TCI configuration methods, devices and storage medium

Abstract

The present disclosure relates to TCI configuration methods, devices, and a storage medium in the technical field of communications. The method applied to a terminal device comprises: receiving DCI sent by a network device; and, according to the indication of the DCI, indicating a first TCI state mode or, according to the indication of the DCI, selecting a first TCI state list or a second TCI state list. When there is potential performance deterioration of AI beams, the present disclosure can give TCI state backoff indications, and efficiently and quickly indicate suitable and reliable beam information to terminals, so as to ensure stable data transmission under the fluctuations of the performance of AI models.

Description

TCI indication configuration method, device and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202410072865.2 and application date of January 18, 2024, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present disclosure relates to the field of communication technologies, and in particular to a TCI indication configuration method, device, and storage medium. Background Art

[0004] Currently, within the existing fifth-generation mobile communication technology (5G) design framework, artificial intelligence (AI) has achieved corresponding gains in multiple areas, such as channel state information (CSI) feedback, beam management, and positioning, demonstrating promising application prospects.

[0005] A typical use case for AI beam management is time-domain beam prediction. AI-enabled time-domain beam prediction can predict the optimal beam at a future time to reduce terminal beam measurement overhead and improve beamforming gain. However, in the terminal-side reasoning scenario, even if the user equipment (UE) model has a certain generalization capability, the reasoning performance of the UE's AI model is only good enough in a specific beam or channel environment. The AI ​​model may no longer have excellent prediction performance due to changes in the configured parameters or the scenario in which it is located.

[0006] Current technology allows networks to monitor the performance of deployed AI models if they detect potential performance degradation. This allows for network-wide lifecycle management of the model, including activation / deactivation, switching, and fallback to non-AI modes. However, these processes typically require processing time. Between the time the base station suspects AI model performance degradation and the completion of these processes, the base station must provide the terminal with appropriate beam information to ensure stable data transmission. Summary of the Invention

[0007] In order to solve the above technical problems, the embodiments of the present disclosure provide a TCI indication configuration method, device and storage medium, which can efficiently and quickly indicate appropriate and reliable beam information to the terminal, ensuring stable data transmission when the AI ​​model performance fluctuates.

[0008] In a first aspect of an embodiment of the present disclosure, a TCI indication configuration method is provided, which is applied to a terminal device. The method includes:

[0009] Receive DCI sent by network equipment;

[0010] Indicate the first TCI state mode according to the DCI instruction; or

[0011] According to the instruction of the DCI, the first TCI state list or the second TCI state list is selected.

[0012] A second aspect of the present disclosure provides a TCI indication configuration method, which is applied to a network device. The method includes:

[0013] Send DCI to the terminal;

[0014] Indicates the first TCI state mode of the terminal; or

[0015] Instruct the terminal to select the first TCI state list or the second TCI state list.

[0016] According to a third aspect of the present disclosure, a terminal device is provided, including:

[0017] A receiving module configured to receive DCI sent by a network device;

[0018] The fallback module is configured to indicate the first TCI state mode according to the indication of the DCI; or is configured to select the first TCI state list or the second TCI state list according to the indication of the DCI.

[0019] A fourth aspect of the embodiments of the present disclosure provides a network device, including:

[0020] A sending module, configured to send DCI to the terminal;

[0021] The indication module is configured to indicate the first TCI state mode of the terminal; or is configured to indicate the terminal to select the first TCI state list or the second TCI state list.

[0022] According to a fifth aspect of the present disclosure, an electronic device is provided, including:

[0023] at least one processor;

[0024] a memory for storing the at least one processor-executable instruction;

[0025] The at least one processor is configured to execute the instructions to implement the above method.

[0026] In a sixth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, which enables the electronic device to execute the above method when instructions in the computer-readable storage medium are executed by a processor of an electronic device.

[0027] At least one of the above-mentioned technical solutions adopted in the embodiments of the present disclosure can achieve the following beneficial effects: by receiving DCI sent by a network device; indicating a first TCI state mode according to the DCI instruction; or selecting a first TCI state list or a second TCI state list according to the DCI instruction. This solution can indicate a fallback TCI state when the AI ​​beam shows potential performance degradation. By efficiently and quickly indicating appropriate and reliable beam information to the terminal, stable data transmission is ensured despite fluctuations in AI model performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0029] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] FIG1 is a schematic diagram of a system architecture provided by an embodiment of the present disclosure;

[0031] FIG2 is a flow chart of a TCI indication configuration method applied to a terminal device according to an embodiment of the present disclosure;

[0032] FIG3 is a structural block diagram of a terminal device provided by an embodiment of the present disclosure;

[0033] FIG4 is a structural block diagram of a network device provided by an embodiment of the present disclosure;

[0034] FIG5 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure;

[0035] FIG6 is a schematic diagram of the structure of an exemplary computer system provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0038] It should be understood that the various steps described in the method embodiments of the present disclosure may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present disclosure is not limited in this respect.

[0039] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0040] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0041] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0042] First, the system architecture involved in this disclosure is explained.

[0043] The present disclosure can be applied to a fifth-generation (5G) system, which may also be referred to as a new radio (NR) system; or to a sixth-generation (6G) system, or a seventh-generation (7G) system, or other future communication systems; or can also be used in a device-to-device (D2D) system, a machine-to-machine (M2M) system, a vehicle-to-everything (V2X) system, and the like.

[0044] Figure 1 is a schematic diagram of a system architecture provided by an embodiment of the present disclosure. The present disclosure may be applied to the system architecture shown in Figure 1. The system architecture shown in Figure 1 may include, but is not limited to, network device 120 and terminal device 110. The number and configuration of devices in Figure 1 are for illustrative purposes only and do not constitute a limitation on the embodiments of the present disclosure. For example, in actual applications, multiple network devices and multiple terminal devices may be included.

[0045] Terminal devices, also known as user equipment (UE), mobile stations (MS), and mobile terminals (MT), are devices that provide voice and / or data connectivity to users. Examples include handheld devices and in-vehicle devices with wireless connectivity. Currently, some examples of terminal devices include mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes.

[0046] A network device, also known as an access network device, refers to a radio access network (RAN) node (or device) that connects a terminal device to a wireless network. It can also be called a base station. Examples of RAN nodes include: gNB, transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved NodeB, or HNB), baseband unit (BBU), or wireless fidelity (Wi-Fi) access point (AP). Furthermore, in a network architecture, a network device can include a centralized unit (CU) node, a distributed unit (DU) node, or a RAN device that includes both a CU and a DU node. It should be noted that the centralized unit node and the distributed unit node may also use other names, which are not limited in this disclosure.

[0047] For ease of understanding, the technical terms involved in the embodiments of the present disclosure are first introduced below.

[0048] 1. Beam

[0049] A beam is a communication resource that creates a directional transmission or reception effect through an antenna array in a transmitter or receiver of a network device or terminal. This effect is similar to the beam formed by a flashlight that focuses light in a single direction. Transmitting and receiving signals using beams can effectively increase signal transmission distance.

[0050] Beams can be divided into transmit beams and receive beams. The technology for forming beams can be beamforming technology or other technical means. Beamforming includes transmit beamforming and receive beamforming. The beamforming technology can be digital beamforming technology, analog beamforming technology, or hybrid digital / analog beamforming technology.

[0051] Transmit beam: The transmitting end device transmits a signal with a certain beamforming weight, forming a spatially directional beam. In the uplink direction, the transmitting end device can be a terminal device; in the downlink direction, the transmitting end device can be a network device.

[0052] Receive beam: The receiving device receives signals using certain beamforming weights, forming a spatially directional beam. In the uplink direction, the receiving device can be a network device; in the downlink direction, the receiving device can be a terminal device.

[0053] Transmit beamforming: When a transmitting device with an antenna array transmits a signal, it sets a specific amplitude and phase on each antenna element in the array. This gives the transmitted signal a certain spatial directionality, meaning that the signal power is high in some directions and low in others. The direction with the highest signal power defines the direction of the transmit beam. The antenna array consists of multiple antenna elements, and the specific amplitude and phase values ​​assigned to them are the beamforming weights.

