Communication method, terminal device, and network device

Abstract

The present application provides a communication method, a terminal device, and a network device. The method comprises: a terminal device sends first information to a network device, wherein the first information is used for indicating whether signal or channel transmission is supported when there is no TCI state indication, or the first information is used for indicating whether one or more models used for signal or channel transmission are associated with a TCI state.

Description

Communication methods, terminal equipment and network equipment Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a communication method, terminal equipment, and network equipment. Background Technology

[0002] In communication systems, network devices typically configure corresponding transmission configuration indication (TCI) states for signals or channels to be transmitted, indicating the quasi-co-located (QCL) reference signal corresponding to the target signal or channel. This allows terminal devices to transmit the target signal or channel based on this reference signal. However, in some scenarios, terminal devices can transmit signals or channels without relying on TCI states. In such cases, the TCI states configured by the network device may contain redundant information, resulting in unnecessary downlink signaling overhead. Summary of the Invention

[0003] This application provides a communication method, a terminal device, and a network device. The various aspects covered by this application are described below.

[0004] In a first aspect, a communication method is provided, comprising: a terminal device sending first information to a network device; wherein the first information is used to indicate whether signal or channel transmission is supported without a TCI status indication, or the first information is used to indicate whether one or more models for signal or channel transmission are associated with a TCI status.

[0005] In a second aspect, a communication method is provided, comprising: a network device receiving first information sent by a terminal device; wherein the first information is used to indicate whether signal or channel transmission is supported without a TCI status indication, or the first information is used to indicate whether one or more models for signal or channel transmission are associated with a TCI status.

[0006] Thirdly, a terminal device is provided, comprising: a transmitting unit, configured to transmit first information to a network device; wherein the first information is configured to indicate whether signal or channel transmission is supported without TCI status indication, or the first information is configured to indicate whether one or more models for signal or channel transmission are associated with TCI status.

[0007] Fourthly, a network device is provided, comprising: a receiving unit for receiving first information sent by a terminal device; wherein the first information is used to indicate whether signal or channel transmission is supported without TCI status indication, or the first information is used to indicate whether one or more models for signal or channel transmission are associated with TCI status.

[0008] Fifthly, a terminal device is provided, including a transceiver, a memory, and a processor. The memory is used to store a program, and the processor is used to call the program in the memory and receive or send information through the transceiver, so that the terminal device executes the method of the first aspect.

[0009] In a sixth aspect, a network device is provided, including a transceiver, a memory, and a processor, wherein the memory is used to store a program, and the processor is used to invoke the program in the memory and receive or send information through the transceiver, causing the network device to perform the method as described in the second aspect.

[0010] A seventh aspect provides an apparatus including a processor for calling a program from a memory, causing the apparatus to perform the method as described in the first or second aspect.

[0011] Eighth aspect, a chip is provided, including a processor for calling a program from memory, causing a device having the chip mounted to perform the method as described in the first or second aspect.

[0012] Ninth aspect, a computer-readable storage medium is provided having a program stored thereon, the program causing a computer to perform the methods described in the first or second aspect.

[0013] A tenth aspect provides a computer program product, including a program that causes a computer to perform the method as described in the first or second aspect.

[0014] Eleventhly, a computer program is provided that causes a computer to perform the method as described in the first or second aspect.

[0015] In this embodiment of the application, the terminal device reports (through the first information) whether it supports the transmission of the target signal or channel without TCI status indication, or whether the model used to report the transmission of the target signal or channel is associated with TCI status. Thus, the network device can determine whether it is necessary to configure TCI status for the terminal device based on the terminal device's reporting capability or the model currently used for transmission, thereby saving downlink signaling overhead. Attached Figure Description

[0016] Figure 1 is a system architecture diagram of a communication system applicable to embodiments of this application.

[0017] Figure 2 is a flowchart illustrating the configuration method of the TCI state of the physical downlink shared channel (PDSCH).

[0018] Figure 3 is a flowchart illustrating the communication method provided in an embodiment of this application.

[0019] Figure 4 is a schematic diagram of a terminal device according to an embodiment of this application.

[0020] Figure 5 is a schematic diagram of a network device according to an embodiment of this application.

[0021] Figure 6 is a schematic diagram of the structure of the device provided in the embodiment of this application. Detailed Implementation

[0022] The embodiments of this application can be applied to various communication systems. For example, the embodiments of this application can be applied to Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-A), New Radio (NR), evolution systems of NR, LTE-based access to unlicensed spectrum (LTE-U), NR-based access to unlicensed spectrum (NR-U), Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), and 5th-generation (5G) systems. The embodiments of this application can also be applied to other communication systems, such as future communication systems. This future communication system could be, for example, a sixth-generation mobile communication system or a satellite communication system.

[0023] Traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, communication systems can now support not only traditional cellular communication but also one or more other types of communication. For example, a communication system can support one or more of the following communication methods: device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, and vehicle-to-everything (V2X) communication. The embodiments of this application can also be applied to communication systems that support the above-mentioned communication methods.

[0024] The communication system in this application embodiment can be applied to carrier aggregation (CA) scenarios, dual connectivity (DC) scenarios, and standalone (SA) network deployment scenarios.

[0025] The communication system in this application embodiment can be applied to unlicensed spectrum. This unlicensed spectrum can also be considered a shared spectrum. Alternatively, the communication system in this application embodiment can also be applied to licensed spectrum. This licensed spectrum can also be considered a dedicated spectrum.

[0026] The embodiments of this application can be applied to terrestrial networks (TN) systems as well as non-terrestrial networks (NTN) systems. As an example, the NTN system can include an NR-based NTN system and an Internet of Things (IoT)-based NTN system.

[0027] A communication system may include one or more terminal devices. The terminal devices mentioned in the embodiments of this application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user device, etc.

