal and the first The third reference signal indicated by the three QCL information has a second QCL relationship.
  • the third QCL information may also correspond to the effective time on the second carrier, or in other words, the second signal and the third QCL information indicate The second QCL relationship of the reference signal may also correspond to the valid time on the second signal.
  • the first configuration information also includes an effective time associated with the QCL type-A information in the TCI information. If the TCI information is used to determine the QCL type-A information of the second carrier, the terminal equipment The time at which the QCL type-A information will be applied to the second carrier may be determined based on the effective time. In addition, the effective time associated with the QCL type-A information in the TCI information may also be pre-specified in the protocol.
  • the second TCI information also indicates that the QCL information of the second carrier includes the fourth QCL information, and the terminal device determines whether to cover the fourth QCL information with the QCL type-D information of the second carrier determined in the above step 501 ( That is, the first QCL information indicated by the above-mentioned first TCI information).
  • the reference signal having the first QCL relationship with the second signal changes to the first reference signal indicated by the first QCL information to the fourth reference signal indicated by the fourth QCL information.
  • the terminal device can determine whether The QCL type-D information of the second carrier is updated from QCL type-D information 0 to QCL type-D information 4, that is, the reference signal having the first QCL relationship in the second signal is changed from reference signal 0 to reference signal 4,
  • reference signal 0 is a reference signal indicated by QCL type-D information
  • reference signal 4 is a reference signal indicated by QCL type-D information 4.
  • the present application exemplarily provides the following at least three embodiments in which the terminal device determines whether to update the QCL type-D information.
  • the terminal device determines that the second TCI information indicates that the QCL information of the second carrier includes fourth QCL information, it determines to update the QCL type-D information of the second carrier to be the fourth QCL information.
  • the terminal equipment determines that the second TCI information indicates that the QCL information of the second carrier includes fourth QCL information, and the second carrier is the receiving carrier used by the terminal equipment to receive the first indication information, that is, the first indication If the information is carried on the second signal, the QCL type-D information of the second carrier is updated to be the fourth QCL information. If the second carrier is not the receiving carrier used by the terminal device to receive the first indication information, the terminal device keeps the QCL type-D information of the second carrier as the first QCL information.
  • the receiving carrier used by the terminal device to receive the first indication information may be referred to as a third carrier, and the third carrier is the same as or different from the first carrier.
  • Embodiment 3 if the terminal equipment determines that the second TCI information indicates that the QCL information of the second carrier includes the fourth QCL information, and the second carrier is the main carrier of the terminal equipment, then update the QCL type-D information of the second carrier to be the first carrier. Four QCL information. If the second carrier is not the primary carrier of the terminal equipment, the terminal equipment keeps the QCL type-D information of the second carrier as the first QCL information.
  • the second TCI information includes TCI identifiers 21 to TCI identifiers 24 .
  • the terminal device determines the QCL type-A information in the TCI information corresponding to the TCI identifiers 21 to 24 respectively as the type-A information of the carrier 1 to the carrier 4, respectively.
  • carrier 4 is the third carrier
  • the TCI information corresponding to the TCI identifier 24 in the second TCI information includes QCL type-D information, then the QCL type-D information included in the TCI information corresponding to the TCI identifier 24 covers the first QCL information.
  • the second TCI information indicates that the QCL information of the second carrier includes the third QCL information and the fourth QCL information, and this implementation mode may be specifically described in combination with the foregoing implementation mode 1 and implementation mode 2.
  • FIG. 7 is a schematic diagram exemplarily shown in this application for a terminal device to determine the QCL information of each carrier.
  • the network device configures five carriers for the terminal device, which are respectively carrier 0 to carrier 4, carrier 0 is the first carrier, and carrier 1 to carrier 4 are all second carriers.
  • the first TCI information indicates the QCL type-D information and QCL type-A information of carrier 0
  • the first indication information indicates the second TCI information
  • the second TCI information indicates the QCL type-A information of carrier 1 and the QCL type-A information of carrier 2.
  • the terminal equipment may apply the QCL type-D information of carrier 0 to carriers 0 to 4, and the QCL type-A information of carrier 0 to carrier 0. Further, the terminal equipment can act on the QCL type-A information of carrier 1 on carrier 1, act on the QCL type-A information of carrier 2 on carrier 2, and act on the QCL type-A information of carrier 3 on carrier 3. , and the QCL type-A information of carrier 4 is applied to carrier 4.