[0054] Receive beamforming: When a receiving device with an antenna array receives a signal, it sets a specific amplitude and phase on each antenna element in the array. This ensures that the power gain of the received signal is directional. Specifically, the power gain is high when receiving signals from certain directions, and low when receiving signals from other directions. The direction with the highest power gain is the direction of the receive beam. The antenna array consists of multiple antenna elements, and the specific amplitude and phase values ​​assigned to them are the beamforming weights.

[0055] Sending a signal using a certain transmit beam: Sending a signal using a certain beamforming weight. Receiving a signal using a receive beam: Receive a signal using a certain beamforming weight.

[0056] The beam can be a wide beam, a narrow beam, or other types of beams.

[0057] Beams generally correspond to resources. For example, when performing beam measurement, the network device measures different beams through different resources, and the terminal device feeds back the measured resource quality, so that the network device can know the quality of the corresponding beam. During data transmission, the beam can also be indicated by its corresponding resource. For example, the network device indicates a transmission configuration indication-state through the transmission configuration index (TCI) field in the downlink control information (DCI), and the terminal device determines the beam corresponding to the reference resource based on the reference resource contained in the TCI-state. Different beams can be considered as different resources, and the same information or different information can be sent using (or through) different beams.

[0058] Beam pairs are based on the concept of beams. A beam pair typically consists of a transmit beam from a transmitting device and a receive beam from a receiving device. Unless otherwise specified, the transmit beam in the following text refers to the transmit beam of the network device, and the receive beam refers to the receive beam of the terminal device.

[0059] In a communication system, such as a 5G new radio (NR) system, both network devices and terminal devices can generate one or more transmit beams and one or more receive beams. Before transmitting data, network devices and terminal devices need to perform beam alignment. In the communication protocol, a beam can be specifically characterized as a digital beam, an analog beam, a spatial domain filter, a spatial filter, a spatial parameter, a TCI, a TCI-state, etc. The beam used to send a signal can be called a transmission beam (or Tx beam), a spatial domain transmission filter, a spatial transmission filter, a spatial domain transmission parameter, a spatial transmission parameter, etc. The beam used to receive signals may be referred to as a reception beam (or Rx beam), a spatial domain reception filter, a spatial reception filter, a spatial domain reception parameter, a spatial reception parameter, etc. It is understood that the embodiments of the present disclosure uniformly use the term "beam" for description, but the term "beam" may be replaced by other equivalent concepts and is not limited to the aforementioned concepts.

[0060] 2. Resources:

[0061] In communication protocols, reference signals are configured as resources. Network devices allocate each reference signal to terminal devices as a resource. A resource is a configuration information unit that typically includes parameters related to a reference signal, such as the reference signal's time-frequency resource location, number of ports, and time domain type (periodic, semi-static, or aperiodic).

[0062] The resources may be either uplink signal resources or downlink signal resources. Uplink signals include, but are not limited to, sounding reference signals (SRS) and demodulation reference signals (DMRS). Downlink signals include, but are not limited to, channel state information reference signals (CSI-RS), cell specific reference signals (CS-RS), user equipment specific reference signals (US-RS), demodulation reference signals (DMRS), and synchronization system / physical broadcast channel blocks (SS / PBCH blocks). SS / PBCH blocks may be referred to as synchronization signal blocks (SSBs).

[0063] Resources can be configured through radio resource control (RRC) messages. In terms of configuration structure, a resource is a data structure that includes relevant parameters of its corresponding uplink / downlink signal. For example, the type of uplink / downlink signal, the resource element that carries the uplink / downlink signal, the transmission time and period of the uplink / downlink signal, the number of ports used to send the uplink / downlink signal, etc. Each uplink / downlink signal resource has a unique identifier to identify the resource of the downlink signal. It is understandable that the identifier of the resource can also be referred to as the identifier of the resource, and the embodiments of the present disclosure do not impose any restrictions on this.

[0064] 3. Beam management:

[0065] 5G utilizes high-frequency communications, meaning it uses higher frequency bands such as 28 GHz to transmit data. A major issue with high-frequency communications is that signal energy decreases rapidly with transmission distance, resulting in a shorter transmission distance. To overcome this, high-frequency communications employ simulated beamforming technology. This technology weights the antenna array to concentrate signal energy within a smaller angular range, creating a beam-like signal (called a simulated beam, or simply beamform) that increases transmission distance.

[0066] Both network devices and terminal devices use beams for transmission. In downlink transmission, the beam used by the network device is called the downlink transmit beam, and the beam used by the terminal device is called the downlink receive beam. In uplink transmission, the beam used by the terminal device is called the uplink transmit beam, and the beam used by the network device is called the uplink receive beam. The specific beams used by network devices and terminal devices in downlink and uplink transmissions are determined through the beam management process.

[0067] Beam management refers to the process by which network devices and terminal devices acquire and maintain the set of beams used for transmission and reception. It is the reference workflow for beamforming in multiple input multiple output (MIMO) systems. For example, if the network device has M beams and the terminal device has N beams, the downlink beam management process is as follows:

[0068] 1) Beam sweeping: The process by which a network device or terminal device sequentially selects beams for transmission or reception in a specified scanning manner within a time period to cover a spatial area.

[0069] Specifically, the network device has M beams and the terminal device has N beams. The network device configures parameters related to downlink beam management for the terminal device, such as M measurement resources, a measurement period, and the like. The measurement resource can be a reference signal (RS) used for beam measurement. The M measurement resources correspond one-to-one to the M beams of the network device. The network device uses each beam to send the corresponding measurement resource. The terminal device measures the measurement resource to determine the quality of the beam corresponding to the measurement resource. It can be understood that the beam of the network device is invisible to the terminal device. The terminal device can determine the quality of each measurement resource, but the terminal device does not perceive which beam the measurement resource corresponds to.

[0070] 2) Beam measurement: The process by which a network device or terminal device measures the received beamformed signal.

[0071] Specifically, the channel quality corresponding to the beam of each network device and the beam of each terminal device is different. The terminal device needs to measure the channel quality between the beam of each network device and the beam of each terminal device, so as to determine which beam the network device uses to send and which beam the terminal device uses to receive. Specifically, in each measurement cycle, the network device uses the above-mentioned M beams to send the corresponding measurement resources in turn, and the terminal device uses one of the N beams to receive and measure to determine the channel quality between the beam used by the terminal device this time and the above-mentioned M beams, for example, the reference signal receiving power. In each measurement cycle, the terminal device uses different beams to receive and measure in turn. Through N measurement cycles, the channel quality between the N beams of the terminal device and the M beams of the network device can be determined.

[0072] 3) Beam reporting: The process in which the terminal device reports the beam measurement results to the terminal device.

[0073] Specifically, the terminal device can determine the best beam of the terminal device corresponding to each measurement resource, or the best receiving beam of the terminal device or the best receiving beam according to the channel quality through the above-mentioned beam measurement. The terminal device can report the information of the measurement resource corresponding to the best beam of the terminal device to the network device so that the network device can determine which beam the network device uses for transmission and which beam the terminal device uses for reception. For example, if the network device uses the beam corresponding to a certain measurement resource for downlink transmission, the terminal device will use the corresponding best beam for reception. The information of the measurement resource reported by the terminal device may include the identifiers and RSRPs of up to 4 measurement resources corresponding to the best beams of the terminal device. The network device can determine the beam of the network device corresponding to the measurement resource identifier reported by the terminal device based on the correspondence between M beams and M measurement resources. For example, the terminal device can determine through beam measurement that the four measurement resources with the best quality are RS#1, RS#2, RS#3, and RS#4, and the best beams of the terminal device corresponding to the four measurement resources are beam B3, beam B2, beam B2, and beam B1, respectively. That is, among the four measurement resources received by the terminal device using beam B1, RS#4 has the best quality. Among the four measurement resources received by the terminal device using beam B2, RS#2 and RS#3 have the best quality. Among the four measurement resources received by the terminal device using beam B3, RS#1 has the best quality. The terminal device can report to the network device the reference signal received power (RSRP) of RS#1, RS#2, RSRP2 corresponding to RS#2, RS#3, RSRP3 corresponding to RS#3, RS#4, and RSRP4 corresponding to RS#4.

