WO2021088036A1 - 一种传输配置编号状态指示方法及装置 - Google Patents

一种传输配置编号状态指示方法及装置 Download PDF

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Publication number
WO2021088036A1
WO2021088036A1 PCT/CN2019/116823 CN2019116823W WO2021088036A1 WO 2021088036 A1 WO2021088036 A1 WO 2021088036A1 CN 2019116823 W CN2019116823 W CN 2019116823W WO 2021088036 A1 WO2021088036 A1 WO 2021088036A1
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WIPO (PCT)
Prior art keywords
tci
state
states
list
group
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PCT/CN2019/116823
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English (en)
French (fr)
Inventor
樊波
张希
管鹏
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华为技术有限公司
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Priority to PCT/CN2019/116823 priority Critical patent/WO2021088036A1/zh
Publication of WO2021088036A1 publication Critical patent/WO2021088036A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • This application relates to the field of wireless communication technology, and in particular to a method and device for indicating the status of a transmission configuration number.
  • the 5th generation (5G) mobile communication system uses high-frequency communication, that is, uses ultra-high frequency band (for example, a frequency band greater than 6 GHz) to transmit data.
  • ultra-high frequency band for example, a frequency band greater than 6 GHz
  • One of the main problems of high-frequency communication is that the signal energy drops sharply with the transmission distance, resulting in a short signal transmission distance.
  • high-frequency communication adopts analog beam technology and performs weighting processing through a large-scale antenna array to concentrate the signal energy in a smaller range to form a beam, thereby increasing the transmission distance.
  • Network equipment can generate different beams, pointing to different transmission directions.
  • the network device may use multiple beams or multiple transmitter receiver points (TRP) to transmit data to the terminal device.
  • TRP transmitter receiver points
  • a network device uses multiple beams or multiple TRPs to transmit data to a terminal device, it needs to inform the terminal device which beams or TRPs it uses to transmit data, so that the terminal device can use the receiving beam corresponding to the sending beam to receive the network. Data sent by the device.
  • the purpose of the embodiments of the present application is to provide a method and device for indicating the status of a transmission configuration number to solve the problem of how to indicate the status of multiple transmission configuration numbers.
  • the present application provides a method, including: sending a first message, the first message indicating P transmission configuration number state TCI-state groups, and each TCI-state in the P TCI-state groups
  • the group includes at least one TCI-state, and P is an integer greater than 1.
  • the first TCI-state group is determined from the P TCI-state groups, and a second message is sent to the terminal device.
  • the TCI in the second message The field is used to indicate the first TCI-state group; wherein, the P TCI-state groups correspond to the P TCI field values of the TCI field in the second message in a one-to-one correspondence; the first TCI-state The group is used to transmit downlink data to the terminal device.
  • the network device can indicate or activate P TCI-state groups to the terminal device.
  • Each TCI-state group can include multiple TCI-states, thereby enabling transmission based on multiple TRPs or multiple TCI-states.
  • the first message indicating P TCI-state groups includes:
  • the first message indicates Q TCI-state lists, and each TCI-state list in the Q TCI-state lists includes at most P TCI-states, where Q is an integer greater than 1, and the Q TCI-states Each TCI-state in the state list is paired one by one in a preset order to form the P TCI-state groups.
  • the preset order is the order of the TCI-states in the TCI-state list, or the preset order is the order of sorting according to the size of the TCI-state index;
  • the preset order is the arrangement order of the TCI-states in the TCI-state list, in each TCI-state list in the Q TCI-state lists, TCI states with the same arrangement order are paired into a TCI-state group;
  • the preset order is that the index of the TCI-state in the TCI-state list is from small to large or from large to small, in each TCI-state list of the Q TCI-state lists, the index size is the same
  • the TCI state is paired into a TCI-state group.
  • the first TCI-state group includes multiple identical TCI-states, it means that the TCI-state is used for downlink data transmission; or, if the first TCI-state is The group includes one TCI-state and one or more preset indexes, indicating that the TCI-state is used for downlink data transmission.
  • the present application also provides a communication device that has any method provided in the first aspect.
  • the communication device can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more units or units corresponding to the above-mentioned functions.
  • the communication device includes a processor configured to support the communication device to perform the corresponding function of the network device in the method shown above.
  • the communication device may also include a memory, and the storage may be coupled with the processor, which stores program instructions and data necessary for the communication device.
  • the communication device further includes a communication interface, and the communication interface is used to support communication between the communication device and equipment such as network equipment.
  • the communication device includes corresponding functional units, which are respectively used to implement the steps in the above method.
  • the function can be realized by hardware, or the corresponding software can be executed by hardware.
  • the hardware or software includes one or more units corresponding to the above-mentioned functions.
  • the structure of the communication device includes a processing unit and a communication unit, and these units can perform corresponding functions in the foregoing method examples.
  • these units can perform corresponding functions in the foregoing method examples.
  • the present application provides a method, including: receiving a first message from a network device, the first message indicating P transmission configuration number state TCI-state groups, each of the P TCI-state groups A TCI-state group includes at least one TCI-state, and P is an integer greater than 1; a second message from the network device is received, and the first TCI-state group is determined according to the TCI field in the second message; the second The TCI field in the message is used to indicate the first TCI-state group; wherein, the P TCI-state groups correspond to the P TCI field values of the TCI field in the second message in a one-to-one correspondence; A TCI-state group is used to transmit downlink data to the terminal device.
  • the first message indicating P TCI-state groups includes:
  • the first message indicates Q TCI-state lists, and each TCI-state list in the Q TCI-state lists includes at most P TCI-states, where Q is an integer greater than 1;
  • Each TCI-state in the Q TCI-state lists is paired one by one in a preset order to form the P TCI-state groups.
  • the preset order is the order of the TCI-states in the TCI-state list, or the preset order is the order of sorting according to the size of the TCI-state index;
  • the preset order is the arrangement order of the TCI-states in the TCI-state list
  • TCI states with the same arrangement order are paired into one TCI-state group
  • the preset order is that the index of the TCI-state in the TCI-state list is from small to large or from large to small
  • the order of the index size is the same
  • the TCI state is paired into a TCI-state group.
  • the first TCI-state group includes multiple identical TCI-states, it means that the TCI-state is used for downlink data transmission; or, if the first TCI-state is The group includes one TCI-state and one or more preset indexes, indicating that the TCI-state is used for downlink data transmission.
  • the present application also provides a communication device having any method provided in the third aspect.
  • the communication device can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more units or units corresponding to the above-mentioned functions.
  • the communication device includes a processor configured to support the communication device to perform corresponding functions of the terminal device in the above-mentioned method.
  • the communication device may also include a memory, and the storage may be coupled with the processor, which stores program instructions and data necessary for the communication device.
  • the communication device further includes a communication interface, and the communication interface is used to support communication between the communication device and equipment such as network equipment.
  • the communication device includes corresponding functional units, which are respectively used to implement the steps in the above method.
  • the function can be realized by hardware, or the corresponding software can be executed by hardware.
  • the hardware or software includes one or more units corresponding to the above-mentioned functions.
  • the structure of the communication device includes a processing unit and a communication unit, and these units can perform corresponding functions in the foregoing method examples.
  • these units can perform corresponding functions in the foregoing method examples.
  • the present application provides a communication device that includes a processor, and when the processor executes a computer program or instruction in a memory, the method described in the first aspect is executed.
  • the present application provides a communication device that includes a processor, and when the processor executes a computer program or instruction in a memory, the method described in the third aspect is executed.
  • the present application provides a communication device, the communication device includes a processor and a memory, the memory is used to store computer programs or instructions; the processor is used to execute the computer programs or instructions stored in the memory, So that the communication device executes the corresponding method as shown in the first aspect.
  • the present application provides a communication device, the communication device includes a processor and a memory, the memory is used to store computer programs or instructions; the processor is used to execute the computer programs or instructions stored in the memory, So that the communication device executes the corresponding method as shown in the third aspect.
  • the present application provides a communication device that includes a processor, a memory, and a transceiver.
  • the transceiver is used to receive signals or send signals; and the memory is used to store computer programs or instructions;
  • the processor is configured to call the computer program or instruction from the memory to execute the method described in the first aspect.
  • the present application provides a communication device, the communication device includes a processor, a memory, and a transceiver, the transceiver is used to receive signals or send signals; the memory is used to store computer programs or instructions; The processor is configured to call the computer program or instruction from the memory to execute the method described in the third aspect.
  • the present application provides a communication device.
  • the communication device includes a processor and an interface circuit.
  • the interface circuit is configured to receive code instructions and transmit them to the processor; the processor runs the code Instructions to perform the corresponding method as shown in the first aspect.
  • the present application provides a communication device, the communication device includes a processor and an interface circuit, the interface circuit is configured to receive code instructions and transmit them to the processor; the processor runs the code Instructions to perform the corresponding method as shown in the third aspect.
  • this application provides a computer-readable storage medium for storing a computer program or instruction.
  • the computer reads and executes the computer program or instruction, the computer program or instruction The described method is implemented.
  • this application provides a computer-readable storage medium for storing a computer program or instruction.
  • the computer reads and executes the computer program or instruction, the computer program or instruction is The described method is implemented.
  • the present application provides a computer program product including instructions.
  • the computer reads and executes the computer program product, the method described in the first aspect is realized.
  • the present application provides a computer program product including instructions.
  • the computer reads and executes the computer program product, the method described in the third aspect is realized.
  • the present application provides a chip including a processor, the processor is coupled with a memory, and is configured to execute a computer program or instruction stored in the memory.
  • the processor executes the computer program or instruction At this time, the method described in the first aspect is realized.
  • the present application provides a chip including a processor coupled to a memory and configured to execute a computer program or instruction stored in the memory.
  • the processor executes the computer program or instruction At this time, the method described in the third aspect is realized.
  • the present application provides a system, including the terminal device provided in the foregoing second aspect and the network device provided in the foregoing fourth aspect.
  • FIG. 1 is a schematic diagram of the architecture of a communication system applicable to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of a method for indicating the status of a transmission configuration number provided by an embodiment of the application
  • FIG. 3 is a schematic diagram of a resource symbol provided by an embodiment of the application.
  • FIG. 4 is a schematic flowchart of a method for indicating the status of a transmission configuration number provided by an embodiment of the application
  • FIG. 5 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • Fig. 6 is a schematic structural diagram of a communication device provided by an embodiment of the application.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System of Mobile Communication
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • 5G 5th Generation
  • NR New Radio
  • FIG. 1 shows the architecture of a possible communication system suitable for the method provided in the embodiments of the present application.
  • the architecture of the communication system includes a network device and at least one terminal device, wherein: the network device can pass through different directions
  • the beam establishes a communication link with at least one terminal device (for example, the terminal device 1 and the terminal device 2 shown in the figure).
  • the network device may provide services related to wireless access for the at least one terminal device, and implement one or more of the following functions: wireless physical layer function, resource scheduling and wireless resource management, quality of service , Qos) management, wireless access control and mobility management functions.
  • the at least one terminal device may also form a beam to perform data transmission with the network device. In this embodiment, the network device and at least one terminal device can communicate with each other through a beam.
  • FIG. 1 is not limited to only include the devices shown in the figure, and may also include other devices not shown in the figure, which are not specifically listed here in this application.
  • Reference signal resources In this embodiment of the application, the resources used by the network device to send reference signals may be referred to as reference signal resources.
  • the reference signal may be any of the following signals: synchronization signal, broadcast channel, synchronization signal broadcast channel block ( Synchronization Signal and PBCH Block, SSB), broadcast signal demodulation signal, channel state information downlink signal (channel state information reference signal, CSI-RS), cell-specific reference signal (CS-RS), terminal-specific reference Signal (user equipment specific reference signal, US-RS), downlink control channel demodulation reference signal, downlink data channel demodulation reference signal, downlink phase noise tracking signal, sounding reference signal (Sounding Reference Signal, SRS), etc.
  • a beam is a communication resource.
  • the beam can be a wide beam, or a narrow beam, or other types of beams.
  • the beam forming technology may be beamforming technology or other technical means.
  • the beamforming technology may specifically be a digital beamforming technology, an analog beamforming technology, and a hybrid digital/analog beamforming technology. Different beams can be considered as different resources.
  • the same information or different information can be sent through different beams.
  • multiple beams with the same or similar communication characteristics may be regarded as one beam.
  • a beam can include one or more antenna ports for transmitting data channels, control channels, and sounding signals.
  • a transmit beam can refer to the distribution of signal strength formed in different directions in space after a signal is emitted by 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 is understandable that one or more antenna ports forming a beam can also be regarded as an antenna port set. The embodiment of the beam in the agreement can still be a spatial filter.
  • the embodiment of the beam in the NR protocol can be a spatial domain filter, or a spatial filter, or a spatial parameter (such as a spatial receiving parameter and a spatial sending parameter).
  • the beam used to transmit a signal can be called a transmission beam (Tx beam), or it can be called a spatial domain transmission filter, a spatial transmission filter, and a spatial domain transmission parameter (spatial domain). parameter) or spatial transmission parameter.
  • the beam used to receive the signal can be called a reception beam (Rx beam), or it can be called a spatial domain reception filter, a spatial reception filter, and a spatial domain reception parameter (spatial domain). reception parameter) or spatial reception parameter.
  • Quasi co-located If the large-scale characteristics of the channel of a certain symbol transmitted on one antenna port can be derived from the channel of a certain symbol transmitted on another antenna port, the two The antenna ports are said to be quasi-co-located, which can describe the two antenna ports as having the property of quasi-co-location, or it can be described that the two antenna ports have a quasi-co-location relationship.
  • the QCL relationship is used to indicate that multiple resources have one or more identical or similar communication characteristics.
  • the same or similar communication configuration can be used. For example, if two signals are transmitted from two different antenna ports and the large-scale characteristics experienced are the same, then the two antenna ports can be considered to have a QCL relationship. Then the large-scale characteristics of the channel/channel estimation result of one symbol transmitted by one port can be obtained from the other The large-scale characteristic of the channel that a port transmits a symbol is inferred, which is conducive to receiver processing. Large-scale features include one or more delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift, average gain, average delay (average delay), spatial reception parameters (patial Rx) parameter).
  • QCL types (Type) can be divided into four types: QCL-TypeA, QCL-TypeB, QCL-TypeC and QCL-TypeD.
  • the parameters of QCL-TypeA are: ⁇ Doppler shift, Doppler spread, average delay, delay spread ⁇ ;
  • the parameters of QCL-TypeB are: ⁇ Doppler shift, Doppler spread ⁇ ;
  • the parameters of QCL-TypeC are: ⁇ Doppler shift, average delay ⁇ ;
  • the parameter of QCL-TypeD is: ⁇ Spatial Rx parameter ⁇ .
  • the English QCL-type D relationship can be described as "for the purpose of determining the CORESET, a Synchronization/PBCH block is considered to have different QCL-TypeD properties than a CSI-RS", and the corresponding translation is "for the purpose of determining the CORESET to monitor the PDCCH.
  • a synchronization/physical broadcast channel block (SS/PBCH) and a channel state information measurement reference signal (Channel State Information Reference Signal, CSI-RS) have different type D quasi-co-location properties.”
  • CSI-RS Channel State Information Reference Signal
  • a narrow beam may be obtained from a wide beam through beam refinement, it is still considered a wide beam.
  • the narrow beam and the narrow beam are two different beams, and their beam information is different, that is, the quasi-coordinate properties of type D are different.
  • QCL-type D is used to assist beamforming, such as forming spatial filters, beam indicators, etc.
  • QCL-TypeD it can be understood from two perspectives: the sending end and the receiving end. From the perspective of the transmitting end, if the two antenna ports are of QCL-TypeD, it means that the corresponding beam directions of the two antenna ports are spatially consistent. From the perspective of the receiving end, if the two antenna ports are QCL-TypeD, it means that the receiving end can receive the signals sent by the two antenna ports in the same beam direction.
  • references described in this specification to "one embodiment” or “some embodiments”, etc. mean that one or more embodiments of the present application include a specific feature, structure, or characteristic described in conjunction with the embodiment. Therefore, the sentences “in one embodiment”, “in some embodiments”, “in some other embodiments”, “in some other embodiments”, etc. appearing in different places in this specification are not necessarily All refer to the same embodiment, but mean “one or more but not all embodiments” unless it is specifically emphasized otherwise.
  • the terms “including”, “including”, “having” and their variations all mean “including but not limited to”, unless otherwise specifically emphasized.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an “or” relationship.
  • the following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • at least one item (a) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
  • the terminal equipment in the embodiments of this application may refer to user equipment, access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the terminal device can also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network or future evolution of the public land mobile network (Public Land Mobile Network, PLMN) Terminal equipment, etc., which are not limited in the embodiment of the present application.
  • Public Land Mobile Network, PLMN Public Land Mobile Network
  • the terminal device may include: a radio resource control (radio resource control, RRC) signaling interaction module, a media access control (media access control, MAC) signaling interaction module, and physical (PHY) signaling Interactive module.
  • RRC radio resource control
  • MAC media access control
  • PHY physical
  • the RRC signaling interaction module may be: a module used by network equipment and terminal equipment to send and receive RRC signaling.
  • the MAC signaling interaction module may be a module used by network equipment and terminal equipment to send and receive MAC control element (CE) signaling.
  • CE MAC control element
  • the PHY signaling and data may be a module used by network equipment and terminal equipment to send and receive uplink control signaling or downlink control signaling, uplink and downlink data or downlink data.
  • the network device in the embodiment of the application may be a device used to communicate with terminal devices, and the network device may be a Global System of Mobile Communication (GSM) system or Code Division Multiple Access (CDMA)
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • BTS Base Transceiver Station
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • WCDMA Wideband Code Division Multiple Access
  • Evolutional Base Station Evolution
  • NodeB eNB or eNodeB
  • it can also be a wireless controller in the cloud radio access network (Cloud Radio Access Network, CRAN) scenario
  • the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, and the future
  • the access network equipment in the 5G network for example, gNB or the access network equipment in the future evolved PLMN network, etc., are not limited in the embodiment of the present application.
  • the network equipment may also include: an RRC signaling interaction module, a MAC signaling interaction module, and a PHY signaling interaction module.
  • the network device may include a centralized unit (CU) and a distributed unit (DU).
  • the network device may also include an active antenna unit (AAU).
  • CU implements some functions of network equipment, and DU implements some functions of network equipment.
  • CU is responsible for processing non-real-time protocols and services, implementing radio resource control (RRC), and packet data convergence protocol, PDCP) layer function.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • the DU is responsible for processing the physical layer protocol and real-time services, and realizes the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer.
  • RLC radio link control
  • MAC media access control
  • PHY physical layer
  • the network device may be a device that includes one or more of a CU node, a DU node, and an AAU node.
  • the CU can be divided into network equipment in an access network (radio access network, RAN), and the CU can also be divided into network equipment in a core network (core network, CN), which is not limited in this application.
  • the interaction between the terminal device and the network device is taken as an example for description.
  • the method provided in the embodiment of this application can also be applied to the interaction between other execution subjects.
  • it can be a terminal device chip or module, and
  • the execution subject is a chip or module, reference may be made to the description in the embodiment of the present application, and details are not repeated here.
  • the network device In downlink data transmission, when a network device uses a specific beam to send data to a terminal device, it needs to inform the terminal device of the transmission beam information it uses, so that the terminal device can use the receiving beam corresponding to the transmission beam to receive the network device The data sent.
  • the network device indicates to the terminal device related information about the transmission beam used by it through the TCI (transmission configuration index, transmission configuration number) field in the downlink control information (downlink control information, DCI).
  • the TCI field includes 3 bits, which can specifically represent 8 different values (codepoints). Each value of the TCI field corresponds to an index of a transmission configuration number state (TCI-state), and the index can identify a TCI-state.
  • the TCI-state includes multiple parameters, through which the relevant information of the transmission beam can be determined.
  • the TCI-state is configured by the network device to the terminal device.
  • the TCI-state may include a TCI-state identifier and two QCL information (QCL-Info).
  • the TCI-state identifier can be regarded as an index of the TCI-state, indicating a TCI-state.
  • Each QCL-Info includes a cell field and a bandwidth part (Bandwidth part, BWP) identification field, which respectively indicate the application of the TCI-state Which bwp of which cell, that is, different cells or different bwps of the same cell can be configured with different QCL-Info.
  • QCL-Info also includes a reference signal (reference Signal) field, which is used to indicate which reference signal resource forms a quasi-coordinate relationship with the TCI-state.
  • beam generally does not appear, and beams are generally replaced by other terms.
  • beams correspond to reference signal resources, and one beam corresponds to one reference signal resource. Therefore, in the embodiments of the present application, the description of "which reference signal resource forms the QCL relationship between the TCI-state and” essentially refers to which beam forms the QCL relationship between the TCI-state and the TCI-state.
  • the QCL relationship means that two reference signal resources (or two antenna ports, the antenna port and the reference signal resource are also in a one-to-one correspondence) have some same spatial parameters.
  • the QCL type field can have four values, namely typeA, typeB, typeC, and typeD. Taking typeD as an example, typeD indicates that two reference signal resources have the same spatial receiving parameter information, that is, the two beams have the same receiving beam. At most one of the two QCL-Info included in the TCI-state may be TypeD.
  • multiple TCI-states need to be configured for the terminal device. After the network device is configured with multiple TCI-states, it also needs to activate at least one of the TCI-states. After the network device activates at least one TCI-state, it will also indicate to the terminal device one of the activated TCI-states. For example, the value of the TCI field in the DCI sent by the network device to the terminal device is 000, which represents the TCI-state corresponding to 000 used by the data transmission beam.
  • the referenceSignal included in the QCL-Info with typeD in the TCI-state is the CSI-RS with index #1, indicating that the beam used for data transmission is the same as the receiving beam corresponding to the CSI-RS with index #1.
  • the receiving beam corresponding to the CSI-RS with index #1 can be determined through a beam measurement procedure, which is known to the terminal device. Therefore, by indicating the TCI-state, the terminal device can determine the receiving beam corresponding to the data transmission beam, and thus adopt the corresponding receiving beam to receive the downlink data sent by the network device.
  • the method provided in the embodiments of the present application can be used to indicate downlink transmission reception beam information or TCI-state, and can also be used to indicate uplink transmission transmission beam information or spatial relations.
  • the transmit beam information or spatial relationship of uplink transmission it is only necessary to replace the TCI-state in the following method with spatial relation or sounding reference signal (Sounding Reference Signal) resource indicator.
  • Sounding Reference Signal Sounding Reference Signal
  • FIG. 2 it is a schematic flowchart of a method for indicating the status of a transmission configuration number provided by an embodiment of this application. Referring to Figure 2, the method includes:
  • Step 200 The network device configures multiple TCI-states for the terminal device.
  • the network device can configure multiple TCI-states through RRC signaling. For details, please refer to the description in the prior art, which will not be repeated here. Multiple TCI-states configured by the network device are used for downlink data transmission. Currently, the downlink data sent to the terminal device is generally carried by the PDSCH, so the multiple TCI-states configured by the network device may also refer to the TCI-states used for the physical downlink shared channel (PDSCH).
  • PDSCH physical downlink shared channel
  • Step 201 The network device sends the first message.
  • the first message indicates or activates P TCI-state groups; each TCI-state group in the P TCI-state groups includes at least one TCI-state, and P is an integer greater than 1.
  • the TCI-states included in the P TCI-state groups are selected by the network device from a plurality of configured TCI-states. The specific selection is not limited in the embodiment of the present application.
  • the first message may be MAC CE signaling or other signaling, such as RRC signaling or DCI signaling, which is not limited in the embodiment of the present application.
  • the first message instructs P TCI-state groups and the first message to activate P TCI-state groups has the same meaning.
  • this application uses “instructions” uniformly, but it should be understood that "instructions” are also Can be replaced with “activation”.
  • Step 202 The terminal device receives the first message from the network device.
  • Step 203 The network device determines the first TCI-state group from the P TCI-state groups, and sends a second message to the terminal device.
  • the first TCI-state group is a TCI-state group used to transmit downlink data to the terminal device; the second message is used to indicate the first TCI-state group.
  • the second message includes a TCI (Transmission configuration indication) field, and the P TCI-state groups correspond to P TCI field values of the TCI field in the second message in a one-to-one correspondence.
  • the TCI field of may be used to indicate the first TCI-state group.
  • the TCI field includes 3 bits, which can specifically represent 8 different TCI field values (codepoints).