  • the second TCI information also indicates the QCL type-D information of carrier 3, and the terminal device can determine whether to apply the QCL type-D information of carrier 3 indicated by the second TCI information to carrier 3, for example, carrier 3 is the terminal device
  • the terminal device acts on the carrier 3 with the QCL type-D information of the carrier 3 indicated by the second TCI information.
  • the network device needs to update the beam configuration (or transmission configuration) of the terminal device, it can send a first indication information to the terminal device again, and the terminal device performs the above steps 602 and 602 based on the first indication information received again. 603. Update the QCL information on the carrier.
  • this application does not exclude the situation that the network device configures one first carrier and one second carrier for the terminal device, which is the same as the network device configuring one first carrier and multiple second carriers for the terminal device. is implemented similarly in the case of .
  • the number K of the TCI information of the second carrier included in the TCI information group is the same as the number N-1 of the second carrier currently configured by the terminal device (that is, K is equal to N-1) as Example description.
  • the number K of TCI information of the second carrier included in the TCI information group is different from the number N-1 of the second carrier currently configured by the terminal device.
  • the number K of TCI information of the second carrier contained in the second TCI information determined by the terminal device may be different from the number N ⁇ 1 of the second carriers currently configured by the terminal device.
  • the number K of TCI information of the second carrier in the second TCI information is greater than the number N-1 of the second carriers currently configured by the terminal device (K is greater than N-1).
  • the terminal device determines the corresponding TCI information according to the carrier identifier of the second carrier.
  • the carrier identifier corresponding to the TCI information is not included in the second TCI information, and the terminal device, according to the order of the TCI information in the second TCI information, respectively corresponds to the carrier identifier from small to large or the first N-1 TCI information in the second TCI information.
  • the second carrier from the largest to the smallest, so as to determine the TCI information of the N-1 second carrier.
  • the number K of TCI information of the second carrier in the second TCI information is less than the number N-1 of the second carriers currently configured by the terminal device (K is less than N-1).
  • the terminal device determines the TCI information corresponding to the second carrier according to the carrier identifier of the second carrier. If the second TCI information does not include the carrier identifier corresponding to the TCI information, the terminal device sequentially determines the K pieces of TCI information as the first K second carriers among the N-1 second carriers according to the order of the TCI information in the second TCI information TCI information.
  • the terminal device determines the first QCL information and/or the second QCL information acting on the first carrier according to the first TCI information, and determines the first QCL information acting on the second carrier. Further, the terminal device is configured with first configuration information, the first configuration information includes multiple TCI information groups, and the TCI information group includes TCI information of the second carrier. The terminal device receives the first indication information, and the first indication information is used to determine a group of TCI information from multiple TCI information groups, thereby determining the TCI information of the second carrier, and determining the TCI information that acts on the second carrier according to the TCI information of the second carrier. The third QCL information and/or the fourth QCL information of the carrier.
  • the terminal device can determine the QCL information on multiple carriers, especially the QCL Type-A information on multiple second carriers, by receiving the first TCI information and the first indication information once, which is helpful for the terminal device.
  • the device is indicated with QCL Type A information provided by suitable reference signals on multiple second carriers, and the signaling overhead of this method is small.
  • the terminal device determines the QCL information indicated by the first TCI information as the QCL information of the first carrier, and determines the QCL information of the second carrier according to the first configuration information, the first TCI information and the first indication information.
  • the present application also provides another implementation manner, in which the terminal device preconfigures the second configuration information, and the terminal device determines the QCL information of the first carrier and the QCL information of the second carrier based on the first TCI information and the second configuration information .
  • the second configuration information may be sent by the network device to the terminal device, for example, the network device sends the first configuration information to the terminal device through an RRC message.
  • the second configuration information may be an independent piece of configuration information, or may be a part of the configuration information in the third configuration information.
  • the second configuration information includes multiple second correspondences, and the second correspondence includes TCI information of the first carrier and TCI information of the second carrier corresponding to the TCI information of the first carrier.
  • the second correspondence is a TCI Information group, each TCI information group includes TCI information of the first carrier and TCI information of the second carrier, wherein the number of TCI information of the second carrier included in the TCI information group can be the same as that of the second carrier configured in the terminal device. are the same or different.
  • the number of TCI information of the second carrier included in any two TCI information groups may be the same or different.
  • the first carrier is the main carrier of the terminal equipment
  • the second carrier is the secondary carrier of the terminal equipment.