[0074] 4) Beam determination: The process by which a network device or terminal device selects its transmit or receive beam.

[0075] The TCI indication configuration method, device, and storage medium provided by the embodiments of the present disclosure are described below with reference to FIG. 1 to FIG. 6 .

[0076] In the event of potential performance deterioration of the AI-based beam, the embodiments of the present disclosure provide a TCI indication configuration method, which ensures stable data transmission when the AI ​​model performance fluctuates by efficiently and quickly indicating appropriate and reliable beam information to the terminal.

[0077] FIG2 is a flow chart of a TCI indication configuration method applied to a terminal device according to an embodiment of the present disclosure. As shown in FIG2 , the TCI indication configuration method applied to the terminal device includes:

[0078] S211. Receive DCI sent by a network device.

[0079] When the AI ​​beam shows potential performance deterioration, for example, when some KPIs, such as the overall system throughput, AI model prediction accuracy, BLER, etc., become abnormal or decline, the terminal device receives the DCI sent by the network device, where the DCI contains indication information instructing the terminal device to switch modes.

[0080] S212: Indicate the first TCI state mode according to the DCI instruction; or select the first TCI state list or the second TCI state list according to the DCI instruction.

[0081] Exemplarily, the terminal device falls back to the default TCI state mode according to the instruction of the DCI sent by the network device; or the terminal device dynamically switches between the AI-based TCI state mode and the non-AI-based TCI state mode according to the instruction of the DCI sent by the network device. The first TCI state list and the second TCI state list can be either an AI-based TCI state mode or a non-AI-based TCI state mode, which is not limited here.

[0082] It should be noted that the network device implements the method of AI-based TCI state indication: through the AI ​​model deployed on the network device side and the terminal device side, the AI ​​model takes the measured reference signal quality as input, obtains the optimal reference signal index and reference signal quality of the entire set as output, and the base station uses the obtained AI-predicted optimal reference signal (beam) for subsequent uplink and downlink channels and reference signals. TCI state indication, where the source RS of the TCI state can be the above-mentioned optimal reference signal.

[0083] In an embodiment of the present disclosure, when an AI beam experiences potential performance degradation, a terminal device receives a DCI sent by a network device; the terminal device indicates a first TCI state mode based on the DCI; or the terminal device selects a first TCI state list or a second TCI state list based on the DCI. This solution can indicate a fallback TCI state when an AI beam experiences potential performance degradation. By efficiently and quickly providing the terminal with appropriate and reliable beam information, it ensures stable data transmission despite fluctuations in AI model performance.

[0084] The following uses a base station as the network device and a UE as the terminal device to illustrate the solution of the present disclosure. When the base station detects that some potential performance anomalies of the AI-based model have occurred, the base station can send a DCI to instruct the terminal to switch back to the default TCI state mode.

[0085] First, the default TCI state must be configured. The base station determines one or a group of default TCI states (different channels may use different default TCI states) for the UE's physical downlink shared channel (PDSCH), physical downlink control channel (PDCCH), CSI-RS, physical uplink shared channel (PUSCH), physical uplink control channel (PUCCH), and SRS through preset rules or RRC / MAC CE (Medium Access Control Control Element) configuration. Specific methods include:

[0086] 1. Based on the Unified TCI state:

[0087] 1. Set a default downlink (DL) Unified TCI state for PDSCH, PDCCH, CSI-RS, and / or set a default uplink (UL) Unified TCI state for PUSCH, PUCCH, SRS;

[0088] 2. Set a default Joint Unified TCI state for PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS;

[0089] 3. Default DL / UL Unified TCI state or Joint Unified TCI state definition based on preset rules:

[0090] 3.1、DL / Joint TCI state:

[0091] The SSB identified by the UE in the initial access process has a quasi co-located (QCL) relationship with the demodulation reference signal (DM-RS) of the PDSCH, the DM-RS of the PDCCH, and the CSI-RS;

[0092] In the random access procedure triggered by the synchronous reconfiguration procedure, the SSB or CSI-RS resource identified by the UE has a QCL relationship with the DM-RS of the PDSCH, the DM-RS of the PDCCH, and the CSI-RS;

[0093] 3.2、UL / Joint TCI state:

[0094] The UE assumes that the uplink transmit spatial filters of the PUSCH scheduled by the random access response (RAR) UL grant in the initial access procedure and the DM-RS of the PUSCH, the DM-RS of the PUCCH, and the SRS of the dynamic grant (DG) / configured grant (CG) are the same;

[0095] The UE assumes that the uplink transmit spatial filters of the PUSCH scheduled by the RAR UL grant and the DM-RS of the DG / CG PUSCH, the DM-RS of the PUCCH, and the SRS in the random access procedure triggered by the synchronous reconfiguration procedure are the same.

[0096] 2. Method based on R15 / R16 TCI state:

[0097] 1. The default TCI state of PDCCH, PUCCH, CSI-RS, and SRS is determined by the RRC configuration.

[0098] For each control resource set (CORESET), PUCCH resource or resource set, CSI-RS, and SRS, whether to follow the default TCI state can be determined through separate high-layer parameter configuration.

[0099] 2. PDSCH: When the transmission interval between the PDSCH transmission time and the PDCCH scheduling the PDSCH is less than the threshold timeDurationForQCL (waiting time threshold).

[0100] When the CC (component carrier) where the PDSCH is located is configured with a CORESET, the DMRS of the PDSCH and the RS of the QCL parameters of the CORESET with the smallest CORESET ID at the most recent time before the PDSCH is sent have a QCL relationship; when not configured, the PDSCH follows the TCI state corresponding to the minimum TCI state ID configured by RRC.

[0101] 3. PDSCH: When the transmission interval between the PDSCH transmission time and the PDCCH scheduling PDSCH is greater than or equal to the threshold timeDurationForQCL.

[0102] According to the TCI state corresponding to the CORESET corresponding to the PDCCH scheduling PDSCH.

[0103] 4. The TCI state of the PUSCH is determined according to the TCI state of its associated SRS.

[0104] 5. When the default TCI state corresponding to PDCCH, PDSCH, PUCCH, PUSCH, CSI-RS, or SRS is in effect, the corresponding channel or RS shall be used as the DL QCL and / or uplink transmit spatial filtering assumption according to the corresponding default TCI state.

[0105] The base station sends a DCI to instruct the terminal to switch back to the default TCI state mode. This can be achieved in the following ways:

[0106] 1. Indicated by a new 1-bit field in DCI

[0107] The UE falls back to the default TCI state mode through a newly added 1-bit field indication in the DCI.

[0108] When codepoint=1, the corresponding channel / RS of the UE is instructed to use the TCI state indicated by the TCI field as the DL QCL and / or uplink transmit spatial filtering assumption;

[0109] When codepoint = 0, the corresponding channel / RS of the UE is instructed to use the set default TCI state as the DL QCL and / or uplink transmit spatial filtering assumption, that is, switch back to the default TCI state mode;

[0110] If the DCI carries DL-SCH, the scheduled PDSCH will switch back to the default TCI state mode;

[0111] If the DCI carries UL-SCH, the PUSCH scheduled by it will switch back to the default TCI state mode.

[0112] In an optional example, the TCI field in the DCI may indicate at least one reliable beam determined based on a non-AI method, such as a wide beam.

[0113] Specifically, the DCI sending moment or a certain moment thereafter is used as the time dividing point, then the PDSCH, PDCCH, and CSI-RS between the DCI reception moment and the time dividing point are used as the DL QCL assumption according to the above-mentioned default DL Unified TCI state or the default Joint Unified TCI state, and the PUSCH, PUCCH, and SRS in between are used as the uplink transmission spatial filtering assumption according to the above-mentioned default UL Unified TCI state or the default Joint Unified TCI state; the PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS after the time dividing point are used as the DL QCL and / or uplink transmission spatial filtering assumption according to the TCI state indicated by the TCI field.