[0028] In some embodiments, the terminal device may be a station (ST) in a WLAN. In some embodiments, the terminal device may also be a cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA) device, handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal device in a next-generation communication system (e.g., NR system), or terminal device in a future evolved public land mobile network (PLMN) network, etc.

[0029] In some embodiments, the terminal device may be a device that provides voice and / or data connectivity to the user. For example, the terminal device may be a handheld device, an in-vehicle device, etc., with wireless connectivity. As some specific examples, the terminal device may be a mobile phone, tablet, laptop, PDA, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented reality (AR) device, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc.

[0030] In some embodiments, the terminal device may be deployed on land. For example, the terminal device may be deployed indoors or outdoors. In some embodiments, the terminal device may be deployed on water, such as on a ship. In some embodiments, the terminal device may be deployed in the air, such as on an airplane, balloon, or satellite.

[0031] In addition to terminal devices, the communication system may also include one or more network devices. In this embodiment, the network device can be a device for communicating with the terminal device; this network device may also be referred to as an access network device or a radio access network device. For example, the network device may be a base station. In this embodiment, the network device may refer to an access network (RAN) node (or device) that connects the terminal device to the wireless network. Access network equipment can broadly encompass various names listed below, or be interchangeable with them, such as: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master MeNB, secondary SeNB, multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. Base stations can be macro base stations, micro base stations, relay nodes, donor nodes, or similar entities, or combinations thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. A base station can also be a mobile switching center, or a device that performs base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, a network-side device in a 6G network, or a device performing base station functions in future communication systems. Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0032] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0033] In some deployments, the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.

[0034] By way of example and not limitation, in the embodiments of this application, the network device may have mobility characteristics; for example, the network device may be a mobile device. In some embodiments of this application, the network device may be satellite-based or space-based, that is, the network device is installed on a satellite or flying equipment. In some embodiments of this application, the network device may also be a base station installed in locations such as land or water.

[0035] In this embodiment, the network device can provide services to a cell. The terminal device communicates with the network device through the transmission resources (e.g., frequency domain resources, or spectrum resources) used by the cell. The cell can be the cell corresponding to the network device (e.g., a base station). The cell can belong to a macro base station or to a base station corresponding to a small cell. The small cell can include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-speed data transmission services.

[0036] For example, Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application. As shown in Figure 1, the communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal, terminal). The network device 110 can provide communication coverage for a specific geographical area and can communicate with terminal devices located within that coverage area.

[0037] Figure 1 illustrates an exemplary network device and two terminal devices. In some embodiments of this application, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area. This application does not limit this aspect.

[0038] In some embodiments of this application, the wireless communication system shown in FIG1 may also include other network entities such as a mobility management entity (MME) and an access and mobility management function (AMF), but this application does not limit this.

[0039] It should be understood that devices with communication functions in the network / system of this application embodiment can be referred to as communication devices. Taking the communication system 100 shown in FIG1 as an example, the communication devices may include network devices 110 and terminal devices 120 with communication functions. Network devices 110 and terminal devices 120 can be the specific devices described above, which will not be repeated here. The communication devices may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities, which are not limited in this application embodiment.

[0040] In communication systems, network devices typically configure corresponding TCI states for signals or channels to be transmitted (such as downlink signals or channels) to indicate the QCL reference signal corresponding to the target signal or target channel, so that the terminal device can transmit the target signal or target channel based on the reference signal.

[0041] A TCI state can contain the following configurations:

[0042] TCI Status ID is used to identify a TCI status;

[0043] QCL Information 1;

[0044] QCL Information 2;

[0045] One QCL message contains the following information:

[0046] The QCL type configuration can be one of QCL type A, QCL type B, QCL type C or QCL type D;

[0047] QCL reference signal configuration includes the cell ID where the reference signal is located, the bandwidth part (BWP) ID, and the identifier of the reference signal, such as the channel-state information reference signal (CSI-RS) resource ID or the synchronization signal block (SSB) index.

[0048] In QCL information 1 and QCL information 2, at least one QCL information must have a QCL type of one of type A, type B, or type C, and the other QCL information (if configured) must have a QCL type of type D.

[0049] The definitions of different QCL type configurations are as follows:

[0050] 'QCL-TypeA': {Doppler shift, Doppler spread, average delay, delay spread};

[0051] 'QCL-TypeB':{Doppler shift,Doppler spread};

[0052] 'QCL-TypeC':{Doppler shift,average delay};

[0053] 'QCL-TypeD': {Spatial Rx parameter};

[0054] If the network device configures the QCL reference signal of the target downlink channel as a reference SSB or reference CSI-RS resource through the TCI state, and the QCL type is configured as typeA, typeB, or typeC, then the terminal device can assume that the target downlink channel and the reference SSB or reference CSI-RS resource have the same large-scale parameters, and thus use the same receiving parameters for reception. The large-scale parameters are determined by the QCL type configuration. Similarly, if the network device configures the QCL reference signal of the target downlink channel as a reference SSB or reference CSI-RS resource through the TCI state, and the QCL type is configured as typeD, then the terminal device can use the same receiving beam (i.e., Spatial Rx parameter) as when receiving the reference SSB or reference CSI-RS resource to receive the target downlink channel. It should be noted that, under normal circumstances, the downlink channel and its reference SSB or reference CSI-RS resource are transmitted by the same TRP, the same panel, or the same beam on the network side. Therefore, if the transmission TRP, transmission panel, or transmission beam of two downlink channels (or downlink signals) are different, different TCI states are usually configured.

[0055] For different channels (or signals), network devices may indicate TCI states in different ways. For example, for downlink control channels, TCI states can be indicated via radio resource control (RRC) signaling or a combination of RRC and media access control (MAC) signaling. Similarly, for downlink data channels, taking PDSCH as an example, as shown in Figure 2, N candidate TCI states are indicated via RRC signaling. Then, the MAC layer activates K TCI states from the N candidate TCI states. Finally, the TCI state indication field in downlink control information (DCI) indicates one or two TCI states from the activated K TCI states for PDSCH reception.

