TCI indication configuration method and device, and storage medium

Abstract

The invention relates to a TCI indication configuration method and device and a storage medium in the technical field of communication. The method applied to the terminal equipment comprises the following steps: receiving DCI sent by network equipment; according to the indication of the DCI, indicating a first TCI state mode; or selecting the first TCI state list or the second TCI state list according to the indication of the DCI. According to the invention, the indication of the back-off TCI state can be carried out under the condition that the potential performance deterioration of the AI wave beam occurs, and the stable data transmission under the fluctuation of the AI model performance is ensured by efficiently and quickly indicating the appropriate and reliable wave beam information to the terminal.

Description

Technical Field

[0001] 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

[0002] Currently, under the existing design framework of the 5th Generation Mobile Communication Technology (5G), Artificial Intelligence (AI) can already obtain corresponding gains in multiple fields such as Channel State Information (CSI) feedback, beam management, and positioning, showing considerable application prospects.

[0003] A typical use case of 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 the terminal beam measurement overhead and improve the beamforming gain. However, in the scenario of inference on the terminal side, even though the model of the User Equipment (UE) has a certain generalization ability, the inference performance of the UE's AI model is excellent only in specific beams or specific channel environments. The AI model may change due to the configured parameters or the scenario it is in, resulting in the prediction performance of the AI model no longer being excellent.

[0004] In the current technology, when the network discovers that the currently deployed AI model may have potential performance degradation, it can monitor the performance of the AI model through a dedicated mechanism to help the network manage the life cycle of the model, including activation / deactivation, switching, fallback to non-AI mode, etc. However, these processes usually require a certain amount of processing time. Between the base station suspecting performance degradation of the AI model and the completion of the above processes, the base station needs to indicate appropriate beam information to the terminal to ensure stable data transmission. Summary of the Invention

[0005] To solve the above technical problems, 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 under fluctuations in the performance of the AI model.

[0006] In a first aspect of the embodiments of the present disclosure, a TCI indication configuration method is provided, which is applied to a terminal device. The method includes:

[0007] Receiving DCI sent by a network device;

[0008] According to the indication of the DCI, indicating the first TCI state mode; or

[0009] Select the first TCI state list or the second TCI state list according to the indication of the DCI.

[0010] In a second aspect of the embodiments of the present disclosure, a method for configuring TCI indication is provided, which is applied to a network device. The method includes:

[0011] Send DCI to the terminal;

[0012] Indicate the first TCI state mode of the terminal; or

[0013] Indicate the terminal to select the first TCI state list or the second TCI state list.

[0014] In a third aspect of the embodiments of the present disclosure, a terminal device is provided, including:

[0015] A receiving module, configured to receive DCI sent by a network device;

[0016] A fallback module, configured to indicate the first TCI state mode according to the indication of the DCI; or configured to select the first TCI state list or the second TCI state list according to the indication of the DCI.

[0017] In a fourth aspect of the embodiments of the present disclosure, a network device is provided, including:

[0018] A sending module, configured to send DCI to the terminal;

[0019] An indicating module, configured to indicate the first TCI state mode of the terminal; or configured to indicate the terminal to select the first TCI state list or the second TCI state list.

[0020] In a fifth aspect of the embodiments of the present disclosure, an electronic device is provided, including:

[0021] At least one processor;

[0022] A memory for storing executable instructions of the at least one processor;

[0023] Wherein, the at least one processor is used to execute the instructions to implement the above method.

[0024] In a sixth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided. When the instructions in the computer-readable storage medium are executed by a processor of an electronic device, the electronic device can execute the above method.

[0025] The above at least one technical solution adopted in the embodiments of the present disclosure can achieve the following beneficial effects: by receiving DCI sent by a network device; according to the indication of the DCI, indicating the first TCI state mode; or according to the indication of the DCI, selecting the first TCI state list or the second TCI state list. This solution can indicate the fallback of the TCI state in the case of potential performance deterioration of the AI beam, and ensure stable data transmission under the fluctuation of the AI model performance by efficiently and quickly indicating appropriate and reliable beam information to the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 A schematic diagram of a system architecture provided by an embodiment of the present disclosure;

[0029] Figure 2 A schematic flowchart of a TCI indication configuration method applied to a terminal device provided by an embodiment of the present disclosure;

[0030] Figure 3 A block diagram of a terminal device provided by an embodiment of the present disclosure;

[0031] Figure 4 A block diagram of a network device provided by an embodiment of the present disclosure;

[0032] Figure 5 A schematic diagram of the structure of an electronic device provided by an embodiment of the present disclosure;

[0033] Figure 6 A schematic diagram of the structure of an exemplary computer system provided by an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] In order to better understand the above objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0035] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. However, the present disclosure may be practiced in other ways different from those described herein. Obviously, the embodiments in the specification are only a part of the embodiments of the present disclosure, rather than all of the embodiments.

[0036] It should be understood that the various steps recited in the method embodiments of the present disclosure may be executed in a different order 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 regard.

[0037] It should be noted that the concepts such as "first", "second", etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependent relationship of the functions performed by these devices, modules or units.

[0038] It should be noted that the modifiers "a", "multiple" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that, unless clearly specified otherwise in the context, it should be understood as "one or more".

[0039] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only for illustrative purposes, and are not used to limit the scope of these messages or information.

[0040] First, the system architecture related to the present disclosure is described.

[0041] The present disclosure can be applied to a fifth-generation (5G) system, which can also be referred to as a new radio (NR) system; or it can be applied to a sixth-generation (6G) system, or a seventh-generation (7G) system, or other future communication systems; or it can also be used in a device-to-device (D2D) system, a machine-to-machine (M2M) system, a vehicle-to-everything (V2X), etc.

[0042] Figure 1 A schematic diagram of a system architecture provided for an embodiment of the present disclosure. The present disclosure can be applied to Figure 1 the system architecture shown. Figure 1 The system architecture shown may include, but is not limited to: a network device 120 and a terminal device 110. Figure 1 The number and form of the devices in are for illustration and do not constitute a limitation on the embodiments of the present disclosure. For example, in actual applications, there may be multiple network devices and multiple terminal devices.

