Communication method, apparatus, and device, and storage medium

Abstract

A communication method, apparatus, and device, and a storage medium, relating to the technical field of mobile communications. The method is executed by a terminal device, and comprises: receiving activation signaling (410), the activation signaling being used for instructing to add a plurality of TCI states to one or more TCI state lists; and after a first duration starting from a time point at which the activation signaling was received, using a first TCI state to receive a PDSCH (420), the first TCI state being a TCI state indicated by a network device from the TCI state list updated on the basis of an activation instruction, the first duration being determined on the basis of an adjustment duration of each of the plurality of TCI states, and the adjustment duration being a duration required to complete time-frequency adjustment of a reference signal corresponding to the TCI state.

Description

Communication Method, Apparatus, Device and Storage Medium Technical Field This application relates to the field of mobile communication technologies, and particularly to a communication method, apparatus, device and storage medium. Background Art A Demodulation Reference Signal (DMRS) is a reference signal used for uplink and downlink demodulation. In related technologies, for a control channel, the DMRS therein is carried at a resource position pre-configured in the resources of the control channel. Summary of the Invention Embodiments of this application provide a communication method, apparatus, device and storage medium. The technical solution is as follows: On the one hand, embodiments of this application provide a communication method, which is executed by a terminal device, and the method includes: Receiving an activation signaling, where the activation signaling is used to indicate adding multiple Transmission Configuration Indicator (TCI) states to one or more TCI state lists; After a first duration starting from the time point when the activation signaling is received, receiving a Physical Downlink Shared Channel (PDSCH) using a first TCI state; the first TCI state is a TCI state indicated by a network device from the TCI state list updated according to the activation instruction; the first duration is determined by respective adjustment durations of the multiple TCI states; the adjustment duration is a duration for completing time-frequency adjustment of a reference signal corresponding to the TCI state. On the other hand, embodiments of this application provide a communication method, which is executed by a network device, and the method includes: Sending an activation signaling to a terminal device, where the activation signaling is used to indicate adding multiple TCI states to one or more TCI state lists; the activation signaling is used for the terminal device to receive a PDSCH using a first TCI state after a first duration starting from the time point when the activation signaling is received; the first TCI state is a TCI state indicated by a network device from the TCI state list updated according to the activation instruction; the first duration is determined by respective adjustment durations of the multiple TCI states; the adjustment duration is a duration for completing time-frequency adjustment of a reference signal corresponding to the TCI state. On the other hand, embodiments of this application provide a communication apparatus, and the apparatus includes: A receiving module, configured to receive an activation signaling, where the activation signaling is used to indicate adding multiple TCI states to one or more TCI state lists; The receiving module is further configured to receive a PDSCH using a first TCI state after a first duration starting from the time point when the activation signaling is received; the first TCI state is a TCI state indicated by the network device from the TCI state list updated according to the activation instruction; the first duration is determined by the respective adjustment durations of the plurality of TCI states; the adjustment duration is the duration for completing the time-frequency adjustment of the reference signal corresponding to the TCI state. On the other hand, an embodiment of the present application provides a communication device, which includes: A sending module, configured to send activation signaling to a terminal device, where the activation signaling is used to indicate adding a plurality of TCI states to one or more TCI state lists; the activation signaling is used for the terminal device to receive a PDSCH using a first TCI state after a first duration starting from the time point when the activation signaling is received; the first TCI state is a TCI state indicated by the network device from the TCI state list updated according to the activation instruction; the first duration is determined by the respective adjustment durations of the plurality of TCI states; the adjustment duration is the duration for completing the time-frequency adjustment of the reference signal corresponding to the TCI state. On the other hand, an embodiment of the present application provides a communication device, which includes a processor, a memory, and a transceiver; A computer program is stored in the memory, and the processor executes the computer program to enable the communication device to implement the above communication method. In yet another aspect, an embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored, and the computer program is loaded and executed by a processor to implement the above communication method. In yet another aspect, the present application further provides a chip, which includes an integrated circuit and firmware provided in the integrated circuit, and the chip is used to run in a communication device to enable the communication device to execute the above communication method. In yet another aspect, the present application provides a computer program product, which includes computer instructions stored in a computer-readable storage medium. A processor of a communication device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to enable the communication device to execute the above communication method. In yet another aspect, the present application provides a computer program, which is executed by a processor of a communication device to implement the above communication method. With the solution provided by the embodiments of the present application, when the terminal device receives an activation instruction indicating to add multiple TCI states to one or more TCI state lists, it needs to start waiting for a first duration at the time point when the activation signaling is received, and then start receiving the PDSCH using the first TCI state indicated from the updated TCI state list by the network device. The above first duration is determined by the adjustment durations respectively corresponding to the multiple TCI states. That is to say, with the above solution, in the scenario where the terminal device is instructed to add multiple TCI states by an activation instruction, the terminal device can combine the adjustment durations of the multiple TCI states to be added to determine the waiting duration before starting to receive the PDSCH using the TCI state in the updated TCI state list, so as to ensure the accuracy of receiving the PDSCH through the TCI state in the scenario where adding multiple TCI states is indicated by the activation signaling. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application; FIG. 2 is a schematic diagram of the TCI state configuration of the PDSCH involved in the present application; FIG. 3 is a schematic diagram of the PDSCH scheduling involved in the present application; FIG. 4 is a flowchart of a communication method provided by an embodiment of the present application; FIG. 5 is a flowchart of a communication method provided by an embodiment of the present application; FIG. 6 is a flowchart of a communication method provided by an embodiment of the present application; FIG. 7 is a block diagram of a communication device provided by an embodiment of the present application; FIG. 8 is a block diagram of a communication device provided by an embodiment of the present application; FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application. DETAILED DESCRIPTION FIG. 1 shows a schematic diagram of a communication system related to an exemplary embodiment of the present application. The communication system includes a network device 110 and a terminal device 120, and / or a terminal device 120 and a terminal device 130. The present application does not limit this. The network device 110 in this application provides wireless communication functions. The network device 110 includes, but is not limited to: 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), Baseband Unit (BBU), Access Point (AP) in a Wireless Fidelity (Wi-Fi) system, wireless relay node, wireless backhaul node, Transmission Point (TP), or Transmission and Reception Point (TRP), etc. It can also be a Next Generation Node B (gNB) or Transmission Point (TRP or TP) in a 5th Generation (5G) mobile communication system, or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node constituting a gNB or Transmission Point, such as a Baseband Unit (BBU) or Distributed Unit (DU), etc., or a base station in a Beyond Fifth Generation (B5G) or 6th Generation (6G) mobile communication system, or a Core Network (CN), Fronthaul, Backhaul, Radio Access Network (RAN), network slice, etc., or a serving cell, Primary Cell (PCell), Primary Secondary Cell (PSCell), Special Cell, SpCell), Secondary Cell (SCell), neighboring cell, etc. The