[0114] Among them, the above-mentioned time demarcation point can be the DCI sending time; or N1 slots after the DCI sending time; or the CSI reporting time corresponding to the BM-CSI reporting triggered by DCI for AI model performance monitoring (or N2 slots after the CSI reporting time); or N3 symbol / slots after the positive HARQ-ACK corresponding to the DCI.

[0115] In particular, for the above “N3 symbols / slots after the positive HARQ-ACK corresponding to the DCI”, the DCI is DCI format 1_1 / 1_2.

[0116] When the DCI does not include DL-SCH, the UE will send the positive HARQ-ACK corresponding to the DCI on PUCCH or PUSCH;

[0117] When the DCI includes DL-SCH, the UE will send the positive HARQ-ACK corresponding to the PDSCH scheduled by the DCI on the PUCCH or PUSCH.

[0118] 2. Indicated by special codepoint in TCI field in DCI

[0119] The base station can instruct the UE to fall back to the default TCI state mode through a special codepoint indication in the TCI field in the DCI.

[0120] When the terminal is configured to the first mode through high-layer parameters, when codepoint = a special value, such as 0, the corresponding channel / RS of the UE is instructed to use the set default TCI state as the DL QCL and / or uplink transmission spatial filtering assumption.

[0121] It should be noted that the above DCI can be DCI 0_1 / 0_2, DCI 1_1 / 1_2, DCI 2_0 / 2_1 / 2_2 / 2_3 / 2_4.

[0122] When the base station finds that the AI-based model has some potential performance anomalies, the base station can send a DCI to instruct the terminal to switch between the non-AI-based TCI state mode and the AI-based TCI state mode.

[0123] First, you must configure the TCI state pool as follows:

[0124] RRC configures two types of TCI state pools: the first type is used for AI-based TCI state indication, and the second type is used for non-AI-based TCI state indication;

[0125] a) Both the first and second categories can be based on the Unified TCI state framework;

[0126] b) Alternatively, both the first and second categories are based on the R15 / R16 TCI state framework;

[0127] c) Alternatively, the first category is based on the Unified TCI state framework, and the second category is based on the R15 / R16 TCI state framework;

[0128] d) Alternatively, the first category is based on the R15 / R16 TCI state framework, and the second category is based on the Unified TCI state framework.

[0129] The base station sends DCI to instruct the terminal to switch between non-AI based TCI state mode and AI based TCI state mode. This can be achieved in the following ways:

[0130] 1. One MAC CE activates N or N groups of TCI states from the TCI state pool of the first category above.

[0131] a) In the case of "N groups of TCI states", at least one TCI state in each group is used for a downlink channel / signal, and the remaining at least one TCI state is used for an uplink channel / signal;

[0132] b) Optionally, another type of MAC CE may activate N or N groups of TCI states from the second type of TCI state pool, with similar meanings;

[0133] 2. DCI contains two TCI fields, corresponding to the two types of TCI state pools mentioned above;

[0134] a) At the same time, DCI also has a field used to indicate which TCI field of the above two TCI fields is valid. The UE will ignore the remaining ineffective TCI field.

[0135] The DCI contains two TCI fields, corresponding to the first type TCI state pool and the second type TCI state pool respectively. According to the field in the DCI used to indicate the effectiveness of the TCI field, one TCI field is executed and the remaining ineffective TCI field is ignored.

[0136] 3. DCI has a 1-bit field that indicates which of the two TCI state pools the TCI field in DCI corresponds to.

[0137] The TCI field is executed based on the field in the DCI used to indicate whether the TCI field in the DCI corresponds to the first type TCI state pool or the second type TCI state pool.

[0138] a) When codepoint = 0, the TCI field corresponds to the first type TCI state pool;

[0139] b) When codepoint = 1, the TCI field corresponds to the second type of TCI state pool.

[0140] In an optional embodiment of the present disclosure, the DCI sent by the terminal device can also be used to trigger aperiodic CSI reporting for beamforming, which can be used to monitor AI model performance. The reported quantity of the CSI report includes at least one of 'cri-RSRP', 'ssb-Index-RSRP', 'cri-RSRP-Index', and 'ssb-Index-RSRP-Index'.

[0141] FIG3 is a block diagram of a terminal device provided in an embodiment of the present disclosure. As shown in FIG3 , the terminal device 300 includes:

[0142] The receiving module 301 is configured to receive DCI sent by a network device;

[0143] The fallback module 302 is configured to indicate the first TCI state mode according to the indication of the DCI; or is configured to select the first TCI state list or the second TCI state list according to the indication of the DCI.

[0144] In some embodiments, the terminal device 300 further includes:

[0145] The configuration module 303 is configured to determine one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS according to a preset rule or base station configuration.

[0146] In some embodiments, the configuration module 303 is further configured to: the base station configures one or a group of DL Unified TCI states for at least one of PDSCH, PDCCH, and CSI-RS, and / or the base station configures one or a group of UL Unified TCI states for at least one of PUSCH, PUCCH, and SRS.

[0147] In some embodiments, the configuration module 303 is further configured to:

[0148] The base station configures one or a group of Joint Unified TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS.

[0149] In some embodiments, the configuration module 303 is further configured to do at least one of the following:

[0150] The SSB identified in the initial access procedure has a QCL relationship with at least one of the DM-RS of the PDSCH, the DM-RS of the PDCCH, and the CSI-RS;

[0151] In a random access procedure triggered by a synchronous reconfiguration procedure, the identified SSB or CSI-RS resource has a QCL relationship with at least one of the DM-RS of the PDSCH, the DM-RS of the PDCCH, and the CSI-RS;

[0152] Assume that the uplink transmit spatial filter of at least one of the PUSCH scheduled by the RAR UL grant in the initial access procedure and the DM-RS of the DG / CG PUSCH, the DM-RS of the PUCCH, and the SRS is the same;

[0153] It is assumed that the uplink transmit spatial filter of at least one of the PUSCH scheduled by the RAR UL grant and the DM-RS of the DG / CG PUSCH, the DM-RS of the PUCCH, and the SRS in the random access procedure triggered by the synchronous reconfiguration procedure is the same.

[0154] In some embodiments, the configuration module 303 is further configured to: determine the default TCI state of at least one of PDCCH, PUCCH, CSI-RS, and SRS according to the RRC configuration; when the transmission interval between the transmission time of PDSCH and the PDCCH that schedules PDSCH is less than the threshold timeDurationForQCL, when the CC where the PDSCH is located is configured with CORESET, the DMRS of the PDSCH and the RS about the QCL parameter of the CORESET with the smallest CORESET ID at the most recent CORESET configured time before the PDSCH transmission time have a QCL relationship; when the CC where the PDSCH is located is not configured with CORESET, the PDSCH determines the TCI state according to the TCI state corresponding to the minimum TCI state ID configured by RRC; when the transmission interval between the transmission time of PDSCH and the PDCCH that schedules PDSCH is greater than or equal to the threshold timeDurationForQCL, the TCI state is determined according to the TCI state corresponding to the CORESET corresponding to the PDCCH that schedules PDSCH; the TCI state of the PUSCH is determined according to the TCI of the SRS associated with the PUSCH. state is determined; when the TCI state corresponding to at least one of PDCCH, PDSCH, PUCCH, PUSCH, CSI-RS, and SRS is effective, the corresponding channel or RS is used as the DL QCL and / or uplink transmission spatial filtering assumption according to the corresponding default TCI state.

[0155] In some embodiments, the fallback module 302 includes:

[0156] The first fallback module is configured to indicate whether to apply the first TCI state mode through a 1-bit field indication in the DCI; or is configured to indicate whether to apply the first TCI state mode through a preset codepoint indication in the TCI field in the DCI.