[0043] A terminal device, also known as a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., is a device that provides voice and / or data connectivity to users. For example, a handheld device with a wireless connection function, a vehicle-mounted device, etc. Currently, some examples of terminal devices are: mobile phone, tablet computer, laptop computer, palmtop computer, 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.

[0044] A network device, which can also be referred to as an access network device, refers to a radio access network (RAN) node (or device) that connects a terminal device to a wireless network, and can also be called a base station. Currently, some examples of RAN nodes are: gNode B (gNB), Transmission and 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 Node B, or home Node B, HNB), Base Band Unit (BBU), or Wireless Fidelity (Wifi) Access Point (AP), etc. Additionally, in a network architecture, a network device can include a Centralized Unit (CU) node, or a Distributed Unit (DU) node, or a RAN device that includes a CU node and a DU node. It should be noted that the centralized unit node and the distributed unit node may also have other names, which are not limited in this disclosure.

[0045] For ease of understanding, the technical terms involved in the embodiments of this disclosure will be introduced first below.

[0046] 1. Beam

[0047] A beam is a communication resource, which refers to a special directional transmission or reception effect formed by the transmitter or receiver of a network device or a terminal device through an antenna array, similar to the beam of light converged in one direction by a flashlight. By sending and receiving signals in the form of beams, the transmission distance of the signals can be effectively increased.

[0048] 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 specifically be digital beamforming technology, analog beamforming technology, or hybrid digital / analog beamforming technology, etc.

[0049] Among them, the transmission beam: The transmitting device sends a signal with a certain beamforming weight value, so that the transmitted signal forms a spatially directional beam. Among them, in the uplink direction, the transmitting device can be a terminal device; in the downlink direction, the transmitting device can be a network device.

[0050] The receiving beam: The receiving device receives a signal with a certain beamforming weight value, so that the received signal forms a spatially directional beam. Among them, in the uplink direction, the receiving device can be a network device; in the downlink direction, the receiving device can be a terminal device.

[0051] Transmission beamforming: When a transmitting device with an antenna array sends a signal, a specific amplitude and phase are set on each antenna element of the antenna array, so that the transmitted signal has a certain spatial directivity, that is, the signal power is high in some directions and low in some directions. The direction with the highest signal power is the direction of the transmission beam. The antenna array includes multiple antenna elements, and the attached specific amplitude and phase are the beamforming weight values.

[0052] Receiving beamforming: When a receiving device with an antenna array receives a signal, a specific amplitude and phase are set on each antenna element of the antenna array, so that the power gain of the received signal is directional, that is, the power gain is high when receiving signals in some directions and low when receiving signals in some directions. The direction with the highest power gain when receiving the signal is the direction of the receiving beam. The antenna array includes multiple antenna elements, and the attached specific amplitude and phase are the beamforming weight values.

[0053] Sending a signal using a certain transmission beam: Sending a signal using a certain beamforming weight value. Receiving a signal using a receiving beam: Receiving a signal using a certain beamforming weight value.

[0054] The beam can be a wide beam, or a narrow beam, or other types of beams.

[0055] A beam generally corresponds to a resource. 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). The terminal device determines the beam corresponding to the reference resource according to the reference resource included in the TCI - state. Different beams can be regarded as different resources, and the same information or different information can be sent using (or through) different beams.

[0056] A beam pair is based on the concept of a beam. A beam pair generally includes a transmit beam of the transmitting device and a receive beam of the receiving device. It should be noted that if not 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.

[0057] 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, beam alignment needs to be performed between network devices and terminal devices. In communication protocols, beams can be specifically characterized as digital beams, analog beams, spatial domain filters, spatial filters, spatial parameters, TCI, TCI states, etc. The beam used for transmitting signals can be called a transmission beam (Tx beam), spatial domain transmission filter, spatial transmission filter, spatial domain transmission parameter, spatial transmission parameter, etc. The beam used for receiving signals can be called a reception beam (Rx beam), spatial domain reception filter, spatial reception filter, spatial domain reception parameter, spatial reception parameter, etc. It can be understood that the embodiments of the present disclosure uniformly use beams for expression, but beams can be alternatively understood as other equivalent concepts and are not limited to the concepts mentioned above.

[0058] 2. Resources:

[0059] In communication protocols, reference signals are configured in the form of resources. The network device will configure each reference signal to the terminal device in the form of resources. One resource is a configuration information unit, which usually includes parameters related to a reference signal, such as the time-frequency resource location of the reference signal, the number of ports, the time domain type (periodic / semi-static / aperiodic), etc.

[0060] The resource can be an uplink signal resource or a downlink signal resource. The uplink signals include, but are not limited to, sounding reference signal (SRS) and demodulation reference signal (DMRS). The downlink signals include, but are not limited to, channel state information reference signal (CSI-RS), cell specific reference signal (CS-RS), user equipment specific reference signal (US-RS), demodulation reference signal (DMRS), and synchronization signal / physical broadcast channel block (SS / PBCH block). Among them, SS / PBCH block can be abbreviated as synchronization signal block (SSB).

[0061] The resource can be configured through radio resource control (RRC) messages. In terms of the configuration structure, a resource is a data structure that includes relevant parameters of its corresponding uplink / downlink signals. For example, the type of uplink / downlink signals, the resource granule carrying the uplink / downlink signals, the transmission time and period of the uplink / downlink signals, the number of ports used to transmit the uplink / downlink signals, etc. Each uplink / downlink signal resource has a unique identifier to identify the downlink signal resource. It can be understood 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.