terminal device 120 and / or the terminal device 130 in this application, also known as User Equipment (UE), access terminal, user unit, user station, mobile station, mobile platform, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, user device. The terminal includes but is not limited to: handheld devices, wearable devices, in-vehicle devices, and Internet of Things devices, etc. For example: mobile phones, tablet computers, e-book readers, laptop computers, desktop computers, televisions, game consoles, Mobile Internet Devices (MIDs), Augmented Reality (AR) terminals, Virtual Reality (VR) terminals, and Mixed Reality (MR) terminals, wearable devices, gamepads, electronic tags, controllers, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, wireless terminals in remote medical surgery, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), set-top boxes (STBs), customer premise equipment (CPE), etc. The network device 110 and the terminal device 120 communicate with each other through a certain radio interface technology, such as the Uu interface. Exemplarily, there are two communication scenarios between the network device 110 and the terminal device 120: the uplink communication scenario and the downlink communication scenario. Among them, uplink communication means sending signals to the network device 110; downlink communication means sending signals to the terminal device 120. The terminal device 120 and the terminal device 130 communicate with each other through a certain radio interface technology, such as the PC5 interface. In some embodiments, there are two communication scenarios between the terminal device 120 and the terminal device 130: the first sidelink communication scenario and the second sidelink communication scenario. The first sidelink communication is to send a signal to the terminal device 130; the second sidelink communication is to send a signal to the terminal device 120. Both the terminal device 120 and the terminal device 130 are within the network coverage and in the same cell, or both the terminal device 120 and the terminal device 130 are within the network coverage but in different cells, or the terminal device 120 is within the network coverage while the terminal device 130 is outside the network coverage. The technical solutions provided by the embodiments in this application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Advanced Long Term Evolution (LTE-A) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, 5G mobile communication system, New Radio (NR) system, the evolved system of the NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Terrestrial Networks (TN) system, Non-Terrestrial Networks (NTN) system, Wireless Local Area Networks (WLAN), Wireless Fidelity (Wi-Fi), cellular Internet of Things system, cellular passive Internet of Things system, and can also be applicable to the evolved system subsequent to the 5G NR system, and can also be applicable to B5G, 6G and subsequent evolved systems. In some embodiments of this application, "NR" can also be referred to as the 5G NR system or the 5G system. Among them, the 5G mobile communication system can include Non-Standalone (NSA) and / or Standalone (SA). The technical solutions provided in the embodiments of this application can also be applied to Machine Type Communication (MTC), Long Term Evolution-Machine (LTE-M), Device to Device (D2D) networks, Machine to Machine (M2M) networks, Internet of Things (IoT) networks, or other networks. Among them, the IoT network can include, for example, the vehicle-to-everything (V2X) network. Among them, the communication methods in the V2X network system are collectively referred to as Vehicle to X (V2X, where X can represent anything). For example, the V2X can include: Vehicle to Vehicle (V2V) communication, Vehicle to Infrastructure (V2I) communication, communication between a vehicle and a pedestrian (V2P), or Vehicle to Network (V2N) communication, etc. (1) Transmission Configuration Indication (TCI) state TCI-state: Quasi-Colocation (QCL) indication for downlink transmission When a terminal performs signal reception, to improve the reception performance, it can utilize the characteristics of the transmission environment corresponding to data transmission to improve the reception algorithm. For example, the statistical characteristics of the channel can be used to optimize the design and parameters of the channel estimator. In the NR system, these characteristics corresponding to data transmission are represented by the QCL-Info (Quasi-Colocation Information). If the downlink transmission comes from different TRPs / panels / beams, the characteristics of the transmission environment corresponding to the data transmission may also change. Therefore, in the NR system, when the network side transmits the downlink control channel or data channel, it will indicate the corresponding QCL state information to the terminal through the TCI state. A TCI state can include the following configurations: TCI state ID, used to identify a TCI state; QCL information 1; QCL information 2 (optional). Among them, a QCL information includes the following information: The QCL type configuration can be one of QCL type A, QCL type B, QCL type C, or QCL type D; The QCL reference signal configuration includes the cell ID where the reference signal is located, the BWP ID, and the identifier of the reference signal (which can be the CSI-RS resource ID or the SSB index); Among them, if both QCL information 1 and QCL information 2 are configured, the QCL type of at least one QCL information must be one of type A, type B, or type C, and the QCL type of the other QCL information (if configured) must be QCL type D. Among them, the definitions of different QCL type configurations are as follows: 'QCL-TypeA': {Doppler shift, Doppler spread, average delay, delay spread (Doppler frequency shift, Doppler spread, average delay, delay spread)}; 'QCL-TypeB': {Doppler shift, Doppler spread (Doppler frequency shift, Doppler spread)}; 'QCL-TypeC': {Doppler shift, average delay (Doppler frequency shift, average delay)}; 'QCL-TypeD': {Spatial Rx parameter (Spatial Rx parameter)}. In 38.331, the relevant configurations of the TCI state are as follows: In the NR system, the network side can indicate the corresponding TCI state for the downlink signal or downlink channel. If the network side configures the QCL reference signal of the target downlink channel or target downlink signal as the reference synchronization signal and the Physical Broadcast Channel (PBCH) block (Synchronization Signal and PBCH Block, SSB) or the Channel State Information-Reference Signal (CSI-RS) resource through the TCI state, and the QCL type configuration is type A, type B, or type C, then the terminal can assume that the large-scale parameters of the target downlink signal and the reference SSB or reference CSI-RS resource are the same, and the large-scale parameters are determined by the QCL type configuration. Similarly, if the network side configures the QCL reference signal of the target downlink channel or downlink signal through the TCI state to be the reference SSB or reference CSI-RS resource, and the QCL type is configured as typeD, the terminal can use the same receiving beam (i.e., Spatial Rx parameter) as that for receiving the reference SSB or reference CSI-RS resource to receive the target downlink signal. Generally, the target downlink channel (or downlink signal) and its reference SSB or reference CSI-RS resource are transmitted by the same TRP or the same panel or the same beam on the network side. If the transmission TRP or transmission panel or transmission beam of two downlink signals or downlink channels is different, different TCI states are usually configured. For the Physical Downlink Control Channel (PDCCH), the TCI state of the corresponding Control-Resource Set (CORESET) can be indicated by Radio Resource Control (RRC) signaling or in the way of RRC signaling + Media Access Control (MAC) signaling. For the downlink data channel (such as the Physical Downlink Shared Channel (PDSCH)), the set of available TCI states is indicated by RRC signaling, and some of the TCI states are activated by MAC layer signaling. Finally, one or two TCI states are indicated from the activated TCI states through the TCI state indication field in the Downlink Control Information (DCI) for the PDSCH scheduled by the DCI. The case of two TCI states is mainly for scenarios similar to multiple TRPs discussed later. Please refer to Figure 2, which shows the schematic diagram of the TCI state configuration of the PDSCH involved in this application. (2) Support TCI-state switching with three activation configuration methods to correspond to different latency requirements Among them, the different latency requirements are as follows: TCI state switching delay based on MAC-Control Element (CE); TCI state switching delay based on RRC; DCI based TCI state switch delay Taking the activation of the TCI state of the UE-specific PDCCH by MAC-CE as an example, the process by which the network indicates the TCI state for PDCCH reception is as follows: Indication of TCI state for UE-specific PDCCH The network may indicate a TCI state for PDCCH reception for a CORESET of a Serving Cell by sending the TCI State Indication for UE-specific PDCCH MAC CE described in clause 6.1.3.15 The MAC entity shall if the MAC entity receives a TCI State Indication for UE-specific PDCCH MAC CE on a Serving Cell, indicate to lower layers the information regarding the TCI State Indication for UE-specific PDCCH MAC CE If the target TCI state is known, until the PDSCH carrying the MAC-CE activation command is received in slot n, the UE shall be