[0157] In some embodiments, indicating that the first TCI state mode is applied by indicating through a 1-bit field in the DCI includes:

[0158] When codepoint=1, the corresponding channel / RS uses the TCI state indicated by the TCI field as the DL QCL and / or uplink transmit spatial filtering assumption;

[0159] When codepoint = 0, the TCI state determined by the preset rule or base station configuration for the corresponding channel / RS is used as the DL QCL and / or uplink transmit spatial filtering assumption;

[0160] The TCI field in the DCI indicates at least one TCI state.

[0161] In some embodiments, when codepoint=0, the TCI state of the corresponding channel / RS determined according to a preset rule or base station configuration is used as the DL QCL and / or uplink transmit spatial filtering hypothesis, including at least one of the following:

[0162] If the DCI carries DL-SCH, the scheduled PDSCH will use the TCI state determined by the preset rules or base station configuration as the DL QCL assumption;

[0163] If the DCI carries UL-SCH, the PUSCH scheduled by it will use the TCI state determined by the preset rules or base station configuration as the uplink transmission spatial filtering hypothesis.

[0164] In some embodiments, the TCI field in the DCI indicates at least one TCI state, including at least one of the following:

[0165] A time at or after the DCI transmission time is used as a time demarcation point, and at least one of the PDSCH, PDCCH, and CSI-RS between the DCI reception time and the time demarcation point is used as a DL QCL assumption according to the DL Unified TCI state or the Joint Unified TCI state, and at least one of the PUSCH, PUCCH, and SRS therebetween is used as an uplink transmit spatial filtering assumption according to the UL Unified TCI state or the Joint Unified TCI state;

[0166] At least one of the PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS after the time demarcation point is used as a DL QCL and / or uplink transmission spatial filtering assumption according to the TCI state indicated by the TCI field.

[0167] In some embodiments, the time demarcation point is the DCI sending moment; or, the time demarcation point is N1 slots after the DCI sending moment; or, the time demarcation point is the CSI reporting moment corresponding to the CSI reporting for performance monitoring triggered by DCI; or, the time demarcation point is N2 slots after the CSI reporting moment corresponding to the CSI reporting for performance monitoring triggered by DCI; or, the time demarcation point is N3 symbol / slots after the positive HARQ-ACK corresponding to the DCI.

[0168] In some embodiments, when the time demarcation point is N3 symbols / slots after the positive HARQ-ACK corresponding to the DCI, the DCI is DCI format 1_1 / 1_2,

[0169] When the DCI does not include DL-SCH, the positive HARQ-ACK corresponding to the DCI is sent on the PUCCH or PUSCH;

[0170] When the DCI includes the DL-SCH, the positive HARQ-ACK corresponding to the PDSCH scheduled by the DCI is sent on the PUCCH or PUSCH.

[0171] In some embodiments, the receiving module 301 is further configured to receive an RRC configuration sent by a network device, where the RRC configuration includes a first TCI state list and a second TCI state list.

[0172] In some embodiments, one MAC CE activates N or N groups of TCI states from the first TCI state list.

[0173] In some embodiments, the rollback module 302 further includes:

[0174] The second fallback module is configured to include two TCI fields in the DCI, corresponding to the first TCI state list and the second TCI state list respectively; according to the indication field in the DCI used to indicate the effectiveness of the TCI field, one TCI field is effective and the remaining ineffective TCI field is ignored; or

[0175] According to an indication field in the DCI used to indicate that the TCI field corresponds to the first TCI state list or the second TCI state list, it is determined that the TCI field in the DCI is associated with the corresponding TCI state list.

[0176] In some embodiments, the terminal device 300 further includes:

[0177] The reporting module is configured to trigger aperiodic CSI reporting according to an instruction of the DCI.

[0178] In some embodiments, the reported amount of the CSI report includes at least one of 'cri-RSRP', 'ssb-Index-RSRP', 'cri-RSRP-Index', and 'ssb-Index-RSRP-Index'.

[0179] FIG4 is a structural block diagram of a network device provided in an embodiment of the present disclosure. As shown in FIG4 , the network device 400 includes:

[0180] The sending module 401 is configured to send DCI to the terminal;

[0181] The indication module 402 is configured to indicate the first TCI state mode of the terminal; or is configured to indicate the terminal to select the first TCI state list or the second TCI state list.

[0182] In some embodiments, the network device 400 further includes:

[0183] The configuration module 403 is configured to determine one or a group of TCI states used by the terminal for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS through preset rules, RRC or MAC CE configuration.

[0184] In some embodiments, the configuration module 403 is further configured to:

[0185] One or a group of DL Unified TCI states are configured for at least one of PDSCH, PDCCH, and CSI-RS, and / or one or a group of UL Unified TCI states are configured for at least one of PUSCH, PUCCH, and SRS.

[0186] In some embodiments, the configuration module 403 is further configured to: configure one or a group of Joint Unified TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS.

[0187] In some embodiments, the configuration module 403 is further configured to:

[0188] The SSB identified by the terminal in the initial access process has a QCL relationship with at least one of the DM-RS of the PDSCH, the DM-RS of the PDCCH, and the CSI-RS; the SSB or CSI-RS resource identified by the terminal in the random access process triggered by the synchronous reconfiguration process has a QCL relationship with at least one of the DM-RS of the PDSCH, the DM-RS of the PDCCH, and the CSI-RS; the terminal assumes that the uplink transmission spatial filter of the PUSCH scheduled by the RAR UL grant in the initial access process is the same as that of the DM-RS of the DG / CG PUSCH, the DM-RS of the PUCCH, and the SRS; the terminal assumes that the uplink transmission spatial filter of the PUSCH scheduled by the RAR UL grant in the random access process triggered by the synchronous reconfiguration process is the same as that of the DM-RS of the DG / CG PUSCH, the DM-RS of the PUCCH, and the SRS.

[0189] In some embodiments, the configuration module 403 is further configured to: determine the default TCI state of at least one of PDCCH, PUCCH, CSI-RS, and SRS according to the RRC configuration; when the transmission interval between the transmission time of PDSCH and the PDCCH that schedules PDSCH is less than the threshold timeDurationForQCL, when the CC where the PDSCH is located is configured with CORESET, the DMRS of the PDSCH and the RS about the QCL parameter of the CORESET with the smallest CORESET ID at the most recent CORESET configured moment before the PDSCH transmission time have a QCL relationship; when the CC where the PDSCH is located is not configured with CORESET, the PDSCH determines the TCI state according to the TCI state corresponding to the minimum TCI state ID configured by RRC; when the transmission interval between the transmission time of PDSCH and the PDCCH that schedules PDSCH is greater than or equal to the threshold timeDurationForQCL, the TCI state is determined according to the TCI state corresponding to the CORESET corresponding to the PDCCH that schedules PDSCH; the TCI state of the PUSCH is determined according to the TCI of the SRS associated with the PUSCH. state is determined; when the TCI state corresponding to at least one of PDCCH, PDSCH, PUCCH, PUSCH, CSI-RS, and SRS is effective, the corresponding channel or RS is used as the DL QCL and / or uplink transmission spatial filtering assumption according to the corresponding default TCI state.

[0190] In some embodiments, the indication module 402 includes:

[0191] The first indication module is configured to indicate whether the terminal applies the first TCI state mode through a 1-bit field indication in the DCI; or is configured to indicate whether the terminal applies the first TCI state mode through a preset codepoint indication in the TCI field in the DCI.

[0192] In some embodiments, indicating whether the terminal applies the first TCI state mode by indicating through a 1-bit field in the DCI includes:

[0193] When codepoint=1, the corresponding channel / RS of the terminal is instructed to use the TCI state indicated by the TCI field as the DL QCL and / or uplink transmit spatial filtering assumption;

[0194] When codepoint=0, the corresponding channel / RS of the terminal is instructed to use the TCI state determined by the preset rule or the base station configuration as the DL QCL and / or uplink transmit spatial filtering assumption;

[0195] The TCI field in the DCI indicates at least one TCI state.