[0062] 3. Beam management:

[0063] 5G can adopt high-frequency communication, that is, use a higher frequency band such as 28 gigahertz (GHz) signal to transmit data. A major problem with high-frequency communication is that the signal energy decreases rapidly with the transmission distance, resulting in a short signal transmission distance. To overcome this problem, high-frequency communication adopts analog beamforming technology. By performing weighted processing on the antenna array, the signal energy is concentrated within a small angular range, forming a signal similar to a light beam (referred to as an analog beam, abbreviated as beam), thereby increasing the transmission distance.

[0064] Both network devices and terminal devices need to use beams for transmission. In downlink transmission, the beam used by the network device is called the downlink transmission beam, and the beam used by the terminal device is called the downlink reception beam. In uplink transmission, the beam used by the terminal device is called the uplink transmission beam, and the beam used by the network device is called the uplink reception beam. In downlink and uplink transmissions, which beams are specifically used by the network device and the terminal device can be determined through the beam management process.

[0065] Beam management refers to the process by which network devices and terminal devices acquire and maintain a set of beams for transmission and reception, and is a reference workflow for beamforming in a multiple input multiple output (MIMO) system. For example, if the network device has M beams and the terminal device has N beams, the downlink beam management process is as follows:

[0066] 1) Beam sweeping: The process by which a network device or a terminal device sequentially selects beams for transmission or reception in a specified scanning manner within a time period to cover a spatial area.

[0067] Specifically, if 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 including M measurement resources, measurement period, etc. The measurement resource can be a reference signal (RS) 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 transmit the corresponding measurement resource, and the terminal device can determine the quality of the beam corresponding to the measurement resource by measuring the measurement resource. It can be understood that the beams of the network device are invisible to the terminal device. The terminal device can determine the quality of each measurement resource, but it does not perceive which beam the measurement resource corresponds to.

[0068] 2) Beam measurement: The process by which a network device or a terminal device measures the received beamformed signal.

[0069] 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 for transmission and which beam the terminal device uses for reception is optimal. Specifically, in each measurement period, the network device sequentially transmits the corresponding measurement resources using the above-mentioned M beams, and the terminal device receives and measures using one of the N beams 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 received power. In each measurement period, the terminal device sequentially uses different beams for reception and measurement. Through N measurement periods, the channel quality between the N beams of the terminal device and the M beams of the network device can be determined.

[0070] 3) Beam reporting: The process by which the terminal device reports the beam measurement results to the network device.

[0071] Specifically, through the above-mentioned beam measurement, the terminal device can determine the optimal beam of the terminal device corresponding to each measurement resource according to the channel quality, or rather, the optimal receiving beam or the best receiving beam of the terminal device. The terminal device can report the information of the measurement resources corresponding to the optimal 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 is optimal. 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 optimal beam for reception. Among them, the information of the measurement resources reported by the terminal device may include the identifiers and RSRP of the measurement resources corresponding to at most 4 optimal 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 according to the correspondence between the M beams and the M measurement resources. For example, through beam measurement, the terminal device can determine that the 4 measurement resources with the best quality are RS#1, RS#2, RS#3, and RS#4, and the optimal beams of the terminal device corresponding to the 4 measurement resources are beam B3, beam B2, beam B2, and beam B1 respectively. That is, among the 4 measurement resources received by the terminal device using beam B1, the quality of RS#4 is the best. Among the 4 measurement resources received by the terminal device using beam B2, the quality of RS#2 and RS#3 is the best. Among the 4 measurement resources received by the terminal device using beam B3, the quality of RS#1 is the best. The terminal device can report RS#1, the reference signal received power (RSRP) 1 corresponding to RS#1, RS#2, the RSRP2 corresponding to RS#2, RS#3, the RSRP3 corresponding to RS#3, RS#4, and the RSRP4 corresponding to RS#4 to the network device.

[0072] 4) Beam determination: The process by which a network device or a terminal device selects its transmission or reception beam.

[0073] The following is combined with Figures 1-6 to describe the TCI indication configuration method, device, and storage medium provided by the embodiments of the present disclosure.

[0074] In the case of potential performance degradation of the beam based on AI, the embodiments of the present disclosure provide a TCI indication configuration method, which can efficiently and quickly indicate appropriate and reliable beam information to the terminal, ensuring stable data transmission under fluctuations in the performance of the AI model.

[0075] Figure 2 The following is a schematic flowchart of a TCI indication configuration method applied to a terminal device provided by the embodiments of the present disclosure. As Figure 2 shown, the TCI indication configuration method applied to a terminal device includes:

[0076] S211. Receive DCI sent by a network device.

[0077] When there is potential performance degradation in the beam of the AI, for example, when some KPIs, such as the overall system throughput, the prediction accuracy of the AI model, the BLER, etc., are abnormal or decline, the terminal device receives the DCI sent by the network device, where the DCI includes indication information for instructing the terminal device to perform mode switching.

[0078] S212. According to the indication of the DCI, indicate the first TCI state mode; or according to the indication of the DCI, select the first TCI state list or the second TCI state list.

[0079] Exemplarily, the terminal device reverts to the default TCI state mode according to the indication 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 indication of the DCI sent by the network device. Among them, the first TCI state list and the second TCI state list can be either the AI-based TCI state mode or the non-AI-based TCI state mode, which is not limited herein.

[0080] It should be noted that the method for a network device to implement AI-based TCI state indication: through AI models deployed on the network device side and the terminal device side, the AI model takes the measured reference signal quality as input, and obtains the globally optimal reference signal index and reference signal quality as output. The base station uses the optimal reference signal (beam) predicted by AI obtained for subsequent TCI state indication of the uplink and downlink channels and reference signals, where the source RS of the TCI state can be the above-mentioned optimal reference signal.

[0081] In an embodiment of the present disclosure, when there is a potential performance deterioration in the beam of AI, the terminal device receives DCI sent by the network device; the terminal device indicates the first TCI state mode according to the indication of the DCI; or the terminal device selects the first TCI state list or the second TCI state list according to the indication of the DCI. This solution can perform fallback TCI state indication in the case of potential performance deterioration of the AI beam, and ensures stable data transmission under fluctuations in the performance of the AI model by efficiently and quickly indicating appropriate and reliable beam information to the terminal.