  • the first carrier and the second carrier may be collectively referred to as carriers as follows, and the TCI information of the first carrier and the TCI information of the second carrier are collectively referred to as is the TCI information of the carrier.
  • the TCI information of the carrier in the TCI information group may be associated with the carrier identifier of the carrier.
  • the TCI information group also includes the carrier identifier corresponding to the TCI information of the carrier, for example, in the terminal device. Five carriers are configured, the TCI information group includes TCI information of the five carriers, and carrier identifiers (carrier identifiers of carrier 0 to carrier 4) corresponding to the TCI information of the five carriers respectively.
  • the TCI information group may not include the carrier identifier of the corresponding carrier, and the carrier corresponding to the TCI information of each carrier may be implicitly indicated based on the order of the TCI information of the carriers in the TCI information group.
  • FIG. 8 is a schematic flowchart of another communication method exemplarily provided by the present application. The process is as follows:
  • Step 801 the terminal device determines third TCI information according to the first TCI information.
  • the terminal device determines one TCI information group from multiple TCI information groups, and the TCI information of the first carrier in the TCI information group is the first TCI information. Then, the terminal device determines the third TCI information according to the TCI information of the second carrier in the TCI information group.
  • the first TCI information may correspond to one TCI information group among multiple TCI information groups, and the first TCI information may be understood as indication information used to indicate the one TCI information group, or be understood as the one TCI information group group ID.
  • the TCI information group may specifically be a TCI identification group, and the TCI identification group includes the TCI identification of the carrier (including the TCI identification of the first carrier and the TCI identification of the second carrier).
  • the terminal device may determine the TCI identification group indicated by the first TCI information from the multiple TCI identification groups, and determine the second carrier from the third configuration information according to the TCI identification of the second carrier in the TCI identification group.
  • the TCI parameter of the second carrier is the third TCI information.
  • the terminal device may determine the TCI identification group indicated by the first TCI information from multiple TCI identification groups, and the TCI identification of the second carrier in the TCI identification group is the third TCI information.
  • the TCI information group may specifically be a TCI parameter group, and the TCI parameter group includes the TCI parameters of the carrier.
  • the terminal device may determine the TCI parameter group indicated by the first TCI information from multiple TCI parameter groups, and the TCI parameter of the second carrier in the TCI parameter group is the third TCI information.
  • Table 3 exemplarily shows a corresponding relationship contained in the second configuration information.
  • the second configuration information is configured with 3 TCI information groups, which are respectively TCI identification groups. 1 to TCI identifier group 3, each TCI information group includes TCI identifiers corresponding to carrier 0 to carrier 4 respectively.
  • the first TCI information is the TCI identifier 20
  • the first TCI information indicates the TCI identifier group 2
  • the TCI identifiers 21 to 24 in the TCI identifier group 2 are the third TCI information.
  • the first TCI information is TCI identification 20
  • the first TCI information indicates TCI identification group 2
  • the terminal device determines the TCI information corresponding to TCI identification 21 to TCI identification 24 in TCI identification group 2, respectively, and the TCI identification 21 to TCI identification.
  • the TCI information corresponding to 24 is the third TCI information.
  • TCI Identity Group carrier 0 carrier 1 carrier 2 carrier 3 Carrier 4 TCI Identity Group 1 TCI logo 10 TCI logo 11 TCI logo 12 TCI logo 13 TCI logo 14 TCI Identity Group 2 TCI logo 20 TCI logo 21 TCI logo 22 TCI logo 23 TCI logo 24 TCI Identity Group 3 TCI logo 30 TCI logo 31 TCI logo 32 TCI logo 33 TCI logo 34
  • the terminal device may use the TCI information of a second carrier in the TCI information group indicated by the first TCI information as the third TCI information, or may use the TCI information of each second carrier in the TCI information group indicated by the first TCI information as the third TCI information.
  • the TCI information constitutes the third TCI information, which is not specifically limited in this application. In step 802, the latter manner may be used as an example to illustrate.
  • the TCI information group may further include at least two groups, each group includes at least one carrier, and each group corresponds to one piece of TCI information.
  • the TCI information group includes at least two groups, each group includes at least one carrier, and each group corresponds to a TCI identifier.
  • the terminal device can determine the TCI identification group indicated by the first TCI information from a plurality of TCI identification groups, and for a grouping in the TCI identification group, according to the corresponding TCI identification of the grouping, determine from the third configuration information.
