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WO2024026779A1 - 数据传输方法及装置、终端设备、网络设备 - Google Patents

数据传输方法及装置、终端设备、网络设备 Download PDF

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Publication number
WO2024026779A1
WO2024026779A1 PCT/CN2022/110330 CN2022110330W WO2024026779A1 WO 2024026779 A1 WO2024026779 A1 WO 2024026779A1 CN 2022110330 W CN2022110330 W CN 2022110330W WO 2024026779 A1 WO2024026779 A1 WO 2024026779A1
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Prior art keywords
indication information
pdcch
tci
tci state
search space
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Application number
PCT/CN2022/110330
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English (en)
French (fr)
Inventor
史志华
曹建飞
方昀
Original Assignee
Oppo广东移动通信有限公司
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Priority to PCT/CN2022/110330 priority Critical patent/WO2024026779A1/zh
Publication of WO2024026779A1 publication Critical patent/WO2024026779A1/zh

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

Definitions

  • the embodiments of the present application relate to the field of mobile communication technology, and specifically relate to a data transmission method and device, terminal equipment, and network equipment.
  • TRPs transmission/reception points
  • panels multiple antennas
  • beams beams
  • the network device can transmit the corresponding channel-related information through the Transmission Configuration Indicator state (TCI) state. Notify the terminal device.
  • TCI Transmission Configuration Indicator state
  • the current unified TCI state only supports single TRP/panel/beam. There is currently no specific method for configuring the TCI state for repeated transmission of downlink channels in multiple TRP/panel/beam transmission scenarios.
  • Embodiments of the present application provide a data transmission method and device, terminal equipment, and network equipment.
  • the embodiment of this application provides a data transmission method, including:
  • the terminal equipment determines at least one first TCI state for the first physical downlink control channel (Physical Downlink Control Channel, PDCCH), wherein the at least one first TCI state is used to indicate the accuracy of at least one candidate PDCCH among the plurality of candidate PDCCHs.
  • Quasi Co-Location (QCL) information the plurality of candidate PDCCHs are used to transmit/repeatedly transmit the first PDCCH;
  • the terminal equipment receives the first PDCCH based on the at least one first TCI state.
  • the embodiment of this application provides a data transmission method, including:
  • the network device transmits the first PDCCH to the terminal device through at least one candidate PDCCH among a plurality of candidate PDCCHs, the plurality of candidate PDCCHs being used to transmit/repeatedly transmit the first PDCCH, and the QCL information of the at least one candidate PDCCH is determined by At least one first TCI status of the first PDCCH is determined.
  • An embodiment of the present application provides a data transmission device, applied to terminal equipment, including:
  • the determining unit is configured to determine at least one first TCI state for the first PDCCH, wherein the at least one first TCI state is used to indicate QCL information of at least one candidate PDCCH among a plurality of candidate PDCCHs, the plurality of candidates PDCCH is used to transmit/repeatedly transmit the first PDCCH;
  • the receiving unit is configured to receive the first PDCCH based on the at least one first TCI state.
  • An embodiment of the present application provides a data transmission device, applied to network equipment, including:
  • a sending unit configured to transmit the first PDCCH to the terminal device through at least one candidate PDCCH among a plurality of candidate PDCCHs, the plurality of candidate PDCCHs being used to transmit/repeatedly transmit the first PDCCH, and the at least one candidate PDCCH QCL information is determined by at least one first TCI status for the first PDCCH.
  • the communication device provided by the embodiment of the present application may be a terminal device in the above solution or a network device in the above solution.
  • the communication device includes a processor, a memory, and a transceiver.
  • the transceiver is used to implement communication with other devices, the memory is used to store computer programs, and the processor is used to call and run the computer program stored in the memory to perform the above-mentioned data transmission method.
  • the chip provided by the embodiment of the present application is used to implement the above data transmission method.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned data transmission method.
  • the computer-readable storage medium provided by the embodiment of the present application is used to store a computer program.
  • the computer program causes the computer to execute the above-mentioned data transmission method.
  • the computer program product provided by the embodiment of the present application includes computer program instructions, which cause the computer to execute the above-mentioned data transmission method.
  • the computer program provided by the embodiment of the present application when run on a computer, causes the computer to perform the above data transmission method.
  • the terminal device when receiving/detecting the first PDCCH, may first determine at least one candidate among multiple candidate PDCCHs for transmitting the first PDCCH based on at least one first TCI state. QCL information of the PDCCH, and further, the terminal device receives the first PDCCH according to the QCL information of at least one candidate PDCCH. That is to say, the terminal equipment can determine the QCL of at least one candidate PDCCH for transmission/repeated transmission according to one or more first TCI states, so as to obtain the first PDCCH based on the at least one candidate PDCCH, ensuring that the first PDCCH is correct transmission.
  • Figure 1 is a schematic diagram of an application scenario provided by the embodiment of the present application.
  • Figure 2A is a schematic diagram of multi-TRP transmission provided by an embodiment of the present application.
  • Figure 2B is a schematic diagram of multi-beam transmission provided by an embodiment of the present application.
  • Figure 3 is a schematic flow chart 1 of a data transmission method provided by an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of a first MAC CE provided by an embodiment of the present application.
  • Figure 5 is a schematic structural diagram 2 of a first MAC CE provided by an embodiment of the present application.
  • Figure 6 is a schematic flow chart 2 of a data transmission method provided by an embodiment of the present application.
  • Figure 7 is a schematic flow chart 3 of a data transmission method provided by an embodiment of the present application.
  • Figure 8 is a schematic flow chart 4 of a data transmission method provided by an embodiment of the present application.
  • Figure 9 is a schematic flow chart 5 of a data transmission method provided by an embodiment of the present application.
  • Figure 10 is a schematic structural diagram of a data transmission device provided by an embodiment of the present application.
  • Figure 11 is a schematic diagram 2 of the structure of a data transmission device provided by an embodiment of the present application.
  • Figure 12 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 13 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • Figure 14 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • Figure 1 is a schematic diagram of an application scenario according to the embodiment of the present application.
  • the communication system 100 may include a terminal device 110 and a network device 120 .
  • the network device 120 may communicate with the terminal device 110 through the air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120.
  • LTE Long Term Evolution
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • IoT Internet of Things
  • NB-IoT Narrow Band Internet of Things
  • eMTC enhanced Machine-Type Communications
  • 5G communication system also known as New Radio (NR) communication system
  • NR New Radio
  • the network device 120 may be an access network device that communicates with the terminal device 110 .
  • the access network device may provide communication coverage for a specific geographical area and may communicate with terminal devices 110 (eg, UEs) located within the coverage area.
  • terminal devices 110 eg, UEs
  • the network device 120 may be an evolutionary base station (Evolutional Node B, eNB or eNodeB) in a Long Term Evolution (LTE) system, or a next generation radio access network (Next Generation Radio Access Network, NG RAN) equipment, It may be a base station (gNB) in an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device 120 may be a relay station, access point, vehicle-mounted device, or wearable device. Equipment, hubs, switches, bridges, routers, or network equipment in the future evolved Public Land Mobile Network (Public Land Mobile Network, PLMN), etc.
  • Evolutional Node B, eNB or eNodeB in a Long Term Evolution (LTE) system
  • NG RAN Next Generation Radio Access Network
  • gNB base station
  • CRAN Cloud Radio Access Network
  • the terminal device 110 may be any terminal device, including but not limited to terminal devices that are wired or wirelessly connected to the network device 120 or other terminal devices.
  • the terminal device 110 may refer to an access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication Device, user agent, or user device.
  • Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, IoT devices, satellite handheld terminals, Wireless Local Loop (WLL) stations, Personal Digital Assistants (Personal Digital Assistant) , PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolution networks, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistants
  • handheld devices with wireless communication functions computing devices or other processing devices connected to wireless modems
  • vehicle-mounted devices wearable devices
  • terminal devices in 5G networks or terminal devices in future evolution networks etc.
  • the terminal device 110 can be used for device to device (Device to Device, D2D) communication.
  • D2D Device to Device
  • the wireless communication system 100 may also include a core network device 130 that communicates with the network device 120.
  • the core network device 130 may be a 5G core network (5G Core, 5GC) device, such as an access and mobility management function (Access and Mobility).
  • Management Function AMF
  • AUSF Authentication Server Function
  • UPF User Plane Function
  • Session Management Function SMF
  • EPC Evolved Packet Core
  • SMF+PGW-C can simultaneously realize the functions that SMF and PGW-C can realize.
  • the above-mentioned core network equipment may also be called by other names, or a new network entity may be formed by dividing the functions of the core network, which is not limited by the embodiments of this application.
  • Various functional units in the communication system 100 can also establish connections through next generation network (NG) interfaces to achieve communication.
  • NG next generation network
  • the terminal device establishes an air interface connection with the access network device through the NR interface for transmitting user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with the AMF through the NG interface 1 (referred to as N1); access Network equipment, such as the next generation wireless access base station (gNB), can establish user plane data connections with UPF through NG interface 3 (referred to as N3); access network equipment can establish control plane signaling with AMF through NG interface 2 (referred to as N2) connection; UPF can establish a control plane signaling connection with SMF through NG interface 4 (referred to as N4); UPF can exchange user plane data with the data network through NG interface 6 (referred to as N6); AMF can communicate with SMF through NG interface 11 (referred to as N11) SMF establishes a control plane signaling connection; SMF can establish a control plane signaling connection with PCF through NG interface 7 (referred to as N7).
  • N1 AMF through the NG interface 1
  • access Network equipment such as the next generation wireless
  • Figure 1 exemplarily shows one network device, one core network device and two terminal devices.
  • the wireless communication system 100 may include multiple network devices and other numbers may be included within the coverage of each network device. terminal equipment, the embodiment of this application does not limit this.
  • FIG. 1 only illustrates the system to which the present application is applicable in the form of an example.
  • the method shown in the embodiment of the present application can also be applied to other systems.
  • system and “network” are often used interchangeably herein.
  • the term “and/or” in this article is just an association relationship that describes related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and they exist alone. B these three situations.
  • the character "/" in this article generally indicates that the related objects are an "or” relationship.
  • the "instruction” mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship.
  • A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation.
  • the "correspondence" mentioned in the embodiments of this application can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed. , configuration and configured relationship.
  • predefined can refer to what is defined in the protocol.
  • protocol may refer to a standard protocol in the communication field, which may include, for example, LTE protocol, NR protocol, and related protocols applied in future communication systems. This application does not limit this. .
  • the design goals of 5G/NR systems include large-bandwidth communications in high frequency bands (such as frequency bands above 6GHz). When the operating frequency becomes higher, the path loss during transmission will increase, thus affecting the coverage capability of the high-frequency system.
  • an effective technical solution is to improve coverage capabilities based on Multi-beam transmission technology based on Massive Multiple Input Multiple Output (Massive MIMO).
  • a cell uses a wider beam to cover the entire cell. Therefore, at every moment, terminal devices within the cell coverage have the opportunity to obtain the transmission resources allocated by the system.
  • 5G/NR Multi-beam uses different beams to cover the entire cell, that is, each beam covers a smaller range, and the effect of multiple beams covering the entire cell is achieved through time scanning (sweeping).
  • different beams are identified by the different signals they carry.
  • synchronization signal blocks Synchronization Signal/PBCH Block, SSB
  • SSB Synchronization Signal/PBCH Block
  • CSI-RS Channel State Information Reference Signal
  • the Physical Downlink Control Channel (PDCCH) and the Physical Downlink Shared Channel (PDSCH) can be transmitted through different downlink transmission beams.
  • terminal equipment For non-millimeter wave (such as 2G/3G/4G) systems, terminal equipment generally does not have analog beams, so omnidirectional antennas (or nearly omnidirectional antennas) are used to receive signals sent by base stations through different downlink transmit beams.
  • omnidirectional antennas or nearly omnidirectional antennas
  • the terminal equipment may have analog beams.
  • the terminal equipment needs to use the downlink receiving beam to receive the signal sent by the corresponding downlink transmitting beam. Therefore, corresponding beam indication information (beam indication) is needed to assist the terminal device in determining the transmit beam-related information of the network device, or the corresponding receive beam-related information of the terminal device.
  • the beam indication information does not directly indicate the beam itself, but indicates it through Quasi Co-Location (QCL) information between signals.
  • QCL Quasi Co-Location
  • the terminal device may determine to receive the corresponding channel/signal based on the QCL information (which may also be referred to as QCL hypothesis).
  • the network device transmits the downlink control channel or data channel, it will notify the terminal device of the corresponding QCL information through the Transmission Configuration Indicator state (TCI state).
  • TCI state Transmission Configuration Indicator state
  • TRP Multi-transmission/reception point
  • panel multi-antenna
  • multi-beam transmission
  • Multi-TRP transmission means that on the same carrier, multiple TRPs can communicate with terminal devices at the same time. Multi-beam transmission is also on the same carrier, communicating with terminal devices through multiple beams at the same time.
  • multiple TRPs in multi-TRP transmission, multiple TRPs (only TRP1 and TRP2 are shown in Figure 2A) can use independent beams to transmit with the terminal device respectively.
  • the base station in multi-beam transmission, the base station can communicate with the terminal device through different beams.
  • multiple TRPs/panels/beams simultaneously transmit downlink data to terminal devices in the following two ways:
  • Method 1 Single-PDCCH based scheme. Specifically, the terminal equipment only detects one PDCCH, and one DCI in the PDCCH indicates relevant indication information of data transmitted simultaneously on multiple TRPs/panels/beams.
  • TCI-states are used in communication systems to implicitly indicate data transmitted on multiple TRPs/panels/beams.
  • Method 2 Multiple-PDCCH based scheme. Specifically, the terminal equipment receives different PDCCHs from different TRPs/panels/beams, and the DCI detected on each PDCCH indicates a corresponding indication information for data transmission.
  • control resource set (CORESET) corresponding to each DCI may be associated with different CORESET resource pool numbers (CORESET pool index), that is, DCI implicitly supports multiple TRPs through multiple different CORESET pool indexes. /panel/beam transfer.
  • the terminal equipment only needs to detect one PDCCH, so the control channel detection complexity may be lower than the second method.
  • method one requires the rapid exchange of information between different panels/TRP/beams.
  • the terminal equipment needs to detect multiple PDCCHs on the same carrier at the same time. The complexity may increase, but the flexibility and robustness may be improved.
  • scenarios where the above method 2 can be applied may include at least one of the following:
  • Scenario 2 Multiple TRPs belong to the same cell, and the connection (backhaul) between TRPs is non-ideal (that is, TRPs cannot exchange information quickly and can only exchange data relatively slowly).
  • Scenario 3 Multiple TRPs belong to different cells, and the connection (backhaul) between TRPs is ideal.
  • Scenario 4 Multiple TRPs belong to different cells, and the connection (backhaul) between TRPs is non-ideal.
  • the above method 1 is only applicable to ideal backhaul scenarios (such as scenario 1 and scenario 3 above).
  • the time-frequency resources of PDCCH are defined by a search space and the CORESET associated with the search space, where the TCI state during PDCCH transmission is determined by the TCI state of CORESET.
  • High-level signaling defines one or more TCI states for each CORESET.
  • the MAC layer signaling will activate one of the TCI states for the Transmission of PDCCH in all search spaces associated with CORESET. That is to say, in the existing specifications, the PDCCH defined in each search space is transmitted by the only TCI state of the CORESET associated with the search space. Since the link of PDCCH is transmitted only through one TCI state, the link may be blocked, resulting in the PDCCH not being correctly detected. In order to improve the reliability of PDCCH transmission, the transmission of PDCCH through different TRPs was studied in R17.
  • the solution adopted by 3GPP is to associate two search spaces.
  • the two search spaces are each associated with one of the TCI states in CORESET.
  • Each search space contains a set of PDCCH candidates (PDCCH candidates).
  • the candidate PDCCH (or DCI) on the two associated search spaces transmits the same scheduling information, such as scheduling the same uplink transmission or scheduling the same downlink transmission.
  • the transmission schemes described above are all for the same carrier.
  • the terminal device detects multiple DCIs on the same carrier (existing protocols support 2), each DCI can schedule the corresponding PDSCH, and multiple PDSCHs are also on the same carrier.
  • candidate PDCCHs in the two associated search spaces are both transmitted and received on the same carrier.
  • the characteristics of the transmission environment corresponding to the data transmission can be used to improve the reception algorithm.
  • the statistical properties of the channel can be exploited to optimize the design and parameters of the channel estimator.
  • these characteristics corresponding to data transmission are represented by QCL information (QCL-Info).
  • a TCI status may include: TCI status identification (ID), QCL information 1, and QCL information 2.
  • QCL information 2 is optional.
  • a QCL information can include: QCL type configuration and QCL reference signal configuration.
  • the QCL type configuration can be one of QCL type A (typeA), QCL typeB, QCL typeC or QCL typeD.
  • the reference signal configuration can be cell ID, bandwidth Part (Bandwidth Part, BWP) ID and reference signal identification (such as CSI-RS resource ID or SSB index);
  • QCL TypeA is used to configure the following contents ⁇ Doppler shift (Doppler shift), Doppler spread (Doppler spread), average delay (average delay), delay spread (delay spread) ) ⁇
  • QCL typeB is used to configure ⁇ Doppler shift
  • QCL typeC is used to configure ⁇ Doppler shift
  • QCL typeD is used to configure ⁇ Spatial Rx parameter (Spatial Rx parameter) ⁇ .
  • the network device may indicate the corresponding TCI status for the downlink signal (or downlink channel).
  • the terminal device can assume the above target downlink
  • the signal is the same or similar to the large-scale parameters of the resource of SSB 1 or reference CSI-RS 1, which large-scale parameters are determined through the QCL type configuration.
  • the terminal device can adopt and receive SSB 2 or CSI-RS 2 resources have the same spatial receiving parameters (i.e. Spatial Rx parameter) to receive the target downlink signal.
  • the target downlink signal (or target downlink channel) and SSB 2 or CSI-RS 2 resources are sent by the same TRP or the same panel or the same beam on the network device side.
  • the TCI status can be indicated through Radio Resource Control (RRC) signaling or RRC signaling plus Medium Access Control (MAC) signaling.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • the TCI state set is indicated through RRC signaling, and some of the TCI states are activated through MAC layer signaling. Finally, the TCI indication field in the downlink control information (DownlinkControlInformation, DCI) is indicated from the activated TCI state.
  • DCI DownlinkControlInformation
  • unified TCI state has designed two unified TCI state modes.
  • Mode 1 Contains Type 1 TCI state, which can be applied to uplink and downlink channels and signals; this type of TCI state is usually called joint TCI state (joint TCI state)
  • Mode 2 Includes two types of TCI states: downlink TCI state (DL TCI state) and uplink TCI state (UL TCI state). Among them, DL TCI state only applies to downlink channels and signals; UL TCI state only applies to uplink channels and signals. This type of TCI state can be called separate TCI state.
  • the network can configure only one type of TCI state, for example, only downlink TCI state, or only uplink TCI state; the network can also configure both types of TCI state at the same time, for example, the network configures both downlink TCI state and uplink TCI state.
  • downlink channels partial PDCCH, PDSCH
  • signals aperiodic CSI-RS
  • Uplink channels such as physical uplink control channel PUCCH, physical uplink shared channel PUSCH
  • signals channel sounding reference signal SRS
  • UL TCI state or joint TCI state to indicate uplink transmission, such as indicating the spatial filter (spatial domain) corresponding to uplink transmission. filter).
  • Unified TCI state can be dynamically updated and indicated using MAC Control Element (MAC CE) and/or DCI.
  • MAC CE MAC Control Element
  • unified TCI state is applicable to carrier aggregation scenarios, and the TCI state configuration and/or indication on a single component carrier (Component Carrier, CC) can be applicable to multiple different CCs.
  • Component Carrier CC
  • CORESET on each CC can be divided into the following four types:
  • CORESET A It is only associated with the search space exclusive to the terminal device, so it can be considered as a downlink control channel resource exclusive to the terminal device, and must follow the indicated unified TCI state(s).
  • CORESET B It is only associated with the public search space of the community. Whether it can follow the unified TCI state(s) indicated by the network needs to be determined according to the RRC configuration of the network.
  • CORESET C It is associated with the search space exclusive to the terminal device and the public search space of the community. Whether it can follow the unified TCI state(s) indicated by the network needs to be determined according to the RRC configuration of the network.
  • CORESET 0 It is associated with the community's public search space, and can also be associated with the terminal device's exclusive search space. Whether it can follow the unified TCI state(s) indicated by the network needs to be determined according to the RRC configuration of the network.
  • TCI state mentioned in the embodiments of this application includes any TCI state mentioned above if it does not clearly indicate which TCI state it is.
  • TCI state can be joint TCI state, separate TCI state, DL TCI state, UL TCI state, or their combination (that is, it can contain multiple different types of TCI state).
  • the RRC parameter "TCI-State” is used for configuration, it generally refers to DL TCI state and/or joint TCI state. If you use the RRC parameter "DLorJointTCIState” for configuration, it generally refers to DL TCI state and/or joint TCI state. If you use the RRC parameter "UL-TCIState” or “TCI-UL-State” or “UL-TCI-State” for configuration, it generally refers to UL TCI state.
  • the network device instructs the transmission of PDCCH by configuring the control resource set (CORESET) and search space (Search Space).
  • CORESET control resource set
  • Search Space search space
  • CORESET includes multiple physical resource blocks in the frequency domain and 1 to 3 time domain symbols in the time domain.
  • the time domain resources occupied by CORESET are semi-statically configured by high-level parameters.
  • the search space is a set of PDCCH candidates (PDCCH candidates) at one or more aggregation levels.
  • the aggregation level of the PDCCH actually sent by the network device is variable. Since there is no relevant signaling to inform the terminal equipment, the terminal equipment needs to blindly detect the PDCCH at different aggregation levels. Among them, the PDCCH to be blindly detected is called a candidate PDCCH.
  • the terminal equipment will decode the candidate PDCCH in the search space. If the Cyclic Redundancy Check (CRC) check passes, the content of the decoded PDCCH is considered to be valid for the terminal equipment, and the decoded PDCCH will be decoded using the decoded PDCCH. Code the information obtained for subsequent operations.
  • CRC Cyclic Redundancy Check
  • search space can also be called a search space set (Search Space set), and search space and search space set are the same concept.
  • the network equipment within each downlink BWP of each serving cell, can configure up to 10 search spaces for the terminal equipment.
  • the time domain configuration information is configured in the search space to instruct the terminal equipment to detect the time domain of the PDCCH. Location.
  • the network device configures an associated CORESET identifier (CORESET ID) for each search space.
  • the terminal device can obtain the physical resources of the search space in the frequency domain through the CORESET ID.
  • Each search space collection has a unique associated CORESET ID. Different sets of search spaces can be associated with the same CORESET ID.
  • the terminal equipment determines the time-frequency domain position of the candidate PDCCH based on the time domain given by the search space set and the frequency domain of the associated CORESET ID and other parameters in the search space set.
  • the network device When configuring a CORESET, the network device configures one or a group of TCI states for each CORESET.
  • the TCI state is used to indicate the relevant parameters required by the terminal device when demodulating and detecting the candidate PDCCH in the search space associated with the CORESET.
  • the network device When the network device configures a set of TCI states for a CORESET, the network device activates a TCI state for the CORESET through MAC CE signaling to assist the terminal device in demodulating the PDCCH.
  • the network device can also configure a high-level indication for each CORESET to indicate whether it is the same TRP (ie, CORESET pool index, the corresponding name in the RRC parameter is coresetPoolIndex).
  • the value range is 0 and 1.
  • the terminal device can think that this is data from the same TRP.
  • R17's unified TCI state only supports single TRP/panel/beam scenarios.
  • PDCCH repetition in multi-TRP/panel/beam transmission systems how to configure and indicate unified TCI state still lacks complete solutions and specific details.
  • FIG 3 is a schematic flowchart 1 of a data transmission method provided by an embodiment of the present application. As shown in Figure 3, the method includes the following contents.
  • Step 310 The terminal device determines at least one first TCI state for the first PDCCH, where the at least one first TCI state is used to indicate QCL information of at least one candidate PDCCH among multiple candidate PDCCHs (PDCCH candidates).
  • the multiple candidate PDCCHs Used to transmit/repeat the first PDCCH;
  • Step 320 The terminal device receives the first PDCCH based on at least one first TCI state.
  • At least one first TCI state may be an activated or used unified TCI state. At least one first TCI state may be configured by the network device.
  • the terminal equipment may first determine the QCL information of at least one candidate PDCCH among the plurality of candidate PDCCHs used to transmit the first PDCCH according to at least one first TCI state, and then the terminal equipment The first PDCCH is received according to QCL information of at least one candidate PDCCH.
  • the terminal device can receive/detect a candidate PDCCH according to a configured first TCI state to obtain the first PDCCH (that is, no repeated transmission), or , the terminal equipment determines the QCL information of each candidate PDCCH among the plurality of candidate PDCCHs according to a configured first TCI state, and receives/detects the plurality of candidate PDCCHs to obtain the first PDCCH (repeated transmission is still performed).
  • the number of the first TCI states of the terminal device is 1, which of the above two methods is used may be predefined or configured by the network device. This is not the case in the embodiment of the present application. Make restrictions.
  • the terminal device can determine the QCL information of each candidate PDCCH in the multiple candidate PDCCHs based on each configured first TCI state, and receive/detect the multiple candidates.
  • PDCCH gets the first PDCCH.
  • multiple candidate PDCCHs can come from different search spaces, and multiple candidate PDCCHs transmit the same scheduling information, corresponding to PDCCH repeated transmission in a multi-TRP/panel/beam transmission scenario.
  • the terminal equipment can determine the QCL of at least one candidate PDCCH for transmission/repeated transmission according to one or more first TCI states, so as to obtain the first PDCCH based on the at least one candidate PDCCH, ensuring that the first PDCCH is correct. transmission.
  • the terminal device may receive search space association indication information sent by the network device, where the search space association indication information is used to indicate multiple search space associations, where the multiple search spaces are in the same BWP.
  • the multiple candidate PDCCHs mentioned in the embodiments of this application are respectively candidate PDCCHs in multiple search spaces.
  • the reception of the first PDCCH may include multiple candidate PDCCHs in the multiple search spaces mentioned above. That is, multiple candidate PDCCHs may be used to transmit/repeatedly transmit the first PDCCH.
  • the candidate PDCCHs corresponding to the above multiple search spaces transmit the same scheduling information (or transmit the same DCI), for example, multiple candidate PDCCHs schedule the same uplink transmission, or schedule the same downlink transmission.
  • the search space association indication information can be carried through RRC signaling or MAC CE signaling, and this embodiment of the present application does not limit this.
  • the search space association indication information may be carried through the configuration information of any one of the multiple search spaces, and the configuration information may indicate other search spaces associated with the current search space.
  • one of the search space association indication information can be included in the first search space configuration information, and the second search space association indication information can be used to indicate the second search space.
  • Search space optionally, there is another search space association indication information, and the other search space association indication information is included in the second search space configuration information, and the first search space is indicated by the search space association indication information.
  • the search space association indication information is indicated by the information field "searchSpaceLinking" or the information field "searchSpaceLinkingId" in the RRC signaling.
  • the value of the search space association indication information may be a positive integer from 0 to 39 (inclusive), and different values are used to indicate different search spaces.
  • the number of search space association indication information may include multiple search space association indication information, and the plurality of search space association indication information may correspond one-to-one to multiple search spaces configured by the network device.
  • the configuration information of each search space can carry a search space association indication information, and the search space association indication information of mutually related search spaces has the same value.
  • the search space association indication information is indicated by the information field "searchSpaceLinking" or the information field "searchSpaceLinkingId" in the RRC signaling.
  • the value of the search space correlation indication information may be a positive integer from 0 to 39 (including 0 and 39), and the search space correlation indication information of mutually related search spaces has the same value.
  • the above-mentioned multiple search spaces are of the same type.
  • the multiple search spaces are all common search spaces (Common Search Space, CSS), or are all terminal-specific search spaces (UE-specific Search Space, USS).
  • Communication Search Space CSS
  • UE-specific Search Space USS
  • multiple search spaces may have the same DCI format.
  • the DCI formats of multiple search spaces may all be DCI format 0_1, DCI format 0_2, DCI format 1_1, DCI format 1_2, or other formats. This application implements There is no restriction on this.
  • multiple search spaces can satisfy some or all of the following conditions:
  • Condition 1 Any one of the multiple search spaces will not be associated with other search spaces (the association here specifically refers to the association between the above-mentioned multiple search spaces), or the terminal device does not expect the above-mentioned multiple search spaces. Any one of them is associated with other search spaces;
  • Condition 2 If the PDCCH repeated transmission is in a time domain unit (such as a time slot, a half time slot, multiple time domain symbol sets), then the above multiple search spaces have the same period and/or the same offset, or the above Multiple search spaces occupy the same number of time domain symbols (the same duration), or the above multiple search spaces have the same PDCCH detection opportunities in one time domain unit (the same number of Monitoring Occasions within a slot).
  • the network device may set the RRC information field "monitoringSlotPeriodicityAndOffset" in the configuration information of each of the multiple search spaces to have the same value to indicate that the multiple search spaces have the same period or offset.
  • search space search space 0 a search space used to search for system information block 1 searchSpaceSIB1, a search space used to search for other system information searchSpaceOtherSystemInformation, a search used to search for paging messages Space pagingSearchSpace, search space ra-SearchSpace for random access, search space searchSpaceBroadcast for searching broadcast information, search space peiSearchSpace, and search space sdt-SearchSpace.
  • Condition 4 Multiple search spaces are not indicated by the parameter "recoverySearchSpaceId" in RRC signaling.
  • multiple search spaces may correspond to multiple sets of control resources.
  • One search space may uniquely correspond to (or be associated with) one control resource set, and the control resource sets corresponding to (or associated with) different search spaces may be the same or different. This is not limited in the embodiment of the present application.
  • each search space configuration information may indicate identification information of the search space corresponding to (or associated with) it.
  • the control resource set corresponding to each search space can be indicated by the information field "controlResourceSetId" in RRC signaling.
  • the above-mentioned at least one first TCI state is a unified TCI state (unified TCI state), wherein the type of the at least one first TCI state may be a joint TCI state (joint TCI state), or may be It is the downlink TCI state (DL TCI state), and the embodiment of this application does not limit this.
  • At least one first TCI state is used for downlink operation (DL operation)/downlink transmission (DL transmission)/downlink reception (DL reception).
  • DL operation downlink operation
  • DL transmission downlink transmission
  • DL reception downlink reception
  • the type of the above-mentioned at least one first TCI state may be configured by the network device.
  • the network device may send seventh indication information or eighth indication information to the terminal device, and configure the type of at least one first TCI state through the seventh indication information or eighth indication information.
  • the terminal device receives the seventh indication information sent by the network device, the seventh indication information is used to indicate that the type of the unified TCI state is joint TCI state, then at least one first step in step 310 The TCI state is joint TCI state.
  • joint TCI state can be used for uplink operation (UL operation) or uplink transmission (UL transmission), and can also be used for downlink operation/downlink transmission/downlink reception.
  • the seventh indication information is indicated through the RRC IE information field "unifiedTCI-StateType", whose value is "joint”.
  • the seventh indication information is configured for the serving cell.
  • the seventh indication information may be carried in the RRC IE information field "ServingCellConfig".
  • the at least one first TCI state may be a TCI state in the first TCI state group.
  • the first TCI status group may be used for uplink operation or uplink transmission, or may be used for downlink operation/downlink transmission/downlink reception at the same time.
  • the first TCI status group may be configured by the network device through ninth indication information.
  • the ninth indication information may be configured through RRC signaling.
  • the ninth indication information can be configured through the RRC IE information field "PDSCH-Config".
  • the ninth indication information can be indicated through the RRC IE information field "dl-OrJoint-TCIStateList".