[0082] Taking the network device as the base station and the terminal device as the UE as an example, the solution of the present disclosure is exemplarily described below. When the base station discovers some potential performance anomalies in the AI-based model, the base station can send DCI to instruct the terminal to switch back to the default TCI state mode.

[0083] First, the configuration of the default TCI state must be performed first. The base station determines one or a group of default TCI states for the UE to be used for PDSCH, PDCCH, CSI-RS, and PUSCH, PUCCH, SRS through preset rules or RRC / MAC CE configuration (different channels may use different default TCI states). The following several methods can be specifically adopted:

[0084] 1. Based on the Unified TCI state method:

[0085] 1. Set a default DL Unified TCI state for PDSCH, PDCCH, CSI-RS, and / or set a default UL Unified TCI state for PUSCH, PUCCH, SRS;

[0086] 2. Set a default Joint Unified TCI state for PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, SRS;

[0087] 3. Default DL / UL Unified TCI state or Joint Unified TCI state definition based on preset rules:

[0088] 3.1 DL / Joint TCI state:

[0089] The UE has a quasi-co-located (QCL) relationship between the SSB identified in the initial access procedure and the DM-RS of PDSCH, the DM-RS of PDCCH, and CSI-RS;

[0090] In the random access procedure triggered by the resynchronization reconfiguration procedure, the UE identifies that the SSB or CSI-RS resource has a QCL relationship with the DM-RS of PDSCH, the DM-RS of PDCCH, and CSI-RS;

[0091] 3.2 UL / Joint TCI state:

[0092] The UE assumes that the PUSCH scheduled by the RAR UL grant in the initial access procedure has the same uplink transmission spatial filter as the DM-RS of DG / CG PUSCH, the DM-RS of PUCCH, and SRS;

[0093] The UE assumes that the PUSCH scheduled by the RAR UL grant in the random access procedure triggered by the resynchronization reconfiguration procedure has the same uplink transmission spatial filter as the DM-RS of DG / CG PUSCH, the DM-RS of PUCCH, and SRS.

[0094] II. Method based on R15 / R16 TCI state:

[0095] 1. The default TCI state of PDCCH, PUCCH, CSI-RS, and SRS is determined according to the RRC configuration.

[0096] For each control resource set (CORESET), PUCCH resource or resource set, CSI-RS, and SRS, it can be determined whether to follow the default TCI state through separate high-layer parameter configurations.

[0097] 2. PDSCH: When the transmission interval between the transmission time of PDSCH and the PDCCH scheduling PDSCH is less than the threshold timeDurationForQCL (waiting time threshold).

[0098] When a CORESET is configured for the CC (control channel) where the PDSCH is located, the DMRS of the PDSCH and the RS regarding the QCL parameter of the CORESET with the smallest CORESET ID at the nearest moment before the PDSCH transmission moment have a QCL relationship; when no CORESET is configured, the PDSCH follows the TCI state corresponding to the smallest TCI state ID configured by RRC.

[0099] 3. PDSCH: When the transmission interval between the transmission moment of the PDSCH and the PDCCH scheduling the PDSCH is greater than or equal to the threshold timeDurationForQCL.

[0100] Follow the TCI state corresponding to the CORESET corresponding to the PDCCH scheduling the PDSCH.

[0101] 4. The TCI state of the PUSCH is determined according to the TCI state of the SRS associated with it.

[0102] 5. When the default TCI state corresponding to PDCCH, PDSCH, PUCCH, PUSCH, CSI-RS, SRS becomes effective, then the corresponding channel or RS uses the corresponding default TCI state as the DL QCL and / or uplink transmission spatial filtering assumption.

[0103] The base station sends a DCI to instruct the terminal to switch back to the default TCI state mode, which can be achieved in the following ways:

[0104] I. Indicate through a newly added 1-bit field in the DCI

[0105] Indicate through a newly added 1-bit field in the DCI, and the UE reverts to the default TCI state mode.

[0106] When the codepoint = 1, it indicates that the corresponding channel / RS of the UE uses the TCI state indicated by the TCI field as the DLQCL and / or uplink transmission spatial filtering assumption;

[0107] When the codepoint = 0, it indicates that the corresponding channel / RS of the UE uses the set default TCI state as the DLQCL and / or uplink transmission spatial filtering assumption, that is, switches back to the default TCI state mode;

[0108] If the DCI carries DL-SCH, the PDSCH scheduled by it will switch back to the default TCI state mode;

[0109] If the DCI carries UL-SCH, the PUSCH scheduled by it will switch back to the default TCI state mode.

[0110] In an optional example, the TCI field in the DCI may indicate at least one reliable beam determined in a non-AI manner, such as a wide beam, etc.

[0111] Specifically, taking a certain moment at or after the DCI transmission moment as the time demarcation point, then for PDSCH, PDCCH, and CSI-RS between the DCI reception moment and this time demarcation point, the default DL Unified TCI state or the default Joint Unified TCI state is used as the DL QCL assumption, and for PUSCH, PUCCH, and SRS between them, the default UL Unified TCI state or the default Joint Unified TCI state is used as the uplink transmission spatial filtering assumption; for PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS after this time demarcation point, the TCI state indicated by the TCI field is used as the DL QCL and / or uplink transmission spatial filtering assumption.

[0112] Among them, the above time demarcation point may be the DCI transmission moment; or N1 slots after the DCI transmission moment; or the CSI reporting moment corresponding to the BM-CSI report triggered by the DCI for AI model performance monitoring (or N2 slots after the CSI reporting moment); or N3 symbols / slots after the positive HARQ-ACK corresponding to the DCI.

[0113] 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.

[0114] When this DCI does not include DL-SCH, the UE will send the positive HARQ-ACK corresponding to this DCI on the PUCCH or PUSCH;

[0115] When this DCI includes DL-SCH, the UE will send the positive HARQ-ACK corresponding to the PDSCH scheduled by this DCI on the PUCCH or PUSCH.

