Tci state updating method and apparatus, communication device, system, and storage medium

Abstract

The application discloses a TCI state updating method and device, communication equipment, a system and a storage medium, and belongs to the technical field of communication. The TCI state updating method provided by the application comprises the following steps: a UE acquires target indication information; and a first TCI state list is updated according to the target indication information, wherein the updated first TCI state list takes effect after a first time slot, and the first time slot is determined according to the time length required by the updating process of the first TCI state list.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of communication, and particularly relates to a TCI state updating method and device, a communication device, a system and a storage medium. BACKGROUND

[0002] A network side device can send a transmission configuration indication (TCI) to a user equipment (UE) to schedule the UE to perform uplink and downlink data transmission. For the validity time of the TCI, for example, in an independent TCI scenario or a joint TCI scenario, the network side device and the UE side need to keep consistent on the validity time of the TCI to ensure the uplink and downlink data transmission performance when the network side device schedules the UE. However, how the UE determines the validity time of the TCI is a problem to be solved. SUMMARY

[0003] Embodiments of the application provide a TCI state updating method and device, a communication device, a system and a storage medium, which can solve the problem of how the UE determines the validity time of the TCI.

[0004] In a first aspect, a TCI state updating method is provided, which includes: a UE obtaining target indication information; and updating a first TCI state list according to the target indication information, wherein the updated first TCI state list takes effect after a first time slot, and the first time slot is determined according to a time length required by an updating process of the first TCI state list.

[0005] In a second aspect, a TCI state updating device is provided, which includes: an obtaining module and an updating module. The obtaining module is configured to obtain target indication information. The updating module is configured to update a first TCI state list according to the target indication information obtained by the obtaining module, wherein the updated first TCI state list takes effect after a first time slot, and the first time slot is determined according to a time length required by an updating process of the first TCI state list.

[0006] In a third aspect, a TCI state updating method is provided, which includes: a network side device sending target indication information to a UE, the target indication information being used by the UE to update a first TCI state list, wherein the updated first TCI state list takes effect after a first time slot, and the first time slot is determined according to a time length required by an updating process of the first TCI state list.

[0007] In a fourth aspect, a TCI state updating apparatus is provided, which comprises a sending module. The sending module is configured to send target indication information to a UE, wherein the target indication information is used by the UE to update a first TCI state list, and wherein the updated first TCI state list takes effect after a first time slot, which is determined according to a time length required by an updating process of the first TCI state list.

[0008] In a fifth aspect, a UE is provided, which comprises a processor and a memory storing programs or instructions executable on the processor, and the programs or instructions are executed by the processor to implement the steps of the method according to the first aspect.

[0009] In a sixth aspect, a UE is provided, which comprises a processor and a communication interface, wherein the processor is configured to obtain target indication information by the UE, and update a first TCI state list according to the target indication information, and wherein the updated first TCI state list takes effect after a first time slot, which is determined according to a time length required by an updating process of the first TCI state list.

[0010] In a seventh aspect, a network side device is provided, which comprises a processor and a memory storing programs or instructions executable on the processor, and the programs or instructions are executed by the processor to implement the steps of the method according to the third aspect.

[0011] In an eighth aspect, a network side device is provided, which comprises a processor and a communication interface, wherein the communication interface is configured to send target indication information to a UE, and the target indication information is used by the UE to update a first TCI state list, and wherein the updated first TCI state list takes effect after a first time slot, which is determined according to a time length required by an updating process of the first TCI state list.

[0012] In a ninth aspect, a communication system is provided, which comprises a UE and a network side device, wherein the UE is configured to implement the steps of the TCI state updating method according to the first aspect, and the network side device is configured to implement the steps of the TCI state updating method according to the third aspect.

[0013] In a tenth aspect, a readable storage medium is provided, which stores programs or instructions, and the programs or instructions are executed by a processor to implement the steps of the method according to the first aspect, or implement the steps of the method according to the third aspect.

[0014] In an eleventh aspect, a chip is provided, which comprises a processor and a communication interface, wherein the communication interface and the processor are coupled, and the processor is configured to run programs or instructions to implement the method according to the first aspect, or implement the method according to the third aspect.

[0015] In a twelfth aspect, a computer program / program product is provided, which is stored in a storage medium, and is executed by at least one processor to implement the steps of the TCI state updating method according to the first aspect, or to implement the steps of the TCI state updating method according to the third aspect.

[0016] In the embodiments of the present application, the UE can update the first TCI state list according to the target indication information, and the updated first TCI state list takes effect after a first time slot determined according to the time length required by the updating process of the first TCI state list. In the present scheme, after updating the first TCI state list, the UE can determine the effective time of the updated first TCI state list according to the time length required by the updating process of the first TCI state list, that is, the effective time of the TCI can be flexibly determined according to the time length required by the updating process of the first TCI state list, which facilitates the scheduling of the UE by the network side device, and also increases the flexibility of the UE in the effectiveness of the TCI state list, thereby avoiding the loss of transmission performance of uplink and downlink data when the network side device schedules the UE. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of an architecture of a wireless communication system provided by the embodiments of the present application;

[0018] Figure 2 is one of the schematic diagrams of a TCI state updating method provided by the embodiments of the present application;

[0019] Figure 3 is another schematic diagram of a TCI state updating method provided by the embodiments of the present application;

[0020] Figure 4 is a third schematic diagram of a TCI state updating method provided by the embodiments of the present application;

[0021] Figure 5 is a fourth schematic diagram of a TCI state updating method provided by the embodiments of the present application;

[0022] Figure 6 is a flowchart of a TCI state updating method provided by the embodiments of the present application;

[0023] Figure 7 is a fifth schematic diagram of a TCI state updating method provided by the embodiments of the present application;

[0024] Figure 8 is a schematic diagram of a TCI state updating apparatus provided by the embodiments of the present application;

[0025] Figure 9 FIG. 2 is a structural schematic diagram of a TCI state updating device according to an embodiment of the present application;

[0026] Figure 10 FIG. 3 is a hardware structural schematic diagram of a communication device according to an embodiment of the present application;

[0027] Figure 11 FIG. 4 is a hardware structural schematic diagram of a UE according to an embodiment of the present application;

[0028] Figure 12 FIG. 5 is a hardware structural schematic diagram of a network side device according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0030] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" are generally a category, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the front and rear associated objects are in an "or" relationship.

[0031] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied outside the NR system application, such as a 6th Generation (6G) communication system. th

[0032] Figure 1 ​A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a terminal-side device such as a mobile phone, a Tablet Personal Computer, a Laptop Computer, a Personal Digital Assistant (PDA), a palmtop computer, a netbook, an ultra-mobile personal computer (UMPC), a Mobile Internet Device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (a home device with a wireless communication function such as a refrigerator, a television, a washing machine, or furniture), a game console, a personal computer (PC), a kiosk, or a self-service machine, and the wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart anklet, a smart necklace, and the like), a smart wristband, smart clothing, and the like. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device, and the access network device 12 can also be referred to as a radio access network device, a radio access network (RAN), a radio access network function, or a radio access network unit. The access network device 12 can include a base station, a WLAN access point, or a WiFi node, and the base station can be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home node B, a home evolved node B, a transmitting receiving point (TRP), or some other appropriate terminology in the art, as long as the same technical effects are achieved. The base station is not limited to a specific technical term, and it should be noted that only a base station in an NR system is taken as an example for description in the embodiments of the present application, and the specific type of the base station is not limited.