  • the eighth indication information is used to indicate that the type of the unified TCI state is the independent TCI state, then in step 310, at least one first The TCI state is DL TCI state.
  • DL TCI state is used for downlink operation/downlink transmission/downlink reception.
  • the eighth indication information is indicated through the RRC IE information field "unifiedTCI-StateType", whose value is "Separate”.
  • the eighth indication information is configured for the serving cell.
  • the eighth indication information may be carried in the RRC IE information field "ServingCellConfig".
  • the at least one first TCI state may be a TCI state in the second TCI state group.
  • the second TCI status group is used for downlink operation/downlink transmission/downlink reception.
  • the second TCI status group may be configured by the network device through the tenth indication information.
  • the tenth indication information may be configured through RRC signaling.
  • the tenth indication information can be configured through the RRC IE information field "PDSCH-Config".
  • the tenth indication information can be indicated through the RRC IE information field "dl-OrJoint-TCIStateList".
  • the network device may also send eleventh indication information to the terminal device.
  • the eleventh indication information is used to configure or indicate the third TCI status group.
  • the third TCI status group is used for the uplink. operation or upstream transmission.
  • the eleventh indication information can be configured through the RRC IE information field "BWP-UplinkDedicated".
  • the eleventh indication information can be indicated through the RRC IE information field "ul-TCI-ToAddModList”.
  • the seventh indication information and the eighth indication information may be indicated by the same RRC parameter, but the corresponding RRC parameter values are different.
  • the terminal equipment may determine at least one first TCI state for the first PDCCH. At least one first TCI state may be used for downlink operation/downlink transmission/downlink reception. It can be understood that at least one first TCI state for the first PDCCH refers to the first TCI state used for the first PDCCH transmission.
  • the terminal equipment may determine to receive (or detect) QCL information of at least one candidate PDCCH of the first PDCCH according to at least one first TCI state.
  • At least one first TCI state in the embodiment of the present application may be determined by the terminal device according to the indication information sent by the network device.
  • the terminal device may receive the second indication information sent by the network device.
  • the second indication information is used to configure multiple available TCI states, and the multiple available TCI states include the above-mentioned at least one first TCI state.
  • the multiple available TCI states configured by the second indication information may be part or all of the TCI states in the TCI state group configured by at least one of the ninth indication information to the eleventh indication information.
  • TCI status may be part of the TCI states or all TCI states in the first TCI state group configured by the ninth indication information.
  • the multiple available TCI states configured by the second indication information It may also be some or all TCI states in the second TCI status group configured in the tenth indication information and the third TCI status group configured in the eleventh indication information.
  • the multiple available TCI states may also include at least one second TCI state.
  • the second TCI state is used for uplink operation or uplink transmission.
  • the second indication information may be carried (or transmitted) through the first MAC CE signaling. It should be understood that using MAC CE signaling has lower latency than RRC signaling, and also has better transmission reliability, making it easier for the network to quickly instruct terminal equipment to perform corresponding operations.
  • the first MAC CE signaling includes at least one of the following:
  • each TCI quantity indication information in the at least one TCI quantity indication information is used to indicate the number of TCI states associated with the TCI quantity indication information;
  • At least one TCI type indication information is used to indicate the types of multiple available TCI states;
  • the DL BWP indication information can be the number or identification (DL BWP ID) of the DL BWP, and the DL BWP indication information can be used to indicate the BWP used by the terminal device for downlink operation/downlink transmission/downlink reception.
  • the first MAC CE can be applied to this DL BWP.
  • the information field (field) length of the DL BWP indication information may be 2 bits (bit).
  • the UL BWP indication information can be the number or identification (DL BWP ID) of the DL BWP.
  • the UL BWP indication information can be used to indicate the BWP used by the terminal device for uplink operation or uplink transmission.
  • the information field (field) length of the UL BWP indication information may be 2 bits.
  • the first MAC CE signaling may also include K TCI quantity indication information, where K is an integer greater than or equal to 1.
  • K is an integer greater than or equal to 1.
  • Each TCI quantity indication information can indicate M TCI states, where M is an integer greater than 1.
  • the value of K is 8 or 16, or other values, which are not limited in this embodiment of the application.
  • the M TCI states may include UL TCI state for uplink operation/uplink transmission, and DL TCI state for downlink operation/downlink transmission/downlink reception.
  • Each TCI quantity indication information can indicate the total quantity of UL TCI state and DL TCI state. In this way, the number of bits can be reduced and the overhead of the first MAC CE signaling can be compressed.
  • the length of each TCI quantity indication information may be 2 bits, 3 bits, or other numbers of bits, and this embodiment of the present application does not limit this.
  • the value of M can be any value from 1 to 4.
  • the number of UL TCI states is less than or equal to 2
  • the number of DL TCI states is less than or equal to 2. Setting the value of M in this way is simple to implement, can obtain most of the performance gains of multiple TRPs, and at the same time improves the flexibility of network configuration and scheduling.
  • each codebook (codepoint) of the information domain where the TCI quantity indication information is located can correspond to 1 or 2 Joint TCI states.
  • the value of M can be any value from 1 to 6.
  • the number of DL TCI states is less than or equal to 4, and the number of UL TCI states is less than or equal to 2. Setting the value of M in this way can support more TRPs for downlink transmission. In some scenarios, the downlink performance can be improved to some extent, providing greater freedom for network optimization.
  • the value of M can be any value from 1 to 8.
  • the number of DL TCI states is less than or equal to 4
  • the number of UL TCI states is less than or equal to 4. Setting the value of M in this way can support more TRPs for downlink and uplink transmission. In some scenarios, the downlink and uplink performance can be improved, providing greater freedom for network optimization.
  • each codebook (codepoint) of the information domain where the TCI quantity indication information is located can correspond to 1, 2, 3 or 4 Joints. TCI state.
  • the first MAC CE signaling may also include at least one TCI type indication information, used to indicate whether the corresponding TCI state is DL/Joint TCI state or UL TCI state.
  • the TCI type indication information is used to indicate whether the TCI state of the same byte (Octet) is DL/Joint TCI state or UL TCI state.
  • the TCI type indication information is used to indicate whether the TCI state of the same byte is the TCI state in the second TCI state group or the TCI state in the third TCI state group.
  • the first MAC CE signaling may include multiple TCI indication fields, used to indicate configuration information of multiple available TCI states.
  • Each TCI indication field can indicate configuration information of a TCI state.
  • the configuration information may include TCI status ID, QCL information 1, and QCL information 2.
  • the first MAC CE signaling may also include one or more byte indication information, where the one or more byte indication information corresponds to the above-mentioned multiple TCI indication fields, where each byte indication information Used to indicate whether the corresponding TCI indication domain exists.
  • C i is the byte indication information, and i is an integer greater than or equal to 0.
  • C i may indicate whether the TCI state included in another byte after the byte to which C i belongs (ie, TCI state ID i,2 in Figure 4 ) exists.
  • the length of the configuration information of the TCI state is 7 bits.
  • the most significant bit (the most significant bit) of the configuration information of the TCI state is a reserved bit, and the remaining 6 bits indicate the UL TCI state.
  • all 7 bits of the TCI state configuration information can be used to indicate UL TCI state, which can indicate more UL TCI states and improve network scheduling flexibility.
  • the first MAC CE signaling may also include serving cell indication information.
  • the serving cell ID may be used to indicate the corresponding serving cell.
  • the length of the serving cell indication information is 5 bits.
  • the first MAC CE signaling in the embodiment of this application applies to the indicated serving cell.
  • the first MAC CE signaling may also include TCI status subset (or DCI codepoint) quantity indication information, the indication value of which is a positive integer between 1 and K.
  • the number of TCI status subsets refers to the number of codepoints in the first information field in DCI corresponding to the TCI status indicated in the first MAC CE signaling.
  • the first information field is the "Transmission" in DCI. configuration indication” information field.
  • the maximum number of TCI states indicated in the first MAC CE signaling (which may also be called activated) may be 32, 48, or 64.
  • the terminal device supports up to 2 TRP transmissions in both uplink and downlink. If the maximum number of TCI states indicated by the first MAC CE signaling is 48, the terminal device supports up to 4 TRP transmissions in the downlink and 2 TRP transmissions in the uplink to improve the downlink transmission performance and the flexibility of network configuration and scheduling. At the same time It also controls the implementation complexity of terminal equipment within a certain range. If the maximum number of TCI states indicated by the first MAC CE signaling is 64, the terminal device supports up to 4 TRP transmissions in the downlink and 4 TRP transmissions in the uplink to improve the uplink and downlink transmission performance, as well as the flexibility of network configuration and scheduling. , the implementation complexity of terminal equipment is high.
  • the maximum number of Joint TCI states indicated by the first MAC CE (which can also be called activated) is 16, or 32.
  • the first MAC CE signaling may include: serving cell ID, DL BWP ID, UL BWP ID, TCI status ID i,j , Bytes indicate information C i , and bits R are reserved. Among them, the value of i ranges from 0 to M-1, and the value of j ranges from 0 to K-1.
  • each TCI state ID i,j can be used to indicate a TCI state in the first TCI state group, i can correspond to the codepoint number of the "Transmission configuration indication" information field in DCI, and TCI state ID i,j indicates The j-th TCI status corresponding to the i-th codepoint in the "Transmission configuration indication" information field in DCI.
  • the value (or indication value) of the "Transmission configuration indication” information field corresponding to TCI status ID 0,1 and TCI status ID 0,2 is 0,
  • the value (or indication value) of the "Transmission configuration indication” information field corresponding to TCI status ID 1,1 and TCI status ID 1,2 is 1, and so on.
  • TCI state ID i,j , j greater than 1 is optional, depending on the indication of C i .
  • C i in Figure 4 can be used to indicate whether the byte of TCI status ID i,2 exists. If C i has a value of 1, the byte containing TCI state ID i,2 exists; if C i has a value of 0, the byte containing TCI state ID i,2 does not exist. Or, if C i has a value of 1, then the byte containing TCI state ID i,2 does not exist; if C i has a value of 0, then the byte containing TCI state ID i,2 exists.
  • R is a reserved bit, and its value can be 0 or other specified values. This embodiment of the present application does not limit this.
  • the above first MAC CE signaling structure is just a representation, and the positions of different information fields can be adjusted. At the same time, some information in the above first MAC CE signaling can be optional, that is to say, the first MAC CE signaling may not include some of the above information.
  • the first MAC CE signaling may include: serving cell ID, DL BWP ID, UL BWP ID, TCI status ID, multiple TCI quantity indication information, TCI type indication information (represented by D/U in Figure 5), and reserved bit R.
  • Each TCI quantity indication information may be indicated by a subset of bits consisting of Pi ,0 and Pi,1 .
  • the value of the bit subgroup composed of Pi ,0 and Pi ,1 indicates that the i-th codepoint in the "Transmission configuration indication" information field of DCI corresponds to M TCI states.
  • the value of M can be any value from 1 to 4.
  • the values of P i,0 and P i,1 are 00, 01, 10, and 11, and the corresponding values of M are 1, 2, 3, and 4 respectively; the values of P i,0 and P i,1 are 00,10. ,01,11 correspond to M values of 1,2,3,4 respectively.
  • Pi ,0 and Pi ,1 may indicate 1 or 2 joint TCI states corresponding to the i-th codepoint.
  • each TCI quantity indication information can indicate the total quantity of UL TCI state and DL TCI state. In this way, the number of bits can be reduced and the overhead of the first MAC CE signaling can be compressed.
  • the value of i can start from 0 (the example in Figure 5) or from 1, which is not limited in the embodiment of the present application.
  • P i,0 and P i,1 may respectively indicate that the i-th codepoint corresponds to M1 DL TCI states and M2 A UL TCI state.
  • Pi ,0 indicates M1 DL TCI states
  • Pi ,1 indicates M2 UL TCI states
  • Pi ,0 indicates M2 UL TCI states
  • Pi ,1 indicates M1 DL TCI states.
  • the values of M1 and M2 can be any value between 1 and 2.
  • MAC CE signaling can be designed more flexibly to facilitate future solution expansion.
  • the TCI type indication information (represented by D/U in Figure 5) is used to indicate whether the TCI state indicated by the TCI state ID in the same byte is DL/joint TCI state or UL TCI state.
  • the value of D/U is 1, indicating that the type of TCI state indicated by the TCI state ID in the same byte is DL/joint TCI state; the value of D/U is 0, indicating that the type of TCI in the same byte is The type of TCI state indicated by the state ID is UL TCI state.
  • the value of D/U is 0, indicating that the type of TCI state indicated by the TCI state ID in the same byte is DL/joint TCI state; the value of D/U is 1, indicating the type of TCI state ID in the same byte.
  • the type of TCI state indicated is UL TCI state.
  • the embodiments of this application do not limit the specific instructions.
  • the TCI state ID indicates a TCI state, which can be a DL TCI state/joint TCI state, or a UL TCI state.
  • a TCI state which can be a DL TCI state/joint TCI state, or a UL TCI state.
  • the length of the TCI state ID information field is 7 bits; if the value of the D/U field is 0.
  • the type of TCI state indicated by the TCI state ID is UL TCI state, then the length of the TCI state ID information field is 7 bits or 6 bits.
  • the length of the TCI state ID information field is 6 bits, the most significant bit of the TCI state ID is a reserved bit, and the remaining 6 bits indicate the UL TCI state.
  • the terminal device may determine multiple available (activated) TCI states indicated by the network device based on the information carried in the above first MAC CE signaling, specifically, at least one TCI state for the first PDCCH transmission.
  • a TCI state may be a TCI state used for downlink operation/transmission/reception among multiple available (activated) TCI states configured in the first MAC CE signaling.
  • the terminal device may also receive first indication information sent by the network device, where the first indication information is used to indicate at least one TCI state among the plurality of available TCI states, specifically, for the first PDCCH
  • the transmitted at least one first TCI state may be a TCI state used for downlink operation/transmission/reception among the at least one TCI state indicated in the first indication information.
  • the first indication information may indicate at least one of the following:
  • DMRS Demodulation Reference Signal
  • PUSCH uplink transmit spatial filter (UL TX spatial filter);
  • Uplink transmit spatial filter for at least part of the SRS.
  • the first indication information and the second indication information may be the same information. That is, the terminal device may determine at least one first TCI state for the first PDCCH transmission only according to the first MAC CE signaling. For example, the first MAC CE only indicates the TCI state corresponding to the first code point (codepoint), and does not indicate the TCI state corresponding to other code points, and the first code point corresponds to TCI state X1, X1 and X2 determine the at least one first TCI state.
  • the first indication information and the second indication information may also be different information. That is to say, the terminal device can determine multiple available (or activated) TCI states according to the first MAC CE signaling.
  • the network device indicates at least one TCI state among the available TCI states through the second indication information, so as to inform the terminal device of at least one TCI state used by it.
  • the terminal equipment may determine at least one first TCI state for the first PDCCH transmission according to the first indication information and the second indication information.
  • the first indication information may be transmitted through RRC signaling or MAC CE signaling (for example, first MAC CE signaling).
  • the first indication information can also be transmitted through DCI.
  • the first indication information can be transmitted through the "Transmission configuration indication" information field in DCI.
  • the first MAC CE indicates that the first code point (codepoint) corresponds to TCI state X1, X2, the second code point (codepoint) corresponds to TCI state X3, and the first indication information indicates the first code point through the DCI corresponding information field, then the terminal The device may determine the at least one first TCI state based on TCI states X1 and X2.
  • the DCI may be DCI format 1_1 and/or DCI format 1_2.
  • DCI format 1_1/DCI format 1_2 can schedule data at the same time or not schedule downlink transmission.
  • the DCI is at least one of DCI format 1_1, DCI format 1_2, DCI format 0_1, and DCI format 0_2.
  • DCI format 1_1/DCI format 1_2 can schedule data at the same time or not schedule downlink transmission (with or without, DL assignment)
  • DCI format 0_1/DCI format 0_2 can schedule data at the same time or not schedule uplink transmission (with or without, UL assignment).
  • the terminal device can make the following assumptions (in other words, DCI format 1_1/DCI format 1_2 meets the following conditions):
  • the Reference Signal Temporary Identifier (CS-RNTI) is used to scramble the DCI CRC;
  • the TCI state X indicated by the first indication information takes effect, that is, the terminal device can determine based on the TCI state Uplink transmit spatial filter, and/or downlink transmit/receive corresponding QCL information.
  • the first PUCCH transmission carries HARQ-ACK information corresponding to the first indication information DCI.
  • one DCI can indicate up to two TCI states for downlink operation/transmission/reception. Assume that the network device previously indicated TCI state A1 and TCI state A2 for downlink transmission. The current DCI indicates If the signal contains TCI state X, and TCI state X and TCI state A1/A2 are different, you need to consider the above process to determine when TCI state For another example, the terminal equipment currently uses 1 or 2 TCI states (denoted as A1, A2) to determine the QCL information corresponding to the downlink transmission. The current DCI indication signal contains TCI state X, and TCI state X and TCI If state A1/A2 are different, you need to consider the above process to determine when TCI state X can be applied.
  • TCI status when comparing the current TCI status indicated by the first indication information with the previously indicated TCI status, priority is given to TCI status in the same direction. For example, if TCI state The received TCI state is different from TCI state X; if TCI state
  • first indication information instructions there are generally multiple first indication information instructions.
  • the "previously indicated” mentioned in the above solution can be understood as being indicated by the previous first indication information, for example, the most recent first indication information.
  • the BeamAppTime is determined based on the capability reported by the terminal device, or the BeamAppTime is determined based on the network configuration. There is no limitation in the embodiments of this application.
  • the above first MAC CE signaling structure is just a representation, and the positions of different information fields can be adjusted. At the same time, some information in the above first MAC CE signaling can be optional, that is to say, the first MAC CE signaling may not include some of the above information.
  • the second indication information sent by the network device may indicate multiple available (activated) TCI states
  • the first indication information may indicate (applied) N TCIs used in the multiple available (activated) TCI states. state.
  • the terminal device may determine N TCI states according to the first indication information and the second indication information.
  • At least part of the N TCI states are used to determine/instruct downlink operation/transmission/reception of corresponding QCL information.
  • the N TCI states may include a first TCI state used for downlink operation/transmission/reception, and/or a second TCI state used for uplink transmission/transmission.
  • the number of first TCI states may be K1
  • the number of second TCI states may be K2.
  • the K1 first TCI states may be used to indicate the QCL information (or QCL hypothesis) of the candidate PDCCH corresponding to at least one search space among the plurality of search spaces.
  • the terminal device may determine the QCL information (or QCL hypothesis) of candidate PDCCHs corresponding to the multiple search spaces used for the first PDCCH transmission according to the K1 first TCI states, or the terminal device may determine the QCL information (or QCL hypothesis) of the candidate PDCCHs according to the K1 first TCI states. Determine the QCL information (or QCL hypothesis) of candidate PDCCH DMRS corresponding to multiple search spaces.
  • determining QCL information for a certain search space can add more flexibility.
  • the same CORESET corresponds to multiple search spaces, and the candidate PDCCHs corresponding to at least part of the search spaces in the multiple search spaces can use different QCL information.
  • the K1 first TCI states include the first TCI state 1 and the first TCI state 2, where the first search space and the second search space are associated, and the first search space and the second search space are used for the first PDCCH repeated transmission.
  • the QCL information of the candidate PDCCH/PDCCH DMRS corresponding to the first search space can be determined according to the first TCI state 1
  • the QCL information of the candidate PDCCH/PDCCH DMRS corresponding to the second search space can be determined according to the first TCI state 2.
  • the K1 first TCI states are used to indicate the QCL information of the candidate PDCCH corresponding to at least one CORESET among multiple CORESETs.
  • the terminal equipment determines the QCL information (or QCL hypothesis) of candidate PDCCHs corresponding to multiple CORESETs based on the K1 first TCI states, or the terminal equipment determines the candidate PDCCH DMRS corresponding to multiple CORESETs based on the K1 first TCI states.
  • QCL information QCL hypothesis
  • the same CORESET corresponds to multiple search spaces, and the PDCCH corresponding to multiple search spaces can use the same QCL information. Determining QCL information for a certain CORESET maintains similar principles to the existing mechanism, which can reduce implementation complexity.
  • the K1 first TCI states include the first TCI state 1 and the first TCI state 2, wherein the first search space and the second search space are used for the first PDCCH repeated transmission, and the first search space is the same as the first TCI state 2.
  • the second search space corresponds to the second CORESET.
  • the QCL information of the candidate PDCCH/PDCCH DMRS corresponding to the first CORESET is determined according to the first TCI state 1
  • the QCL information of the candidate PDCCH/PDCCH DMRS corresponding to the second CORESET is determined according to the first TCI state 2.
  • the transmission method of the first PDCCH is introduced in detail below.
  • the terminal device receives the first PDCCH based on the at least one first TCI state.
  • the terminal device receives the first PDCCH based on the at least one first TCI state.
  • Step 3201 The terminal device receives the first PDCCH through the candidate PDCCH corresponding to the first search space.
  • the QCL information of the candidate PDCCH corresponding to the first search space is determined through the first TCI state.
  • the first search space is one of the plurality of search spaces. any search space.
  • the terminal device may only receive one candidate PDCCH, and determine the QCL information of the candidate PDCCH/PDCCH DMRS according to the single first TCI state. In this way, the processing complexity of the terminal device is reduced and the energy consumption of the terminal device is saved.
  • the first search space is determined according to any of the following:
  • the first search space is the search space identified as the first designated identification among the multiple search spaces
  • the first search space is a search space corresponding to a control resource set identified as a second specified identification in multiple control resource sets; multiple control resource sets correspond to multiple search spaces;
  • the first search space is determined according to the third indication information sent by the network device.
  • the first search space may be determined according to predefined rules or configured by the network.
  • the first designated identifier is the smallest identifier among the identifiers of the multiple search spaces, or the largest identifier among the identifiers of the multiple search spaces; the first specified identifier can also be the second smallest identifier among the identifiers of the multiple search spaces.
  • logo, or the second largest logo the embodiment of the present application does not limit this.
  • the second designated identifier is the smallest identifier among the identifiers of multiple control resource sets, or the largest identifier among the identifiers of multiple control resource sets.
  • the second specified identifier can also be the third identifier among the identifiers of multiple control resource sets.
  • the second smallest logo, or the second largest logo, is not limited in this embodiment of the present application.
  • the first search space may be the search space with the smallest (or largest) identifier among multiple search spaces, or the first search space may be the search corresponding to the control resource set with the smallest (or largest) identifier in multiple control resource sets. space.
  • the first search space may be determined according to the identifier of the search space, or the first search space may be determined according to the identifier of the control resource set, which is not limited in the embodiment of the present application.
  • determining the first search space through predefined rules can effectively reduce the implementation complexity of the terminal device and the network device.
  • the first search space may also be configured by the network device through the third indication information.
  • the third indication information may be carried through RRC signaling or MAC CE signaling. Among them, carrying through RRC signaling can improve transmission reliability, and carrying through MAC CE signaling can improve flexibility. It should be noted that the third indication information may be the same information as the above-mentioned first indication information and/or the second indication information, and the third indication information may also be information different from the first indication information and the second indication information. This application The embodiment does not limit this.
  • the third indication information may be configured for the terminal device, or configured for the serving cell, or configured for the serving cell group (Serving cell group), or configured for the BWP, Either for CORESET configuration, or for search space configuration, or for a group of interrelated search spaces (the group of search spaces here may include multiple search spaces used for PDCCH repeated transmission above), the embodiments of this application are There is no restriction on this.
  • the third indication information can be configured for a list of serving cells (a list of serving cells, this list can be configured by the network device), configured for the serving cell, for The BWP configuration is for CORESET configuration, for search space configuration, or for a group of mutually related search spaces.
  • This embodiment of the present application does not limit this. It should be noted that due to different signaling for transmitting the third indication information, the configured objects may also be different.
  • the third indication information is used to indicate any of the following:
  • search space ID The identification of the first search space.
  • the identification of the control resource set corresponding to the first search space (CORESET ID);
  • the first search space is the search space identified as the first designated identification among the multiple search spaces
  • the first search space is a search space corresponding to the control resource set identified by the second specified identification in the plurality of control resource sets.
  • the network device can directly indicate the first search space through the search space ID of the first search space.
  • the network device may also indicate the first search space through the CORESET ID corresponding to the first search space. If the CORESET ID indicated by the third indication information corresponds to multiple search spaces, the search space with the smallest/largest search space ID will be used as the first search space.
  • the network device may also indicate through the third indication information that the first search space is a specified search space among the plurality of search spaces, or a search space corresponding to a specified control resource set in the control resource set.
  • the third indication information may include multiple indication values, and different indication values may indicate different search spaces; in addition, the network device may also indicate different search spaces by configuring the third indication information or not configuring the third indication information. .
  • the embodiment of this application does not limit the configuration method of the designated search space.
  • the search space used for repeated transmission of the first PDCCH includes search space 1 and search space 2, where search space 1 corresponds to CORESET1 and search space 2 corresponds to CORESET2.
  • the first search space can be determined in the following way:
  • the first search space is the search space with the smallest search space ID (search space ID) among search space 1 and search space 2. If the ID of search space 1 (for simplicity, SS-ID1 is used to characterize the ID of search space 1 below) is smaller than the ID of search space 1 (for simplicity, SS-ID2 is used to characterize the ID of search space 2 below), then the first The search space is search space 1. If SS-ID2 ⁇ SS-ID1, then the first search space is search space 2.
  • the first search space is the search space with the largest search space ID (search space ID) among search space 1 and search space 2. If SS-ID1>SS-ID2, then the first search space is search space 1, and if SS-ID2>SS-ID1, then the first search space is search space 2.
  • the first search space is the search space corresponding to the CORESET with the smallest CORESET ID (CORESET ID) among CORESET1 and CORESET2. If the identity of CORESET1 (for simplicity, C-ID1 is used to represent the identity of CORESET1 below) is smaller than the identity of CORESET2 (for simplicity, C-ID2 is used to represent the identity of CORESET2 below), then the first search space is the search space corresponding to CORESET1 1; If C-ID2 ⁇ C-ID1, then the first search space is the search space 2 corresponding to CORESET2.
  • CORESET ID CORESET ID
  • the first search space is the search space corresponding to the CORESET with the largest CORESET ID (CORESET ID) among CORESET1 and the second CORESET2. If C-ID1>C-ID2, then the first search space is search space 1 corresponding to CORESET1; if C-ID2>C-ID1, then the first search space is search space 2 corresponding to CORESET2.
  • Method A5 The first search space is determined according to the third instruction information sent by the network device.
  • the terminal device determines the first search space according to the method A1.
  • the terminal device determines the first search space according to the method A1.
  • Method A2 determines the first search space.
  • the terminal device determines the first search space according to method A1.
  • the terminal device determines the first search space according to method A2.
  • the terminal device determines the first search space according to method A2; when the network device does not configure or indicates the third indication information, the terminal device determines the first search space according to method A1.
  • signaling overhead can be reduced by configuring or not configuring the third indication information to indicate different first search spaces.
  • the terminal device determines the first search space according to method A3.
  • the terminal device determines the first search space according to method A3.
  • Method A4 determines the first search space.
  • the terminal device determines the first search space according to method A3.
  • the terminal device determines the first search space according to method A4.
  • the terminal device determines the first search space according to method A4; when the network device does not configure or indicates the third indication information, the terminal device determines the first search space according to method A3.
  • the terminal device determines the first search space according to the method A1.
  • the terminal device determines the first search space according to the method A1.
  • Method A3 determines the first search space.
  • the terminal device determines the first search space according to method A1.
  • the terminal device determines the first search space according to method A3.
  • the terminal device determines the first search space according to method A3; when the network device does not configure or indicates the third indication information, the terminal device determines the first search space according to method A1.
  • directly indicating a5 and a6 indicating different first search spaces by configuring or not configuring third indication information can reduce signaling overhead.
  • the terminal device determines the first search space according to method A2, and when the value of the third indication information is a8 (for example, 1 or 0), the terminal device The first search space is determined according to method A4.
  • the terminal device determines the first search space according to method A2.
  • the terminal device determines the first search space according to method A4.
  • the terminal device determines the first search space according to method A4; when the network device does not configure or indicates the third indication information, the terminal device determines the first search space according to method A2.
  • directly indicating a7 and a8 indicating different first search spaces by configuring or not configuring third indication information can reduce signaling overhead.
  • the terminal device receives the first PDCCH based on at least one first TCI state, and may also do so in the following manner. accomplish:
  • Step 3202 The terminal device receives the first PDCCH through candidate PDCCHs corresponding to multiple search spaces, where the QCL information of the candidate PDCCH corresponding to each search space in the multiple search spaces is determined through the first TCI state.
  • the terminal equipment can receive/detect the candidate PDCCH corresponding to each search space in multiple search spaces respectively. And, the terminal equipment determines the QCL information of the candidate PDCCH/PDCCH DMRS in multiple search spaces according to the single first TCI state. In this way, the reliability of PDCCH transmission is improved.
  • whether the terminal device performs the first PDCCH reception/detection in step 3201 or in step 3202 may be predefined or configured by the network device.
  • the number of at least one first TCI state includes one, and the following steps may also be included:
  • the terminal equipment receives the fourth indication information sent by the network equipment.
  • the fourth indication information is used for the terminal equipment to receive the first PDCCH through the candidate PDCCH corresponding to the first search space, or the terminal equipment receives the first PDCCH through the candidate PDCCH corresponding to multiple search spaces.
  • the first search space is any one of multiple search spaces.
  • the fourth indication information is carried through RRC signaling or MAC CE signaling. Carrying through RRC signaling can improve transmission reliability, and carrying through MAC CE signaling can improve flexibility. It should be noted that the fourth indication information may be the same information as at least one of the above-mentioned first indication information, the second indication information, and the third indication information, and the fourth indication information may also be different information from the above three types of information. , the embodiment of the present application does not limit this.
  • the fourth indication information may be configured for the terminal device, or configured for the serving cell, or configured for the serving cell group (Serving cell group), or configured for the BWP configuration, or for CORESET configuration, or for search space configuration, or for a set of interrelated search spaces (the set of search spaces here may include multiple search spaces used for PDCCH repeated transmission above), this application
  • the set of search spaces here may include multiple search spaces used for PDCCH repeated transmission above
  • the fourth indication information can be configured for a list of serving cells (a list of serving cells, this list can be configured by the network device), configured for the serving cell, for BWP configuration, configured for CORESET, configured for a search space, or configured for a set of interrelated search spaces. It should be noted that due to different signaling for transmitting the fourth indication information, the configured objects may also be different.
  • the terminal device receives the first PDCCH through the candidate PDCCH corresponding to the first search space, and when the value of the fourth indication information is the second value Next, the terminal equipment receives the first PDCCH through candidate PDCCHs corresponding to multiple search spaces.
  • the terminal device when the network device configures the fourth indication information, the terminal device receives the first PDCCH through the candidate PDCCH corresponding to the first search space, and when the network device does not configure the fourth indication information, the terminal device uses multiple Candidate PDCCHs corresponding to search spaces respectively receive the first PDCCH;
  • the terminal device When the network device does not configure the fourth indication information, the terminal device receives the first PDCCH through the candidate PDCCH corresponding to the first search space, and when the network device configures the fourth indication information, the terminal device receives the first PDCCH through multiple search spaces respectively.
  • the corresponding candidate PDCCH receives the first PDCCH.
  • the terminal device receives the first TCI state based on at least one first TCI state.
  • PDCCH can be implemented in the following ways:
  • Step 3203 The terminal device receives the first PDCCH through multiple candidate PDCCHs, and the QCL information of the multiple candidate PDCCHs is determined through multiple first TCI states.
  • the terminal device can receive/detect candidate PDCCHs in multiple search spaces, and the terminal device can determine multiple candidates according to the multiple first TCI states configured by the network.
  • QCL information of PDCCH/PDCCH DMRS can be used to determine multiple candidates according to the multiple first TCI states configured by the network.