[0196] In some embodiments, when codepoint=0, the TCI state of the corresponding channel / RS determined according to a preset rule or base station configuration is used as the DL QCL and / or uplink transmit spatial filtering hypothesis, including at least one of the following:

[0197] If the DCI carries DL-SCH, the scheduled PDSCH will use the TCI state determined by the preset rules or base station configuration as the DL QCL assumption;

[0198] If the DCI carries UL-SCH, the PUSCH scheduled by it will use the TCI state determined by the preset rules or base station configuration as the uplink transmission spatial filtering hypothesis.

[0199] In some embodiments, the TCI field in the DCI indicates at least one TCI state, including at least one of the following:

[0200] A time at or after the DCI transmission time is used as a time demarcation point, and at least one of the PDSCH, PDCCH, and CSI-RS between the DCI reception time and the time demarcation point is used as a DL QCL assumption according to the DL Unified TCI state or the Joint Unified TCI state, and at least one of the PUSCH, PUCCH, and SRS therebetween is used as an uplink transmit spatial filtering assumption according to the UL Unified TCI state or the Joint Unified TCI state;

[0201] At least one of the PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS after the time demarcation point is used as a DL QCL and / or uplink transmission spatial filtering assumption according to the TCI state indicated by the TCI field.

[0202] In some embodiments, the time demarcation point is the DCI sending moment; or, the time demarcation point is N1 slots after the DCI sending moment; or, the time demarcation point is the CSI reporting moment corresponding to the CSI reporting for performance monitoring triggered by DCI; or, the time demarcation point is N2 slots after the CSI reporting moment corresponding to the CSI reporting for performance monitoring triggered by DCI; or, the time demarcation point is N3 symbol / slots after the positive HARQ-ACK corresponding to the DCI.

[0203] In some embodiments, when the time demarcation point is N3 symbols / slots after the positive HARQ-ACK corresponding to the DCI, the DCI is DCI format 1_1 / 1_2,

[0204] When the DCI does not include DL-SCH, the positive HARQ-ACK corresponding to the DCI is sent on the PUCCH or PUSCH;

[0205] When the DCI includes the DL-SCH, the positive HARQ-ACK corresponding to the PDSCH scheduled by the DCI is sent on the PUCCH or PUSCH.

[0206] In some embodiments, the sending module 401 is further configured to: send an RRC configuration to the terminal, where the RRC configuration includes a first TCI state list and a second TCI state list.

[0207] In some embodiments, one MAC CE activates N or N groups of TCI states from the first TCI state list.

[0208] In some embodiments, the indication module 402 further includes:

[0209] The second indication module is configured to include two TCI fields in the DCI, corresponding to the first TCI state list and the second TCI state list respectively; instruct the terminal to take effect according to the indication field in the DCI used to indicate that the TCI field is effective, and ignore the other remaining ineffective TCI field; or according to an indication field in the DCI used to indicate that the TCI field corresponds to the first TCI state list or the second TCI state list, instruct the terminal to determine that the TCI field in the DCI is associated with the corresponding TCI state.

[0210] In some embodiments, the network device 400 further includes:

[0211] The monitoring module is configured to instruct the terminal to trigger aperiodic CSI reporting through DCI.

[0212] In some embodiments, the reported amount of the CSI report includes at least one of 'cri-RSRP', 'ssb-Index-RSRP', 'cri-RSRP-Index', and 'ssb-Index-RSRP-Index'.

[0213] The implementation process of the functions and effects of each module in the above-mentioned device is specifically described in the implementation process of the corresponding steps in the above-mentioned method, and will not be repeated here.

[0214] An embodiment of the present disclosure also provides an electronic device, comprising: at least one processor; a memory for storing instructions executable by at least one processor; wherein the at least one processor is used to execute instructions to implement the steps of the above-mentioned method applied in the embodiment of the present disclosure.

[0215] Figure 5 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure. As shown in Figure 5, the electronic device 500 includes at least one processor 501 and a memory 502 coupled to the processor 501. The processor 501 can execute the corresponding steps in the above-mentioned method applied in the embodiment of the present disclosure.

[0216] The processor 501 can also be referred to as a central processing unit (CPU), which can be an integrated circuit chip with signal processing capabilities. Each step in the above-mentioned method applied in the embodiment of the present disclosure can be completed by the hardware integrated logic circuit in the processor 501 or by instructions in the form of software. The processor 501 can be a general-purpose processor, a digital signal processor (DSP), an ASIC, a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method applied in conjunction with the embodiment of the present disclosure can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in the memory 502, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, or other mature storage media in the art. The processor 501 reads the information in the memory 502 and completes the steps of the above-mentioned method in combination with its hardware.

[0217] In addition, when various operations / processes according to the present disclosure are implemented through software and / or firmware, the programs constituting the software can be installed from a storage medium or a network to a computer system having a dedicated hardware structure, for example, the computer system 600 shown in FIG6 . When the various programs are installed, the computer system can perform various functions, including those described above. FIG6 is a schematic diagram of the structure of an exemplary computer system provided by an embodiment of the present disclosure.

[0218] Computer system 600 is intended to represent various forms of digital electronic computer equipment, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. Electronic equipment can also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0219] As shown in FIG6 , a computer system 600 includes a computing unit 601, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) 602 or a computer program loaded from a storage unit 608 into a random access memory (RAM) 603. Various programs and data required for the operation of the computer system 600 may also be stored in the RAM 603. The computing unit 601, the ROM 602, and the RAM 603 are connected to each other via a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0220] Multiple components within computer system 600 are connected to I / O interface 605, including an input unit 606, an output unit 607, a storage unit 608, and a communication unit 609. Input unit 606 can be any type of device capable of inputting information into computer system 600. Input unit 606 can receive input numeric or character information and generate key input signals related to user settings and / or function control of an electronic device. Output unit 607 can be any type of device capable of presenting information and may include, but is not limited to, a display, a speaker, a video / audio output terminal, a vibrator, and / or a printer. Storage unit 608 may include, but is not limited to, a magnetic disk or an optical disk. Communication unit 609 allows computer system 600 to exchange information / data with other devices over a network, such as the Internet, and may include, but is not limited to, a modem, a network card, an infrared communication device, a wireless communication transceiver, and / or a chipset, such as a Bluetooth™ device, a WiFi device, a WiMax device, a cellular communication device, and / or the like.

[0221] The computing unit 601 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 601 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various computing units for running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The computing unit 601 performs the various methods and processes described above. For example, in some embodiments, the above-mentioned method applied for in the embodiments of the present disclosure may be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit 608. In some embodiments, part or all of the computer program may be loaded and / or installed on an electronic device via ROM 602 and / or communication unit 609. In some embodiments, the computing unit 601 may be configured to perform the above-mentioned method of the embodiments of the present disclosure by any other appropriate means (e.g., by means of firmware).

[0222] An embodiment of the present disclosure provides a computer-readable storage medium, which stores one or more programs. The one or more programs can be executed by one or more processors to implement the above-mentioned TCI indication configuration method.

[0223] The computer-readable storage medium may be a volatile memory, such as a random-access memory (RAM); or a non-volatile memory, such as a read-only memory (ROM), a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); or may be a device including one or any combination of the above memories, such as a mobile phone, a computer, a tablet device, a personal digital assistant, etc.

[0224] It should be noted that the computer-readable storage medium mentioned above in the present disclosure may be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, device, or device. In the present disclosure, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium may be transmitted using any suitable medium, including but not limited to wires, optical cables, RF (radio frequency), etc., or any suitable combination thereof.

[0225] In embodiments of the present disclosure, computer program code for performing the operations of the present disclosure may be written in one or more programming languages ​​or a combination thereof, including but not limited to object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the computer, partially on the computer, as a separate software package, partially on the computer and partially on a remote computer, or entirely on the remote computer or server. In cases involving a remote computer, the remote computer may be connected to the computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0226] The modules, components, or units described in the embodiments of the present disclosure may be implemented in software or hardware. The names of the modules, components, or units do not necessarily limit the modules, components, or units themselves.