  • the TCI parameter of the carrier in the group, the TCI parameter of the carrier is the third TCI information.
  • the terminal device may determine the TCI identification group indicated by the first TCI information from multiple TCI identification groups, and for a group in the TCI identification group, the TCI identification corresponding to the group is the third TCI information.
  • the TCI information group includes at least two groups, each group includes at least one carrier, and each group corresponds to one TCI parameter.
  • the terminal device may determine the TCI parameter group indicated by the first TCI information from multiple TCI parameter groups, and for a group in the TCI parameter group, the TCI parameter corresponding to the group is the third TCI information.
  • the TCI identification corresponding to each grouping in the TCI identification group indicates the QCL type-A information or the QCL type-D information
  • the TCI information group is the TCI parameter group
  • the TCI identification group is QCL type-A information or QCL type-D information.
  • the TCI parameter corresponding to each packet is QCL type-A information or QCL type-D information.
  • the second configuration information includes 3 TCI identification groups, which are respectively TCI identification groups. 1 to TCI identifies group 3.
  • Each TCI identification group includes two groups, and the QCL type-A information or QCL type-D information corresponding to each group is indicated by a TCI identification.
  • the first grouping includes carrier 0 and carrier 1
  • the QCL type-D information corresponding to the first grouping is indicated by TCI identification 20
  • the second grouping includes carrier 2 to carrier 4
  • the second grouping includes carrier 2 to carrier 4.
  • the QCL type-A information corresponding to the packet is indicated by the TCI identifier 22.
  • the first TCI information is the TCI identifier 20
  • the first TCI information indicates the TCI identifier group 2
  • the TCI identifier 20 and the TCI identifier 22 in the first group in the TCI identifier group 2 are the third TCI information.
  • the first TCI information is the TCI identifier 20
  • the first TCI information indicates the TCI identifier group 2
  • the terminal device determines the TCI parameters corresponding to the TCI identifier 20 and the TCI identifier 22 in the TCI identifier group 2, respectively.
  • the TCI parameters corresponding to 22 respectively are the third TCI information.
  • the terminal device may use the TCI information corresponding to one group in the TCI information group indicated by the first TCI information as the third TCI information, or may use each of at least two groups in the TCI information group indicated by the first TCI information
  • the TCI information corresponding to the grouping constitutes the third TCI information, which is not specifically limited in this application.
  • the latter manner may be used as an example to illustrate.
  • the TCI information corresponding to each group in the TCI information group may be associated with the group identifier.
  • the TCI information group also includes the group identifier of each group.
  • the role of the TCI information is on the carrier in the packet indicated by the corresponding packet identifier.
  • the group identifier can also be replaced with a carrier identifier.
  • the TCI information acts on the carrier indicated by the corresponding carrier identifier and other carriers in the group to which the carrier indicated by the carrier identifier belongs.
  • the TCI information group may not contain a group identifier or a carrier identifier, and based on the order of grouping in the TCI information group, the carrier in the group to which the TCI information corresponding to each group acts is implicitly indicated.
  • Step 802 the terminal device determines that the second signal has a first QCL relationship with the reference signal indicated by the fifth QCL information, and/or determines that the second signal has a second QCL relationship with the reference signal indicated by the sixth QCL information.
  • the third TCI information may include TCI information of J second carriers, where J is greater than or equal to 1.
  • the number J of TCI information of the second carrier in the third TCI information is equal to the number N-1 of the second carrier currently configured by the terminal device (J is equal to N-1).
  • the terminal device determines the TCI information corresponding to the second carrier according to the carrier identifier of the second carrier.
  • the carrier identifier corresponding to the TCI information is not included in the third TCI information, and the terminal equipment, according to the order of the TCI information in the third TCI information, respectively corresponds to the carrier identifier in the TCI information group from small to large or from large to small. two carriers, so as to determine the TCI information of each second carrier.
  • the third TCI information includes TCI identifiers 21 to TCI identifiers 24, and the third TCI information includes the carrier identifiers of the second carriers corresponding to the TCI identifiers 21 to TCI identifiers 24, for example, the carrier waves respectively Carrier IDs from 1 to carrier 4.
  • the terminal device may determine that TCI identifiers 21 to 24 are TCI information corresponding to carrier 1 to carrier 4, respectively.