  • Each TCI field value in the TCI field corresponds to a TCI-state group, and the network device can then indicate its adoption to the terminal device through the TCI field.
  • the TCI-state group The number of TCI field values in the TCI field can be greater than or equal to P.
  • the second message may be DCI signaling or other signaling, such as RRC signaling or MAC CE signaling, which is not limited in the embodiment of the present application.
  • Step 204 The terminal device receives the second message from the network device, and determines the first TCI-state group according to the second message.
  • the network device can indicate or activate P TCI-state groups to the terminal device.
  • Each TCI-state group can include multiple TCI-states, thereby enabling transmission based on multiple TRPs or multiple TCI-states.
  • the network device may indicate the P TCI-state groups in various ways.
  • the network device may indicate the P TCI-state groups through a first message.
  • the first message may carry the TCI-state included in each TCI-state group in the P TCI-state groups. .
  • the network device may indirectly indicate P TCI-state groups.
  • the P TCI-state groups are formed by pairing the TCI-states in the Q TCI-state lists in a preset order.
  • each TCI-state list in the Q TCI-state lists is associated with a beam or TRP, indicating that the TCI-state in the TCI-state list is used for the beam or TRP to transmit downlink data.
  • Each TCI-state list in the Q TCI-state lists includes at least one TCI-state, and Q is an integer greater than 1.
  • Method 1 Use the TCI-state index to indicate the activated TCI-state.
  • the first message sent by the network device may include Q TCI-state index lists, and each of the Q TCI-state index lists may include one or more TCI-states. index of.
  • the Q TCI-state index lists may be carried by a single first message, and may also be carried by Q first messages respectively.
  • Method 2 Use a bitmap to represent the activated TCI-state.
  • the first message sent by the network device may include Q bitmaps, and each bitmap in the Q bitmaps is used to indicate one TCI-state list in the Q TCI-state lists TCI-state included in.
  • each bit in each bitmap corresponds to a TCI-state
  • a bit value of 1 indicates that the TCI-state is activated
  • a bit value of 0 indicates that the TCI-state is not activated
  • all TCIs with a bit value of 1 -state forms the corresponding TCI-state list.
  • a bit value of 0 indicates that the TCI-state is activated
  • a bit value of 1 indicates that the TCI-state is not activated
  • all TCI-states with a bit value of 0 form a corresponding TCI-state list.
  • the above Q bitmaps may be carried by a single first message, or may be carried by Q first messages respectively.
  • the network device indicates the Q TCI-state lists through the first message, and the TCI-states in the Q TCI-state lists are paired in a preset order to form P TCI-state groups.
  • the Q TCI-state lists can be indicated by one first message, or can be indicated by multiple first messages, which is not limited in the embodiment of the present application, for example, by Q first messages.
  • Each first message indicates a TCI-state list.
  • the pairing described in the embodiment of this application takes one TCI-state from multiple TCI-state lists to form a TCI-state group, and this TCI-state group can be mapped to a TCI field value. Pairing can also be expressed as correspondence, mapping, etc., which is not limited in the embodiment of the present application.
  • mapping between TCI-state and TCI-state there may be two implementation methods:
  • TCI-state and TCI-state in each TCI-state list are first paired into a TCI-state group, and then the TCI-state group is mapped to the TCI field value;
  • TCI-state lists as an example, namely List One and List Two.
  • the sequence of TCI-state included in List 1 is TCI-state#1, TCI-state#3, and the sequence of TCI-state included in List Two is TCI-state#2, TCI-state#5.
  • you can pair to form two TCI-state groups namely ⁇ TCI-state#1,TCI-state#2 ⁇ , ⁇ TCI-state#3,TCI-state#5 ⁇ , and the corresponding TCI field value can be 0 respectively ,1.
  • TCI-state in each TCI-state list is independently mapped to each TCI field value, and the TCI-state mapped to the same TCI field value is used as a group for PDSCH transmission, that is, the network device indicates one through DCI
  • the TCI field value is given to the terminal device, and the terminal device receives data according to the TCI-state group corresponding to the field value.
  • TCI-state lists as an example, namely List One and List Two.
  • the sequence of TCI-state included in List 1 is TCI-state#1, TCI-state#3, and the sequence of TCI-state included in List Two is TCI-state#2, TCI-state#5.
  • TCI field values mapped to TCI-state#1 and TCI-state#3 in List 1 are 0 and 1, respectively, the TCI field values mapped to TCI-state#2 and TCI-state#5 in List 2 are 0. And 1, then you can pair to form 2 TCI-state groups, namely ⁇ TCI-state#1,TCI-state#2 ⁇ , ⁇ TCI-state#3,TCI-state#5 ⁇ , and the corresponding TCI field value can be They are 0 and 1, respectively.
  • the TCI-states in the Q TCI-state lists are paired one by one according to a preset order to form P TCI-state groups.
  • the preset order may be the order in which the TCI-state is arranged in the TCI-state list, or the preset order may be the order in which the index of the TCI-state is sorted according to the index size in the TCI-state list, etc.
  • the TCI-state in each TCI-state list is mapped to each TCI field value in the budget order.
  • the TCI-state mapped to the same TCI field value is used as a TCI-state group for PDSCH transmission.
  • the preset order is the arrangement order of the TCI-state in the TCI-state list (for example, the arrangement order of the TCI-state index in the first message)
  • TCI-states in the same order are paired into a TCI-state group.
  • the first TCI-state in the Q TCI-state lists forms the first TCI-state group, which is mapped to the TCI field value 0;
  • the second TCI-state in the Q TCI-state lists forms the first TCI-state group.
  • the two TCI-state groups are mapped to the TCI field value 1; and so on, until all TCI-states in the Q TCI-state lists are traversed.
  • the i-th TCI-state in the Q TCI-state lists forms the i-th TCI-state group, which is mapped to the TCI field value i-1;
  • each TCI-state in each TCI-state list in the Q TCI-state lists is in accordance with the TCI-state
  • the order of arrangement (from big to small or from small to small) and the order of increasing or decreasing TCI field value are mapped to each TCI field value in turn.
  • the first TCI-state in each TCI-state list is mapped to a TCI field value of 0
  • the second TCI-state is mapped to a TCI field value of 1
  • the first TCI-state in each TCI-state list is mapped to the largest TCI field value
  • the second TCI-state is mapped to the second largest TCI field value, and so on.
  • the arrangement order of the TCI-state in the TCI-state list is the arrangement order of each TCI-state included in the TCI-state list in the first message.
  • the first message indicates Q TCI-state index lists, and the TCI-states in each TCI-state index list are arranged in the first message in a certain order, which is the arrangement of TCI-state in the TCI-state list order.
  • TCI-state#1 TCI-state#3 TCI-state#6 TCI-state#4 List two TCI-state#2 TCI-state#5 TCI-state#8 TCI-state#7
  • TCI-state#1 the order of TCI-state included in List 1 is TCI-state#1, TCI-state#3, TCI-state#6, and TCI-state#4, and the order of TCI-state included in List 2 These are TCI-state#2, TCI-state#5, TCI-state#8, and TCI-state#7 in sequence.
  • TCI-state#1 in List 1 and TCI-state#2 in List 2 can be paired
  • TCI-state#3 in List 1 and TCI-state#5 in List 2 can be paired
  • TCI in List 1 -state#6 and TCI-state#8 in list 2 can be paired
  • TCI-state#4 in list 1 and TCI-state#7 in list 2 can be paired to form 4 TCI-state groups, respectively ⁇ TCI-state#1,TCI-state#2 ⁇ , ⁇ TCI-state#3,TCI-state#5 ⁇ , ⁇ TCI-state#6,TCI-state#8 ⁇ , ⁇ TCI-state#4,TCI- state#7 ⁇
  • the corresponding TCI field values can be 0, 1, 2, and 3 respectively, which are used for PDSCH transmission. For details, refer to Table 2.
  • TCI-state group TCI field value ⁇ TCI-state#1,TCI-state#2 ⁇ 0 ⁇ TCI-state#3,TCI-state#5 ⁇ 1 ⁇ TCI-state#6,TCI-state#8 ⁇ 2 ⁇ TCI-state#4,TCI-state#7 ⁇ 3
  • the preset order is that the indexes of the TCI-state are sorted according to size
  • the indexes corresponding to the same order after sorting according to the size The TCI-state is paired into a TCI-state group.
  • the index of the TCI-state can be sorted by size in the order of ascending index, or in the order of descending index.
  • each TCI-state in each TCI-state list in the Q TCI-state lists is in the order of the size of the TCI-state ( The order from big to small or from small to small) and the order of increasing or decreasing TCI field value are mapped to each TCI field value in turn.
  • the TCI-state with the smallest index in each TCI-state list is mapped to the TCI field value 0
  • the TCI-state with the second smallest index is mapped to the TCI field value 1
  • the TCI-state with the smallest index in each TCI-state list is mapped to the largest TCI field value
  • the TCI-state with the second smallest index is mapped to the second largest TCI field value, and so on.
  • the TCI-states in the Q TCI-state lists can be mapped to each TCI-state field value according to the one-to-one correspondence of the index from small to large to form each TCI-state group.
  • the TCI-state with the smallest index in the Q TCI-state lists forms the first TCI-state group, which is mapped to the TCI field value 0;
  • the TCI-state with the second smallest index in the Q TCI-state lists forms the second one
  • the TCI-state group is mapped to the TCI field value 1; and so on, until all TCI-states in the Q TCI-state lists are traversed.
  • the TCI-state with the i-th smallest index in the Q TCI-state lists forms the i-th TCI-state group, which is mapped to the TCI field value i-1;
  • the TCI-states in the Q TCI-state lists can correspond one-to-one in the order of the index from large to small to form each TCI-state group and map to each TCI-state field value.
  • the TCI-state with the largest index in the Q TCI-state lists constitutes the first TCI-state group, which is mapped to the TCI field value 0;
  • the TCI-state with the second largest index in the Q TCI-state lists constitutes the second TCI-
  • the state group is mapped to the TCI field value 1; and so on, until all TCI-states in the Q TCI-state lists have been traversed.
  • the TCI-state with the i-th largest index in the Q TCI-state lists forms the i-th TCI-state group, which is mapped to the TCI field value i-1;
  • Which of the above two preset sequences is used can be indicated by RRC signaling, or reported by the terminal device to the network device.
  • TCI-state#1 in list 1 and TCI-state#2 in list 2 can be paired
  • TCI-state#3 in list 1 and list 2 TCI-state#5 can be paired
  • TCI-state#4 in List 1 and TCI-state#7 in List 2 can be paired
  • TCI-state#6 in List 1 and TCI-state#8 in List 2 can be paired Paired to form 4 TCI-state groups, namely ⁇ TCI-state#1,TCI-state#2 ⁇ , ⁇ TCI-state#3,TCI-state#5 ⁇ , ⁇ TCI-state#4,TCI-state #7 ⁇ , ⁇ TCI-state#6, TCI-state#8 ⁇ , the corresponding TCI field values can be 0, 1, 2, and 3, respectively. Refer to Table 3 for details.
  • TCI-state group TCI field value ⁇ TCI-state#1,TCI-state#2 ⁇ 0
  • each TCI-state list in the Q TCI-state lists may be limited that the number of TCI-states included in each TCI-state list in the Q TCI-state lists is the same.
  • TCI-states in the same order can be paired one by one, and each generated TCI-state group includes the same number of TCI-states.
  • two TCI-state lists both include P TCI-states
  • the P TCI-states in the two lists are paired one by one in a preset order to form P TCI-state groups
  • each TCI-state group includes Two TCI-states.
  • P TCI-state groups can correspond to the value of the TCI field one-to-one.
  • the corresponding relationship between P TCI-state groups and the value of the TCI field may be: TCI-state group 1 corresponds to the value of the TCI field 0, and TCI-state group 2 corresponds to the value of the TCI field 1.
  • TCI-state group 1 corresponds to the TCI field value of the maximum value of the TCI field
  • TCI-state group 2 corresponds to the TCI field value of the second largest value of the TCI field. analogy.
  • TCI-state group 1 can refer to the TCI-state group consisting of the first TCI-state pair in the two TCI-state lists, or it can refer to the smallest index in the two TCI-state lists
  • TCI-state group formed by the TCI-state pairing other situations will not be repeated.
  • the number of TCI-states included in each TCI-state list in the Q TCI-state lists may also be different.
  • list one includes M TCI-states
  • list two includes N TCI-states
  • M is not equal to N.
  • N TCI-states in the M TCI-states in List 1 can be paired with the N TCI-states in List 2 in a preset order.
  • the top N TCI-states in List 1 correspond to the N TCI-states in List 2 according to the order of TCI-state in the TCI-state list to form each TCI-state. Group, and map to each TCI field value.
  • the remaining M-N TCI-states in the list 1 are mapped to the remaining TCI field values in sequence according to the order of the TCI-states in the TCI-state list.
  • the first TCI-state in List 1 and the first TCI-state in List 2 form the first TCI-state group, which is mapped to the TCI field value 0; the second TCI-state in List 1
  • the state and the second TCI-state in the list two form a second TCI-state group, which is mapped to the TCI field value 1; and so on, the Nth TCI-state in the list 1 and the Nth TCI-state in the list 2
  • the TCI-state forms the Nth TCI-state group, which is mapped to the TCI field value N-1.
  • the remaining M-N TCI-states are sequentially mapped to the TCI field values N, N+1,..., M-1 in the order of arrangement.
  • mapping relationship between the TCI-state group and the TCI field value can also be reversed, that is, the first TCI-state group is mapped to the largest TCI field value, and the second TCI-state group is mapped to the second largest TCI field value. And so on.
  • TCI-state#1 TCI-state#3 TCI-state#2 TCI-state#4 List two TCI-state#6 TCI-state#5 To To
  • the order of the M TCI-states in List 1 is TCI-state#1, TCI-state#3, TCI-state#2, and TCI-state#4, and the NM TCI-states in List 2 are arranged.
  • the order is TCI-state#6 and TCI-state#5.
  • TCI-state#1 in List 1 is paired with TCI-state#6 in List 2 to form a TCI-state group ⁇ TCI-state#1,TCI-state#6 ⁇
  • TCI-state in List 1 state#3 is paired with TCI-state#5 in the list two to form a TCI-state group ⁇ TCI-state#3,TCI-state#5 ⁇ .
  • TCI-state groups can be determined, namely ⁇ TCI-state#1,TCI-state#6 ⁇ , ⁇ TCI-state#3,TCI-state#5 ⁇ , ⁇ TCI-state#2 ⁇ , and ⁇ TCI-state#4 ⁇ correspond to TCI field values 0, 1, 2, and 3, respectively.
  • Table 5 For details, refer to Table 5.
  • TCI-state group TCI field value ⁇ TCI-state#1,TCI-state#6 ⁇ 0 ⁇ TCI-state#3,TCI-state#5 ⁇ 1 ⁇ TCI-state#2 ⁇ 2 ⁇ TCI-state#4 ⁇ 3
  • the first two TCI-state groups each include two TCI-states
  • the last two TCI-state groups each include one TCI-state.
  • the last N TCI-states in List 1 correspond to the N TCI-states in List 2 in the reverse order of the TCI-state in the TCI-state list to form each TCI. -State group, and map to each TCI field value.
  • the remaining M-N TCI-states in List 1 are mapped to the remaining TCI field values in the reverse order of the TCI-state in the TCI-state list.
  • the last TCI-state in List 1 and the last TCI-state in List 2 form the first TCI-state group, which is mapped to the TCI field value 0;
  • the penultimate TCI-state in List 1 Form the second TCI-state group with the penultimate TCI-state in List Two, and map to the TCI field value 1.
  • the Nth TCI-state from the penultimate in List One and the penultimate TCI-state in List two N TCI-states form the Nth TCI-state group, which is mapped to the TCI field value N-1.
  • the remaining M-N TCI-states are sequentially mapped to the TCI field values N, N+1,...,M-1 in the reverse order of the arrangement order.
  • mapping relationship between the TCI-state group and the TCI field value can also be reversed, that is, the first TCI-state group is mapped to the largest TCI field value, and the second TCI-state group is mapped to the second largest TCI field value. And so on.
  • TCI-state groups can be determined, namely ⁇ TCI-state#4,TCI-state#5 ⁇ , ⁇ TCI-state#2, TCI-state#6 ⁇ , ⁇ TCI-state#3 ⁇ , and ⁇ TCI-state#1 ⁇ correspond to the TCI field values 0, 1, 2, and 3, respectively.
  • Table 6 For details, refer to Table 6.
  • TCI-state group TCI field value ⁇ TCI-state#4,TCI-state#5 ⁇ 0 ⁇ TCI-state#2,TCI-state#6 ⁇ 1 ⁇ TCI-state#3 ⁇ 2 ⁇ TCI-state#1 ⁇ 3
  • N TCI-states with the smallest index in List 1 correspond one-to-one with the N TCI-states in List 2 in ascending order of index to form each TCI-state group and map to each TCI Field value.
  • the remaining M-N TCI-states in the list 1 are mapped to the remaining TCI field values in order of the index from small to large.
  • the TCI-state with the smallest index in List 1 and the TCI-state with the smallest index in List 2 form the first TCI-state group, which is mapped to the TCI field value 0;
  • the TCI-state with the second smallest index in List 1 Form the second TCI-state group with the TCI-state with the second smallest index in List 2, and map it to the TCI field value 1.
  • the N-th smallest TCI-state in List 1 and the Nth smallest TCI-state in List 2 are the same as those in List 2.
  • N small TCI-states form the Nth TCI-state group, which is mapped to the TCI field value N-1.
  • the remaining M-N TCI-states are sequentially mapped to the TCI field values N, N+1,...,M-1 in the order of the index from small to large.
  • the above-mentioned mapping relationship between the TCI-state group and the TCI field value can also be reversed, that is, the first TCI-state group is mapped to the largest TCI field value, and the second TCI-state group is mapped to the second largest TCI field value. And so on.
  • TCI-state groups can be determined, namely ⁇ TCI-state#1,TCI-state#5 ⁇ , ⁇ TCI-state#2, TCI-state#6 ⁇ , ⁇ TCI-state#3 ⁇ , and ⁇ TCI-state#4 ⁇ correspond to TCI field values of 0, 1, 2, and 3, respectively.
  • Table 7 For details, refer to Table 7.
  • TCI-state group TCI field value ⁇ TCI-state#1,TCI-state#5 ⁇ 0 ⁇ TCI-state#2,TCI-state#6 ⁇ 1 ⁇ TCI-state#3 ⁇ 2 ⁇ TCI-state#4 ⁇ 3
  • N TCI-states with the largest index in List 1 correspond to the N TCI-states in List 2 in the order of index from largest to smallest to form each TCI-state group and map to each TCI field value.
  • the remaining M-N TCI-states in Table 1 are mapped to the remaining TCI field values in order of the index from largest to smallest. That is to say, the TCI-state with the largest index in List 1 and the TCI-state with the largest index in List 2 form the first TCI-state group, which is mapped to the TCI field value of 0; the TCI-state with the second largest index in List 1 Form the second TCI-state group with the TCI-state with the second largest index in List 2, and map it to the TCI field value 1.
  • the TCI-state with the Nth largest index in List 1 is the same as the TCI-state with the second largest index in List 2.
  • N large TCI-states form the Nth TCI-state group, which is mapped to the TCI field value N-1.
  • the remaining M-N TCI-states are sequentially mapped to the TCI field values N, N+1,...,M-1 according to the index from largest to smallest.
  • the above-mentioned mapping relationship between the TCI-state group and the TCI field value can also be reversed, that is, the first TCI-state group is mapped to the largest TCI field value, and the second TCI-state group is mapped to the second largest TCI field value. And so on.
  • TCI-state groups can be determined, namely ⁇ TCI-state#4,TCI-state#6 ⁇ , ⁇ TCI-state#3, TCI-state#5 ⁇ , ⁇ TCI-state#2 ⁇ , and ⁇ TCI-state#1 ⁇ correspond to TCI field values 0, 1, 2, and 3, respectively.
  • Table 8 For details, refer to Table 8.
  • TCI-state group TCI field value ⁇ TCI-state#4,TCI-state#6 ⁇ 0 ⁇ TCI-state#3,TCI-state#5 ⁇ 1 ⁇ TCI-state#2 ⁇ 2 ⁇ TCI-state#1 ⁇ 3
  • Which one of the above four methods is used can be indicated by RRC signaling, or reported to the network device by the terminal device, or can be agreed by agreement, which is not limited in the embodiment of the present application.
  • one method is to treat the unpaired TCI-state as a TCI-state group and map it to a TCI-state field value. For example, the above four methods are in this way.
  • TCI-state group TCI field value ⁇ TCI-state#1,TCI-state#6 ⁇ 0 ⁇ TCI-state#3,TCI-state#5 ⁇ 1
  • the pairing of M TCI-states and N TCI-states can determine N available TCI-state groups.
  • the corresponding relationship between the N TCI-state groups and the TCI field value is specifically: according to the arrangement order of the N TCI-states in the corresponding list or the index of the N TCI-states in descending order or descending order
  • N TCI-state groups are generated, and N are sequentially mapped to a TCI field value.
  • the value of the TCI-state value corresponding to each TCI-state group starts from 0 and increases sequentially. Or start from the maximum value and decrease sequentially.
  • the first TCI-state group is mapped to the TCI field value of 0
  • the second TCI-state group is mapped to the TCI field value of 1, and so on.
  • the above sequence can also be reversed, the first TCI-state group is mapped to the largest TCI field value, the second TCI-state group is mapped to the penultimate TCI field value, and so on.
  • a TCI-state list may include multiple identical TCI-states.
  • TCI-state#0 TCI-state#1, TCI-state#0, TCI-state#2 ⁇
  • TCI-state#0 appears twice, which can realize one TCI-state and more Two different TCI-states are paired separately.
  • TCI-state#0 is paired with TCI-state#2 and TCI-state#3.
  • one TCI-state list cannot include the same TCI-state, that is, one TCI-state may be paired with one TCI-state, but cannot be paired with multiple different TCI-states.
  • multiple TCI-state lists may include the same TCI-state.
  • both lists include TCI-state#0.
  • two identical TCI-states can be paired, that is, the same TCI-state can be self-paired to form a TCI-state group, which is mapped to a TCI field value.
  • the TCI-state group is ⁇ TCI-state#0, TCI-state#0 ⁇ .
  • the two TCI-states included in the TCI-state group corresponding to the TCI field value may be the same.
  • TCI-state#i When the same TCI-state is self-paired to form a TCI-state group and mapped to a TCI field value, it means that a TCI-state is actually activated for the TCI field value.
  • the terminal device should think that the network device actually activates a TCI-state for the TCI field value, such as TCI-state# i, in other words, the terminal device thinks that the TCI field value corresponds to a TCI-state, that is, TCI-state#i.
  • the TCI field value 0 is mapped to two identical TCI-states, such as ⁇ TCI-state#1, TCI-state#1 ⁇ .
  • the terminal device thinks that the TCI field value 0 actually activates a TCI-state, that is, TCI-state. state#1. In other words, the terminal device considers that the TCI field value 0 actually corresponds to a single TCI-state, that is, TCI-state#1.
  • the network device will use a TCI-state, that is, TCI-state#1 for transmission, and the terminal device will use the receiving beam corresponding to TCI-state#1 for reception.
  • the terminal device can consider that the TCI field value actually corresponds to a single TCI-state, namely TCI -state#i. Or, if the network device indicates multiple (for example, two) identical TCI-state#i to the terminal device through the TCI field of the DCI, the terminal device considers that the network device adopts one TCI-state, that is, TCI-state#i. PDSCH transmission.
  • the activated TCI-state group includes multiple TCI-states, and there is no TCI-state group that includes one TCI-state.
  • the first method is to pair two identical TCI-states, which means that one TCI-state is activated. For example, pairing TCI-state#0 and TCI-state#0 indicates that TCI-state#0 is actually activated.
  • the second method is to define one or more preset indexes, such as '1111111'.
  • the TCI-state to be activated can be combined with the one or more preset indexes Paired to form a TCI-state group, corresponding to a TCI field value, indicating that a TCI-state is actually activated.
  • the one or more preset indexes may be configured by a network device, or a fixed value specified by a protocol, or a value reported by a terminal device, which is not limited in this embodiment of the application.
  • At least one TCI-state in an activated TCI-state group is used for multi-beam or multi-TRP joint transmission, that is, each beam or TRP uses one of the TCI-states to transmit PDSCH to the terminal device.