able to use the target TCI state (target TCI state) of the serving cell where the current TCI state switch occurs, in The first slot after receives the PDCCH. At and before, the UE should be able to receive the PDCCH with the old TCI state. Between the old TCI state and the new TCI state, there is a gap time, i.e., TO k *(T first-SSB +T SSB- proc ) / NR slot length, at this time the new TCI state is not in effect, and the UE and the network do not expect PDCCH scheduling here. The reason for this gap time is mainly because it is necessary to receive reference signals such as SSB to adjust the corresponding new beam, which may be radio frequency and baseband adjustments, including power / direction / timing, etc. The protocol does not have clear requirements, but leaves room for UE implementation. The length of this gap time depends on the period and processing time of reference signals such as SSB. Among them: - T HARQ is the timing between DL data transmission and acknowledgement as specified in TS 38.213 (T HARQ is the timing between DL data transmission and acknowledgement as specified in TS 38.213); - T first-SSB is the time to the first SSB transmission after the UE decodes the MAC CE command; The SSB shall be the QCL-TypeA or QCL-TypeC to the target TCI state (T first-SSB is time to first SSB transmission after MAC CE command is decoded by the UE; The SSB shall be the QCL-TypeA or QCL-TypeC to target TCI state); - T SSB-proc = 2ms; - TO k = 1 if the target TCI state is not in the active TCI state list for PDSCH, 0 otherwise. If the target TCI state is unknown until the PDSCH carrying the MAC-CE activation command is received in slot n, the UE shall be able to use the target TCI state (target TCI state) of the serving cell where the current TCI state switch occurs, and receive the PDCCH in the first slot after . Before and before, the UE should be able to receive the PDCCH with the old TCI state (the old TCI state). Where: - In FR1, or in FR2 where the TCI state switch does not involve QCL TypeD, T L1-RSRP = 0 (T L1- RSRP = 0 in FR1 or when the TCI state switching not involving QCL-TypeD in FR2). Otherwise, - T L1-RSRP is the time for Rx beam refinement in FR2 (T L1-RSRP is the time for Rx beam refinement in FR2), defined as follows: - T L1-RSPR_Measurement_Period_SSB is used for the SSB specified in Article 9.5.4.1 (T L1-RSPR_Measurement_Period_SSB for SSB as specified in clause 9.5.4.1); - Assume M = 1 (with the assumption of M = 1); - T Report = 0; - T L1-RSRP_Measurement_Period_CSI-RS is used for the CSI-RS specified in Article 9.5.4.2 (T L1- RSRP_Measurement_Period_CSI-RS for CSI-RS as specified in clause 9.5.4.2); - Configured with higher layer parameter repetition set to ON; - Assume M = 1 for periodic CSI-RS; - For aperiodic CSI-RS, if the number of resources in the resource set is at least equal to MaxNumberRxBeam; - T Report = 0; - When TCI state switching involves QCL TypeD, TO for CSI-RS based L1-RSRP measurement uk = 1, and TO for SSB based L1-RSR measurement uk = 0 (TO uk = 1 for CSI-RS based L1-RSRP measurement, and 0 for SSB based L1-RSRP measurement when TCI state switching involves QCL-TypeD); - When TCI state switching involves only other QCL types, TO uk = 1 (TO uk = 1 when TCI state switching involves other QCL types only); - T first SSB is the time to the first SSB transmission after L1-RSRP measurement when TCI state switching involves QCL-TypeD (T first-SSB is time to first SSB transmission after L1-RSRP measurement when TCI state switching involves QCL-TypeD); - T first SSB is the time to the first SSB transmission after the UE decodes the MAC CE command for other QCL types (T first-SSB is time to first SSB transmission after MAC CE command is decoded by the UE for other QCL types); - The SSB shall be the QCL-TypeA or QCL-TypeC to target TCI state. (3) Active TCI state list update The update of the active TCI state list means that the network activates or deactivates the TCI states for receiving PDSCH through the UE specific PDSCH MAC-CE. The TCI state of the initially configured PDSCH is inactive. Activation / Deactivation of UE-specific PDSCH TCI state: The network may activate and deactivate the configured TCI states for PDSCH of a Serving Cell or a set of Serving Cells configured in simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2 by sending the TCI States Activation / Deactivation for UE-specific PDSCH MAC CE described in clause 6.1.3.14. The network may activate and deactivate the configured TCI states for a codepoint of the DCI Transmission configuration indication field as specified in TS 38.212 for PDSCH of a Serving Cell by sending the Enhanced TCI States Activation / Deactivation for UE-specific PDSCH MAC CE described in clause 6.1.3.24. The configured TCI states for PDSCH are initially deactivated upon configuration and after a handover. The MAC entity shall perform the following operations: If the MAC entity receives a TCI States Activation / Deactivation for UE-specific PDSCH MAC CE on a Serving Cell: indicate to lower layers the information regarding the TCI States Activation / Deactivation for UE-specific PDSCH MAC CE; If the MAC entity receives an Enhanced TCI States Activation / Deactivation for UE-specific PDSCH MAC CE on a Serving Cell: indicate to lower layers the information regarding the Enhanced TCI States Activation / Deactivation for UE-specific PDSCH MAC CE. The corresponding latency requirements are as follows: Active TCI state list update delay: If the target TCI state is known, when the UE receives a PDSCH carrying a MAC-CE active TCI state list update in slot n, the UE will be able to receive the PDCCH in the first slot after the slot length to schedule the PDSCH with the new target TCI situation; where T HARQ 、T first SSB 、T SSB proc and TOk Defined in Clause 8.10.3 (If the target TCI state is known, upon receiving PDSCH carrying MAC-CE active TCI state list update at slot n, UE shall be able to receive PDCCH to schedule PDSCH with the new target TCI state at the first slot that is after Where T HARQ , T first-SSB , T SSB-proc and TO k are defined in Clause 8.10.3). After satisfying the above longest delay, the new TCI state can be invoked from the TCI state list through the PDCCH / DCI received by the UE. Similarly, before the new TCI state takes effect, there is a gap time, i.e., TO k *(T first-SSB +T SSB-proc ) / NR slot length. At this time, the new TCI state is not updated and effective in the list, and the TCI state in the old TCI state list cannot be considered usable either. The UE and the network do not expect PDCCH to schedule PDSCH reception on the new TCI here. Currently, for the update of the MAC CE active TCI state list of the UE-specific PDSCH TCI state, the UE uses the old TCI state to receive PDCCH until After the UE receives and processes the activation signaling, it still needs to wait for a period of time (gap1), i.e.: The first slot after the slot length is allowed to schedule and receive PDSCH with the new TCI state from the new list. However, for the UE's ability to support Multi-Rx reception, when multi-Rx reception is activated and groupBasedBeamReporting-r17 is configured, the time definition for the update of the TCI state list is different for the scenarios of s-DCI and m-DCI. Active DL TCI state list update delay: For a single downlink control information (sDCI), if the dual target TCI states are known, upon receiving a PDSCH carrying a MAC-CE active TCI state list update from a TRP at slot n, the UE shall be able to receive a PDCCH to schedule PDSCHs with new target TCIs from two TRPs at the first slot that is after the slot length. Where T HARQ ,T first-SSB1 ,T first-SSB2 ,T SSB-proc and TO k are defined in clause 8.10D.3 (For sDCI, if the dual target TCI states are known, upon receiving PDSCH carrying MAC-CE active TCI state list update from a TRP at slot n, UE shall be able to receive PDCCH to schedule PDSCHs from both TRPs with the new target TCI states at the first slot that is after slot length. Where T HARQ ,T first-SSB1 ,T first-SSB2 ,T SSB-proc and TO k are defined in clause 8.10D.3). For the case of multiple downlink control information (mDCI), if the target TCI state is known, upon receiving PDSCH carrying MAC-CE active TCI state list update from a TRP at slot n, UE shall be able to receive PDCCH to schedule PDSCH from the TRP with the new target TCI state at the first slot that is after slot length. Where T HARQ ,T first-SSB ,T SSB-proc and TO k are defined in clause 8.10.3. Dual target TCI states can be used in the same slot for PDCCH or PDSCH only after both TCI states on TCI state list(s) are activated)。 slot length. Where T HARQ ,T first-SSB ,T SSB-proc and TO k are defined in clause 8.10.3. Dual target TCI states can be used in the same slot for PDCCH or PDSCH only after both TCI states on TCI state list(s) are activated)。 The requirements in this clause apply for a UE configured with groupBasedBeamReporting-r17 and dual TCI state configurations on PCell in standalone NR, assuming dual target TCI states are known and the UE can receive the dual target TCI states simultaneously, where the known conditions are defined in 8.10D.2. UE shall complete the switch of active TCI state within the delay defined in this clause. The known conditions for TCI state are as follows: The dual TCI state are known if the following conditions are met: - Dual TCI states are QCL-ed with typeD to the latest reported beam pair (i.e., RS resources pair) within one group; - During the TCI state switching period, the dual TCI states and all the RSs in the two QCL chains remain detectable; - The SNR of the TCI state ≥ -3dB; - The RS resource pair configured for dual TCI states is reported in the last