[0033] Some concepts and / or terms involved in the TCI state updating method, apparatus, communication device, system and storage medium provided by the embodiments of the present application are explained as follows.

[0034] Carrier Aggregaion (CA): In order to meet the requirements of single-user peak rate and system capacity improvement, the most direct method is to increase the system transmission bandwidth. Therefore, a technology for increasing transmission bandwidth, CA, is introduced. The CA technology can aggregate 2-5 LTE component carriers (CCs) together to realize a maximum transmission bandwidth of 100MHz, effectively improving the uplink and downlink transmission rates. The CA function can support continuous or non-continuous carrier aggregation, and the maximum resource that can be used for each carrier is 110 RBs. Each user uses an independent hybrid automatic repeat request (HARQ) entity on each carrier, and each transmission block can only be mapped to a specific carrier. The physical downlink control channels (PDCCHs) on each carrier are independent of each other, and the PDCCH of each carrier can be used to allocate resources for the physical downlink shared channel (PDSCH) of each carrier.

[0035] The TCI state updating method provided by the embodiments of the present application is described in detail below in combination with the accompanying drawings and some embodiments and application scenarios thereof.

[0036] Currently, for the scenario of separate TCI, the switching time of uplink and the switching time of downlink can be different, that is, the uplink TCI and the downlink TCI can have independent effective times. Even for joint TCI, uplink and downlink can also have independent effective times.

[0037] In the TCI updating method, for the TCI indicated by the media access control-control element (MAC CE), the definition of the effective time is defined for the single-carrier scenario, and can be directly reused in the multi-carrier scenario, that is, the scenario of independent TCI configuration for each carrier. A specific channel on each carrier, such as PDSCH, PDCCH, physical uplink shared channel (PUSCH), etc., can have independent TCI or spatial relation (SR) effective time, so the uplink and downlink are obviously independent. The existing solution will cause the following problems:

[0038] 1. The downlink TCI is completely independent, meaning that when the downlink TCI is active, the uplink TCI may not be active; or when the downlink TCI is active, the uplink TCI may not be active. This may bring an ambiguous time interval for TCI in network scheduling, making it difficult for the network or UE to identify the cause of the transmission problem, thus affecting the network's further decision-making.

[0039] 2. When the UE performs uplink TCI handover or downlink TCI handover, it is also limited by the margin of TCI handover time and cannot complete a unified handover. For example, the uplink beam handover time is earlier than the downlink beam handover time, causing the UE's uplink and downlink beams to be inconsistent, thus affecting transmission performance.

[0040] 3. The effective time of existing technologies is difficult to extend to multi-carrier scenarios (carrier aggregation).

[0041] In this embodiment, the UE can update the first TCI state list according to the target indication information. The updated first TCI state list takes effect after the first time slot, which is determined based on the duration required for the update process of the first TCI state list. In this scheme, after updating the first TCI state list, the UE can determine the effective time of the updated first TCI state list based on the duration required for the update process. That is, the effective time of TCI can be flexibly determined based on the duration required for the update process of the first TCI state list, which facilitates the scheduling of the UE by the network-side equipment and also increases the flexibility of the UE in determining the effectiveness of the TCI state list, thereby avoiding the loss of uplink and downlink data transmission performance when the network-side equipment schedules the UE.

[0042] This application provides a TCI state update method. Figure 2 A flowchart illustrating a Transmission Configuration Indicator (TCI) status update according to an embodiment of this application is shown. Figure 2 As shown, the Transmission Configuration Indicator (TCI) status update method provided in this application embodiment may include the following steps 201 and 202.

[0043] Step 201: The UE obtains target indication information.

[0044] In this embodiment of the application, the target indication information is used to instruct the UE to update the first TCI state list (i.e., the MAC-CE list), which contains at least one TCI state.

[0045] Optionally, in this embodiment of the application, the target indication information is configured by the network-side device.

[0046] Optionally, in the embodiments of this application, combined with Figure 2,like Figure 3 As shown, step 201 can be implemented through steps 201a and 201b below.

[0047] Step 201a: The network-side device sends target indication information to the UE.

[0048] Step 201b: The UE receives target indication information sent by the network-side device.

[0049] Optionally, in the embodiments of this application, step 201a can be implemented by step 201a1, and step 201b can be implemented by step 201b1.

[0050] Step 201a1: The network-side device sends a MAC CE signaling message to the UE.

[0051] In this embodiment of the application, the MAC CE signaling includes target indication information.

[0052] Step 201b1: The UE receives the MAC CE signaling sent by the network-side device.

[0053] Optionally, in the embodiments of this application, combined with Figure 2 ,like Figure 4 As shown, prior to step 201 above, the Transmission Configuration Indicator (TCI) status update method provided in this application embodiment further includes steps 301 and 302 as described below.

[0054] Step 301: The network-side device sends the target configuration information to the UE.

[0055] In this embodiment of the application, the target configuration information is used to configure a second TCI state list and a reference signal set for the UE. The TCI in the second TCI state list is used to indicate the source reference signal information of at least one quasi-co-location (QCL).

[0056] Step 302: The UE receives the target configuration information sent by the network-side device.

[0057] Optionally, in this embodiment, the network-side device can configure a second TCI state list (i.e., an RRC list) via Radio Resource Control (RRC) signaling. Each TCI state indicates source reference signal information for one or two QCL relationships or uplink beam relationships. This TCI state list includes uplink TCI and downlink TCI, or includes joint TCI. The second TCI state list contains at least two TCI states. The complete set of TCI states in the first TCI state list is a subset of the complete set of TCI states in the second TCI state list.

[0058] It should be noted that the uplink TCI and downlink TCI are independent TCIs. The combined TCI and independent TCI are not configured to the UE together via RRC.

[0059] Optionally, in this embodiment, the network-side device can configure a set of reference signals (RS) and further configure the QCL relationship of these reference signals according to the configured second TCI state list. Among the various reference signal configurations, there is a reference signal used to determine downlink path loss in order to calculate uplink transmit power, namely the path loss reference signal (PL-RS). This type of reference signal can establish a connection with the uplink TCI or joint TCI. That is, if a certain uplink TCI or joint TCI is active, the UE also needs to maintain this PL-RS. When the list of active uplink TCIs changes, the corresponding path loss reference signal also changes accordingly.

[0060] Optionally, in this embodiment of the application, after receiving the MAC CE, the UE can first demodulate the corresponding PDSCH, and according to the cyclic redundancy check (CRC) verification status, after the physical layer sends back an acknowledgment (ACK) or a non-acknowledgment (NACK), extract the MAC CE from the data uploaded from the physical layer to the MAC layer, and decode the first TCI state list indicated by this MAC CE.