  • the terminal device may determine the QCL information of each candidate PDCCH/PDCCH DMRS based on the correspondence between multiple candidate PDCCHs and multiple first TCI states.
  • the correspondence between multiple candidate PDCCHs and multiple first TCI states configured by the network device can be determined by any of the following:
  • the terminal device determines the first TCI state corresponding to the candidate PDCCH of each search space in the multiple search spaces according to the size order of the identifiers of the multiple search spaces and the size order of the identifiers of the multiple first TCI states;
  • the terminal equipment determines the first TCI state corresponding to the candidate PDCCH of each search space in the multiple search spaces according to the size order of the identifiers of the multiple search spaces and the positions of the multiple first TCI states in the second indication information;
  • the terminal device determines the first TCI state corresponding to the candidate PDCCH of each control resource set in the multiple control resource sets according to the size order of the identifiers of the multiple control resource sets and the size order of the identifiers of the multiple first TCI states;
  • the terminal device determines the first TCI state corresponding to the candidate PDCCH of each control resource set in the multiple control resource sets according to the size order of the identifiers of the multiple control resource sets and the positions of the multiple first TCI states in the second indication information. ;
  • the terminal equipment determines the correspondence between the plurality of candidate PDCCHs and the plurality of first TCI states according to the fifth indication information sent by the network equipment;
  • the terminal device determines the first TCI states corresponding to the plurality of candidate PDCCHs according to the plurality of sixth indication information sent by the network device, and the plurality of sixth indication information is associated with the plurality of candidate PDCCHs.
  • the terminal device can determine the corresponding relationship between each candidate PDCCH and a plurality of first TCI states configured by the network according to predefined rules.
  • the terminal device may determine the first TCI state corresponding to the candidate PDCCH of each search space in the multiple search spaces according to the size order of the identifiers of the multiple search spaces and the size order of the identifiers of the multiple first TCI states.
  • the search space with the smallest search space ID corresponds to the first TCI state with the smallest identifier
  • the search space with the second smallest search space ID corresponds to the first TCI state with the second smallest identifier
  • the search space ID with the largest corresponds to the first TCI state with the largest identifier.
  • the search space with the largest search space ID corresponds to the first TCI state with the smallest identifier
  • the search space with the second largest search space ID corresponds to the first TCI state with the second smallest identifier
  • the search with the largest search space ID The space corresponds to the first TCI state with the smallest identifier.
  • the terminal device may determine the first PDCCH corresponding to the candidate PDCCH of each search space in the multiple search spaces according to the size order of the identifiers of the multiple search spaces and the positions of the multiple first TCI states in the second indication information.
  • the second indication information can be transmitted through the first MAC CE signaling. Refer to the schematic structural diagram of the first MAC CE shown in Figure 4 or Figure 5. Different TCI states have different positions in the first MAC CE signaling. .
  • the terminal device may determine the search space corresponding to the first TCI state according to the position of the first TCI state configured by the network device in the second indication information and the first MAC CE signaling.
  • the search space ID minimum search space corresponds to the first TCI state with the highest position in the second indication information
  • the search space ID with the second smallest search space corresponds to the first TCI status with the second position in the second indication information.
  • the search space with the largest search space ID corresponds to the first TCI state ranked last in the second indication information.
  • the search space ID with the largest search space corresponds to the first TCI state with the highest position in the second indication information
  • the search space with the second largest search space ID corresponds to the first TCI state with the second position in the second indication information.
  • the search space with the smallest search space ID corresponds to the first TCI state ranked last in the second indication information.
  • the terminal device may determine the first PDCCH corresponding to the candidate PDCCH of each control resource set in the multiple control resource sets according to the size order of the identifiers of the multiple control resource sets and the size order of the identifiers of the multiple first TCI states.
  • TCI status For example, the search space corresponding to the control resource set with the smallest CORESET ID corresponds to the first TCI state with the smallest identifier, and the search space corresponding to the control resource set with the second smallest CORESET ID corresponds to the first TCI state with the second smallest identifier, so that By analogy, the search space corresponding to the control resource set with the largest CORESET ID corresponds to the first TCI state with the largest ID.
  • the search space corresponding to the control resource set with the largest CORESET ID corresponds to the first TCI state with the smallest identifier
  • the search space corresponding to the control resource set with the second largest CORESET ID corresponds to the first TCI state with the second smallest identifier
  • the terminal device determines the candidate PDCCH corresponding to each control resource set in the multiple control resource sets according to the size order of the identifiers of the multiple control resource sets and the positions of the multiple first TCI states in the second indication information.
  • First TCI status For example, the search space corresponding to the control resource set with the smallest CORESET ID corresponds to the first TCI state located first in the second indication information, and the search space corresponding to the control resource set with the second smallest CORESET ID corresponds to the second indication information.
  • the search space corresponding to the control resource set with the largest CORESET ID corresponds to the first TCI state ranked second in the second indication information.
  • the search space corresponding to the control resource set with the largest CORESET ID corresponds to the first TCI state ranked last in the second indication information.
  • the search space corresponding to the largest control resource set of CORESET ID corresponds to the first TCI state with the highest position in the second indication information
  • the search space corresponding to the control resource set with the second largest CORESET ID corresponds to the position arrangement in the second indication information.
  • the search space corresponding to the control resource set with the smallest CORESET ID corresponds to the first TCI state ranked last in the second indication information.
  • the terminal device may also determine the correspondence between the plurality of candidate PDCCHs and the plurality of first TCI states according to the fifth indication information sent by the network device.
  • the fifth indication information can be used to indicate any of the following:
  • the terminal device determines the first TCI state corresponding to the candidate PDCCH of each search space in the multiple search spaces according to the size order of the identifiers of the multiple search spaces and the size order of the identifiers of the multiple first TCI states;
  • the terminal equipment determines the first TCI state corresponding to the candidate PDCCH of each search space in the multiple search spaces according to the size order of the identifiers of the multiple search spaces and the positions of the multiple first TCI states in the second indication information;
  • the terminal device determines the first TCI state corresponding to the candidate PDCCH of each control resource set in the multiple control resource sets according to the size order of the identifiers of the multiple control resource sets and the size order of the identifiers of the multiple first TCI states;
  • the terminal device determines the first TCI state corresponding to the candidate PDCCH of each control resource set in the multiple control resource sets according to the size order of the identifiers of the multiple control resource sets and the positions of the multiple first TCI states in the second indication information. .
  • the fifth indication information may include multiple indication values, and different indication values may indicate different correspondences between the candidate PDCCH and the first TCI state.
  • the network device may also configure the fifth indication information or not configure the fifth indication value. Indication information to indicate the corresponding relationship between different candidate PDCCHs and the first TCI state.
  • the terminal equipment determines the correspondence between the plurality of candidate PDCCHs and the plurality of first TCI states according to the fifth indication information in the same manner as described in the above embodiment. For the sake of brevity, details will not be repeated here.
  • the fifth indication information may be carried through RRC signaling or MAC CE signaling. It should be noted that the fifth indication information is the same indication information as at least one of the above-mentioned first to fourth indication information, and the fifth indication information may also be different from the above-mentioned first to fourth indication information. Instruction information, the embodiment of this application does not limit this.
  • the fifth indication information may be configured for the terminal device, or configured for the serving cell, or configured for the serving cell group (Serving cell group), or configured for the BWP configuration, or for CORESET configuration, or for search space configuration, or for a set of interrelated search spaces (the set of search spaces here may include multiple search spaces used for PDCCH repeated transmission above), this application
  • the set of search spaces here may include multiple search spaces used for PDCCH repeated transmission above
  • the fifth indication information can be configured for a list of serving cells (a list of serving cells, this list can be configured by the network device), configured for the serving cell, for BWP configuration, configured for CORESET, configured for a search space, or configured for a set of interrelated search spaces. It should be noted that due to different signaling for transmitting the fourth indication information, the configured objects may also be different.
  • the network device indicates the correspondence between multiple candidate PDCCHs and multiple first TCI states through a single fifth indication information, which can improve system flexibility and provide greater freedom for optimized network configuration and transmission.
  • the terminal device may also receive a plurality of sixth indication information sent by the network device, wherein the plurality of sixth indication information is associated with a plurality of candidate PDCCHs, and the terminal device may be associated with the sixth indication information according to each candidate PDCCH.
  • the information determines the first TCI state corresponding to the candidate PDCCH.
  • each sixth indication information is carried by the configuration information of the PDCCH search space associated with it, or by the configuration information of the control resource set corresponding to the PDCCH search space associated with it.
  • the above plurality of sixth indication information may be associated with multiple search spaces, and further associated with candidate PDCCHs in multiple search spaces.
  • the sixth indication information may also be associated with multiple control resource sets, and further associated with candidate PDCCHs in multiple control resource sets. That is to say, the network device can configure an independent indication information for each control resource set or search space to indicate the first TCI state corresponding to the candidate PDCCH/PDCCH DMRS of each control resource set or search space. In this way, the network device The unified TCI state corresponding to each control resource set or search space can be controlled more flexibly.
  • each of the plurality of sixth indication information mentioned above is used to indicate any one of the following:
  • the first TCI state corresponding to the candidate PDCCH associated with the sixth indication information is the first TCI state identified as the third designated identifier
  • the first TCI state corresponding to the candidate PDCCH associated with the sixth indication information is the first TCI state located at the specified position in the second indication information;
  • the third specified identifier may be the largest identifier among multiple first TCI state identifiers, or the smallest identifier among multiple first TCI state identifiers.
  • the third specified identifier may also be multiple first TCI identifiers.
  • the second largest or second smallest identifier among the status identifiers is not limited in this embodiment of the present application. That is to say, the sixth indication information may indicate that the first TCI state corresponding to the current candidate PDCCH is the first TCI state with the largest identifier among multiple TCI states, and the sixth indication information may also indicate that the first TCI state corresponding to the current candidate PDCCH is The first TCI state with the smallest identifier among multiple TCI states.
  • the designated position may be the first position in the second indication information, or it may be the last position in the second indication information, and the embodiment of the present application does not limit this. That is to say, the sixth indication information may indicate that the first TCI state corresponding to the current candidate PDCCH is the first TCI state located first in the second indication information, and the sixth indication information may also indicate that the first TCI state corresponding to the current candidate PDCCH is The last first TCI state in the second indication information.
  • the number of TCI status sets includes multiple.
  • Multiple TCI status sets may be configured by the network device, or may be determined based on predefined rules, and the embodiments of the present application do not limit this.
  • the network device may divide the TCI states in the first TCI state group into multiple TCI state sets.
  • the network device may include set indication information in the configuration information of each TCI state, and the set indication information is used to indicate the TCI state set to which each TCI state belongs. It can be understood that the network device may indicate through the sixth indication information that the first TCI state corresponding to the current candidate PDCCH is the first TCI state belonging to the indicated TCI state set among the plurality of first TCI states.
  • the sixth indication information may include multiple indication values, and different indication values may indicate different first TCI states corresponding to the candidate PDCCH associated with the sixth indication information.
  • the network device may also configure the candidate PDCCH by Configure the sixth indication information or not configure the sixth indication information to indicate different first TCI states corresponding to the candidate PDCCH associated with the sixth indication information.
  • the search space used for repeated transmission of the first PDCCH includes search space 1 and search space 2, where search space 1 corresponds to CORESET1 and search space 2 corresponds to CORESET2.
  • the network device is configured with two first TCI states, which are first TCI state 1 and first TCI state 2 respectively.
  • the ID corresponding to the first TCI state 1 is represented by T-ID1
  • the ID corresponding to the first TCI state 2 is represented by T-ID2.
  • the terminal equipment may determine the correspondence between multiple candidate PDCCHs and multiple first TCI states in the following manner:
  • the candidate PDCCH corresponding to the search space with the smallest search space ID corresponds to the first TCI state with the smallest ID.
  • the candidate PDCCH corresponding to the search space with the largest (or second smallest) search space ID corresponds to the first TCI state with the largest ID. . If SS-ID1 ⁇ SS-ID2, T-ID1 ⁇ T-ID2, then the candidate PDCCH corresponding to the search space indicated by SS-ID1 corresponds to the first TCI state corresponding to T-ID1, and the search space indicated by SS-ID2 corresponds to The candidate PDCCH corresponds to the first TCI state corresponding to T-ID2.
  • the candidate PDCCH corresponding to the search space with the largest search space ID corresponds to the first TCI state with the smallest ID.
  • the candidate PDCCH corresponding to the search space with the smallest (or second largest) search space ID corresponds to the first TCI state with the largest ID. . If SS-ID1>SS-ID2, T-ID1 ⁇ T-ID2, then the candidate PDCCH corresponding to the search space indicated by SS-ID1 corresponds to the first TCI state corresponding to T-ID1, and the search space indicated by SS-ID2 corresponds to The candidate PDCCH corresponds to the first TCI state corresponding to T-ID2.
  • the candidate PDCCH corresponding to the control resource set with the smallest CORESET ID corresponds to the first TCI state with the smallest ID.
  • the candidate PDCCH corresponding to the control resource set with the largest (or second smallest) CORESET ID corresponds to the first TCI state with the largest ID. . If C-ID1 ⁇ C-ID2, T-ID1 ⁇ T-ID2, then the candidate PDCCH corresponding to the search space indicated by C-ID1 corresponds to the first TCI state corresponding to T-ID1, and the search space indicated by C-ID2 corresponds to The candidate PDCCH corresponds to the first TCI state corresponding to T-ID2.
  • the candidate PDCCH corresponding to the control resource set with the largest CORESET ID corresponds to the first TCI state with the smallest ID.
  • the candidate PDCCH corresponding to the control resource set with the smallest (or second largest) CORESET ID corresponds to the first TCI state with the largest ID. . If C-ID1>C-ID2, T-ID1 ⁇ T-ID2, then the candidate PDCCH corresponding to the search space indicated by C-ID1 corresponds to the first TCI state corresponding to T-ID1, and the search space indicated by C-ID2 corresponds to The candidate PDCCH corresponds to the first TCI state corresponding to T-ID2.
  • Method B5 the candidate PDCCH corresponding to the control resource set with the smallest CORESET ID corresponds to the first TCI state located first in the second indication information, and the candidate PDCCH corresponding to the control resource set with the largest (or second smallest) CORESET ID corresponds to The second indication information corresponds to the first TCI state located later.
  • Method B6 the candidate PDCCH corresponding to the control resource set with the largest CORESET ID corresponds to the first TCI state located first in the second indication information, and the candidate PDCCH corresponding to the control resource set with the smallest (or second largest) CORESET ID corresponds to The second indication information corresponds to the first TCI state located later.
  • the candidate PDCCH corresponding to the search space with the smallest search space ID corresponds to the first TCI state located first in the second indication information
  • the candidate PDCCH corresponding to the search space with the largest (or second smallest) search space ID corresponds to
  • the second indication information corresponds to the first TCI state located later.
  • the candidate PDCCH corresponding to the search space with the largest search space ID corresponds to the first TCI state located first in the second indication information
  • the candidate PDCCH corresponding to the search space with the smallest (or second largest) search space ID corresponds to
  • the second indication information corresponds to the first TCI state located later.
  • Method B9 The terminal device determines the first TCI state corresponding to each candidate PDCCH according to the fifth indication information sent by the network device.
  • the terminal device determines the first TCI state corresponding to each candidate PDCCH according to the method B1
  • the value of the fifth indication information is b2 (for example, 1 or 0).
  • the terminal equipment determines the first TCI state corresponding to each candidate PDCCH according to method B2.
  • the terminal device determines the first TCI status corresponding to each candidate PDCCH according to method B1.
  • the terminal device determines according to method B2.
  • the terminal device determines the first TCI state corresponding to each candidate PDCCH according to method B2.
  • the network device does not configure or indicate the fifth indication information.
  • the terminal equipment determines the first TCI state corresponding to each candidate PDCCH according to method B1. Compared with the way in which the fifth indication information directly indicates b1 and b2, signaling overhead can be reduced by configuring or not configuring the fifth indication information to indicate the first TCI state corresponding to each candidate PDCCH.
  • the terminal device determines the first TCI state corresponding to each candidate PDCCH according to method B3, and the value of the fifth indication information is b4 (for example, 1 or 0). ), the terminal equipment determines the first TCI state corresponding to each candidate PDCCH according to method B4.
  • the terminal device determines the first TCI status corresponding to each candidate PDCCH according to method B3.
  • the terminal device determines according to method B4.
  • the terminal device determines the first TCI state corresponding to each candidate PDCCH according to method B4.
  • the network device does not configure or indicate the fifth indication information.
  • the terminal equipment determines the first TCI state corresponding to each candidate PDCCH according to method B3. Compared with the way in which the fifth indication information directly indicates b3 and b4, signaling overhead can be reduced by configuring or not configuring the fifth indication information to indicate the first TCI state corresponding to each candidate PDCCH.
  • the terminal device determines the first TCI state corresponding to each candidate PDCCH according to method B1, and the value of the fifth indication information is b5 (for example, 1 or 0). ), the terminal equipment determines the first TCI state corresponding to each candidate PDCCH according to method B3.
  • the terminal device determines the first TCI status corresponding to each candidate PDCCH according to method B1.
  • the terminal device determines according to method B3.
  • the terminal device determines the first TCI state corresponding to each candidate PDCCH according to method B3.
  • the network device does not configure or indicate the fifth indication information.
  • the terminal equipment determines the first TCI state corresponding to each candidate PDCCH according to method B1. Compared with the way in which the fifth indication information directly indicates b5 and b6, signaling overhead can be reduced by configuring or not configuring the fifth indication information to indicate the first TCI state corresponding to each candidate PDCCH.
  • the terminal device determines the first TCI state corresponding to each candidate PDCCH according to method B2
  • the value of the fifth indication information is b8 (for example, 1 or 0 )
  • the terminal equipment determines the first TCI state corresponding to each candidate PDCCH according to method B4.
  • the terminal device determines the first TCI status corresponding to each candidate PDCCH according to method B2.
  • the terminal device determines according to method B4.
  • the terminal device determines the first TCI state corresponding to each candidate PDCCH according to method B4.
  • the network device does not configure or indicate the fifth indication information.
  • the terminal equipment determines the first TCI state corresponding to each candidate PDCCH according to method B2.
  • signaling overhead can be reduced by configuring or not configuring the fifth indication information to indicate the first TCI state corresponding to each candidate PDCCH.
  • the terminal device determines the first TCI state corresponding to each candidate PDCCH according to method B5, and the value of the fifth indication information is b10 (for example, 1 or 0). ), the terminal equipment determines the first TCI state corresponding to each candidate PDCCH according to method B6.
  • the terminal device determines the first TCI status corresponding to each candidate PDCCH according to method B5.
  • the terminal device determines according to method B6.
  • the terminal device determines the first TCI state corresponding to each candidate PDCCH according to method B6.
  • the network device does not configure or indicate the fifth indication information.
  • the terminal equipment determines the first TCI state corresponding to each candidate PDCCH according to method B5. Compared with the way in which the fifth indication information directly indicates b9 and b10, signaling overhead can be reduced by configuring or not configuring the fifth indication information to indicate the first TCI state corresponding to each candidate PDCCH.
  • Method B10 The terminal device determines the first TCI state corresponding to the candidate PDCCH of search space 1 and the search space respectively according to the two sixth indication information (sixth indication information 1 and sixth indication information 2 respectively) sent by the network device.
  • the sixth indication information 1 sent by the network device may be included in the configuration information of the search space 1
  • the sixth indication information 2 may be included in the configuration information of the search space 2.
  • the sixth indication information 1 sent by the network device may be included in the configuration information of the control resource set 1 corresponding to the search space 1
  • the sixth indication information 2 may be included in the configuration information of the control resource set 2 corresponding to the search space 2. middle.
  • the first TCI state corresponding to the candidate PDCCH of the search space 1 is TCI state A.
  • the candidate PDCCH of the search space 1 corresponds to The first TCI state is TCI state B.
  • the network device configures or indicates the sixth indication information 1
  • the first TCI state corresponding to the candidate PDCCH of the search space 1 is TCI state A.
  • the network device does not configure or indicates the sixth indication information 1
  • the first TCI state of the search space 1 The first TCI state corresponding to the candidate PDCCH is TCI state B.
  • TCI state A and TCI state B can be any of the following:
  • TCI state A is the first TCI state with the smallest identifier among the first TCI state 1 and the first TCI state 2
  • TCI state B is the first TCI state with the largest identifier among the first TCI state 1 and the first TCI state 2;
  • TCI state A is the first TCI state with the largest identifier among the first TCI state 1 and the first TCI state 2
  • TCI state B is the first TCI state with the smallest identifier among the first TCI state 1 and the first TCI state 2;
  • TCI state A is the first TCI state in the second indication information among the first TCI1 and the first TCI state 2
  • TCI state B is the first TCI state in the second indication information in the first TCI state 1 and the first TCI state 2.
  • TCI state A is the first TCI state located later in the second indication information among the first TCI1 and the first TCI state 2
  • TCI state B is the second indication information among the first TCI state 1 and the first TCI state 2.
  • TCI state A is the first TCI state among the first TCI1 and the first TCI state 2 that belongs to the first TCI state set
  • TCI state B is the first TCI state among the first TCI1 and the first TCI state 2 that belongs to the second TCI state set.
  • a TCI status is the first TCI status.
  • the first TCI state set and the second TCI state set may be determined according to predefined rules or according to network configuration.
  • the network may divide the TCI states in the first TCI state group into a first TCI state set and a second TCI state set, and may include set indication information in the configuration information of the TCI state, and the set indication information indicates the TCI state. Belongs to the first TCI state set or the second TCI state set.
  • the sixth indication information 2 is similar to the sixth indication information 1 in an indication manner, and will not be described again here for the sake of brevity.
  • the method further includes:
  • Step 300 The terminal device sends the first capability information and/or the second capability information to the network device;
  • the first capability information is used to indicate that the terminal equipment supports multiple unified TCI states for downlink transmission (or downlink operation/downlink reception) at the same time, and/or, the terminal equipment supports one codebook in DCI to indicate multiple TCI states for downlink transmission. Unify the TCI status; the second capability information is used to indicate that the terminal equipment supports repeated transmission of PDCCH, and/or the terminal equipment supports multiple search space associations.
  • the first capability information can indicate that the terminal device supports Z (Z>1) unified TCI states for simultaneous downlink transmission or downlink reception, or that the terminal device supports a codebook of the "Transmission configuration indication" information field in DCI. Activate or indicate Z unified TCI states for downlink transmission or downlink reception.
  • Z can be 2, 4, or other values, which are not limited in the embodiments of this application.
  • the second capability information may indicate repeated transmission of the PDCCH by the terminal equipment, and/or the terminal equipment supports multiple (2 or more) search space associations.
  • the terminal device can send the first capability information and/or the second capability information to the network device before step 310.
  • the network device can provide the terminal with the first capability information and/or the second capability information reported by the terminal device.
  • the device's multiple TRP/panel/beam PDCCH repeated transmission configurations unify the TCI state.
  • the first capability information and/or the second capability information are capabilities for any of the following objects:
  • Terminal equipment carriers, frequency bands, frequency band combinations, frequency band combinations, frequency bands in the frequency band combination, frequency band combinations, and carriers and frequency band ranges of each frequency band in the frequency band combination.
  • the first capability information and/or the second capability information may be reported for frequency bands (bands), that is, different frequency bands may independently report corresponding first capability information and/or second capability information.
  • the terminal device may support the first capability information and/or the second capability information on a certain or certain frequency bands, but may not support the first capability information and/or the second capability information on other frequency bands, and report independently through different frequency bands. This allows terminal equipment to achieve greater freedom, and at the same time allows more terminal equipment to support unified TCI status configuration in PDCCH repeated transmission scenarios of multiple TRPs/panel/beams.
  • the first capability information and/or the second capability information may be reported independently according to band combination.
  • the terminal device may not report the first capability information and/or the second capability information under a certain frequency band combination, but report the first capability information and/or the second capability information under another frequency band combination. It should be understood that independent reporting of different frequency band combinations allows the terminal to achieve greater freedom, and at the same time allows more terminal equipment to support unified TCI status configuration in the PDCCH repeated transmission scenario of multiple TRP/panel/beam.
  • the first capability information and/or the second capability information can be independently reported per band per band combination (per band per band combination), that is, frequency bands in different band combinations Can report independently.
  • the terminal device may not support the first capability information and/or the second capability information under a certain CA, but some bands report the first capability information and/or the second capability information under another CA combination. It should be understood that independent reporting of different frequency band combinations allows the terminal to achieve greater freedom, and at the same time allows more terminal equipment to support unified TCI status configuration in the PDCCH repeated transmission scenario of multiple TRP/panel/beam.
  • the first capability information and/or the second capability information may be independently reported according to each carrier in each frequency band in the band combination. That is to say, different frequency bands in different frequency band combinations may Carrier CC (per CC per band per band combination, or FSPC) can be reported independently. It should be understood that different frequency band combinations are reported independently, and different carriers on a band can also be reported independently, which allows terminal equipment to have greater freedom and allows more terminal equipment to support PDCCH with multiple TRPs/panel/beams. Unified TCI status configuration in repeated transmission scenarios.
  • the first capability information and/or the second capability information can be reported according to frequency range (Frequency range), that is to say, different FRs (such as low frequency FR1 and high frequency FR2) can be reported independently.
  • frequency range Frequency range
  • different FRs such as low frequency FR1 and high frequency FR2
  • independent reporting of different FRs allows the terminal to achieve greater freedom, and at the same time allows more terminal equipment to support unified TCI status configuration in the PDCCH repeated transmission scenario of multiple TRPs/panel/beams.
  • the first capability information and/or the second capability information may be reported for the terminal device. That is to say, if the UE reports the first capability information and/or the second capability information, it indicates that the terminal device operates on each frequency band. All can support the first capability information and/or the second capability information, which can reduce the signaling overhead of terminal capability reporting.
  • the first capability information and the second capability information can be reported corresponding to different objects, for example, one is for band and the other is for per CC per band per band combination. Since uplink and downlink have different capability requirements for terminal equipment, using different options for uplink and downlink capabilities can be more conducive to terminal equipment implementation.
  • the first capability information and/or the second capability information may be transmitted through RRC signaling or MAC CE signaling.
  • the first capability information and the second capability information may be the same capability information, transmitted through one signaling, or they may be different information, transmitted through different signaling, and the embodiments of this application do not limit this.
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its functions and internal logic, and should not be used in this application.
  • the implementation of the examples does not constitute any limitations.
  • the terms “downlink”, “uplink” and “sidelink” are used to indicate the transmission direction of signals or data, where “downlink” is used to indicate that the transmission direction of signals or data is from the station.
  • uplink is used to indicate that the transmission direction of the signal or data is the second direction from the user equipment of the cell to the site
  • sidelink is used to indicate that the transmission direction of the signal or data is A third direction sent from User Device 1 to User Device 2.
  • downlink signal means that the transmission direction of the signal is the first direction.
  • the term “and/or” is only an association relationship describing associated objects, indicating that three relationships can exist. Specifically, A and/or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.
  • Figure 10 is a schematic structural diagram of a data transmission device provided by an embodiment of the present application. It is applied to terminal equipment. As shown in Figure 10, the data transmission device includes:
  • the determining unit 1001 is configured to determine at least one first TCI state for the first PDCCH, wherein the at least one first TCI state is used to indicate QCL information of at least one candidate PDCCH among a plurality of candidate PDCCHs, the plurality of The candidate PDCCH is used to transmit/repeat the first PDCCH;
  • the receiving unit 1002 is configured to receive the first PDCCH based on the at least one first TCI state.
  • the receiving unit 1002 is also configured to receive first indication information sent by the network device; the first indication information is used to indicate at least one TCI state among multiple available TCI states, and the at least one TCI state includes at least a first TCI state. A TCI status.
  • the receiving unit 1002 is also configured to receive second indication information sent by the network device; the second indication information is used to configure multiple available TCI states, and the multiple available TCI states include all at least one first TCI state.
  • the plurality of candidate PDCCHs are candidate PDCCHs in multiple search spaces respectively, and there is an associated relationship between the multiple search spaces.
  • the multiple search spaces correspond to multiple control resource sets.
  • the at least one first TCI state is used to indicate QCL information of candidate PDCCH corresponding to at least one search space in the plurality of search spaces.
  • the at least one first TCI state is used to indicate the QCL information of the candidate PDCCH corresponding to at least one control resource set in the plurality of control resource sets.
  • the number of the at least one first TCI state includes one, and the receiving unit 1002 is further configured to receive the first PDCCH through a candidate PDCCH corresponding to a first search space, and the first search space corresponds to The QCL information of the candidate PDCCH is determined by the first TCI state, and the first search space is any search space among the plurality of search spaces.
  • the first search space is determined according to any of the following:
  • the first search space is the search space identified as the first designated identification among the plurality of search spaces
  • the first search space is a search space corresponding to a control resource set identified as a second specified identification in a plurality of control resource sets; the plurality of control resource sets correspond to the plurality of search spaces;
  • the first search space is determined according to the third indication information sent by the network device.
  • the third indication information is used to indicate any of the following:
  • the first search space is a search space identified as a first specified identification among the plurality of search spaces
  • the first search space is a search space corresponding to the control resource set identified as the second designated identification in the plurality of control resource sets.
  • the first specified identifier is the smallest identifier among the identifiers of multiple search spaces, or the largest identifier among the identifiers of multiple search spaces;
  • the second specified identifier is the smallest identifier among the identifiers of multiple control resource sets, Or the largest identifier among the identifiers of multiple control resource sets.
  • the third indication information is carried through RRC signaling or MAC CE signaling.
  • the number of at least one first TCI state includes one, and the receiving unit 1002 is further configured to receive the first PDCCH through candidate PDCCHs respectively corresponding to a plurality of search spaces, and the candidates corresponding to each search space in the plurality of search spaces.
  • the QCL information of the PDCCH is determined by the first TCI state.
  • the number of at least one first TCI state includes one.
  • the receiving unit 1002 is also configured to receive fourth indication information sent by the network device.
  • the fourth indication information is used by the terminal device to select the candidate PDCCH corresponding to the first search space.
  • the first PDCCH is received, or the terminal device receives the first PDCCH through candidate PDCCHs respectively corresponding to multiple search spaces; the first search space is any one of the multiple search spaces.
  • the receiving unit 1002 is also configured to be any one of the following:
  • the first PDCCH is received through the candidate PDCCH corresponding to the first search space, and the QCL information of the candidate PDCCH corresponding to the first search space is received through the The first TCI status is determined;
  • the first PDCCH is received through the candidate PDCCH corresponding to the plurality of search spaces, and the candidate PDCCH corresponding to each search space in the plurality of search spaces is received.
  • the QCL information of the candidate PDCCH is determined by the first TCI state;
  • the first PDCCH is received through the candidate PDCCH corresponding to the first search space, and when the network device does not configure the fourth indication information, The terminal equipment receives the first PDCCH through candidate PDCCHs respectively corresponding to the plurality of search spaces;
  • the network device When the network device does not configure the fourth indication information, receive the first PDCCH through the candidate PDCCH corresponding to the first search space, and when the network device configures the fourth indication information, The terminal equipment receives the first PDCCH through the candidate PDCCHs respectively corresponding to the multiple search spaces.
  • the fourth indication information is carried through RRC signaling or MAC CE signaling.
  • the number of at least one first TCI state includes multiple, the receiving unit 1002 is further configured to receive the first PDCCH through multiple candidate PDCCHs, and the QCL information of the multiple candidate PDCCHs is determined through the multiple first TCI states.
  • the determination unit 1001 can also be configured as any of the following:
  • the size order of the identifiers of the multiple search spaces and the size order of the identifiers of the multiple first TCI states determine the first TCI state corresponding to the candidate PDCCH of each search space in the multiple search spaces;
  • the first TCI corresponding to the candidate PDCCH of each control resource set in the multiple control resource sets is determined according to the size order of the identifiers of the multiple control resource sets and the size order of the identifiers of the multiple first TCI states. state;
  • the candidate PDCCH for each control resource set in the multiple control resource sets determines the candidate PDCCH for each control resource set in the multiple control resource sets.