  • any two beams or TRPs can be transmitted at the same time, or can be transmitted in time sharing. If it is transmitted at the same time, the above two TCI-states must meet the requirement of simultaneous reception, that is, these two TCI-states can be received by the terminal device at the same time. That is, the reference signal resources included in the typeD QCL-info in the two TCI-states can be received by the terminal device at the same time.
  • the reference signal resources included in the QCL-info of the typeD type in the two TCI-states must be two resources previously reported to the network device by the terminal device that can be received simultaneously.
  • the two reference signal resources included in the typeD QCL-info in the two TCI-states and the two resources previously reported to the network device by the terminal device that can be received at the same time respectively satisfy the typeD QCL relationship .
  • multiple TCI-states included in the same TCI-state group must meet the simultaneous receipt requirement, or multiple TCI-states included in the TCI-state group corresponding to the same TCI field value must meet the simultaneous receipt requirement.
  • multiple TCI-states included in the TCI-state group corresponding to the same TCI field value need to meet the requirement of co-receiving.
  • the transmission mode can be configured through RRC signaling.
  • two TRPs use two TCI-states to transmit data to the terminal device at the same time, then when the TCI-state is activated, the two TCI-states corresponding to the same TCI-state group need Meet the requirements of the same collection. If in the transmission mode configured by RRC signaling, two TRPs use two TCI-states to transmit data to the terminal device in a time-sharing manner, then when the TCI-state is activated, two TCI-states corresponding to the same TCI-state group There is no need to meet the same collection requirements.
  • the transmission mode parameter such as the transmission mode indicated by URLLSchemeEnabler is TDM, such as TDMSchemeA
  • the transmission mode parameter such as when the transmission mode indicated by URLLSchemeEnabler is FDM, such as FDMSchemeA or FDMSchemeB
  • the TCI-state in the TCI-state group indicated by the DCI is required to be simultaneously received by the terminal device.
  • each TCI-state group corresponding to each TCI field value may be limited to include at least one TCI-state group, and the corresponding multiple TCI-state groups can be simultaneously received by the terminal device. Or, it may be restricted that in each TCI-state group corresponding to each TCI field value, multiple TCI-states corresponding to all TCI-state groups can be simultaneously received by the terminal device.
  • each TCI-state group activated by the same second message includes at least one TCI-state group, and the corresponding multiple TCI-state groups can be simultaneously received by the terminal device. Or, it may be limited that in each TCI-state group activated by the same second message, multiple TCI-states corresponding to all TCI-state groups can be simultaneously received by the terminal device.
  • each TCI-state group corresponding to each TCI field value can be limited to include at least one TCI-state group, and the corresponding multiple TCI-states can be received by the terminal device at the same time, and at least one TCI-state group is included , The corresponding multiple TCI-states do not need to be received by the terminal device at the same time.
  • the terminal device In PDSCH transmission, if the network device DCI indicates two TCI-states, and the two TCI-states are used for simultaneous transmission, then the terminal device needs to receive the PDSCH simultaneously according to the two TCI-states. However, the terminal device may not be able to receive the data corresponding to the two TCI-states at the same time. For example, the terminal device turns on an antenna panel and can generate a receiving beam corresponding to the TCI-state. At this time, the terminal device can abandon this transmission. Alternatively, the terminal device may also choose to receive data corresponding to one TCI-state and discard data corresponding to the other TCI-state. To receive the data corresponding to which TCI-state, any one of the following methods can be used. Which one to use can be indicated by RRC signaling, or reported to the network device by the terminal device.
  • Method 1 Receive the first one in the TCI-state group
  • Method 2 Receive the last one in the TCI-state group
  • Method 3 Receive the one with the smallest index in the TCI-state group
  • Method 4 Receive the one with the largest index in the TCI-state group
  • Method 5 The one with the best reception quality; the quality can refer to RSRP (Reference signal receiving power), RSRQ (Reference signal receiving quality, reference signal receiving quality), SNR (Signal to Noise Ratio, signal Noise Ratio), SIR (Signal to Interference Ratio, Signal to Interference Ratio), SINR (Signal to Interference and Noise Ratio, Signal to Interference and Noise Ratio), RSSI (Received Signal Strength Indication), CQI (Channel Quality Indicator, Channel quality indicator), PMI (Precoding Matrix Indicator, precoding matrix indicator), RI (Rank Indicator, channel rank indicator), LI (Layer Indicator, layer indicator).
  • RSRP Reference signal receiving power
  • RSRQ Reference signal receiving quality
  • SNR Signal to Noise Ratio, signal Noise Ratio
  • SIR Signal to Interference Ratio
  • SINR Signal to Interference and Noise Ratio
  • RSSI Receiveived Signal Strength Indication
  • CQI Channel Quality Indicator
  • the TCI-state with the smallest RV is received.
  • a priority can be defined among the 4 RVs, and the TCI-state corresponding to the RV with the highest priority can be received. For example, RV0 has the highest priority, so when a TCI-state transmits RV0, then the TCI-state is received.
  • the terminal device can receive a beam at the same time, for example, the terminal device reports an antenna panel, or can open an antenna panel at the same time, the following restriction methods need to be adopted. Which method is used can be indicated by RRC signaling or reported to the network device by the terminal device.
  • Method 1 The CORESET corresponding to two TRPs must use the same TCI-state.
  • the TCI-states activated by the two CORESETs are required to be the same, or the typeD type in the TCI-states activated by the two CORESETs
  • the reference signal resources included in QCL-info are the same, or the two CORESETs meet the quasi-co-position relationship of typeD. This method is also applicable to PDSCH.
  • a network device uses two TCI-states (either two TCI-states indicated by the same DCI or two TCI-states indicated by two different DCIs) to transmit PDSCH in the same time slot, these two TCI-states
  • the state must be the same, or the reference signal resources included in the QCL-info of the typeD type in the two TCI-states are the same, or the two PDSCHs meet the quasi-coordinate relationship of the typeD type.
  • Method 2 The CORESET corresponding to two TRPs can use different TCI-states.
  • two CORESETs correspond to two TRPs respectively, that is, they are respectively associated with different first index values
  • the TCI-states activated by the two CORESETs that is, the TCI-states used for PDCCH transmission
  • the TypeD QCL-info in the currently activated TCI-state includes different reference signal resources, or the two CORESETs do not satisfy the QCL relationship of typeD, and it is stipulated that the time domain resources corresponding to the two CORESETs should be staggered. of.
  • a network device uses two TCI-states (two TCI-states indicated by the same DCI or two TCI-states indicated by two different DCIs) to transmit PDSCH in the same time slot, if two TCI-states The state is different, or the reference signal resources included in the typeD QCL-info in the two TCI-states are not the same, or the two PDSCHs do not meet the quasi-coordinate relationship of the typeD type, then the two PDSCHs Stagger in the time domain.
  • Method 3 CORESET corresponding to two TRPs can use different TCI-states.
  • two CORESETs correspond to two TRPs respectively, that is, they are respectively associated with different first index values
  • the terminal device receives the above One of CORESET. Which one to receive can be based on any of the following rules:
  • This method is also applicable to PDSCH.
  • a network device uses two TCI-states (either two TCI-states indicated by the same DCI or two TCI-states indicated by two different DCIs) to transmit PDSCH in the same time slot, if these two PDSCHs If the typeD quasi-co-location relationship is not satisfied, and the two PDSCHs overlap in the time domain, the terminal device receives one of the above-mentioned PDSCHs. Which one to receive can be based on any of the following rules:
  • Rule 1 Receive the PDSCH with the smaller first index value associated with the CORESET corresponding to the scheduled PDCCH;
  • Rule 2 Receive the PDSCH with the larger first index value associated with the CORESET corresponding to the scheduled PDCCH;
  • Method 4 CORESET corresponding to the same TRP must use the same TCI-state.
  • the TCI-states activated by the two CORESETs are required to be the same, or the QCL-type of typeD in the TCI-states activated by the two CORESETs
  • the reference signal resources included in info are the same, or the two CORESETs meet the quasi-parity relationship of typeD. This method is also applicable to PDSCH.
  • the two TCI-states When a network device uses two TCI-states (which can be respectively indicated by the DCI corresponding to two CORESETs associated with the same first index value) to transmit PDSCH in the same time slot, the two TCI-states must be the same, or The reference signal resources included in the QCL-info of the typeD type in the two TCI-states are the same, or the two PDSCHs satisfy the quasi-coordinate relationship of the typeD type.
  • the CORESET corresponding to the same TRP can adopt different TCI-states.
  • two CORESETs correspond to the same TRP, that is, they are associated with the same first index value
  • the two CORESET activated TCI-states that is, the TCI-state used for PDCCH transmission
  • the TypeD QCL-info in the TCI-state includes different reference signal resources, or the two CORESETs do not satisfy the QCL relationship of typeD, and it is stipulated that the time domain resources corresponding to the two CORESETs should be staggered.
  • TCI-state activated by CORESET associated with the same first index value is the same, or the reference signal resource included in the QCL-info of typeD type in the TCI-state is the same, or the associated first index value CORESET meets typeD.
  • Type of quasi-penetration This method is also applicable to PDSCH.
  • the network device uses two TCI-states (which can be indicated by the DCI corresponding to two CORESETs associated with the same first index value) to transmit PDSCH in the same time slot, if the two TCI-states are not the same, or The typeD QCL-info in the two TCI-states includes different reference signal resources, or the two PDSCHs do not satisfy the typeD quasi-co-location relationship, then the two PDSCHs should be staggered in the time domain.
  • CORESET corresponding to the same TRP can adopt different TCI-states.
  • two CORESETs correspond to the same TRP, that is, they are associated with the same first index value, if the two CORESETs do not satisfy the QCL relationship of typeD, and the time domain resources of the two CORESETs overlap, the terminal device receives the above CORESET one of. Which one to receive can be based on any of the following rules:
  • This method is also applicable to PDSCH.
  • the network device uses two TCI-states (which can be respectively indicated by the DCI corresponding to two CORESETs associated with the same first index value) to transmit PDSCH in the same time slot, if the two PDSCHs do not meet the typeD quasi-co-location Relationship, and the two PDSCHs overlap in the time domain, then the terminal device receives one of the above-mentioned PDSCHs. Which one to receive can be based on any of the following rules:
  • Rule 1 Receive the PDSCH with the smaller first index value associated with the CORESET corresponding to the scheduled PDCCH;
  • Rule 2 Receive the PDSCH with the larger first index value associated with the CORESET corresponding to the scheduled PDCCH;
  • the above method may be executed only when the terminal device can receive one of the TCI-states.
  • the terminal device has a receiving antenna panel that can receive one of the TCI-states. In this case, the above method needs to be used to select which one to receive.
  • the first TCI-state group can be determined from the P TCI-state groups as the TCI-state group for transmitting downlink data.
  • the network device may indicate the first TCI-state group to the terminal device.
  • the network device may send a second message to the terminal device, where the second message is used to indicate the first TCI-state group.
  • the second message includes a TCI field, and the first TCI-state group can be indicated through the TCI field.
  • the second message may be a message such as DCI.
  • the Q TCI-state lists may be carried by a single first message.
  • a first message (such as MAC CE) includes Q*N TCI-state indexes.
  • the first group of N TCI-states belong to the first TCI-state list, the second group of N TCI-states belong to the second TCI-state list, and so on.
  • the TCI-state from the first TCI-state list is used as the first TCI-state in the TCI-state group.
  • the second TCI-state list TCI-state is used as the second TCI-state in the TCI-state group, and so on.
  • the value of Q, the value of N and/or the total number of TCI-state indexes carried in the first message can be specified by the protocol or indicated by the network device, for example, configured through RRC signaling or through MAC CE (for example, the above-mentioned MAC CE indicating the TCI-state index, or other MAC CE) indications may also be reported through the terminal, for example, through the terminal capability reporting process.
  • the number of TCI-states contained in each TCI-state list can be separately specified or indicated separately, that is, the number of TCI-states contained in each TCI-state list can be separately specified by the protocol, or separately indicated by the network device.
  • the number of TCI-states included in each TCI-state list can be indicated by MAC CE (such as the above-mentioned MAC CE indicating the TCI-state index, or other MAC CE) through RRC signaling configuration, or the number of TCI-state included in each TCI-state list can also be reported through the terminal, for example, The terminal capability reporting process reports the number of TCI-states contained in each TCI-state list.
  • MAC CE such as the above-mentioned MAC CE indicating the TCI-state index, or other MAC CE
  • the terminal capability reporting process reports the number of TCI-states contained in each TCI-state list.
  • a first message (such as MAC CE) includes Q bitmaps, and each bitmap corresponds to a TCI-state group.
  • Each bitmap can activate at most M TCI-states, that is, the upper limit of the number of bits with a bit value of 1 in each bitmap is M.
  • the number of bits included in each bitmap is L.
  • the value of Q, M and/or L can be specified by the protocol, or indicated by the network device, for example, configured by RRC signaling or indicated by MAC CE (for example, MAC CE of the above-mentioned indication bitmap, or other MAC CE) , It can also be reported through the terminal, for example, through the terminal capability reporting process.
  • the maximum number of TCI-states M of each bitmap that can be activated, and the number of bits L included in each bitmap can also be specified or indicated separately, for example, specified by the agreement, or Instructed by the network equipment, for example, through RRC signaling configuration or through MAC CE (such as the above-mentioned MAC CE indicating the TCI-state index, or other MAC CE) respectively indicating the values of M and L corresponding to each bitmap, or through
  • the terminal report for example, reports the values of M and L corresponding to each bitmap through the terminal capability report process.
  • Q TCI-state lists may be carried by Q first messages.
  • a first message (such as MAC CE) includes N TCI-state indexes, corresponding to a TCI-state list.
  • the TCI-states carried in the Q first messages correspond to Q TCI-state lists.
  • 1 bit is used to determine whether the first message corresponds to the first TCI-state list or the second TCI-state list.
  • the TCI-state from the first TCI-state list is used as the first TCI-state in the TCI-state group.
  • the second TCI-state list TCI-state is used as the second TCI-state in the TCI-state group, and so on.
  • the number Q of the first message and the value of the TCI-state index number N included in the first message may be specified by the protocol or indicated by the network device, such as configured through RRC signaling or through MAC CE (such as the above indication).
  • the MAC CE or other MAC CE indications indexed by the TCI-state may also be reported through the terminal, for example, through the terminal capability reporting process.
  • a first message (such as MAC CE) includes a bitmap, and each bitmap corresponds to a TCI-state group.
  • Each bitmap can activate at most M TCI-states, that is, the upper limit of the number of bits with a bit value of 1 in each bitmap is M.
  • the number of bits included in each bitmap is L.
  • M and L can be specified by the protocol, or indicated by the network equipment, for example, configured by RRC signaling or indicated by MAC CE (for example, the above-mentioned MAC CE indicating the TCI-state index, or other MAC CE), or Reporting through the terminal, for example, through the terminal capability reporting process.
  • the above method may also be used for the indication of the transmission beam of uplink transmission (for example, SRS/PUCCH/PUSCH/PRACH).
  • the TCI-state in the above method can be replaced with spatial relation or SRS resource.
  • the network device may send a first message to the terminal device for activating multiple sets of uplink transmission beams or multiple sets of spatial relations or multiple sets of SRS resources, and each group includes one or more transmission beams or spatial relations or SRS resources.
  • a second message is sent to the terminal device, which is used to indicate a group of transmission beams or a group of spatial relations or a group of SRS resources used for uplink transmission.
  • the first message and the second message may be RRC signaling, or MAC CE signaling, or DCI signaling.
  • the above method can also be used to activate the TCI-state of the PDCCH.
  • the TCI-states included in the above Q TCI-state lists may be the TCI-states of the same cell.
  • the TCI-states included in the above Q TCI-state lists may also be TCI-states in Q different cells.
  • the TCI-state list of the Q different cells can be indicated by the MAC CE of the Q different cells.
  • the TCI-states included in the above Q TCI-state lists may be the same as the TCI-state of the BWP.
  • the TCI-states included in the above Q TCI-state lists may also be TCI-states in Q different BWPs.
  • the TCI-state lists of the Q different cells can be indicated by the MAC CEs of the Q different BWPs.
  • the terminal device can determine the first TCI-state group through the TCI field in the second message, and the first TCI-state group may include one or two TCI-states.
  • the terminal device receives the PDSCH or downlink data according to the TCI-state included in the determined first TCI-state group.
  • the network device adopts the at least two TCI-states included in the first TCI-state group indicated by the second message to be transmitted simultaneously or in time sharing.
  • the time-sharing transmission mode is to use multiple TCI-states to transmit one or more redundancy of the same data on different symbols in the same time slot.
  • Version RV such as the transmission mode TDMSchemeA.
  • two TCI-states are taken as an example for illustration.
  • the data transmitted by the two TCI-states can be the same or different redundancy versions (Redundant version, RV) of the same data, which can improve the reliability of data transmission.
  • the foregoing time-sharing transmission mode may be configured by the network device, that is, the network device configures this transmission mode to the terminal device through RRC signaling.
  • the network device can indicate the start symbol S and the number of symbols L of the first transmission (the transmission corresponding to the first TCI-state), and the symbol interval K between the two transmissions, that is, the second transmission The interval between the first symbol transmitted and the last symbol of the first transmission.
  • the terminal device can determine the start symbol of the second transmission according to the start symbol and the number of symbols of the first transmission, and the symbol interval of the two transmissions. It can be specified that the number of symbols used in the two transmissions is equal. In this way, the number of symbols transmitted for the second time can also be determined by the number of symbols transmitted for the first time. In this way, the terminal device can determine the time domain resource information of the two transmissions.
  • the network device needs to indicate the start symbol S of the first transmission, the number of symbols L, and the symbol interval K of the two transmissions, and the terminal device can determine the time domain resource information of the two transmissions. It should be noted that the network device may not indicate the values of S and L, but indicate a parameter (such as the startSymbolAndLength parameter or the SLIV parameter), and the terminal device can calculate the values of S and L through this parameter.
  • the values of S, L, and K need to meet certain constraints to ensure that the second transmission will not exceed the range of the time slot. Specifically, the following constraints need to be met: If the transmission adopts a normal cyclic redundancy prefix (normal cyclic prefix), that is, each time slot has 14 orthogonal frequency division multiplexing (OFDM) symbols, then S needs to be satisfied. +2L+K ⁇ 14.
  • normal cyclic prefix normal cyclic prefix
  • OFDM orthogonal frequency division multiplexing
  • an extended cyclic prefix Extended cyclic prefix
  • Table 10 below shows an example.
  • the foregoing method for determining time domain resources can be used for both downlink transmission and uplink transmission.
  • the above constraints can be used for both downlink transmission and uplink transmission, and will not be repeated here.
  • the network device When the network device indicates two TCI-states through DCI and the terminal device is configured to use frequency division multiplexing transmission mode (that is, two TCI-states are used to transmit the same data, and the frequency domain resources corresponding to the two TCI-states are different ), the network device also needs to transmit a PTRS (Phase Tracking Reference Signal) to the terminal device for time-frequency tracking.
  • a PTRS Phase Tracking Reference Signal
  • the frequency domain density K PT-RS of the PTRS may be determined according to the granularity of the PRG (Precoding Resource Block Group, precoding resource block group) adopted for PDSCH transmission.
  • the frequency domain density of the PTRS is 2 RBs
  • the frequency domain density of the PTRS is 4 RBs.
  • An activated group of TCI-states can be used for simultaneous transmission or time-sharing transmission (for example, the same RV or different RVs that transmit the same data in multiple consecutive time slots).
  • time-sharing continuous transmission it is necessary to indicate the number of continuous transmissions.
  • One method is to indicate the number of transmissions through the pdsch-AggregationFactor parameter in RRC signaling.
  • Another method is to indicate through the PDSCH-TimeDomainResourceAllocation parameter in RRC signaling.
  • the TimeDomainResourceAllocation parameter may include a parameter, such as the URLLCRepNum parameter, which is used to indicate the number of consecutive transmissions.
  • the network device can configure multiple TimeDomainResourceAllocation parameters for the terminal device, and then indicate one of them through the DCI.
  • the number of transmissions configured in the indicated TimeDomainResourceAllocation parameter is the number of consecutive transmissions. How to determine the number of consecutive transmissions through the above two parameters is a problem. You can use any of the following methods.
  • the value of pdsch-AggregationFactor is used, that is, the priority of pdsch-AggregationFactor is higher; at this time, if the DCI indicates two TCI-states, then these two TCI-states are used for continuous transmission ( For example, two TCI-states are alternately used for continuous transmission), and the number of transmissions is equal to the pdsch-AggregationFactor parameter value. If the DCI indicates a TCI-state, then use this TCI-state for continuous transmission, and the number of transmissions is equal to the pdsch-AggregationFactor parameter value.
  • the number of transmissions is indicated in the TimeDomainResourceAllocation indicated by the DCI, the number of transmissions is used, that is, the priority of pdsch-AggregationFactor is higher; at this time, if the DCI indicates two TCI-states, then these two TCI-states are used for continuous Transmission (for example, alternately using two TCI-states for continuous transmission), the number of transmissions is equal to the number of transmissions indicated in TimeDomainResourceAllocation, if DCI indicates a TCI-state, then this TCI-state is used for continuous transmission, and the number of transmissions is equal to the number of transmissions in TimeDomainResourceAllocation The number of transfers indicated.
  • the number of transmissions is also configured in the TimeDomainResourceAllocation indicated by the DCI, which can be judged according to the number of TCI indicated by the DCI:
  • the number of transmissions in TimeDomainResourceAllocation is used. Using these two TCI-states for continuous transmission (for example, alternately using two TCI-states for continuous transmission), the number of transmissions is equal to the number of transmissions indicated in TimeDomainResourceAllocation,
  • DCI indicates a TCI-state
  • the number of transmissions in pdsch-AggregationFactor is used. Use this TCI-state for continuous transmission, and the number of transmissions is equal to the value of the pdsch-AggregationFactor parameter.
  • the number of transmissions is determined by the value of the pdsch-AggregationFactor parameter. If the DCI indicates a TCI-state, use this TCI-state for continuous transmission, and the number of transmissions is equal to the value of the pdsch-AggregationFactor parameter.
  • the above method can also be used for uplink.
  • pdsch-AggregationFactor is replaced with pusch-AggregationFactor
  • TimeDomainResourceAllocation is replaced with related parameters for uplink transmission (the parameter name can be other names), and the above method can be used for uplink.
  • the method described in FIG. 2 is for a scenario in which PDSCH transmission of multiple beams or multiple TRPs is scheduled through a second message. That is, the TCI-states used for PDSCH transmission of multiple beams or multiple TRPs are all determined by the TCI field value in the second message, and the terminal device determines a TCI-state group through a TCI field value.
  • the PDSCHs transmitted by multiple beams or multiple TRPs are transmitted independently, and are scheduled through a second message respectively. For example, when the second message is DCI, the network device sends DCI0 to schedule PDSCH0 of TRP0, and sends DCI1 to schedule PDSCH1 of TRP1.
  • the terminal device determines the TCI-state of PDSCH0 through DCI0, and determines the TCI-state of PDSCH1 through DCI1. At this time, the terminal device needs to determine the TCI-state corresponding to each of the TCI fields in DCI0 and DCI1. That is, one field value of the TCI field in DCI0 corresponds to one TCI-state, and one field value of the TCI field in DCI1 corresponds to another TCI-state. Therefore, the TCI-states corresponding to the TCI fields of the two DCIs need to be activated respectively.
  • the network device can activate a group of TCI-states through a first message, and the group of TCI-states is mapped to each TCI field value of the DCI corresponding to a TRP.
  • multiple groups of TCI-states can be activated, and each group of TCI-states is mapped to each TCI field value of the DCI corresponding to a TRP.
  • the network device can activate K TCI-states through MAC CE 1, and the K TCI-states activated by MAC CE 1 are used for the PDSCH transmission of TRP0. Therefore, these K TCI-states are the same as the K TCI fields in the DCI of TRP0.
  • the values correspond one to one.
  • the terminal device When the terminal device receives the DCI of TRP0, it can determine the corresponding TCI-state according to the value of the TCI field in the DCI.
  • the network device can activate K TCI-states through MAC CE 2, and the K TCI-states activated by MAC CE 2 are used for PDSCH transmission of TRP1. Therefore, these K TCI-states are the same as the K of the TCI field in the DCI of TRP1. Each value corresponds to one by one.
  • the terminal device receives the DCI of TRP1, it can determine the corresponding TCI-state according to the value of the TCI field in the DCI.