[0061] It should be noted that before the UE completes MAC CE decoding, the UE cannot obtain any information from the first TCI status list. Therefore, the UE can perform downlink (DL) / uplink (UL) scheduling monitoring, uplink and downlink data transmission, and related ACK / NACK feedback based on the original first TCI status list.

[0062] Step 202: The UE updates the first TCI status list according to the target indication information.

[0063] In this embodiment of the application, the updated first TCI status list takes effect after the first time slot, which is determined according to the duration required for the update process of the first TCI status list.

[0064] Optionally, in this embodiment of the application, the time required for updating the first TCI status list includes:

[0065] (1) The total processing time required for updating the transmit spatial filter information associated with the uplink TCI or joint TCI. For example, if the reference signal indicated by the transmit spatial filter information associated with the uplink TCI (i.e., the uplink beam information) is still unknown, then the target parameters need to be measured for this reference signal.

[0066] (2) The total time required for updating the downlink TCI or the downlink quasi-co-address related to the joint TCI and its associated processing flow. For example, if the reference signal indicated by the downlink quasi-co-address relationship related to the downlink TCI is still unknown, then the target parameters of the reference signal need to be measured; if the reference signal indicated by the downlink quasi-co-address relationship related to the downlink TCI is still inactive, then the synchronization signal block (SSB) associated with the reference signal corresponding to the TCI needs to be measured and processed first to obtain the relevant synchronization information.

[0067] (3) Update the PL-RS list and the total processing time required for its associated procedures. For example, if the uplink TCI corresponding to the PL-RS is still inactive, the reference signal associated with the PL-RS needs to be measured to obtain the target parameter value and accurate downlink path loss information. It should be noted that if the uplink TCI or joint TCI is in an unknown state, it is also necessary to determine whether the corresponding TCI is active.

[0068] Optionally, in this embodiment of the application, the first TCI state list includes any one of the following: independent TCI, at least one joint TCI. The independent TCI includes at least one uplink TCI and at least one downlink TCI. The uplink TCI is used to indicate uplink beam information transmitted uplink, and the downlink TCI is used to indicate downlink QCL information transmitted downlink. The joint TCI is used to indicate downlink QCL and uplink beam information transmitted uplink.

[0069] Optionally, in this embodiment of the application, the network-side device can issue a TCI status update indication (i.e., target indication information) through MAC CE. The TCI status update indication includes uplink TCI and downlink TCI, or includes updates of combined TCI. The uplink TCI can be one or more uplink TCIs, the downlink TCI can be one or more downlink TCIs, and the combined TCI can be one or more combined TCIs.

[0070] It should be noted that since the joint TCI and the standalone TCI are not configured to the UE together via RRC, the joint TCI and the standalone TCI cannot be activated simultaneously through a single MAC CE.

[0071] Optionally, in this embodiment of the application, the first time slot is determined based on the maximum value of the first duration and the second duration, wherein the first duration is the duration required for the update process of at least one uplink TCI, and the second duration is the duration required for the update process of at least one downlink TCI.

[0072] It is understandable that when the network-side device updates the first TCI status list using MAC CE, the UE can update the relevant parameters of the downlink TCI indication and the relevant parameters of the uplink TCI indication. The UE can determine the effective time of the new first TCI status list based on the later value of the two update times, and the UE can determine the update time of PL-RS based on the status of the uplink TCI.

[0073] Optionally, in this embodiment, the first duration is determined based on the state of at least one uplink TCI, and the second duration is determined based on the state of at least one downlink TCI. The state can be any of the following: known state, unknown state, active state, or inactive state.

[0074] In this embodiment of the application, the UE can determine the state of each TCI (i.e., known state, unknown state, activated state, or inactive state) based on the currently active first TCI state list (which has not yet been updated according to the target indication information) and the measurement results of the reference signal.

[0075] Optionally, in this embodiment of the application, the UE determines whether the TCI is in a known state based on the measurement results of the reference signal and whether the UE has previously performed a measurement report of the relevant reference signal.

[0076] It should be noted that defining the known state of TCI is to prevent situations where, during the configuration and activation of TCI by the network-side equipment, the UE does not strictly execute the TCI list configuration, reference signal configuration, and beam measurement, but instead performs blind configuration based on other information. Since the UE has not performed the relevant measurements, it has not obtained the synchronization or beam information indicated by the TCI state, thus requiring additional time for the corresponding TCI state to take effect.

[0077] Optionally, in this embodiment of the application, the UE determines whether the TCI is in an active state: for a TCI with a known state, it can be determined based on whether the TCI to be activated is in the list of activated TCIs; while for a TCI with an unknown state, it can be determined based on whether the QCL relationship corresponding to the TCI to be activated is related to the SSB.

[0078] Optionally, in the embodiments of this application, if there is an uplink TCI with an unknown state in at least one uplink TCI, the first duration mentioned above includes the duration required for the UE to measure the target parameters of the first reference signal.

[0079] In this embodiment of the application, the first reference signal is a reference signal associated with the uplink TCI in an unknown state.

[0080] It should be noted that the first reference signal associated with TCI mentioned above can be the source reference signal of the QCL relationship or transmit beam information indicated by TCI, or it can be other reference signals that have a QCL relationship with the source reference signal. The existence of a QCL relationship means that the target reference signal of the QCL relationship of the first reference signal is directly the source reference signal of the QCL relationship or transmit beam information indicated by TCI, or that the first reference signal and the source reference signal of the QCL relationship or transmit beam information indicated by TCI are in the same QCL relationship chain.

[0081] It is understood that if at least one of the multiple uplink TCIs is in an unknown state, the first duration needs to include the time required to measure the target parameter for the first reference signal, wherein the measurement time of the first reference signal is determined based on the period of the periodic signal associated with the uplink TCI in the unknown state, or based on the measurement time slot of the aperiodic signal associated with the uplink TCI in the unknown state.

[0082] It should be noted that if more than one uplink TCI is in an unknown state, the time required to measure the target parameter for the first reference signal is determined according to the measurement opportunity of the last reference signal that arrives among all reference signals associated with multiple uplink TCIs in unknown states.

[0083] Optionally, in the embodiments of this application, the above-mentioned target parameter is the Reference Signal Receiving Power (RSRP), such as Layer 1-RSRP (i.e., L1-RSRP).

[0084] Optionally, in embodiments of this application, if there is an unknown state in at least one downlink TCI, the second duration includes the duration required for the UE to measure the target parameters of the second reference signal.

[0085] In this embodiment of the application, the second reference signal is a reference signal associated with the downlink TCI in an unknown state.

[0086] It is understood that if at least one of the multiple downlink TCIs is in an unknown state, the second duration needs to include the time required to measure the target parameter for the second reference signal, wherein the measurement time of the second reference signal is determined based on the period of the periodic signal associated with the downlink TCI in the unknown state, or based on the measurement time slot of the aperiodic signal associated with the downlink TCI in the unknown state.

[0087] It should be noted that if more than one downlink TCI is in an unknown state, the time required to measure the target parameter for the second reference signal is determined according to the measurement opportunity of the last reference signal that arrives among all reference signals associated with multiple unknown downlink TCIs.

[0088] Optionally, in the embodiments of this application, if there is an inactive uplink TCI in at least one uplink TCI, the first duration mentioned above includes the duration required for the UE to measure the SSB associated with the third reference signal.