  • the plurality of sixth indication information is associated with the plurality of candidate PDCCHs, and the first TCI states corresponding to the plurality of candidate PDCCHs are respectively determined.
  • the fifth indication information is used to indicate any of the following:
  • the terminal device determines the first TCI corresponding to the candidate PDCCH of each search space in the multiple search spaces according to the size order of the identifiers of the multiple search spaces and the size order of the identifiers of the multiple first TCI states. state;
  • the terminal equipment determines the candidate PDCCH for each search space in the multiple search spaces according to the order of size of the identifiers of the multiple search spaces and the positions of the multiple first TCI states in the second indication information.
  • the terminal device determines the third PDCCH corresponding to the candidate PDCCH of each control resource set in the multiple control resource sets according to the size order of the identifiers of the multiple control resource sets and the size order of the identifiers of the multiple first TCI states. a TCI status;
  • the terminal device determines the first TCI state corresponding to the candidate PDCCH of each control resource set in the multiple control resource sets according to the size order of the identifiers of the multiple control resource sets and the positions of the multiple first TCI states in the second indication information. .
  • the fifth indication information is carried through RRC signaling or MAC CE signaling.
  • each of the plurality of sixth indication information is used to indicate any one of the following:
  • the first TCI state corresponding to the candidate PDCCH associated with the sixth indication information is the first TCI state identified as the third designated identifier
  • the first TCI state corresponding to the candidate PDCCH associated with the sixth indication information is the first TCI state located at the specified position in the second indication information;
  • the third specified identifier is the largest identifier among the identifiers of the multiple first TCI states, or the smallest identifier among the identifiers of the multiple first TCI states; the specified position is the identifier of the multiple first TCI states in the second indication. The earliest position among the positions of the information, or the last position among the positions of the second indication information among the multiple first TCI states.
  • each of the sixth indication information is carried through the configuration information of the PDCCH search space associated with it, or through the configuration information of the control resource set corresponding to the PDCCH search space associated with it.
  • the first indication information is carried through any one of the following: RRC signaling, MAC CE signaling, and DCI.
  • the second indication information is carried through first MAC CE signaling.
  • the first MAC CE signaling includes at least one of the following:
  • each TCI quantity indication information in the at least one TCI quantity indication information is used to indicate the number of TCI states associated with the TCI quantity indication information;
  • At least one TCI type indication information is used to indicate the types of the multiple available TCI states;
  • the receiving unit 1002 is also configured to receive the seventh indication information sent by the network device, the seventh indication information is used to indicate that the type of the unified TCI state is the joint TCI state, and the at least one first TCI state is the joint TCI state; or , receiving eighth indication information sent by the network device, where the eighth indication information is used to indicate that the type of the unified TCI state is the independent TCI state, and the at least one first TCI state is the downlink TCI state.
  • the data transmission device further includes a sending unit configured to send first capability information and/or second capability information to the network device; the first capability information is used to indicate that the terminal device supports multiple unified TCI states. It is used for downlink transmission at the same time, and/or, the terminal equipment supports one codebook in DCI to indicate multiple unified TCI states for downlink transmission; the second capability information is used to indicate that the terminal equipment supports repeated transmission of PDCCH, and/or Or, the terminal device supports multiple search space associations.
  • a sending unit configured to send first capability information and/or second capability information to the network device; the first capability information is used to indicate that the terminal device supports multiple unified TCI states. It is used for downlink transmission at the same time, and/or, the terminal equipment supports one codebook in DCI to indicate multiple unified TCI states for downlink transmission; the second capability information is used to indicate that the terminal equipment supports repeated transmission of PDCCH, and/or Or, the terminal device supports multiple search space associations.
  • the first capability information and/or the second capability information are capabilities for any of the following objects: terminal equipment, carriers, frequency bands, frequency band combinations, frequency band combinations, and frequency bands in the frequency band combination, frequency band combinations, and the frequency band combinations.
  • Figure 11 is a schematic diagram 2 of the structure of a data transmission device provided by an embodiment of the present application. It is applied to network equipment. As shown in Figure 11, the data transmission device includes:
  • the sending unit 1101 is configured to transmit the first PDCCH to the terminal device through at least one candidate PDCCH among a plurality of candidate PDCCHs, the plurality of candidate PDCCHs being used to transmit/repeatedly transmit the first PDCCH, and the at least one candidate PDCCH
  • the QCL information is determined by at least one first TCI status for the first PDCCH.
  • the sending unit 1101 is also configured to send first indication information to the terminal device.
  • the first indication information is used to indicate at least one TCI state among multiple available TCI states, and the at least one TCI state includes the information for the first PDCCH. of at least one first TCI state.
  • the sending unit 1101 is also configured to send second indication information to the terminal device; the second indication information is used to configure multiple available TCI states, and the multiple available TCI states include the At least one first TCI state.
  • the plurality of candidate PDCCHs are respectively candidate PDCCHs in multiple search spaces, and there is an association relationship between the multiple search spaces.
  • the multiple search spaces correspond to multiple control resource sets.
  • the at least one first TCI state is used to indicate QCL information of candidate PDCCH corresponding to at least one search space in the plurality of search spaces.
  • the at least one first TCI state is used to indicate the QCL information of the candidate PDCCH corresponding to at least one control resource set in the plurality of control resource sets.
  • the number of at least one first TCI state includes one.
  • the sending unit 1101 is further configured to send the first PDCCH through a candidate PDCCH corresponding to the first search space, and the QCL information of the candidate PDCCH corresponding to the first search space. It is determined by the first TCI state that the first search space is any search space among the plurality of search spaces.
  • the first search space is determined according to any of the following:
  • the first search space is a search space identified as a first specified identification among the plurality of search spaces
  • the first search space is a search space corresponding to the control resource set identified as the second designated identification in the plurality of control resource sets.
  • the sending unit 1101 is also configured to send third indication information to the terminal device, where the third indication information is used to indicate any of the following:
  • the first search space is a search space identified as a first specified identification among the plurality of search spaces
  • the first search space is a search space corresponding to the control resource set identified as the second designated identification in the plurality of control resource sets.
  • the first designated identifier is the smallest identifier among the identifiers of multiple search spaces, or the largest identifier among the identifiers of multiple search spaces;
  • the second specified identifier is the smallest identifier among the identifiers of multiple control resource sets, or The largest ID among the IDs of multiple control resource sets.
  • the third indication information is carried through RRC signaling or MAC CE signaling.
  • the number of at least one first TCI state includes one, and the sending unit 1101 is further configured to repeatedly send the first PDCCH through candidate PDCCHs corresponding to multiple search spaces, and each search space corresponding to the multiple search spaces.
  • the QCL information of the candidate PDCCH is determined by the first TCI state.
  • the number of the at least one first TCI state includes one.
  • the sending unit 1101 is also configured to send fourth indication information to the terminal device.
  • the fourth indication information is used by the terminal device to select the candidate corresponding to the first search space.
  • the PDCCH receives the first PDCCH, or the terminal device receives the first PDCCH through candidate PDCCHs respectively corresponding to multiple search spaces; wherein the first search space is any one of the multiple search spaces.
  • the terminal device when the value of the fourth indication information is the first value, the terminal device is instructed to receive the first PDCCH through the candidate PDCCH corresponding to the first search space, and the QCL information of the candidate PDCCH corresponding to the first search space is passed through the first search space. TCI status determined;
  • the terminal equipment is instructed to receive the first PDCCH through the candidate PDCCH corresponding to the plurality of search spaces, and the QCL information of the candidate PDCCH corresponding to each search space in the plurality of search spaces is received through the third A TCI status is determined.
  • the network device configures the fourth indication information, instruct the terminal device to receive the first PDCCH through the candidate PDCCH corresponding to the first search space, and when the network device does not configure the fourth indication information, instruct the terminal device Receive the first PDCCH through candidate PDCCHs respectively corresponding to multiple search spaces;
  • the network device when the network device does not configure the fourth indication information, instruct the terminal device to receive the first PDCCH through the candidate PDCCH corresponding to the first search space, and when the network device configures the fourth indication information, instruct the terminal device to receive the first PDCCH through the plurality of The candidate PDCCH corresponding to each search space receives the first PDCCH.
  • the fourth indication information is carried through RRC signaling or MAC CE signaling.
  • the number of at least one first TCI state includes multiple, and the sending unit 1101 is further configured to repeatedly send the first PDCCH through multiple candidate PDCCHs, and the QCL information of the multiple candidate PDCCHs is determined through multiple first TCI states. .
  • the first TCI state corresponding to the candidate PDCCH of each search space in the plurality of search spaces is based on the order of size of the identifiers of the multiple search spaces, and the order of the identifiers of the multiple first TCI states.
  • the order of size is determined;
  • the first TCI state corresponding to the candidate PDCCH of each search space in the plurality of search spaces, according to the size order of the identifiers of the plurality of search spaces, and the plurality of first TCI states in the second indication information The position in is determined;
  • the first TCI state corresponding to the candidate PDCCH of each control resource set in the multiple control resource sets is based on the size order of the identifiers of the multiple control resource sets and the size order of the identifiers of the multiple first TCI states.
  • the first TCI state corresponding to the candidate PDCCH of each control resource set in the multiple control resource sets is in the second indication according to the size order of the identifiers of the multiple control resource sets and the multiple first TCI states.
  • the location in the message is determined.
  • the sending unit 1101 is also configured to send fifth indication information and/or a plurality of sixth indication information, the fifth indication information and/or a plurality of sixth indication information to the terminal device, for determining multiple candidates. Correspondence between PDCCH and multiple first TCI states.
  • the fifth indication information is used to indicate any of the following:
  • the terminal device determines the first TCI state corresponding to the candidate PDCCH of each search space in the multiple search spaces according to the size order of the identifiers of the multiple search spaces and the size order of the identifiers of the multiple first TCI states;
  • the terminal equipment determines the first TCI state corresponding to the candidate PDCCH of each search space in the multiple search spaces according to the size order of the identifiers of the multiple search spaces and the positions of the multiple first TCI states in the second indication information;
  • the terminal device determines the first TCI state corresponding to the candidate PDCCH of each control resource set in the multiple control resource sets according to the size order of the identifiers of the multiple control resource sets and the size order of the identifiers of the multiple first TCI states;
  • the terminal device determines the first TCI state corresponding to the candidate PDCCH of each control resource set in the multiple control resource sets according to the size order of the identifiers of the multiple control resource sets and the positions of the multiple first TCI states in the second indication information. .
  • the fifth indication information is carried through RRC signaling or MAC CE signaling.
  • the plurality of sixth indication information is associated with multiple candidate PDCCHs, and each of the plurality of sixth indication information is used to indicate any one of the following:
  • the first TCI state corresponding to the candidate PDCCH associated with the sixth indication information is the first TCI state identified as the third designated identifier
  • the first TCI state corresponding to the candidate PDCCH associated with the sixth indication information is the first TCI state located at the specified position in the second indication information;
  • the third specified identifier is the largest identifier among the identifiers of the multiple first TCI states, or the smallest identifier among the identifiers of the multiple first TCI states; the specified position is the identifier of the multiple first TCI states in the second indication. The earliest position among the positions of the information, or the last position among the positions of the second indication information among the multiple first TCI states.
  • each sixth indication information is carried by the configuration information of the PDCCH search space associated with it, or by the configuration information of the control resource set corresponding to the PDCCH search space associated with it.
  • the first indication information is carried through any one of the following: RRC signaling, MAC CE signaling, and DCI.
  • the second indication information is carried through first MAC CE signaling.
  • the first MAC CE signaling includes at least one of the following:
  • each TCI quantity indication information in the at least one TCI quantity indication information is used to indicate the number of TCI states associated with the TCI quantity indication information;
  • At least one TCI type indication information is used to indicate the types of the multiple available TCI states;
  • the sending unit 1101 is also configured to send seventh indication information to the terminal device, where the seventh indication information is used to indicate that the type of the unified TCI state is a joint TCI state, and that at least one first TCI state is a joint TCI state; or , sending eighth indication information to the terminal device, where the eighth indication information is used to indicate that the type of the unified TCI state is the independent TCI state, and the at least one first TCI state is the downlink TCI state.
  • the data transmission device further includes a receiving unit configured to receive the first capability information and/or the second capability information sent by the terminal device; the first capability information is used to indicate that the terminal device supports multiple unified TCI states at the same time.
  • the terminal equipment supports one codebook in DCI to indicate multiple unified TCI states for downlink transmission; the second capability information is used to indicate that the terminal equipment supports repeated transmission of PDCCH, and/or, the terminal The device supports multiple search space associations.
  • the first capability information and/or the second capability information is a capability for any of the following objects: terminal equipment, carrier, frequency band, frequency band combination, frequency band combination, and frequency band in the frequency band combination, frequency band combination, and the frequency band combination.