  • the terminal device may determine that the TCI identifiers 21 to TCI identifiers 24 are respectively carrier 1 to carrier 4 (or carrier 4 to carrier 1) correspond to TCI information respectively.
  • the third TCI information may include a TCI identifier of the second carrier, or a TCI parameter of the second carrier. If the third TCI information includes the TCI identifier of the second carrier, the terminal device determines the TCI parameter of the second carrier from the third configuration information according to the TCI identifier of the second carrier, where the TCI parameter of the second carrier includes the second carrier. Carrier's QCL information. If the third TCI information includes the TCI parameter of the second carrier, the TCI parameter of the second carrier includes the QCL information of the second carrier. Both manners can be considered as the third TCI information indicating the QCL information of the second carrier.
  • the third TCI information indicates the QCL information of the second carrier, including: the third TCI information indicates the fifth QCL information and/or the sixth QCL information of the second carrier.
  • the fifth QCL information is QCL type-D information
  • the sixth QCL information is QCL type-A information.
  • the third TCI information indicates that the QCL information of the second carrier includes fifth QCL information, and the terminal device determines the fifth QCL information as the QCL type-D information of the carrier, the second signal and the fifth reference signal indicated by the fifth QCL information There is a first QCL relationship between them. and / or
  • the third TCI information indicates that the QCL information of the second carrier includes sixth QCL information, and the terminal device determines the sixth QCL information as the QCL type-A information of the carrier, the second signal and the sixth reference signal indicated by the sixth QCL information There is a second QCL relationship between them.
  • the number J of the TCI information of the second carrier included in the TCI information group is the same as the number N-1 of the second carrier currently configured by the terminal device (that is, J is equal to N-1) as Example description.
  • the number J of TCI information of the second carrier included in the TCI information group is different from the number N-1 of the second carrier currently configured by the terminal device.
  • the number J of TCI information of the second carrier included in the third TCI information determined by the terminal device may be different from the number N ⁇ 1 of the second carriers currently configured by the terminal device.
  • the number J of TCI information of the second carrier in the third TCI information is greater than the number N-1 of the second carrier currently configured by the terminal device (J is greater than N-1).
  • the terminal device determines the TCI information corresponding to the second carrier according to the carrier identifier of the second carrier.
  • the carrier identifier corresponding to the TCI information is not included in the third TCI information, and the terminal device, according to the order of the TCI information in the third TCI information, respectively corresponds to the carrier identifier from small to large or the first N-1 TCI information in the third TCI information.
  • the second carrier from the largest to the smallest, so as to determine the TCI information of the N-1 second carrier.
  • the number J of TCI information of the second carrier in the third TCI information is less than the number N-1 of the second carrier currently configured by the terminal device (J is less than N-1).
  • the terminal device determines the TCI information corresponding to the second carrier according to the carrier identifier of the second carrier. If the third TCI information does not include the carrier identifier corresponding to the TCI information, the terminal device sequentially determines the J pieces of TCI information as the TCIs of the first J carriers in the N-1 second carriers according to the order of the TCI information in the third TCI information information.
  • the third TCI information may include TCI information and group identifiers corresponding to each group.
  • the carriers included in each group in the third TCI information together form the carriers configured on the terminal device.
  • the 2 carriers included in the first group and the second group include 2 carriers.
  • the 3 carriers in the terminal device together form 5 carriers configured in the terminal device, and the first group corresponds to a group identifier 1, and the second group corresponds to a group identifier 2.
  • the terminal device determines, based on the group identifier 1, to apply the TCI parameters (including the QCL type-D information) corresponding to the TCI identifier 20 on carrier 0 and carrier 1 in the first group.
  • the second grouping includes TCI identifier 22 and grouping identifier 2, and the terminal device determines, based on grouping identifier 2, to apply the TCI parameter (including QCL type-A information) corresponding to TCI identifier 22 to carrier 2 in the second grouping. to carrier 4.
  • the TCI information group also includes the carrier identifier corresponding to the TCI information for each grouping.
  • the TCI identification group 2 includes the first grouping and the second grouping.
  • the first grouping includes the carrier identifier of the carrier 0 corresponding to the TCI identifier 20 and the TCI identifier 20, and the terminal device determines, based on the carrier identifier of the carrier 0, that the TCI parameter (including the QCL type-D information) corresponding to the TCI identifier 20 acts on the carrier 0, and on carrier 1 in the same group as carrier 0.