[0089] In this embodiment of the application, the third reference signal is a reference signal associated with the uplink TCI in an inactive state.

[0090] It is understandable that if at least one of the multiple uplink TCIs is inactive, the first duration must include the time for measuring and processing the SSB associated with the reference signal (i.e., the third reference signal) corresponding to the at least one inactive TCI. It should be noted that if more than one TCI is inactive, the effective time of the first TCI state list is determined according to the maximum period of the associated SSB.

[0091] Optionally, in embodiments of this application, if there is an inactive downlink TCI in at least one downlink TCI, the second duration mentioned above includes the duration required for the UE to measure the SSB associated with the fourth reference signal.

[0092] In this embodiment of the application, the fourth reference signal is a reference signal associated with the downlink TCI in an inactive state.

[0093] It is understandable that if at least one of the multiple downlink TCIs is inactive, the second duration needs to include the time for measuring and processing the SSB associated with the reference signal (i.e., the fourth reference signal) corresponding to the at least one inactive TCI. It should be noted that if more than one TCI is inactive, the effective time of the first TCI state list is determined according to the maximum period of the associated SSB.

[0094] Optionally, in this embodiment of the application, the TCI in the first TCI status list is used to indicate at least one of the first type QCL information, the D type QCL information and the uplink beam information of the UE on each of the N carriers. The first type QCL information includes the A type QCL information, the B type QCL information and the C type QCL information, and N is an integer greater than or equal to 1.

[0095] Optionally, in this embodiment of the application, the first type of QCL information (i.e., ABC type QCL information) is indicated by the TCI in the first TCI state list by indicating the fifth reference signal on each carrier.

[0096] It should be noted that the source reference signal for Class ABC QCL information is configured independently on each carrier, while Class D QCL information and uplink beam information are configured uniquely on a certain carrier within the frequency band and can be shared with all carriers within that frequency band.

[0097] In this embodiment, the UE can perform beam measurement based on the reference signals configured by the network-side equipment and feed back the calculated measurement results of the target parameters (i.e., L1-RSRP). Specifically, the UE can determine the corresponding reference signal configuration based on the reporting configuration containing the target parameters configured by the network-side equipment, and perform beam measurement of the target parameters on these reference signals. In particular, when performing beam measurement, the UE can determine the downlink time-frequency synchronization and uplink / downlink beams used for these measurements and related periodic reporting based on the QCL information of the reference signals.

[0098] It should be noted that time-frequency synchronization can include time-domain synchronization and frequency-domain synchronization, indicated by ABC type QCL relationships. ABC type QCL relationships are a collective term for types A, B, and C QCL relationships. Type A QCL relationships include the average delay and delay spread required for time-domain synchronization, and the Doppler offset and Doppler spread information required for frequency-domain synchronization. Type B QCL relationships only include the Doppler offset and Doppler spread information required for frequency-domain synchronization. Type C QCL relationships only include information regarding average delay and Doppler offset. The UE can determine the time-domain or frequency-domain synchronization information of the target signal or channel based on the source reference signal in each QCL relationship of types A, B, and C.

[0099] Downlink beam information, also known as spatial receive filter information or Class D QCL information, allows the UE to determine the downlink beam information of the target signal or channel based on the source reference signal after the network-side equipment indicates the downlink beam information. Uplink beam information, also known as transmit spatial transmit filter information (Spatial Tx filter) or transmit spatial relation information (TxSpatial Relation), allows the UE to determine the uplink beam information of the target signal or channel based on the source reference signal after the network-side equipment indicates the uplink beam information.

[0100] Optionally, in this embodiment of the application, the first duration or the second duration is determined based on the state of the TCI in the first TCI state list on each of the multiple carriers; the state of the TCI in the first TCI state list on each carrier is determined based on the measurement results of the fifth reference signal on the respective carrier.

[0101] In this embodiment, the UE can determine the effective time of the first TCI state list based on the current state of each TCI in the first TCI state list on each carrier. The UE can determine the state (i.e., known state, unknown state, activated state, or inactive state) of each TCI on each carrier based on the currently active first TCI state list (which has not yet been updated according to the target indication information) and the measurement results of the reference signal.

[0102] In this embodiment, the UE determines whether the TCI is in a known state on each component carrier based on the measurement results of the reference signal on each carrier and whether the UE has previously performed measurement reporting of the relevant reference signal. It should be noted that the reference signal on each carrier is also configured with QCL information; therefore, when determining whether the TCI is in a known state on each carrier, the UE needs to refer to the configuration of the QCL information of the reference signal on each carrier.

[0103] It is understandable that in a carrier aggregation scenario, the UE can determine the known state of each TCI on each carrier and, based on the known state of each TCI on each carrier, determine the effective time of the entire first TCI state list.

[0104] For example, assume that RS1 and RS2 are configured on component carriers (CC)1 and CC2 respectively, serving as the source reference signals for the ABC class QCLs of TCI on CC1 and CC2 respectively. When determining the known relationship between RS1 and RS2, the source reference signals for the ABC class QCLs of RS1 and RS2 are the same (both are RS3). It should be noted that RS3 can be on CC1 or CC2, or on any CC not belonging to CC1 or CC2. Therefore, if RS3 is an RS that the UE has measured and reported via RSRP, and satisfies all the conditions for determining the known state, then TCI can be considered known on both CC1 and CC2.

[0105] Optionally, in this embodiment of the application, if there is a TCI in the first TCI state list whose state is unknown on at least one carrier, the first duration or the second duration includes the duration required for the UE to measure the target parameters of the first reference signal group. The first reference signal group is determined according to the second reference signal group, which is the sixth reference signal indicated by all TCIs in the first TCI state list on all carriers.

[0106] It should be noted that, in order to describe the known state of a TCI on each CC, this application defines a TCI-CC sequence number pair (a, b), or simply a TCI-CC pair. The known state on the TCI-CC sequence number pair (a, b) is the known state of a TCI with sequence number a on a certain CC b.

[0107] Optionally, in this embodiment, if at least one TCI-CC pair among multiple uplink TCIs is in an unknown state, the first duration needs to include the time required to measure the target parameter for the RS. The RS measurement time is determined based on the period of the periodic signal associated with the unknown TCI-CC pair, or based on the measurement time slot of the aperiodic signal associated with the TCI-CC pair. It should be noted that if more than one TCI-CC pair is in an unknown state, the time required to measure the target parameter for the RS is determined according to the measurement opportunity of the last RS to arrive among all RSs associated with the multiple TCI-CC pairs.

[0108] Optionally, in this embodiment, if at least one TCI-CC pair among multiple downlink TCIs is in an unknown state, the second duration needs to include the time required to measure the target parameter for the RS. The RS measurement time is determined based on the period of the periodic signal associated with the TCI-CC pair, or based on the measurement time slot of the aperiodic signal associated with the downlink TCI in the unknown state on the TCI-CC pair. It should be noted that if more than one TCI-CC pair is in an unknown state, the time required to measure the target parameter for the RS is determined according to the last RS measurement opportunity among all RSs associated with the downlink TCIs in the unknown state on the multiple TCI-CC pairs.