[1280]

[1280] ms. Please refer to FIG. 3, which shows a schematic diagram of PDSCH scheduling involved in the present application. As shown in FIG. 3, for the case of mDCI, if at time A, DCI0 has started to call the new TCI state0 in the updated active TCI state list 0 to prepare for receiving PDSCH0, and DCI1 is in the gap between the old TCI and the new TCI because the TCI state 1 associated with PDSCH1 has not completed the update of the TCI state list 1, at this time, it is necessary to consider the processing ability of the UE, whether it supports the use of the TCI state0 corresponding to DCI0 first, and whether it affects the delayed reception of PDSCH0. The subsequent solutions involved in the present application can give the possibilities and latency requirements for TCI state activation and PDSCH reception under different mDCI arrival scenarios and different UE capability assumptions. Please refer to FIG. 4, which shows a flowchart of a communication method provided by an embodiment of the present application. This method can be executed by a terminal device. Among them, the above terminal device can be the terminal device 120 or the terminal device 130 in the network architecture shown in FIG. 1. This method can include the following steps: Step 410: Receive an activation signaling, where the activation signaling is used to indicate adding multiple TCI states to one or more TCI state lists. In some embodiments, the network device can send an activation signaling to the terminal device to indicate that the terminal device adds TCI states to one or more TCI state lists in the terminal device. For example, the above activation signaling can indicate that the terminal device adds one or more new TCI states to each of one or more TCI state lists. Optionally, the above activation signaling may further instruct the terminal device to remove an old TCI state from one or more TCI state lists. Step 420: After a first duration starting from the time point when the activation signaling is received, receive a physical downlink shared channel PDSCH using a first TCI state; the first TCI state is a TCI state indicated by the network device from the updated TCI state list according to the activation instruction; the first duration is determined by the adjustment durations of the respective TCI states; the adjustment duration is the duration for completing the time-frequency adjustment of the reference signal corresponding to the TCI state. Among them, after the first duration starting from the time point when the activation signaling is received, receiving the PDSCH using the first TCI state may mean that after the terminal device waits for the first duration starting from the time point when the activation signaling is received, it can receive the PDSCH using the TCI state newly indicated by the network device through DCI in the updated TCI state list. In some embodiments, after the first duration starting from the time point when the activation signaling is received, receiving the physical downlink shared channel PDSCH using the first TCI state includes: After the time point when the activation signaling is received, receive downlink control information DCI sent by the network device, where the DCI is used to instruct the terminal device to receive the PDSCH through the first TCI state; After the first duration starting from the time point when the activation signaling is received, start receiving the PDSCH using the first TCI state. That is to say, after sending the above activation signaling, the network device can schedule the terminal device to receive the PDSCH using the first TCI state in the updated TCI state list, but this scheduling takes effect after the first duration starting from the time point when the terminal device receives the activation signaling. In some embodiments, the above first duration includes: A second duration allowing the PDSCH to be received using a second TCI state, and an interval duration during which no PDSCH scheduled by the PDCCH is expected; Among them, the second TCI state is a TCI state indicated by the network device from the TCI state list before being updated according to the activation instruction; the interval duration is determined by the adjustment durations of the respective TCI states. Among them, the above first TCI state may be referred to as a new TCI state, and the above second TCI state may be referred to as an old TCI state. In the embodiments of the present application, after receiving the activation signaling, the terminal device first needs to process the activation signaling. In this process, the terminal device can receive the PDSCH through the original / old TCI state (i.e., the second TCI state mentioned above). The duration left for the terminal device to process the activation signaling and at the same time allow the use of the original / old TCI state to receive the PDSCH is the second duration. After completing the processing of the activation signaling, the terminal device also needs to adjust the time-frequency of the reference signal corresponding to the TCI state to be newly added to the TCI state list. The duration left for the terminal device to adjust the time-frequency of the reference signal corresponding to the TCI state to be newly added to the TCI state list is the above-mentioned interval duration. The terminal device and the network device do not expect the PDSCH scheduled by the PDCCH during this period (i.e., the time period corresponding to the above-mentioned interval duration). For example, during the period when the terminal device adjusts the time-frequency of the reference signal corresponding to the TCI state to be newly added to the TCI state list, the network device may not send the PDSCH to the terminal device. Correspondingly, the terminal device may also not receive the PDSCH. In some embodiments, the duration left for the terminal device to process the activation signaling (i.e., the second duration) can be In the embodiments of the present application, since there are multiple TCI states added to one or more TCI state lists as indicated by the activation signaling, for these newly added different TCI states, the duration for the terminal device to adjust the time-frequency of the reference signals corresponding to different TCI states may also be different. Therefore, in the embodiments of the present application, the duration (i.e., the above-mentioned interval duration) that the terminal device waits after completing the processing of the activation signaling and before starting to receive the PDSCH using the new TCI state can be determined by the adjustment durations respectively corresponding to multiple TCI states. In summary, in the solution shown in the embodiments of the present application, when the terminal device receives an activation instruction indicating to add multiple TCI states to one or more TCI state lists, it needs to start waiting for a first duration at the time point when the activation signaling is received, and then start receiving the PDSCH using the first TCI state indicated by the network device from the updated TCI state list, where the above-mentioned first duration is determined by the adjustment durations respectively corresponding to the multiple TCI states; that is to say, through the above solution, in the scenario where the terminal device is instructed to add multiple TCI states by an activation instruction, the terminal device can combine the adjustment durations of the multiple TCI states to be added to determine the waiting duration before starting to receive the PDSCH using the TCI state in the updated TCI state list, so as to ensure the accuracy of receiving the PDSCH through the TCI state in the scenario where multiple TCI states are indicated to be added by the activation signaling. Please refer to FIG. 5, which shows a flowchart of a communication method provided by an embodiment of the present application. This method can be executed by a network device. The network device can be the network device 110 in the network architecture shown in FIG. 1. This method can include the following steps: Step 510: Send an activation signaling to the terminal device. The activation signaling is used to indicate adding multiple TCI states to one or more TCI state lists; the activation signaling is used for the terminal device to start receiving the PDSCH using the first TCI state after a first duration starting from the time point when the activation signaling is received; the first TCI state is the TCI state indicated by the network device from the TCI state list updated according to the activation instruction; the first duration is determined by the adjustment durations of the multiple TCI states respectively; the adjustment duration is the duration for completing the time-frequency adjustment of the reference signal corresponding to the TCI state. In a possible implementation manner, after sending the activation signaling, send DCI to the terminal device. The DCI is used to instruct the terminal device to receive the PDSCH through the first TCI state. In summary, in the solution shown in the embodiments of the present application, when the terminal device receives an activation instruction indicating to add multiple TCI states to one or more TCI state lists, it needs to start waiting for a first duration at the time point when the activation signaling is received, and then start receiving the PDSCH using the first TCI state indicated by the network device from the updated TCI state list. Among them, the above first duration is determined by the adjustment durations corresponding to multiple TCI states respectively; that is to say, through the above solution, in the scenario where the terminal device is instructed to add multiple TCI states by an activation instruction, the terminal device can combine the adjustment durations of the multiple TCI states to be added to determine the waiting duration before starting to receive PDSCH using the TCI states in the updated TCI state list, so as to ensure the accuracy of PDSCH reception through TCI states in the scenario where multiple TCI states are instructed to be added by an activation signaling. Please refer to FIG. 6, which shows a flowchart of a communication method provided by an embodiment of the present application. This method can be executed interactively by a terminal device and a network device; among them, the above terminal device can be the terminal device 120 or the terminal device 130 in the network architecture shown in FIG. 1, and the above network device can be the network device 110 in the network architecture shown in FIG. 1; this method can include the following steps: Step 610: The network device sends an activation signaling to the terminal device, and the terminal device receives the activation signaling; the activation signaling is used to instruct to add multiple TCI states to one or more TCI state lists. Among them, the above activation signaling can be a UE specific PDSCH MAC CE (UE specific PDSCH MAC-CE). The network device uses the UE specific PDSCH MAC-CE to instruct the terminal device to add multiple TCI states to one or more TCI state lists at one time. For example, the above activation signaling can instruct the terminal device to add multiple TCI states to the same TCI state list; or, the above activation signaling can instruct the terminal device to add some of the above multiple TCI states to multiple TCI state lists respectively. Optionally, the above activation signaling can also instruct to delete one or more TCI states from the above one or more TCI state lists. Step 620: The terminal device processes the activation signaling and adjusts the time-frequency of the reference signal corresponding to the TCI state. Among them, the process of the terminal device processing the activation signaling can include the process of adding multiple TCI states to one or more TCI state lists. The above adjustment of the time-frequency of the reference signal corresponding to the TCI state can include receiving a reference signal (such as an SSB) to adjust the new beam corresponding to the TCI state. For example, adjusting the radio frequency and baseband, including adjusting parameters such as power / direction / timing, etc. Among them, the time length left for the terminal device to process the activation signaling is the second time length, and the time length left for the terminal device to adjust the time-frequency of the reference signal corresponding to the TCI state is the interval time length. Step 630: After the first time length starting from the time point when the terminal device receives the activation signaling, the terminal device receives the PDSCH using the first TCI state; the first TCI state is the TCI state indicated by the network device from the TCI state list updated according to the activation instruction; the first time length is determined by the adjustment time lengths of the