  • a terminal device when a terminal device receives a MAC CE, it needs to determine which TRP the MAC CE corresponds to, that is, the K TCI-states activated by the MAC CE correspond to the TCI field in the DCI of which TRP. In one implementation, it can be judged according to the DCI that schedules the MAC CE, that is, which TRP DCI schedules the transmission of the MAC CE, then the TCI-state activated by the MAC CE is the same as the TCI in the DCI of which TRP. Corresponding to the field value.
  • the K TCI-states activated by the MAC CE are used for PDSCH transmission of TRP0 and correspond to the TCI field in the DCI of TRP0. If the MAC CE is scheduled through the DCI of TRP1, the K TCI-states activated by the MAC CE are used for PDSCH transmission of TRP1, and correspond to the TCI field in the DCI of TRP1.
  • Each DCI corresponds to a control resource set (CORESET), and the CORESET includes related parameters of the DCI.
  • Each CORESET can be associated with a first index value, for example, CORESETPoolIndex.
  • the index value can be 0 or 1, and can be used to group CORESETs.
  • CORESETs associated with the same first index value belong to the same group and correspond to the same TRP, and CORESETs associated with different first index values belong to different groups and correspond to different TRPs.
  • the DCI corresponding to the CORESET with the first index value of 0 is the DCI of TRP0
  • the DCI corresponding to the CORESET with the first index value of 1 is the DCI of TRP1. Therefore, the judgment can be made by the first index value associated with the CORESET corresponding to the DCI.
  • the terminal device receives a MAC CE used to activate the TCI-state for PDSCH transmission, if the first index value associated with the CORESET corresponding to the DCI of the scheduled MAC CE is i (i can be equal to 0 or 1), Then the TCI-state activated by the MAC CE corresponds to the value of the TCI field in the DCI corresponding to the CORESET with the associated first index value i. That is, if the network device schedules a MAC CE through an associated DCI corresponding to the CORESET with the first index value of i, then the K TCI-states activated by the MAC CE correspond to the associated CORESET with the first index value of i The TCI field in DCI is corresponding.
  • the terminal device can, according to the value of the TCI field in the DCI, and the above-mentioned K activated TCI-states (that is, through the associated first
  • the corresponding relationship between the DCI-scheduled MAC (K TCI-states activated by the CE) corresponding to the CORESET with an index value of i) determines the TCI-state indicated by the DCI, and receives the PDSCH according to the DCI indication.
  • the TCI fields in the DCI corresponding to these CORESETs all correspond to the above-mentioned activated TCI-state. That is, no matter which DCI corresponding to the aforementioned CORESET is received by the terminal device, it must determine a TCI-state from the aforementioned activated TCI-state according to the TCI field in the DCI. In the above method, the total number of TCI-states activated for multiple TRPs cannot exceed the threshold S.
  • limit X of the number of TCI-states included in each TCI-state list
  • the values of S, X, Y, X, W, and V can be specified in the protocol, configured by the network device to the terminal device, or reported to the network device by the terminal device, for example, reported to the network device through the capability reporting process.
  • the network device can send multiple activation signaling to the terminal device, and each activation signaling is used to activate a beam or TRP K TCI-states transmitted by the PDSCH.
  • the network device sends activation signaling to activate 8 TCI-states.
  • the above method can also be used to activate multiple TCI-states for each TRP. For example, when there are two TRPs, two activation signalings are used to activate K TCI-states for each TRP respectively, and these K TCI-states are associated with the K values of the TCI field in the DCI of the TRP.
  • activation signaling in the embodiment of the present application may be MAC CE signaling or other signaling.
  • the foregoing first index value (for example, CORESETPoolIndex) is used to group CORESETs, and each group of CORESET corresponds to one TRP, so it can be considered that the foregoing first index value is used to represent TRP. Therefore, the TRP in this application may correspond to a set of CORESETs, that is, all CORESETs corresponding to one first index value.
  • Step 401 The network device sends the MAC CE to the terminal device.
  • Step 402 The terminal device receives the MAC CE from the network device.
  • the MAC CE is used to activate K TCI-states, and K is an integer greater than 1; the MAC CE is scheduled through DCI 1.
  • the first index value (such as CORESETPoolIndex 0) associated with CORESET corresponding to DCI 1 is i.
  • the K TCI-states are mapped to K TCI field values.
  • Step 403 The network device sends the DCI 2 to the terminal device, and sends the PDSCH scheduled by the DCI 2.
  • the PDSCH is scheduled through DCI2.
  • the first index value associated with the CORESET corresponding to the DCI 2 is i.
  • the TCI-state indicated by the TCI field in the DCI 2 is any TCI-state among the K TCI-states activated by the MAC CE.
  • Step 404 The terminal device receives the DCI2, and receives the PDSCH scheduled by the DCI2 according to the DCI2.
  • the terminal device may determine the TCI-state indicated by the TCI field in the DCI 2 and receive the PDSCH scheduled by the DCI 2 according to the TCI-state.
  • the terminal device determines the index value of the control resource set associated with DCI1, and determines the index value of the control resource set associated with DCI2 that needs to be received, which is the same as the index of the control resource set associated with DCI1.
  • the network device can send an activation instruction to activate K TCI-states corresponding to multiple TRPs. That is, the network device sends an activation signaling to the terminal device, and the activation signaling is used to activate K TCI-states.
  • the K TCI-states correspond to at least two beams or TRPs. For example, among the K TCI-states, there are both TCI-states used for TRP0 transmission and TCI-states used for TRP1 transmission.
  • a beam or TRP corresponding to each TCI-state in the K TCI-states can be agreed.
  • the K TCI-states correspond to Q beams or Q TRPs, and Q is less than or equal to K
  • the K TCI-states can be divided into Q parts, and each part includes at least one TCI-state. Part corresponds to a beam or TRP.
  • Q is equal to 2 and K is equal to 8
  • the K TCI-states can be divided into two parts.
  • the first part for example, includes the first four TCI-states of the K TCI-states, corresponding to TRP0, which is associated with The CORESET with an index value of 0 corresponds to the value of the TCI field in the DCI; the first part, for example, includes the last four TCI-states of the K TCI-states, corresponding to TRP1, which is the CORESET with the associated index value of 1. Corresponding to the value of the TCI field in the corresponding DCI.
  • the beam or TRP corresponding to each TCI-state may be determined according to the activation order of the K activated TCI-states or the order of the index value. For example, if Q is equal to 2, you can place K/2 TCI-states in front of K TCI-states in the order of activation, corresponding to TRP0; among K TCI-states, arrange them at the end in the order of activation The K/2 TCI-states on the surface correspond to TRP1.
  • the K/2 TCI-states with the smallest index value among the K TCI-states can be corresponding to TRP0; among the K TCI-states, the K/2 TCI-states with the largest index value -state, corresponding to TRP1. Other situations will not be repeated.
  • 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
  • the methods and operations implemented by the network device can also be implemented by It can be implemented by components (such as chips or circuits) of network devices.
  • the terminal device and the network device may include a hardware structure and/or software module, and the above functions are implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether a certain function of the above-mentioned functions is executed by a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraint conditions of the technical solution.
  • each functional module in each embodiment of the present application may be integrated in a processor, or may exist alone physically, or two or more modules may be integrated in one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software function modules.
  • an embodiment of the present application further provides an apparatus 500 for implementing the functions of the terminal equipment or the network equipment in the above-mentioned method.
  • the device may be a software module or a chip system.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the apparatus 500 may include: a processing unit 501 and a communication unit 502.
  • the communication unit may also be referred to as a transceiving unit, and may include a sending unit and/or a receiving unit, which are respectively configured to perform the sending and receiving steps of the terminal device or the network device in the above method embodiment.
  • the apparatus 500 can implement steps or processes corresponding to the terminal equipment or network equipment in the above method embodiments, which will be described separately below.
  • the communication unit 502 is configured to send a first message indicating P transmission configuration number state TCI-state groups, and each TCI-state group in the P TCI-state groups includes at least one TCI-state , P is an integer greater than 1;
  • the processing unit 501 is configured to determine a first TCI-state group from the P TCI-state groups;
  • the communication unit 502 is configured to send a second message to a terminal device, and the TCI field in the second message is used to indicate the first TCI-state group;
  • the P TCI-state groups correspond to P TCI field values of the TCI field in the second message in a one-to-one correspondence; the first TCI-state group is used to transmit downlink data to the terminal device.
  • the first message indicating P TCI-state groups includes:
  • the first message indicates Q TCI-state lists, and each TCI-state list in the Q TCI-state lists includes at most P TCI-states, where Q is an integer greater than 1;
  • Each TCI-state in the Q TCI-state lists is paired one by one in a preset order to form the P TCI-state groups.
  • the preset order is the order of the TCI-states in the TCI-state list, or the preset order is the order of sorting according to the size of the TCI-state index;
  • the preset order is the arrangement order of the TCI-states in the TCI-state list
  • TCI states with the same arrangement order are paired into one TCI-state group
  • the preset order is that the index of the TCI-state in the TCI-state list is from small to large or from large to small
  • the order of the index size is the same
  • the TCI state is paired into a TCI-state group.
  • the first TCI-state group includes multiple identical TCI-states, it means that the TCI-state is used for downlink data transmission;
  • the first TCI-state group includes one TCI-state and one or more preset indexes, it means that the TCI-state is used for downlink data transmission.
  • the communication unit 502 is configured to receive a first message from a network device, the first message indicating P transmission configuration number state TCI-state groups, and each TCI-state group in the P TCI-state groups includes at least A TCI-state, where P is an integer greater than 1; receiving a second message from a network device; the TCI field in the second message is used to indicate the first TCI-state group;
  • the processing unit 501 is configured to determine the first TCI-state group according to the TCI field in the second message;
  • the P TCI-state groups correspond to P TCI field values of the TCI field in the second message in a one-to-one correspondence; the first TCI-state group is used to transmit downlink data to the terminal device.
  • the first message indicating P TCI-state groups includes:
  • the first message indicates Q TCI-state lists, and each TCI-state list in the Q TCI-state lists includes at most P TCI-states, where Q is an integer greater than 1;
  • Each TCI-state in the Q TCI-state lists is paired one by one in a preset order to form the P TCI-state groups.
  • the preset order is the order of the TCI-states in the TCI-state list, or the preset order is the order of sorting according to the size of the TCI-state index;
  • the preset order is the arrangement order of the TCI-states in the TCI-state list
  • TCI states with the same arrangement order are paired into one TCI-state group
  • the preset order is that the index of the TCI-state in the TCI-state list is from small to large or from large to small
  • the order of the index size is the same
  • the TCI state is paired into a TCI-state group.
  • the first TCI-state group includes multiple identical TCI-states, it means that the TCI-state is used for downlink data transmission;
  • the first TCI-state group includes one TCI-state and one or more preset indexes, it means that the TCI-state is used for downlink data transmission.
  • FIG. 6 shows a device 600 provided by an embodiment of the application.
  • the device shown in FIG. 6 may be a hardware circuit implementation of the device shown in FIG. 6.
  • the communication device can be applied to the flowchart shown in Fig. 2 to perform the functions of the terminal device or the network device in the foregoing method embodiment.
  • FIG. 6 only shows the main components of the communication device.
  • the apparatus 600 shown in FIG. 6 includes at least one processor 620, configured to implement any method in FIG. 2 provided in the embodiment of the present application.
  • the device 600 may further include at least one memory 630 for storing program instructions and/or data.
  • the memory 630 and the processor 620 are coupled.
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 620 may cooperate with the memory 630 to operate.
  • the processor 620 may execute program instructions stored in the memory 630. At least one of the at least one memory may be included in the processor.