[0109] Optionally, in this embodiment, if at least one TCI-CC pair among multiple uplink TCIs is inactive, the first duration needs to include the time for measuring and processing the RS corresponding to that TCI-CC pair and its associated SSB. It should be noted that if more than one TCI-CC pair is inactive, the effective time of the first TCI status list is determined according to the maximum period of the associated SSB.

[0110] Optionally, in this embodiment, if at least one TCI-CC pair among multiple downlink TCIs is inactive, the second duration needs to include the time for measuring and processing the RS corresponding to that TCI-CC pair and its associated SSB. It should be noted that if more than one TCI-CC pair is inactive, the effective time of the first TCI status list is determined according to the maximum period of the associated SSB.

[0111] In this embodiment, the UE can update at least one uplink TCI and at least one downlink TCI in the first TCI status list according to the target indication information, ensuring that the uplink and downlink TCI update time nodes remain consistent during transmission. Furthermore, the UE can determine the effective time of the first TCI status list based on the maximum value of a first duration (i.e., the duration required for updating at least one uplink TCI) and a second duration (i.e., the duration required for updating at least one downlink TCI), aligning the effective times of the uplink and downlink TCIs. This facilitates scheduling of the UE by the network-side equipment and increases the flexibility of the UE in activating the first TCI status list, thereby avoiding performance loss in uplink and downlink data transmission when the network-side equipment schedules the UE.

[0112] Optionally, in this embodiment of the application, the first time slot is determined according to a third duration, which is the duration required for the update process of at least one joint TCI.

[0113] It is understandable that network-side devices use MAC CE to indicate the update of independent TCI. The UE can determine the known state of the TCI based on the source RS corresponding to each TCI state, and determine the update time of the relevant parameters of the downlink TCI and uplink TCI indication respectively.

[0114] Optionally, in this embodiment of the application, for independent TCI, after determining the first duration corresponding to updating the transmit spatial filter information related to the uplink TCI and the second duration corresponding to updating the downlink quasi-co-address related to the downlink TCI, the UE can determine the effective time of independent TCI as the maximum value of the first duration and the second duration.

[0115] Optionally, in this embodiment of the application, for the joint TCI, after determining the first duration corresponding to the transmit spatial filter information related to updating the uplink TCI and the second duration corresponding to the downlink quasi-co-address related to updating the downlink TCI, the UE can uniformly determine the joint TCI based on the known state or active state of the reference signal corresponding to the joint TCI.

[0116] Optionally, in this embodiment, the third duration is determined based on the state of at least one joint TCI. This state can be any of the following: known state, unknown state, active state, or inactive state.

[0117] Optionally, in embodiments of this application, if there is an unknown state in at least one joint TCI, the third duration includes the duration required for the UE to measure the target parameters of the seventh reference signal.

[0118] In this embodiment of the application, the seventh reference signal is a reference signal associated with the joint TCI in an unknown state.

[0119] It is understandable that if at least one of the multiple joint TCIs is in an unknown state, the third duration needs to include the time required to measure the target parameter for the RS. The measurement time for the RS is determined based on the periodic signal associated with the joint TCI in the unknown state, or based on the measurement time slot of the aperiodic signal associated with the joint TCI in the unknown state. It should be noted that if more than one joint TCI is in an unknown state, the time required to measure the target parameter for the RS is determined according to the measurement opportunity of the last RS to arrive among all RSs associated with the multiple unknown joint TCIs.

[0120] Optionally, in embodiments of this application, if there is an inactive joint TCI in at least one joint TCI, the third duration includes the duration required for the UE to measure the SSB associated with the eighth reference signal.

[0121] In this embodiment of the application, the eighth reference signal is a reference signal associated with the joint TCI in an inactive state.

[0122] It is understandable that if at least one of the multiple joint TCIs is inactive, the third duration must include the time for measuring and processing the RS corresponding to the at least one inactive TCI and its associated SSB. It should be noted that if more than one TCI is inactive, the effective time of the joint TCI is determined according to the maximum period of the associated SSB.

[0123] Optionally, in this embodiment of the application, the third duration is determined based on the state of the TCI in the first TCI state list on each of the multiple carriers; the state of the TCI in the first TCI state list on each carrier is determined based on the measurement results of the eighth reference signal on each carrier.

[0124] Optionally, in this embodiment of the application, if there is a TCI in the first TCI state list whose state is unknown on at least one carrier, the third duration includes the duration required for the UE to measure the target parameters of the first reference signal group. The first reference signal group is determined according to the second reference signal group, which is the ninth reference signal indicated by all TCIs in the first TCI state list on all carriers.

[0125] Optionally, in this embodiment, if at least one TCI-CC pair among multiple joint TCIs is in an unknown state, the third duration needs to include the time required to measure the target parameter for the RS, wherein the measurement time of the RS is determined based on the period of the periodic signal associated with the unknown TCI-CC pair, or based on the measurement time slot of the aperiodic signal associated with the TCI-CC pair. It should be noted that if more than one TCI-CC pair is in an unknown state, the time required to measure the target parameter for the RS is determined according to the measurement opportunity of the last RS to arrive among all RSs associated with the multiple TCI-CC pairs.

[0126] Optionally, in this embodiment, if at least one TCI-CC pair among multiple joint TCIs is inactive, the third duration needs to include the time for measuring and processing the RS corresponding to that TCI-CC pair and its associated SSB. It should be noted that if more than one TCI-CC pair is inactive, the effective time of the first TCI status list is determined according to the maximum period of the associated SSB.

[0127] In this embodiment of the application, in a carrier aggregation scenario, the UE can determine the effective time of the first TCI status list based on the status of the TCI (independent TCI or joint TCI) on each of the multiple carriers. This facilitates the scheduling of the UE by the network-side device and also increases the flexibility of the UE in applying the first TCI status list, thereby avoiding the loss of uplink and downlink data transmission performance when the network-side device schedules the UE.

[0128] Optionally, in this embodiment of the application, before step 201 above, the Transmission Configuration Indicator (TCI) status update method provided in this embodiment of the application further includes the following step 401.

[0129] Step 401: The UE determines the maximum number of reference signals in the first reference signal group based on the first UE capability information.

[0130] In one embodiment of this application, the UE indicates the maximum number of beam measurement reference signals that can be configured simultaneously by reporting first UE capability information. The network-side device can determine the maximum number of TCIs in unknown states that can be activated based on the UE capability information, so as to avoid the number of unknown state TCIs activated by the network-side device exceeding the UE's capability, which could lead to interoperability problems or performance loss between the UE and the network-side device.

[0131] In another scenario, in multi-carrier scenarios, due to the large number of TCI-CC comparisons, the probability of encountering TCI-CC pairs with unknown states is also higher. The UE can indicate the maximum number of beam measurement reference signals that can be configured simultaneously by reporting its first UE capability information. The network-side equipment can determine the maximum number of TCI-CC pairs with unknown states that can be activated based on the UE's capability information, thus avoiding interoperability issues or performance degradation between the UE and the network-side equipment caused by the network-side equipment activating more TCI-CC pairs with unknown states than the UE's capabilities.