respective TCI states; the adjustment time length is the time length for completing the time-frequency adjustment of the reference signal corresponding to the TCI state. In some embodiments, after the first time length starting from the time point when the activation signaling is received, receiving the physical downlink shared channel PDSCH using the first TCI state includes: After the time point when the activation signaling is received, receiving the downlink control information DCI sent by the network device, where the DCI is used to instruct the terminal device to receive the PDSCH through the first TCI state; After the first time length starting from the time point when the activation signaling is received, start receiving the PDSCH using the first TCI state. In some embodiments, the above first time length includes: the second time length allowing the use of the second TCI state for PDSCH reception, and the interval time length when there is no expectation of PDCCH-scheduled PDSCH; where the second TCI state is the TCI state indicated by the network device from the TCI state list before the update according to the activation instruction; the interval time length is determined by the adjustment time lengths of the respective TCI states. In some embodiments, when the multiple TCI states respectively correspond to different TCI state lists and the terminal device has the first capability, The interval time length is determined by the maximum value among the adjustment time lengths of the respective TCI states. Optionally, the above terminal device having the first capability may mean that: the terminal device has the multi-path reception capability, and the terminal device does not have the capability to update multiple TCI state lists in parallel. In the above embodiments, since the terminal device does not have the capability to update multiple TCI state lists in parallel, in order to ensure the accuracy of the timing of reception through the TCI state, in this case, the terminal device can determine the above interval time length according to the maximum value among the adjustment time lengths of the respective TCI states, that is, ensure that after the time-frequency adjustment of the reference signal for all the above multiple TCI states is completed, start receiving using the new TCI state, such as receiving the PDSCH. That is to say, when multiple TCI states respectively correspond to different TCI state lists and the terminal device has the first capability, the above-mentioned multiple TCI state lists in the terminal device share a single interval duration (or it can be said that the above-mentioned multiple TCI state lists in the terminal device correspond to the same interval duration), that is, the interval duration corresponding to the maximum value among the adjustment durations of the respective multiple TCI states. For example, when multiple TCI states respectively correspond to different TCI state lists, the terminal device has multi-path reception capability, and the terminal device does not have the ability to update multiple TCI state lists in parallel, the above interval duration can be: TO k *(max(T first-SSB1 ,T first-SSB2 ,…)+T SSB-proc ) / NR; Wherein, the above T first-SSB1 ,T first-SSB2 ,… can be the adjustment durations of the respective multiple TCI states. In some embodiments, when multiple TCI states respectively correspond to different TCI state lists and the terminal device has the first capability, the step of receiving the PDSCH using the first TCI state after the first duration starting from the time point of receiving the activation signaling may include: After the first duration starting from the time point of receiving the activation signaling and after a continuous duration after receiving the first DCI scheduling multiple first TCI states, receive the physical downlink shared channel PDSCH using the multiple first TCI states indicated by the first DCI. Optionally, the above continuous duration may be the duration corresponding to QCL (timeDurationforQCL). When multiple TCI states respectively correspond to different TCI state lists and the terminal device has the first capability, if the terminal device receives a single DCI scheduling multiple first TCI states (that is, scheduling / indicating multiple new TCI states through sDCI), the terminal device may wait for timeDurationforQCL after receiving the sDCI, and then receive the PDSCH using the multiple first TCI states indicated by the sDCI. That is to say, the above embodiments provide a processing method for the terminal device to handle the sDCI scheduling multiple first TCI states when multiple TCI states respectively correspond to different TCI state lists and the terminal device has the first capability, ensuring the accuracy of the terminal device's processing of the sDCI scheduling multiple first TCI states when the terminal device has multi-path reception capability and does not have the ability to update multiple TCI state lists in parallel, and ensuring the accuracy of PDSCH reception. In some embodiments, after a first duration starting from the time point when the activation signaling is received, receiving the PDSCH using the first TCI state includes: After a first duration starting from the time point when the activation signaling is received and after a continuous duration after receiving a second DCI scheduling a single first TCI state, receiving the PDSCH using the single first TCI state indicated by the second DCI. Optionally, the above continuous duration may be timeDurationforQCL. Wherein, the second DCI is one of multiple DCIs sent by the network device to the terminal device when the network device schedules multiple TCI states for the terminal device using mDCI. When multiple TCI states respectively correspond to different TCI state lists and the terminal device has a first capability, when the network device schedules multiple first TCI states for the terminal device through multiple DCIs (that is, schedules / indicates multiple new TCI states through mDCI), for each DCI among the multiple DCIs, the terminal device may wait for timeDurationforQCL after receiving the DCI, and then receive the PDSCH using the first TCI state indicated by the DCI. That is to say, the above embodiments provide a processing method for the terminal device to handle the scheduling of multiple first TCI states by mDCI when multiple TCI states respectively correspond to different TCI state lists and the terminal device has a first capability, ensuring the parallelism of the terminal device to handle the case of the network device scheduling multiple first TCI states by mDCI when the terminal device has the multi-path reception capability but does not have the capability to update multiple TCI state lists in parallel, and ensuring the efficiency of PDSCH reception. In some embodiments, when multiple TCI states respectively correspond to different TCI state lists and the terminal device has a second capability, Multiple TCI state lists respectively correspond to their respective interval durations, and the interval duration corresponding to the first TCI state list is determined by the adjustment duration of the TCI state added to the first TCI state list among the multiple TCI states; Wherein, the first TCI state list is one of the multiple TCI state lists. Optionally, the fact that the terminal device has a second capability may mean that the terminal device has the multi-path reception capability and the terminal device has the capability to update multiple TCI state lists in parallel. In an embodiment of the present application, since the terminal device has the ability to update multiple TCI state lists in parallel, in order to ensure the parallelism of the reception timing through the TCI states, in this case, the terminal device can determine the corresponding interval duration for each of the multiple TCI state lists. Specifically, for each state list among the multiple TCI state lists, the interval duration corresponding to the TCI state list is determined according to the adjustment duration of the TCI state added to the TCI state list among the multiple TCI states indicated by the above activation signaling; that is to say, when multiple TCI states respectively correspond to different TCI state lists, the terminal device has the multi-path reception ability, and the terminal device has the ability to update multiple TCI state lists in parallel, for this TCI state list, after the terminal device completes the processing of the activation signaling and waits for the interval duration corresponding to the TCI state list, it can start receiving the PDSCH using the new TCI state in the TCI state list. In this embodiment, for multiple TCI state lists, the terminal device respectively determines the interval duration for each TCI state list for the newly added TCI state in each TCI state list, so that the usage timings of the multiple TCI state lists do not affect each other, thereby ensuring the parallelism of the reception timings through the TCI states in the multiple TCI state lists and improving the communication efficiency. That is to say, when multiple TCI states respectively correspond to different TCI state lists, the terminal device has the multi-path reception ability, and the terminal device does not have the ability to update multiple TCI state lists in parallel, the above multiple TCI state lists in the terminal device respectively correspond to their own interval durations (or it can be said that the above multiple TCI state lists in the terminal device can correspond to different interval durations), that is, the adjustment durations of the TCI states respectively added to the multiple TCI state lists. For example, when multiple TCI states respectively correspond to different TCI state lists and the terminal device has a second ability, for a certain TCI state list, the above interval duration can be: TO k *(max(T first-SSB )+T SSB-proc ) / NR; Wherein, the above T first-SSB is the adjustment duration of the TCI state added to the TCI state list among the multiple TCI states. Optionally, when the above activation signaling indicates adding two or more TCI states to a certain TCI state list among the multiple TCI state lists, the interval duration corresponding to the TCI state list can be determined by the maximum value of the adjustment durations of the two or more TCI states. For example, when multiple TCI states respectively correspond to different TCI state lists and the terminal device has a second capability, for a certain TCI state list, the above interval duration can be: TO k *(max(T first-SSB1 ,T first-SSB2 , …)+T SSB-proc ) / NR; Wherein, the above T first-SSB1 ,T first-SSB2 , … can be the adjustment durations of two or more TCI states added to this TCI state list respectively. In some embodiments, after a first duration starting from the time point when the activation signaling is received, receiving the PDSCH using the first TCI state includes: After a first duration starting from the time point when the activation signaling is received and after a first continuous duration after receiving the third DCI scheduling multiple new TCI states, receiving the PDSCH using the third TCI state among the multiple first TCI states indicated by the third DCI; Wherein, the interval duration in the first duration here is the first interval duration, the first interval duration is the interval duration corresponding to the second TCI state list, the third TCI state is a TCI state in the second TCI state list, and the second TCI state list is one of the multiple TCI state lists. Optionally, the above first continuous duration can be timeDurationforQCL, and this timeDurationforQCL can also be referred to as the post - processing time of the TCI state. That is to say, in the above embodiments, when multiple TCI states respectively correspond to different TCI state lists, the terminal device has multi - path receiving capability, and the terminal device has the ability to update multiple TCI state lists in parallel, multiple TCI state lists can correspond to their respective interval durations, and among the multiple first TCI states indicated by a single DCI, the enabling times of the new TCI states belonging to different TCI state lists are controlled by the interval durations of their respective corresponding TCI state lists, so as to ensure the parallelism of the switching of the TCI states used in different TCI state lists. In some embodiments, after a first duration starting from the time point when the activation signaling is received, receiving the PDSCH using the first TCI state includes: After the first long duration starting from the time point when the activation signaling is received, and after the second duration after receiving the fourth DCI scheduling multiple first TCI states, receive the PDSCH using the multiple first TCI states indicated by the fourth DCI; where the