  • each step of the above method can be completed by an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the steps of the method disclosed in the embodiments of the present application may be embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processing circuit (digital signal processor, DSP), a dedicated integrated circuit (application specific integrated circuit, ASIC), a field programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processing circuit
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • Programming logic devices discrete gates or transistor logic devices, discrete hardware components.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present application may be embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic RAM
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM
  • the apparatus 600 may further include a communication interface 610 for communicating with other devices through a transmission medium, so that the apparatus used in the apparatus 600 can communicate with other devices.
  • the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface.
  • 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 with integrated transceiver functions, or an interface circuit.
  • the device 600 may also include a communication line 640.
  • the communication interface 610, the processor 620, and the memory 630 may be connected to each other through a communication line 640;
  • the communication line 640 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (extended industry standard architecture). , Referred to as EISA) bus and so on.
  • the communication line 640 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 6, but it does not mean that there is only one bus or one type of bus.
  • the communication interface 610 is configured to send a first message indicating P transmission configuration number state TCI-state groups, and each TCI-state group in the P TCI-state groups includes at least one TCI-state , P is an integer greater than 1;
  • the processor 620 is configured to determine a first TCI-state group from the P TCI-state groups
  • the communication interface 610 is configured to send a second message to a terminal device, and the TCI field in the second message is used to indicate the first TCI-state group;
  • the P TCI-state groups correspond to P TCI field values of the TCI field in the second message in a one-to-one correspondence; the first TCI-state group is used to transmit downlink data to the terminal device.
  • the first message indicating P TCI-state groups includes:
  • the first message indicates Q TCI-state lists, and each TCI-state list in the Q TCI-state lists includes at most P TCI-states, where Q is an integer greater than 1;
  • Each TCI-state in the Q TCI-state lists is paired one by one in a preset order to form the P TCI-state groups.
  • the preset order is the order of the TCI-states in the TCI-state list, or the preset order is the order of sorting according to the size of the TCI-state index;
  • the preset order is the arrangement order of the TCI-states in the TCI-state list
  • TCI states with the same arrangement order are paired into one TCI-state group
  • the preset order is that the index of the TCI-state in the TCI-state list is from small to large or from large to small
  • the order of the index size is the same
  • the TCI state is paired into a TCI-state group.
  • the first TCI-state group includes multiple identical TCI-states, it means that the TCI-state is used for downlink data transmission;
  • the first TCI-state group includes one TCI-state and one or more preset indexes, it means that the TCI-state is used for downlink data transmission.
  • the communication interface 610 is configured to receive a first message from a network device, the first message indicating P transmission configuration number state TCI-state groups, and each TCI-state group in the P TCI-state groups includes at least A TCI-state, where P is an integer greater than 1; receiving a second message from a network device; the TCI field in the second message is used to indicate the first TCI-state group;
  • the processor 620 is configured to determine the first TCI-state group according to the TCI field in the second message;
  • the P TCI-state groups correspond to the P TCI field values of the TCI field in the second message one to one; the first TCI-state group is used to transmit downlink data to the terminal device.
  • the first message indicating P TCI-state groups includes:
  • the first message indicates Q TCI-state lists, and each TCI-state list in the Q TCI-state lists includes at most P TCI-states, where Q is an integer greater than 1;
  • Each TCI-state in the Q TCI-state lists is paired one by one in a preset order to form the P TCI-state groups.
  • the preset order is the order of the TCI-states in the TCI-state list, or the preset order is the order of sorting according to the size of the TCI-state index;
  • the preset order is the arrangement order of the TCI-states in the TCI-state list
  • TCI states with the same arrangement order are paired into one TCI-state group
  • the preset order is that the index of the TCI-state in the TCI-state list is from small to large or from large to small
  • the order of the index size is the same
  • the TCI state is paired into a TCI-state group.
  • the first TCI-state group includes multiple identical TCI-states, it means that the TCI-state is used for downlink data transmission;
  • the first TCI-state group includes one TCI-state and one or more preset indexes, it means that the TCI-state is used for downlink data transmission.
  • this application can be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.
  • a computer-usable storage media including but not limited to disk storage, optical storage, etc.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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Abstract

一种传输配置编号状态指示方法及装置，其中方法包括：发送第一消息，所述第一消息指示P个传输配置编号状态TCI-state组，所述P个TCI-state组中的每个TCI-state组包括至少一个TCI-state，P为大于1的整数；从所述P个TCI-state组中确定第一TCI-state组，并向终端设备发送第二消息，所述第二消息中的TCI字段用于指示所述第一TCI-state组；其中，所述P个TCI-state组与所述第二消息中的TCI字段的P个TCI字段值一一对应；所述第一TCI-state组用于向所述终端设备传输下行数据。

Description

一种传输配置编号状态指示方法及装置 技术领域
本申请涉及无线通信技术领域，特别涉及一种传输配置编号状态指示方法及装置。
背景技术
第五代移动通信系统(5th generation，5G)采用高频通信，即采用超高频段(例如大于6GHz的频段)信号传输数据。高频通信的一个主要问题是信号能量随传输距离急剧下降，导致信号传输距离短。为了克服这个问题，高频通信采用模拟波束技术，通过大规模天线阵列进行加权处理，将信号能量集中在一个较小的范围内，形成一个波束，从而提高传输距离。
网络设备可以生成不同的波束，指向不同的传输方向。在下行数据传输中，网络设备可以采用多个波束或多个发送接收节点(transmitter receiver point，TRP)向终端设备传输数据。然而，当网络设备采用多个波束或多个TRP传输数据给终端设备时，需要告知终端设备其采用了哪些波束或TRP传输数据，这样终端设备才能采用与发送波束相对应的接收波束来接收网络设备发送的数据。
综上，网络设备如何向终端设备指示多个发送波束的接收波束信息，或者多个TRP的信息，是一个亟待解决的问题。
发明内容
本申请实施方式的目的在于提供一种传输配置编号状态指示方法及装置，用以解决如何指示多个传输配置编号状态的问题。
第一方面，本申请提供一种方法，包括：发送第一消息，所述第一消息指示P个传输配置编号状态TCI-state组，所述P个TCI-state组中的每个TCI-state组包括至少一个TCI-state，P为大于1的整数；从所述P个TCI-state组中确定第一TCI-state组，并向终端设备发送第二消息，所述第二消息中的TCI字段用于指示所述第一TCI-state组；其中，所述P个TCI-state组与所述第二消息中的TCI字段的P个TCI字段值一一对应；所述第一TCI-state组用于向所述终端设备传输下行数据。
通过上面的过程可知，网络设备配置多个TCI-state之后，可以向终端设备指示或激活P个TCI-state组。每个TCI-state组可以包括多个TCI-state，从而使能基于多TRP或多TCI-state的传输。
在一种可能的实施方式中，所述第一消息指示P个TCI-state组，包括：
所述第一消息指示Q个TCI-state列表，所述Q个TCI-state列表中每个TCI-state列表最多包括P个TCI-state，其中Q为大于1的整数；所述Q个TCI-state列表内的各个TCI-state按预设顺序一一配对，组成所述P个TCI-state组。
在一种可能的实施方式中，所述预设顺序为TCI-state列表中TCI-state的排列顺序，或者所述预设顺序为按TCI-state的索引的大小进行排序的顺序；当所述预设顺序为TCI-state列表中TCI-state的排列顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，排列顺序相同的TCI状态配对为一个TCI-state组；当所述预设顺序为TCI-state列表 中TCI-state的索引从小到大或从大到小顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，索引大小排序相同的TCI状态配对为一个TCI-state组。
在一种可能的实施方式中，如果所述第一TCI-state组包括的多个相同的TCI-state，表示采用所述TCI-state进行下行数据传输；或者，如果所述第一TCI-state组包括一个TCI-state和一个或多个预设索引，表示采用所述TCI-state进行下行数据传输。
第二方面，本申请还提供一种通信装置，该通信装置具有实现上述第一方面提供的任一方法。该通信装置可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的单元或单元。
在一种可能的实现方式中，该通信装置包括：处理器，该处理器被配置为支持该通信装置执行以上所示方法中网络设备的相应功能。该通信装置还可以包括存储器，该存储可以与处理器耦合，其保存该通信装置必要的程序指令和数据。可选地，该通信装置还包括通信接口，该通信接口用于支持该通信装置与网络设备等设备之间的通信。
在一种可能的实现方式中，该通信装置包括相应的功能单元，分别用于实现以上方法中的步骤。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的单元。
在一种可能的实施方式中，通信装置的结构中包括处理单元和通信单元，这些单元可以执行上述方法示例中相应功能，具体参见第一方面提供的方法中的描述，此处不做赘述。
第三方面，本申请提供一种方法，包括：接收来自网络设备的第一消息，所述第一消息指示P个传输配置编号状态TCI-state组，所述P个TCI-state组中的每个TCI-state组包括至少一个TCI-state，P为大于1的整数；接收来自网络设备的第二消息，根据所述第二消息中的TCI字段确定第一TCI-state组；所述第二消息中的TCI字段用于指示所述第一TCI-state组；其中，所述P个TCI-state组与所述第二消息中的TCI字段的P个TCI字段值一一对应；所述第一TCI-state组用于向所述终端设备传输下行数据。
在一种可能的实施方式中，所述第一消息指示P个TCI-state组，包括：
所述第一消息指示Q个TCI-state列表，所述Q个TCI-state列表中每个TCI-state列表最多包括P个TCI-state，其中Q为大于1的整数；
所述Q个TCI-state列表内的各个TCI-state按预设顺序一一配对，组成所述P个TCI-state组。
在一种可能的实施方式中，所述预设顺序为TCI-state列表中TCI-state的排列顺序，或者所述预设顺序为按TCI-state的索引的大小进行排序的顺序；
当所述预设顺序为TCI-state列表中TCI-state的排列顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，排列顺序相同的TCI状态配对为一个TCI-state组；
当所述预设顺序为TCI-state列表中TCI-state的索引从小到大或从大到小顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，索引大小排序相同的TCI状态配对为一个TCI-state组。
在一种可能的实施方式中，如果所述第一TCI-state组包括的多个相同的TCI-state，表示采用所述TCI-state进行下行数据传输；或者，如果所述第一TCI-state组包括一个TCI-state和一个或多个预设索引，表示采用所述TCI-state进行下行数据传输。
第四方面，本申请还提供一种通信装置，该通信装置具有实现上述第三方面提供的任一方法。该通信装置可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的单元或单元。
在一种可能的实现方式中，该通信装置包括：处理器，该处理器被配置为支持该通信装置执行以上所示方法中终端设备的相应功能。该通信装置还可以包括存储器，该存储可以与处理器耦合，其保存该通信装置必要的程序指令和数据。可选地，该通信装置还包括通信接口，该通信接口用于支持该通信装置与网络设备等设备之间的通信。
在一种可能的实现方式中，该通信装置包括相应的功能单元，分别用于实现以上方法中的步骤。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的单元。
在一种可能的实施方式中，通信装置的结构中包括处理单元和通信单元，这些单元可以执行上述方法示例中相应功能，具体参见第三方面提供的方法中的描述，此处不做赘述。
第五方面，本申请提供一种通信装置，所述通信装置包括处理器，当所述处理器执行存储器中的计算机程序或指令时，如第一方面所述的方法被执行。
第六方面，本申请提供一种通信装置，所述通信装置包括处理器，当所述处理器执行存储器中的计算机程序或指令时，如第三方面所述的方法被执行。
第七方面，本申请提供一种通信装置，所述通信装置包括处理器和存储器，所述存储器用于存储计算机程序或指令；所述处理器用于执行所述存储器所存储的计算机程序或指令，以使所述通信装置执行如第一方面中所示的相应的方法。
第八方面，本申请提供一种通信装置，所述通信装置包括处理器和存储器，所述存储器用于存储计算机程序或指令；所述处理器用于执行所述存储器所存储的计算机程序或指令，以使所述通信装置执行如第三方面中所示的相应的方法。
第九方面，本申请提供一种通信装置，所述通信装置包括处理器、存储器和收发器，所述收发器，用于接收信号或者发送信号；所述存储器，用于存储计算机程序或指令；所述处理器，用于从所述存储器调用所述计算机程序或指令执行如第一方面所述的方法。
第十方面，本申请提供一种通信装置，所述通信装置包括处理器、存储器和收发器，所述收发器，用于接收信号或者发送信号；所述存储器，用于存储计算机程序或指令；所述处理器，用于从所述存储器调用所述计算机程序或指令执行如第三方面所述的方法。
第十一方面，本申请提供一种通信装置，所述通信装置包括处理器和接口电路，所述接口电路，用于接收代码指令并传输至所述处理器；所述处理器运行所述代码指令以执行如第一方面所示的相应的方法。
第十二方面，本申请提供一种通信装置，所述通信装置包括处理器和接口电路，所述接口电路，用于接收代码指令并传输至所述处理器；所述处理器运行所述代码指令以执行如第三方面所示的相应的方法。
第十三方面，本申请提供一种计算机可读存储介质，所述计算机可读存储介质用于存储计算机程序或指令，当计算机读取并执行所述计算机程序或指令时，使得第一方面所述的方法被实现。
第十四方面，本申请提供一种计算机可读存储介质，所述计算机可读存储介质用于存 储计算机程序或指令，当计算机读取并执行所述计算机程序或指令时，使得第三方面所述的方法被实现。
第十五方面，本申请提供一种包括指令的计算机程序产品，当计算机读取并执行所述计算机程序产品时，使得第一方面所述的方法被实现。
第十六方面，本申请提供一种包括指令的计算机程序产品，当计算机读取并执行所述计算机程序产品时，使得第三方面所述的方法被实现。
第十七方面，本申请提供一种芯片，包括处理器，所述处理器与存储器耦合，用于执行所述存储器中存储的计算机程序或指令，当所述处理器执行所述计算机程序或指令时，使得第一方面所述的方法被实现。
第十八方面，本申请提供一种芯片，包括处理器，所述处理器与存储器耦合，用于执行所述存储器中存储的计算机程序或指令，当所述处理器执行所述计算机程序或指令时，使得第三方面所述的方法被实现。
第十九方面，本申请提供一种系统，包括上述第二方面提供的终端设备以及上述第四方面提供的网络设备。
附图说明
图1为适用于本申请实施例的一种通信系统的架构示意图；
图2为本申请实施例提供的一种传输配置编号状态指示方法流程示意图；
图3为本申请实施例提供的一种资源符号示意图；
图4为本申请实施例提供的一种传输配置编号状态指示方法流程示意图；
图5为本申请实施例提供的一种通信装置结构示意图；
图6为本申请实施例提供的一种通信装置结构示意图。
具体实施方式
下面将结合附图对本申请实施例作进一步地详细描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信系统、第五代(5th Generation，5G)系统或新无线(New Radio，NR)等，在此不做限制。
为便于理解本申请实施例，首先以图1中示出的通信系统为例详细说明适用于本申请实施例的通信系统。图1示出了适用于本申请实施例提供的方法的一种可能的通信系统的架构，所述通信系统的架构中包括网络设备和至少一个终端设备，其中：所述网络设备可以通过不同方向的波束建立与至少一个终端设备(例如图中示出的终端设备1和终端设备2)之间的通信链路。所述网络设备可以为所述至少一个终端设备提供无线接入有关的服 务，实现下述功能中的一个或多个功能：无线物理层功能、资源调度和无线资源管理、服务质量(quality of service，Qos)管理、无线接入控制以及移动性管理功能。所述至少一个终端设备也可以形成波束进行与所述网络设备之间的数据传输。在本实施例中，所述网络设备与至少一个终端设备之间可以通过波束进行通信。
需要说明的是，图1所示的通信系统的架构不限于仅包含图中所示的设备，还可以包含其它未在图中表示的设备，具体本申请在此处不再一一列举。
下面先给出本申请实施例可能出现的技术术语的定义。
参考信号的资源，本申请实施例中，网络设备发送参考信号的资源可以称为参考信号资源，参考信号可以为以下信号中的任一种信号：同步信号、广播信道、同步信号广播信道块(Synchronization Signal and PBCH Block，SSB)，广播信号解调信号、信道状态信息下行信号(channel state information reference signal，CSI-RS)、小区专用参考信号(cell specific reference signal，CS-RS)、终端专用参考信号(user equipment specific reference signal，US-RS)、下行控制信道解调参考信号、下行数据信道解调参考信号、下行相位噪声跟踪信号，探测参考信号(Sounding Reference Signal，SRS)等。
波束(beam)：波束是一种通信资源。波束可以是宽波束，或者窄波束，或者其他类型波束。形成波束的技术可以是波束成形技术或者其他技术手段。波束成形技术可以具体为数字波束成形技术，模拟波束成形技术，混合数字/模拟波束成形技术。不同的波束可以认为是不同的资源。通过不同的波束可以发送相同的信息或者不同的信息。可选的，可以将具有相同或者类似的通信特征的多个波束视为是一个波束。一个波束内可以包括一个或多个天线端口，用于传输数据信道，控制信道和探测信号等，例如，发射波束可以是指信号经天线发射出去后在空间不同方向上形成的信号强度的分布，接收波束可以是指从天线上接收到的无线信号在空间不同方向上的信号强度分布。可以理解的是，形成一个波束的一个或多个天线端口也可以看作是一个天线端口集。波束在协议中的体现还是可以空域滤波器(spatial filter)。
波束在NR协议中的体现可以是空域滤波器(spatial domain filter)，或者称空间滤波器(spatial filter)，或称空间参数(spatial parameter)(如空间接收参数，和空间发送参数)。用于发送信号的波束可以称为发送波束(transmission beam，Tx beam)，也可以称为空域发送滤波器(spatial domain transmission filter)，空间发送滤波器(spatial transmission filter)，空域发送参数(spatial domain parameter)或空间发送参数(spatial transmission parameter)。用于接收信号的波束可以称为接收波束(reception beam，Rx beam)，也可以称为空域接收滤波器(spatial domain reception filter)，空间接收滤波器(spatial reception filter)，空域接收参数(spatial domain reception parameter)或空间接收参数(spatial reception parameter)。
准同位(quasi co-located，QCL)：若在一个天线端口上传输的某一符号的信道的大尺度特性，可以从另一个天线端口上传输的某一符号的信道推导得到，则这两个天线端口被称为是准同位的，可以描述该两个天线端口具有准同位属性，也可以描述该两个天线端口具有准同位关系。
QCL关系用于表示多个资源之间具有一个或多个相同或者相类似的通信特征。对于具有QCL关系的多个资源，可以采用相同或者类似的通信配置。例如，两个信号从两个不同天线端口发射，所经历的大尺度特性相同，则可以认为两个天线端口具有QCL关系，那么一个端口传送一个符号的信道大尺度特性/信道估计结果可以从另一个端口传送一个 符号的信道大尺度特性推断出来，有利于接收机处理。大尺度特性包括一个或多个时延扩展(delay spread)，多普勒扩展(Doppler spread)，多普勒频移Doppler shift，平均增益，平均时延(average delay)，空间接收参数(patial Rx parameter)。QCL的类型(Type)可以分为QCL-TypeA、QCL-TypeB、QCL-TypeC和QCL-TypeD4种。
其中，QCL-TypeA的参数为:{Doppler shift,Doppler spread,average delay,delay spread}；QCL-TypeB的参数为:{Doppler shift,Doppler spread}；QCL-TypeC的参数为:{Doppler shift,average delay}；QCL-TypeD的参数为:{Spatial Rx parameter}。
QCL-type D关系的英文可以描述为“for the purpose of determining the CORESET,a Synchronization/PBCH block is considered to have different QCL-TypeD properties than a CSI-RS”，对应翻译为“为了确定监听PDCCH的CORESET，可以理解一个同步/物理广播信道块(SS/PBCH)与一个信道状态信息测量参考信号(Channel State Information Reference Signal，CSI-RS)具有不同的类型D的准同位属性”。可以理解为一个同步/物理广播信道块对应一个宽波束，而一个信道状态信息参考信号对应一个窄波束，虽然窄波束可能是从宽波束通过波束细化(beam refinement)得到，但仍然认为宽波束和窄波束为两个不同的波束，他们的波束信息不同，即类型D的准同位属性不同。QCL-type D用于辅助波束赋形，比如用于形成空间滤波器，波束指示等。对于QCL-TypeD，可以分别从发送端和接收端两个角度理解。从发送端来看，如果两个天线端口是QCL-TypeD的，表示这两个天线端口的对应的波束方向在空间上是一致的。从接收端来看，如果两个天线端口是QCL-TypeD的，表示这个接收端能够在相同的波束方向上接收到这两个天线端口发送的信号。
在本说明书中描述的参考“一个实施例”或“一些实施例”等意味着在本申请的一个或多个实施例中包括结合该实施例描述的特定特征、结构或特点。由此，在本说明书中的不同之处出现的语句“在一个实施例中”、“在一些实施例中”、“在其他一些实施例中”、“在另外一些实施例中”等不是必然都参考相同的实施例，而是意味着“一个或多个但不是所有的实施例”，除非是以其他方式另外特别强调。术语“包括”、“包含”、“具有”及它们的变形都意味着“包括但不限于”，除非是以其他方式另外特别强调。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，可以表示：a,b,c,a-b,a-c,b-c,或a-b-c，其中a,b,c可以是单个，也可以是多个。
本申请实施例中的终端设备可以指用户设备、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其 它处理设备、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(Public Land Mobile Network，PLMN)中的终端设备等，本申请实施例对此并不限定。
示例性地，终端设备中可以包括：无线资源控制(radio resource control，RRC)信令交互模块、媒体接入控制(media access control，MAC)信令交互模块、以及物理(physical，PHY)信令交互模块。其中，RRC信令交互模块可以为：网络设备和终端设备用于发送及接收RRC信令的模块。MAC信令交互模块可以为：网络设备和终端设备用于发送及接收MAC控制元素(control element，CE)信令的模块。PHY信令及数据可以为：网络设备和终端设备用于发送及接收上行控制信令或下行控制信令、上下行数据或下行数据的模块。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备可以是全球移动通讯(Global System of Mobile communication，GSM)系统或码分多址(Code Division Multiple Access，CDMA)中的基站(Base Transceiver Station，BTS)，也可以是宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional NodeB，eNB或eNodeB)，还可以是云无线接入网络(Cloud Radio Access Network，CRAN)场景下的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的接入网设备(例如gNB)或者未来演进的PLMN网络中的接入网设备等，本申请实施例并不限定。