[0132] Optionally, in this embodiment of the application, the above-mentioned target indication information is also used for the UE to update the PL-RS list, and the updated PL-RS list takes effect after the second time slot.

[0133] Optionally, in this embodiment of the application, after step 201 above, the Transmission Configuration Indicator (TCI) status update method provided in this embodiment of the application further includes the following step 501.

[0134] Step 501: The UE updates the PL-RS list according to the target indication information.

[0135] In this embodiment of the application, the updated PL-RS list takes effect after the second time slot.

[0136] Optionally, in this embodiment of the application, the UE may determine the effective time of PL-RS based on the state of the uplink TCI and the state of the downlink TCI; or, the UE may determine the effective time of PL-RS based on the state of the combined TCI.

[0137] Optionally, in this embodiment, the UE can update the PL-RS list according to the explicit indication method of the target indication information, that is, the target indication information is also used to instruct the UE to update the PL-RS list. Alternatively, the UE can update the PL-RS list according to the implicit indication method of the target indication information, that is, the TCIs (e.g., independent TCIs or joint TCIs) in the first TCI status list are associated with the PL-RS, and the update of the first TCI status list can trigger the change of the PL-RS. That is, the network-side device enables the UE to update the PL-RS list when updating the first TCI status list by indicating the update of the first TCI status list.

[0138] Optionally, in this embodiment, if at least one of the multiple uplink TCIs is inactive, the time required to measure and process the SSB needs to be included when determining the total duration of the processing flow associated with updating the PL-RS list. It should be noted that if more than one TCI is inactive, the available time of the PL-RS list, i.e., the second time slot, is determined according to the maximum period of the associated SSB.

[0139] It should be noted that the second time slot may differ from the first time slot.

[0140] Optionally, in this embodiment, if at least one of the multiple joint TCIs is inactive, the total time required to update the PL-RS list and its associated processing flow must include the time for measuring and processing the SSB associated with the RS corresponding to the at least one inactive TCI. It should be noted that if more than one TCI is inactive, the available time of the PL-RS list is determined according to the maximum cycle of the associated SSB.

[0141] Optionally, in this embodiment, if at least one TCI-CC pair among multiple uplink TCIs is inactive, the time required to measure and process the SSB needs to be included when determining the total time required for updating the PL-RS list and its associated processing flow. It should be noted that if more than one TCI-CC pair is inactive, the available time of the PL-RS list is determined according to the maximum period of the associated SSB.

[0142] It should be noted that this application does not restrict the execution order of steps 501 and 202. Step 202 can be executed first, followed by step 501, or steps 202 and 501 can be executed simultaneously.

[0143] This application provides a TCI state update method. A UE can update a first TCI state list based on target indication information. The updated first TCI state list takes effect after a first time slot, which is determined based on the duration required for the update process of the first TCI state list. In this scheme, after updating the first TCI state list, the UE can determine the effective time of the updated first TCI state list based on the duration required for the update process. That is, the effective time of the TCI can be flexibly determined based on the duration required for the update process of the first TCI state list, facilitating network-side device scheduling of the UE and increasing the flexibility of the UE in determining the effectiveness of the first TCI state list, thereby avoiding the loss of uplink and downlink data transmission performance when the network-side device schedules the UE.

[0144] Optionally, in this embodiment of the application, after step 202 above, the Transmission Configuration Indicator (TCI) status update method provided in this embodiment of the application further includes the following step 601.

[0145] Step 601: If the updated first TCI status list has taken effect, the UE uses the updated first TCI status list to transmit target data.

[0146] In this embodiment of the application, the target data includes at least one of the following: uplink and downlink scheduling information, uplink data, downlink data, and feedback information.

[0147] In one embodiment of this application, the UE can, based on the time required for the update process of the determined first TCI state list, use the updated first TCI state list in the first time slot to perform DL / UL scheduling monitoring, uplink and downlink data transmission, and / or feedback of related feedback information (e.g., ACK / NACK).

[0148] In another scenario, the UE may, based on the time required for updating the determined first TCI state list, use the updated first TCI state list in the first time slot to perform DL / UL scheduling monitoring, uplink / downlink data transmission, and / or feedback of relevant feedback information on one or more CCs.

[0149] It should be noted that after completing MAC CE decoding and obtaining the corresponding first TCI status list, before the first time slot, the UE can also use one or more TCIs in the updated first TCI status list to perform DL / UL scheduling monitoring, uplink and downlink data transmission, and / or related ACK / NACK feedback.

[0150] In this embodiment of the application, the UE can use an updated first TCI state list to transmit data in the first time slot, which ensures the transmission performance of uplink and downlink data when the network-side device schedules the UE.

[0151] The following describes the entire process of updating the first TCI status list through specific implementation methods (i.e., implementation method one and implementation method two).

[0152] Implementation Method 1: This implementation method is a solution for single-carrier scenarios.

[0153] like Figure 5 As shown, the TCI state update method provided in this application embodiment specifically includes the following steps 21 to 26:

[0154] Step 21: The network-side device configures the second TCI status list and reference signal for the UE.

[0155] The network-side equipment configures a second TCI status list (RRC list) via RRC signaling. Each TCI status indicates the source reference signal information for one or two QCL relationships / QCL information. This TCI status list includes uplink TCI, downlink TCI, or combined TCI. It is important to note that both uplink and downlink TCI are independent TCIs. The combined TCI and independent TCI are not configured to the UE together via RRC.

[0156] The network-side device configures a set of reference signals and further configures the QCL relationship of these reference signals based on the list of configured TCI states;

[0157] Among various reference signal configurations, there is a reference signal called PL-RS used to determine downlink path loss in order to calculate uplink transmit power. This type of reference signal can establish a connection with the uplink TCI or joint TCI. That is, if a certain uplink TCI or joint TCI is active, the UE also needs to maintain this PL-RS. When the list of active uplink TCIs changes, the corresponding path loss reference signal also changes accordingly.

[0158] Step 22: The UE performs beam measurement.

[0159] The UE performs beam measurements based on the reference signals configured by the network-side equipment and calculates the L1-RSRP. Specifically, the UE determines the corresponding reference signal configuration based on the reporting configuration including L1-RSRP configured by the network-side equipment, and performs L1-RSRP beam measurements on these reference signals. In particular, when performing beam measurements, the UE needs to determine the downlink time-frequency synchronization and uplink / downlink beams used for these measurements and related periodic reporting based on the QCL relationship of the reference signals.

[0160] Step 23: The UE receives MAC CE signaling to obtain an update indication of the first TCI status list.

[0161] The network-side device sends an update indication for the first TCI status list (i.e., the target indication information described in the above embodiments) via MAC CE signaling. This update indication includes update indications for uplink TCI and downlink TCI, or an update indication for a combined TCI. The uplink TCI can be one or more uplink TCIs, the downlink TCI can be one or more downlink TCIs, and the combined TCI can be one or more combined TCIs. It should be noted that because the combined TCI and the independent TCI are not configured to the UE together via RRC, the combined TCI and the independent TCI cannot be activated simultaneously through a single MAC CE.