  • Figure 12 is a schematic structural diagram of a communication device 1200 provided by an embodiment of the present application.
  • the communication device can be a terminal device or a network device.
  • the communication device 1200 shown in Figure 12 includes a processor 1210.
  • the processor 1210 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the communication device 1200 may further include a memory 1220.
  • the processor 1210 can call and run the computer program from the memory 1220 to implement the method in the embodiment of the present application.
  • the memory 1220 may be a separate device independent of the processor 1210, or may be integrated into the processor 1210.
  • the communication device 1200 can also include a transceiver 1230, and the processor 1210 can control the transceiver 1230 to communicate with other devices. Specifically, it can send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 1230 may include a transmitter and a receiver.
  • the transceiver 1230 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 1200 can be specifically a network device according to the embodiment of the present application, and the communication device 1200 can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, details will not be repeated here. .
  • the communication device 1200 can be a terminal device according to the embodiment of the present application, and the communication device 1200 can implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. For the sake of simplicity, here No longer.
  • Figure 13 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 1300 shown in Figure 13 includes a processor 1310.
  • the processor 1310 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 1300 may also include a memory 1320.
  • the processor 1310 can call and run the computer program from the memory 1320 to implement the method in the embodiment of the present application.
  • the memory 1320 may be a separate device independent of the processor 1310, or may be integrated into the processor 1310.
  • the chip 1300 may also include an input interface 1330.
  • the processor 1310 can control the input interface 1330 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 1300 may also include an output interface 1340.
  • the processor 1310 can control the output interface 1340 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiment of the present application.
  • the details will not be described again.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiment of the present application. For the sake of simplicity, here No longer.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Figure 14 is a schematic block diagram of a communication system 1400 provided by an embodiment of the present application. As shown in Figure 14, the communication system 1400 includes a terminal device 1410 and a network device 1420.
  • the terminal device 1410 can be used to implement the corresponding functions implemented by the terminal device in the above method
  • the network device 1420 can be used to implement the corresponding functions implemented by the network device in the above method.
  • no further details will be given here. .
  • the processor in the embodiment of the present application may be an integrated circuit chip and has signal processing capabilities.
  • each step of the above method embodiment can be completed through an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available processors.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • the steps of the method disclosed in conjunction with the embodiments of the present application can be directly implemented 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 random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field.
  • 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.
  • non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which is used as an external cache.
  • RAM Random Access Memory
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • enhanced SDRAM ESDRAM
  • Synchlink DRAM SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiment of the present application can also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), 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 (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, memories in embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.
  • Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of simplicity, here No longer.
  • the computer-readable storage medium can be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of simplicity, here No longer.
  • An embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiment of the present application.
  • the computer program product can be applied to the terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiment of the present application.
  • An embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiment of the present application.
  • the computer program can be applied to the terminal device in the embodiment of the present application.
  • the computer program When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiment of the present application. For the sake of simplicity , which will not be described in detail here.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code. .

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Abstract

本申请实施例提供一种数据传输方法及装置、终端设备、网络设备，该方法包括：终端设备确定针对第一物理下行控制信道PDCCH的至少一个第一传输配置指示TCI状态，其中，所述至少一个第一TCI状态用于指示多个候选PDCCH中至少一个候选PDCCH的准共址QCL信息，所述多个候选PDCCH用于传输/重复传输所述第一PDCCH；所述终端设备基于所述至少一个第一TCI状态，接收所述第一PDCCH。

Description

数据传输方法及装置、终端设备、网络设备 技术领域
本申请实施例涉及移动通信技术领域，具体涉及一种数据传输方法及装置、终端设备、网络设备。
背景技术
在新无线(New Radio，NR)系统中，存在多传输/发送接收点(Transmission/reception point，TRP)、多天线(panel)、或多波束(beam)同时给终端设备传输下行数据的场景。下行传输如果来自不同的TRP/panel/beam，则数据传输所对应的传输环境的特性可能也会有变化，网络设备可以通过传输配置指示(Transmission Configuration Indicator state，TCI)状态将对应的信道相关信息告知给终端设备。然而。目前的统一TCI状态(unified TCI state)仅支持单TRP/panel/beam，多TRP/panel/beam传输场景中的下行信道重复传输如何进行TCI状态配置，目前并没有具体的方法。
发明内容
本申请实施例提供一种数据传输方法及装置、终端设备、网络设备。
本申请实施例提供一种数据传输方法，包括：
终端设备确定针对第一物理下行控制信道(Physical Downlink Control Channel，PDCCH)的至少一个第一TCI状态，其中，所述至少一个第一TCI状态用于指示多个候选PDCCH中至少一个候选PDCCH的准共址(Quasi Co-Location，QCL)信息，所述多个候选PDCCH用于传输/重复传输所述第一PDCCH；
所述终端设备基于所述至少一个第一TCI状态，接收所述第一PDCCH。
本申请实施例提供一种数据传输方法，包括：
网络设备通过多个候选PDCCH中的至少一个候选PDCCH向终端设备传输第一PDCCH，所述多个候选PDCCH用于传输/重复传输所述第一PDCCH，所述至少一个候选PDCCH的QCL信息由针对所述第一PDCCH的至少一个第一TCI状态确定。
本申请实施例提供一种数据传输装置，应用于终端设备，包括：
确定单元，被配置为确定针对第一PDCCH的至少一个第一TCI状态，其中，所述至少一个第一TCI状态用于指示多个候选PDCCH中至少一个候选PDCCH的QCL信息，所述多个候选PDCCH用于传输/重复传输所述第一PDCCH；
接收单元，被配置为基于所述至少一个第一TCI状态，接收所述第一PDCCH。
本申请实施例提供一种数据传输装置，应用于网络设备，包括：
发送单元，被配置为通过多个候选PDCCH中的至少一个候选PDCCH向终端设备传输第一PDCCH，所述多个候选PDCCH用于传输/重复传输所述第一PDCCH，所述至少一个候选PDCCH的QCL信息由针对所述第一PDCCH的至少一个第一TCI状态确定。
本申请实施例提供的通信设备，可以是上述方案中的终端设备或者是上述方案中的网络设备，该通信设备包括处理器、存储器和收发器。收发器用于实现与其他设备的通信，该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述的数据传输方法。
本申请实施例提供的芯片，用于实现上述的数据传输方法。
具体地，该芯片包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有该芯片的设备执行上述的数据传输方法。
本申请实施例提供的计算机可读存储介质，用于存储计算机程序，该计算机程序使得计算机执行上述的数据传输方法。
本申请实施例提供的计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行上述的数据传输方法。
本申请实施例提供的计算机程序，当其在计算机上运行时，使得计算机执行上述的数据传输方法。
本申请实施例提供的数据传输方法，其中，终端设备在进行第一PDCCH的接收/检测时，可以 先根据至少一个第一TCI状态确定用于传输第一PDCCH的多个候选PDCCH中至少一个候选PDCCH的QCL信息，进而，终端设备根据至少一个候选PDCCH的QCL信息接收第一PDCCH。也就是说，终端设备可以根据一个或多个第一TCI状态，确定用于传输/重复传输的至少一个候选PDCCH的QCL，以基于至少一个候选PDCCH得到第一PDCCH，保证了第一PDCCH的正确传输。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1是本申请实施例提供的一个应用场景的示意图；
图2A是本申请实施例提供的一种多TRP传输示意图；
图2B是本申请实施例提供的一种多beam传输示意图；
图3是本申请实施例提供的一种数据传输方法的流程示意图一；
图4是本申请实施例提供的一种第一MAC CE的结构示意图一；
图5是本申请实施例提供的一种第一MAC CE的结构示意图二；
图6是本申请实施例提供的一种数据传输方法的流程示意图二；
图7是本申请实施例提供的一种数据传输方法的流程示意图三；
图8是本申请实施例提供的一种数据传输方法的流程示意图四；
图9是本申请实施例提供的一种数据传输方法的流程示意图五；
图10是本申请实施例提供的一种数据传输装置的结构组成示意图一；
图11是本申请实施例提供的一种数据传输装置的结构组成示意图二；
图12是本申请实施例提供的一种通信设备示意性结构图；
图13是本申请实施例的芯片的示意性结构图；
图14是本申请实施例提供的一种通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
图1是本申请实施例的一个应用场景的示意图。
如图1所示，通信系统100可以包括终端设备110和网络设备120。网络设备120可以通过空口与终端设备110通信。终端设备110和网络设备120之间支持多业务传输。
应理解，本申请实施例仅以通信系统100进行示例性说明，但本申请实施例不限定于此。也就是说，本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(Long Term Evolution，LTE)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、物联网(Internet of Things，IoT)系统、窄带物联网(Narrow Band Internet of Things，NB-IoT)系统、增强的机器类型通信(enhanced Machine-Type Communications，eMTC)系统、5G通信系统(也称为新无线(New Radio，NR)通信系统)，或未来的通信系统等。
在图1所示的通信系统100中，网络设备120可以是与终端设备110通信的接入网设备。接入网设备可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端设备110(例如UE)进行通信。
网络设备120可以是长期演进(Long Term Evolution，LTE)系统中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者是下一代无线接入网(Next Generation Radio Access Network，NG RAN)设备，或者是NR系统中的基站(gNB)，或者是云无线接入网络(Cloud Radio Access Network，CRAN)中的无线控制器，或者该网络设备120可以为中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器，或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)中的网络设备等。
终端设备110可以是任意终端设备，其包括但不限于与网络设备120或其它终端设备采用有线或者无线连接的终端设备。
例如，所述终端设备110可以指接入终端、用户设备(User Equipment，UE)、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。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP) 电话、IoT设备、卫星手持终端、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、5G网络中的终端设备或者未来演进网络中的终端设备等。
终端设备110可以用于设备到设备(Device to Device，D2D)的通信。
无线通信系统100还可以包括与网络设备120进行通信的核心网设备130，该核心网设备130可以是5G核心网(5G Core，5GC)设备，例如，接入与移动性管理功能(Access and Mobility Management Function，AMF)，又例如，认证服务器功能(Authentication Server Function，AUSF)，又例如，用户面功能(User Plane Function，UPF)，又例如，会话管理功能(Session Management Function，SMF)。可选地，核心网络设备130也可以是LTE网络的分组核心演进(Evolved Packet Core，EPC)设备，例如，会话管理功能+核心网络的数据网关(Session Management Function+Core Packet Gateway，SMF+PGW-C)设备。应理解，SMF+PGW-C可以同时实现SMF和PGW-C所能实现的功能。在网络演进过程中，上述核心网设备也有可能叫其它名字，或者通过对核心网的功能进行划分形成新的网络实体，对此本申请实施例不做限制。
通信系统100中的各个功能单元之间还可以通过下一代网络(next generation，NG)接口建立连接实现通信。
例如，终端设备通过NR接口与接入网设备建立空口连接，用于传输用户面数据和控制面信令；终端设备可以通过NG接口1(简称N1)与AMF建立控制面信令连接；接入网设备例如下一代无线接入基站(gNB)，可以通过NG接口3(简称N3)与UPF建立用户面数据连接；接入网设备可以通过NG接口2(简称N2)与AMF建立控制面信令连接；UPF可以通过NG接口4(简称N4)与SMF建立控制面信令连接；UPF可以通过NG接口6(简称N6)与数据网络交互用户面数据；AMF可以通过NG接口11(简称N11)与SMF建立控制面信令连接；SMF可以通过NG接口7(简称N7)与PCF建立控制面信令连接。
图1示例性地示出了一个网络设备、一个核心网设备和两个终端设备，可选地，该无线通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备，本申请实施例对此不做限定。
需要说明的是，图1只是以示例的形式示意本申请所适用的系统，当然，本申请实施例所示的方法还可以适用于其它系统。此外，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种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这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。还应理解，在本申请的实施例中提到的“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。还应理解，在本申请的实施例中提到的“对应”可表示两者之间具有直接对应或间接对应的关系，也可以表示两者之间具有关联关系，也可以是指示与被指示、配置与被配置等关系。还应理解，在本申请的实施例中提到的“预定义”或“预定义规则”可以通过在设备(例如，包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定。比如预定义可以是指协议中定义的。还应理解，本申请实施例中，所述“协议”可以指通信领域的标准协议，例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议，本申请对此不做限定。
为便于理解本申请实施例的技术方案，以下对本申请实施例的相关技术进行说明，以下相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。
1、多波束系统。
5G/NR系统的设计目标包括高频段(例如6GHz以上的频段)的大带宽通信。当工作频率变高时，传输过程中的路径损耗会增大，从而影响高频系统的覆盖能力。为了能够有效地保证高频段5G/NR系统的覆盖，一种有效的技术方案便是基于大规模多输入多输出(Massive MIMO)的多波束(Multi-beam)传输技术来提高覆盖能力。
现有的蜂窝网络系统(例如2G/3G/4G网络)，一个小区(扇区)使用一个较宽的波束(beam)来覆盖整个小区。因此在每个时刻，小区覆盖范围内终端设备都有机会获得系统分配的传输资源。
5G/NR的Multi-beam通过不同的beam来覆盖整个小区，即每个beam覆盖一个较小的范围，通过时间上的扫描(sweeping)来实现多个beam覆盖整个小区的效果。目前不同的beam通过其承载的不同信号来进行识别。
例如，不同的beam上传输不同的同步信号块(Synchronization Signal/PBCH Block，SSB)，终端设备可以通过不同的SSB来分辨出不同的beam。或者，不同的beam上传输不同的信道状态信息参考信号(Channel State Information Reference Signal，CSI-RS)，终端设备可以通过CSI-RS/CSI-RS资源来识别出不同的beam。
在Multi-beam传输场景中，物理下行控制信道(Physical Downlink Control Channel，PDCCH)和物理下行共享信道(Physical Downlink Shared Channel，PDSCH)可以通过不同的下行发送波束来传输。
对于非毫米波(例如2G/3G/4G)系统，终端设备一般没有模拟波束，因此采用全向天线(或者接近全向的天线)来接收基站通过不同下行发送波束发送的信号。
对于毫米波系统，终端设备可能会有模拟波束，此时，终端设备需要使用下行接收波束去接收对应的下行发送波束发送的信号。因此，需要相应的波束指示信息(beam indication)来协助终端设备确定网络设备的发送波束相关信息，或者终端设备对应的接收波束相关信息。
在NR系统中，波束指示信息不是直接指示波束本身，而是通过信号之间的准共址(Quasi Co-Location，QCL)信息来进行指示。终端设备可以基于QCL信息(也可以称为QCL假设)确定接收相应的信道/信号。网络设备在传输下行控制信道或数据信道，会通过传输配置指示(Transmission Configuration Indicator state，TCI)状态(TCI state)将对应的QCL信息告知给终端设备。
2、多传输/发送接收点(Transmission/reception point，TRP)或多天线(panel)或多beam传输。
多TRP传输(mTRP传输，或者M-TRP传输)，是指在同一个载波上，多个TRP可以同时和终端设备进行通信。多beam传输同样也是在同一个载波上，通过多个beam同时和终端设备进行通信。示例性的，参考图2A所示，在多TRP传输中，多个TRP(图2A中仅示出了TRP1和TRP2)可以使用独立的波束分别与终端设备进行传输。参考图2B所示，在多beam传输中，基站可通过不同的波束与终端设备进行通信。
需要说明的是，由于在NR系统中，多TRP传输、多panel、或者多beam同时和一个终端进行传输，可以采用相同的方案。因此，本申请实施例中不对上述概念加以区分，统称为多TRP/panel/beam。
在NR系统中，多TRP/panel/beam同时给终端设备传输下行数据的方式包括以下两种：
方式一、基于单PDCCH的方式(single-PDCCH based scheme)。具体地，终端设备只检测一个PDCCH，该PDCCH中一个DCI指示多个TRP/panel/beam上同时传输的数据的相关指示信息。
需要说明的是，通信系统中利用多个TCI-state来隐式地指示多个TRP/panel/beam上传输的数据。
方式二、基于多PDCCH的方式(multiple-PDCCH based scheme)。具体地，终端设备接收来自不同的TRP/panel/beam上不同的PDCCH，每个PDCCH上检测得到的DCI指示一个对应的数据传输的相关指示信息。
需要说明的是，每个DCI对应的控制资源集(CORESET)可能会关联到不同的CORESET资源池编号(CORESET pool index)，即DCI通过多个不同的CORESET pool index来隐式地支持多个TRP/panel/beam传输。
应理解，该方式一中，终端设备只需要检测一个PDCCH，因此控制信道检测复杂度可能会低于方式二。然而，方式一需要不同的panel/TRP/beam之间能够快速交互信息。而方式二中，终端设备需要在同一个载波上同时去检测多个PDCCH，复杂度可能会有所增加，但是灵活性和鲁棒性可能会改善。
可选地，上述方式二可以应用的场景可以包括以下至少一项：
场景1，多个TRP属于同一个小区，TRP之间的连接(backhaul)是理想的(即可以快速进行信息交互，动态信息交互)。
场景2，多个TRP属于同一个小区，TRP之间的连接(backhaul)是非理想的(即TRP之间无法快速交互信息，只能进行相对较慢的数据交互)。
场景3，多个TRP属于不同的小区，TRP之间的连接(backhaul)是理想的。
场景4，多个TRP属于不同的小区，TRP之间的连接(backhaul)是非理想的。
应理解，将场景1至场景4中的TRP对应的换成beam，则可以对应的得到四个Multi-beam的应用场景。
而对于上述方式一，只适用于理想backhaul的场景(例如上述场景1和场景3)。
在标准讨论的版本16(即R16)中，只研究和支持了下行数据传输的多TRP传输。在R17中，研究和支持了PDCCH，PUSCH，PUCCH的多TRP传输，以增加相应信道传输的可靠性。
在R15及R16中，PDCCH的时频资源通过一个搜索空间及该搜索空间所关联的CORESET定 义，其中该PDCCH传输时的TCI状态由CORESET的TCI状态来决定。高层信令为每个CORESET定义了一个或多个TCI状态，当高层信令为每个CORESET定义了多个TCI状态时，在任一时刻，MAC层信令会激活其中的一个TCI状态用于该CORESET所关联的所有搜索空间下的PDCCH的传输。也就是说，在现有规范中，每个搜索空间所定义的PDCCH由该搜索空间所关联的CORESET的唯一一个TCI状态来传输。由于PDCCH仅通过一个TCI状态进行传输时其链路可能发生堵塞，进而导致PDCCH无法被正确检测，为了提高PDCCH传输的可靠性，R17中研究了通过不同TRP进行PDCCH的传输。
为了支持PDCCH多TRP传输，当PDCCH通过两个TCI状态进行传输时，如何通过这两个TCI状态来传输PDCCH。3GPP采用的方案是把两个搜索空间关联起来，两个搜索空间分别与CORESET中的其中一个TCI状态关联，每个搜索空间包含一组候选PDCCH(PDCCH candidate)。关联的两个搜索空间上的候选PDCCH(或者说DCI)传输同一个调度信息，例如调度同一个上行传输，或者调度同一个下行传输。
需要说明的是，针对多TRP系统，以上描述的传输方案都是针对在同一个载波的情况，例如针对multiple-PDCCH based scheme，终端设备是在同一个载波上检测多个DCI(现有协议支持2个)，其中每个DCI可以调度对应的PDSCH，多个PDSCH也是在同一个载波上。再例如，PDCCH多TRP传输中，关联的两个搜索空间上的候选PDCCH都是在同一个载波上进行传输和接收的。
3、TCI状态。
终端设备在进行信号接收时，为了提高接收性能，可以利用数据传输所对应的传输环境的特性来改进接收算法。例如可以利用信道的统计特性来优化信道估计器的设计和参数。在NR系统中，数据传输所对应的这些特性通过QCL信息(QCL-Info)来表示。
应理解，一个TCI状态可以包括：TCI状态标识(ID)，QCL信息1，QCL信息2。其中，QCL信息2为可选项。另外，一个QCL信息可以包括：QCL类型配置和QCL参考信号配置，QCL类型配置可以是QCL类型A(typeA)，QCL typeB，QCL typeC或QCL typeD中的一个，参考信号配置可以是小区ID，带宽部分(Bandwidth Part，BWP)ID以及参考信号的标识(例如CSI-RS资源ID或SSB索引)；
其中，不同QCL类型的定义如下：QCL TypeA用于配置以下内容{多普勒频移(Doppler shift)，多普勒扩展(Doppler spread)，平均时延(average delay)，时延扩展(delay spread)}，QCL typeB用于配置{Doppler shift,Doppler spread}，QCL typeC用于配置{Doppler shift,average delay}，QCL typeD用于配置{空间Rx参数(Spatial Rx parameter)}。
可选地，网络设备可以为下行信号(或称为下行信道)指示相应的TCI状态。
如果网络设备通过TCI状态为目标下行信号(或目标下行信道)的QCL参考信号配置为SSB 1或CSI-RS 1资源，且QCL类型配置为typeA，typeB或typeC，则终端设备可以假设上述目标下行信号与SSB 1或参考CSI-RS 1的资源的大尺度参数是相同的或类似的，该大尺度参数通过QCL类型配置来确定。
如果网络设备通过TCI状态为目标下行信号(或下行信道)的QCL参考信号配置为SSB 2或CSI-RS 2资源，且QCL类型配置为typeD，则终端设备可以采用与接收SSB 2或CSI-RS 2资源相同的空间接收参数(即Spatial Rx parameter)，来接收目标下行信号。通常的，目标下行信号(或目标下行信道)与SSB 2或CSI-RS 2资源在网络设备侧由同一个TRP或者同一个panel或者相同的波束来发送。
应理解，如果两个下行信号(下行信道)的传输TRP或传输panel或发送波束不同，通常会配置不同的TCI状态。
对于下行控制信道，可以通过无线资源控制(Radio Resource Control，RRC)信令或者RRC信令加媒体接入控制(Medium Access Control，MAC)信令的方式来指示TCI状态。
对于下行数据信道，TCI状态集合通过RRC信令来指示，并通过MAC层信令来激活其中部分TCI状态，最后通过下行控制信息(DownlinkControlInformation，DCI)中的TCI指示域从激活的TCI状态中指示一个或两个TCI状态，用于所述DCI调度的PDSCH。
4、统一TCI状态。
上述TCI状态仅适用于下行信道和下行信号，且在NR系统中应用起来有诸多的限制。为了给NR系统提供一个更统一的上下行波束管理机制，在上述技术的基础上，第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)组织提出了统一TCI状态(unified TCI state)的概念。具体地，unified TCI state设计了2种unified TCI state的模式。
模式一：包含1类TCI state，这类TCI state可以适用于上行和下行的信道和信号；通常将这类TCI state称作联合TCI state(joint TCI state)
模式二：包含下行TCI state(DL TCI state)和上行TCI state(UL TCI state)两类TCI state。其中，DL TCI state仅适用于下行的信道和信号；UL TCI state仅适用于上行的信道和信号。这类TCI state可以称作separate TCI state(独立TCI state)。网络可以只配置其中一类TCI state，例如只配置下行TCI state，或者只配置上行TCI state；网络也可以同时配置这两类TCI state，例如网络同时配置了下行TCI state和上行TCI state。
应理解，下行信道(部分PDCCH，PDSCH)和信号(非周期CSI-RS)可以使用DL TCI state或joint TCI state指示对应传输。上行信道(例如物理上行控制信道PUCCH，物理上行共享信道PUSCH)和信号(信道探测参考信号SRS)使用UL TCI state或joint TCI state，指示上行传输，例如指示上行传输对应的空间滤波器(spatial domain filter)。
可选地，Unified TCI state可以使用MAC控制单元(MAC Control Element，MAC CE)和/或DCI动态更新和指示。
需要说明的是，unified TCI state适用于载波聚合的场景，单个分量载波(Component Carrier，CC)上的TCI state配置和/或指示可以适用于多个不同的CC。
对于每个CC上的CORESET可以分为以下四种类型：
CORESET A：它仅关联到终端设备专属的搜索空间上，因此可以认为是终端设备专属的下行控制信道资源，且一定要跟随被指示的unified TCI state(s)。
CORESET B：它仅关联到小区公共的搜索空间上，它是否可以跟随网络指示的unified TCI state(s)，需要根据网络的RRC配置确定。
CORESET C：它即关联到终端设备专属的搜索空间上，也关联到小区公共的搜索空间上，它是否可以跟随网络指示的unified TCI state(s)，需要根据网络的RRC配置确定。
CORESET 0：它关联到小区公共的搜索空间，也可以同时关联到终端设备专属的搜索空间，它是否可以跟随网络指示的unified TCI state(s)，需要根据网络的RRC配置确定。
需要说明的是，本申请实施例提及的TCI state，如果没有明确指明是哪种TCI state，则包含前述提到的任意TCI state。也就是说，TCI state可以是joint TCI state，可以是separate TCI state，可以是DL TCI state，可以是UL TCI state，也可以是他们的组合(即包含多个不同类型的TCI state)。实际应用中，如果使用RRC参数“TCI-State”进行配置，那么一般指的是DL TCI state和/或joint TCI state。如果使用RRC参数“DLorJointTCIState”进行配置，那么一般指的是DL TCI state和/或joint TCI state。如果使用RRC参数“UL-TCIState”或“TCI-UL-State”或“UL-TCI-State”进行配置，那么一般指的是UL TCI state。
5、PDCCH。
网络设备通过配置控制资源集(CORESET)和搜索空间(Search Space)，来指示PDCCH的传输。
其中，CORESET在频域上包括多个物理资源块，在时域上包括1～3个时域符号。CORESET占用的时域资源由高层参数半静态配置。
另外，搜索空间是一个或多个聚合等级下候选PDCCH(PDCCH candidate)的集合。网络设备(例如基站)实际发送的PDCCH的聚合等级可变，由于没有相关信令告知终端设备，终端设备需要在不同聚合等级下盲检PDCCH。其中，待盲检的PDCCH称为候选PDCCH。终端设备会在搜索空间内对候选PDCCH进行译码，如果循环冗余校验(Cyclic Redundancy Check，CRC)校验通过，则认为所译码的PDCCH的内容对所述终端设备有效，并利用译码所获得的信息进行后续操作。
需要说明的是，搜索空间还可称为搜索空间集合(Search Space set)，搜索空间和搜索空间集合为同一概念。
在NR系统中，每个服务小区的每个下行BWP内，网络设备最多可以为终端设备配置10个搜索空间，该搜索空间中配置了时域配置信息，用以指示终端设备检测PDCCH的时域位置。同时网络设备为每个搜索空间配置了关联的CORESET标识(CORESET ID)，终端设备通过CORESET ID可以获得该搜索空间在频域上的物理资源。每个搜索空间集合有一个唯一关联的CORESET ID。不同的搜索空间集合可以关联到相同的CORESET ID。终端设备根据搜索空间集合给出的时域和关联的CORESET ID的频域及搜索空间集合中的其它参数来确定候选PDCCH的时频域位置。
网络设备在配置CORESET时，为每个CORESET配置了一个或一组TCI状态，该TCI状态用来指示终端设备在该CORESET关联的搜索空间的候选PDCCH进行解调检测时所需要的相关参数。 当网络设备为某个CORESET配置了一组TCI状态，网络设备会通过MAC CE信令为该CORESET激活一个TCI状态，用来协助终端设备解调此PDCCH。
此外，网络设备还可以为每个CORESET配置一个用以指示是否为相同TRP的高层指示(即CORESET pool index，RRC参数中对应名字为coresetPoolIndex)。该值的取值范围为0和1。对于配置了相同的CORESET pool index的CORESET，终端设备可以认为这是来自相同TRP的数据。
R17的unified TCI state仅支持单TRP/panel/beam的场景，针对多TRP/panel/beam传输系统中的PDCCH repetition，unified TCI state如何配置和指示，还缺乏完善的方案和具体细节。
为便于理解本申请实施例的技术方案，以下通过具体实施例详述本申请的技术方案。以上相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。本申请实施例包括以下内容中的至少部分内容。
图3是本申请实施例提供的数据传输方法的流程示意图一，如图3所示，该方法包括以下内容。