[0056] The above describes the TCI configuration process for downlink signals or downlink channels. With the evolution of communication systems, the concepts of uplink TCI states and joint TCI states have been introduced, extending the TCI states used for downlink transmission to uplink transmission (currently, only QCL-TypeD can be used for uplink transmission). Specifically, the TCI states configured by network devices can be used to determine the transmit beam for uplink transmission. Terminal devices can use the receive beam of the downlink signal or the transmit beam of the uplink signal indicated in the TCI state as the target transmit beam for uplink transmission.

[0057] As discussed above, in related technologies, the reception of downlink signals or downlink channels relies on the TCI state to obtain large-scale parameters of the channel (such as Doppler and delay information) for channel estimation, thereby ensuring demodulation performance. However, in some scenarios, terminal devices can transmit target signals or target channels without relying on the TCI state. For example, if the signal or channel transmission is based on an AI model receiver, then at least part of the AI ​​model can extract the large-scale parameters of the current channel through the channel information in the training data during training. In other words, the terminal device does not need to rely on the TCI state to obtain this information. In this case, the TCI state configured by the network device may be redundant information, resulting in unnecessary downlink signaling overhead.

[0058] To address the aforementioned issues, in this embodiment of the application, the terminal device reports (through first information reporting) whether it supports the transmission of target signals or channels without TCI status indication, or whether the model used for reporting the transmission of target signals or channels is associated with TCI status. Thus, the network device can determine whether it needs to configure TCI status for the terminal device based on the terminal device's reporting capabilities or the model currently used for transmission, thereby saving downlink signaling overhead.

[0059] The embodiments of this application will be described in detail below.

[0060] Figure 3 is a flowchart illustrating the communication method provided in an embodiment of this application. Referring to Figure 3, in step S310, the terminal device sends first information to the network device. Correspondingly, the network device receives the first information sent by the terminal device.

[0061] The first information can be used to indicate whether the terminal device supports signal or channel transmission without TCI status indication. In other words, the terminal device can obtain the large-scale parameters of the channel without relying on the TCI status, or the terminal device can receive signals or channels without the large-scale parameters of the channel.

[0062] Alternatively, the initial information can be used to indicate whether one or more models used for signal or channel transmission are associated with the TCI state. This model can be a neural network model, or it can also be called an artificial intelligence (AI) model, neural network, or machine learning (ML) model. The basic information about the model can include the model structure and model parameters obtained based on the training data.

[0063] The first information can be carried in multiple ways. For example, the first information can be reported through terminal capability reporting or through model update information. That is to say, the terminal device can report the supported models in the terminal capability reporting, and include the first information at the same time; or it can report the first information through model update information when updating model information.

[0064] The TCI states mentioned above can be used to determine at least one of the following channel parameters: Doppler shift, Doppler spread, average delay, and delay spread. In other words, the QCL type included in the TCI states can be type A, type B, or type C, used to obtain large-scale parameters of the channel.

[0065] Model-associated with TCI state can be understood as the model relying on TCI state to obtain the large-scale parameters of the current channel, while model-unassociated with TCI state can be understood as the model being able to extract the large-scale parameters of the current channel through channel information in the training data during training, i.e., it does not need to rely on TCI state to obtain the large-scale parameters.

[0066] It should be understood that the transmission of signals or channels mentioned in the embodiments of this application can be either the transmission or reception of signals or channels. That is, the signal can be a downlink signal or an uplink signal, and the channel can be a downlink channel or an uplink channel. In some embodiments, the signal or channel can be one or more of a downlink reference signal, a downlink data channel, a downlink control channel, an uplink control channel, or an uplink data channel.

[0067] On the network side, after receiving the first information, the network device can determine whether it needs to configure the TCI state for the terminal device based on the indication information in the first information. For example, if the first information indicates that the terminal device supports signal or channel transmission without TCI state indication, or indicates that the model used for signal or channel transmission is not associated with TCI state, then the network device does not need to configure the TCI state for the terminal device, thereby saving downlink signaling overhead.

[0068] Alternatively, if the first information indicates that the terminal device does not support signal or channel transmission without TCI status indication, or indicates the model associated with the TCI status used for signal or channel transmission, then the network device needs to configure the TCI status for the terminal device.

[0069] The model used for signal or channel transmission can be determined by the network device. When the network device is configured with a TCI state, it can determine the model used for signal or channel transmission based on first information. For example, if the first information indicates that the model used for signal or channel transmission is associated with a TCI state, then the network device will select the first model associated with the TCI state as the model used for signal or channel transmission. Alternatively, if the first information indicates that the model used for signal or channel transmission is not associated with a TCI state, then the network device will select the first model not associated with the TCI state as the model used for signal or channel transmission.

[0070] Furthermore, the network device can instruct the terminal device to determine the first model.

[0071] In some scenarios, network devices may not be configured with TCI status (e.g., there is no TCI status indication field in DCI). In this case, if the first information indicates that the model used for signal or channel transmission is associated with the TCI status, then the network device can transmit signals or channels without being based on the model.

[0072] On the terminal side, the terminal device can transmit signals or channels based on the first information. For example, if the first information indicates that the terminal device supports signal or channel transmission without a TCI status indication, then the terminal device can transmit signals or channels without relying on the TCI status. Alternatively, if the first information indicates that signal or channel transmission without a TCI status indication is not supported, then the terminal device needs to transmit the signal or channel based on the TCI status indicated by the network device.

[0073] For example, if the model used for transmitting the first information indication signal or channel is not associated with the TCI state, then the terminal device can transmit the signal or channel based solely on the model. Alternatively, if the model used for transmitting the first information indication signal or channel is associated with the TCI state, then the terminal device needs to transmit the signal or channel based on both the model and the TCI state indicated by the terminal device.