示例性地，网络设备中也可以包括：RRC信令交互模块、MAC信令交互模块、以及PHY信令交互模块。
在一些部署中，网络设备可以包括集中式单元(centralized unit，CU)和(distributed unit，DU)。网络设备还可以包括有源天线单元(active antenna unit，AAU)。CU实现网络设备的部分功能，DU实现网络设备的部分功能，比如，CU负责处理非实时协议和服务，实现无线资源控制(radio resource control，RRC)，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能。DU负责处理物理层协议和实时服务，实现无线链路控制(radio link control，RLC)层、媒体接入控制(media access control，MAC)层和物理(physical，PHY)层的功能。AAU实现部分物理层处理功能、射频处理及有源天线的相关功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令，也可以认为是由DU发送的，或者，由DU+AAU发送的。可以理解的是，网络设备可以为包括CU节点、DU节点、AAU节点中一项或多项的设备。此外，可以将CU划分为接入网(radio access network，RAN)中的网络设备，也可以将CU划分为核心网(core network，CN)中的网络设备，本申请对此不做限定。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
本申请实施例中，以终端设备和网络设备之间的交互为例进行说明，本申请实施例提供的方法还可以适用于其他执行主体之间的交互，例如可以是终端设备芯片或模块，与网 络设备中的芯片或模块之间的交互，当执行主体为芯片或模块时，可以参考本申请实施例中的描述，在此不再赘述。
在下行数据传输中，网络设备在采用一个特定的波束向终端设备发送数据时，需要告知终端设备其采用的发送波束信息，这样终端设备才能采用与该发送波束相对应的接收波束来接收网络设备发送的数据。网络设备通过下行控制信息(downlink control information，DCI)中的TCI(transmission configuration index，传输配置编号)字段来向终端设备指示其采用的发送波束的相关信息。其中，TCI字段包括3比特，可以具体表示8个不同的值(codepoint)。TCI字段的每个值对应一个传输配置编号状态(TCI-state)的索引，该索引可以标识一个TCI-state。TCI-state包括多个参数，通过这些参数可以确定发送波束的相关信息。TCI-state是由网络设备配置给终端设备的，举例来说，TCI-state可以包括一个TCI-state标识，和两个QCL信息(QCL-Info)。TCI-state标识可以视为TCI-state的索引，指示一个TCI-state，每个QCL-Info包括一个小区(cell)字段和带宽部分(Bandwidth part，BWP)标识字段，分别表示该TCI-state应用于哪个小区的哪个bwp，即不同小区或相同小区的不同bwp可以配置不同QCL-Info。QCL-Info还包括一个参考信号(reference Signal)字段，用于表示TCI-state与哪个参考信号资源构成准同位关系。
需要说明的是，在第三代伙伴计划(the 3rd generation partnership project，3GPP)R15(release 15)协议中，一般不会出现“波束”这个词汇，波束一般是通过其他术语进行代替的。例如，在数据传输和信道测量中，波束都是与参考信号资源进行对应的，一个波束对应一个参考信号资源。因此，本申请实施例中，描述的“TCI-state与哪个参考信号资源构成QCL关系”，实质是指TCI-state与哪个波束构成QCL关系。QCL关系是指两个参考信号资源(或两个天线端口，天线端口和参考信号资源也是一一对应的)在具有某些相同的空间参数。具体哪些空间参数是相同的取决于该QCL-Info的类型，QCL-Info的类型通过QCL类型(qcl-Type)字段指示。QCL类型字段可以有四种取值，分别为typeA，typeB，typeC，typeD。以typeD为例，typeD表示两个参考信号资源具有相同的空间接收参数信息，即两个波束具有相同的接收波束。TCI-state包括的两个QCL-Info中最多可能有一个类型是TypeD的。
本申请实施例中，网络设备使用TCI-state向终端设备发送下行数据之前，需要为终端设备配置多个TCI-state。网络设备配置多个TCI-state后，还需要通过激活其中至少一个TCI-state。网络设备激活至少一个TCI-state之后，还会向终端设备指示激活的TCI-state中的一个TCI-state。例如，网络设备发送给终端设备的DCI中的TCI字段的值为000，表示数据传输波束采用的000对应的TCI-state。该TCI-state内的类型为typeD的QCL-Info所包含的referenceSignal是索引为#1的CSI-RS，表示数据传输采用的波束与索引为#1的CSI-RS对应的接收波束是相同的。索引为#1的CSI-RS对应的接收波束可通过波束测量流程来确定，对终端设备来说是已知的。因此，通过指示TCI-state，终端设备就可以确定数据传输波束对应的接收波束，从而采用相应的接收波束来接收网络设备发送的下行数据。
需要说明的是，本申请实施例提供的方法可以用于指示下行传输接收波束信息或TCI-state，也可以用于指示上行传输的发送波束信息或空间关系(spatial relation)。当应用于指示上行传输的发送波束信息或空间关系时，只需要将下述方法中的TCI-state替换为 spatial relation或者探测参考信号(Sounding Reference Signal)资源指示(resource indicator)即可。
下面将详细描述网络设备如何激活TCI-state以及如何指示TCI-state。如图2所示，为本申请实施例提供的一种传输配置编号状态指示方法流程示意图。参见图2，该方法包括：
步骤200：网络设备为终端设备配置多个TCI-state。
网络设备可以通过RRC信令配置多个TCI-state，具体可以参考现有技术中的描述，在此不再赘述。网络设备配置的多个TCI-state是用于下行数据传输的。目前，发送至终端设备的下行数据一般通过PDSCH承载，因此网络设备配置的多个TCI-state也可以是指用于物理下行共享信道(physical downlink shared channel，PDSCH)的TCI-state。
步骤201：网络设备发送第一消息。
所述第一消息指示或激活P个TCI-state组；所述P个TCI-state组中的每个TCI-state组包括至少一个TCI-state，P为大于1的整数。所述P个TCI-state组包括的TCI-state是网络设备从配置的多个TCI-state中选择的，具体如何选择，本申请实施例并不限定。
其中，第一消息可以为MAC CE信令或者其他信令，如RRC信令或DCI信令，本申请实施例并不限定。本申请中第一消息指示P个TCI-state组和第一消息激活P个TCI-state组的含义是相同的，为了避免赘述，本申请统一采用“指示”，但应理解，“指示”也可以替换为“激活”。
步骤202：终端设备接收来自网络设备的第一消息。
步骤203：网络设备从P个TCI-state组中确定第一TCI-state组，并向终端设备发送第二消息。
其中，所述第一TCI-state组为向所述终端设备传输下行数据所使用的一个TCI-state组；所述第二消息用于指示所述第一TCI-state组。例如，所述第二消息包括TCI(Transmission configuration indication)字段，所述P个TCI-state组与所述第二消息中的TCI字段的P个TCI字段值一一对应，所述第二消息中的TCI字段可以用于指示所述第一TCI-state组。例如，TCI字段包括3比特，可以具体表示8个不同的TCI字段值(codepoint)，TCI字段的每个TCI字段值对应一个TCI-state组，网络设备从而可以通过TCI字段向终端设备指示其采用的TCI-state组。其中，TCI字段的TCI字段值的数量，可以大于或等于P。
需要说明的是，第二消息可以为DCI信令，也可以是其他信令，如RRC信令或MAC CE信令等，本申请实施例并不限定。
步骤204：终端设备接收来自网络设备的第二消息，根据所述第二消息确定第一TCI-state组。
通过上面的过程可知，本申请实施例中，网络设备配置多个TCI-state之后，可以向终端设备指示或激活P个TCI-state组。每个TCI-state组可以包括多个TCI-state，从而使能基于多TRP或多TCI-state的传输。
本申请实施例中，网络设备可以通过多种方式指示P个TCI-state组。
一种可能的实现方式中，网络设备可以通过第一消息指示所述P个TCI-state组，此时第一消息可以携带P个TCI-state组中每个TCI-state组包括的TCI-state。
另一种可能的实现方式中，网络设备可以间接指示P个TCI-state组。在该实现方式中，P个TCI-state组是Q个TCI-state列表中的TCI-state按照预设顺序配对组成的。其中，所 述Q个TCI-state列表中的每个TCI-state列表关联一个波束或者TRP，表示该TCI-state列表中的TCI-state是用于该波束或者TRP传输下行数据的。所述Q个TCI-state列表中的每个TCI-state列表包括至少一个TCI-state，Q为大于1的整数。
在该实现方式中，可能存在多种具体的指示方法。方法一：通过TCI-state的索引来表示激活的TCI-state。
在方法一中，网络设备发送的第一消息中可以包括Q个TCI-state索引列表，所述Q个TCI-state索引列表中的每个TCI-state索引列表可以包括一个或多个TCI-state的索引。
Q个TCI-state索引列表可以由单个第一消息携带，也可以通过Q个第一消息分别携带。
方法二：通过比特位图(bitmap)来表示激活的TCI-state。
方法二中，网络设备发送的第一消息中可以包括Q个比特位图，所述Q个比特位图中的每个比特位图用于指示Q个TCI-state列表中的一个TCI-state列表中所包括的TCI-state。
举例来说，每个比特位图中的每个比特对应一个TCI-state，比特值为1表示激活该TCI-state，比特值为0表示不激活该TCI-state，所有比特值为1的TCI-state组成了对应的TCI-state列表。或者反过来，比特值为0表示激活该TCI-state，比特值为1表示不激活该TCI-state，所有比特值为0的TCI-state组成了对应的TCI-state列表。
上述Q个比特位图可以由单个第一消息携带，也可以通过Q个第一消息分别携带。
具体采用上述两个方法中的哪一种，可以通过RRC信令进行指示，或由终端设备上报给网络设备。不论方法一还是方法二，网络设备都是通过第一消息指示Q个TCI-state列表，通过Q个TCI-state列表中的TCI-state按照预设顺序配对，组成P个TCI-state组。需要说明的是，Q个TCI-state列表可以通过一个第一消息进行指示，也可以通过多个第一消息进行指示，本申请实施例对此并不限定，例如通过Q个第一消息进行指示，每个第一消息指示一个TCI-state列表。不失一般性，本申请实施例中所描述的配对，是从多个TCI-state列表中各取一个TCI-state，组成一个TCI-state组，这一个TCI-state组可以映射到一个TCI字段值。配对也可以表述为对应，映射等，本申请实施例不作限定。
关于TCI-state与TCI-state的映射，以及TCI-state与TCI字段值的映射，可能有两种实现方式：
方式1.各个TCI-state列表中的TCI-state与TCI-state先进行配对为TCI-state组，然后TCI-state组与到TCI字段值进行映射；
例如，以两个TCI-state列表为例，分别为列表一和列表二。列表一包括的TCI-state的排列顺序依次为TCI-state#1、TCI-state#3，列表二包括的TCI-state的排列顺序依次为TCI-state#2、TCI-state#5。那么可以配对组成2个TCI-state组，分别为{TCI-state#1,TCI-state#2}，{TCI-state#3,TCI-state#5}，对应的TCI字段值可以分别为0、1。
方式2.各个TCI-state列表中的TCI-state各自独立的映射到各个TCI字段值，映射到相同TCI字段值的TCI-state作为一组，一起用于PDSCH传输，即网络设备通过DCI指示一个TCI字段值给终端设备，终端设备根据该字段值对应的TCI-state组进行数据的接收。
例如，以两个TCI-state列表为例，分别为列表一和列表二。列表一包括的TCI-state的排列顺序依次为TCI-state#1、TCI-state#3，列表二包括的TCI-state的排列顺序依次为TCI-state#2、TCI-state#5。
如果列表一中的TCI-state#1、TCI-state#3分别映射的TCI字段值为0和1，列表二中 的TCI-state#2和TCI-state#5分别映射的TCI字段值为0和1，那么可以配对组成2个TCI-state组，分别为{TCI-state#1,TCI-state#2}，{TCI-state#3,TCI-state#5}，对应的TCI字段值可以分别为0、1。
举例来说，本申请实施例中，Q个TCI-state列表中的TCI-state是按照预设顺序进行一一配对，组成P个TCI-state组的。所述预设顺序可以为TCI-state在TCI-state列表中的排列顺序，或者所述预设顺序可以为TCI-state的索引在TCI-state列表中按照索引大小排序的顺序等。
或者，再举例来说，每个TCI-state列表中的TCI-state按照预算顺序映射到各个TCI字段值。映射到同一TCI字段值的TCI-state作为一个TCI-state组，用于PDSCH传输。
举例来说，当所述预设顺序为TCI-state在TCI-state列表中的排列顺序(例如TCI-state索引在第一消息中的排列顺序)时，所述Q个TCI-state列表中的每个TCI-state列表中，排列顺序相同的TCI-state配对为一个TCI-state组。也就是说，Q个TCI-state列表中的第一个TCI-state组成第一个TCI-state组，映射到TCI字段值0；Q个TCI-state列表中的第二个TCI-state组成第二个TCI-state组，映射到TCI字段值1；以此类推，直到遍历完Q个TCI-state列表中的所有TCI-state。或者，换句话说，Q个TCI-state列表中的第i个TCI-state组成第i个TCI-state组，映射到TCI字段值i-1；
或者，当所述预设顺序为TCI-state在TCI-state列表中的排列顺序时，所述Q个TCI-state列表中的每个TCI-state列表中的各个TCI-state，按照TCI-state的排列顺序(从大到小或从小打到的顺序)和TCI字段值递增或递减的顺序依次映射到各个TCI字段值。例如，每个TCI-state列表中的第一个TCI-state映射到TCI字段值0，第二个TCI-state映射到TCI字段值1，以此类推。例如，每个TCI-state列表中的第一个TCI-state映射到最大的TCI字段值，第二个TCI-state映射到第二大的TCI字段值，以此类推。
TCI-state在TCI-state列表中的排列顺序是TCI-state列表包括的各个TCI-state在第一消息中的排列顺序。例如第一消息指示了Q个TCI-state索引列表，每个TCI-state索引列表中的TCI-state按一定顺序在第一消息中进行排列，这就是TCI-state在TCI-state列表中的排列顺序。
例如，以Q等于2为例，此时包括两个TCI-state列表，分别为列表一和列表二，具体可以参考表1所示。
表1
列表一 TCI-state#1 TCI-state#3 TCI-state#6 TCI-state#4
列表二 TCI-state#2 TCI-state#5 TCI-state#8 TCI-state#7
表1中，列表一包括的TCI-state的排列顺序依次为TCI-state#1、TCI-state#3、TCI-state#6以及TCI-state#4，列表二包括的TCI-state的排列顺序依次为TCI-state#2、TCI-state#5、TCI-state#8以及TCI-state#7。那么列表一中的TCI-state#1和列表二中的TCI-state#2可以配对，列表一中的TCI-state#3和列表二中的TCI-state#5可以配对，列表一中的TCI-state#6和列表二中的TCI-state#8可以配对，列表一中的TCI-state#4和列表二中的TCI-state#7可以配对，组成4个TCI-state组，分别为{TCI-state#1,TCI-state#2}，{TCI-state#3,TCI-state#5}，{TCI-state#6,TCI-state#8}，{TCI-state#4,TCI-state#7}，对应的TCI字段值可以分别为0、1、2以及3，用于PDSCH传输，具体可以参考表2所示。
表2
TCI-state组 TCI字段值
{TCI-state#1,TCI-state#2} 0
{TCI-state#3,TCI-state#5} 1
{TCI-state#6,TCI-state#8} 2
{TCI-state#4,TCI-state#7} 3
再举例来说，当所述预设顺序为TCI-state的索引按照大小排序时，所述Q个TCI-state列表中的每个TCI-state列表中，按照大小排序后顺序相同的索引对应的TCI-state配对为一个TCI-state组。TCI-state的索引按照大小排序可以是按照索引从小到大的顺序，或者按照索引从大到小的顺序。
或者，当所述预设顺序为TCI-state的索引按照大小排序时，所述Q个TCI-state列表中的每个TCI-state列表中的各个TCI-state，按照TCI-state的大小顺序(从大到小或从小打到的顺序)以及TCI字段值递增或递减的顺序依次映射到各个TCI字段值。例如，每个TCI-state列表中索引最小的TCI-state映射到TCI字段值0，索引第二小的TCI-state映射到TCI字段值1，以此类推。例如，每个TCI-state列表中的索引最小的TCI-state映射到最大的TCI字段值，索引第二小的TCI-state映射到第二大的TCI字段值，以此类推。
Q个TCI-state列表中的TCI-state可以按照索引从小到大的顺序一一对应，组成各个TCI-state组，映射到各个TCI-state字段值。例如，Q个TCI-state列表中索引最小的TCI-state组成第一个TCI-state组，映射到TCI字段值0；Q个TCI-state列表中索引第二小的TCI-state组成第二个TCI-state组，映射到TCI字段值1；以此类推，直到遍历完Q个TCI-state列表中的所有TCI-state。或者，换句话说，Q个TCI-state列表中索引第i小的TCI-state组成第i个TCI-state组，映射到TCI字段值i-1；
Q个TCI-state列表中的TCI-state可以按照索引从大到小的顺序一一对应，组成各个TCI-state组，映射到各个TCI-state字段值。Q个TCI-state列表中索引最大的TCI-state组成第一个TCI-state组，映射到TCI字段值0；Q个TCI-state列表中索引第二大的TCI-state组成第二个TCI-state组，映射到TCI字段值1；以此类推，直到遍历完Q个TCI-state列表中的所有TCI-state。或者，换句话说，Q个TCI-state列表中索引第i大的TCI-state组成第i个TCI-state组，映射到TCI字段值i-1；
具体采用上述两个预设顺序中的哪一种，可以通过RRC信令进行指示，或由终端设备上报给网络设备。
结合上面的例子中的列表一和列表二，此时列表一中的TCI-state#1和列表二中的TCI-state#2可以配对，列表一中的TCI-state#3和列表二中的TCI-state#5可以配对，列表一中的TCI-state#4和列表二中的TCI-state#7可以配对，列表一中的TCI-state#6和列表二中的TCI-state#8可以配对，组成4个TCI-state组，分别为{TCI-state#1,TCI-state#2}，{TCI-state#3,TCI-state#5}，{TCI-state#4,TCI-state#7}，{TCI-state#6,TCI-state#8}，对应的TCI字段值可以分别为0、1、2以及3，具体可以参考表3所示。
表3
TCI-state组 TCI字段值
{TCI-state#1,TCI-state#2} 0
{TCI-state#3,TCI-state#5} 1
{TCI-state#4,TCI-state#7} 2
{TCI-state#6,TCI-state#8} 3
进一步的，本申请实施例中，可以限定Q个TCI-state列表中每个TCI-state列表包括的TCI-state数量是相同的。这样Q个TCI-state列表的每个TCI-state列表中，顺序相同的TCI-state可以一一配对，生成的每个TCI-state组都包括相同数量的TCI-state。例如，假设两个TCI-state列表都包括P个TCI-state，两个列表中的P个TCI-state按照预设顺序一一配对，组成P个TCI-state组，每个TCI-state组包括两个TCI-state。
在这种情况下，P个TCI-state组可以与TCI字段值一一对应。举例来说，P个TCI-state组与TCI字段的取值的对应关系可以是：TCI-state组1对应TCI字段的取值为0，TCI-state组2对应TCI字段的取值为1，其它情况可以以此类推。也可以将上述顺序反过来，TCI-state组1对应TCI字段的取值为TCI字段的最大值，TCI-state组2对应TCI字段的取值为TCI字段倒数第二大的取值，以此类推。其中，TCI-state组1是可以指两个TCI-state列表中的按照排列顺序排在第一个的TCI-state配对组成的TCI-state组，或者是指两个TCI-state列表中索引最小的TCI-state配对组成的TCI-state组，其它情况不在赘述。
进一步的，本申请实施例中，Q个TCI-state列表中每个TCI-state列表包括的TCI-state数量也可以不相同。
例如，以两个TCI-state列表为例进行说明，列表一中包括M个TCI-state，列表二中包括N个TCI-state，M不等于N。
在这种情况下，以M>N为例，M<N的情况可以类推。列表一的M个TCI-state中的N个TCI-state可以与列表二中的N个TCI-state按照预设顺序进行一一配对。
一种方式是，列表一中排在最前面的N个TCI-state与列表二中的N个TCI-state按照TCI-state在TCI-state列表中的排列顺序一一对应，组成各个TCI-state组，并映射到各个TCI字段值。列表一中剩余M-N个TCI-state按TCI-state在TCI-state列表中的排列顺序依次映射到剩余的TCI字段值。也就是说，列表一中的第一个TCI-state与列表二中的第一个TCI-state组成第一个TCI-state组，映射到TCI字段值0；列表一中的第二个TCI-state与列表二中的第二个TCI-state组成第二个TCI-state组，映射到TCI字段值1；以此类推，列表一中的第N个TCI-state与列表二中的第N个TCI-state组成第N个TCI-state组，映射到TCI字段值N-1。剩余M-N个TCI-state按照排列顺序依次映射到TCI字段值N,N+1,…,M-1。上述TCI-state组与TCI字段值的映射关系也可以反过来，即第一个TCI-state组映射到最大的TCI字段值，第二个TCI-state组映射到第二大的TCI字段值，以此类推。
例如M＝4，N＝2，列表一和列表二可以参考表4所示。
表4
列表一 TCI-state#1 TCI-state#3 TCI-state#2 TCI-state#4
列表二 TCI-state#6 TCI-state#5    
表4中，列表一的M个TCI-state的排列顺序为TCI-state#1、TCI-state#3、TCI-state#2以及TCI-state#4，列表二的NM个TCI-state的排列顺序为TCI-state#6以及TCI-state#5。按照排列顺序，列表一中的TCI-state#1与列表二中的TCI-state#6配对，组成TCI-state组 {TCI-state#1,TCI-state#6}，列表一中的TCI-state#3与列表二中的TCI-state#5配对，组成TCI-state组{TCI-state#3,TCI-state#5}。
例如，结合表4，列表一与列表二配对，可以确定4个TCI-state组，分别为{TCI-state#1,TCI-state#6}、{TCI-state#3,TCI-state#5}、{TCI-state#2}以及{TCI-state#4}，分别对应TCI字段值0、1、2以及3，具体可以参考表5所示。
表5
TCI-state组 TCI字段值
{TCI-state#1,TCI-state#6} 0
{TCI-state#3,TCI-state#5} 1
{TCI-state#2} 2
{TCI-state#4} 3
表5中，由于M大于N，前2个TCI-state组包括均包括2个TCI-state，后2个TCI-state组均包括1个TCI-state。
一种方式是，列表一中排在最后面的N个TCI-state与列表二中的N个TCI-state按照TCI-state在TCI-state列表中的排列顺序的倒序一一对应，组成各个TCI-state组，并映射到各个TCI字段值。列表一中剩余M-N个TCI-state按TCI-state在TCI-state列表中的排列顺序的倒序依次映射到剩余的TCI字段值。也就是说，列表一中的最后一个TCI-state与列表二中的最后一个TCI-state组成第一个TCI-state组，映射到TCI字段值0；列表一中的倒数第二个TCI-state与列表二中的倒数第二个TCI-state组成第二个TCI-state组，映射到TCI字段值1；以此类推，列表一中的倒数第N个TCI-state与列表二中的倒数第N个TCI-state组成第N个TCI-state组，映射到TCI字段值N-1。剩余M-N个TCI-state按照排列顺序的倒序依次映射到TCI字段值N,N+1,…,M-1。上述TCI-state组与TCI字段值的映射关系也可以反过来，即第一个TCI-state组映射到最大的TCI字段值，第二个TCI-state组映射到第二大的TCI字段值，以此类推。
例如，结合表4，在该方式下，列表一与列表二配对，可以确定4个TCI-state组，分别为{TCI-state#4,TCI-state#5}、{TCI-state#2,TCI-state#6}、{TCI-state#3}以及{TCI-state#1}，分别对应TCI字段值0、1、2以及3，具体可以参考表6所示。
表6
TCI-state组 TCI字段值
{TCI-state#4,TCI-state#5} 0
{TCI-state#2,TCI-state#6} 1
{TCI-state#3} 2
{TCI-state#1} 3
另一种方式是，列表一中索引最小的N个TCI-state与列表二中的N个TCI-state按照索引从小到大的顺序一一对应，组成各个TCI-state组，并映射到各个TCI字段值。列表一中剩余M-N个TCI-state按索引从小到大的顺序依次映射到剩余的TCI字段值。也就是说，列表一中索引最小的TCI-state与列表二中索引最小的TCI-state组成第一个TCI-state组，映射到TCI字段值0；列表一中索引第二小的TCI-state与列表二中索引第二小的TCI-state 组成第二个TCI-state组，映射到TCI字段值1；以此类推，列表一中的索引第N小TCI-state与列表二中的索引第N小TCI-state组成第N个TCI-state组，映射到TCI字段值N-1。剩余M-N个TCI-state按索引从小到大的顺序依次映射到TCI字段值N,N+1,…,M-1。上述TCI-state组与TCI字段值的映射关系也可以反过来，即第一个TCI-state组映射到最大的TCI字段值，第二个TCI-state组映射到第二大的TCI字段值，以此类推。
例如，结合表4，在该方式下，列表一与列表二配对，可以确定4个TCI-state组，分别为{TCI-state#1,TCI-state#5}、{TCI-state#2,TCI-state#6}、{TCI-state#3}以及{TCI-state#4}，分别对应TCI字段值0、1、2以及3，具体可以参考表7所示。
表7
TCI-state组 TCI字段值
{TCI-state#1,TCI-state#5} 0
{TCI-state#2,TCI-state#6} 1
{TCI-state#3} 2
{TCI-state#4} 3
另一种方式是，列表一中索引最大的N个TCI-state与列表二中的N个TCI-state按照索引从大到小的顺序一一对应，组成各个TCI-state组，并映射到各个TCI字段值。列表一中剩余M-N个TCI-state按索引从大到小的顺序依次映射到剩余的TCI字段值。也就是说，列表一中索引最大的TCI-state与列表二中索引最大的TCI-state组成第一个TCI-state组，映射到TCI字段值0；列表一中索引第二大的TCI-state与列表二中索引第二大的TCI-state组成第二个TCI-state组，映射到TCI字段值1；以此类推，列表一中的索引第N大TCI-state与列表二中的索引第N大TCI-state组成第N个TCI-state组，映射到TCI字段值N-1。剩余M-N个TCI-state按索引从大到小的顺序依次映射到TCI字段值N,N+1,…,M-1。上述TCI-state组与TCI字段值的映射关系也可以反过来，即第一个TCI-state组映射到最大的TCI字段值，第二个TCI-state组映射到第二大的TCI字段值，以此类推。
例如，结合表4，在该方式下，列表一与列表二配对，可以确定4个TCI-state组，分别为{TCI-state#4,TCI-state#6}、{TCI-state#3,TCI-state#5}、{TCI-state#2}以及{TCI-state#1}，分别对应TCI字段值0、1、2以及3，具体可以参考表8所示。
表8
TCI-state组 TCI字段值
{TCI-state#4,TCI-state#6} 0
{TCI-state#3,TCI-state#5} 1
{TCI-state#2} 2
{TCI-state#1} 3
具体采用上述四个方法中的哪一种，可以通过RRC信令进行指示，或由终端设备上报给网络设备，或者可以通过协议约定，本申请实施例并不限定。
当M>N时，会存在M-N个TCI-state无法配对的情况。对于这种情况，一种方法是把没有配对的TCI-state也当作一个TCI-state组，映射到一个TCI-state字段值。例如，上述四种方法就是这种方式。
另一种方法中，当M>N时，存在M-N个TCI-state无法配对的情况时，忽略没有配对的TCI-state，即把进行了配对的TCI-state映射到TCI字段值。例如，结合表4，列表一{TCI-state#1，TCI-state#3，TCI-state#2，TCI-state#4}与列表二{TCI-state#6，TCI-state#5}配对，能确定2个TCI-state组，分别为{TCI-state#1,TCI-state#6}和{TCI-state#3,TCI-state#5}，分别对应TCI字段值0和1，具体可以参考表9所示。
表9
TCI-state组 TCI字段值
{TCI-state#1,TCI-state#6} 0
{TCI-state#3,TCI-state#5} 1
表9中，虽然列表一包括4个TCI-state，但是由于列表二包括2个TCI-state，最终能确定2个TCI-state组。
通过表9可知，当M>N时，M个TCI-state和N个TCI-state配对能确定N个可用的TCI-state组。这N个TCI-state组与TCI字段值的对应关系具体是：根据所述N个TCI-state在对应列表中的排列顺序或N个TCI-state的索引从小到大或从大到小的顺序一一配对，生成N个TCI-state组，并将N个依次映射到一个TCI字段值。各TCI-state组对应的TCI-state值的取值从0开始，依次递增。或从最大值开始，依次递减。例如，第一个TCI-state组映射到TCI字段值0，第二个TCI-state组映射到TCI字段值1，以此类推。也可以将上述顺序反过来，第一个TCI-state组映射到最大的TCI字段值，第二个TCI-state组映射到倒数第二大的TCI字段值，以此类推。
具体采用上述两个方法中的哪一种，可以通过RRC信令进行指示，或由终端设备上报给网络设备。