[0116] II. Indication via special codepoint in TCI field in DCI

[0117] The base station can indicate via the special codepoint in the TCI field in DCI to instruct the UE to fallback to the default TCI state mode.

[0118] When the terminal is configured as the first mode through higher layer parameters, when the codepoint = a certain special value, such as 0, it indicates that the corresponding channel / RS of the UE uses the set default TCI state as the DL QCL and / or the uplink transmission spatial filtering assumption.

[0119] 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.

[0120] When the base station discovers some potential performance anomalies in the AI-based model, the base station can send DCI to instruct the terminal to switch between the non-AI-based TCI state mode and the AI-based TCI state mode.

[0121] First, the TCI state pool needs to be configured as follows:

[0122] The 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;

[0123] a) Among them, both the first type and the second type can be based on the Unified TCI state framework;

[0124] b) Or, both the first type and the second type are based on the R15 / R16 TCI state framework;

[0125] c) Or, the first type is based on the Unified TCI state framework, and the second type is based on the R15 / R16 TCI state framework;

[0126] d) Or, the first type is based on the R15 / R16 TCI state framework, and the second type is based on the Unified TCI state framework.

[0127] The base station sends DCI to instruct the terminal to switch between the non-AI-based TCI state mode and the AI-based TCI state mode, which can be specifically implemented in the following ways:

[0128] 1. One MAC CE activates N or N groups of TCI states from the above-mentioned first type of TCI state pool.

[0129] a) Among them, for the case of "N groups of TCI states", at least 1 TCI state in each group is used for the downlink channel / signal, and the remaining at least 1 TCI state is used for the uplink channel / signal.

[0130] b) Optionally, another type of MAC CE can activate N or N groups of TCI states from the above-mentioned second type of TCI state pool, with a similar meaning.

[0131] 2. The DCI contains 2 TCI fields, corresponding to the above-mentioned 2 types of TCI state pools respectively.

[0132] a) At the same time, the DCI also has a field for indicating which one of the above 2 TCI fields is effective, and the UE will ignore the remaining ineffective TCI field.

[0133] The DCI contains two TCI fields, corresponding to the first type of TCI state pool and the second type of TCI state pool respectively; according to the field in the DCI for indicating the effectiveness of the TCI field, one TCI field becomes effective, and the other remaining ineffective TCI field is ignored.

[0134] 3. The DCI has a field occupying 1 bit, which is used to indicate which one of the above two types of TCI state pools the TCI field in the DCI corresponds to.

[0135] According to the field in the DCI for indicating whether the TCI field in the DCI corresponds to the first type of TCI state pool or the second type of TCI state pool, the TCI field becomes effective.

[0136] a) When the codepoint = 0, the TCI field corresponds to the first type of TCI state pool.

[0137] b) When the codepoint = 1, the TCI field corresponds to the second type of TCI state pool.

[0138] In an alternative embodiment of the present disclosure, the DCI sent by the terminal device may also be used to trigger an aperiodic CSI report for beam measurement, and the CSI report may be used to monitor the performance of the AI model. The reported quantity of the CSI report includes at least one of 'cri-RSRP','ssb-Index-RSRP', 'cri-RSRP-Index','ssb-Index-RSRP-Index'.

[0139] Figure 3 The block diagram of a terminal device provided by an embodiment of the present disclosure is as Figure 3 shown. The terminal device 300 includes:

[0140] A receiving module 301, configured to receive DCI sent by a network device;

[0141] A fallback module 302, configured to indicate a first TCI state mode according to the indication of the DCI; or configured to select a first TCI state list or a second TCI state list according to the indication of the DCI.

[0142] In some embodiments, the terminal device 300 further includes:

[0143] A configuration module 303, configured to determine one or a set of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS according to a preset rule or a base station configuration.

[0144] In some embodiments, the configuration module 303 is further configured that: the base station configures one or a set of DL Unified TCI states for at least one of PDSCH, PDCCH, and CSI-RS, and / or the base station configures one or a set of UL Unified TCI states for at least one of PUSCH, PUCCH, and SRS.

[0145] In some embodiments, the configuration module 303 is further configured to:

[0146] The base station configures one or a set of Joint Unified TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS.

[0147] In some embodiments, the configuration module 303 is further configured to at least one of the following:

[0148] In the initial access process, the SSB identified has a QCL relationship with at least one of the DM-RS of PDSCH, the DM-RS of PDCCH, and CSI-RS;

[0149] 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.

[0150] It is assumed 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 the DG / CG PUSCH, the DM-RS of the PUCCH, and the SRS.

[0151] It is assumed that the uplink transmission spatial filter of the PUSCH scheduled by the RAR UL grant in the random access procedure triggered by the synchronous reconfiguration procedure is the same as at least one of the DM-RS of the DG / CG PUSCH, the DM-RS of the PUCCH, and the SRS.

[0152] In some embodiments, the configuration module 303 is further configured to perform at least one of the following: determine the default TCI state of at least one of the PDCCH, PUCCH, CSI-RS, and SRS according to the RRC configuration; when the transmission interval between the transmission time of the PDSCH and the PDCCH scheduling the PDSCH is less than the threshold timeDurationForQCL, and when the CC where the PDSCH is located is configured with a CORESET, the DMRS of the PDSCH and the RS regarding the QCL parameter of the CORESET with the smallest CORESET ID at the nearest moment configured with a CORESET before the transmission time of the PDSCH have a QCL relationship; when the CC where the PDSCH is located is not configured with a CORESET, the PDSCH determines the TCI state according to the TCI state corresponding to the smallest TCI state ID configured by the RRC; when the transmission interval between the transmission time of the PDSCH and the PDCCH scheduling the 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 the PDSCH; the TCI state of the PUSCH is determined according to the TCI state of the SRS associated with the PUSCH; when the TCI state corresponding to at least one of the PDCCH, PDSCH, PUCCH, PUSCH, CSI-RS, and SRS becomes effective, the corresponding channel or RS uses the corresponding default TCI state as the DL QCL and / or uplink transmission spatial filtering assumption.