  • the second grouping includes TCI identifier 22 and the carrier identifier of carrier 2 corresponding to TCI identifier 22, and the terminal device determines the TCI parameter (including QCL type-A information) corresponding to TCI identifier 22 based on the carrier identifier of carrier 2. on carrier 2, and on carrier 3 and carrier 4 in the same group as carrier 2.
  • the terminal device determines the first QCL information and/or the second QCL information acting on the first carrier according to the first TCI information.
  • the terminal equipment is configured with second configuration information, the second configuration information includes multiple TCI information groups, and the TCI information group includes the TCI information of the carrier (including the TCI information of the first carrier and the TCI information of the second carrier. ).
  • the terminal device receives the first TCI information, and the first TCI information is used to determine a group of TCI information from multiple TCI information groups, so as to determine the TCI information of the second carrier. Fifth QCL information and/or sixth QCL information of the carrier.
  • the terminal equipment can determine the QCL information on multiple carriers after receiving the first TCI information once, especially the QCL Type-A information on multiple carriers, which is helpful for the terminal equipment on multiple second carriers.
  • the QCL Type A information provided by the appropriate reference signal is indicated, and the signaling overhead of this method is small.
  • the methods and operations implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be used in the terminal device, and the methods and operations implemented by the network device can also be implemented by A component (eg, chip or circuit) implementation that can be used in a network device.
  • components such as chips or circuits
  • a component eg, chip or circuit
  • the methods provided by the embodiments of the present application are respectively introduced from the perspective of interaction between various devices.
  • the terminal device and the network device may include hardware structures and/or software modules, and the above functions are implemented in the form of hardware structures, software modules, or hardware structures plus software modules. . Whether one of the above functions is performed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.
  • each functional module in each embodiment of the present application may be integrated into one processor, or may exist physically alone, or two or more modules may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.
  • FIG. 9 and FIG. 10 are schematic structural diagrams of possible communication apparatuses provided by the present application. These communication apparatuses can be used to implement the functions of the terminal equipment in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments.
  • the communication apparatus may be the terminal device as shown in FIG. 2 , or may be a module (eg, a chip or a circuit) applied to the terminal device.
  • the apparatus 900 includes: a processing unit 901 and a communication unit 902 .
  • the communication unit 902 is configured to receive the first TCI information from the network device, where the first TCI information indicates the first QCL information and/or the second QCL information; the processing unit 901 is configured to determine whether the first signal is related to the first TCI information and/or the second QCL information.
  • the reference signal indicated by the first QCL information has a first QCL relationship and/or has a second QCL relationship with the reference signal indicated by the second QCL information, and the QCL corresponding to the second signal is determined according to the first TCI information
  • the first signal is a signal transmitted between the apparatus 900 carried on the first carrier and the network device
  • the second signal is the apparatus 900 carried on the second carrier and the network device Signals transmitted between the network devices.
  • the first carrier is used to receive the first TCI information, or the first carrier is the primary carrier of the apparatus 900 .
  • the first QCL relationship instructs the apparatus 900 to determine the spatial reception parameter information of the first signal according to the reference signal indicated by the first QCL information; the second QCL relationship indicates the The apparatus 900 determines one or more of Doppler frequency shift, Doppler spread, average delay, and delay spread of the first signal according to the reference signal indicated by the second QCL information.
  • the processing unit 901 is specifically configured to determine that the second signal and the reference signal indicated by the first QCL information have the first QCL relationship.
  • the communication unit 902 is further configured to receive first indication information from the network device; the processing unit 901 is further configured to determine second TCI information from the first configuration information, the The first configuration information includes a plurality of first correspondences, the first correspondence includes indication information and TCI information corresponding to the indication information, and the TCI information corresponding to the first indication information in the plurality of first correspondences is the the second TCI information, the second TCI information indicates the third QCL information; the processing unit 901 is further configured to determine that the second signal and the reference signal indicated by the third QCL information have the second QCL relationship .
  • the first configuration information is further configured with the second QCL relationship between the second signal and the reference signal indicated by the third QCL information in the second signal. Effective time.
  • the second TCI information also indicates fourth QCL information
  • the processing unit 901 is further configured to update the first QCL relationship of the second signal, and the updated second signal's first QCL relationship.
  • the reference signal included in the first QCL relationship is the reference signal indicated by the fourth QCL information.
  • the second carrier is used to receive the first indication information.