步骤310、终端设备确定针对第一PDCCH的至少一个第一TCI状态，其中，至少一个第一TCI状态用于指示多个候选PDCCH(PDCCH candidate)中至少一个候选PDCCH的QCL信息，多个候选PDCCH用于传输/重复传输第一PDCCH；
步骤320、终端设备基于至少一个第一TCI状态，接收第一PDCCH。
本申请实施例中，至少一个第一TCI状态可以是激活的或使用的统一TCI状态。至少一个第一TCI状态可以是网络设备配置的。
应理解，终端设备在进行第一PDCCH的接收/检测时，可以先根据至少一个第一TCI状态确定用于传输第一PDCCH的多个候选PDCCH中至少一个候选PDCCH的QCL信息，进而，终端设备根据至少一个候选PDCCH的QCL信息接收第一PDCCH。
可选地，网络设备配置的第一TCI状态的数量为1的情况下，终端设备可以根据配置的一个第一TCI状态接收/检测一个候选PDCCH得到第一PDCCH(即不进行重复传输)，或者，终端设备根据配置的一个第一TCI状态，确定多个候选PDCCH中的每个候选PDCCH的QCL信息，并接收/检测多个候选PDCCH得到第一PDCCH(仍然进行重复传输)。需要说明的是，终端设备在第一TCI状态的数量为1的情况下，使用以上两种方式中的哪一个方式可以是预定义的，也可以由网络设备配置，本申请实施例对此不做限制。
另外，网络设备配置的第一TCI状态的数量为多个时，终端设备可以根据配置的每个第一TCI状态确定多个候选PDCCH中每个候选PDCCH的QCL信息，并接收/检测多个候选PDCCH得到第一PDCCH。
需要说明的是，多个候选PDCCH可以来自不同的搜索空间，并且多个候选PDCCH传输同一个调度信息，对应多TRP/panel/beam的传输场景中PDCCH重复传输。
综上可知，终端设备可以根据一个或多个第一TCI状态，确定用于传输/重复传输的至少一个候选PDCCH的QCL，以基于至少一个候选PDCCH得到第一PDCCH，保证了第一PDCCH的正确传输。
以下详细介绍至少一个第一TCI状态的配置和确定方法。
可选地，终端设备可以接收网络设备发送的搜索空间关联指示信息，该搜索空间关联指示信息用于指示多个搜索空间关联，这里的多个搜索空间在同一个BWP中。
应理解，关联的多个搜索空间可以用于PDCCH重复传输(PDCCH repetition)。
本申请实施例中所提及的多个候选PDCCH分别为多个搜索空间中的候选PDCCH。第一PDCCH的接收可以包括上述多个搜索空间中的多个候选PDCCH。也就是说，多个候选PDCCH可以用于传输/重复传输第一PDCCH。
应理解，上述多个搜索空间对应的候选PDCCH传输同一个调度信息(或者说传输同一个DCI)，例如多个候选PDCCH调度同一个上行传输，或者调度同一个下行传输。
可选地，搜索空间关联指示信息可以通过RRC信令携带，或者MAC CE信令携带，本申请实施例对此不做限制。
可选地，该搜索空间关联指示信息可以通过多个搜索空间中任意一个搜索空间的配置信息携带，该配置信息中可以指示与当前搜索空间关联的其他搜索空间。
示例性的，若需要将第一搜索空间和第二搜索空间进行关联，则可以将其中一个搜索空间关联指示信息包含在第一搜索空间配置信息中，并且通过该搜索空间关联指示信息指示第二搜索空间；可选的，还存在另一个搜索空间关联指示信息，另一个搜索空间关联指示信息包含在在第二搜索空间配置信息中，并且通过该搜索空间关联指示信息指示第一搜索空间。
示例性的，搜索空间关联指示信息通过RRC信令中的信息域“searchSpaceLinking”或信息域“searchSpaceLinkingId”来指示。其中，搜索空间关联指示信息取值可以为0到39中(包括0和39)的正整数，不同的取值用于指示不同的搜索空间。
可选地，搜索空间关联指示信息的数量可以包括多个，多个搜索空间关联指示信息可以与网络设备配置的多个搜索空间一一对应。每个搜索空间的配置信息中可以携带一个搜索空间关联指示信息，相互关联的搜索空间其搜索空间关联指示信息的取值相同。
示例性的，搜索空间关联指示信息通过RRC信令中的信息域“searchSpaceLinking”或信息域“searchSpaceLinkingId”来指示。其中，搜索空间关联指示信息取值可以为0到39中(包括0和39)的正整数，相互关联的搜索空间其搜索空间关联指示信息的取值相同。
可选地，上述多个搜索空间的类型相同，例如，多个搜索空间均为公共搜索空间(Common Search Space，CSS)，或者均为终端特定搜索空间(UE-specific Search Space，USS)，本申请实施例对此不做限制。
可选地，多个搜索空间可以具有相同的DCI格式，例如，多个搜索空间的DCI格式可以均为DCI格式0_1，DCI格式0_2，DCI格式1_1，DCI格式1_2，或其他格式，本申请实施例对此不做限制。
可选地，多个搜索空间可以满足以下部分或全部条件：
条件1：多个搜索空间中的任何一个都不会与其他搜索空间相关联(这里的关联，具体是指上述多个搜索空间之间的关联)，或者，终端设备不期望上述多个搜索空间中的任何一个与其他搜索空间相关联；
条件2：若PDCCH重复传输是在一个时域单元(例如时隙、半时隙、多个时域符号集合)中，则上述多个搜索空间具有相同的周期和/或相同偏移，或者上述多个搜索空间占用的时域符号数相同(the same duration)，或者上述多个搜索空间在一个时域单元中具有相同的PDCCH检测机会(the same number of Monitoring Occasions within a slot)。示例性的，网络设备可以设置上述多个搜索空间中每个搜索空间的配置信息中RRC信息域“monitoringSlotPeriodicityAndOffset”取值相同，来指示多个搜索空间具有相同的周期或者偏移。
条件3：上述多个搜索空间不属于以下类型：搜索空间search space 0，用于搜索系统信息块1的搜索空间searchSpaceSIB1，用于搜索其他系统信息的搜索空间searchSpaceOtherSystemInformation，用于搜索寻呼消息的搜索空间pagingSearchSpace，用于随机接入的搜索空间ra-SearchSpace，用于搜索广播信息的搜索空间searchSpaceBroadcast，搜索空间peiSearchSpace，以及搜索空间sdt-SearchSpace。
条件4：多个搜索空间没有被RRC信令中的参数“recoverySearchSpaceId”指示。
可选地，多个搜索空间可以与多个控制资源集对应。一个搜索空间可以唯一对应(或关联)一个控制资源集，不同的搜索空间对应(或关联)的控制资源集可以相同也可以不同，本申请实施例对此不做限制。
可选地，每个搜索空间配置信息中可以指示与其对应(或关联)的搜索空间的标识信息。示例性的，每个搜索空间对应的控制资源集可以通过RRC信令中的信息域“controlResourceSetId”来指示。
可选地，本申请实施例中，上述至少一个第一TCI状态为统一TCI状态(unified TCI state)，其中，至少一个第一TCI状态的类型可以是联合TCI状态(joint TCI state)，也可以是下行TCI状态(DL TCI state)，本申请实施例对此不做限制。
本申请实施例中，至少一个第一TCI状态用于下行操作(DL operation)/下行传输(DL transmission)/下行接收(DL reception)。在后续描述中，为了简化，往往只说其中部分，例如说用于下行，或者说用于下行传输。
应理解，上述至少一个第一TCI状态的类型可以是网络设备配置的。网络设备可以向终端设备发送第七指示信息或第八指示信息，通过第七指示信息或第八指示信息来配置至少一个第一TCI状态的类型。
在一种可能的实现方式中，若终端设备接收到网络设备发送的第七指示信息，该第七指示信息用于指示统一TCI状态的类型为joint TCI state，则步骤310中的至少一个第一TCI状态为joint TCI state。
其中，joint TCI state可以用于上行操作(UL operation)或上行传输(UL transmission)，也可以用于下行操作/下行传输/下行接收。
可选地，第七指示信息通过RRC IE信息域“unifiedTCI-StateType”指示，其取值为“joint”。
可选地，第七指示信息针对服务小区配置的。
可选地，第七指示信息可以携带在RRC IE信息域“ServingCellConfig”中。
可选地，在该实现方式中，上述至少一个第一TCI状态可以为第一TCI状态组中的TCI状态。其中，第一TCI状态组可以用于上行操作或上行传输，也可以同时用于下行操作/下行传输/下行接收。
可选地，第一TCI状态组可以是网络设备通过第九指示信息配置的。
可选地，第九指示信息可以通过RRC信令配置。
可选地，第九指示信息可以通过RRC IE信息域“PDSCH-Config”配置。
可选地，第九指示信息可以通过RRC IE信息域“dl-OrJoint-TCIStateList”指示。
在另一种可能的实现方式中，若终端设备接收到网络设备发送的第八指示信息，该第八指示信息用于指示统一TCI状态的类型为独立TCI状态，则步骤310中至少一个第一TCI状态为DL TCI state。
其中，DL TCI state用于下行操作/下行传输/下行接收。
可选地，第八指示信息通过RRC IE信息域“unifiedTCI-StateType”指示，其取值为“Separate”。
可选地，第八指示信息针对服务小区配置的。
可选地，第八指示信息可以携带在RRC IE信息域“ServingCellConfig”中。
可选地，在该实现方式中，上述至少一个第一TCI状态可以为第二TCI状态组中的TCI状态。其中，第二TCI状态组用于下行操作/下行传输/下行接收。
可选地，第二TCI状态组可以是网络设备通过第十指示信息配置的。
可选地，第十指示信息可以通过RRC信令配置。
可选地，第十指示信息可以通过RRC IE信息域“PDSCH-Config”配置。
可选地，第十指示信息可以通过RRC IE信息域“dl-OrJoint-TCIStateList”指示。
可选地，在该实现方式中，网络设备还可以向终端设备发送第十一指示信息，该第十一指示信息用于配置或指示第三TCI状态组，该第三TCI状态组用于上行操作或上行传输。
可选地，第十一指示信息可以通过RRC IE信息域“BWP-UplinkDedicated”配置。
可选地，第十一指示信息可以通过RRC IE信息域“ul-TCI-ToAddModList”指示。
可选的，第七指示信息和第八指示信息可以通过相同的RRC参数指示，但是对应的RRC参数取值不同。
本申请实施例中，终端设备可以确定针对第一PDCCH的至少一个第一TCI状态。至少一个第一TCI状态可以用于下行操作/下行传输/下行接收。可以理解的是，针对第一PDCCH的至少一个第一TCI状态，是指用于第一PDCCH传输的第一TCI状态。终端设备可以根据至少一个第一TCI状态，确定接收(或检测)第一PDCCH的至少一个候选PDCCH的QCL信息。
可选地，本申请实施例中的至少一个第一TCI状态可以是终端设备根据网络设备发送的指示信息确定。
可选地，终端设备可以接收网络设备发送的第二指示信息。该第二指示信息用于配置多个可用的TCI状态，多个可用的TCI状态包括上述至少一个第一TCI状态。
需要说明的是，该第二指示信息配置的多个可用的TCI状态可以为上述第九指示信息至第十一指示信息中，至少一个指示信息所配置的TCI状态组中的部分TCI状态或全部TCI状态。例如，第二指示信息配置的多个可用的TCI状态可以为第九指示信息所配置的第一TCI状态组中的部分TCI状态或全部TCI状态，第二指示信息配置的多个可用的TCI状态也可以是第十指示信息所配置的第二TCI状态组和第十一指示信息所配置的第三TCI状态组中的部分TCI状态或所有TCI状态。
可选地，多个可用的TCI状态中还可以包括至少一个第二TCI状态。其中，第二TCI状态用于上行操作或上行传输。
可选地，第二指示信息可以通过第一MAC CE信令携带(或传输)。应理解，使用MAC CE信令延时比RRC信令低，同时也具有较好的传输可靠性，便于网络快速指示终端设备进行相应的操作。
以下详细介绍第一MAC CE信令的具体结构。
可选地，第一MAC CE信令包括以下中的至少一项：
DL BWP指示信息；
UL BWP指示信息；
至少一个TCI数量指示信息；至少一个TCI数量指示信息中每个TCI数量指示信息用于指示该TCI数量指示信息关联的TCI状态的数量；
至少一个TCI类型指示信息；至少一个TCI类型指示信息用于指示多个可用的TCI状态的类型；
多个可用的TCI状态的配置信息。
其中，DL BWP指示信息可以是DL BWP的编号或者标识(DL BWP ID)，该DL BWP指示信息可以用于指示终端设备下行操作/下行传输/下行接收使用的BWP。第一MAC CE可以应用于该DL BWP。可选地，该DL BWP指示信息的信息域(field)长度可以为2比特(bit)。
对应的，UL BWP指示信息可以是DL BWP的编号或者标识(DL BWP ID)，该UL BWP指示信息可以用于指示终端设备上行操作或上行传输使用的BWP。可选地，该UL BWP指示信息的信息域(field)长度可以为2bit。
本申请实施例中，第一MAC CE信令还可以包括K个TCI数量指示信息，K为大于或等于1的整数。每个TCI数量指示信息可以指示M个TCI状态，M为大于1的整数。可选地，K的取值为8或16，或其他取值，本申请实施例对此不做限制。
应理解，M个TCI状态可以包括用于上行操作/上行传输的UL TCI state，以及用于下行操作/下行传输/下行接收的DL TCI state。每个TCI数量指示信息可以指示UL TCI state和DL TCI state的总数量，如此，能够减少比特数，压缩第一MAC CE信令的开销。
可选地，每个TCI数量指示信息的长度可以为2bit或3bit，以及其他数量的比特，本申请实施例对此不做限制。
可选地，M的取值可以为1-4中的任一值。其中，UL TCI state的数量小于或等于2，DL TCI state的数量小于或等于2。如此设置M的取值实现简单，能够获得多TRP的绝大部分性能增益，同时提高了网络配置和调度的灵活性。
可选地，在M小于或等于4的场景中，每个TCI数量指示信息所在的信息域的一个码本(codepoint)可以对应1个或2个Joint TCI state。
可选地，M的取值可以为1-6中的任一值。其中，DL TCI state的数量小于或等于4，UL TCI state的数量小于或等于2。如此设置M的取值可以支持更多TRP进行下行传输，在部分场景下，对下行性能有一些提升，为网络优化提供更大的自由度。
可选地，M的取值可以是1-8中的任一值。其中，DL TCI state的数量小于或等于4，UL TCI state的数量小于或等于4。如此设置M的取值，可以支持更多TRP进行下行传输和上行传输，在部分场景下，对下行和上行性能有一些提升，为网络优化提供更大的自由度
可选地，在M小于等于6，或M小于等于8的场景中，每个TCI数量指示信息所在的信息域的一个码本(codepoint)可以对应1个、2个、3个或4个Joint TCI state。
本申请实施例中，第一MAC CE信令中还可以包括至少一个TCI类型指示信息，用于指示对应的TCI state是DL/Joint TCI state，还是UL TCI state。
可选地，TCI类型指示信息用于指示所在同一个字节(Octet)的TCI状态是DL/Joint TCI state，还是UL TCI state。
可选的，TCI类型指示信息用于指示所在同一个字节的TCI状态是第二TCI state组中的TCI state，还是第三TCI state组中的TCI state。
本申请实施例中，第一MAC CE信令中可以包括多个TCI指示域，用于指示多个可用的TCI状态的配置信息。其中，每个TCI指示域可以指示一个TCI状态的配置信息。
可选地，配置信息可以包括TCI状态ID，QCL信息1，以及QCL信息2。
可选地，第一MAC CE信令中还可以包括一个或多个字节指示信息，这里的一个或多个字节指示信息与上述多个TCI指示域对应，其中，每个字节指示信息用于指示其对应的TCI指示域是否存在。
示例性的，参考图4所示的第一MAC CE信令结构示意图一，其中，C i为字节指示信息，i为大于或等于0的整数。C i可以指示位于C i所属字节之后的另一字节中包括的TCI状态(即图4中的TCI state ID i,2)是否存在。
可选地，如果TCI状态的配置信息用于配置DL/Joint TCI state，那么该TCI状态的配置信息长度为7bit。
可选地，如果TCI状态的配置信息用于配置UL TCI state，那么该TCI状态的配置信息的最高比特位(the most significant bit)是保留比特位，其余6比特指示UL TCI state。
可选地，如果TCI状态的配置信息用于配置UL TCI state，该TCI状态配置信息的7个比特位可以均用于指示UL TCI state，能够指示更多的UL TCI state，提高网络调度灵活性。
可选地，第一MAC CE信令中除了以上信息之外，还可以包括服务小区指示信息，示例性的，可以使用服务小区ID来指示对应的服务小区。服务小区指示信息的长度为5bit。本申请实施例中的 第一MAC CE信令应用于所指示的服务小区。
可选地，第一MAC CE信令中还可以包括TCI状态子集合(或者称为DCI codepoint)数量指示信息，其指示值为1到K之间的正整数。可选地，该TCI状态子集合数量是指第一MAC CE信令中指示的TCI状态对应的DCI中第一信息域的codepoint的数目，可选的，第一信息域为DCI中的“Transmission configuration indication”信息域。通过在第一MAC CE信令中指示DCI中codepoint的数量，可以让终端设备减少读取/解析部分比特的信息，降低实现复杂度。
可选地，第一MAC CE信令中指示的(也可以称为激活的)TCI状态的最大数量可以为32、48、或者64。
应理解，若第一MAC CE信令指示的TCI状态的最大数量为32，则终端设备最多支持上下行都是2个TRP传输。若第一MAC CE信令指示的TCI状态的最大数量为48，则终端设备最多支持下行4个TRP传输，上行2个TRP传输，以提高下行传输性能，以及网络配置和调度的灵活性，同时也把终端设备的实现复杂度控制在一定范围。若第一MAC CE信令指示的TCI状态的最大数量为64，则终端设备最多支持下行4个TRP传输，上行4个TRP传输，以提高上行和下行传输性能，以及网络配置和调度的灵活性，终端设备的实现复杂度较高。
可选地，第一MAC CE指示的(也可以称为激活的)Joint TCI state的最大数量为16，或者32。
在一示例中，参考图4所示的第一MAC CE信令结构示意图一，第一MAC CE信令中可以包括：服务小区ID，DL BWP ID，UL BWP ID，TCI状态ID i,j，字节指示信息C i，以及保留比特R。其中，i的取值从0至M-1，j的取值为0至K-1。
其中，每个TCI状态ID i,j可以用于指示第一TCI状态组中的一个TCI state，i可以对应DCI中“Transmission configuration indication”信息域的codepoint的编号，TCI state ID i,j指示了DCI中“Transmission configuration indication”信息域的第i个codepoint对应的第j个TCI状态。
需要说明的是，TCI状态和codepoint的对应关系有各种方案，例如TCI状态ID 0,1和TCI状态ID 0,2对应“Transmission configuration indication”信息域的取值(或者指示值)为0，TCI状态ID 1,1和TCI状态ID 1,2对应“Transmission configuration indication”信息域的取值(或者指示值)为1，依次类推。
应理解，TCI状态ID i,j，j大于1是可选的，取决于C i的指示。示例性的，图4中C i可以用于指示TCI状态ID i,2的字节是否存在。若C i取值为1，则包含TCI状态ID i,2的字节存在；如果这个C i取值为0，则包含TCI状态ID i,2的字节不存在。或者，若C i取值为1，则包含TCI状态ID i,2的字节不存在；若C i取值为0，则包含TCI状态ID i,2的字节存在。
另外，R为保留比特，取值可以为0，或者其他指定值，本申请实施例对此不做限制。
需要说明的是，以上第一MAC CE信令结构仅仅是一个示意，不同信息域的位置可以调整，同时上述第一MAC CE信令中的一些信息可以是可选的，也就是说，第一MAC CE信令中可以不包括以上部分信息。
在另一示例中，参考图5所示的第一MAC CE信令结构示意图二，第一MAC CE信令中可以包括：服务小区ID，DL BWP ID，UL BWP ID，TCI状态ID，多个TCI数量指示信息，TCI类型指示信息(图5中使用D/U表征)，以及保留比特R。
其中，每个TCI数量指示信息可以由一个P i,0和P i,1组成的比特子组(a subset of bits)指示。P i,0和P i,1组成的比特子组的取值指示DCI的“Transmission configuration indication”信息域中第i个codepoint对应M个TCI state。
可选地，M的取值可以为1-4中的任一值。例如P i,0和P i,1取值为00,01,10,11分别对应的M取值为1,2,3,4；P i,0和P i,1取值为00,10,01,11分别对应的M取值为1,2,3,4。其中，上述M个TCI state中不多于2个DL TCI state，M个TCI state中不多于2个UL TCI state。可选地，P i,0和P i,1可以指示第i个codepoint对应的1个或2个joint TCI state。
应理解，每个TCI数量指示信息可以指示UL TCI state和DL TCI state的总数量，如此，能够减少比特数，压缩第一MAC CE信令的开销。
可选地，i取值可以从0开始(图5中的示例)，也可以从1开始，本申请实施例对此不做限制。
可选地，在网络设备通过第七指示信息指示统一TCI状态的类型为joint TCI state的情况下，P i,0和P i,1可以分别指示第i个codepoint对应M1个DL TCI state和M2个UL TCI state。例如，P i,0指示M1个DL TCI state，P i,1指示M2个UL TCI state；或者，P i,0指示M2个UL TCI state，P i,1指示M1个DL TCI state，本申请实施例对指示方式不做限制。
可选地，M1和M2的取值可以为1,2中的任一值。
应理解，通过分别指示DL TCI state和UL TCI state的数量，能够更加灵活地设计MAC CE信令，便于未来的方案扩展。
另外，本申请实施中，TCI类型指示信息(图5中使用D/U表征)用于指示同一个字节里TCI状态ID所指示的TCI状态为DL/joint TCI state，还是UL TCI state。
示例性的，D/U取值为1，指示同一个字节里TCI状态ID所指示的TCI状态的类型为DL/joint TCI state；D/U取值为0，指示同一个字节里TCI状态ID所指示的TCI状态的类型为UL TCI state。或者，D/U取值为0，指示同一个字节里TCI状态ID所指示的TCI状态的类型为DL/joint TCI state；D/U取值为1，指示同一个字节里TCI状态ID所指示的TCI状态的类型为UL TCI state。本申请实施例对具体指示方式不做限制。
可选地，TCI状态ID指示一个TCI state，可以是DL TCI state/joint TCI state，也可以是一个UL TCI state。示例性的，如果D/U的取值为1，TCI状态ID所指示的TCI状态的类型为DL/joint TCI state，那么TCI状态ID信息域的长度为7bit；如果D/U域取值为0，TCI状态ID所指示的TCI状态的类型为UL TCI state，那么TCI状态ID信息域的长度为7bit或6bit。当TCI状态ID信息域的长度为6bit时，该TCI状态ID的最高位(the most significant bit)是保留比特，剩余的6比特指示UL TCI state。
在一些实施例中，终端设备可以根据以上第一MAC CE信令中携带的信息，确定网络设备指示的多个可用(激活)的TCI状态，具体地，用于第一PDCCH传输的至少一个第一TCI状态可以是第一MAC CE信令中配置的多个可用(激活)的TCI状态中用于下行操作/传输/接收的TCI状态。
在另一些实施例中，终端设备还可以接收网络设备发送的第一指示信息，第一指示信息用于指示所述多个可用的TCI状态中至少一个TCI状态，具体地，用于第一PDCCH传输的至少一个第一TCI状态可以是第一指示信息中指示的至少一个TCI状态中用于下行操作/传输/接收的TCI状态。
可选地，第一指示信息可以指示以下中的至少一项：
PDSCH解调参考信号(Demodulation Reference Signal，DMRS)对应的QCL信息；
PDCCH DMRS对应的QCL信息，或者部分CORESET对应的DMRS对应的QCL信息；
至少部分CSI-RS对应的QCL信息；
PUSCH的上行发送空间滤波器(UL TX spatial filter)；
至少部分PUCCH的上行发送空间滤波器；
至少部分SRS的上行发送空间滤波器。
可选地，第一指示信息可以与第二指示信息为同一信息。也就是说，终端设备可以仅根据第一MAC CE信令确定用于第一PDCCH传输的至少一个第一TCI状态。例如，第一MAC CE仅指示第一码点(codepoint)对应的TCI state，没有指示其他码点对应的TCI state，并且第一码点对应TCI state X1，X2，则终端设备可以直接根据TCI state X1和X2确定所述至少一个第一TCI状态。
可选地，第一指示信息也可以与第二指示信息为不同的信息。也就是说，终端设备可以根据第一MAC CE信令确定多个可用的(或称为激活的)TCI状态。网络设备通过第二指示信息指示可用的TCI状态中至少一个TCI状态，以告知终端设备其使用的至少一个TCI状态。进而，终端设备可以根据第一指示信息和第二指示信息确定用于第一PDCCH传输的至少一个第一TCI状态。
可选地，第一指示信息可以通过RRC信令，或MAC CE信令(例如第一MAC CE信令)传输。
可选的，第一指示信息也可以通过DCI传输。可选的，第一指示信息可以通过DCI中的“Transmission configuration indication”信息域来传输。例如第一MAC CE指示第一码点(codepoint)对应TCI state X1，X2，第二码点(codepoint)对应TCI state X3，第一指示信息通过DCI对应信息域指示了第一码点，则终端设备可以根据TCI state X1和X2确定所述至少一个第一TCI状态。
可选地，该DCI可以为DCI格式1_1和/或DCI格式1_2。其中，DCI格式1_1/DCI格式1_2可是同时调度数据或者不调度下行传输。
可选的，该DCI为DCI格式1_1，DCI格式1_2，DCI格式0_1，以及DCI格式0_2中的至少一项。其中，DCI格式1_1/DCI格式1_2可是同时调度数据或者不调度下行传输(with or without,DL assignment)，DCI格式0_1/DCI格式0_2可是同时调度数据或者不调度上行传输(with or without,UL assignment)。
可选的，如果不调度下行传输(without DL assignment)，对于DCI格式1_1/DCI格式1_2，终端设备可以进行如下假设(或者说，DCI格式1_1/DCI格式1_2满足如下条件)：
参考信号临时标识符(CS-RNTI)用于对DCI的CRC进行加扰；
或者，DCI信息域的设置包括：RV全部设置为1(即RV＝all'1's)，MCS全部设置为1(即MCS＝all'1's)，NDI设置为0(即NDI＝0)；另外，对于FDRA类型0，全部设置为0(Set to all'0's for FDRA  Type 0)，或者对于FDRA类型1，全部设置为1(Set to all'1's for FDRA Type 1)；或者对于dynamicSwitch，全部设置为0(Set to all'0's for dynamicSwitch)。
可选地，如果第一指示信息指示的一个或多个TCI状态中至少一个TCI状态(例如TCI state X)与先前指示的(the previously indicated)TCI状态中的任意一个都不同，或者如果第二指示信息指示的一个或多个TCI state中至少一个TCI state(例如TCI state X)与第一终端设备当前激活(activated)/使用(applied)的所有TCI state中的任意一个都不同，那么从第一PUCCH的最后一个符号起之后的至少间隔BeamAppTime个符号后的第一个时域单元(例如时隙)开始，第一指示信息指示的TCI state X生效，即终端设备可以根据TCI state X来确定上行发送空间滤波器，和/或下行传输/接收对应的QCL信息。其中，第一PUCCH传输承载第一指示信息DCI对应的HARQ-ACK信息。
示例性的，以一个DCI最多能指示2个用于下行操作/传输/接收的TCI state为例，假设网络设备先前指示了TCI state A1，TCI state A2用于下行传输，当前这次DCI指示的信号中包含了TCI state X，并且TCI state X和TCI state A1/A2都不同，则需要考虑上面的流程，来确定TCI state X在什么时候可以使用(can be applied)。再例如，目前终端设备使用1个或2个TCI state(记为A1，A2)来确定下行传输对应的QCL信息，当前这次DCI指示的信号中包含了TCI state X，并且TCI state X和TCI state A1/A2都不同，则需要考虑上面的流程，来确定TCI state X在什么时候可以使用(can be applied)。
可选地，在将第一指示信息指示的当前TCI状态与先前指示的TCI状态进行对比时，优先考虑相同方向的TCI状态。例如，如果TCI state X用于上行传输，则考虑先前指示的用于上行传输的TCI状态与TCI state X不同；如果TCI state X用于下行传输/接收，则考虑先前指示的用于下行传输/接收的TCI状态与TCI state X不同；如果TCI state X用于上行传输以及下行传输/接收，则考虑先前指示的用于上行传输以及下行传输/接收的TCI状态与TCI state X不同。
需要说明的是，在系统中，一般会有多次第一指示信息指示。在上面方案中提到的“先前指示的”，可以理解为在先前的第一指示信息指示的，例如前面最近一次第一指示信息指示的。
可选地，BeamAppTime根据终端设备能力上报确定，或者BeamAppTime由网络配置确定，本申请实施例对比不做限制。
需要说明的是，对于PDCCH重复传输，或者终端设备在多个搜索空间接收(receive)或检测(monitor)候选PDCCH时，使用不同的TCI state进行接收或检测也需要考虑类似的时序要求(requirement for timing)。
需要说明的是，以上第一MAC CE信令结构仅仅是一个示意，不同信息域的位置可以调整，同时上述第一MAC CE信令中的一些信息可以是可选的，也就是说，第一MAC CE信令中可以不包括以上部分信息。
本申请实施例中，网络设备发送的第二指示信息可以指示多个可用(激活)的TCI状态，第一指示信息可以指示多个可用(激活)的TCI状态中使用的(applied)N个TCI状态。相应的，终端设备可以根据第一指示信息和第二指示信息确定N个TCI状态。
可选地，N个TCI状态中的至少部分用于确定/指示下行操作/传输/接收对应的QCL信息。
可选的，N个TCI状态可以包括用于下行操作/传输/接收的第一TCI状态，和/或，用于上行传输/发送的第二TCI状态。其中，第一TCI状态的数量可以为K1，第二TCI状态的数量可以为K2。其中，0<＝K1<＝N,0<＝K2<＝N。例如，N＝K1＝K2，N＝K1，K2＝0，或者其他组合，本申请实施例对此不做限制。
可选地，在一些实施例中，K1个第一TCI状态可以用于指示多个搜索空间中至少一个搜索空间对应的候选PDCCH的QCL信息(或者QCL假设)。相应的，终端设备可以根据K1个第一TCI状态，确定用于第一PDCCH传输的多个搜索空间分别对应的候选PDCCH的QCL信息(或者QCL假设)，或者终端设备根据K1个第一TCI状态确定多个搜索空间分别对应的候选PDCCH DMRS的QCL信息(或者QCL假设)。
应理解，针对某个搜索空间来确定QCL信息，可以增加更多的灵活性，例如同一个CORESET对应多个搜索空间，这多个搜索空间中的至少部分搜索空间对应的候选PDCCH可以使用不同的QCL信息。
示例性的，K1个第一TCI状态包括第一TCI状态1和第一TCI状态2，其中，第一搜索空间和第二搜索空间关联，且第一搜索空间和第二搜索空间用于第一PDCCH重复传输。具体地，第一搜索空间对应的候选PDCCH/PDCCH DMRS的QCL信息可以根据第一TCI状态1确定，和/或，第二搜索空间对应的候选PDCCH/PDCCH DMRS的QCL信息根据第一TCI状态2确定。
可选的，在另一些实施例中，K1个第一TCI状态用于指示多个CORESET中至少一个CORESET对应的候选PDCCH的QCL信息。相应的，终端设备根据K1个第一TCI状态，确定多个CORESET对应的候选PDCCH的QCL信息(或者QCL假设)，或者终端设备根据K1个第一TCI状态，确定多个CORESET对应的候选PDCCH DMRS的QCL信息(QCL假设)。
应理解，同一个CORESET对应多个搜索空间，多个搜索空间对应的PDCCH可以使用相同的QCL信息。针对某个CORESET来确定QCL信息和现有机制保持类似原理，可以降低实现复杂度。
示例性的，K1个第一TCI状态包括第一TCI状态1和第一TCI状态2，其中，第一搜索空间和第二搜索空间用于第一PDCCH重复传输，且第一搜索空间与第一CORESET对应，第二搜索空间与第二CORESET对应。具体地，第一CORESET对应的候选PDCCH/PDCCH DMRS的QCL信息根据第一TCI状态1确定，和/或，第二CORESET对应的候选PDCCH/PDCCH DMRS的QCL信息根据第一TCI状态2确定。
以下详细介绍第一PDCCH的传输方式。
在一些实施例中，参考图6所示，在至少一个第一TCI状态的数量包括一个(即K1＝1)的情况下，步骤320中终端设备基于至少一个第一TCI状态，接收第一PDCCH，可以通过以下方式实现：
步骤3201、终端设备通过第一搜索空间对应的候选PDCCH接收第一PDCCH，第一搜索空间对应的候选PDCCH的QCL信息通过第一TCI状态确定，第一搜索空间为所述多个搜索空间中的任一搜索空间。
应理解，在配置了单个第一TCI状态的情况下，终端设备可以仅接收一个候选PDCCH，根据该单个第一TCI状态确定候选PDCCH/PDCCH DMRS的QCL信息。如此，降低终端设备的处理复杂度，节约终端设备的能耗。
可选地，第一搜索空间根据以下任意一项确定：
第一搜索空间是多个搜索空间中标识为第一指定标识的搜索空间；
第一搜索空间是多个控制资源集中标识为第二指定标识的控制资源集对应的搜索空间；多个控制资源集与多个搜索空间对应；
第一搜索空间根据网络设备发送的第三指示信息确定。
应理解，第一搜索空间可以是根据预定义规则确定的，也可以是网络配置的。
可选地，第一指定标识为多个搜索空间的标识中最小的标识，或者，多个搜索空间的标识中最大的标识；第一指定标识也可以是多个搜索空间的标识中第二小的标识，或者第二大的标识，本申请实施例对此不做限制。
可选地，第二指定标识为多个控制资源集的标识中最小的标识，或者多个控制资源集的标识中最大的标识，第二指定标识也可以是多个控制资源集的标识中第二小的标识，或者第二大的标识，本申请实施例对此不做限制。
也就是说，第一搜索空间可以是多个搜索空间中标识最小(或最大)的搜索空间，第一搜索空间也可以是多个控制资源集中标识最小(或最大)的控制资源集对应的搜索空间。
本申请实施例中，可以根据搜索空间的标识确定第一搜索空间，也可以根据控制资源集的标识确定第一搜索空间，本申请实施例对此不做限制。
应理解，通过预定义规则确定第一搜索空间，可以有效降低终端设备和网络设备的实现复杂度。
本申请实施例中，第一搜索空间还可以是网络设备通过第三指示信息配置的。
可选地，第三指示信息可以通过RRC信令，或MAC CE信令携带。其中，通过RRC信令携带可以提高传输可靠性，通过MAC CE信令携带可以提高灵活性。需要说明的是，第三指示信息可以与上述第一指示信息和/或第二指示信息为同一信息，第三指示信息也可以是与第一指示信息和第二指示信息不同的信息，本申请实施例对此不作限制。
可选地，若第三指示信息通过RRC信令传输，则第三指示信息可以是针对终端设备配置、或者针对服务小区配置，或者针对服务小区组(Serving cell group)配置，或者针对BWP配置，或者针对CORESET配置，或者针对搜索空间配置，或者针对相互关联的一组搜索空间配置的(这里的一组搜索空间可以包括上文中用于PDCCH重复传输的多个搜索空间)，本申请实施例对此不做限制。
可选地，若第三指示信息通过MAC CE信令传输，则第三指示信息可以针对一个服务小区列表(a list of serving cell，这个列表可以由网络设备配置)配置，针对服务小区配置，针对BWP配置，针对CORESET配置，针对搜索空间配置的，或者针对相互关联的一组搜索空间配置，本申请实施例对此不做限制。需要说明的是，由于传输第三指示信息的信令不同，配置的对象也或有所不同。
可选地，第三指示信息用于指示以下任意一项：
第一搜索空间的标识(search space ID)；
第一搜索空间对应的控制资源集的标识(CORESET ID)；
第一搜索空间是多个搜索空间中标识为第一指定标识的搜索空间；
第一搜索空间是多个控制资源集中标识为第二指定标识的控制资源集对应的搜索空间。
可以理解的是，网络设备可以直接通过第一搜索空间的search space ID，指示第一搜索空间。网络设备也可以通过第一搜索空间对应的CORESET ID，指示第一搜索空间。若第三指示信息指示的CORESET ID与多个搜索空间对应，则将搜索空间标识最小/最大的那个搜索空间作为第一搜索空间。
网络设备还可以通过第三指示信息指示第一搜索空间为多个搜索空间中指定的搜索空间，或者控制资源集中指定的控制资源集对应的搜索空间。其中，第三指示信息可以包括多个指示值，不同的指示值可以指示不同的搜索空间；另外，网络设备也可以通过配置第三指示信息或不配置第三指示信息，来指示不同的搜索空间。本申请实施例对指定搜搜空间的配置方式不做限制。
示例性的，用于重复传输第一PDCCH的搜索空间包括搜索空间1和搜索空间2，其中，搜索空间1与CORESET1对应，搜索空间2与CORESET2对应。网络设备配置单个第一TCI状态的情况下，可以通过以下方式确定第一搜索空间：
方式A1、第一搜索空间为搜索空间1和搜索空间2中搜索空间标识(search space ID)最小的搜索空间。如果搜索空间1的ID(为了简洁，下文中使用SS-ID1表征搜索空间1的ID)小于搜索空间1的ID(为了简洁，下文中使用SS-ID2表征搜索空间2的ID)，那么第一搜索空间是搜索空间1，如果SS-ID2<SS-ID1，那么第一搜索空间是搜索空间2。
方式A2、第一搜索空间是搜索空间1和搜索空间2中搜索空间标识(search space ID)最大的搜索空间。如果SS-ID1>SS-ID2，那么第一搜索空间是搜索空间1，如果SS-ID2>SS-ID1，那么第一搜索空间是搜索空间2。
方式A3、第一搜索空间是CORESET1和CORESET2中CORESET标识(CORESET ID)最小的CORESET对应的搜索空间。如果CORESET1的标识(为了简洁，下文中使用C-ID1表征CORESET1的标识)小于CORESET2的标识(为了简洁，下文中使用C-ID2表征CORESET2的标识)，那么第一搜索空间是CORESET1对应的搜索空间1；如果C-ID2<C-ID1，那么第一搜索空间是CORESET2对应的搜索空间2。
方式A4、第一搜索空间是CORESET1和第二CORESET2中CORESET标识(CORESET ID)最大的CORESET对应的搜索空间。如果C-ID1>C-ID2，那么第一搜索空间是CORESET1对应的搜索空间1；如果C-ID2>C-ID1，那么第一搜索空间是CORESET2对应的搜索空间2。
方式A5、第一搜索空间根据网络设备发送的第三指示信息确定。
可选地，第三指示信息取值为a1(例如0或1)时，终端设备根据方式A1确定第一搜索空间，第三指示信息取值为a2(例如1或0)时，终端设备根据方式A2确定第一搜索空间。
可选地，网络设备配置或指示第三指示信息时，终端设备根据方式A1确定第一搜索空间，网络设备没有配置或指示第三指示信息时，终端设备根据方式A2确定第一搜索空间。或者，反过来，网络设备配置或指示第三指示信息时，终端设备根据方式A2确定第一搜索空间，网络设备没有配置或指示第三指示信息时，终端设备根据方式A1确定第一搜索空间。与第三指示信息直接指示a1和a2的方式相比，通过配置或不配置第三指示信息来指示不同的第一搜索空间可以降低信令开销。
可选地，第三指示信息取值为a3(例如0或1)时，终端设备根据方式A3确定第一搜索空间，第三指示信息取值为a4(例如1或0)时，终端设备根据方式A4确定第一搜索空间。
可选地，网络设备配置或指示第三指示信息时，终端设备根据方式A3确定第一搜索空间，网络设备没有配置或指示第三指示信息时，终端设备根据方式A4确定第一搜索空间。或者，反过来，网络设备配置或指示第三指示信息时，终端设备根据方式A4确定第一搜索空间，网络设备没有配置或指示第三指示信息时，终端设备根据方式A3确定第一搜索空间。与直接指示a3和a4的方式相比，通过配置或不配置第三指示信息来指示不同的第一搜索空间可以降低信令开销。
可选地，第三指示信息取值为a5(例如0或1)时，终端设备根据方式A1确定第一搜索空间，第三指示信息取值为a6(例如1或0)时，终端设备根据方式A3确定第一搜索空间。