示例性的，本申请实施例中，一个TCI-state列表中可以包括多个相同的TCI-state。例如TCI-state列表{TCI-state#0，TCI-state#1，TCI-state#0，TCI-state#2}中，TCI-state#0出现了两次，可以实现一个TCI-state与多个不同的TCI-state分别配对。例如，TCI-state#0与TCI-state#2和TCI-state#3都配对了。当然，也可以限定一个TCI-state列表中不能包括相同的TCI-state，即一个TCI-state可能与一个TCI-state配对，不能与多个不同的TCI-state分别配对。
示例性的，本申请实施例中，多个TCI-state列表中可以包括相同的TCI-state。例如两个列表中都包括TCI-state#0。当然，也可以限定每个TCI-state列表中不能包括相同的TCI-state。
本申请实施例中，两个相同的TCI-state可以进行配对，即同一TCI-state进行自配对，组成一个TCI-state组，映射到一个TCI字段值。例如TCI-state组为{TCI-state#0，TCI-state#0}，此时TCI字段值对应的TCI-state组中包括的两个TCI-state可以是相同的。当然，也可以限定两个相同的TCI-state不能进行配对，即TCI字段值对应的TCI-state组中包括的每个TCI-state必须是不同的。
当同一TCI-state进行自配对组成一个TCI-state组，映射到一个TCI字段值时，表示实际为该TCI字段值激活了一个TCI-state。也就是说，如果一个TCI字段值映射到多个相同的TCI-state，如TCI-state#i，终端设备应该认为网络设备实际为该TCI字段值激活了一个TCI-state，如TCI-state#i，或者说，终端设备认为该TCI字段值对应一个TCI-state，即TCI-state#i。例如，TCI字段值0映射到两个相同的TCI-state，如{TCI-state#1，TCI-state#1}， 终端设备认为实际为TCI字段值0激活了一个TCI-state，即TCI-state#1。或者说，终端设备认为TCI字段值0实际对应单个TCI-state，即TCI-state#1。在数据传输时，如果采用TCI字段值0，网络设备会采用一个TCI-state，即TCI-state#1进行传输，终端设备采用TCI-state#1对应的接收波束进行接收。换句话说，如果DCI的某个TCI字段值对应多个(例如两个)相同的TCI-state，如TCI-state#i，终端设备可以认为该TCI字段值实际对应单个TCI-state，即TCI-state#i。或者，如果网络设备通过DCI的TCI字段给终端设备指示了多个(例如两个)相同的TCI-state#i，那么终端设备认为网络设备采用一个TCI-state，即TCI-state#i，进行PDSCH的传输。
当每个TCI-state列表包括的TCI-state数相等时，激活的TCI-state组均包括多个TCI-state，没有包括一个TCI-state的TCI-state组。这种情况下如果想要激活包括一个TCI-state的TCI-state组，可以采用以下方法。第一种方法，将两个相同的TCI-state进行配对，表示激活了一个TCI-state。例如，将TCI-state#0和TCI-state#0进行配对，表示实际激活了TCI-state#0。第二种方法，定义一个或多个预设索引，如‘1111111’，当要激活包括一个TCI-state的TCI-state组时，可以将要激活的TCI-state与该一个或多个预设索引进行配对，组成一个TCI-state组，对应到一个TCI字段值，表示实际激活了一个TCI-state。所述一个或多个预设索引可以是网络设备配置的，或者协议规定的固定值，或者终端设备上报的值，本申请实施例并不限定。
上述方法中，激活的一个TCI-state组内的至少一个TCI-state是用于多波束或者多TRP联合传输的，即每个波束或者TRP分别采用其中一个TCI-state向终端设备传输PDSCH。其中，任意两个波束或者TRP可以同时传输，也可以分时传输。如果是同时传输，则上述两个TCI-state必须满足同收要求，即这两个TCI-state是能被终端设备同时接收的。即这两个TCI-state中的typeD类型的QCL-info中包括的参考信号资源是能被终端设备同时接收的。例如，这两个TCI-state中的typeD类型的QCL-info中包括的参考信号资源，必须是终端设备之前上报给网络设备的两个能被其同时接收的资源。或者，这两个TCI-state中的typeD类型的QCL-info中包括的两个参考信号资源，与终端设备之前上报给网络设备的两个能被其同时接收的资源分别满足typeD类型的QCL关系。
上述方法中同一个TCI-state组中包括的多个TCI-state必须满足同收要求，或者同一个TCI字段值对应的TCI-state组中包括的多个TCI-state必须满足同收要求。或者，在特定传输模式下，同一个TCI字段值对应的TCI-state组中包括的多个TCI-state需要满足同收要求。例如，两个TRP是采用两个TCI-state进行同时传输的时候，采用的TCI字段值对应的两个TCI-state需要满足同收要求，或者激活的每个TCI-state组对应的两个TCI-state都需要满足同收要求，或者每个TCI字段值对应的两个TCI-state都需要满足同收要求。其中，传输模式可以通过RRC信令进行配置。如果通过RRC信令配置的传输模式中，两个TRP采用两个TCI-state同时向终端设备传输数据，则在进行TCI-state的激活时，同一TCI-state组对应的两个TCI-state需要满足同收要求。如果通过RRC信令配置的传输模式中，两个TRP采用两个TCI-state分时向终端设备传输数据，则在进行TCI-state的激活时，同一TCI-state组对应的两个TCI-state不需要满足同收要求。例如，如果传输模式参数，如URLLSchemeEnabler指示的传输模式为TDM时，例如TDMSchemeA，则不要求DCI指示的TCI-state组中的TCI-state是能被终端设备同时接收的。如果传输模式参数，如URLLSchemeEnabler指示的传输模式为FDM时，例如FDMSchemeA或FDMSchemeB， 则要求DCI指示的TCI-state组中的TCI-state是能被终端设备同时接收的。
或者，可以限定各TCI字段值对应的各个TCI-state组中，至少包括一个TCI-state组，其对应的多个TCI-state是能被终端设备同时接收的。或者，可以限定各TCI字段值对应的各个TCI-state组中，所有TCI-state组对应的多个TCI-state是能被终端设备同时接收的。或者，可以限定同一个第二消息激活的各个TCI-state组中，至少包括一个TCI-state组，其对应的多个TCI-state是能被终端设备同时接收的。或者，可以限定同一个第二消息激活的各个TCI-state组中，所有TCI-state组对应的多个TCI-state是能被终端设备同时接收的。
或者，可以限定各TCI字段值对应的各个TCI-state组中，至少包括一个TCI-state组，其对应的多个TCI-state是能被终端设备同时接收的，且至少包括一个TCI-state组，其对应的多个TCI-state是不需要被终端设备同时接收的。
在PDSCH传输中，如果网络设备DCI指示了两个TCI-state，并且这两个TCI-state是用于同时传输的，这时终端设备需要根据这两个TCI-state同时接收PDSCH。但是，终端设备有可能无法同时接收这两个TCI-state对应的数据，例如终端设备开启了一个天线面板，能生成一个TCI-state对应的接收波束。这时，终端设备可以放弃本次传输。或者，终端设备也可以选择接收其中一个TCI-state对应的数据，放弃另一个TCI-state对应的数据。具体接收哪一个TCI-state对应的数据，可以采用以下几种方法中的任意一种。具体采用哪一种，可以通过RRC信令进行指示，或由终端设备上报给网络设备。
方法1：接收TCI-state组中的第一个；
方法2：接收TCI-state组中的最后一个；
方法3：接收TCI-state组中索引最小的一个；
方法4：接收TCI-state组中索引最大的一个；
方法5：接收质量最好的那个；所述质量可以是指RSRP(Reference signal receiving power,参考信号接收功率)，RSRQ(Reference signal receiving quality,参考信号接收质量)，SNR(Signal to Noise Ratio,信号噪声比)，SIR(Signal to Interference Ratio,信号干扰比)，SINR(Signal to Interference and Noise Ratio,信号干扰噪声比)，RSSI(Received Signal Strength Indication接收的信号强度指示)，CQI(Channel Quality Indicator,信道质量标识)，PMI(Precoding Matrix Indicator,预编码矩阵标识)，RI(Rank Indicator,信道的秩的标识)，LI(Layer Indicator,层指示)中的任意一种。
如果两个TCI-state上传输的是同一个数据的不同RV，则接收RV最小的那个TCI-state。或者，可以在4个RV之间定义一个优先级，接收优先级最高的那个RV对应的TCI-state。例如，RV 0的优先级最高，那么当有一个TCI-state传输RV0，那么就接收该TCI-state。
另一方面，当两个TRP采用两个TCI-state发送PDCCH或PDSCH时，如果两个TCI-state对应的PDCCH或PDSCH在时间上是重叠的，那么这两个TCI-state必须是满足同收要求的。具体的，如果终端设备可以同时接收一个波束，例如终端设备上报一个天线面板，或能同时开启一个天线面板等，需要采用以下约束方法。具体采用哪一种方法，可以通过RRC信令进行指示，或由终端设备上报给网络设备。
方法一：两个TRP对应的CORESET必须采用相同的TCI-state。当两个CORESET分别对应两个TRP，即分别关联不同的第一索引值时，要求这两个CORESET激活的TCI-state是相同的，或者这两个CORESET激活的TCI-state中的typeD类型的QCL-info包括的参考信号资源是相同的，或者这两个CORESET满足typeD类型的准同位关系。该方法也适 用于PDSCH。当网络设备采用两个TCI-state(可以是同一DCI指示的两个TCI-state或两个不同的DCI分别指示的两个TCI-state)在同一个时隙传输PDSCH时，这两个TCI-state必须是相同的，或者这两个TCI-state中的typeD类型的QCL-info包括的参考信号资源是相同的，或者这两个PDSCH满足typeD类型的准同位关系。
方法二：两个TRP对应的CORESET可以采用不同的TCI-state。当两个CORESET分别对应两个TRP，即分别关联不同的第一索引值时，如果这两个CORESET激活的TCI-state(即用于PDCCH传输的TCI-state)不相同，或者这两个CORESET当前激活的TCI-state中的TypeD类型的QCL-info包括的参考信号资源不相同，或者这两个CORESET不满足typeD的QCL关系，规定这两个CORESET对应的时域资源要错开。的。即要求关联不同第一索引值得CORESET激活的TCI-state是相同的，或TCI-state中的typeD类型的QCL-info包括的参考信号资源是相同的，或关联不同第一索引值的CORESET满足typeD类型的准同位关系。该方法也适用于PDSCH。当网络设备采用两个TCI-state(可以是同一DCI指示的两个TCI-state或两个不同的DCI分别指示的两个TCI-state)在同一个时隙传输PDSCH时，如果两个TCI-state是不相同的，或者这两个TCI-state中的typeD类型的QCL-info包括的参考信号资源是不相同的，或者这两个PDSCH不满足typeD类型的准同位关系，则这两个PDSCH在时域上要错开。
方法三：两个TRP对应的CORESET可以采用不同的TCI-state。当两个CORESET分别对应两个TRP，即分别关联不同的第一索引值时，如果这两个CORESET不满足typeD的QCL关系，且这两个CORESET的时域资源有重叠时，终端设备接收上述CORESET中的一个。具体接收哪一个，可以根据以下任一规则：
规则1：接收对应第一索引值较小的那个CORESET；
规则2：接收对应第一索引值较大的那个CORESET；
规则3：如果两个CORESET对应的搜索空间都是公共搜索空间(Common Search Space，CSS)，那么接收对应的CSS索引最小的那个CORESET；
规则4：如果两个CORESET对应的搜索空间都是用户专属搜索空间(UE-specific Search Space，USS)，那么接收对应的USS索引最小的那个CORESET；
规则5：如果两个CORESET对应的搜索空间一个是CSS，另一个是USS，那么接收CSS对应的那个CORESET；
该方法也适用于PDSCH。当网络设备采用两个TCI-state(可以是同一DCI指示的两个TCI-state或两个不同的DCI分别指示的两个TCI-state)在同一个时隙传输PDSCH时，如果这两个PDSCH不满足typeD类型的准同位关系，并且这两个PDSCH在时域上有重叠，那么终端设备接收上述PDSCH中的一个。具体接收哪一个，可以根据以下任一规则：
规则1：接收调度PDCCH对应的CORESET关联的第一索引值较小的那个PDSCH；
规则2：接收调度PDCCH对应的CORESET关联的第一索引值较大的那个PDSCH；
规则3：如果两个PDSCH的调度PDCCH对应的CORESET对应的搜索空间都是公共搜索空间(Common Search Space，CSS)，那么接收对应的CSS索引最小的那个PDSCH；
规则4：如果两个PDSCH的调度PDCCH对应的CORESET对应的搜索空间都是用户专属搜索空间(UE-specific Search Space，USS)，那么接收对应的USS索引最小的那个PDSCH；
规则5：如果两个PDSCH的调度PDCCH对应的CORESET对应的搜索空间一个是 CSS，另一个是USS，那么接收对应CSS的那个PDSCH；
方法四：同一个TRP对应的CORESET必须采用相同的TCI-state。当两个CORESET对应同一个TRP，即关联同一个第一索引值时，要求这两个CORESET激活的TCI-state是相同的，或者这两个CORESET激活的TCI-state中的typeD类型的QCL-info包括的参考信号资源是相同的，或者这两个CORESET满足typeD类型的准同位关系。该方法也适用于PDSCH。当网络设备采用两个TCI-state(可以是两个关联相同第一索引值的CORESET对应的DCI分别指示的)在同一个时隙传输PDSCH时，这两个TCI-state必须是相同的，或者这两个TCI-state中的typeD类型的QCL-info包括的参考信号资源是相同的，或者这两个PDSCH满足typeD类型的准同位关系。
方法五：同一个TRP对应的CORESET可以采用不同的TCI-state。当两个CORESET对应同一个TRP，即关联同一个第一索引值时，如果这两个CORESET激活的TCI-state(即用于PDCCH传输的TCI-state)不相同，或者这两个CORESET当前激活的TCI-state中的TypeD类型的QCL-info包括的参考信号资源不相同，或者这两个CORESET不满足typeD的QCL关系，规定这两个CORESET对应的时域资源要错开。即要求关联同一第一索引值的CORESET激活的TCI-state是相同的，或TCI-state中的typeD类型的QCL-info包括的参考信号资源是相同的，或关联不同第一索引值得CORESET满足typeD类型的准同位关系。该方法也适用于PDSCH。当网络设备采用两个TCI-state(可以是两个关联相同第一索引值的CORESET对应的DCI分别指示的)在同一个时隙传输PDSCH时，如果两个TCI-state是不相同的，或者这两个TCI-state中的typeD类型的QCL-info包括的参考信号资源是不相同的，或者这两个PDSCH不满足typeD类型的准同位关系，则这两个PDSCH在时域上要错开。
方法六：同一个TRP对应的CORESET可以采用不同的TCI-state。当两个CORESET对应同一个TRP，即关联同一个第一索引值时，如果这两个CORESET不满足typeD的QCL关系，且这两个CORESET的时域资源有重叠时，终端设备接收上述CORESET中的一个。具体接收哪一个，可以根据以下任一规则：
规则1：接收对应第一索引值较小的那个CORESET；
规则2：接收对应第一索引值较大的那个CORESET；
规则3：如果两个CORESET对应的搜索空间都是公共搜索空间(Common Search Space，CSS)，那么接收对应的CSS索引最小的那个CORESET；
规则4：如果两个CORESET对应的搜索空间都是用户专属搜索空间(UE-specific Search Space，USS)，那么接收对应的USS索引最小的那个CORESET；
规则5：如果两个CORESET对应的搜索空间一个是CSS，另一个是USS，那么接收CSS对应的那个CORESET；
该方法也适用于PDSCH。当网络设备采用两个TCI-state(可以是两个关联相同第一索引值的CORESET对应的DCI分别指示的)在同一个时隙传输PDSCH时，如果这两个PDSCH不满足typeD类型的准同位关系，并且这两个PDSCH在时域上有重叠，那么终端设备接收上述PDSCH中的一个。具体接收哪一个，可以根据以下任一规则：
规则1：接收调度PDCCH对应的CORESET关联的第一索引值较小的那个PDSCH；
规则2：接收调度PDCCH对应的CORESET关联的第一索引值较大的那个PDSCH；
规则3：如果两个PDSCH的调度PDCCH对应的CORESET对应的搜索空间都是公共搜索空间(Common Search Space，CSS)，那么接收对应的CSS索引最小的那个PDSCH；
规则4：如果两个PDSCH的调度PDCCH对应的CORESET对应的搜索空间都是用户专属搜索空间(UE-specific Search Space，USS)，那么接收对应的USS索引最小的那个PDSCH；
规则5：如果两个PDSCH的调度PDCCH对应的CORESET对应的搜索空间一个是CSS，另一个是USS，那么接收对应CSS的那个PDSCH；
上述方法可以是在终端设备能接收其中一个TCI-state的情况下才执行的。例如，终端设备有一个接收天线面板，能接收其中一个TCI-state，这时需要采用上述方法选择接收哪一个。
基于前面的描述，网络设备激活P个TCI-state组之后，可以从所述P个TCI-state组中确定第一TCI-state组，作为传输下行数据的TCI-state组。网络设备可以向所述终端设备指示所述第一TCI-state组。具体的，结合图2中的描述，网络设备可以向终端设备发送第二消息，所述第二消息用于指示所述第一TCI-state组。具体的，第二消息中包括TCI字段，可以通过TCI字段指示第一TCI-state组。例如，第二消息可以为DCI等消息。
上述方法中，Q个TCI-state列表可以由单个第一消息携带。例如，一个第一消息(如MAC CE)中包括Q*N个TCI-state的索引。其中第一组N个TCI-state属于第一个TCI-state列表，第二组N个TCI-state属于第二个TCI-state列表，以此类推。例如，Q＝2时，前N个TCI-state属于第一个TCI-state列表，后N个TCI-state属于第二个TCI-state列表。当从Q个TCI-state列表中各取一个TCI-state组成一个TCI-state组时，来自第一个TCI-state列表TCI-state作为该TCI-state组中的第一个TCI-state，来自第二个TCI-state列表TCI-state作为该TCI-state组中的第二个TCI-state，以此类推。
Q的值，N的值和/或第一消息携带TCI-state索引总数(即Q*N)可以是协议规定的，也可以是网络设备指示的，例如通过RRC信令配置或通过MAC CE(例如上述指示TCI-state索引的MAC CE，或其他MAC CE)指示，也可以通过终端上报，例如通过终端能力上报过程进行上报。各个TCI-state列表包含的TCI-state的数量可以是单独规定或单独指示的，即各个TCI-state列表包含的TCI-state的数量可以分别由协议规定的，也可以是网络设备分别指示的，例如通过RRC信令配置或通过MAC CE(例如上述指示TCI-state索引的MAC CE，或其他MAC CE)分别指示各个TCI-state列表包含的TCI-state的数量，也可以通过终端上报，例如通过终端能力上报过程进行上报各个TCI-state列表包含的TCI-state的数量。
又例如，一个第一消息(如MAC CE)中包括Q个比特位图，每个比特位图对应一个TCI-state组。每个比特位图最多可以激活M个TCI-state，即每个比特位图中，比特值为1的比特数量的上限为M。每个比特位图包括的比特数量为L。当从Q个TCI-state列表中各取一个TCI-state组成一个TCI-state组时，来自第一个TCI-state列表TCI-state作为该TCI-state组中的第一个TCI-state，来自第二个TCI-state列表TCI-state作为该TCI-state组中的第二个TCI-state，以此类推。
Q，M和/或L的值可以是协议规定的，也可以是网络设备指示的，例如通过RRC信令配置或通过MAC CE(例如上述指示比特位图的MAC CE，或其他MAC CE)指示，也可以通过终端上报，例如通过终端能力上报过程进行上报。Q个比特位图后中各个比特位 图最多可激活的TCI-state数M，和各个比特位图包括的比特数L，也可以是单独规定或单独指示的，例如分别由协议规定的，或由网络设备分别指示的，例如通过RRC信令配置或通过MAC CE(例如上述指示TCI-state索引的MAC CE，或其他MAC CE)分别指示各个比特位图对应的M和L的值，或通过终端上报，例如通过终端能力上报过程进行上报各个比特位图对应的M和L的值。
上述方法中，Q个TCI-state列表可以由Q个第一消息携带。例如，一个第一消息(如MAC CE)中包括N个TCI-state的索引，对应一个TCI-state列表。Q个第一消息携带的TCI-state对应Q个TCI-state列表。终端设备可以根据发送的第一消息的格式来判断各个第一消息对应的TCI-state属于第几个TCI-state列表。例如Q＝2时，终端设备根据第一消息的格式判断哪个第一消息对应的是第一个TCI-state列表，哪个第一消息对应的是第二个TCI-state列表。例如在第一消息中通过1比特来判断该第一消息对应的是第一个TCI-state列表，还是第二个TCI-state列表。当从Q个TCI-state列表中各取一个TCI-state组成一个TCI-state组时，来自第一个TCI-state列表TCI-state作为该TCI-state组中的第一个TCI-state，来自第二个TCI-state列表TCI-state作为该TCI-state组中的第二个TCI-state，以此类推。
第一消息的数量Q，以及第一消息中包括的TCI-state索引数N的值可以是协议规定的，也可以是网络设备指示的，例如通过RRC信令配置或通过MAC CE(例如上述指示TCI-state索引的MAC CE，或其他MAC CE)指示，也可以通过终端上报，例如通过终端能力上报过程进行上报。
又例如，一个第一消息(如MAC CE)中包括一个比特位图，每个比特位图对应一个TCI-state组。每个比特位图最多可以激活M个TCI-state，即每个比特位图中，比特值为1的比特数量的上限为M。每个比特位图包括的比特数量为L。当从Q个TCI-state列表中各取一个TCI-state组成一个TCI-state组时，来自第一个TCI-state列表TCI-state作为该TCI-state组中的第一个TCI-state，来自第二个TCI-state列表TCI-state作为该TCI-state组中的第二个TCI-state，以此类推。
M和L的值可以是协议规定的，也可以是网络设备指示的，例如通过RRC信令配置或通过MAC CE(例如上述指示TCI-state索引的MAC CE，或其他MAC CE)指示，也可以通过终端上报，例如通过终端能力上报过程进行上报。
可选的，上述方法也可以用于上行传输(例如SRS/PUCCH/PUSCH/PRACH)的发送波束的指示。例如，可以将上述方法中的TCI-state替换为spatial relation或SRS资源。具体的，网络设备可以发送一个第一消息给终端设备，用于激活多组上行发送波束或多组spatial relation或多组SRS资源，每组包括一个或多个发送波束或spatial relation或SRS资源，然后发送第二消息给终端设备，用于指示用于上行传输的一组发送波束或一组spatial relation或一组SRS资源。所述第一消息和第二消息可以是RRC信令，或MAC CE信令，或DCI信令。可选的，上述方法也可以用于激活PDCCH的TCI-state。
上述Q个TCI-state列表包括的TCI-state可以同一小区的TCI-state。上述Q个TCI-state列表包括的TCI-state也可以是Q个不同小区内的TCI-state。该Q个不同小区的TCI-state列表，可以通过Q个不同小区的MAC CE来进行指示。
上述Q个TCI-state列表包括的TCI-state可以同一BWP的TCI-state。上述Q个TCI-state列表包括的TCI-state也可以是Q个不同BWP内的TCI-state。该Q个不同小区的TCI-state 列表，可以通过Q个不同BWP的MAC CE来进行指示。
相应的，终端设备通过第二消息中的TCI字段，可以确定第一TCI-state组，该第一TCI-state组可以包括一个或两个TCI-state。终端设备根据确定的第一TCI-state组中包括的TCI-state进行PDSCH或下行数据的接收。
本申请实施例中，网络设备采用第二消息指示的第一TCI-state组包括的至少两个TCI-state可以同时传输，也可以分时传输。举例来说，如图3所示，一种可能的实现方式中，分时传输方式是在同一时隙的不同符号上，分别采用多个TCI-state来传输同一数据的一个或多个冗余版本RV，例如传输模式TDMSchemeA。图3中以两个TCI-state为例进行说明。图3中，两个TCI-state传输的数据可以是同一数据的相同或不同的冗余版本(Redundant version，RV)，可以提高数据传输的可靠性。上述分时传输方式可以是网络设备配置的，即网络设备通过RRC信令向终端设备配置这种传输方式。
当采用上述分时传输时，一个问题是两个TCI-state所对应的两次传输的时域资源(起始符号S符号数L)如何确定。例如，图3中第一个TCI-state对应的时域起始符号为3，符号数为2，第二个TCI-state对应的时域起始符号为7，符号数为2。一种实现方式中，网络设备可以指示第一次传输(第一个TCI-state对应的传输)的起始符号S和符号数L，和两次传输之间的符号间隔K，即第二次传输的第一个符号，与第一次传输的最后一个符号之间的间隔。这样，终端设备可以根据第一次传输的起始符号和符号数，以及两次传输的符号间隔，确定第二次传输的起始符号。可以规定两次传输采用的符号数是相等的。这样，第二次传输的符号数也能通过第一次传输的符号数来确定。这样，终端设备就可以确定两次传输的时域资源信息了。网络设备需要指示第一次传输的起始符号S，符号数L，以及两次传输的符号间隔K，终端设备就可以确定两次传输的时域资源信息。需要说明的是，网络设备可以不指示S和L的值，而是指示一个参数(如startSymbolAndLength参数或SLIV参数)，终端设备通过该参数可以计算出S和L的值。
由于两次传输是在同一slot内进行的，因此S，L和K的值需要满足一定的约束，保证第二次传输不会超出该时隙的范围。具体的，需要满足以下约束：如果传输采用普通循环冗余前缀(normal cyclic prefix)，即每个时隙有14个正交频分复用(orthogonal frequency division multiplexing，OFDM)符号，那么需要满足S+2L+K≤14。
也可以限定S+2L≤14。也可以限定S+2L+K≤13，或S+2L≤13，或S+2L+K≤15，或S+2L≤15。也可以限定L<＝7，或L<＝(14-K)/2，或
Figure PCTCN2019116823-appb-000001
为向下取整。
如果传输采用扩展循环冗余前缀(Extended cyclic prefix)，即每个时隙有12个OFDM符号，那么需要满足S+2L+K≤12。也可以限定S+2L≤12。也可以限定S+2L+K≤11，或S+2L≤11，或S+2L+K≤13，或S+2L≤13。也可以限定L<＝6，或L<＝(12-K)/2，或
Figure PCTCN2019116823-appb-000002
例如，下表10给出了一种示例。
表10
Figure PCTCN2019116823-appb-000003
上述时域资源确定方法既可以用于下行传输，也可以用于上行传输。上述约束既可以用于下行传输，也可以用于上行传输，在此不再赘述。
当网络设备通过DCI指示两个TCI-state，并且配置终端设备采用频分复用传输模式时(即两个TCI-state用于传输同一数据，且两个TCI-state对应的频域资源是不同的)，网络设备还需要传输一个PTRS(Phase Tracking Reference Signal，相位跟踪参考信号)给终端设备，用于进行时频跟踪。在这种情况下，该PTRS的频域密度K PT-RS可以根据PDSCH传输采用的PRG(Precoding Resource Block Group，预编码资源块组)的粒度来进行确定。例如，当PRG的粒度为2个RB时，PTRS的频域密度为2个RB，当PRG的粒度为4个RB时，PTRS的频域密度为4个RB。
激活的一组TCI-state可以用于同时传输或分时传输(例如在连续多个时隙传输同一数据的相同RV或不同RV)。用于分时连续传输时，需要指示连续传输的次数。可以有两种方法是指连续传输的次数。一种方法是通过RRC信令中的pdsch-AggregationFactor参数来指示传输次数。另一种方法是通过RRC信令中的PDSCH-TimeDomainResourceAllocation参数来进行指示。具体的，TimeDomainResourceAllocation参数中可以包括一个参数，例如URLLCRepNum参数，用于指示连续传输的次数。网络设备可以为终端设备配置多个TimeDomainResourceAllocation参数，然后通过DCI指示其中一个。被指示的TimeDomainResourceAllocation参数中配置的传输次数，即为连续传输的次数。如何通过上述两个参数来确定连续传输的次数，是一个问题。可以采用以下方法中的任意一种。
方法一：
如果配置了pdsch-AggregationFactor参数则采用pdsch-AggregationFactor的值，即pdsch-AggregationFactor的优先级更高；这时，如果DCI指示了两个TCI-state，那么采用这两个TCI-state进行连续传输(例如交替采用两个TCI-state进行连续传输)，传输次数等于pdsch-AggregationFactor参数值。如果DCI指示了一个TCI-state，那么采用这一个TCI-state进行连续传输，传输次数等于pdsch-AggregationFactor参数值。
方法二：
如果DCI指示的TimeDomainResourceAllocation中指示了传输次数，则采用该传输次数，即pdsch-AggregationFactor的优先级更高；这时，如果DCI指示了两个TCI-state，那么采用这两个TCI-state进行连续传输(例如交替采用两个TCI-state进行连续传输)，传输次数等于TimeDomainResourceAllocation中指示的传输次数，如果DCI指示了一个TCI-state，那么采用这一个TCI-state进行连续传输，传输次数等于TimeDomainResourceAllocation中指示的传输次数。
方法三：
如果配置了pdsch-AggregationFactor参数，DCI指示的TimeDomainResourceAllocation中也配置了传输次数，可以根据DCI指示的TCI数量来进行判断：
如果DCI指示了两个TCI-state，则采用TimeDomainResourceAllocation中的传输次数。 采用这两个TCI-state进行连续传输(例如交替采用两个TCI-state进行连续传输)，传输次数等于TimeDomainResourceAllocation中指示的传输次数，
如果DCI指示了一个TCI-state，则采用pdsch-AggregationFactor中的传输次数。采用这一个TCI-state进行连续传输，传输次数等于pdsch-AggregationFactor参数值。
方法四：
当配置了pdsch-AggregationFactor参数，但DCI指示的TimeDomainResourceAllocation中没有指示传输次数时，如果DCI指示了两个TCI-state，那么采用这两个TCI-state进行连续传输(例如交替采用两个TCI-state进行连续传输)，传输次数通过pdsch-AggregationFactor参数值来确定。如果DCI指示了一个TCI-state，则采用这一个TCI-state进行连续传输，传输次数等于pdsch-AggregationFactor参数值。