[0074] As mentioned earlier, network devices may not be configured with TCI status. In this case, if the model used for the transmission of the first information indication signal or channel is associated with the TCI status, then the terminal device may not transmit the signal or channel, or the terminal device may not transmit the channel or signal based on the model.

[0075] The model used for signal or channel transmission can be indicated to the terminal device by the network device, or it can be determined autonomously by the terminal device. In some embodiments, the terminal device can determine the model used for signal or channel transmission based on the configuration of the TCI state. For example, when the network device is configured with a TCI state, the terminal device can select a first model associated with the TCI state as the model used for signal or channel transmission, or it can select a first model not associated with the TCI state as the model used for signal or channel transmission. That is, if the network device is configured with a TCI state, the model used for signal or channel transmission may or may not be associated with the TCI state in the first information; this application does not specifically limit this.

[0076] For example, if the network device is not configured with TCI state, the terminal device can select a first model that is not associated with TCI state as the model used for signal or channel transmission.

[0077] In this embodiment of the application, the terminal device reports (through the first information) whether it supports the transmission of the target signal or channel without TCI status indication, or whether the model used to report the transmission of the target signal or channel is associated with TCI status. Thus, the network device can determine whether it is necessary to configure TCI status for the terminal device based on the terminal device's reporting capability or the model currently used for transmission, thereby saving downlink signaling overhead.

[0078] The following examples, from Examples 1 to Examples 4, provide more detailed illustrations of the communication methods provided in this application.

[0079] Example 1

[0080] In this embodiment, the terminal device indicates whether signal or channel transmission is supported without a TCI status indication via first information. This embodiment can be applied to the reception of downlink signals or downlink channels. The signal or channel here can be one or more of a downlink reference signal, a downlink data channel, or a downlink control channel.

[0081] The first piece of information can be reported through terminal capabilities. In other words, whether a terminal device relies on TCI status for signal or channel transmission can be reported to the network device as a terminal capability. This method can reuse existing signaling to send the first piece of information, helping to reduce signaling overhead.

[0082] After receiving the first information, the network device can determine whether to configure a TCI state for a signal or channel based on the first information. In some embodiments, when the first information indicates that the transmission of a signal or channel is supported without a TCI state indication, the network device may not configure a TCI state for that signal or channel. For example, if the signal or channel is a PDSCH, the DCI that schedules the PDSCH may not have a TCI state indication field, thereby saving DCI signaling overhead. Furthermore, the network device may also configure the TCI state without using higher-layer signaling (such as RRC).

[0083] In other embodiments, when the first information indication does not support signal or channel transmission without a TCI status indication, the network device configures a TCI status for the signal or channel. The method of configuring the TCI status can reuse TCI status configuration methods from related technologies.

[0084] Accordingly, the terminal device can transmit signals or channels based on the first information. In some embodiments, when the first information indicates support for signal or channel transmission without a TCI state indication, the terminal device can transmit signals or channels without relying on the TCI state. That is, the terminal device can obtain the large-scale parameters of the channel without depending on the TCI state, or the terminal device can receive the signal or channel without requiring the large-scale parameters of the channel.

[0085] In other embodiments, when the first information indication does not support signal or channel transmission without a TCI status indication, the terminal device needs to transmit the signal or channel based on the TCI status indicated by the network device. In other words, the terminal device expects the network device to indicate the TCI status for the transmission of the signal or channel. That is, if the network device does not indicate the TCI status at this time, the terminal device can treat it as an error case and not receive the signal or channel.

[0086] Example 2

[0087] In this embodiment, the terminal device indicates, via first information, whether one or more models used for signal or channel transmission are associated with TCI status. This embodiment can be applied to the reception of downlink signals or downlink channels. The signal or channel here can be one or more of a downlink reference signal, a downlink data channel, or a downlink control channel.

[0088] The model in this embodiment can be a model for downlink channel estimation (based on downlink reference signal) or a model for downlink channel detection (simultaneously realizing channel estimation and detection functions).

[0089] The first piece of information can be reported through terminal capabilities or through model update information. That is, the terminal device can report the supported models in its terminal capability reporting, including this first piece of information; alternatively, it can report the first piece of information through model update information when updating model information. This method can reuse existing signaling to send the first piece of information, helping to reduce signaling overhead.

[0090] After receiving the first information, the network device can determine whether to configure a TCI state for a signal or channel based on the first information. In some embodiments, if the model used for the current signal or channel transmission is not associated with a TCI state (indicated by the first information), the network device does not configure a TCI state for that signal or channel. The model used for the current signal or channel transmission can be a model configured by the network device for the terminal device, or it can be a model trained by the terminal device itself. For example, if the signal or channel is a PDSCH, the DCI scheduling for that PDSCH may not have a TCI state indication field, thereby saving DCI signaling overhead. Furthermore, the network device may also configure the TCI state without using higher-layer signaling (such as RRC signaling).

[0091] In other embodiments, the network device configures the TCI state for the signal or channel when the model used for the current signal or channel transmission is associated with the TCI state. The method of configuring the TCI state can reuse the TCI state configuration methods in related technologies.

[0092] Accordingly, the terminal device can transmit signals or channels based on the first information. In some embodiments, when the model used for the current signal or channel transmission is not associated with the TCI state, the terminal device can receive the signal or channel based on the model. That is, the terminal device can obtain the large-scale parameters of the channel without relying on the TCI state, or the terminal device can receive the signal or channel based solely on the model without relying on the TCI state. For example, the model here can be a model for downlink channel estimation or a model for downlink channel detection.

[0093] In other embodiments, when the model associated with the TCI state used for the current signal or channel transmission is in the current TCI state, the terminal device can receive the signal or channel based on the model and the TCI state indicated by the terminal device.

[0094] For example, the terminal device obtains large-scale parameters of the channel based on the indicated TCI state, and uses these parameters as input to the above model to perform channel estimation or detection of the signal or channel.