[0153] In some embodiments, the fallback module 302 includes:

[0154] The first fallback module is configured to be indicated by a 1-bit field in DCI, indicating whether to apply the first TCI state mode; or is configured to be indicated by a preset codepoint in the TCI field in DCI, indicating to apply the first TCI state mode.

[0155] In some embodiments, the indication by a 1-bit field in DCI indicating to apply the first TCI state mode includes:

[0156] When the codepoint = 1, the corresponding channel / RS uses the TCI state indicated by the TCI field as the DL QCL and / or the uplink transmission spatial filtering assumption;

[0157] When the codepoint = 0, the corresponding channel / RS uses the TCI state determined according to a preset rule or the base station configuration as the DL QCL and / or the uplink transmission spatial filtering assumption;

[0158] The TCI field in DCI indicates at least one TCI state.

[0159] In some embodiments, when the codepoint = 0, the corresponding channel / RS uses the TCI state determined according to a preset rule or the base station configuration as the DL QCL and / or the uplink transmission spatial filtering assumption, including at least one of the following:

[0160] If the DCI carries DL-SCH, the scheduled PDSCH uses the TCI state determined according to a preset rule or the base station configuration as the DL QCL assumption;

[0161] If the DCI carries UL-SCH, the scheduled PUSCH uses the TCI state determined according to a preset rule or the base station configuration as the uplink transmission spatial filtering assumption.

[0162] In some embodiments, the TCI field in DCI indicates at least one TCI state, including at least one of the following:

[0163] Taking a certain moment after the DCI transmission moment as a time demarcation point, at least one of PDSCH, PDCCH, and CSI-RS between the DCI reception moment and the time demarcation point is used as a DL QCL assumption according to DL Unified TCI state or Joint Unified TCI state, and at least one of PUSCH, PUCCH, and SRS between them is used as an uplink transmission spatial filtering assumption according to UL Unified TCI state or Joint Unified TCI state;

[0164] For at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS after the time demarcation point, the TCI state indicated by the TCI field is used as a DL QCL and / or uplink transmission spatial filtering assumption.

[0165] In some embodiments, 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 triggered by the DCI for performance monitoring; or, the time demarcation point is N2 slots after the CSI reporting moment corresponding to the CSI reporting triggered by the DCI for performance monitoring; or, the time demarcation point is N3 symbols / slots after the positive HARQ-ACK corresponding to the DCI.

[0166] 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,

[0167] When the DCI does not include DL-SCH, the positive HARQ-ACK corresponding to the DCI is sent on the PUCCH or PUSCH;

[0168] 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.

[0169] 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.

[0170] In some embodiments, one MAC CE activates N or N groups of TCI states from the first TCI state list.

[0171] In some embodiments, the fallback module 302 further includes:

[0172] A second fallback module, configured such that there are two TCI fields in the DCI, corresponding to a first TCI state list and a second TCI state list respectively; according to an indication field in the DCI for indicating the effectiveness of the TCI field, one TCI field becomes effective and the other remaining ineffective TCI field is ignored; or

[0173] According to an indication field in the DCI for indicating whether the TCI field corresponds to the first TCI state list or the second TCI state list, determine the association between the TCI field in the DCI and the corresponding TCI state list.

[0174] In some embodiments, the terminal device 300 further includes:

[0175] A reporting module, configured to trigger an aperiodic CSI report according to the indication of the DCI.

[0176] In some embodiments, the reporting quantity of the CSI report includes at least one of 'cri-RSRP','ssb-Index-RSRP', 'cri-RSRP-Index','ssb-Index-RSRP-Index'.

[0177] Figure 4 The block diagram of a network device provided by an embodiment of the present disclosure is as Figure 4 shown. The network device 400 includes:

[0178] A sending module 401, configured to send DCI to the terminal;

[0179] An indication module 402, configured to indicate the first TCI state mode to the terminal; or configured to indicate that the terminal selects the first TCI state list or the second TCI state list.

[0180] In some embodiments, the network device 400 further includes:

[0181] A configuration module 403, configured to determine, through a preset rule, RRC or MAC CE configuration, one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, SRS of the terminal.

[0182] In some embodiments, the configuration module 403 is further configured to:

[0183] Configure one or a group of DL Unified TCI states for at least one of PDSCH, PDCCH, and CSI-RS, and / or configure one or a group of UL Unified TCI states for at least one of PUSCH, PUCCH, and SRS.

[0184] 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.

[0185] In some embodiments, the configuration module 403 is further configured to:

[0186] 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 those of 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 those of at least one of the DM-RS of DG / CG PUSCH, the DM-RS of PUCCH, and SRS.

[0187] In some embodiments, the configuration module 403 is further configured to: determine a 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 scheduling PDSCH is less than the threshold timeDurationForQCL, and when the 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 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 RS uses the corresponding default TCI state as the DL QCL and / or uplink transmission spatial filtering assumption.

[0188] In some embodiments, the indication module 402 includes:

[0189] A first indication module, configured to indicate whether the terminal applies the first TCI state mode by indicating a 1-bit field in DCI; or configured to indicate that the terminal applies the first TCI state mode by a preset codepoint in the TCI field in DCI.

[0190] In some embodiments, the indication of whether the terminal applies the first TCI state mode by indicating a 1-bit field in DCI includes:

[0191] When the codepoint = 1, it indicates 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;

[0192] When the codepoint = 0, it indicates that the corresponding channel / RS of the terminal uses the TCI state determined according to the preset rules or the base station configuration as the DL QCL and / or the uplink transmission spatial filtering assumption;

[0193] The TCI field in the DCI indicates at least one TCI state.