  • the processing unit 901 is specifically configured to determine the third TCI information from the second configuration information, where the second configuration information includes a plurality of second correspondences, and the second correspondences include the first carrier
  • the TCI information of the second carrier corresponding to the TCI information of the first carrier and the TCI information of the second carrier corresponding to the TCI information of the first carrier, the TCI information of the second carrier corresponding to the first TCI information in the plurality of second correspondences is the third TCI information
  • the third TCI information indicates fifth QCL information and/or sixth QCL information; and it is determined that the second signal and the reference signal indicated by the fifth QCL information have the first QCL relationship, and/or , it is determined that the second signal and the reference signal indicated by the sixth QCL information have the second QCL relationship.
  • the second correspondence includes at least one group, and at least one carrier of the apparatus 900 in the group corresponds to the same QCL information.
  • FIG. 10 shows an apparatus 1000 provided by an embodiment of the present application.
  • the apparatus shown in FIG. 10 may be a hardware circuit implementation of the apparatus shown in FIG. 9 .
  • the communication apparatus can be applied to the flow chart shown above to execute the functions of the first terminal device or the second terminal device in the above method embodiments.
  • FIG. 10 only shows the main components of the communication device.
  • the apparatus 1000 may also include at least one memory 1030 for storing program instructions and/or data.
  • Memory 1030 is coupled to processor 1020 .
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 1020 may cooperate with the memory 1030 .
  • Processor 1020 may execute program instructions stored in memory 1030 . At least one of the at least one memory may be included in the processor.
  • the apparatus 1000 shown in FIG. 10 includes at least one processor 1020 and a communication interface 1010 , and the processor 1020 is configured to execute the instructions or programs stored in the memory 1030 .
  • the processor 1020 is configured to perform the operations performed by the processing unit 901 in the foregoing embodiments
  • the communication interface 1010 is configured to perform the operations performed by the communication unit 902 in the foregoing embodiments.
  • the communication interface may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces.
  • the transceiver when the communication interface is a transceiver, the transceiver may include an independent receiver and an independent transmitter; it may also be a transceiver integrating a transceiver function, or a communication interface.
  • the apparatus 1000 may also include a communication line 1040 .
  • the communication interface 1010, the processor 1020 and the memory 1030 may be connected to each other through a communication line 1040; the communication line 1040 may be a peripheral component interconnect (PCI for short) bus or an extended industry standard architecture (extended industry standard architecture). , referred to as EISA) bus and so on.
  • the communication line 1040 can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 10, but it does not mean that there is only one bus or one type of bus.
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, etc.) having computer-usable program code embodied therein.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

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

Abstract

L'invention concerne un procédé et un appareil de communication. Le procédé comprend les étapes suivantes : un dispositif terminal reçoit des premières informations d'indication de configuration de transmission (TCI) provenant d'un dispositif de réseau, les premières informations TCI indiquant des premières informations QCL et/ou des secondes informations QCL ; et le dispositif terminal détermine qu'un premier signal a une première relation QCL avec un signal de référence indiqué par les premières informations QCL et/ou a une seconde relation QCL avec un signal de référence indiqué par les secondes informations QCL, et détermine la relation QCL correspondant à un second signal selon les premières informations TCI, le premier signal étant un signal transmis entre un dispositif terminal porté sur une première porteuse et le dispositif de réseau, et le second signal est le signal transmis entre un dispositif terminal porté sur une seconde porteuse et le dispositif de réseau. La solution technique est utilisée pour indiquer la relation QCL pour de multiples porteuses du dispositif terminal.
PCT/CN2020/122288 2020-10-20 2020-10-20 Procédé et appareil de communication WO2022082462A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190239093A1 (en) * 2018-03-19 2019-08-01 Intel Corporation Beam indication information transmission
CN110637438A (zh) * 2017-05-12 2019-12-31 高通股份有限公司 跨子带准共置信令
CN111082909A (zh) * 2019-08-15 2020-04-28 中兴通讯股份有限公司 准共址假设的确定方法及装置、存储介质和电子装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110637438A (zh) * 2017-05-12 2019-12-31 高通股份有限公司 跨子带准共置信令
US20190239093A1 (en) * 2018-03-19 2019-08-01 Intel Corporation Beam indication information transmission
CN111082909A (zh) * 2019-08-15 2020-04-28 中兴通讯股份有限公司 准共址假设的确定方法及装置、存储介质和电子装置

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