interval duration in the first duration here is the second interval duration, and the second interval duration is the maximum value among the interval durations corresponding to the multiple TCI state lists. Optionally, the above second duration can be timeDurationforQCL. In the embodiments of the present application, when multiple TCI states respectively correspond to different TCI state lists and the terminal device has the second capability, if the terminal device receives a single DCI scheduling multiple first TCI states, the terminal device can receive the PDSCH using the multiple first TCI states indicated by the DCI after the interval durations corresponding to the multiple TCI state lists are all reached. That is to say, in the above embodiments, when multiple TCI states respectively correspond to different TCI state lists and the terminal device has the second capability, the multiple TCI state lists can correspond to their respective interval durations, and for the TCI states in the multiple TCI states indicated by the DCI that belong to different TCI state lists, the enabling time is uniformly controlled by the maximum value among the interval durations of the multiple TCI state lists, thus simplifying the control logic for the enabling time of the multiple TCI states scheduled by a single DCI. In some embodiments, after the first duration starting from the time point when the activation signaling is received, receiving the PDSCH using the first TCI state includes: When the terminal device has the capability to receive multiple physical downlink control channels (PDCCH) simultaneously, after the first duration starting from the time point when the activation signaling is received, and after the third duration after receiving the fifth DCI scheduling a single first TCI state, receive the PDSCH using the first TCI state indicated by the fifth DCI; Where the interval duration in the first duration here is the third interval duration, the third interval duration is the interval duration corresponding to the third TCI state list, the first TCI state indicated by the fifth DCI is a TCI state in the third TCI state list, and the third TCI state list is one of the multiple TCI state lists. Optionally, the above third duration can be timeDurationforQCL. Where the above second DCI is one of the multiple DCIs sent by the network device to the terminal device when scheduling multiple TCI states using mDCI. That is to say, in the above embodiments, when multiple TCI states respectively correspond to different TCI state lists and the terminal device has the second capability, the multiple TCI state lists can correspond to their respective interval durations. If the terminal device has the capability of simultaneously receiving multiple physical downlink control channels (PDCCHs), and the network device indicates multiple first TCI states through multiple DCIs, the activation time of the first TCI states belonging to different TCI state lists is controlled by the interval durations of their respective corresponding TCI state lists, so as to ensure the parallelism of the switching of the TCI states used in different TCI state lists when scheduling multiple first TCI states through mDCI. In some embodiments, when multiple TCI states correspond to the same TCI state list, the interval duration is determined by the maximum value among the respective adjustment durations of the multiple TCI states. In the embodiments of the present application, if the multiple TCI states indicated by the activation signaling correspond to the same TCI state list, the above interval duration is determined by the maximum value among the respective adjustment durations of the multiple TCI states. For example, the above interval duration can be: TO k *(max(T first-SSB1 ,T first-SSB2 ,…)+T SSB-proc ) / NR; Wherein, the above T first-SSB1 ,T first-SSB2 , … can be the respective adjustment durations of the multiple TCI states indicated by the activation signaling. Based on the respective embodiments corresponding to FIGS. 4 to 6 above, the following will be introduced in detail through three solutions. Solution 1 Two or more TCI states belong to different TCI state lists, and the UE (corresponding to the above terminal device) supports the multi-Rx reception capability and has the capability of parallel updating of multiple TCI state lists simultaneously. Then: 1. The network side (corresponding to the above network device) triggers the same UE-specific PDSCH MAC-CE to activate the UE to start updating 2 or more active TCI state lists (such as simultaneousTCI-UpdateList1 and simultaneousTCI-UpdateList2), and adds 2 or more new TCI states to the lists for subsequent PDCCH (DCI) to schedule these TCI states for PDSCH reception. 2. Since it is the same MAC CE signaling, the time during which the UE can receive the PDSCH using the old TCI state can be: 3. After the UE receives and processes the activation signaling, it still needs to wait for a period of time (gap), i.e., TO k *(T first-SSB +T SSB-proc ) / NR slot length, and then the first slot after that is allowed to use new TCI state(s) from the new list(s) to schedule the reception of PDSCH. 4. If the UE does not support the ability to update multiple TCI state lists in parallel, the above gap (gap1) is TO k *(max(T first- SSB1 ,T first-SSB2 )+T SSB-proc ) / NR slot length, that is, after the relevant time-frequency adjustment is completed after processing the reference signals corresponding to the two TCI states (ending with the completion of the longest one, represented by max), new TCI states can be used to receive PDSCH. 4.1) After the above gap1, when the UE receives sDCI triggering the scheduling of two or more newly activated TCI states, the UE can start scheduling PDSCHs with the new two or more TCI states after timeDurationforQCL after the sDCI scheduling. 4.2) Alternatively, after the above gap1, when the UE receives mDCI triggering the scheduling of two or more newly activated TCI states, in one case: regardless of when DCI0 and 1 arrive, the UE should receive PDSCH0 with TCI state0 after timeDurationforQCL after receiving DCI0, and receive PDSCH1 with TCI state1 after timeDurationforQCL after receiving DCI1, and the two are not affected by each other. 4.3) Alternatively, after the above-mentioned gap1, when the UE receives an mDCI triggering the scheduling of two or more newly activated TCI states, another situation is that DCI0 and 1 call two TCI state PDSCH receptions corresponding to the same PDSCH, that is, PDSCH repeated reception (PDSCH repetition). At this time, if the UE is not capable of receiving FDMed unicast and multicast PDSCH per slot per carrier, it can be processed in a way other than the above-mentioned scheme. 5. If the UE supports the ability to update multiple TCI state lists in parallel, further optimization can be done, that is, the TCI state that completes the list update first (the shorter T first-SSB1 +T SSB-proc ), regardless of the fact that the other list is still being updated and is in a gap time when there is no TCI state available, the UE can start scheduling the reception of PDSCH0 on the new TCI state0 that first meets the above-mentioned time requirement gap0. After the DCI scheduling and timeDurationforQCL, the UE can start receiving PDSCH0. After the other TCI state 1 also completes the preparation time requirement gap1 (the longer T first-SSB2 +T SSB-proc ), it can also wait until timeDurationforQCL and then receive PDSCH1 and PDSCH0. 5.1) After the above-mentioned gap0, when the UE receives an sDCI triggering the scheduling of two or more newly activated TCI states, at this time, after the sDCI scheduling and timeDurationforQCL, the UE can start scheduling PDSCH0 with TCI state0, and the UE can not use TCI state 1 to schedule PDSCH1. Alternatively, after the above-mentioned gap1, when the UE receives an sDCI triggering the scheduling of two or more newly activated TCI states, the UE can start scheduling PDSCH0 and PDSCH1 with TCI state0 and TCI state1 after the sDCI scheduling and timeDurationforQCL. 5.2) Alternatively, after the above-mentioned gap1, when the UE receives an mDCI triggering the scheduling of two or more newly activated TCI states, one scenario is as follows: The UE has the ability to receive two or more PDCCHs simultaneously. At this time, regardless of when the PDCCHs to which DCI0 and DCI1 belong arrive or in which direction the TCI indicates, after timeDurationforQCL after receiving DCI0, the UE can receive PDSCH0 with TCI state0, and after timeDurationforQCL after receiving DCI1, the UE can receive PDSCH1 with TCI state1, and the parallel processing of the two is not affected. Among them, in Rel-18, in the mDCI scenario, whether the network configures two PDCCH transmissions with different QCL types D at the same time, the UE can receive two PDCCHs with different QCL types D according to the UE's capabilities, and this QCL type is associated with different CoresetPoolIndex. 5.3) Alternatively, after the above-mentioned gap1, when the UE receives an mDCI triggering the scheduling of two or more newly activated TCI states, another scenario is as follows: The UE does not have the ability to receive two or more PDCCHs simultaneously. At this time, the UE processes serially. For the case where DCI0 and DCI1 call two TCI states corresponding to the same PDSCH (PDSCH repetition), if the UE is not capable of receiving FDMed unicast and multicast PDSCH per slot per carrier. Solution 2 Two or more TCI states belong to the same TCI state list, and the UE supports multi-Rx reception capability. 1. The network side triggers the same UE specific PDSCH MAC-CE to activate the UE to start updating the same active TCI state list (such as simultaneousTCI-UpdateList1), and adds two or more new TCI states to the list for subsequent PDCCH (DCI) to schedule these TCI states for PDSCH reception. 2. Since it is the same MACCE signaling, the time during which the UE can receive the PDSCH using the old TCI state can be: 3. After the UE receives and processes the activation signaling, it still needs to wait for a period of time (gap), and the gap is TO k *(max(T first-SSB1 ,T first- SSB2 ) + TSSB-proc) / NR slot length, that is, after processing the reference signals corresponding to two TCI states and completing the relevant time-frequency adjustment (ending with the completion of the longest one, max), two or more new TCI states can be used to simultaneously receive the PDSCH. Solution 3 Two or more TCI states belong to the same TCI state list, and the UE supports the multi-Rx reception capability and the ability to update multiple TCI state lists in parallel simultaneously. 1. The network side triggers two different UE-specific PDSCH MAC-CEs to activate the UE to start updating two or more new TCI states in the same active TCI state list (such as simultaneousTCI-UpdateList1) and add them to the list for subsequent PDCCH (DCI) to schedule these TCI states for PDSCH reception. 2. Since they are different MAC CE signals, the time during which the UE can receive the PDSCH using the old TCI state (i.e., ) may also be inconsistent due to different arrival or processing times of the MAC CE. 3. Whether in the mDCI or sDCI scenario, after the UE receives and processes the activation signaling, it still needs to wait for a period of time (gap), and the gap is TO k *(max(T first-SSB1 ,T first-SSB2 ) + T SSB-proc ) / NR slot length, that is, after processing the reference signals corresponding to two TCI states and completing the relevant time-frequency adjustment (ending with the completion of the longest one, max), two or more new TCI states can be used to simultaneously receive the PDSCH. Please refer to FIG. 7, which shows a block diagram of a communication device provided by an embodiment of the present application. The communication device has the functions executed by the terminal device in the method shown in any one of FIGS. 4 to 6 above. As shown in FIG. 7, the device may include: A receiving module 701, configured to receive activation signaling, where the activation signaling is used to indicate adding multiple TCI states to one or more TCI state lists; The receiving module 701 is further configured to receive a Physical Downlink Shared Channel (PDSCH) using a first Transmission Configuration Indicator (TCI) state after a first duration starting from the time point when the activation signaling is received; the first TCI state is the TCI state indicated by the network device from the updated TCI state list according to the activation instruction; the first duration is determined by the adjustment duration of each of the multiple TCI states; the adjustment duration is the duration for completing the time-frequency adjustment of the reference signal corresponding to the TCI state. In some embodiments, the receiving module 701 is configured to: After the time point when the activation signaling is received, receive Downlink Control Information (DCI) sent by the network device, where the DCI is used to indicate that the terminal device receives the PDSCH through the first TCI state; After a first duration starting from the time point when the activation signaling is received, start receiving the PDSCH using the first TCI state. In some embodiments, the first duration includes: A second duration allowing the use of a second TCI state for PDSCH reception, and an interval duration during which no Physical Downlink Control Channel (PDCCH) scheduling is expected for the PDSCH; wherein the second TCI state is the TCI state indicated by the network device from the TCI state list before the update according to the activation instruction; the interval duration is determined by the adjustment duration of each of the multiple TCI states. In some embodiments, when the multiple TCI states respectively correspond to different TCI state lists and the terminal device has a first capability, The interval duration is determined by the maximum value of the adjustment duration of each of the multiple TCI states. In some embodiments, the terminal device having the first capability includes: The terminal device has multi-reception capability and does not have the capability to update multiple TCI state lists in parallel. In some embodiments, the receiving module 701 is configured to receive the Physical Downlink Shared Channel (PDSCH) using multiple first TCI states indicated by a first DCI after a first duration starting from the time point when the activation signaling is received and after a continuous duration after receiving the first DCI scheduling multiple first TCI states. In some embodiments, the receiving module 701 is configured to receive the PDSCH using a single first TCI state indicated by a second DCI after a first duration starting from the time point when the activation signaling is received and after a continuous duration after receiving the second DCI scheduling a single first TCI state. In some embodiments, when the multiple TCI states respectively correspond to different TCI state lists and the terminal device has a second capability, the multiple TCI state lists respectively correspond to their respective interval durations, and the interval duration corresponding to the first TCI state list is determined by the adjustment duration of the TCI state added to the first TCI state list among the multiple TCI states; wherein, the first TCI state list is one of the multiple TCI state lists. In some embodiments, the second capability of the terminal device includes: the terminal device has multi - path reception capability, and the terminal device has the capability to update multiple TCI state lists in parallel. In some embodiments, the receiving module 701 is configured to, after a first duration starting from the time point when the activation signaling is received and after a first continuous duration after receiving a third DCI scheduling multiple first TCI states, receive a PDSCH using a third TCI state among the multiple first TCI states indicated by the third DCI; wherein, the interval duration in the first duration is a first interval duration, the first interval duration is the interval duration corresponding to a second TCI state list, the third TCI state is a TCI state in the second TCI state list, and the second TCI state list is one of the multiple TCI state lists. In some embodiments, the receiving module 701 is configured to, after a first duration starting from the time point when the activation signaling is received and after a second continuous duration after receiving a fourth DCI scheduling multiple first TCI states, receive a PDSCH using the multiple first TCI states indicated by the fourth DCI; wherein, the interval duration in the first duration is a second interval duration, and the second interval duration is the maximum value among the interval durations respectively corresponding to the multiple TCI state lists. In some embodiments, when the terminal device has the capability to simultaneously receive multiple physical downlink control channels (PDCCHs), the receiving module 701 is configured to, after a first duration starting from the time point when the activation signaling is received and after a third continuous duration after receiving a fifth DCI scheduling a single first TCI state, receive a PDSCH using the first TCI state indicated by the fifth DCI; Among them, the interval duration in the first duration is the third interval duration, the third interval duration is the interval duration corresponding to the third TCI state list, the first TCI state indicated by the fifth DCI is the TCI state in the third TCI state list, and the third TCI state list is one of the multiple TCI state lists. In some embodiments, when the multiple TCI states correspond to the same TCI state list, the interval duration is determined by the maximum value among the respective adjustment durations of the multiple TCI states. Optionally, the above device may further include a sending module, which is configured to send signals or data to a network device. Please refer to FIG. 8, which shows a block diagram of a communication device provided in an embodiment of the present application. The communication device has the functions performed by the network device in the method shown in any one of FIGS. 4 to 6 above. As shown in FIG. 8, the device may include: A sending module 801, configured to send an activation signaling to a terminal device, where the activation signaling is used to indicate adding multiple TCI states to one or more TCI state lists; the activation signaling is used for the terminal device to receive a PDSCH using a first TCI state after a first duration starting from the time point when the activation signaling is received; the first TCI state is the TCI state indicated by the network device from the TCI state list updated according to the activation instruction; the first duration is determined by the respective adjustment durations of the multiple TCI states; the adjustment duration is the duration for completing the time-frequency adjustment of the reference signal corresponding to the TCI state. In some embodiments, the sending module is further configured to send DCI to the terminal device after sending the activation signaling, where the DCI is used to instruct the terminal device to receive a PDSCH through the first TCI state. In some embodiments, the first duration includes: A second duration allowing the use of a second TCI state for PDSCH reception, and an interval duration for a PDSCH not expected to be scheduled by a PDCCH; Among them, the second TCI state is the TCI state indicated by the network device from the TCI state list before being updated according to the activation instruction; the interval duration is determined by the respective adjustment durations of the multiple TCI states. In some embodiments, when the multiple TCI states respectively correspond to different TCI state lists and the terminal device has a first capability, the interval duration is determined by the maximum value among the respective adjustment durations of the multiple TCI states. In some embodiments, the terminal device having a first capability includes: The terminal device has multi-channel receiving capabilities and does not have the ability to update multiple TCI status lists in parallel. In some embodiments, when the multiple TCI states respectively correspond to different TCI status lists and the terminal device has a second capability, the multiple TCI status lists respectively correspond to their respective interval durations, and the interval duration corresponding to the first TCI status list is determined by the adjustment duration of the TCI state added to the first TCI status list among the multiple TCI states; wherein, the first TCI status list is one of the multiple TCI status lists. In some embodiments, the second capability of the terminal device includes: The terminal device has multi-channel receiving capabilities and has the ability to update multiple TCI status lists in parallel. In some embodiments, when the multiple TCI states correspond to the same TCI status list, the interval duration is determined by the maximum value among the adjustment durations of the multiple TCI states. Optionally, the above device may further include a receiving module, which is configured to receive signals or data sent by the terminal device. It should be noted that when the device provided in the above embodiments implements its functions, only the above-mentioned division of each functional module is used for illustration. In actual applications, the above functions may be allocated to different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above. Regarding the device in the above embodiments, the specific manner in which each module performs operations has been described in detail in the embodiments related to the method, and will not be elaborated here. Please refer to FIG. 9, which shows a schematic structural diagram of a communication device 900 provided in an embodiment of the present application. The communication device 900 may include: a processor 901, a receiver 902, a transmitter 903, a memory 904, and a bus 905. The processor 901 includes one or more processing cores. The processor 901 executes various functional applications and information processing by running software programs and modules. The receiver 902 and the transmitter 903 may be implemented as a communication component, and the communication component may be a communication chip. The communication chip may also be referred to as a transceiver. The memory 904 is connected to the processor 901 through the bus 905. The memory 904 may be used to store computer programs, and the processor 901 is configured to execute the computer programs to implement the various steps in the above method embodiments. In addition, the memory 904 can be implemented by any type of volatile or non-volatile storage device or a combination thereof. Volatile or non-volatile storage devices include, but are not limited to: magnetic or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static random access memory, read-only memory, magnetic memory, flash memory, programmable read-only memory. In an exemplary solution, when the communication device 900 is implemented as the above terminal device, the receiver 902 and the processor 901 execute the computer program so that the communication device implements each step performed by the terminal device in any of the methods shown in FIGS. 4 to 6. In an exemplary solution, when the communication device 900 is implemented as the above network device, the transmitter 903 and the processor 901 execute the computer program so that the communication device implements each step performed by the network device in any of the methods shown in FIGS. 4 to 6. The embodiment of the present application also provides a computer-readable storage medium. A computer program is stored in the storage medium. The computer program is loaded and executed by a processor to implement all or part of the steps performed by the terminal device or the network device in any of the methods shown in FIGS. 4 to 6 above. The present application also provides a chip. The chip includes an integrated circuit and firmware provided in the integrated circuit. The chip is used to run in a communication device so that the communication device performs all or part of the steps performed by the terminal device or the network device in any of the methods shown in FIGS. 4 to 6 above. The present application also provides a computer program product. The computer program product or the computer program includes computer instructions. The computer instructions are stored in a computer-readable storage medium. The processor of the communication device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions so that the communication device performs all or part of the steps performed by the terminal device or the network device in any of the methods shown in FIGS. 4 to 6 above. The present application also provides a computer program. The computer program is executed by the processor of the communication device to implement all or part of the steps performed by the terminal device or the network device in any of the methods shown in FIGS. 4 to 6 above. Those skilled in the art should be able to realize that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented by hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. The computer-readable medium includes computer storage media and communication media, where the communication media includes any medium that facilitates the transfer of a computer program from one place to another. The storage media can be any available medium accessible by a general-purpose or special-purpose computer. The above are only exemplary embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the protection scope of the present application.