[0227] The functions described above in this document may be at least partially performed by one or more hardware logic components. For example, and without limitation, exemplary hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system on chip (SOCs), complex programmable logic devices (CPLDs), etc.

[0228] It should be noted that, in this document, terms such as "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0229] The foregoing description is intended only to provide specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments described herein, but rather to be construed in the broadest manner consistent with the principles and novel features claimed herein.

Claims

1. A TCI indication configuration method, applied to a terminal device, the method comprising: Receiving DCI sent by a network device; Indicating a first TCI state mode according to the indication of the DCI; Or Selecting a first TCI state list or a second TCI state list according to the indication of the DCI.

2. The method according to claim 1 further comprises: Determining one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS according to a preset rule or base station configuration.

3. The method according to claim 2, wherein, The determining one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS according to a preset rule or base station configuration includes: The base station configures one or a group of DL Unified TCI states for at least one of PDSCH, PDCCH, and CSI-RS, and / or The base station configures one or a group of UL Unified TCI states for at least one of PUSCH, PUCCH, and SRS.

4. The method according to claim 2, wherein The determining one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS according to a preset rule or base station configuration includes: The base station configures one or a group of Joint Unified TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS.

5. The method according to claim 2, wherein The determining one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS according to a preset rule or base station configuration includes at least one of the following: The SSB identified in the initial access procedure has a QCL relationship with at least one of the DM-RS of PDSCH, the DM-RS of PDCCH, and CSI-RS; In the random access procedure triggered by the resynchronization reconfiguration procedure, the identified SSB or CSI-RS resource has a QCL relationship with at least one of the DM-RS of PDSCH, the DM-RS of PDCCH, and CSI-RS; Assume that the uplink transmission spatial filter of the PUSCH scheduled by the RAR UL grant in the initial access procedure is the same as at least one of the DM-RS of DG / CG PUSCH, the DM-RS of PUCCH, and SRS; Assume that the uplink transmission spatial filter of the PUSCH scheduled by the RAR UL grant in the random access procedure triggered by the resynchronization reconfiguration procedure is the same as at least one of the DM-RS of DG / CG PUSCH, the DM-RS of PUCCH, and SRS.

6. The method according to claim 2, wherein, The determining one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS according to a preset rule or base station configuration includes at least one of the following: Determine the TCI state of at least one of PDCCH, PUCCH, CSI-RS, and SRS according to the RRC configuration; When the transmission interval between the transmission time of PDSCH and the PDCCH scheduling PDSCH is less than the threshold timeDurationForQCL, when the carrier cell CC where PDSCH is located is configured with a CORESET, the DMRS of PDSCH and the RS with respect to the QCL parameter of the CORESET with the smallest CORESET ID at the nearest moment when a CORESET is configured before the PDSCH transmission time have a QCL relationship; when the CC where PDSCH is located is not configured with a CORESET, PDSCH determines the TCI state according to the TCI state corresponding to the smallest TCI state ID configured by RRC; When the transmission interval between the transmission time of PDSCH and the PDCCH scheduling PDSCH is greater than or equal to the threshold timeDurationForQCL, determine the TCI state according to the TCI state corresponding to the CORESET corresponding to the PDCCH scheduling PDSCH; The TCI state of PUSCH is determined according to the TCI state of the SRS associated with PUSCH; When the TCI state corresponding to at least one of PDCCH, PDSCH, PUCCH, PUSCH, CSI-RS, and SRS becomes effective, the corresponding channel or reference signal RS uses the corresponding TCI state as the DL QCL and / or uplink transmission spatial filtering assumption.

7. The method according to any one of claims 1 - 6, wherein The indication of the first TCI state mode according to the indication of DCI includes: Indicating whether to apply the first TCI state mode through a 1-bit field in DCI; or Indicating to apply the first TCI state mode through a preset codepoint in the TCI field in DCI.

8. The method according to claim 7, wherein, The indication through a 1-bit field in DCI indicating whether to apply the first TCI state mode includes: When the codepoint = 1, the corresponding channel / RS uses the TCI state indicated by the TCI field as the DL QCL and / or uplink transmission spatial filtering assumption; When the codepoint = 0, the corresponding channel / RS uses the TCI state determined according to the preset rule or the base station configuration as the DL QCL and / or uplink transmission spatial filtering assumption; The TCI field in DCI indicates at least one TCI state.

9. The method according to claim 8, wherein The case where when the codepoint = 0, the corresponding channel / RS uses the TCI state determined according to the preset rule or the base station configuration as the DL QCL and / or uplink transmission spatial filtering assumption includes at least one of the following: If the DCI carries the DL-SCH, the PDSCH scheduled by it uses the TCI state determined according to the preset rule or the base station configuration as the DL QCL assumption; If the DCI carries the UL-SCH, the PUSCH scheduled by it uses the TCI state determined according to the preset rule or the base station configuration as the uplink transmission spatial filtering assumption.

10. The method according to claim 8, wherein The TCI field in the DCI indicates at least one TCI state, including at least one of the following: Taking a certain moment at or after the DCI transmission moment as the time demarcation point, at least one of the PDSCH, PDCCH, and CSI-RS between the DCI reception moment and the time demarcation point uses the DL Unified TCI state or the Joint Unified TCI state as the DL QCL assumption, and at least one of the PUSCH, PUCCH, and SRS between them uses the UL Unified TCI state or the Joint Unified TCI state as the uplink transmission spatial filtering assumption; At least one of the PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS after the time demarcation point uses the TCI state indicated by the TCI field as the DL QCL and / or uplink transmission spatial filtering assumption.

11. The method according to claim 10, wherein, The time demarcation point is the DCI transmission moment; or, the time demarcation point is N1 slots after the DCI transmission moment; or, the time demarcation point is the CSI reporting moment corresponding to the CSI reporting for performance monitoring triggered by the DCI; or, the time demarcation point is N2 slots after the CSI reporting moment corresponding to the CSI reporting for performance monitoring triggered by the DCI; Or, the time demarcation point is N3 symbols / slots after the positive HARQ-ACK corresponding to the DCI.

12. The method according to claim 11, wherein, When the time demarcation point is N3 symbols / slots after the positive HARQ-ACK corresponding to the DCI, the DCI is DCI format 1_1 / 1_2, When the DCI does not include the DL-SCH, the positive HARQ-ACK corresponding to the DCI is sent on the PUCCH or PUSCH; When the DCI includes the DL-SCH, the positive HARQ-ACK corresponding to the PDSCH scheduled by the DCI is sent on the PUCCH or PUSCH.

13. The method according to any one of claims 1-12, further comprising: Receiving an RRC configuration sent by a network device, where the RRC configuration includes a first TCI state list and a second TCI state list.

14. The method according to claim 13, wherein, One MAC CE activates N or N groups of TCI states from the first TCI state list.

15. The method according to claim 13 or 14, wherein, Said selecting the first TCI state list or the second TCI state list according to the indication of DCI includes: There are two TCI fields in DCI, corresponding to the first TCI state list and the second TCI state list respectively; according to the indication field in DCI for indicating the effective TCI field, one TCI field becomes effective and the other remaining ineffective TCI field is ignored; or According to an indication field in DCI for indicating whether the TCI field corresponds to the first TCI state list or the second TCI state list, determine that the TCI field in DCI is associated with the corresponding TCI state list.

16. The method according to any one of claims 1-15, further comprising: Triggering an aperiodic CSI report according to the indication of DCI.

17. The method according to claim 16, wherein The reporting amount of the CSI report includes at least one of 'cri-RSRP','ssb-Index-RSRP', 'cri-RSRP-Index','ssb-Index-RSRP-Index'.

18. A TCI indication configuration method, applied to a network device, the method comprising: Sending DCI to a terminal; Indicating the first TCI state mode to the terminal; Or Indicating the terminal to select the first TCI state list or the second TCI state list.

19. The method according to claim 18, further comprising: Determine one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, SRS of the terminal through preset rules, RRC or MAC CE configuration.