[0194] In some embodiments, when the codepoint = 0, the corresponding channel / RS uses the TCI state determined according to the preset rules or the base station configuration as the DL QCL and / or the uplink transmission spatial filtering assumption, including at least one of the following:

[0195] If the DCI carries DL-SCH, the scheduled PDSCH uses the TCI state determined according to the preset rules or the base station configuration as the DL QCL assumption;

[0196] If the DCI carries UL-SCH, the scheduled PUSCH uses the TCI state determined according to the preset rules or the base station configuration as the uplink transmission spatial filtering assumption.

[0197] In some embodiments, the TCI field in the DCI indicates at least one TCI state, including at least one of the following:

[0198] Taking a certain moment 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 the 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 the Joint Unified TCI state as the uplink transmission spatial filtering assumption;

[0199] 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 the uplink transmission spatial filtering assumption.

[0200] In some embodiments, 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 report for performance monitoring triggered by the DCI; or, the time demarcation point is N2 slots after the CSI reporting time corresponding to the CSI report 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.

[0201] 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.

[0202] When the DCI does not include the DL-SCH, the positive HARQ-ACK corresponding to the DCI is sent on the PUCCH or PUSCH.

[0203] 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.

[0204] 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.

[0205] In some embodiments, one MAC CE activates N or N groups of TCI states from the first TCI state list.

[0206] In some embodiments, the indication module 402 further includes:

[0207] A second indication module, configured to: there are two TCI fields in the DCI, corresponding to the first TCI state list and the second TCI state list respectively; indicate to the terminal that according to the indication field used to indicate the activation of the TCI field in the DCI, one TCI field is activated and the other remaining non-activated TCI field is ignored; 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, indicate to the terminal to determine the association between the TCI field in the DCI and the corresponding TCI state.

[0208] In some embodiments, the network device 400 further includes:

[0209] A monitoring module, configured to instruct a terminal to trigger an aperiodic CSI report through DCI.

[0210] In some embodiments, the reporting amount of the CSI report includes at least one of 'cri-RSRP','ssb-Index-RSRP', 'cri-RSRP-Index','ssb-Index-RSRP-Index'.

[0211] For the implementation processes of the functions and roles of each module in the above device, refer to the implementation processes of the corresponding steps in the above method for details, which will not be elaborated here.

[0212] An embodiment of the present disclosure further provides an electronic device, including: at least one processor; a memory for storing instructions executable by at least one processor; wherein, the at least one processor is configured to execute the instructions to implement the steps of the above method applied in the embodiment of the present disclosure.

[0213] Figure 5 It is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure. As Figure 5 shown, 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 method applied in the embodiment of the present disclosure.

[0214] The above processor 501 can also be referred to as a Central Processing Unit (CPU). It can be an integrated circuit chip with signal processing capabilities. Each step in the above method applied in the embodiment of the present disclosure can be completed by the integrated logic circuit in the hardware of the processor 501 or by instructions in software form. The above 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 devices, discrete gate or transistor logic devices, discrete hardware components. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method applied in combination with the embodiment of the present disclosure can be directly embodied as being executed and completed by the hardware decoding processor, or by a combination of the 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, and other mature storage media in the art. The processor 501 reads the information in the memory 502 and combines its hardware to complete the steps of the above method.

[0215] In addition, when various operations / processes according to the present disclosure are implemented by software and / or firmware, a program constituting the software can be installed from a storage medium or a network into a computer system having a dedicated hardware structure, for example, Figure 6 into the computer system 600 shown. When various programs are installed in the computer system, it can execute various functions, including the functions described above and so on. Figure 6 FIG. 4 is a schematic structural diagram of an exemplary computer system provided for an embodiment of the present disclosure.

[0216] The computer system 600 is intended to represent various forms of digital electronic computer devices, such as, laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic devices can also represent various forms of mobile devices, such as, personal digital processors, 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.

[0217] As Figure 6 shown, the computer system 600 includes a computing unit 601, which can execute 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. In the RAM 603, various programs and data required for the operation of the computer system 600 can also be stored. The computing unit 601, the ROM 602, and the RAM 603 are connected to each other through a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0218] Multiple components in the computer system 600 are connected to the I / O interface 605, including: an input unit 606, an output unit 607, a storage unit 608, and a communication unit 609. The input unit 606 can be any type of device capable of inputting information into the computer system 600. The input unit 606 can receive input digital or character information and generate key signal inputs related to user settings and / or function controls of the electronic device. The output unit 607 can be any type of device capable of presenting information and can include, but is not limited to, a display, a speaker, a video / audio output terminal, a vibrator, and / or a printer. The storage unit 608 can include, but is not limited to, magnetic disks and optical discs. The communication unit 609 allows the computer system 600 to exchange information / data with other devices via a network such as the Internet and can include, but is not limited to, a modem, a network card, an infrared communication device, a wireless communication transceiver, and / or a chipset, for example, a Bluetooth™ device, a WiFi device, a WiMax device, a cellular communication device, and the like.

[0219] The computing unit 601 can be various general-purpose and / or special-purpose 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 running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The computing unit 601 executes the various methods and processes described above. For example, in some embodiments, the above methods of the application of the embodiments of the present disclosure can be implemented as a computer software program tangibly contained in a machine-readable medium, such as the storage unit 608. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device via the ROM 602 and / or the communication unit 609. In some embodiments, the computing unit 601 can be configured to execute the above methods of the embodiments of the present disclosure in any other suitable manner (for example, by means of firmware).

[0220] Embodiments of the present disclosure provide a computer-readable storage medium storing one or more programs that can be executed by one or more processors to implement the above TCI indication configuration method.

[0221] A 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 it may also be a respective 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.

[0222] It should be noted that the computer-readable storage medium in the present disclosure may be a computer-readable signal medium, 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, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having 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 a 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, the computer-readable storage medium may be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, apparatus, or device. And in the present disclosure, the computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, in which the computer-readable program code is carried. Such a propagated data signal may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium may also be any computer-readable medium other than the computer-readable storage medium, and this computer-readable signal medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted by any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0223] 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 combinations thereof. The foregoing programming languages include, but are not limited to, object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on a computer, partially on a computer, executed as a stand-alone software package, partially on a computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the computer through 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., by connecting through the Internet using an Internet service provider).