[0162] Specifically, based on the relationship established between the uplink TCI or combined TCI and the PL-RS as described in step 21 above, the update of the uplink TCI or combined TCI status list can trigger a change in the PL-RS. That is, the network-side device can implicitly indicate to the UE that the PL-RS list maintained needs to be updated by changing the TCI status list.

[0163] After the UE receives this MAC CE signaling, it can first demodulate the corresponding PDSCH, and after the physical layer sends back ACK or NACK according to the CRC check, it can extract the MAC CE from the data uploaded from the physical layer to the MAC layer, and decode the TCI status information list indicated by this MAC CE.

[0164] It should be noted that before the UE completes MAC CE decoding, the UE cannot obtain any information from the first TCI status list. Therefore, the UE must perform DL / UL scheduling monitoring, uplink and downlink data transmission, and related ACK / NACK feedback based on the original first TCI status list.

[0165] Step 24: The UE determines the current state of each TCI in the first TCI state list to be activated (i.e., to be activated).

[0166] In this step, the UE needs to determine the state of each TCI (1. Known state (known or unknown); 2. Activated state (activated or inactive)) based on the currently active first TCI state list (note that it has not yet been updated according to the information indicated by MAC CE) and the measurement results of the reference signal described in step 22 above.

[0167] The UE determines whether the TCI is in a known state based on the measurement results of the reference signal and whether the UE has previously performed measurement reporting of the relevant reference signal. Defining a known TCI state addresses situations where network-side devices, during TCI configuration and activation, do not strictly adhere to steps 21 and 22 above, but instead perform blind configuration based on other information. Since the UE has not performed the relevant measurements, it has not obtained the synchronization or beam information indicated by this TCI state; therefore, additional time is required for the corresponding TCI state to take effect.

[0168] The UE determines whether a TCI is active. For a known TCI, it determines whether the TCI to be activated is in the list of activated TCIs. For an unknown TCI, it determines whether the QCL relationship corresponding to the TCI to be activated is related to the SSB.

[0169] Step 25: The UE determines the length of the TCI update processing time (the time required for the update process of the first TCI status list).

[0170] The UE can further determine based on the state of each TCI:

[0171] 1. Update the downlink TCI or the associated downlink quasi-co-addressing related to the joint TCI, and the total time required for its associated processing flow. For example, if the RS indicated by the downlink quasi-co-addressing relationship related to the downlink TCI is still in an unknown state, then RSRP measurement needs to be performed on the RS; if the RS indicated by the downlink quasi-co-addressing relationship related to the downlink TCI is still in an inactive state, then the RS corresponding to the TCI and its associated SSB need to be measured and processed first to obtain relevant synchronization information.

[0172] 2. Update the transmit spatial filter information associated with the uplink TCI or joint TCI, and the total time required for the associated processing flow. For example, if the RS indicated by the downlink quasi-co-address relationship associated with the downlink TCI is still unknown, then an L1-RSRP measurement needs to be performed for this RS.

[0173] 3. Update the PL-RS maintenance list (i.e., the PL-RS list), including the total time required for its associated processing. For example, if the uplink TCI corresponding to the PL-RS is still inactive, the reference signal associated with the PL-RS needs to be measured to obtain the RSRP value and accurate downlink path loss information. Note that if the uplink TCI or joint TCI is in an unknown state, it is also necessary to determine whether the corresponding TCI is active, and the determination criteria are based on the description in step 24.

[0174] Furthermore, for independent TCIs, after determining the first time corresponding to the downlink quasi-co-address related to updating the downlink TCI and the second time corresponding to the transmit spatial filter information related to updating the uplink TCI, the effective time of the independent TCI list is further determined to be the maximum value of the two.

[0175] like Figure 6 The diagram illustrates the TCI status update process. It should be noted that... Figure 6 In the process of updating the quasi-co-location relationship of downlink TCI or joint TCI states, the measurement and processing of L1-RSRP and SSB, and their order of precedence, are discussed. Figure 6 The embodiments described herein are merely illustrative and are not intended to limit the scope of the application.

[0176] If at least one of the multiple downlink TCIs is in an unknown state, the time required to perform RSRP measurement for RS needs to be included, wherein the measurement time of RS is determined based on the period of the periodic signal associated with the unknown downlink TCI, or based on the measurement time slot of the aperiodic signal associated with the unknown downlink TCI; if more than one downlink TCI is in an unknown state, the time required to perform RSRP measurement for RS is determined according to the last RS measurement opportunity among all RSs associated with the multiple unknown downlink TCIs.

[0177] If at least one of the multiple uplink TCIs is in an unknown state, the time required to perform RSRP measurement for RS needs to be included, wherein the measurement time of RS is determined based on the period of the periodic signal associated with the unknown uplink TCI, or based on the measurement time slot of the aperiodic signal associated with the unknown uplink TCI; if more than one uplink TCI is in an unknown state, the time required to perform RSRP measurement for RS is determined according to the last RS measurement opportunity among all RSs associated with the multiple unknown uplink TCIs.

[0178] If at least one of the multiple downlink TCIs is inactive, the time required to measure and process the RS corresponding to that TCI and its associated SSB must be included; if more than one TCI is inactive, the effective time of the update list should be determined according to the maximum period of the associated SSB.

[0179] If at least one of the multiple uplink TCIs is inactive, the time required to measure and process the SSB must be included when determining the maintenance list of the PL-RS and its associated processing flow; if more than one TCI is inactive, the available time of the PL-RS list is determined according to the maximum cycle of the associated SSB.

[0180] It should be noted that the second time slot may differ from the first time slot.

[0181] Furthermore, for the joint TCI, when determining the downlink quasi-co-address correspondence and updating the uplink transmit spatial filter information, it is uniformly determined based on the known state and activation state of the reference signal corresponding to the joint TCI.

[0182] If at least one of the multiple joint TCIs is in an unknown state, the time required to perform RSRP measurement for RS needs to be included, wherein the measurement time of RS is determined based on the periodic signal associated with the unknown joint TCI, or based on the measurement time slot of the aperiodic signal associated with the unknown joint TCI; if more than one joint TCI is in an unknown state, the time required to perform RSRP measurement for RS is determined according to the last RS measurement opportunity among all RSs associated with the multiple unknown joint TCIs.

[0183] If at least one of the multiple joint TCIs is inactive, the activation time of the joint TCI, as well as the total time required for determining the maintenance list of the PL-RS and its associated processing flow, must include the time for measuring and processing the RS corresponding to that TCI and its associated SSB. If more than one TCI is inactive, the effective time of the joint TCI list and the availability time of the PL-RS list are determined according to the maximum cycle of the associated SSB.

[0184] The UE indicates the number of beam measurement reference signals that can be configured simultaneously by reporting its capabilities. The network-side device determines the maximum number of unknown TCIs that can be activated based on the UE's capabilities. If the number of unknown TCIs activated by the network-side device exceeds the UE's capabilities, the corresponding UE behavior is not limited in this embodiment.

[0185] Step 26: Based on the determined processing time length (i.e., the time required for updating the first TCI status list), after the first time slot, the UE uses the updated first TCI status list to listen for DL / UL scheduling, transmit uplink and downlink data, and provide relevant ACK / NACK feedback.