Claims

1. A communication method, characterized in that, the method is executed by a terminal device, and the method includes: receiving an activation signaling for instructing to add a plurality of TCI states to one or more TCI state lists; after a first duration starting from the time point when the activation signaling is received, receiving a physical downlink shared channel PDSCH using a first TCI state; the first TCI state is a TCI state indicated by a network device from the TCI state list updated according to the activation instruction; the first duration is determined by the respective adjustment durations of the plurality of TCI states; the adjustment duration is the duration for completing the time-frequency adjustment of the reference signal corresponding to the TCI state.

2. The method according to claim 1, characterized in that, the receiving a physical downlink shared channel PDSCH using a first TCI state after a first duration starting from the time point when the activation signaling is received includes: after the time point when the activation signaling is received, receiving downlink control information DCI sent by the network device, the DCI being used to instruct the terminal device to receive the PDSCH through the first TCI state; starting to receive the PDSCH using the first TCI state after a first duration starting from the time point when the activation signaling is received.

3. The method according to claim 1 or 2, characterized in that, the first duration includes: a second duration allowing the use of a second TCI state for PDSCH reception, and an interval duration for a PDSCH not expected to be scheduled by a PDCCH; wherein, the second TCI state is a TCI state indicated by the network device from the TCI state list before the update according to the activation instruction; the interval duration is determined by the respective adjustment durations of the plurality of TCI states.

4. The method according to claim 3, characterized in that, in the case where the plurality of TCI states respectively correspond to different TCI state lists and the terminal device has a first capability, the interval duration is determined by the maximum value of the respective adjustment durations of the plurality of TCI states.

5. The method according to claim 4, characterized in that, the terminal device having a first capability includes: the terminal device has multi-reception capability and the terminal device does not have the capability to update multiple TCI state lists in parallel.

6. The method according to claim 4 or 5, characterized in that, the receiving a physical downlink shared channel PDSCH using a first TCI state after a first duration starting from the time point when the activation signaling is received includes: after a first duration starting from the time point when the activation signaling is received and after a continuous duration after receiving a first DCI scheduling a plurality of the first TCI states, receiving the PDSCH using the plurality of first TCI states indicated by the first DCI.

7. The method according to claim 4 or 5, characterized in that, the receiving a physical downlink shared channel PDSCH using a first TCI state after a first duration starting from the time point when the activation signaling is received includes: After a first duration starting from the time point when the activation signaling is received, and after a continuous duration after receiving a second DCI scheduling a single one of the first TCI states, receive the PDSCH using the single one of the first TCI states indicated by the second DCI.

8. The method according to claim 3, wherein, in the case that the plurality of TCI states respectively correspond to different TCI state lists and the terminal device has a second capability, the plurality of TCI state lists respectively correspond to their respective interval durations, and the interval duration corresponding to the first TCI state list is determined by the adjustment duration of the TCI states added to the first TCI state list among the plurality of TCI states; wherein, the first TCI state list is one of the plurality of TCI state lists.

9. The method according to claim 8, wherein, the terminal device having the second capability includes: the terminal device has multi - reception capability, and the terminal device has the capability of parallel updating for a plurality of the TCI state lists.

10. The method according to claim 8 or 9, wherein, the receiving the PDSCH using the first TCI state after a first duration starting from the time point when the activation signaling is received includes: after a first duration starting from the time point when the activation signaling is received, and after a first continuous duration after receiving a third DCI scheduling a plurality of the new TCI states, receive the PDSCH using a third TCI state among the plurality of the first TCI states indicated by the third DCI; wherein, the interval duration in the first duration is a first interval duration, the first interval duration is the interval duration corresponding to a second TCI state list, the third TCI state is a TCI state in the second TCI state list, and the second TCI state list is one of the plurality of TCI state lists.

11. The method according to claim 8 or 9, wherein, the receiving the PDSCH using the first TCI state after a first duration starting from the time point when the activation signaling is received includes: after a first duration starting from the time point when the activation signaling is received, and after a second continuous duration after receiving a fourth DCI scheduling a plurality of the new TCI states, receive the PDSCH using the plurality of the first TCI states indicated by the fourth DCI; wherein, the interval duration in the first duration is a second interval duration, and the second interval duration is the maximum value among the interval durations respectively corresponding to the plurality of TCI state lists.

12. The method according to claim 8 or 9, wherein, the receiving the PDSCH using the first TCI state after a first duration starting from the time point when the activation signaling is received includes: When the terminal device has the ability to receive multiple Physical Downlink Control Channels (PDCCH) simultaneously, after a first duration starting from the time point when the activation signaling is received, and after a third duration after receiving the fifth Downlink Control Information (DCI) that schedules a single first Transmission Configuration Indicator (TCI) state, receive the Physical Downlink Shared Channel (PDSCH) using the first TCI state indicated by the fifth DCI; Wherein, the interval duration in the first duration is the third interval duration, the third interval duration is the interval duration corresponding to the third TCI state list, the first TCI state indicated by the fifth DCI is the TCI state in the third TCI state list, and the third TCI state list is one of the multiple TCI state lists.

13. The method according to claim 3, Characterized in that, When the multiple TCI states correspond to the same TCI state list, the interval duration is determined by the maximum value among the respective adjustment durations of the multiple TCI states.

14. A communication method, Characterized in that, The method is executed by a network device, and the method includes: Sending activation signaling to a terminal device, the activation signaling being used to indicate adding multiple TCI states to one or more TCI state lists; the activation signaling being used for the terminal device to receive the PDSCH using a first TCI state after a first duration starting from the time point when the activation signaling is received; the first TCI state being the TCI state indicated by the network device from the TCI state list updated according to the activation instruction; the first duration being determined by the respective adjustment durations of the multiple TCI states; the adjustment duration being the duration to complete the time-frequency adjustment of the reference signal corresponding to the TCI state.

15. The method according to claim 14, Characterized in that, The method further includes: After sending the activation signaling, sending DCI to the terminal device, the DCI being used to indicate that the terminal device receives the PDSCH through the first TCI state.

16. The method according to claim 14 or 15, Characterized in that, The first duration includes: A second duration allowing the use of a second TCI state for PDSCH reception, and an interval duration for the PDSCH not expected to be scheduled by the PDCCH; Wherein, the second TCI state is the TCI state indicated by the network device from the TCI state list before the update according to the activation instruction; the interval duration is determined by the respective adjustment durations of the multiple TCI states.

17. The method according to claim 16, Characterized in that, When the multiple TCI states respectively correspond to different TCI state lists and the terminal device has a first capability, The interval duration is determined by the maximum value among the respective adjustment durations of the multiple TCI states.

18. The method according to claim 17, Characterized in that, The terminal device having the first capability includes: The terminal device has multi-path reception capability, and the terminal device does not have the ability to parallelize multiple TCI state lists Updated capabilities.

19. The method according to claim 16, wherein, when the multiple TCI states respectively correspond to different TCI state lists and the terminal device has a second capability, the multiple TCI state lists respectively correspond to their respective interval durations, and the interval duration corresponding to the first TCI state list is determined by the adjustment duration of the TCI state added to the first TCI state list among the multiple TCI states; wherein, the first TCI state list is one of the multiple TCI state lists.

20. The method according to claim 19, wherein, the terminal device having the second capability includes: the terminal device has multi-path reception capability, and the terminal device has the capability of parallel updating of multiple TCI state lists.

21. The method according to claim 16, wherein, when the multiple TCI states correspond to the same TCI state list, the interval duration is determined by the maximum value among the adjustment durations of the multiple TCI states.

22. A communication device, wherein, the device includes: a receiving module, configured to receive an activation signaling for indicating adding multiple TCI states to one or more TCI state lists; the receiving module is further configured to receive a PDSCH using a first TCI state after a first duration starting from the time point when the activation signaling is received; the first TCI state is a TCI state indicated by a network device from the TCI state list updated according to the activation instruction; the first duration is determined by the adjustment durations of the multiple TCI states; the adjustment duration is the duration for completing the time-frequency adjustment of the reference signal corresponding to the TCI state.

23. A communication device, wherein, the device includes: a sending module, configured to send an activation signaling to a terminal device, the activation signaling for indicating adding multiple TCI states to one or more TCI state lists; the activation signaling is for the terminal device to receive a PDSCH using a first TCI state after a first duration starting from the time point when the activation signaling is received; the first TCI state is a TCI state indicated by a network device from the TCI state list updated according to the activation instruction; the first duration is determined by the adjustment durations of the multiple TCI states; the adjustment duration is the duration for completing the time-frequency adjustment of the reference signal corresponding to the TCI state.

24. A communication device, wherein, the terminal device includes a processor, a memory, and a transceiver; a computer program is stored in the memory, and the processor executes the computer program to enable the network device to implement the communication method according to any one of claims 1 to 21 above.

25. A computer-readable storage medium, wherein, The computer program is stored in the storage medium and is used to be executed by a processor of a communication device, so that the communication device implements the communication method according to any one of claims 1 to 21.

26. A chip, characterized in that the chip includes an integrated circuit and firmware provided in the integrated circuit, and the chip is used to run in a communication device, so that the communication device executes the communication method according to any one of claims 1 to 21.

27. A computer program product, characterized in that the computer program product includes computer instructions, and the computer instructions are stored in a computer-readable storage medium; a processor of a communication device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, so that the communication device executes the communication method according to any one of claims 1 to 21.

28. A computer program, characterized in that the computer program is executed by a processor of a communication device, so that the communication device implements the communication method according to any one of claims 1 to 21.

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