[0095] Alternatively, if the model used for the current signal or channel transmission is associated with a TCI state, and the network device does not configure a TCI state (e.g., a TCI state indication field is not present in the DCI), the terminal device may not receive the signal or channel, or it may not receive the signal or channel based on the model. In other words, if the model used for the current signal or channel transmission is associated with a TCI state, and the terminal device expects the network device to configure a TCI state; if the terminal device does not configure a TCI state, it can treat this as an error case and not receive the signal or channel. Alternatively, the terminal device can receive the signal or channel based on a conventional non-AI receiver, such as a linear channel estimator or a linear receiver.

[0096] Example 3

[0097] In this embodiment, the terminal device indicates, via first information, whether one or more models used for signal or channel transmission are associated with TCI status. This embodiment can be applied to the reception of downlink signals or downlink channels. The signal or channel here can be one or more of a downlink reference signal, a downlink data channel, or a downlink control channel.

[0098] The model in this embodiment can be a model for downlink channel estimation (based on downlink reference signal) or a model for downlink channel detection (simultaneously realizing channel estimation and detection functions).

[0099] The first piece of information can be reported through terminal capabilities or through model update information. That is, the terminal device can report the supported models in its terminal capability reporting, including this first piece of information; alternatively, it can report the first piece of information through model update information when updating model information. This method can reuse existing signaling to send the first piece of information, helping to reduce signaling overhead.

[0100] In this embodiment, the model used for current signal or channel transmission can be determined based on the first information. This model can be determined by a network device or a terminal device based on the first information. For example, the terminal device or network device can determine the model used for current signal or channel transmission based on the TCI state configuration and / or the first information. In some embodiments, when the network device configures the TCI state, the model is either a model associated with the TCI state indicated by the first information, or a model not associated with the TCI state indicated by the first information. That is, if the network device configures the TCI state, the model used for signal or channel transmission may or may not be associated with the TCI state in the first information; this embodiment does not specifically limit this.

[0101] In other embodiments, when the network device is not configured with a TCI state, the model is a model without a TCI state as indicated by the first information. That is, in this case, the network device or terminal device can only use a model without a TCI state; otherwise, no TCI state is available.

[0102] If the network device determines the model, it can further instruct the terminal device to receive the signal or channel on the terminal side. In other words, if the network device instructs the terminal device to use a model that is associated with the TCI state in the first information, then the network device needs to simultaneously instruct the TCI state of the signal or channel; if the network device instructs the terminal device to use a model that is not associated with the TCI state in the first information, then the network device does not need to instruct the TCI state of the signal or channel.

[0103] Example 4

[0104] In this embodiment, the terminal device indicates, through first information, whether one or more models used for signal or channel transmission (uplink transmission) are associated with TCI status. This embodiment can be applied to uplink transmission, i.e., the transmission of uplink signals or uplink channels. Here, uplink transmission can be based on joint source-channel coding (JSCC). For example, this uplink transmission can be used to report downlink channel state information (CSI).

[0105] The terminal device may include first information in the model information of one or more models used for JSCC. In some embodiments, the first information may be reported via model update information. Alternatively, the first information may be reported via terminal capabilities. This approach can reuse existing signaling to send the first information, helping to reduce signaling overhead.

[0106] After receiving the first information, the network device can determine whether to configure a TCI state for the uplink transmission based on the first information. In some embodiments, when the model used for the JSCC-based uplink transmission is not associated with a TCI state, the network device may not configure a TCI state for that uplink transmission. The model used for the JSCC-based uplink transmission can be a model configured by the network device for the terminal device, or a model trained by the terminal device.

[0107] In other embodiments, when the model is associated with the TCI state for uplink transmission based on JSCC, the network device can configure the TCI state for the uplink transmission. In this case, the QCL source signal indicated by the TCI state can be a downlink reference signal, such as CSI-RS or SSB. The terminal device can obtain the large-scale parameters of the downlink channel based on the indicated downlink reference signal and use the obtained parameters as model input in JSCC for downlink CSI reporting.

[0108] Accordingly, the terminal device can perform uplink transmission based on the first information. In some embodiments, when the model currently used for JSCC-based uplink transmission is not associated with the TCI state, the terminal device can perform uplink transmission based on the model. That is, the terminal device can obtain the large-scale parameters of the channel without relying on the TCI state, or the terminal device can perform uplink transmission based solely on the model, without relying on the TCI state. For example, the model here can be a model used to generate channel-coded bits.

[0109] In other embodiments, when associating the model currently used for uplink transmission with the TCI state, the terminal device performs uplink transmission based on the model and the indicated TCI state. For example, the terminal device obtains large-scale parameters of the channel based on the indicated TCI state and uses these parameters as input to the model to generate channel-coded source bits.

[0110] Alternatively, if the uplink transmission model is associated with TCI states, and the network device does not configure TCI states (e.g., there is no TCI state indication field in the DCI), the terminal device may not perform uplink transmission, or it may not perform uplink transmission based on the model. In other words, if the uplink transmission model is associated with TCI states, and the terminal device does not expect the network device to not configure TCI states, otherwise the terminal device will treat this as an error case and not perform uplink transmission. Alternatively, the terminal device can perform uplink transmission based on traditional non-AI methods, such as traditional source coding and channel coding.

[0111] The method embodiments of this application have been described in detail above with reference to Figures 1 to 3. The apparatus embodiments of this application will be described in detail below with reference to Figures 4 to 6. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.

[0112] Figure 4 is a schematic diagram of a terminal device according to an embodiment of this application. The terminal device 400 shown in Figure 4 includes: a transmitting unit 410.

[0113] The sending unit 410 is used to send first information to the network device;

[0114] Wherein, the first information is used to indicate whether signal or channel transmission is supported without TCI status indication, or the first information is used to indicate whether one or more models for signal or channel transmission are associated with TCI status.

[0115] In some implementations, the TCI state is used to determine at least one of the following channel parameters:

[0116] Doppler shift, Doppler spread, average delay, delay spread.