可选地，网络设备配置或指示第三指示信息时，终端设备根据方式A1确定第一搜索空间，网络设备没有配置或指示第三指示信息时，终端设备根据方式A3确定第一搜索空间。或者，反过来，网络设备配置或指示第三指示信息时，终端设备根据方式A3确定第一搜索空间，网络设备没有配置或指示第三指示信息时，终端设备根据方式A1确定第一搜索空间。与直接指示a5和a6的方式相比，通过配置或不配置第三指示信息来指示不同的第一搜索空间可以降低信令开销。
可选地，第三指示信息取值为a7(例如0或1)时，终端设备根据方式A2确定第一搜索空间，第三指示信息指示取值为a8(例如1或0)时，终端设备根据方式A4确定第一搜索空间。
可选地，网络设备配置或指示第三指示信息时，终端设备根据方式A2确定第一搜索空间，网络设备没有配置或指示第三指示信息时，终端设备根据方式A4确定第一搜索空间。或者，反过来，网络设备配置或指示第三指示信息时，终端设备根据方式A4确定第一搜索空间，网络设备没有配置或指示第三指示信息时，终端设备根据方式A2确定第一搜索空间。与直接指示a7和a8的方式相比，通过配置或不配置第三指示信息来指示不同的第一搜索空间可以降低信令开销。
在一些实施例中，参考图7所示，在至少一个第一TCI状态的数量包括一个的情况下，步骤320中终端设备基于至少一个第一TCI状态，接收第一PDCCH，还可以通过以下方式实现：
步骤3202、终端设备通过多个搜索空间分别对应的候选PDCCH接收第一PDCCH，其中，多个搜索空间中每个搜索空间对应的候选PDCCH的QCL信息，通过第一TCI状态确定。
应理解，即使网络设备仅指示单个第一TCI状态，仍然支持PDCCH的重复传输。即，终端设备可以在多个搜索空间分别接收/检测每个搜索空间对应的候选PDCCH。并且，终端设备根据该单个第一TCI状态，确定多个搜索空间中的候选PDCCH/PDCCH DMRS的QCL信息。如此，提高PDCCH传输的可靠性。
可选地，终端设备采用步骤3201的方式进行第一PDCCH接收/检测，还是采用步骤3202的方式进行第一PDCCH接收/检测，可以是预定义也可以是网络设备配置的。
在一些实施例中，至少一个第一TCI状态的数量包括一个，还可以包括以下步骤：
终端设备接收网络设备发送的第四指示信息，第四指示信息用于终端设备通过第一搜索空间对应的候选PDCCH接收第一PDCCH，或者，终端设备通过多个搜索空间分别对应的候选PDCCH接收所述第一PDCCH，第一搜索空间为多个搜索空间中的任意一个。
应理解，通过第四指示信息确定是否采用PDCCH重复传输，与上述步骤3201和步骤3202中采用预定义规则确定是否采用PDCCH的方式相比，可以提高系统灵活性，为网络优化配置和传输提供更大自由度。
可选地，第四指示信息通过RRC信令，或者MAC CE信令携带，通过RRC信令携带可以提高传输可靠性，通过MAC CE信令携带可以提高灵活性。需要说明的是，第四指示信息可以与上述第一指示信息、第二指示信息、以及第三指示信息中的至少一个为同一信息，第四指示信息也可以是与上述三种信息不同的信息，本申请实施例对此不做限制。
可选地，若第四指示信息通过RRC信令传输，则第四指示信息可以是针对终端设备配置的、或者针对服务小区配置的，或者针对服务小区组(Serving cell group)配置的，或者针对BWP配置，或者针对CORESET配置，或者针对搜索空间配置，或者针对相互关联的一组搜索空间配置的(这里的一组搜索空间可以包括上文中用于PDCCH重复传输的多个搜索空间)，本申请实施例对此不做限制。
可选地，若第四指示信息通过MAC CE信令传输，则第四指示信息可以针对一个服务小区列表(a list of serving cell，这个列表可以由网络设备配置)配置，针对服务小区配置，针对BWP配置，针对CORESET配置，针对搜索空间配置的，或者针对相互关联的一组搜索空间配置。需要说明的是，由于传输第四指示信息的信令不同，配置的对象也或有所不同。
可选地，在第四指示信息的取值为第一值的情况下，终端设备通过第一搜索空间对应的候选PDCCH接收第一PDCCH，在第四指示信息的取值为第二值的情况下，终端设备通过多个搜索空间分别对应的候选PDCCH接收第一PDCCH。
可选地，在网络设备配置第四指示信息的情况下，终端设备通过第一搜索空间对应的候选PDCCH接收第一PDCCH，且在网络设备没有配置第四指示信息的情况下，终端设备通过多个搜索空间分别对应的候选PDCCH接收所述第一PDCCH；
或者，
在网络设备没有配置第四指示信息的情况下，终端设备通过第一搜索空间对应的候选PDCCH接收第一PDCCH，且在网络设备配置第四指示信息的情况下，终端设备通过多个搜索空间分别对应的候选PDCCH接收第一PDCCH。
需要说明的是，第一搜索空间的确定方式与上述实施例中的确定方式相同，为了简洁，此处不再赘述。
在一些实施例中，参考图8所示，在至少一个第一TCI状态的数量包括多个(即K1>1)的情况下，步骤3202中终端设备基于至少一个第一TCI状态，接收第一PDCCH，可以通过以下方式实现：
步骤3203、终端设备通过多个候选PDCCH接收第一PDCCH，多个候选PDCCH的QCL信息通过多个第一TCI状态确定。
应理解，在配置了多个第一TCI状态的情况下，终端设备可以接收/检测多个搜索空间中的候选PDCCH，并且终端设备可以根据网络配置的多个第一TCI状态，确定多个候选PDCCH/PDCCH DMRS的QCL信息。
本申请实施例中，终端设备可以根据多个候选PDCCH和多个第一TCI状态之间的对应关系，确定每个候选PDCCH/PDCCH DMRS的QCL信息。
可选地，多个候选PDCCH和网络设备配置的多个第一TCI状态之间的对应关系可以通过以下任意一项确定：
终端设备根据多个搜索空间的标识的大小顺序，与多个第一TCI状态的标识的大小顺序，确定多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
终端设备根据多个搜索空间的标识的大小顺序，与多个第一TCI状态在第二指示信息中的位置，确定多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
终端设备根据多个控制资源集的标识的大小顺序，与多个第一TCI状态的标识的大小顺序，确定多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态；
终端设备根据多个控制资源集的标识的大小顺序，与多个第一TCI状态在第二指示信息中的位置，确定多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态；
终端设备根据网络设备发送的第五指示信息，确定多个候选PDCCH与多个第一TCI状态之间的对应关系；
终端设备根据网络设备发送的多个第六指示信息，多个第六指示信息与多个候选PDCCH关联，分别确定多个候选PDCCH对应的第一TCI状态。
应理解，终端设备可根据预定义规则确定每个候选PDCCH与网络配置的多个第一TCI状态之间的对应关系。
可选地，终端设备可以根据多个搜索空间的标识的大小顺序，与多个第一TCI状态的标识的大小顺序，确定多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态。示例性的，search space ID最小的搜索空间与标识最小的第一TCI状态对应，search space ID第二小的搜索空间与标识第二小的第一TCI状态对应，以此类推，search space ID最大的搜索空间与标识最大的第一TCI状态对应。或者，search space ID最大的搜索空间与标识最小的第一TCI状态对应，search space ID第二大的搜索空间与标识第二小的第一TCI状态对应，以此类推，search space ID最大的搜索空间与标识最小的第一TCI状态对应。
可选地，终端设备可以根据多个搜索空间的标识的大小顺序，与多个第一TCI状态在第二指示信息中的位置，确定多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态。应理解，第二指示信息可以通过第一MAC CE信令传输，参考图4或图5所示的第一MAC CE的结构组成示意图，不同的TCI状态在第一MAC CE信令中的位置不同。终端设备可以根据网络设备配置的第一TCI状态在第二指示信息和第一MAC CE信令中的位置，确定该第一TCI状态对应的搜索空间。
示例性的，search space ID最小搜索空间与第二指示信息中位置最靠前的第一TCI状态对应，search space ID第二小的搜索空间与第二指示信息中位置排列在第二的第一TCI状态对应，以此类推，search space ID最大的搜索空间与第二指示信息中位置排列在最后的第一TCI状态对应。或者，search space ID最大搜索空间与第二指示信息中位置最靠前的第一TCI状态对应，search space ID第二大的搜索空间与第二指示信息中位置排列在第二的第一TCI状态对应，以此类推，search space ID最小的搜索空间与第二指示信息中位置排列在最后的第一TCI状态对应。
可选地，终端设备可以根据多个控制资源集的标识的大小顺序，与多个第一TCI状态的标识的大小顺序，确定多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态。示例性的，CORESET ID最小的控制资源集对应搜索空间与标识最小的第一TCI状态对应，CORESET ID第二小的控制资源集对应的搜索空间与标识第二小的第一TCI状态对应，以此类推，CORESET ID最大的控制资源集对应的搜索空间与标识最大的第一TCI状态对应。或者，CORESET ID最大的控制资源集对应的搜索空间与标识最小的第一TCI状态对应，CORESET ID第二大的控制资源集对应的搜索空间与标识第二小的第一TCI状态对应，以此类推，CORESET ID最小的控制资源集对应的搜索空间与标识最大的第一TCI状态对应。
可选地，终端设备根据多个控制资源集的标识的大小顺序，与多个第一TCI状态在第二指示信息中的位置，确定多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态。示例性 的，CORESET ID最小的控制资源集对应的搜索空间与第二指示信息中位置最靠前的第一TCI状态对应，CORESET ID第二小的控制资源集对应的搜索空间与第二指示信息中位置排列在第二的第一TCI状态对应，以此类推，CORESET ID最大的控制资源集对应的搜索空间与第二指示信息中位置排列在最后的第一TCI状态对应。或者，CORESET ID最大控制资源集对应的搜索空间与第二指示信息中位置最靠前的第一TCI状态对应，CORESET ID第二大的控制资源集对应的搜索空间与第二指示信息中位置排列在第二的第一TCI状态对应，以此类推，CORESET ID最小的控制资源集对应的搜索空间与第二指示信息中位置排列在最后的第一TCI状态对应。
应理解，以上通过预定义规则确定多个候选PDCCH和多个第一TCI状态之间的对应关系，可以有效地降低终端设备和网络设备的实现复杂度，以及两者之间的信令开销。
可选地，终端设备还可以根据网络设备发送的第五指示信息，确定多个候选PDCCH与多个第一TCI状态之间的对应关系。
可选地，第五指示信息可以用于指示以下任意一项：
终端设备根据多个搜索空间的标识的大小顺序，与多个第一TCI状态的标识的大小顺序，确定多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
终端设备根据多个搜索空间的标识的大小顺序，与多个第一TCI状态在第二指示信息中的位置，确定多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
终端设备根据多个控制资源集的标识的大小顺序，与多个第一TCI状态的标识的大小顺序，确定多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态；
终端设备根据多个控制资源集的标识的大小顺序，与多个第一TCI状态在第二指示信息中的位置，确定多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态。
可选地，第五指示信息可以包括多个指示值，不同的指示值可以指示不同的候选PDCCH和第一TCI状态对应关系，另外，网络设备也可以通过配置第五指示信息或不配置第五指示信息，来指示不同的候选PDCCH和第一TCI状态对应关系。
需要说明的是，终端设备根据第五指示信息确定多个候选PDCCH与多个第一TCI状态之间的对应关系可以与上述实施例中描述方式相同，为了简洁，此处不再赘述。
可选地，第五指示信息可以通过RRC信令，或者MAC CE信令携带。需要说明的是，第五指示信息与上述第一指示信息至第四指示信息中的至少一个指示信息为同一指示信息，第五指示信息也可以与上述第一指示信息至第四指示信息不同的指示信息，本申请实施例对此不做限制。
可选地，若第五指示信息通过RRC信令传输，则第五指示信息可以是针对终端设备配置的、或者针对服务小区配置的，或者针对服务小区组(Serving cell group)配置的，或者针对BWP配置，或者针对CORESET配置，或者针对搜索空间配置，或者针对相互关联的一组搜索空间配置的(这里的一组搜索空间可以包括上文中用于PDCCH重复传输的多个搜索空间)，本申请实施例对此不做限制。
可选地，若第五指示信息通过MAC CE信令传输，则第五指示信息可以针对一个服务小区列表(a list of serving cell，这个列表可以由网络设备配置)配置，针对服务小区配置，针对BWP配置，针对CORESET配置，针对搜索空间配置的，或者针对相互关联的一组搜索空间配置。需要说明的是，由于传输第四指示信息的信令不同，配置的对象也或有所不同。
应理解，网络设备通过单个第五指示信息指示多个候选PDCCH和多个第一TCI状态之间的对应关系，可以提高系统灵活性，为网络优化配置和传输提供更大自由度。
另外，可选地，终端设备还可以接收网络设备发送的多个第六指示信息，其中，多个第六指示信息与多个候选PDCCH关联，终端设备可以根据每个候选PDCCH关联的第六指示信息确定该候选PDCCH对应的第一TCI状态。
可选地，每个第六指示信息通过与其关联的PDCCH的搜索空间的配置信息携带，或者，通过与其关联的PDCCH的搜索空间所对应的控制资源集的配置信息携带。
应理解，上述多个第六指示信息可以与多个搜索空间关联，进而与多个搜索空间中的候选PDCCH关联。第六指示信息也可以与多个控制资源集关联，进而与多个控制资源集中的候选PDCCH关联。也就是说，网络设备可以为每个控制资源集或者搜索空间配置一个独立的指示信息，以指示每个控制资源集或者搜索空间的候选PDCCH/PDCCH DMRS对应的第一TCI状态，这样，网络设备可以更灵活地控制每个控制资源集或者搜索空间对应的统一TCI状态。
可选地，上述多个第六指示信息中每个第六指示信息用于指示以下任意一项：
与第六指示信息关联的候选PDCCH对应的第一TCI状态的标识；
与第六指示信息关联的候选PDCCH对应的第一TCI状态是标识为第三指定标识的第一TCI状态；
与第六指示信息关联的候选PDCCH对应的第一TCI状态在第二指示信息中的位置；
与第六指示信息关联的候选PDCCH对应的第一TCI状态是第二指示信息中位于指定位置的第一TCI状态；
与第六指示信息关联的候选PDCCH对应的第一TCI状态所属的TCI状态集合。
可选地，第三指定标识可以是多个第一TCI状态的标识中最大的标识，或者，多个第一TCI状态的标识中最小的标识，第三指定标识还可以是多个第一TCI状态的标识中第二大或第二小的标识，本申请实施例对此不做限制。也就是说，第六指示信息可以指示当前候选PDCCH对应的第一TCI状态为多个TCI状态中标识最大的第一TCI状态，第六指示信息也可以指示当前候选PDCCH对应的第一TCI状态为多个TCI状态中标识最小的第一TCI状态。
可选地，指定位置可以是在第二指示信息中最前的位置，也可以是在第二指示信息最后的位置，本申请实施例对此不做限制。也就是说，第六指示信息可以指示当前候选PDCCH对应的第一TCI状态为第二指示信息中位置最前的第一TCI状态，第六指示信息也可以指示当前候选PDCCH对应的第一TCI状态为第二指示信息中位置最后的第一TCI状态。
可选地，TCI状态集合的数量包括多个。多个TCI状态集合可以是网络设备配置的，也可以是根据预定义规则确定的，本申请实施例对此不做限制。
可选地，网络设备可以把第一TCI状态组中的TCI状态划分为多个TCI状态集合。具体地，网络设备可以每个TCI状态的配置信息中包含集合指示信息，该集合指示信息用于指示每个TCI状态所属的TCI状态集合。可以理解的是，网络设备可以通过第六指示信息指示当前的候选PDCCH对应的第一TCI状态，是多个第一TCI状态中属于指示的TCI状态集合中的第一TCI状态。
可选地，第六指示信息可以包括多个指示值，不同的指示值可以指示与该第六指示信息关联的候选PDCCH对应的不同的第一TCI状态，另外，网络设备也可以通过为候选PDCCH配置第六指示信息或不配置第六指示信息，来指示与该第六指示信息关联的候选PDCCH对应的不同的第一TCI状态。
示例性的，用于重复传输第一PDCCH的搜索空间包括搜索空间1和搜索空间2，其中，搜索空间1与CORESET1对应，搜索空间2与CORESET2对应。网络设备配置2个第一TCI状态，分别为第一TCI状态1和第一TCI状态2。其中，第一TCI状态1对应的ID使用T-ID1表征，第一TCI状态2对应的ID使用T-ID2表征。具体地，终端设备可以通过以下方式确定多个候选PDCCH和多个第一TCI状态之间的对应关系：
方式B1、search space ID最小的搜索空间对应的候选PDCCH与ID最小的第一TCI状态对应，search space ID最大(或第二小)的搜索空间对应的候选PDCCH与ID最大的第一TCI状态对应。若SS-ID1<SS-ID2，T-ID1<T-ID2，则SS-ID1指示的搜索空间对应的候选PDCCH与T-ID1对应的第一TCI状态对应，SS-ID2指示的搜索空间对应的候选PDCCH与T-ID2对应的第一TCI状态对应。
方式B2、earch space ID最大的搜索空间对应的候选PDCCH与ID最小的第一TCI状态对应，search space ID最小(或第二大)的搜索空间对应的候选PDCCH与ID最大的第一TCI状态对应。若SS-ID1>SS-ID2，T-ID1<T-ID2，则SS-ID1指示的搜索空间对应的候选PDCCH与T-ID1对应的第一TCI状态对应，SS-ID2指示的搜索空间对应的候选PDCCH与T-ID2对应的第一TCI状态对应。
方式B3、CORESET ID最小的控制资源集对应的候选PDCCH与ID最小的第一TCI状态对应，CORESET ID最大(或第二小)的控制资源集对应的候选PDCCH与ID最大的第一TCI状态对应。若C-ID1<C-ID2，T-ID1<T-ID2，则C-ID1指示的搜索空间对应的候选PDCCH与T-ID1对应的第一TCI状态对应，C-ID2指示的搜索空间对应的候选PDCCH与T-ID2对应的第一TCI状态对应。
方式B4、CORESET ID最大的控制资源集对应的候选PDCCH与ID最小的第一TCI状态对应，CORESET ID最小(或第二大)的控制资源集对应的候选PDCCH与ID最大的第一TCI状态对应。若C-ID1>C-ID2，T-ID1<T-ID2，则C-ID1指示的搜索空间对应的候选PDCCH与T-ID1对应的第一TCI状态对应，C-ID2指示的搜索空间对应的候选PDCCH与T-ID2对应的第一TCI状态对应。
方式B5、CORESET ID最小的控制资源集对应的候选PDCCH，与第二指示信息中位置靠前的第一TCI状态对应，CORESET ID最大(或第二小)的控制资源集对应的候选PDCCH，与第二指示信息中位置靠后的第一TCI状态对应。
方式B6、CORESET ID最大的控制资源集对应的候选PDCCH，与第二指示信息中位置靠前的第一TCI状态对应，CORESET ID最小(或第二大)的控制资源集对应的候选PDCCH，与第二指示 信息中位置靠后的第一TCI状态对应。
方式B7、search space ID最小的搜索空间对应的候选PDCCH，与第二指示信息中位置靠前的第一TCI状态对应，search space ID最大(或第二小)的搜索空间对应的候选PDCCH，与第二指示信息中位置靠后的第一TCI状态对应。
方式B8、search space ID最大的搜索空间对应的候选PDCCH，与第二指示信息中位置靠前的第一TCI状态对应，search space ID最小(或第二大)的搜索空间对应的候选PDCCH，与第二指示信息中位置靠后的第一TCI状态对应。
方式B9、终端设备根据网络设备发送的第五指示信息，确定每个候选PDCCH对应的第一TCI状态。
可选地，第五指示信息取值为b1(例如0或1)时，终端设备根据方式B1确定每个候选PDCCH对应的第一TCI状态，第五指示信息取值为b2(例如1或0)时，终端设备根据方式B2确定每个候选PDCCH对应的第一TCI状态。
可选地，网络设备配置或指示第五指示信息时，终端设备根据方式B1确定每个候选PDCCH对应的第一TCI状态，网络设备没有配置或指示第五指示信息时，终端设备根据方式B2确定每个候选PDCCH对应的第一TCI状态，反过来，网络设备配置或指示第五指示信息时，终端设备根据方式B2确定每个候选PDCCH对应的第一TCI状态，网络设备没有配置或指示第五指示信息时，终端设备根据方式B1确定每个候选PDCCH对应的第一TCI状态。与第五指示信息直接指示b1和b2的方式相比，通过配置或不配置第五指示信息来指示每个候选PDCCH对应的第一TCI状态可以降低信令开销。
可选地，第五指示信息取值为b3(例如0或1)时，终端设备根据方式B3确定每个候选PDCCH对应的第一TCI状态，第五指示信息取值为b4(例如1或0)时，终端设备根据方式B4确定每个候选PDCCH对应的第一TCI状态。
可选地，网络设备配置或指示第五指示信息时，终端设备根据方式B3确定每个候选PDCCH对应的第一TCI状态，网络设备没有配置或指示第五指示信息时，终端设备根据方式B4确定每个候选PDCCH对应的第一TCI状态，反过来，网络设备配置或指示第五指示信息时，终端设备根据方式B4确定每个候选PDCCH对应的第一TCI状态，网络设备没有配置或指示第五指示信息时，终端设备根据方式B3确定每个候选PDCCH对应的第一TCI状态。与第五指示信息直接指示b3和b4的方式相比，通过配置或不配置第五指示信息来指示每个候选PDCCH对应的第一TCI状态可以降低信令开销。
可选地，第五指示信息取值为b5(例如0或1)时，终端设备根据方式B1确定每个候选PDCCH对应的第一TCI状态，第五指示信息取值为b5(例如1或0)时，终端设备根据方式B3确定每个候选PDCCH对应的第一TCI状态。
可选地，网络设备配置或指示第五指示信息时，终端设备根据方式B1确定每个候选PDCCH对应的第一TCI状态，网络设备没有配置或指示第五指示信息时，终端设备根据方式B3确定每个候选PDCCH对应的第一TCI状态，反过来，网络设备配置或指示第五指示信息时，终端设备根据方式B3确定每个候选PDCCH对应的第一TCI状态，网络设备没有配置或指示第五指示信息时，终端设备根据方式B1确定每个候选PDCCH对应的第一TCI状态。与第五指示信息直接指示b5和b6的方式相比，通过配置或不配置第五指示信息来指示每个候选PDCCH对应的第一TCI状态可以降低信令开销。
可选地，第五指示信息取值为b7(例如0或1)时，终端设备根据方式B2确定每个候选PDCCH对应的第一TCI状态，第五指示信息取值为b8(例如1或0)时，终端设备根据方式B4确定每个候选PDCCH对应的第一TCI状态。
可选地，网络设备配置或指示第五指示信息时，终端设备根据方式B2确定每个候选PDCCH对应的第一TCI状态，网络设备没有配置或指示第五指示信息时，终端设备根据方式B4确定每个候选PDCCH对应的第一TCI状态，反过来，网络设备配置或指示第五指示信息时，终端设备根据方式B4确定每个候选PDCCH对应的第一TCI状态，网络设备没有配置或指示第五指示信息时，终端设备根据方式B2确定每个候选PDCCH对应的第一TCI状态。与第五指示信息直接指示b7和b8的方式相比，通过配置或不配置第五指示信息来指示每个候选PDCCH对应的第一TCI状态可以降低信令开销。
可选地，第五指示信息取值为b9(例如0或1)时，终端设备根据方式B5确定每个候选PDCCH对应的第一TCI状态，第五指示信息取值为b10(例如1或0)时，终端设备根据方式B6确定每个 候选PDCCH对应的第一TCI状态。
可选地，网络设备配置或指示第五指示信息时，终端设备根据方式B5确定每个候选PDCCH对应的第一TCI状态，网络设备没有配置或指示第五指示信息时，终端设备根据方式B6确定每个候选PDCCH对应的第一TCI状态，反过来，网络设备配置或指示第五指示信息时，终端设备根据方式B6确定每个候选PDCCH对应的第一TCI状态，网络设备没有配置或指示第五指示信息时，终端设备根据方式B5确定每个候选PDCCH对应的第一TCI状态。与第五指示信息直接指示b9和b10的方式相比，通过配置或不配置第五指示信息来指示每个候选PDCCH对应的第一TCI状态可以降低信令开销。
方式B10、终端设备根据网络设备发送的两个第六指示信息(分别为第六指示信息1和第六指示信息2)，分别确定搜索空间1的候选PDCCH对应的第一TCI状态，以及搜索空间2的候选PDCCH对应的第一TCI状态。
可选地，网络设备发送的第六指示信息1可以包含在搜索空间1的配置信息中，第六指示信息2可以包含在搜索空间2的配置信息中。
可选地，网络设备发送的第六指示信息1可以包含在搜索空间1对应的控制资源集1的配置信息中，第六指示信息2可以包含在搜索空间2对应的控制资源集2的配置信息中。
可选地，第六指示信息1取值为c1时，搜索空间1的候选PDCCH对应的第一TCI状态为TCI状态A，第六指示信息1取值为c2时，搜索空间1的候选PDCCH对应的第一TCI状态为TCI状态B。
或者，当网络设备配置或指示第六指示信息1时，搜索空间1的候选PDCCH对应的第一TCI状态为TCI状态A，当网络设备没有配置或指示第六指示信息1时，搜索空间1的候选PDCCH对应的第一TCI状态为TCI状态B。
其中，TCI状态A和TCI状态B可以是以下中的任意一项：
TCI状态A为第一TCI状态1和第一TCI状态2中标识最小的第一TCI状态，TCI状态B为第一TCI状态1和第一TCI状态2中标识最大的第一TCI状态；
TCI状态A为第一TCI状态1和第一TCI状态2中标识最大的第一TCI状态，TCI状态B为第一TCI状态1和第一TCI状态2中标识最小的第一TCI状态；
TCI状态A为第一TCI1和第一TCI状态2中在第二指示信息中位置靠前的第一TCI状态，TCI状态B为第一TCI状态1和第一TCI状态2中在第二指示信息中位置靠后的第一TCI状态；
TCI状态A为第一TCI1和第一TCI状态2中在第二指示信息中位置靠后的第一TCI状态，TCI状态B为第一TCI状态1和第一TCI状态2中在第二指示信息中位置靠前的第一TCI状态；
TCI状态A为第一TCI1和第一TCI状态2中属于第一TCI状态集合中的第一TCI状态；TCI状态B为第一TCI1和第一TCI状态2中属于第二TCI状态集合中的第一TCI状态。
其中，第一TCI状态集合和第二TCI状态集合可以根据预定义规则确定，或根据网络配置确定。
示例性的，网络可以把第一TCI状态组中的TCI状态划分为第一TCI状态集合和第二TCI状态集合，可以在TCI状态的配置信息中包含集合指示信息，集合指示信息指示该TCI状态属于第一TCI状态集合还是第二TCI状态集合。
可选地，第六指示信息2与第六指示信息1的指示方式类似，为了简洁，此处不再赘述。
在本申请一实施例中，参考图9所示，所述方法还包括：
步骤300、终端设备向网络设备发送第一能力信息和/或第二能力信息；
第一能力信息用于指示终端设备支持多个统一TCI状态同时用于下行传输(或下行操作/下行接收)，和/或，终端设备支持DCI中的一个码本指示多个用于下行传输的统一TCI状态；第二能力信息用于指示终端设备支持PDCCH的重复传输，和/或，终端设备支持多个搜索空间关联。
应理解，第一能力信息可以指示终端设备支持Z个(Z>1)统一TCI状态同时用于下行传输或者下行接收，或者终端设备支持DCI中“Transmission configuration indication”信息域的一个码本最多可以激活或者指示Z个统一TCI状态用于下行传输或者下行接收。
可选地，Z可以为2，也可以为4，还可以为其他数值，本申请实施例对此不做限制。
另外，第二能力信息可以指示终端设备PDCCH的重复传输，和/或，终端设备支持多个(2个或2个以上)搜索空间关联。
可选地，终端设备可以在步骤310之前向网络设备发送第一能力信息和/或第二能力信息，这样，网络设备可以根据终端设备上报的第一能力信息和/或第二能力信息为终端设备的多TRP/panel/beam的PDCCH重复传输配置统一TCI状态。
可选地，第一能力信息和/或第二能力信息是针对以下任一对象的能力：
终端设备、载波、频段、频段组合、频段组合以及该频段组合中的频段、频段组合以及该频段组合中每个频段的载波、频段范围。
可选地，第一能力信息和/或第二能力信息可以针对频段(band)上报，也就是说，不同的频段可以独立上报对应的第一能力信息和/或第二能力信息。例如，终端设备可以在某个或者某些频段上支持第一能力信息和/或第二能力信息，其他频段上不支持第一能力信息和/或第二能力信息，通过不同的频段独立上报，可以使终端设备实现具有更大的自由度，同时让更多的终端设备支持多TRP/panel/beam的PDCCH重复传输场景中的统一TCI状态配置。
可选地，第一能力信息和/或第二能力信息可以按照频段组合(band combination)独立上报的。例如，终端设备可以在某个频段组合下不上报第一能力信息和/或第二能力信息，但是在另一个频段组合下上报第一能力信息和/或第二能力信息。应理解，不同的频段组合独立上报，可以让终端实现具有更大的自由度，同时让更多的终端设备支持多TRP/panel/beam的PDCCH重复传输场景中的统一TCI状态配置。
可选的，第一能力信息和/或第二能力信息可以按照频段组合(band combination)中的每个频段独立上报的(per band per band combination)，也就是说，不同的频段组合中的频段可以独立上报。例如，终端设备可以在某个CA下不支持第一能力信息和/或第二能力信息，但是在另一个CA组合下某些band上报第一能力信息和/或第二能力信息。应理解，不同的频段组合独立上报，可以让终端实现具有更大的自由度，同时让更多的终端设备支持多TRP/panel/beam的PDCCH重复传输场景中的统一TCI状态配置。
可选地，第一能力信息和/或第二能力信息可以按照频段组合(band combination)中的每个频段上每个载波独立上报的，也就是说，不同的频段组合中的频段中的不同载波CC(per CC per band per band combination，或者FSPC)可以独立上报。应理解，不同的频段组合独立上报，并且一个band上的不同载波也可以独立上报，可以让终端设备实现具有更大的自由度，同时让更多的终端设备支持多TRP/panel/beam的PDCCH重复传输场景中的统一TCI状态配置。
可选的，第一能力信息和/或第二能力信息可以按照频段范围(Frequency range)上报的，也就是说，不同的FR(例如低频FR1和高频FR2)可以独立上报。应理解，不同的FR独立上报，可以让终端实现具有更大的自由度，同时让更多的终端设备支持多TRP/panel/beam的PDCCH重复传输场景中的统一TCI状态配置。
可选的，第一能力信息和/或第二能力信息可以针对终端设备上报的，也就是说，若UE上报第一能力信息和/或第二能力信息，则表征该终端设备在各个频段上都可以支持这个第一能力信息和/或第二能力信息，可以降低终端能力上报的信令开销。
可选地，第一能力信息和第二能力信息可以对应不同的对象进行上报，例如一个是针对band，一个是针对per CC per band per band combination。由于上下行对终端设备的能力要求不同，上下行能力使用不同的选项，可以更有利于终端设备实现。
可选地，第一能力信息和/或第二能力信息可以通过RRC信令，或者MAC CE信令传输。其中，第一能力信息和第二能力信息可以为同一个能力信息，通过一个信令传输，也可以为不同的信息，通过不同的信令传输，本申请实施例对此不做限制。
以上结合附图详细描述了本申请的优选实施方式，但是，本申请并不限于上述实施方式中的具体细节，在本申请的技术构思范围内，可以对本申请的技术方案进行多种简单变型，这些简单变型均属于本申请的保护范围。例如，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合，为了避免不必要的重复，本申请对各种可能的组合方式不再另行说明。又例如，本申请的各种不同的实施方式之间也可以进行任意组合，只要其不违背本申请的思想，其同样应当视为本申请所公开的内容。又例如，在不冲突的前提下，本申请描述的各个实施例和/或各个实施例中的技术特征可以和现有技术任意的相互组合，组合之后得到的技术方案也应落入本申请的保护范围。
还应理解，在本申请的各种方法实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。此外，在本申请实施例中，术语“下行”、“上行”和“侧行”用于表示信号或数据的传输方向，其中，“下行”用于表示信号或数据的传输方向为从站点发送至小区的用户设备的第一方向，“上行”用于表示信号或数据的传输方向为从小区的用户设备发送至站点的第二方向，“侧行”用于表示信号或数据的传输方向为从用户设备1发送至用户设备2的第三方向。例如，“下行信号”表示该信号的 传输方向为第一方向。另外，本申请实施例中，术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系。具体地，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这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
图10是本申请实施例提供的数据传输装置的结构组成示意图一，应用于终端设备，如图10所示，所述数据传输装置包括：
确定单元1001，被配置为确定针对第一PDCCH的至少一个第一TCI状态，其中，所述至少一个第一TCI状态用于指示多个候选PDCCH中至少一个候选PDCCH的QCL信息，所述多个候选PDCCH用于传输/重复传输所述第一PDCCH；
接收单元1002，被配置为基于所述至少一个第一TCI状态，接收所述第一PDCCH。
可选地，接收单元1002，还被配置为接收网络设备发送的第一指示信息；第一指示信息用于指示多个可用的TCI状态中至少一个TCI状态，至少一个TCI状态中包括至少一个第一TCI状态。
可选地，所述接收单元1002，还被配置为接收网络设备发送的第二指示信息；所述第二指示信息用于配置多个可用的TCI状态，所述多个可用的TCI状态包括所述至少一个第一TCI状态。
可选地，多个候选PDCCH分别为多个搜索空间中的候选PDCCH，多个搜索空间之间具有关联关系。
可选地，所述多个搜索空间与多个控制资源集对应。
可选地，所述至少一个第一TCI状态用于指示所述多个搜索空间中至少一个搜索空间对应的候选PDCCH的QCL信息。
可选地，所述至少一个第一TCI状态用于指示所述多个控制资源集中至少一个控制资源集对应的候选PDCCH的QCL信息。
可选地，所述至少一个第一TCI状态的数量包括一个，所述接收单元1002，还被配置为通过第一搜索空间对应的候选PDCCH接收所述第一PDCCH，所述第一搜索空间对应的候选PDCCH的QCL信息通过所述第一TCI状态确定，所述第一搜索空间为所述多个搜索空间中的任一搜索空间。
可选地，所述第一搜索空间根据以下任意一项确定：
第一搜索空间是所述多个搜索空间中标识为第一指定标识的搜索空间；
第一搜索空间是多个控制资源集中标识为第二指定标识的控制资源集对应的搜索空间；所述多个控制资源集与所述多个搜索空间对应；
第一搜索空间根据网络设备发送的第三指示信息确定。
可选地，所述第三指示信息用于指示以下任意一项：
所述第一搜索空间的标识；
所述第一搜索空间对应的控制资源集的标识；
所述第一搜索空间是所述多个搜索空间中标识为第一指定标识的搜索空间；
所述第一搜索空间是所述多个控制资源集中标识为第二指定标识的控制资源集对应的搜索空间。
可选地，第一指定标识为多个搜索空间的标识中最小的标识，或者，多个搜索空间的标识中最大的标识；第二指定标识为多个控制资源集的标识中最小的标识，或者多个控制资源集的标识中最大的标识。
可选地，第三指示信息通过RRC信令，或者MAC CE信令携带。
可选地，至少一个第一TCI状态的数量包括一个，接收单元1002，还被配置为通过多个搜索空间分别对应的候选PDCCH接收第一PDCCH，多个搜索空间中每个搜索空间对应的候选PDCCH的QCL信息通过第一TCI状态确定。
可选地，至少一个第一TCI状态的数量包括一个，接收单元1002，还被配置为接收网络设备发送的第四指示信息，第四指示信息用于终端设备通过第一搜索空间对应的候选PDCCH接收第一PDCCH，或者，终端设备通过多个搜索空间分别对应的候选PDCCH接收第一PDCCH；第一搜索空间为多个搜索空间中的任意一个。
可选地，所述接收单元1002，还配置为以下任意一项：
在所述第四指示信息的取值为第一值的情况下，通过第一搜索空间对应的候选PDCCH接收所述第一PDCCH，所述第一搜索空间对应的候选PDCCH的QCL信息通过所述第一TCI状态确定；
在所述第四指示信息的取值为第二值的情况下，通过所述多个搜索空间分别对应的候选PDCCH接收所述第一PDCCH，所述多个搜索空间中每个搜索空间对应的候选PDCCH的QCL信息，通过所述第一TCI状态确定；
在所述网络设备配置所述第四指示信息的情况下，通过第一搜索空间对应的候选PDCCH接收 所述第一PDCCH，且在所述网络设备未配置所述第四指示信息的情况下，所述终端设备通过所述多个搜索空间分别对应的候选PDCCH接收所述第一PDCCH；
在所述网络设备未配置所述第四指示信息的情况下，通过第一搜索空间对应的候选PDCCH接收所述第一PDCCH，且在所述网络设备配置所述第四指示信息的情况下，所述终端设备通过所述多个搜索空间分别对应的候选PDCCH接收所述第一PDCCH。
可选地，所述第四指示信息通过RRC信令，或者MAC CE信令携带。
可选地，至少一个第一TCI状态的数量包括多个，接收单元1002，还被配置为通过多个候选PDCCH接收第一PDCCH，多个候选PDCCH的QCL信息通过多个第一TCI状态确定。
可选地，确定单元1001，还可以配置为以下任意一项：
根据所述多个搜索空间的标识的大小顺序，与所述多个第一TCI状态的标识的大小顺序，确定所述多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
根据所述多个搜索空间的标识的大小顺序，与所述多个第一TCI状态在所述第二指示信息中的位置，确定所述多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
根据所述多个控制资源集的标识的大小顺序，与所述多个第一TCI状态的标识的大小顺序，确定所述多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态；
根据所述多个控制资源集的标识的大小顺序，与所述多个第一TCI状态在所述第二指示信息中的位置，确定所述多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态；
根据网络设备发送的第五指示信息，确定所述多个候选PDCCH与所述多个第一TCI状态之间的对应关系；
根据网络设备发送的多个第六指示信息，所述多个第六指示信息与所述多个候选PDCCH关联，分别确定所述多个候选PDCCH对应的第一TCI状态。
可选地，第五指示信息用于指示以下任意一项：
终端设备根据所述多个搜索空间的标识的大小顺序，与所述多个第一TCI状态的标识的大小顺序，确定所述多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
终端设备根据所述多个搜索空间的标识的大小顺序，与所述多个第一TCI状态在所述第二指示信息中的位置，确定所述多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
终端设备根据所述多个控制资源集的标识的大小顺序，与所述多个第一TCI状态的标识的大小顺序，确定所述多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态；
终端设备根据多个控制资源集的标识的大小顺序，与多个第一TCI状态在第二指示信息中的位置，确定多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态。
可选地，所述第五指示信息通过RRC信令，或者MAC CE信令携带。
可选地，所述多个第六指示信息中每个第六指示信息用于指示以下任意一项：
与所述第六指示信息关联的候选PDCCH对应的第一TCI状态的标识；
与所述第六指示信息关联的候选PDCCH对应的第一TCI状态是标识为第三指定标识的第一TCI状态；
与所述第六指示信息关联的候选PDCCH对应的第一TCI状态在所述第二指示信息中的位置；
与所述第六指示信息关联的候选PDCCH对应的第一TCI状态是所述第二指示信息中位于指定位置的第一TCI状态；
与所述第六指示信息关联的候选PDCCH对应的第一TCI状态所属的TCI状态集合。
可选地，第三指定标识为多个第一TCI状态的标识中最大的标识，或者，多个第一TCI状态的标识中最小的标识；指定位置为多个第一TCI状态在第二指示信息的位置中最前的位置，或者多个第一TCI状态在第二指示信息的位置中最后的位置。
可选地，所述每个第六指示信息通过与其关联的PDCCH的搜索空间的配置信息携带，或者，通过与其关联的PDCCH的搜索空间所对应的控制资源集的配置信息携带。
可选地，所述第一指示信息通过以下中的任意一项携带：RRC信令、MAC CE信令、DCI。
可选地，所述第二指示信息通过第一MAC CE信令携带。
可选地，所述第一MAC CE信令包括以下中的至少一项：
下行带宽部分指示信息；
上行带宽部分指示信息；
至少一个TCI数量指示信息；所述至少一个TCI数量指示信息中每个TCI数量指示信息用于指示该TCI数量指示信息关联的TCI状态的数量；
至少一个TCI类型指示信息；所述至少一个TCI类型指示信息用于指示所述多个可用的TCI状态的类型；
所述多个可用的TCI状态的配置信息。