20. The method according to claim 19, wherein, Said determining one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, SRS of the terminal through preset rules, RRC or MAC CE configuration includes: Configuring one or a group of DL Unified TCI states for at least one of PDSCH, PDCCH, CSI-RS, and / or Configuring one or a group of UL Unified TCI states for at least one of PUSCH, PUCCH, SRS.

21. The method according to claim 19, wherein Said determining one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, SRS of the terminal through preset rules, RRC or MAC CE configuration includes: Configuring one or a group of Joint Unified TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, SRS.

22. The method according to claim 19, wherein, One or a set of TCI states for the terminal to be used for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS determined through preset rules, RRC, or MAC CE configuration includes at least one of the following: The SSB identified by the terminal in the initial access procedure has a QCL relationship with at least one of the DM-RS of PDSCH, the DM-RS of PDCCH, and CSI-RS; The SSB or CSI-RS resource identified by the terminal in the random access procedure triggered by the synchronous reconfiguration procedure has a QCL relationship with at least one of the DM-RS of PDSCH, the DM-RS of PDCCH, and CSI-RS; The terminal assumes that the uplink transmission spatial filters of the PUSCH scheduled by the RAR UL grant in the initial access procedure are the same as at least one of the DM-RS of DG / CG PUSCH, the DM-RS of PUCCH, and SRS; The terminal assumes that the uplink transmission spatial filters of the PUSCH scheduled by the RAR UL grant in the random access procedure triggered by the synchronous reconfiguration procedure are the same as at least one of the DM-RS of DG / CG PUSCH, the DM-RS of PUCCH, and SRS.

23. The method according to claim 19, wherein One or a set of TCI states for the terminal to be used for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS determined through preset rules, RRC, or MAC CE configuration includes at least one of the following: Determine the TCI state of at least one of PDCCH, PUCCH, CSI-RS, and SRS according to the RRC configuration; When the transmission interval between the transmission time of PDSCH and the PDCCH scheduling PDSCH is less than the threshold timeDurationForQCL, when the carrier cell (Component Carrier, CC) where PDSCH is located is configured with a CORESET, the DMRS of PDSCH and the RS regarding the QCL parameter of the CORESET with the smallest CORESET ID at the nearest moment before the PDSCH transmission time and configured with a CORESET have a QCL relationship; when the CC where PDSCH is located is not configured with a CORESET, PDSCH determines the TCI state according to the TCI state corresponding to the smallest TCI state ID configured by RRC; When the transmission interval between the transmission time of PDSCH and the PDCCH scheduling PDSCH is greater than or equal to the threshold timeDurationForQCL, determine the TCI state according to the TCI state corresponding to the CORESET corresponding to the PDCCH scheduling PDSCH; The TCI state of PUSCH is determined according to the TCI state of the SRS associated with PUSCH; When at least one of the TCI states corresponding to PDCCH, PDSCH, PUCCH, PUSCH, CSI-RS, and SRS becomes effective, the corresponding channel or RS uses the corresponding TCI state as the DL QCL and / or uplink transmission spatial filtering assumption.

24. The method according to any one of claims 18 - 23, wherein, The indication of the terminal's first TCI state mode includes: Indicating whether the terminal applies the first TCI state mode through a 1-bit field in the DCI; or Indicating that the terminal applies the first TCI state mode through a preset codepoint in the TCI field of the DCI.

25. The method according to claim 24, wherein, The indication through a 1-bit field in the DCI, indicating whether the terminal applies the first TCI state mode, includes: When the codepoint = 1, indicating that the corresponding channel / RS of the terminal uses the TCI state indicated by the TCI field as the DL QCL and / or uplink transmission spatial filtering assumption; When the codepoint = 0, indicating that the corresponding channel / RS of the terminal uses the TCI state determined according to the preset rule or the base station configuration as the DL QCL and / or uplink transmission spatial filtering assumption; The TCI field in the DCI indicates at least one TCI state.

26. The method according to claim 25, wherein When the codepoint = 0, the corresponding channel / RS uses the TCI state determined according to the preset rule or the base station configuration as the DL QCL and / or uplink transmission spatial filtering assumption, including at least one of the following: If the DCI carries DL-SCH, the scheduled PDSCH will use the TCI state determined according to the preset rule or the base station configuration as the DL QCL assumption; If the DCI carries UL-SCH, the scheduled PUSCH will use the TCI state determined according to the preset rule or the base station configuration as the uplink transmission spatial filtering assumption.

27. The method according to claim 25, wherein, The TCI field in the DCI indicates at least one TCI state, including at least one of the following: Taking a certain moment at or after the DCI transmission moment as the time demarcation point, at least one of PDSCH, PDCCH, and CSI-RS between the DCI reception moment and the time demarcation point uses the DL Unified TCI state or Joint Unified TCI state as the DL QCL assumption, and at least one of PUSCH, PUCCH, and SRS between them uses the UL Unified TCI state or Joint Unified TCI state as the uplink transmission spatial filtering assumption; At least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS after the time demarcation point uses the TCI state indicated by the TCI field as the DL QCL and / or uplink transmission spatial filtering assumption.

28. The method according to claim 27, wherein, the time demarcation point is the DCI transmission time; or, the time demarcation point is N1 slots after the DCI transmission time; or, the time demarcation point is the CSI reporting time corresponding to the CSI reporting for performance monitoring triggered by the DCI; or, the time demarcation point is N2 slots after the CSI reporting time corresponding to the CSI reporting for performance monitoring triggered by the DCI; or, the time demarcation point is N3 symbols / slots after the positive HARQ-ACK corresponding to the DCI.

29. The method according to claim 28, wherein, When the time demarcation point is N3 symbols / slots after the positive HARQ-ACK corresponding to the DCI, the DCI is DCI format 1_1 / 1_2, when the DCI does not include DL-SCH, the positive HARQ-ACK corresponding to the DCI is sent on the PUCCH or PUSCH; when the DCI includes DL-SCH, the positive HARQ-ACK corresponding to the PDSCH scheduled by the DCI is sent on the PUCCH or PUSCH.

30. The method according to claim 18, further comprising: sending an RRC configuration to the terminal, the RRC configuration including a first TCI state list and a second TCI state list.

31. The method according to claim 30, wherein, one MAC CE activates N or N groups of TCI states from the first TCI state list.

32. The method according to claim 30 or 31, wherein The indication for the terminal to select the first TCI state list or the second TCI state list includes: the DCI contains two TCI fields, corresponding to the first TCI state list and the second TCI state list respectively; indicating that the terminal, according to the indication field used to indicate the effectiveness of the TCI field in the DCI, makes one TCI field effective and ignores the remaining ineffective TCI field; or according to an indication field in the DCI used to indicate whether the TCI field corresponds to the first TCI state list or the second TCI state list, indicating that the terminal determines the association between the TCI field in the DCI and the corresponding TCI state.

33. The method according to claim 18, further comprising: indicating to the terminal to trigger an aperiodic CSI report through the DCI.

34. The method according to claim 33, wherein, the reporting amount of the CSI report includes at least one of 'cri-RSRP','ssb-Index-RSRP', 'cri-RSRP-Index','ssb-Index-RSRP-Index'.

35. A terminal device, comprising: a receiving module configured to receive DCI sent by a network device; A fallback module, configured to indicate a first TCI state mode according to an indication of DCI; or configured to select a first TCI state list or a second TCI state list according to an indication of DCI.

36. A network device, comprising: A sending module, configured to send DCI to a terminal; An indicating module, configured to indicate a first TCI state mode to the terminal; or configured to indicate to the terminal to select a first TCI state list or a second TCI state list.

37. An electronic device, comprising: At least one processor; A memory for storing executable instructions of the at least one processor; Wherein, the at least one processor is configured to execute the instructions to implement the method according to any one of claims 1 to 34.

38. A computer-readable storage medium, when instructions in the computer-readable storage medium are executed by a processor of an electronic device, enabling the electronic device to execute the method according to any one of claims 1 to 34.

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