[0117] In some implementations, the model information of the one or more models includes the first information, which is used to indicate whether the one or more models are associated with the TCI state.

[0118] In some implementations, the terminal device 400 further includes:

[0119] A transmission unit is used to transmit the signal or channel according to the first information.

[0120] In some implementations, the transmission unit is used for:

[0121] When the first information indicates support for transmitting the signal or channel without the TCI status indication, the transmission of the signal or channel is not based on the TCI status; and / or,

[0122] When the first information indicates that the transmission of the signal or channel is not supported without the TCI status indication, the transmission of the signal or channel is performed based on the TCI status indicated by the network device.

[0123] In some implementations, the transmission unit is used for:

[0124] When the first information indicates that the one or more models are not associated with the TCI state, the signal or channel is transmitted based on the one or more models; and / or,

[0125] When the first information indicates that the one or more models are associated with the TCI state, the signal or channel is transmitted based on the one or more models and the TCI state indicated by the network device.

[0126] In some implementations, the transmission unit is further used for:

[0127] If the first information indicates that the one or more models are associated with the TCI state, and the network device is not configured with the TCI state, then the transmission of the signal or channel will not be performed; or,

[0128] If the first information indicates that the one or more models are associated with the TCI state, and the network device is not configured with the TCI state, then the signal or channel will not be transmitted based on the one or more models.

[0129] In some implementations, the terminal device 400 further includes:

[0130] The determining unit is configured to determine a first model among the one or more models based on the configuration of the TCI state and / or the first information.

[0131] In some implementations, when the network device is configured with the TCI state, the first model is the model associated with the TCI state indicated by the first information, or the first model is the model not associated with the TCI state indicated by the first information; and / or,

[0132] If the network device is not configured with the TCI state, the first model is the model indicated by the first information that is not associated with the TCI state.

[0133] In some implementations, the signal or channel includes one or more of the following:

[0134] Downlink reference signal, downlink data channel, downlink control channel, uplink control channel or uplink data channel.

[0135] In some implementations, the first information is reported based on terminal capabilities, or the first information is reported based on model update information of the one or more models.

[0136] Figure 5 is a schematic diagram of a network device according to an embodiment of this application. The network device 500 shown in Figure 5 includes: a receiving unit 510.

[0137] The receiving unit 510 is used to receive the first information sent by the terminal device;

[0138] Wherein, the first information is used to indicate whether signal or channel transmission is supported without TCI status indication, or the first information is used to indicate whether one or more models for signal or channel transmission are associated with TCI status.

[0139] In some implementations, the TCI state is used to determine at least one of the following channel parameters:

[0140] Doppler shift, Doppler spread, average delay, delay spread.

[0141] In some implementations, the model information of the one or more models includes the first information, which is used to indicate whether the one or more models are associated with the TCI state.

[0142] In some implementations, the network device 500 further includes:

[0143] The configuration unit is configured to determine, based on the first information, whether to configure the TCI state for the signal or channel.

[0144] In some implementations, the configuration unit is used for:

[0145] When the first information indicates support for transmission of the signal or channel without the TCI status indication, the TCI status is not configured for the signal or channel; and / or,

[0146] When the first information indicates that the transmission of the signal or channel is not supported without the TCI status indication, the TCI status is configured for the signal or channel.

[0147] In some implementations, the configuration unit is used for:

[0148] When the first information indicates that one or more models are not associated with the TCI state, the TCI state is not configured for the signal or channel; and / or,

[0149] When the first information indicates that the one or more models are associated with the TCI state, the TCI state is configured for the signal or channel.

[0150] In some implementations, the network device 500 further includes:

[0151] The determining unit is configured to determine a first model among the one or more models based on the configuration of the TCI state and / or the first information, wherein the first information is used to indicate whether the one or more models are associated with the TCI state.

[0152] In some implementations, when the network device 500 is configured with the TCI state, the first model is the model associated with the TCI state indicated by the first information, or the first model is the model not associated with the TCI state indicated by the first information; and / or,

[0153] If the network device 500 is not configured with the TCI state, the first model is the model indicated by the first information that is not associated with the TCI state.

[0154] In some implementations, the network device 500 further includes:

[0155] A transmission unit is configured to not transmit the signal or channel based on the one or more models if the first information indicates that the one or more models are associated with the TCI state and the network device 500 is not configured with the TCI state.

[0156] In some implementations, the network device 500 further includes:

[0157] An instruction unit is used to instruct the first model to the terminal device.

[0158] In some implementations, the signal or channel includes one or more of the following:

[0159] Downlink reference signal, downlink data channel, downlink control channel, uplink control channel or uplink data channel.

[0160] In some implementations, the first information is reported based on terminal capabilities, or the first information is reported based on update information from the one or more models.

[0161] Figure 6 is a schematic structural diagram of the device according to an embodiment of this application. The dashed lines in Figure 6 indicate that the unit or module is optional. The device 600 can be used to implement the methods described in the above method embodiments. The device 600 can be a chip, a terminal device, or a network device.

[0162] Apparatus 600 may include one or more processors 610. The processor 610 may support apparatus 600 in implementing the methods described in the preceding method embodiments. The processor 610 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor 610 may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0163] The apparatus 600 may further include one or more memories 620. The memories 620 store a program that can be executed by the processor 610, causing the processor 610 to perform the methods described in the preceding method embodiments. The memories 620 may be independent of the processor 610 or integrated within the processor 610.

[0164] The device 600 may also include a transceiver 630. The processor 610 can communicate with other devices or chips via the transceiver 630. For example, the processor 610 can send and receive data with other devices or chips via the transceiver 630.

[0165] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to the communication device provided in this application, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0166] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in this application embodiment, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0167] This application also provides a computer program. This computer program can be applied to the terminal device or network device provided in this application, and the computer program causes the computer to execute the methods performed by the communication device in various embodiments of this application.