可选地，接收单元1002，还配置为接收网络设备发送的第七指示信息，第七指示信息用于指示统一TCI状态的类型为联合TCI状态，至少一个第一TCI状态为联合TCI状态；或者，接收网络设备发送的第八指示信息，第八指示信息用于指示统一TCI状态的类型为独立TCI状态，至少一个第一TCI状态为下行TCI状态。
可选地，所述数据传输装置还包括发送单元，被配置为向网络设备发送第一能力信息和/或第二能力信息；第一能力信息用于指示所述终端设备支持多个统一TCI状态同时用于下行传输，和/或，所述终端设备支持DCI中的一个码本指示多个用于下行传输的统一TCI状态；第二能力信息用于指示终端设备支持PDCCH的重复传输，和/或，终端设备支持多个搜索空间关联。
可选地，第一能力信息和/或第二能力信息是针对以下任一对象的能力：终端设备、载波、频段、频段组合、频段组合以及该频段组合中的频段、频段组合以及该频段组合中每个频段的载波、频段范围。
图11是本申请实施例提供的数据传输装置的结构组成示意图二，应用于网络设备，如图11所示，所述数据传输装置包括：
发送单元1101，被配置为通过多个候选PDCCH中的至少一个候选PDCCH向终端设备传输第一PDCCH，所述多个候选PDCCH用于传输/重复传输所述第一PDCCH，所述至少一个候选PDCCH的QCL信息由针对所述第一PDCCH的至少一个第一TCI状态确定。
可选地，发送单元1101，还被配置为向终端设备发送第一指示信息，第一指示信息用于指示多个可用的TCI状态中至少一个TCI状态，至少一个TCI状态中包括针对第一PDCCH的至少一个第一TCI状态。
可选地，发送单元1101，还被配置为向所述终端设备发送第二指示信息；所述第二指示信息用于配置多个可用的TCI状态，所述多个可用的TCI状态包括所述至少一个第一TCI状态。
可选地，所述多个候选PDCCH分别为多个搜索空间中的候选PDCCH，所述多个搜索空间之间具有关联关系。
可选地，所述多个搜索空间与多个控制资源集对应。
可选地，所述至少一个第一TCI状态用于指示所述多个搜索空间中至少一个搜索空间对应的候选PDCCH的QCL信息。
可选地，所述至少一个第一TCI状态用于指示所述多个控制资源集中至少一个控制资源集对应的候选PDCCH的QCL信息。
可选地，至少一个第一TCI状态的数量包括一个，发送单元1101，还被配置为通过第一搜索空间对应的候选PDCCH发送所述第一PDCCH，第一搜索空间对应的候选PDCCH的QCL信息通过所述第一TCI状态确定，所述第一搜索空间为所述多个搜索空间中的任一搜索空间。
可选地，第一搜索空间根据以下任意一项确定：
所述第一搜索空间是所述多个搜索空间中标识为第一指定标识的搜索空间；
所述第一搜索空间是所述多个控制资源集中标识为第二指定标识的控制资源集对应的搜索空间。
可选地，发送单元1101，还被配置为向终端设备发送第三指示信息，第三指示信息用于指示以下任意一项：
所述第一搜索空间的标识；
所述第一搜索空间对应的控制资源集的标识；
所述第一搜索空间是所述多个搜索空间中标识为第一指定标识的搜索空间；
所述第一搜索空间是所述多个控制资源集中标识为第二指定标识的控制资源集对应的搜索空间。
可选地，第一指定标识为多个搜索空间的标识中最小的标识，或者多个搜索空间的标识中最大的标识；第二指定标识为多个控制资源集的标识中最小的标识，或者多个控制资源集的标识中最大的标识。
可选地，所述第三指示信息通过RRC信令，或者MAC CE信令携带。
可选地，至少一个第一TCI状态的数量包括一个，发送单元1101，还被配置为通过多个搜索空间分别对应的候选PDCCH重复发送第一PDCCH，多个搜索空间中每个搜索空间对应的候选PDCCH的QCL信息通过第一TCI状态确定。
可选地，所述至少一个第一TCI状态的数量包括一个，发送单元1101，还被配置为向终端设备 发送第四指示信息，第四指示信息用于终端设备通过第一搜索空间对应的候选PDCCH接收第一PDCCH，或者，终端设备通过多个搜索空间分别对应的候选PDCCH接收第一PDCCH；其中，所述第一搜索空间为所述多个搜索空间中的任意一个。
可选地，第四指示信息的取值为第一值时，指示终端设备通过第一搜索空间对应的候选PDCCH接收第一PDCCH，所述第一搜索空间对应的候选PDCCH的QCL信息通过第一TCI状态确定；
第四指示信息的取值为第二值时，指示终端设备通过多个搜索空间分别对应的候选PDCCH接收第一PDCCH，多个搜索空间中每个搜索空间对应的候选PDCCH的QCL信息，通过第一TCI状态确定。
可选地，在网络设备配置第四指示信息的情况下，指示终端设备通过第一搜索空间对应的候选PDCCH接收第一PDCCH，且在网络设备未配置第四指示信息的情况下，指示终端设备通过多个搜索空间分别对应的候选PDCCH接收第一PDCCH；
或者，在网络设备未配置第四指示信息的情况下，指示终端设备通过第一搜索空间对应的候选PDCCH接收第一PDCCH，且在网络设备配置第四指示信息的情况下，指示终端设备通过多个搜索空间分别对应的候选PDCCH接收第一PDCCH。
可选地，第四指示信息通过RRC信令，或者MAC CE信令携带。
可选地，至少一个第一TCI状态的数量包括多个，发送单元1101，还被配置为通过多个候选PDCCH重复发送第一PDCCH，多个候选PDCCH的QCL信息通过多个第一TCI状态确定。
可选地，所述多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态，根据所述多个搜索空间的标识的大小顺序，与所述多个第一TCI状态的标识的大小顺序确定；
所述多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态，根据所述多个搜索空间的标识的大小顺序，与所述多个第一TCI状态在所述第二指示信息中的位置确定；
所述多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态，根据所述多个控制资源集的标识的大小顺序，与所述多个第一TCI状态的标识的大小顺序确定；
所述多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态，根据所述多个控制资源集的标识的大小顺序与所述多个第一TCI状态在所述第二指示信息中的位置确定。
可选地，发送单元1101，还被配置为向终端设备发送第五指示信息和/或多个第六指示信息，第五指示信息和/或多个第六指示信息，用于确定多个候选PDCCH与多个第一TCI状态之间的对应关系。
可选地，第五指示信息用于指示以下任意一项：
终端设备根据多个搜索空间的标识的大小顺序，与多个第一TCI状态的标识的大小顺序，确定所述多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
终端设备根据多个搜索空间的标识的大小顺序，与多个第一TCI状态在第二指示信息中的位置，确定多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
终端设备根据多个控制资源集的标识的大小顺序，与多个第一TCI状态的标识的大小顺序，确定多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态；
终端设备根据多个控制资源集的标识的大小顺序，与多个第一TCI状态在第二指示信息中的位置，确定多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态。
可选地，第五指示信息通过RRC信令，或者MAC CE信令携带。
可选地，多个第六指示信息与多个候选PDCCH关联，多个第六指示信息中每个第六指示信息用于指示以下任意一项：
与第六指示信息关联的候选PDCCH对应的第一TCI状态的标识；
与第六指示信息关联的候选PDCCH对应的第一TCI状态是标识为第三指定标识的第一TCI状态；
与第六指示信息关联的候选PDCCH对应的第一TCI状态在第二指示信息中的位置；
与第六指示信息关联的候选PDCCH对应的第一TCI状态是第二指示信息中位于指定位置的第一TCI状态；
与第六指示信息关联的候选PDCCH对应的第一TCI所属的TCI状态集合。
可选地，第三指定标识为多个第一TCI状态的标识中最大的标识，或者，多个第一TCI状态的标识中最小的标识；指定位置为多个第一TCI状态在第二指示信息的位置中最前的位置，或者多个第一TCI状态在第二指示信息的位置中最后的位置。
可选地，每个第六指示信息通过与其关联的PDCCH的搜索空间的配置信息携带，或者，通过 与其关联的PDCCH的搜索空间所对应的控制资源集的配置信息携带。
可选地，第一指示信息通过以下中的任意一项携带：RRC信令、MAC CE信令、DCI。
可选地，所述第二指示信息通过第一MAC CE信令携带。
可选地，所述第一MAC CE信令包括以下中的至少一项：
下行带宽部分指示信息；
上行带宽部分指示信息；
至少一个TCI数量指示信息；所述至少一个TCI数量指示信息中每个TCI数量指示信息用于指示该TCI数量指示信息关联的TCI状态的数量；
至少一个TCI类型指示信息；所述至少一个TCI类型指示信息用于指示所述多个可用的TCI状态的类型；
所述多个可用的TCI状态的配置信息。
可选地，发送单元1101，还被配置为向终端设备发送第七指示信息，第七指示信息用于指示统一TCI状态的类型为联合TCI状态，至少一个第一TCI状态为联合TCI状态；或者，向终端设备发送第八指示信息，第八指示信息用于指示统一TCI状态的类型为独立TCI状态，至少一个第一TCI状态为下行TCI状态。
可选地，数据传输装置还包括接收单元，被配置为接收所述终端设备发送的第一能力信息和/或第二能力信息；第一能力信息用于指示终端设备支持多个统一TCI状态同时用于下行传输，和/或，终端设备支持DCI中的一个码本指示多个用于下行传输的统一TCI状态；第二能力信息用于指示终端设备支持PDCCH的重复传输，和/或，终端设备支持多个搜索空间关联。
可选地，第一能力信息和/或所述第二能力信息是针对以下任一对象的能力：终端设备、载波、频段、频段组合、频段组合以及该频段组合中的频段、频段组合以及该频段组合中每个频段的载波、频段范围。
本领域技术人员应当理解，本申请实施例的上述数据传输装置的相关描述可以参照本申请实施例的数据传输方法的相关描述进行理解。
图12是本申请实施例提供的一种通信设备1200示意性结构图。该通信设备可以终端设备，也可以是网络设备。图12所示的通信设备1200包括处理器1210，处理器1210可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图12所示，通信设备1200还可以包括存储器1220。其中，处理器1210可以从存储器1220中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器1220可以是独立于处理器1210的一个单独的器件，也可以集成在处理器1210中。
可选地，如图12所示，通信设备1200还可以包括收发器1230，处理器1210可以控制该收发器1230与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器1230可以包括发射机和接收机。收发器1230还可以进一步包括天线，天线的数量可以为一个或多个。
可选地，该通信设备1200具体可为本申请实施例的网络设备，并且该通信设备1200可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该通信设备1200具体可为本申请实施例的终端设备，并且该通信设备1200可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
图13是本申请实施例的芯片的示意性结构图。图13所示的芯片1300包括处理器1310，处理器1310可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图13所示，芯片1300还可以包括存储器1320。其中，处理器1310可以从存储器1320中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器1320可以是独立于处理器1310的一个单独的器件，也可以集成在处理器1310中。
可选地，该芯片1300还可以包括输入接口1330。其中，处理器1310可以控制该输入接口1330与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
可选地，该芯片1300还可以包括输出接口1340。其中，处理器1310可以控制该输出接口1340与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
可选地，该芯片可应用于本申请实施例中的网络设备，并且该芯片可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该芯片可应用于本申请实施例中的移动终端/终端设备，并且该芯片可以实现本申请实 施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
图14是本申请实施例提供的一种通信系统1400的示意性框图。如图14所示，该通信系统1400包括终端设备1410和网络设备1420。
其中，该终端设备1410可以用于实现上述方法中由终端设备实现的相应的功能，以及该网络设备1420可以用于实现上述方法中由网络设备实现的相应的功能为了简洁，在此不再赘述。
应理解，本申请实施例的处理器可能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、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(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直接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。
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是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(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中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。
本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。
可选的，该计算机可读存储介质可应用于本申请实施例中的网络设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机可读存储介质可应用于本申请实施例中的终端设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。
可选的，该计算机程序产品可应用于本申请实施例中的网络设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。可选地，该计算机程序产品可应用于本申请实施例中的终端设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序。可选的，该计算机程序可应用于本申请实施例中的网络设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。可选地，该计算机程序可应用于本申请实施例中的终端设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤， 能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，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，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，)ROM、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (69)

  1. 一种数据传输方法，所述方法包括：
    终端设备确定针对第一物理下行控制信道PDCCH的至少一个第一传输配置指示TCI状态，其中，所述至少一个第一TCI状态用于指示多个候选PDCCH中至少一个候选PDCCH的准共址QCL信息，所述多个候选PDCCH用于传输/重复传输所述第一PDCCH；
    所述终端设备基于所述至少一个第一TCI状态，接收所述第一PDCCH。
  2. 根据权利要求1所述的方法，其中，所述方法还包括：
    所述终端设备接收网络设备发送的第一指示信息；所述第一指示信息用于指示多个可用的TCI状态中至少一个TCI状态，所述至少一个TCI状态中包括所述至少一个第一TCI状态。
  3. 根据权利要求1或2所述的方法，其中，所述方法还包括：
    所述终端设备接收网络设备发送的第二指示信息；所述第二指示信息用于配置多个可用的TCI状态，所述多个可用的TCI状态包括所述至少一个第一TCI状态。
  4. 根据权利要求1-3任一项所述的方法，其中，所述多个候选PDCCH分别为多个搜索空间中的候选PDCCH，所述多个搜索空间之间具有关联关系。
  5. 根据权利要求4所述的方法，其中，所述多个搜索空间与多个控制资源集对应。
  6. 根据权利要求4或5所述的方法，其中，所述至少一个第一TCI状态用于指示所述多个搜索空间中至少一个搜索空间对应的候选PDCCH的QCL信息。
  7. 根据权利要求5所述的方法，其中，所述至少一个第一TCI状态用于指示所述多个控制资源集中至少一个控制资源集对应的候选PDCCH的QCL信息。
  8. 根据权利要求4-7任一项所述的方法，其中，所述至少一个第一TCI状态的数量包括一个，所述终端设备基于所述至少一个第一TCI状态，接收所述第一PDCCH，包括：
    所述终端设备通过第一搜索空间对应的候选PDCCH接收所述第一PDCCH，所述第一搜索空间对应的候选PDCCH的QCL信息通过所述第一TCI状态确定，所述第一搜索空间为所述多个搜索空间中的任一搜索空间。
  9. 根据权利要求8所述的方法，其中，所述第一搜索空间根据以下任意一项确定：
    所述第一搜索空间是所述多个搜索空间中标识为第一指定标识的搜索空间；
    所述第一搜索空间是多个控制资源集中标识为第二指定标识的控制资源集对应的搜索空间；所述多个控制资源集与所述多个搜索空间对应；
    所述第一搜索空间根据网络设备发送的第三指示信息确定。
  10. 根据权利要求9所述的方法，其中，所述第三指示信息用于指示以下任意一项：
    所述第一搜索空间的标识；
    所述第一搜索空间对应的控制资源集的标识；
    所述第一搜索空间是所述多个搜索空间中标识为第一指定标识的搜索空间；
    所述第一搜索空间是所述多个控制资源集中标识为第二指定标识的控制资源集对应的搜索空间。
  11. 根据权利要求9或10所述的方法，其中，所述第一指定标识为所述多个搜索空间的标识中最小的标识，或者，所述多个搜索空间的标识中最大的标识；
    所述第二指定标识为所述多个控制资源集的标识中最小的标识，或者所述多个控制资源集的标识中最大的标识。
  12. 根据权利要求9-11任一项所述的方法，其中，所述第三指示信息通过无线资源控制RRC信令，或者媒体接入控制单元MAC CE信令携带。
  13. 根据权利要求4-7任一项所述的方法，其中，所述至少一个第一TCI状态的数量包括一个，所述终端设备基于所述至少一个第一TCI状态，接收所述第一PDCCH，包括：
    所述终端设备通过所述多个搜索空间分别对应的候选PDCCH接收所述第一PDCCH，所述多个搜索空间中每个搜索空间对应的候选PDCCH的QCL信息，通过所述第一TCI状态确定。
  14. 根据权利要求4-7任一项所述的方法，其中，所述至少一个第一TCI状态的数量包括一个，所述方法还包括：
    所述终端设备接收网络设备发送的第四指示信息，所述第四指示信息用于所述终端设备通过第一搜索空间对应的候选PDCCH接收所述第一PDCCH，或者，所述终端设备通过所述多个搜索空间 分别对应的候选PDCCH接收所述第一PDCCH；
    所述第一搜索空间为所述多个搜索空间中的任意一个。
  15. 根据权利要求14所述的方法，其中，所述方法还包括：
    在所述第四指示信息的取值为第一值的情况下，所述终端设备通过第一搜索空间对应的候选PDCCH接收所述第一PDCCH，所述第一搜索空间对应的候选PDCCH的QCL信息通过所述第一TCI状态确定；
    在所述第四指示信息的取值为第二值的情况下，所述终端设备通过所述多个搜索空间分别对应的候选PDCCH接收所述第一PDCCH，所述多个搜索空间中每个搜索空间对应的候选PDCCH的QCL信息，通过所述第一TCI状态确定。
  16. 根据权利要求14所述的方法，其中，所述方法还包括：
    在所述网络设备配置所述第四指示信息的情况下，所述终端设备通过第一搜索空间对应的候选PDCCH接收所述第一PDCCH，且在所述网络设备未配置所述第四指示信息的情况下，所述终端设备通过所述多个搜索空间分别对应的候选PDCCH接收所述第一PDCCH；
    或者，
    在所述网络设备未配置所述第四指示信息的情况下，所述终端设备通过第一搜索空间对应的候选PDCCH接收所述第一PDCCH，且在所述网络设备配置所述第四指示信息的情况下，所述终端设备通过所述多个搜索空间分别对应的候选PDCCH接收所述第一PDCCH。
  17. 根据权利要求14-16任一项所述的方法，其中，所述第四指示信息通过无线资源控制RRC信令，或者媒体接入控制单元MAC CE信令携带。
  18. 根据权利要求4-7任一项所述的方法，其中，所述至少一个第一TCI状态的数量包括多个，所述终端设备基于所述至少一个第一TCI状态，接收所述第一PDCCH，包括：
    所述终端设备通过所述多个候选PDCCH接收所述第一PDCCH，所述多个候选PDCCH的QCL信息通过多个第一TCI状态确定。
  19. 根据权利要求18所述的方法，其中，所述方法还包括以下任意一项：
    所述终端设备根据所述多个搜索空间的标识的大小顺序，与所述多个第一TCI状态的标识的大小顺序，确定所述多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
    所述终端设备根据所述多个搜索空间的标识的大小顺序，与所述多个第一TCI状态在所述第二指示信息中的位置，确定所述多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
    所述终端设备根据所述多个控制资源集的标识的大小顺序，与所述多个第一TCI状态的标识的大小顺序，确定所述多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态；
    所述终端设备根据所述多个控制资源集的标识的大小顺序，与所述多个第一TCI状态在所述第二指示信息中的位置，确定所述多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态；
    所述终端设备根据网络设备发送的第五指示信息，确定所述多个候选PDCCH与所述多个第一TCI状态之间的对应关系；
    所述终端设备根据网络设备发送的多个第六指示信息，所述多个第六指示信息与所述多个候选PDCCH关联，分别确定所述多个候选PDCCH对应的第一TCI状态。
  20. 根据权利要求19所述的方法，其中，所述第五指示信息用于指示以下任意一项：
    所述终端设备根据所述多个搜索空间的标识的大小顺序，与所述多个第一TCI状态的标识的大小顺序，确定所述多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
    所述终端设备根据所述多个搜索空间的标识的大小顺序，与所述多个第一TCI状态在所述第二指示信息中的位置，确定所述多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
    所述终端设备根据所述多个控制资源集的标识的大小顺序，与所述多个第一TCI状态的标识的大小顺序，确定所述多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态；
    所述终端设备根据所述多个控制资源集的标识的大小顺序，与所述多个第一TCI状态在所述第二指示信息中的位置，确定所述多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态。
  21. 根据权利要求19或20所述的方法，其中，所述第五指示信息通过RRC信令，或者媒体接入控制单元MAC CE信令携带。
  22. 根据权利要求19-21任一项所述的方法，其中，所述多个第六指示信息中每个第六指示信息用于指示以下任意一项：
    与所述第六指示信息关联的候选PDCCH对应的第一TCI状态的标识；
    与所述第六指示信息关联的候选PDCCH对应的第一TCI状态是标识为第三指定标识的第一TCI状态；
    与所述第六指示信息关联的候选PDCCH对应的第一TCI状态在所述第二指示信息中的位置；
    与所述第六指示信息关联的候选PDCCH对应的第一TCI状态是所述第二指示信息中位于指定位置的第一TCI状态；
    与所述第六指示信息关联的候选PDCCH对应的第一TCI状态所属的TCI状态集合。
  23. 根据权利要求22所述的方法，其中，所述第三指定标识为所述多个第一TCI状态的标识中最大的标识，或者，所述多个第一TCI状态的标识中最小的标识；
    所述指定位置为所述多个第一TCI状态在第二指示信息的位置中最前的位置，或者所述多个第一TCI状态在第二指示信息的位置中最后的位置。
  24. 根据权利要求19-23任一项所述的方法，其中，所述每个第六指示信息通过与其关联的PDCCH的搜索空间的配置信息携带，或者，通过与其关联的PDCCH的搜索空间所对应的控制资源集的配置信息携带。
  25. 根据权利要求2-24任一项所述的方法，其中，所述第一指示信息通过以下中的任意一项携带：
    RRC信令、MAC CE信令、下行控制信息DCI。
  26. 根据权利要求3-25任一项所述的方法，其中，所述第二指示信息通过第一MAC CE信令携带。
  27. 根据权利要求26所述的方法，其中，所述第一MAC CE信令包括以下中的至少一项：
    下行带宽部分指示信息；
    上行带宽部分指示信息；
    至少一个TCI数量指示信息；所述至少一个TCI数量指示信息中每个TCI数量指示信息用于指示该TCI数量指示信息关联的TCI状态的数量；
    至少一个TCI类型指示信息；所述至少一个TCI类型指示信息用于指示所述多个可用的TCI状态的类型；
    所述多个可用的TCI状态的配置信息。
  28. 根据权利要求1-27任一项所述的方法，其中，所述方法还包括：
    所述终端设备接收网络设备发送的第七指示信息，所述第七指示信息用于指示统一TCI状态的类型为联合TCI状态，所述至少一个第一TCI状态为联合TCI状态；
    或者，
    所述终端设备接收网络设备发送的第八指示信息，所述第八指示信息用于指示所述统一TCI状态的类型为独立TCI状态，所述至少一个第一TCI状态为下行TCI状态。
  29. 根据权利要求1-28任一项所述的方法，其中，所述方法还包括：
    所述终端设备向网络设备发送第一能力信息和/或第二能力信息；
    所述第一能力信息用于指示所述终端设备支持多个统一TCI状态同时用于下行传输，和/或，所述终端设备支持DCI中的一个码本指示多个用于下行传输的统一TCI状态；
    所述第二能力信息用于指示所述终端设备支持PDCCH的重复传输，和/或，所述终端设备支持多个搜索空间关联。
  30. 根据权利要求29所述的方法，其中，所述第一能力信息和/或所述第二能力信息是针对以下任一对象的能力：
    所述终端设备；
    载波；
    频段；
    频段组合；
    频段组合，以及该频段组合中的频段；
    频段组合，以及该频段组合中每个频段的载波；
    频段范围。
  31. 一种数据传输方法，所述方法包括：
    网络设备通过多个候选PDCCH中的至少一个候选PDCCH向终端设备传输第一物理下行控制信道PDCCH，所述多个候选PDCCH用于传输/重复传输所述第一PDCCH，所述至少一个候选PDCCH 的准共址QCL信息由针对所述第一PDCCH的至少一个第一传输配置指示TCI状态确定。
  32. 根据权利要求31所述的方法，其中，
    所述网络设备向所述终端设备发送第一指示信息，所述第一指示信息用于指示多个可用的TCI状态中至少一个TCI状态，所述至少一个TCI状态中包括所述针对第一物理下行控制信道PDCCH的至少一个第一TCI状态。
  33. 根据权利要求31或32所述的方法，其中，
    所述网络设备向所述终端设备发送第二指示信息；所述第二指示信息用于配置多个可用的TCI状态，所述多个可用的TCI状态包括所述至少一个第一TCI状态。
  34. 根据权利要求31-33任一项所述的方法，其中，所述多个候选PDCCH分别为多个搜索空间中的候选PDCCH，所述多个搜索空间之间具有关联关系。
  35. 根据权利要求34所述的方法，其中，所述多个搜索空间与多个控制资源集对应。
  36. 根据权利要求34或35所述的方法，其中，所述至少一个第一TCI状态用于指示所述多个搜索空间中至少一个搜索空间对应的候选PDCCH的QCL信息。
  37. 根据权利要求35所述的方法，其中，所述至少一个第一TCI状态用于指示所述多个控制资源集中至少一个控制资源集对应的候选PDCCH的QCL信息。
  38. 根据权利要求34-37任一项所述的方法，其中，所述至少一个第一TCI状态的数量包括一个，所述网络设备通过多个候选PDCCH中的至少一个候选PDCCH向终端设备传输第一物理下行控制信道PDCCH，包括：
    所述网络设备通过第一搜索空间对应的候选PDCCH发送所述第一PDCCH，所述第一搜索空间对应的候选PDCCH的QCL信息通过所述第一TCI状态确定，所述第一搜索空间为所述多个搜索空间中的任一搜索空间。
  39. 根据权利要求38所述的方法，其中，所述第一搜索空间根据以下任意一项确定：
    所述第一搜索空间是所述多个搜索空间中标识为第一指定标识的搜索空间；
    所述第一搜索空间是所述多个控制资源集中标识为第二指定标识的控制资源集对应的搜索空间。
  40. 根据权利要求39所述的方法，其中，还包括：
    所述网络设备向所述终端设备发送第三指示信息，所述第三指示信息用于指示以下任意一项：
    所述第一搜索空间的标识；
    所述第一搜索空间对应的控制资源集的标识；
    所述第一搜索空间是所述多个搜索空间中标识为第一指定标识的搜索空间；
    所述第一搜索空间是所述多个控制资源集中标识为第二指定标识的控制资源集对应的搜索空间。
  41. 根据权利要求39或40所述的方法，其中，所述第一指定标识为所述多个搜索空间的标识中最小的标识，或者，所述多个搜索空间的标识中最大的标识；
    所述第二指定标识为所述多个控制资源集的标识中最小的标识，或者所述多个控制资源集的标识中最大的标识。
  42. 根据权利要求40或41所述的方法，其中，所述第三指示信息通过无线资源控制RRC信令，或者媒体接入控制单元MAC CE信令携带。
  43. 根据权利要求34-37任一项所述的方法，其中，所述至少一个第一TCI状态的数量包括一个，所述网络设备通过多个候选PDCCH中的至少一个候选PDCCH向终端设备传输第一物理下行控制信道PDCCH，包括：
    所述终端设备通过所述多个搜索空间分别对应的候选PDCCH重复发送所述第一PDCCH，所述多个搜索空间中每个搜索空间对应的候选PDCCH的QCL信息，通过所述第一TCI状态确定。
  44. 根据权利要求34-37任一项所述的方法，其中，所述至少一个第一TCI状态的数量包括一个，所述方法还包括：
    所述网络设备向所述终端设备发送第四指示信息，所述第四指示信息用于所述终端设备通过第一搜索空间对应的候选PDCCH接收所述第一PDCCH，或者，所述终端设备通过所述多个搜索空间分别对应的候选PDCCH接收所述第一PDCCH；
    所述第一搜索空间为所述多个搜索空间中的任意一个。
  45. 根据权利要求44所述的方法，其中，所述方法还包括：
    所述第四指示信息的取值为第一值时，指示所述终端设备通过第一搜索空间对应的候选PDCCH接收所述第一PDCCH，所述第一搜索空间对应的候选PDCCH的QCL信息通过所述第一TCI状态确定；
    所述第四指示信息的取值为第二值时，指示所述终端设备通过所述多个搜索空间分别对应的候选PDCCH接收所述第一PDCCH，所述多个搜索空间中每个搜索空间对应的候选PDCCH的QCL信息，通过所述第一TCI状态确定。
  46. 根据权利要求44所述的方法，其中，所述方法还包括：
    在所述网络设备配置所述第四指示信息的情况下，指示所述终端设备通过第一搜索空间对应的候选PDCCH接收所述第一PDCCH，且在所述网络设备未配置所述第四指示信息的情况下，指示所述终端设备通过所述多个搜索空间分别对应的候选PDCCH接收所述第一PDCCH；
    或者，
    在所述网络设备未配置所述第四指示信息的情况下，指示所述终端设备通过第一搜索空间对应的候选PDCCH接收所述第一PDCCH，且在所述网络设备配置所述第四指示信息的情况下，指示所述终端设备通过所述多个搜索空间分别对应的候选PDCCH接收所述第一PDCCH。
  47. 根据权利要求44-46任一项所述的方法，其中，所述第四指示信息通过无线资源控制RRC信令，或者媒体接入控制单元MAC CE信令携带。
  48. 根据权利要求34-37任一项所述的方法，其中，所述至少一个第一TCI状态的数量包括多个，所述网络设备通过多个候选PDCCH中的至少一个候选PDCCH向终端设备传输第一物理下行控制信道PDCCH，包括：
    所述终端设备通过所述多个候选PDCCH重复发送所述第一PDCCH，所述多个候选PDCCH的QCL信息通过多个第一TCI状态确定。
  49. 根据权利要求48所述的方法，其中，所述方法还包括以下任意一项：
    所述多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态，根据所述多个搜索空间的标识的大小顺序，与所述多个第一TCI状态的标识的大小顺序确定；
    所述多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态，根据所述多个搜索空间的标识的大小顺序，与所述多个第一TCI状态在所述第二指示信息中的位置确定；
    所述多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态，根据所述多个控制资源集的标识的大小顺序，与所述多个第一TCI状态的标识的大小顺序确定；
    所述多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态，根据所述多个控制资源集的标识的大小顺序与所述多个第一TCI状态在所述第二指示信息中的位置确定。
  50. 根据权利要求48或49所述的方法，其中，
    所述网络设备向所述终端设备发送第五指示信息和/或多个第六指示信息，所述第五指示信息和/或多个第六指示信息，用于确定所述多个候选PDCCH与所述多个第一TCI状态之间的对应关系。
  51. 根据权利要求50所述的方法，其中，所述第五指示信息用于指示以下任意一项：
    所述终端设备根据所述多个搜索空间的标识的大小顺序，与所述多个第一TCI状态的标识的大小顺序，确定所述多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
    所述终端设备根据所述多个搜索空间的标识的大小顺序，与所述多个第一TCI状态在所述第二指示信息中的位置，确定所述多个搜索空间中每个搜索空间的候选PDCCH对应的第一TCI状态；
    所述终端设备根据所述多个控制资源集的标识的大小顺序，与所述多个第一TCI状态的标识的大小顺序，确定所述多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态；
    所述终端设备根据所述多个控制资源集的标识的大小顺序，与所述多个第一TCI状态在所述第二指示信息中的位置，确定所述多个控制资源集中每个控制资源集的候选PDCCH对应的第一TCI状态。
  52. 根据权利要求50或51所述的方法，其中，所述第五指示信息通过RRC信令，或者媒体接入控制单元MAC CE信令携带。
  53. 根据权利要求50-52任一项所述的方法，其中，所述多个第六指示信息与所述多个候选PDCCH关联，所述多个第六指示信息中每个第六指示信息用于指示以下任意一项：
    与所述第六指示信息关联的候选PDCCH对应的第一TCI状态的标识；
    与所述第六指示信息关联的候选PDCCH对应的第一TCI状态是标识为第三指定标识的第一TCI状态；
    与所述第六指示信息关联的候选PDCCH对应的第一TCI状态在所述第二指示信息中的位置；
    与所述第六指示信息关联的候选PDCCH对应的第一TCI状态是所述第二指示信息中位于指定位置的第一TCI状态；
    与所述第六指示信息关联的候选PDCCH对应的第一TCI所属的TCI状态集合。
  54. 根据权利要求53所述的方法，其中，所述第三指定标识为所述多个第一TCI状态的标识中最大的标识，或者，所述多个第一TCI状态的标识中最小的标识；
    所述指定位置为所述多个第一TCI状态在第二指示信息的位置中最前的位置，或者所述多个第一TCI状态在第二指示信息的位置中最后的位置。
  55. 根据权利要求50-54任一项所述的方法，其中，所述每个第六指示信息通过与其关联的PDCCH的搜索空间的配置信息携带，或者，通过与其关联的PDCCH的搜索空间所对应的控制资源集的配置信息携带。
  56. 根据权利要求32-55任一项所述的方法，其中，所述第一指示信息通过以下中的任意一项携带：
    RRC信令、MAC CE信令、下行控制信息DCI。
  57. 根据权利要求33-56任一项所述的方法，其中，所述第二指示信息通过第一MAC CE信令携带。
  58. 根据权利要求57所述的方法，其中，所述第一MAC CE信令包括以下中的至少一项：
    下行带宽部分指示信息；
    上行带宽部分指示信息；
    至少一个TCI数量指示信息；所述至少一个TCI数量指示信息中每个TCI数量指示信息用于指示该TCI数量指示信息关联的TCI状态的数量；
    至少一个TCI类型指示信息；所述至少一个TCI类型指示信息用于指示所述多个可用的TCI状态的类型；
    所述多个可用的TCI状态的配置信息。
  59. 根据权利要求31-58任一项所述的方法，其中，所述方法还包括：
    所述网络设备向所述终端设备发送第七指示信息，所述第七指示信息用于指示统一TCI状态的类型为联合TCI状态，所述至少一个第一TCI状态为联合TCI状态；
    或者，
    所述网络设备向所述终端设备发送第八指示信息，所述第八指示信息用于指示所述统一TCI状态的类型为独立TCI状态，所述至少一个第一TCI状态为下行TCI状态。
  60. 根据权利要求31-59任一项所述的方法，其中，所述方法还包括：
    所述网络设备接收所述终端设备发送的第一能力信息和/或第二能力信息；
    所述第一能力信息用于指示所述终端设备支持多个统一TCI状态同时用于下行传输，和/或，所述终端设备支持DCI中的一个码本指示多个用于下行传输的统一TCI状态；
    所述第二能力信息用于指示所述终端设备支持PDCCH的重复传输，和/或，所述终端设备支持多个搜索空间关联。
  61. 根据权利要求60所述的方法，其中，所述第一能力信息和/或所述第二能力信息是针对以下任一对象的能力：
    所述终端设备；
    载波；
    频段；
    频段组合；
    频段组合，以及该频段组合中的频段；
    频段组合，以及该频段组合中每个频段的载波；
    频段范围。
  62. 一种数据传输装置，应用于终端设备，包括：
    确定单元，被配置为确定针对第一物理下行控制信道PDCCH的至少一个第一传输配置指示TCI状态，其中，所述至少一个第一TCI状态用于指示多个候选PDCCH中至少一个候选PDCCH的准共址QCL信息，所述多个候选PDCCH用于传输/重复传输所述第一PDCCH；
    接收单元，被配置为基于所述至少一个第一TCI状态，接收所述第一PDCCH。
  63. 一种数据传输装置，应用于网络设备，包括：
    发送单元，被配置为通过多个候选PDCCH中的至少一个候选PDCCH向终端设备传输第一物理下行控制信道PDCCH，所述多个候选PDCCH用于传输/重复传输所述第一PDCCH，所述至少一个候选PDCCH的准共址QCL信息由针对所述第一PDCCH的至少一个第一传输配置指示TCI状态确定。
  64. 一种终端设备，包括：存储器、处理器和收发器，
    所述收发器用于实现与网络设备的通信；
    所述存储器存储有可在处理器上运行的计算机程序，
    所述处理器结合所述收发器执行所述程序时实现权利要求1至30任一项所述方法。
  65. 一种网络设备，包括：存储器、处理器和收发器，
    所述收发器用于实现与终端设备的通信；
    所述存储器存储有可在处理器上运行的计算机程序，
    所述处理器结合所述收发器执行所述程序时实现权利要求31至61任一项所述方法。
  66. 一种计算机存储介质，所述计算机存储介质存储有一个或者多个程序，所述一个或者多个程序可被一个或者多个处理器执行，以实现权利要求1至30，或权利要求31至61任一项所述方法。
  67. 一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至30，或权利要求31至61任一项所述方法。
  68. 一种计算机程序产品，所述计算机程序产品包括计算机存储介质，所述计算机存储介质存储计算机程序，所述计算机程序包括能够由至少一个处理器执行的指令，当所述指令由所述至少一个处理器执行时实现权利要求1至30，或权利要求31至61任一项所述方法。
  69. 一种计算机程序，所述计算机程序使得计算机执行如权利要求1至30，或权利要求31至61任一项所述方法。
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