上述方法也可以用于上行，例如，将pdsch-AggregationFactor替换为pusch-AggregationFactor，TimeDomainResourceAllocation替换为用于上行传输的相关参数(参数名称可以为其他名称)，上述方法可以用于上行。
图2所述的方法是针对通过一个第二消息调度多个波束或者多个TRP的PDSCH传输的场景。即多个波束或者多个TRP的PDSCH传输采用的TCI-state都通过该第二消息中的TCI字段值来确定，终端设备通过一个TCI字段值确定一个TCI-state组。下面考虑另一种场景，即多个波束或者多个TRP传输的PDSCH是独立传输的，分别通过一个第二消息来进行调度。例如，第二消息为DCI时，网络设备发送DCI0调度TRP0的PDSCH0，发送DCI1调度TRP1的PDSCH1。终端设备通过DCI0确定PDSCH0的TCI-state，通过DCI1确定PDSCH1的TCI-state。这时，终端设备需要确定DCI0和DCI1中的TCI字段各自对应的TCI-state。即DCI0中的TCI字段的一个字段值对应一个TCI-state，DCI1中的TCI字段的一个字段值对应另一个TCI-state，因此需要分别激活两个DCI的TCI字段对应的TCI-state。
不同于上述方法，在另一种方法中，网络设备可以通过一个第一消息激活一组TCI-state，该组TCI-state映射到一个TRP对应的DCI的各个TCI字段值。通过多个独立的第一消息，可以激活多组TCI-state，每组TCI-state分别映射到一个TRP对应的DCI的各个TCI字段值。例如，网络设备可以通过MAC CE 1激活K个TCI-state，MAC CE 1激活的K个TCI-state用于TRP0的PDSCH传输，因此这K个TCI-state与TRP0的DCI中TCI字段的K个值一一对应。当终端设备收到TRP0的DCI时，就可以根据该DCI中的TCI字段的值确定对应的TCI-state。相应的，网络设备可以通过MAC CE 2激活K个TCI-state，MAC CE 2激活的K个TCI-state用于TRP1的PDSCH传输，因此这K个TCI-state与TRP1的DCI中TCI字段的K个值一一对应。当终端设备收到TRP1的DCI时，就可以根据该DCI中的TCI字段的值确定对应的TCI-state。
在上述过程中，当终端设备收到一个MAC CE时，需要确定该MAC CE是对应哪个TRP的，即该MAC CE激活的K个TCI-state是与哪个TRP的DCI中的TCI字段对应。一种实现方式中，可以根据调度该MAC CE的DCI来进行判断，即该MAC CE的传输是哪个TRP的DCI调度的，那么该MAC CE激活的TCI-state就是与哪个TRP的DCI中的TCI字段值对应的。例如，如果所述MAC CE是通过TRP0的DCI调度的，那么该MAC CE激活的K个TCI-state是用于TRP0的PDSCH传输的，与TRP0的DCI中的TCI字段对应。 如果所述MAC CE是通过TRP1的DCI调度的，那么该MAC CE激活的K个TCI-state是用于TRP1的PDSCH传输的，与TRP1的DCI中的TCI字段对应。
每个DCI都与一个控制资源集合(control resource set，CORESET)对应，该CORESET包括该DCI的相关参数。每个CORESET可以关联一个第一索引值，例如CORESETPoolIndex，该索引值可以是0或1，可以用于对CORESET进行分组。关联同一个第一索引值的CORESET属于同一组，对应同一个TRP，关联不同第一索引值的CORESET属于不同的组，对应不同的TRP。例如，关联第一索引值为0的CORESET对应的DCI是TRP0的DCI，关联第一索引值为1的CORESET对应的DCI是TRP1的DCI。因此，可以通过DCI对应的CORESET关联的第一索引值进行判断。
因此，当终端设备收到一个用于激活PDSCH传输的TCI-state的MAC CE时，如果调度该MAC CE的DCI对应的CORESET所关联的第一索引值为i(i可以等于0或1)，那么该MAC CE激活的TCI-state就与关联的第一索引值为i的CORESET对应的DCI中的TCI字段值是对应的。即如果网络设备通过一个关联的第一索引值为i的CORESET对应的DCI来调度一个MAC CE，那么该MAC CE激活的K个TCI-state就与关联的第一索引值为i的CORESET对应的DCI中的TCI字段是对应的。当网络设备发送一个关联的第一索引值为i的CORESET对应的DCI给终端设备时，终端设备可以根据该DCI中的TCI字段值与上述激活的K个TCI-state(即通过关联的第一索引值为i的CORESET对应的DCI调度的MAC CE激活的K个TCI-state)的对应关系，确定DCI指示的TCI-state，并根据DCI指示的进行PDSCH的接收。
进一步的，如果存在多个CORESET都关联第一索引值i，那么这些CORESET对应的DCI中的TCI字段，都与上述激活的TCI-state对应。即终端设备无论收到上述哪个CORESET对应的DCI，都要根据该DCI中的TCI字段从上述激活的TCI-state中去确定一个TCI-state。在上述方法中，为多个TRP激活的TCI-state总数不能超过门限S。即关联第一索引值(如CORESETPoolIndex)为0的CORESET对应的DCI的各个TCI字段值对应的不同TCI-state，和关联第一索引值为1的CORESET对应的DCI的各个TCI字段值对应的不同TCI-state的数量之和的上限为S。例如，S＝8，表示为多个TRP激活的不同的TCI-state数量最多为8。或S也可以等于16。还可以限定每个TCI-state列表包括的TCI-state数量上限X，例如限定X＝1，或X＝2，或X＝3，或X＝4，或X＝5，或X＝6，或X＝7。或限定每个TCI-state列表可以包括的不同TCI-state数Y。例如限定X＝1，或X＝2，或X＝3，或X＝4，或X＝5，或X＝6或X＝7。也可以限定第二消息可以指示的TCI-state列表的数量上行Z，例如Z＝2，或Z＝3，或Z＝4。还可以限定同一TCI-state列表中，同一个TCI-state出现的次数上限W，例如X＝1，或X＝2，或X＝3，或X＝4，或X＝5，或X＝6，或X＝7。还可以限定包括单个TCI-state的TCI-state组的数量V，即各TCI字段值对应的TCI-state组中，包括单个TCI-state的TCI-state组的数量不超过V。
S，X，Y，X，W，V的值可以是协议规定的，可以是网络设备配置给终端设备的，也可以是终端设备上报给网络设备的，例如通过能力上报过程上报给网络设备。
网络设备单独为每个波束或者TRP激活多个用于PDSCH或下行数据传输的TCI-state时，网络设备可以向终端设备发送多个激活信令，每个激活信令用于激活一个波束或者TRP的PDSCH传输的K个TCI-state。例如，对于TRP1，网络设备发送激活信令，激活8个 TCI-state。上述方法用于也可以为各个TRP分别激活多个TCI-state。例如，当有两个TRP时，通过两个激活信令分别即为每个TRP激活K个TCI-state，这K个TCI-state与该TRP的DCI中TCI字段的K个值关联。
应理解，本申请实施例中的激活信令可以是MAC CE信令，也可以是其他信令。
应理解，上述第一索引值(如CORESETPoolIndex)是用于对CORESET进行分组的，每组CORESET对应一个TRP，因此可以认为上述第一索引值用于表示TRP。因此，本申请中的TRP可以对应一组CORESET，即一个上述第一索引值对应的所有CORESET。
结合上面的描述，针对每个TRP，上述过程可以通过如图4所示的步骤描述。
步骤401：网络设备向终端设备发送MAC CE。
步骤402：终端设备接收来自网络设备的所述MAC CE。
所述MAC CE用于激活K个TCI-state，K为大于1的整数；所述MAC CE通过DCI 1进行调度。DCI 1对应的CORESET关联的第一索引值(如CORESETPoolIndex 0)为i。所述K个TCI-state映射到K个TCI字段值。
步骤403：网络设备向终端设备发送DCI 2，并发送所述DCI 2调度的PDSCH。
该PDSCH通过DCI 2进行调度。该DCI 2对应的CORESET关联的第一索引值为i。
DCI 2中的TCI字段指示的TCI-state为所述MAC CE激活的K个TCI-state中的任一TCI-state。
步骤404：终端设备接收DCI2，并根据该DCI 2接收所述DCI 2调度的PDSCH。
具体的，终端设备可以确定DCI 2中的TCI字段指示的TCI-state，并根据该TCI-state接收所述DCI 2调度的PDSCH。
需要说明的是，终端设备在接收到DCI1时，确定DCI1关联的控制资源集合的索引值，并确定需要接收的DCI2关联的控制资源集合的索引值，与DCI1关联的控制资源集合的索引相同。
不同于上述方法，在另一种方法中，网络设备可以发送一个激活指令，从而激活多个TRP对应的K个TCI-state。即网络设备发送一个激活信令给终端设备，所述激活信令用于激活K个TCI-state。所述K个TCI-state对应至少两个波束或者TRP。例如所述K个TCI-state中既有用于TRP0传输的TCI-state，又有用于TRP1传输的TCI-state。
网络设备发送一个激活指令时，一种可能的实现方式中，可以约定K个TCI-state中每个TCI-state对应的波束或者TRP。例如，假设所述K个TCI-state对应Q个波束或者Q个TRP，Q小于或等于K，可以将K个TCI-state分为Q个部分，每个部分包括至少一个TCI-state，每个部分与一个波束或者TRP对应。例如，Q等于2，K等于8，可以将K个TCI-state分为两个部分，第一部分，例如包括K个TCI-state中的前四个TCI-state，对应TRP0，即是与关联的索引值为0的CORESET对应的DCI中的TCI字段值对应的；第一部分，例如包括K个TCI-state中的后四个TCI-state，对应TRP1，即是与关联的索引值为1的CORESET对应的DCI中的TCI字段值对应的。
另一种可能的实现方式中，可以按照激活的K个TCI-state的激活顺序或者索引值大小排序的顺序，确定每个TCI-state对应的波束或者TRP。例如，Q等于2，可以将K个TCI-state中，按照激活的顺序排在前面的K/2个TCI-state，与TRP0对应；将K个TCI-state中，按照激活的顺序排在最后面的K/2个TCI-state，与TRP1对应。
再例如，Q等于2，还可以将K个TCI-state中，索引值最小的K/2个TCI-state，与 TRP0对应；将K个TCI-state中，索引值最大的K/2个TCI-state，与TRP1对应。其它情况不再赘述。
通过上面的方法，可以实现在通过一个激活信令激活多个波束或者TRP对应的K个TCI-state时，指示出每个TCI-state对应的波束或者TRP。
本文中描述的各个实施例可以为独立的方案，也可以根据内在逻辑进行组合，这些方案都落入本申请的保护范围中。
可以理解的是，上述各个方法实施例中，由终端设备实现的方法和操作，也可以由可用于终端设备的部件(例如芯片或者电路)实现，由网络设备实现的方法和操作，也可以由可用于网络设备的部件(例如芯片或者电路)实现。
上述本申请提供的实施例中，分别从各个设备之间交互的角度对本申请实施例提供的方法进行了介绍。为了实现上述本申请实施例提供的方法中的各功能，终端设备与网络设备可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和设计约束条件。
本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本申请各个实施例中的各功能模块可以集成在一个处理器中，也可以是单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。
与上述构思相同，如图5所示，本申请实施例还提供一种装置500用于实现上述方法中终端设备或网络设备的功能。例如，该装置可以为软件模块或者芯片系统。本申请实施例中，芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。该装置500可以包括：处理单元501和通信单元502。
本申请实施例中，通信单元也可以称为收发单元，可以包括发送单元和/或接收单元，分别用于执行上文方法实施例中终端设备或网络设备发送和接收的步骤。
以下，结合图5至图6详细说明本申请实施例提供的通信装置。应理解，装置实施例的描述与方法实施例的描述相互对应，因此，未详细描述的内容可以参见上文方法实施例，为了简洁，这里不再赘述。
在一种可能的设计中，该装置500可实现对应于上文方法实施例中的终端设备或者网络设备执行的步骤或者流程，下面分别进行描述。
示例性地，当该装置500实现图2所示的流程中网络设备的功能时：
通信单元502，用于发送第一消息，所述第一消息指示P个传输配置编号状态TCI-state组，所述P个TCI-state组中的每个TCI-state组包括至少一个TCI-state，P为大于1的整数；
处理单元501，用于从所述P个TCI-state组中确定第一TCI-state组；
所述通信单元502，用于向终端设备发送第二消息，所述第二消息中的TCI字段用于指示所述第一TCI-state组；
其中，所述P个TCI-state组与所述第二消息中的TCI字段的P个TCI字段值一一对应；所述第一TCI-state组用于向所述终端设备传输下行数据。
在一种可能的实施方式中，所述第一消息指示P个TCI-state组，包括：
所述第一消息指示Q个TCI-state列表，所述Q个TCI-state列表中每个TCI-state列表 最多包括P个TCI-state，其中Q为大于1的整数；
所述Q个TCI-state列表内的各个TCI-state按预设顺序一一配对，组成所述P个TCI-state组。
在一种可能的实施方式中，所述预设顺序为TCI-state列表中TCI-state的排列顺序，或者所述预设顺序为按TCI-state的索引的大小进行排序的顺序；
当所述预设顺序为TCI-state列表中TCI-state的排列顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，排列顺序相同的TCI状态配对为一个TCI-state组；
当所述预设顺序为TCI-state列表中TCI-state的索引从小到大或从大到小顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，索引大小排序相同的TCI状态配对为一个TCI-state组。
在一种可能的实施方式中如果所述第一TCI-state组包括的多个相同的TCI-state，表示采用所述TCI-state进行下行数据传输；
或者，如果所述第一TCI-state组包括一个TCI-state和一个或多个预设索引，表示采用所述TCI-state进行下行数据传输。
示例性地，当该装置500实现图2所示的流程中终端设备的功能时：
通信单元502，用于接收来自网络设备的第一消息，所述第一消息指示P个传输配置编号状态TCI-state组，所述P个TCI-state组中的每个TCI-state组包括至少一个TCI-state，P为大于1的整数；接收来自网络设备的第二消息；所述第二消息中的TCI字段用于指示所述第一TCI-state组；
处理单元501，用于根据所述第二消息中的TCI字段确定第一TCI-state组；
其中，所述P个TCI-state组与所述第二消息中的TCI字段的P个TCI字段值一一对应；所述第一TCI-state组用于向所述终端设备传输下行数据。
在一种可能的实施方式中，所述第一消息指示P个TCI-state组，包括：
所述第一消息指示Q个TCI-state列表，所述Q个TCI-state列表中每个TCI-state列表最多包括P个TCI-state，其中Q为大于1的整数；
所述Q个TCI-state列表内的各个TCI-state按预设顺序一一配对，组成所述P个TCI-state组。
在一种可能的实施方式中，所述预设顺序为TCI-state列表中TCI-state的排列顺序，或者所述预设顺序为按TCI-state的索引的大小进行排序的顺序；
当所述预设顺序为TCI-state列表中TCI-state的排列顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，排列顺序相同的TCI状态配对为一个TCI-state组；
当所述预设顺序为TCI-state列表中TCI-state的索引从小到大或从大到小顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，索引大小排序相同的TCI状态配对为一个TCI-state组。
在一种可能的实施方式中，如果所述第一TCI-state组包括的多个相同的TCI-state，表示采用所述TCI-state进行下行数据传输；
或者，如果所述第一TCI-state组包括一个TCI-state和一个或多个预设索引，表示采用所述TCI-state进行下行数据传输。
如图6所示为本申请实施例提供的装置600，图6所示的装置可以为图6所示的装置的一种硬件电路的实现方式。该通信装置可适用于图2所示出的流程图中，执行上述方法 实施例中终端设备或者网络设备的功能。为了便于说明，图6仅示出了该通信装置的主要部件。
图6所示的装置600包括至少一个处理器620，用于实现本申请实施例提供的图2中任一方法。
装置600还可以包括至少一个存储器630，用于存储程序指令和/或数据。存储器630和处理器620耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器620可能和存储器630协同操作。处理器620可能执行存储器630中存储的程序指令。所述至少一个存储器中的至少一个可以包括于处理器中。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
应注意，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理电路(digital signal processor，DSP)、专用集成芯片(application specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
装置600还可以包括通信接口610，用于通过传输介质和其它设备进行通信，从而用于装置600中的装置可以和其它设备进行通信。在本申请实施例中，通信接口可以是收发 器、电路、总线、模块或其它类型的通信接口。在本申请实施例中，通信接口为收发器时，收发器可以包括独立的接收器、独立的发射器；也可以集成收发功能的收发器、或者是接口电路。
装置600还可以包括通信线路640。其中，通信接口610、处理器620以及存储器630可以通过通信线路640相互连接；通信线路640可以是外设部件互连标准(peripheral component interconnect，简称PCI)总线或扩展工业标准结构(extended industry standard architecture，简称EISA)总线等。所述通信线路640可以分为地址总线、数据总线、控制总线等。为便于表示，图6中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
示例性地，当该装置600实现图2所示的流程中网络设备的功能时：
通信接口610，用于发送第一消息，所述第一消息指示P个传输配置编号状态TCI-state组，所述P个TCI-state组中的每个TCI-state组包括至少一个TCI-state，P为大于1的整数；
处理器620，用于从所述P个TCI-state组中确定第一TCI-state组；
所述通信接口610，用于向终端设备发送第二消息，所述第二消息中的TCI字段用于指示所述第一TCI-state组；
其中，所述P个TCI-state组与所述第二消息中的TCI字段的P个TCI字段值一一对应；所述第一TCI-state组用于向所述终端设备传输下行数据。
在一种可能的实施方式中，所述第一消息指示P个TCI-state组，包括：
所述第一消息指示Q个TCI-state列表，所述Q个TCI-state列表中每个TCI-state列表最多包括P个TCI-state，其中Q为大于1的整数；
所述Q个TCI-state列表内的各个TCI-state按预设顺序一一配对，组成所述P个TCI-state组。
在一种可能的实施方式中，所述预设顺序为TCI-state列表中TCI-state的排列顺序，或者所述预设顺序为按TCI-state的索引的大小进行排序的顺序；
当所述预设顺序为TCI-state列表中TCI-state的排列顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，排列顺序相同的TCI状态配对为一个TCI-state组；
当所述预设顺序为TCI-state列表中TCI-state的索引从小到大或从大到小顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，索引大小排序相同的TCI状态配对为一个TCI-state组。
在一种可能的实施方式中如果所述第一TCI-state组包括的多个相同的TCI-state，表示采用所述TCI-state进行下行数据传输；
或者，如果所述第一TCI-state组包括一个TCI-state和一个或多个预设索引，表示采用所述TCI-state进行下行数据传输。
示例性地，当该装置600实现图2所示的流程中终端设备的功能时：
通信接口610，用于接收来自网络设备的第一消息，所述第一消息指示P个传输配置编号状态TCI-state组，所述P个TCI-state组中的每个TCI-state组包括至少一个TCI-state，P为大于1的整数；接收来自网络设备的第二消息；所述第二消息中的TCI字段用于指示所述第一TCI-state组；
处理器620，用于根据所述第二消息中的TCI字段确定第一TCI-state组；
其中，所述P个TCI-state组与所述第二消息中的TCI字段的P个TCI字段值一一对 应；所述第一TCI-state组用于向所述终端设备传输下行数据。
在一种可能的实施方式中，所述第一消息指示P个TCI-state组，包括：
所述第一消息指示Q个TCI-state列表，所述Q个TCI-state列表中每个TCI-state列表最多包括P个TCI-state，其中Q为大于1的整数；
所述Q个TCI-state列表内的各个TCI-state按预设顺序一一配对，组成所述P个TCI-state组。
在一种可能的实施方式中，所述预设顺序为TCI-state列表中TCI-state的排列顺序，或者所述预设顺序为按TCI-state的索引的大小进行排序的顺序；
当所述预设顺序为TCI-state列表中TCI-state的排列顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，排列顺序相同的TCI状态配对为一个TCI-state组；
当所述预设顺序为TCI-state列表中TCI-state的索引从小到大或从大到小顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，索引大小排序相同的TCI状态配对为一个TCI-state组。
在一种可能的实施方式中，如果所述第一TCI-state组包括的多个相同的TCI-state，表示采用所述TCI-state进行下行数据传输；
或者，如果所述第一TCI-state组包括一个TCI-state和一个或多个预设索引，表示采用所述TCI-state进行下行数据传输。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (20)

  1. 一种传输配置编号状态指示方法，其特征在于，包括：
    发送第一消息，所述第一消息指示P个传输配置编号状态TCI-state组，所述P个TCI-state组中的每个TCI-state组包括至少一个TCI-state，P为大于1的整数；
    从所述P个TCI-state组中确定第一TCI-state组，并向终端设备发送第二消息，所述第二消息中的TCI字段用于指示所述第一TCI-state组；
    其中，所述P个TCI-state组与所述第二消息中的TCI字段的P个TCI字段值一一对应；所述第一TCI-state组用于向所述终端设备传输下行数据。
  2. 根据权利要求1所述的方法，其特征在于，所述第一消息指示P个TCI-state组，包括：
    所述第一消息指示Q个TCI-state列表，所述Q个TCI-state列表中每个TCI-state列表最多包括P个TCI-state，其中Q为大于1的整数；
    所述Q个TCI-state列表内的各个TCI-state按预设顺序一一配对，组成所述P个TCI-state组。
  3. 根据权利要求2所述的方法，其特征在于，所述预设顺序为TCI-state列表中TCI-state的排列顺序，或者所述预设顺序为按TCI-state的索引的大小进行排序的顺序；
    当所述预设顺序为TCI-state列表中TCI-state的排列顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，排列顺序相同的TCI状态配对为一个TCI-state组；
    当所述预设顺序为TCI-state列表中TCI-state的索引从小到大或从大到小顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，索引大小排序相同的TCI状态配对为一个TCI-state组。
  4. 根据权利要求1至3任一所述的方法，其特征在于，如果所述第一TCI-state组包括的多个相同的TCI-state，表示采用所述TCI-state进行下行数据传输；
    或者，如果所述第一TCI-state组包括一个TCI-state和一个或多个预设索引，表示采用所述TCI-state进行下行数据传输。
  5. 一种传输配置编号状态指示方法，其特征在于，包括：
    接收来自网络设备的第一消息，所述第一消息指示P个传输配置编号状态TCI-state组，所述P个TCI-state组中的每个TCI-state组包括至少一个TCI-state，P为大于1的整数；
    接收来自网络设备的第二消息，根据所述第二消息中的TCI字段确定第一TCI-state组；所述第二消息中的TCI字段用于指示所述第一TCI-state组；
    其中，所述P个TCI-state组与所述第二消息中的TCI字段的P个TCI字段值一一对应；所述第一TCI-state组用于向所述终端设备传输下行数据。
  6. 根据权利要求5所述的方法，其特征在于，所述第一消息指示P个TCI-state组，包括：
    所述第一消息指示Q个TCI-state列表，所述Q个TCI-state列表中每个TCI-state列表最多包括P个TCI-state，其中Q为大于1的整数；
    所述Q个TCI-state列表内的各个TCI-state按预设顺序一一配对，组成所述P个TCI-state组。
  7. 根据权利要求6所述的方法，其特征在于，所述预设顺序为TCI-state列表中TCI-state 的排列顺序，或者所述预设顺序为按TCI-state的索引的大小进行排序的顺序；
    当所述预设顺序为TCI-state列表中TCI-state的排列顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，排列顺序相同的TCI状态配对为一个TCI-state组；
    当所述预设顺序为TCI-state列表中TCI-state的索引从小到大或从大到小顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，索引大小排序相同的TCI状态配对为一个TCI-state组。
  8. 根据权利要求5至7任一所述的方法，其特征在于，如果所述第一TCI-state组包括的多个相同的TCI-state，表示采用所述TCI-state进行下行数据传输；
    或者，如果所述第一TCI-state组包括一个TCI-state和一个或多个预设索引，表示采用所述TCI-state进行下行数据传输。
  9. 一种通信装置，其特征在于，包括：
    通信单元，用于发送第一消息，所述第一消息指示P个传输配置编号状态TCI-state组，所述P个TCI-state组中的每个TCI-state组包括至少一个TCI-state，P为大于1的整数；
    处理单元，用于从所述P个TCI-state组中确定第一TCI-state组；
    所述通信单元，用于向终端设备发送第二消息，所述第二消息中的TCI字段用于指示所述第一TCI-state组；
    其中，所述P个TCI-state组与所述第二消息中的TCI字段的P个TCI字段值一一对应；所述第一TCI-state组用于向所述终端设备传输下行数据。
  10. 根据权利要求9所述的装置，其特征在于，所述第一消息指示P个TCI-state组，包括：
    所述第一消息指示Q个TCI-state列表，所述Q个TCI-state列表中每个TCI-state列表最多包括P个TCI-state，其中Q为大于1的整数；
    所述Q个TCI-state列表内的各个TCI-state按预设顺序一一配对，组成所述P个TCI-state组。
  11. 根据权利要求10所述的装置，其特征在于，所述预设顺序为TCI-state列表中TCI-state的排列顺序，或者所述预设顺序为按TCI-state的索引的大小进行排序的顺序；
    当所述预设顺序为TCI-state列表中TCI-state的排列顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，排列顺序相同的TCI状态配对为一个TCI-state组；
    当所述预设顺序为TCI-state列表中TCI-state的索引从小到大或从大到小顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，索引大小排序相同的TCI状态配对为一个TCI-state组。
  12. 根据权利要求9至11任一所述的装置，其特征在于，如果所述第一TCI-state组包括的多个相同的TCI-state，表示采用所述TCI-state进行下行数据传输；
    或者，如果所述第一TCI-state组包括一个TCI-state和一个或多个预设索引，表示采用所述TCI-state进行下行数据传输。
  13. 一种通信装置，其特征在于，包括：
    通信单元，用于接收来自网络设备的第一消息，所述第一消息指示P个传输配置编号状态TCI-state组，所述P个TCI-state组中的每个TCI-state组包括至少一个TCI-state，P为大于1的整数；接收来自网络设备的第二消息；所述第二消息中的TCI字段用于指示所 述第一TCI-state组；
    处理单元，用于根据所述第二消息中的TCI字段确定第一TCI-state组；
    其中，所述P个TCI-state组与所述第二消息中的TCI字段的P个TCI字段值一一对应；所述第一TCI-state组用于向所述终端设备传输下行数据。
  14. 根据权利要求13所述的装置，其特征在于，所述第一消息指示P个TCI-state组，包括：
    所述第一消息指示Q个TCI-state列表，所述Q个TCI-state列表中每个TCI-state列表最多包括P个TCI-state，其中Q为大于1的整数；
    所述Q个TCI-state列表内的各个TCI-state按预设顺序一一配对，组成所述P个TCI-state组。
  15. 根据权利要求14所述的装置，其特征在于，所述预设顺序为TCI-state列表中TCI-state的排列顺序，或者所述预设顺序为按TCI-state的索引的大小进行排序的顺序；
    当所述预设顺序为TCI-state列表中TCI-state的排列顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，排列顺序相同的TCI状态配对为一个TCI-state组；
    当所述预设顺序为TCI-state列表中TCI-state的索引从小到大或从大到小顺序时，所述Q个TCI-state列表中的每个TCI-state列表中，索引大小排序相同的TCI状态配对为一个TCI-state组。
  16. 根据权利要求13至15任一所述的装置，其特征在于，如果所述第一TCI-state组包括的多个相同的TCI-state，表示采用所述TCI-state进行下行数据传输；
    或者，如果所述第一TCI-state组包括一个TCI-state和一个或多个预设索引，表示采用所述TCI-state进行下行数据传输。
  17. 一种通信装置，其特征在于，包括处理器，收发器，和存储器；
    所述处理器，用于执行所述存储器中存储的计算机程序或指令，当执行所述计算机程序或指令时，使得所述通信装置实现权利要求1至4或5至8中任意一项所述的方法。
  18. 一种通信装置，其特征在于，包括处理器和存储器：
    所述处理器，用于执行所述存储器中存储的计算机程序或指令，当执行所述计算机程序或指令时，如权利要求1至4或5至8中任意一项所述的方法被执行。
  19. 一种可读存储介质，其特征在于，包括计算机程序或指令，当执行所述计算机程序或指令时，如权利要求1至4或5至8中任意一项所述的方法被执行。
  20. 一种芯片，其特征在于，包括处理器，所述处理器与存储器耦合，用于执行所述存储器中存储的计算机程序或指令，当所述处理器执行所述计算机程序或指令时，如权利要求1至4或5至8中任意一项所述的方法被执行。
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