[0168] It should be understood that the term "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0169] In the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between two things, or that there is an association between two things, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.

[0170] The “configuration” in this application embodiment may include configuration via at least one of system messages, radio resource control (RRC) signaling, and media access control element (MAC CE).

[0171] In some embodiments of this application, "predefined" or "preset" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, "predefined" can refer to what is defined in the protocol.

[0172] In some embodiments of this application, the term "protocol" may refer to standard protocols in the field of communications, such as LTE protocols, NR protocols, and related protocols applied in future communication systems. This application does not limit the scope of the term.

[0173] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0174] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0175] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0176] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0177] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0178] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0179] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, include: The terminal device sends the first information to the network device; Wherein, the first information is used to indicate whether signal or channel transmission is supported without a transmission configuration indication (TCI) status indication, or the first information is used to indicate whether one or more models for signal or channel transmission are associated with a TCI status.

2. The method according to claim 1, characterized in that, The TCI state is used to determine at least one of the following channel parameters: Doppler shift, Doppler spread, average delay, delay spread.

3. The method according to claim 1 or 2, characterized in that, The model information of the one or more models includes the first information, which is used to indicate whether the one or more models are associated with the TCI state.

4. The method according to any one of claims 1 to 3, characterized in that, The method further includes: The terminal device transmits the signal or channel based on the first information.

5. The method according to claim 4, characterized in that, The terminal device transmits the signal or channel according to the first information, including: When the first information indicates support for transmitting the signal or channel without the TCI status indication, the terminal device does not transmit the signal or channel based on the TCI status; and / or, When the first information indication does not support the transmission of the signal or channel without the TCI status indication, the terminal device transmits the signal or channel based on the TCI status indicated by the network device.

6. The method according to claim 4, characterized in that, The terminal device transmits the signal or channel according to the first information, including: When the first information indicates that the one or more models are not associated with the TCI state, the terminal device transmits the signal or channel based on the one or more models; and / or, When the first information indicates that the one or more models are associated with the TCI state, the terminal device transmits the signal or channel based on the one or more models and the TCI state indicated by the network device.

7. The method according to claim 6, characterized in that: If the first information indicates that the one or more models are associated with the TCI state, and the network device is not configured with the TCI state, then the terminal device will not transmit the signal or channel; or, If the first information indicates that the one or more models are associated with the TCI state, and the network device is not configured with the TCI state, then the terminal device will not transmit the signal or channel based on the one or more models.

8. The method according to any one of claims 1 to 7, characterized in that, The method further includes: The terminal device determines the first model among the one or more models based on the configuration of the TCI state and / or the first information.

9. The method according to claim 8, characterized in that: When the network device is configured with the TCI state, the first model is either the model associated with the TCI state indicated by the first information, or the first model is a model not associated with the TCI state indicated by the first information; and / or, If the network device is not configured with the TCI state, the first model is the model indicated by the first information that is not associated with the TCI state.

10. The method according to any one of claims 1 to 9, characterized in that, The signal or channel includes one or more of the following: Downlink reference signal, downlink data channel, downlink control channel, uplink control channel or uplink data channel.

11. The method according to any one of claims 1 to 10, characterized in that, The first information is reported based on terminal capabilities, or the first information is reported based on model update information of the one or more models.

12. A communication method, characterized in that, include: The network device receives the first information sent by the terminal device; Wherein, the first information is used to indicate whether signal or channel transmission is supported without a transmission configuration indication (TCI) status indication, or the first information is used to indicate whether one or more models for signal or channel transmission are associated with a TCI status.

13. The method according to claim 12, characterized in that, The TCI state is used to determine at least one of the following channel parameters: Doppler shift, Doppler spread, average delay, delay spread.

14. The method according to claim 12 or 13, characterized in that, The model information of the one or more models includes the first information, which is used to indicate whether the one or more models are associated with the TCI state.

15. The method according to any one of claims 12 to 14, characterized in that, The method further includes: The network device determines, based on the first information, whether to configure the TCI state for the signal or channel.

16. The method according to claim 15, characterized in that, The network device determines whether to configure the TCI state for the signal or channel based on the first information, including: When the first information indicates support for transmitting the signal or channel without the TCI status indication, the network device does not configure the TCI status for the signal or channel; and / or, When the first information indication does not support the transmission of the signal or channel without the TCI status indication, the network device configures the TCI status for the signal or channel.

17. The method according to claim 15, characterized in that, The network device determines whether to configure the TCI state for the signal or channel based on the first information, including: When the first information indicates that one or more models are not associated with the TCI state, the network device does not configure the TCI state for the signal or channel; and / or, When the first information indicates that one or more models are associated with the TCI state, the network device configures the TCI state for the signal or channel.

18. The method according to claim 17, characterized in that, The method further includes: If the first information indicates that the one or more models are associated with the TCI state, and the network device is not configured with the TCI state, then the network device will not transmit the signal or channel based on the one or more models.

19. The method according to any one of claims 12 to 18, characterized in that, The method further includes: The network device determines a first model among the one or more models based on the configuration of the TCI state and / or the first information, wherein the first information is used to indicate whether the one or more models are associated with the TCI state.

20. The method according to claim 19, characterized in that: When the network device is configured with the TCI state, the first model is either the model associated with the TCI state indicated by the first information, or the first model is a model not associated with the TCI state indicated by the first information; and / or, If the network device is not configured with the TCI state, the first model is the model indicated by the first information that is not associated with the TCI state.

21. The method according to claim 19 or 20, characterized in that, The method further includes: The network device instructs the terminal device to use the first model.

22. The method according to any one of claims 12 to 21, characterized in that, The signal or channel includes one or more of the following: Downlink reference signal, downlink data channel, downlink control channel, uplink control channel or uplink data channel.

23. The method according to any one of claims 12 to 22, characterized in that, The first information is reported based on terminal capabilities, or the first information is reported based on update information of the one or more models.