[0224] The modules, components, or units described in embodiments of the present disclosure may be implemented in software or in hardware. Wherein, the names of the modules, components, or units do not, in some cases, constitute a limitation on the modules, components, or units themselves.

[0225] The functions described above herein may be performed, at least in part, by one or more hardware logic components. For example, by way of non-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), systems on a chip (SOCs), complex programmable logic devices (CPLDs), and the like

[0226] It should be noted that in this document, terms such as "including", "comprising", or any other variation thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device that includes a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or device. Without further limitation, an element defined by the statement "including a..." does not exclude the presence of additional identical elements in the process, method, article, or device that includes the element.

[0227] The foregoing are only specific embodiments of the present disclosure, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be 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 will not be limited to the embodiments described herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A TCI indication configuration method, applied to a terminal device, characterized in that, The method includes: 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, wherein The method further includes: determining, according to a preset rule or base station configuration, one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS.

3. The method according to claim 2, wherein The determining, according to a preset rule or base station configuration, one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS 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, according to a preset rule or base station configuration, one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS 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, according to a preset rule or base station configuration, one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS 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 synchronous 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 PUSCH scheduled by the RAR UL grant in the initial access procedure has the same uplink transmission spatial filter as at least one of the DM-RS of DG / CG PUSCH, the DM-RS of PUCCH, and SRS; Assume that the PUSCH scheduled by the RAR UL grant in the random access procedure triggered by the synchronous reconfiguration procedure has the same uplink transmission spatial filter 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, according to a preset rule or base station configuration, one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS 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, and when the 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 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 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 to 6, characterized in that The indication of the first TCI state mode according to the indication of DCI includes: Indicated by a 1-bit field in DCI, indicating whether to apply the first TCI state mode; or Indicated by a preset codepoint in the TCI field in DCI, indicating to apply the first TCI state mode.

8. The method according to claim 7, wherein The indication by 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 situation that 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 DCI carries DL-SCH, then the PDSCH it schedules 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 the UL-SCH, the PUSCH scheduled by it uses the TCI state determined according to a preset rule or configured by the base station 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 therebetween 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 triggered by the DCI for performance monitoring; or, the time demarcation point is N2 slots after the CSI reporting moment corresponding to the CSI reporting triggered by the DCI for performance monitoring; 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, characterized in that, 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 claim 1, wherein The method further includes: 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, characterized in that, The selecting the first TCI state list or the second TCI state list according to the indication of the DCI includes: The DCI contains two TCI fields, 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 activation of the TCI field, one TCI field is activated and the other remaining non-activated TCI field is ignored; 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, it is determined that the TCI field in the DCI is associated with the corresponding TCI state list.

16. The method according to claim 1, wherein The method further includes: Triggering an aperiodic CSI report according to the indication of the DCI.

17. The method according to claim 16, wherein The reported 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, is characterized in that The method includes: Sending DCI to the terminal; Indicating the first TCI state mode to the terminal; or Indicating to the terminal to select the first TCI state list or the second TCI state list.

19. The method according to claim 18, wherein The method further includes: determining, by means of a preset rule, RRC or MAC CE configuration, one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, SRS of the terminal.

20. The method according to claim 19, wherein The determining, by means of a preset rule, RRC or MAC CE configuration, one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, SRS of the terminal 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 The determining, by means of a preset rule, RRC or MAC CE configuration, one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, SRS of the terminal 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 The determining, by means of a preset rule, RRC or MAC CE configuration, one or a group of TCI states for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, SRS of the terminal 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 PUSCH scheduled by the RAR UL grant in the initial access procedure has the same uplink transmission spatial filter as at least one of the DM-RS of DG / CG PUSCH, the DM-RS of PUCCH, and SRS; The terminal assumes that the PUSCH scheduled by the RAR UL grant in the random access procedure triggered by the synchronous reconfiguration procedure has the same uplink transmission spatial filter 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 Determining, by preset rules, RRC, or MAC CE configuration, one or a set of TCI states used by the terminal for at least one of PDSCH, PDCCH, CSI-RS, PUSCH, PUCCH, and SRS includes at least one of the following: Determining 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 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 moment closest to the transmission time of PDSCH 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 the TCI state corresponding to at least one of 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, characterized in that, The indication of the terminal's first TCI state mode includes: It is indicated by a 1-bit field in the DCI, indicating whether the terminal applies the first TCI state mode; or It is indicated by a preset codepoint in the TCI field in the DCI, indicating that the terminal applies the first TCI state mode.

25. The method according to claim 24, wherein The indication by a 1-bit field in the DCI, indicating whether the terminal applies the first TCI state mode, includes: When the codepoint = 1, it indicates 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, it indicates 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 the 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 the 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 the DCI transmission time or a certain time after that as the time demarcation point, at least one of the PDSCH, PDCCH, and CSI-RS between the DCI reception time 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 the 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 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.

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 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.

30. The method according to claim 18, wherein The method further includes: Sending an RRC configuration to the terminal, where the RRC configuration includes 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, characterized in that, 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, wherein The method further includes: 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, characterized in that, Includes: A receiving module, configured to receive the DCI sent by the network device; A fallback module, configured to indicate the first TCI state mode according to the indication of the DCI; or configured to select the first TCI state list or the second TCI state list according to the indication of the DCI.

36. A network device, characterized in that, Includes: A sending module, configured to send the DCI to the terminal. An indication module, configured to indicate a first TCI state mode of a terminal; or configured to indicate that the terminal selects a first TCI state list or a second TCI state list.

37. An electronic device, characterized in that, 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, characterized in that, When the instructions in the computer-readable storage medium are executed by a processor of an electronic device, the electronic device is enabled to execute the method according to any one of claims 1 to 34.

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