24. A terminal device, characterized in that, include: The sending unit is used to send the first information to the network device; Wherein, the first information is used to indicate whether signal or channel transmission is supported without a transmission configuration indication (TCI) status indication, or the first information is used to indicate whether one or more models for signal or channel transmission are associated with a TCI status.

25. The terminal device according to claim 24, characterized in that, The TCI state is used to determine at least one of the following channel parameters: Doppler shift, Doppler spread, average delay, delay spread.

26. The terminal device according to claim 24 or 25, characterized in that, The model information of the one or more models includes the first information, which is used to indicate whether the one or more models are associated with the TCI state.

27. The terminal device according to any one of claims 24 to 26, characterized in that, The terminal device also includes: A transmission unit is used to transmit the signal or channel according to the first information.

28. The terminal device according to claim 27, characterized in that, The transmission unit is used for: When the first information indicates support for transmitting the signal or channel without the TCI status indication, the transmission of the signal or channel is not based on the TCI status; and / or, When the first information indicates that the transmission of the signal or channel is not supported without the TCI status indication, the transmission of the signal or channel is performed based on the TCI status indicated by the network device.

29. The terminal device according to claim 27, characterized in that, The transmission unit is used for: When the first information indicates that the one or more models are not associated with the TCI state, the signal or channel is transmitted based on the one or more models; and / or, When the first information indicates that the one or more models are associated with the TCI state, the signal or channel is transmitted based on the one or more models and the TCI state indicated by the network device.

30. The terminal device according to claim 29, characterized in that, The transmission unit is also used for: If the first information indicates that the one or more models are associated with the TCI state, and the network device is not configured with the TCI state, then the transmission of the signal or channel will not be performed; or, If the first information indicates that the one or more models are associated with the TCI state, and the network device is not configured with the TCI state, then the signal or channel will not be transmitted based on the one or more models.

31. The terminal device according to any one of claims 24 to 30, characterized in that, The terminal device also includes: The determining unit is configured to determine a first model among the one or more models based on the configuration of the TCI state and / or the first information.

32. The terminal device according to claim 31, characterized in that: When the network device is configured with the TCI state, the first model is either the model associated with the TCI state indicated by the first information, or the first model is a model not associated with the TCI state indicated by the first information; and / or, If the network device is not configured with the TCI state, the first model is the model indicated by the first information that is not associated with the TCI state.

33. The terminal device according to any one of claims 24 to 32, characterized in that, The signal or channel includes one or more of the following: Downlink reference signal, downlink data channel, downlink control channel, uplink control channel or uplink data channel.

34. The terminal device according to any one of claims 24 to 33, characterized in that, The first information is reported based on terminal capabilities, or the first information is reported based on model update information of the one or more models.

35. A network device, characterized in that, include: The receiving unit is used to receive the first information sent by the terminal device; Wherein, the first information is used to indicate whether signal or channel transmission is supported without a transmission configuration indication (TCI) status indication, or the first information is used to indicate whether one or more models for signal or channel transmission are associated with a TCI status.

36. The network device according to claim 35, characterized in that, The TCI state is used to determine at least one of the following channel parameters: Doppler shift, Doppler spread, average delay, delay spread.

37. The network device according to claim 35 or 36, characterized in that, The model information of the one or more models includes the first information, which is used to indicate whether the one or more models are associated with the TCI state.

38. The network device according to any one of claims 35 to 37, characterized in that, The network device also includes: The configuration unit is configured to determine, based on the first information, whether to configure the TCI state for the signal or channel.

39. The network device according to claim 38, characterized in that, The configuration unit is used for: When the first information indicates support for transmitting the signal or channel without the TCI status indication, the TCI status is not configured for the signal or channel; and / or, When the first information indicates that the transmission of the signal or channel is not supported without the TCI status indication, the TCI status is configured for the signal or channel.

40. The network device according to claim 38, characterized in that, The configuration unit is used for: When the first information indicates that one or more models are not associated with the TCI state, the TCI state is not configured for the signal or channel; and / or, When the first information indicates that the one or more models are associated with the TCI state, the TCI state is configured for the signal or channel.

41. The network device according to claim 40, characterized in that, The network device also includes: A transmission unit is configured to not transmit the signal or channel based on the one or more models if the first information indicates that the one or more models are associated with the TCI state and the network device is not configured with the TCI state.

42. The network device according to any one of claims 35 to 41, characterized in that, The network device also includes: The determining unit is configured to determine a first model among the one or more models based on the configuration of the TCI state and / or the first information, wherein the first information is used to indicate whether the one or more models are associated with the TCI state.

43. The network device according to claim 42, characterized in that: When the network device is configured with the TCI state, the first model is either the model associated with the TCI state indicated by the first information, or the first model is a model not associated with the TCI state indicated by the first information; and / or, If the network device is not configured with the TCI state, the first model is the model indicated by the first information that is not associated with the TCI state.

44. The network device according to claim 42 or 43, characterized in that, The network device also includes: An instruction unit is used to instruct the first model to the terminal device.

45. The network device according to any one of claims 35 to 44, characterized in that, The signal or channel includes one or more of the following: Downlink reference signal, downlink data channel, downlink control channel, uplink control channel or uplink data channel.

46. ​​The network device according to any one of claims 35 to 45, characterized in that, The first information is reported based on terminal capabilities, or the first information is reported based on update information of the one or more models.

47. A terminal device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory is used to store a program, and the processor is used to call the program in the memory to receive or send information through the transceiver, thereby causing the terminal device to perform the method as described in any one of claims 1-11.

48. A network device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory is used to store a program, and the processor is used to call the program in the memory to receive or send information through the transceiver, causing the terminal device to perform the method as described in any one of claims 12-23.

49. An apparatus, characterized in that, Includes a processor for calling a program from memory, causing the apparatus to perform the method as described in any one of claims 1-23.

50. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-23.

51. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-23.

52. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-23.

53. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1-23.

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