[0186] It should be noted that after completing MAC CE decoding and obtaining the corresponding first TCI status list, before the first time slot, the UE can also use one or more TCIs in the updated first TCI status list to listen for DL / UL scheduling, transmit uplink and downlink data, and provide related ACK / NACK feedback. This application embodiment does not impose any restrictions.

[0187] Implementation Method 2: This implementation method is a solution for multi-carrier scenarios, i.e., carrier aggregation scenarios.

[0188] like Figure 7 As shown, the TCI state update method provided in this application embodiment specifically includes the following steps 31 to 36:

[0189] Step 31: The network-side device configures the second TCI status list and reference signal for the UE.

[0190] Network-side equipment configures a second TCI status list (RRC list) via RRC signaling. Each TCI status indicates source reference signal information for one or two QCL relationships. This TCI status list includes uplink TCI and downlink TCI, or joint TCI. For ABC type QCL relationships, the source reference signal is configured on each CC; for D type QCL relationships or transmitted beam information, the source reference signal is configured on only one component carrier, but it applies to all CCs. This TCI status configuration is mainly for carrier aggregation within the same frequency band, i.e., in-band carrier aggregation scenarios. In carrier aggregation scenarios, joint TCI and independent TCI are not configured to the UE together via RRC.

[0191] The network-side equipment configures a set of reference signals, including the PL-RS. Based on the configured list of TCI states, the network-side equipment further configures the QCL relationships of these reference signals. The PL-RS can establish a connection with the uplink TCI or joint TCI; that is, if a certain uplink TCI or joint TCI is active, the UE also needs to maintain this PL-RS. The source reference signal on a certain component carrier corresponding to the uplink beam information indicated in the uplink TCI or joint TCI can establish association relationships with the PL-RS on different CCs respectively.

[0192] Step 32: The UE performs beam measurement.

[0193] The UE performs beam measurements based on the reference signals configured by the network-side equipment and calculates the L1-RSRP. Specifically, the UE determines the corresponding reference signal configuration based on the reporting configuration including L1-RSRP configured by the network-side equipment, and performs L1-RSRP beam measurements on these reference signals. In particular, when performing beam measurements, the UE needs to determine the downlink time-frequency synchronization and uplink / downlink beams used for these measurements and related periodic reporting based on the QCL relationship of the reference signals.

[0194] As described in step 31 above, the source reference signal for the ABC class QCL relationship is configured independently on each CC, while the D class QCL relationship and uplink beam information are uniquely configured on a certain carrier within the frequency band and can be shared with all carriers within this frequency band.

[0195] Step 33: The UE receives MAC CE signaling to obtain an update indication of the first TCI status list.

[0196] It should be noted that the explanation of step 33 above can be found in the description of step 23 in the above embodiments, and will not be repeated here.

[0197] Step 34: The UE determines the current state of each TCI on each CC in the list of the first TCI states to be activated.

[0198] In this step, the UE needs to determine the state of each TCI on each CC (1. known state (known or unknown); 2. active state (activated or inactive)) based on the currently active first TCI state list (note that it has not yet been updated according to the information indicated by MAC CE) and the measurement results of the reference signal described in step 32 above.

[0199] The UE determines whether the TCI is in a known state on each CC based on the measurement results of the reference signal on each CC and whether the UE has previously performed measurement reporting of the relevant reference signal. It should be noted that, as described in step 32 above, the reference signal on each CC is also configured with a QCL relationship. Therefore, when determining whether the TCI is in a known state on each CC, the UE needs to refer to the QCL relationship configuration of the reference signal on each CC.

[0200] For example, if reference signals RS1 and RS2 are configured on CC1 and CC2 respectively, serving as the source reference signals for the TCI's ABC class QCL on CC1 and CC2 respectively, and when determining the known relationship between RS1 and RS2, it is found that their ABC class QCL source reference signals are the same, both being RS3. Note that RS3 can be on CC1, CC2, or any in-band component carrier not belonging to CC1 or CC2. Therefore, if RS3 has been measured by the UE and reported via RSRP, satisfying all the conditions for determining the known state, then the TCI can be considered known on both CC1 and CC2.

[0201] Step 35: The UE determines the length of the TCI update processing time.

[0202] The UE can further determine based on the state of each TCI:

[0203] 1. The total time required for updating the downlink TCI or related downlink quasi-co-address and its associated processing flow.

[0204] 2. Update the transmit spatial filter information related to the uplink TCI or joint TCI, and the total time required for the associated processing flow.

[0205] 3. Update the PL-RS maintenance list and the total time required for its associated processing flows.

[0206] Furthermore, for independent TCIs, after determining the time corresponding to the downlink quasi-co-address for updating the downlink TCI and the time corresponding to the transmit spatial filter information for updating the uplink TCI, the effective time of the independent TCI list is further determined to be the maximum of the two.

[0207] To describe the known state of a TCI at each CC, we define a TCI-CC pair (a, b), or simply a TCI-CC pair. The known state at the TCI-CC pair (a, b) is the known state of a TCI with index a at a CC b.

[0208] If at least one TCI-CC pair among multiple downlink TCIs is in an unknown state, the time required for RSRP measurement for RS needs to be included, wherein the measurement time of RS is determined based on the periodic signal associated with the TCI-CC pair, or based on the measurement time slot of the aperiodic signal associated with the unknown downlink TCI on the TCI-CC pair; if more than one TCI-CC pair is in an unknown state, the time required for RSRP measurement for RS is determined according to the last RS measurement opportunity among all RSs associated with the unknown downlink TCIs on the multiple TCI-CC pairs.

[0209] If at least one TCI-CC pair among multiple uplink TCIs is in an unknown state, the time required for RSRP measurement for RS needs to be included, wherein the measurement time of RS is determined based on the period of the periodic signal associated with the unknown TCI-CC pair, or based on the measurement time slot of the aperiodic signal associated with the TCI-CC pair; if more than one TCI-CC pair is in an unknown state, the time required for RSRP measurement for RS is determined according to the last RS measurement opportunity among all RSs associated with multiple TCI-CC pairs.

[0210] If at least one TCI-CC pair among multiple downlink TCIs is inactive, the time required to measure and process the RS corresponding to that TCI-CC pair and its associated SSB must be included; if more than one TCI-CC pair is inactive, the effective time of the update list should be determined according to the maximum period of the associated SSB.

[0211] If at least one TCI-CC pair among multiple uplink TCIs is inactive, the time required to measure and process the SSB must be included when determining the maintenance list of the PL-RS and the total time required for its associated processing flow; if more than one TCI-CC pair is inactive, the available time of the PL-RS list is determined according to the maximum cycle of the associated SSB.

[0212] In multi-carrier scenarios, due to the large number of TCI-CC comparisons, the probability of encountering unknown TCI-CC pairs is also high. The UE indicates the number of beam measurement reference signals that can be configured simultaneously by reporting its capabilities. The network-side device determines the maximum number of unknown TCI-CC pairs that can be activated based on the UE's capabilities. If the number of unknown TCI-CC pairs activated by the network-side device exceeds the UE's capabilities, the corresponding UE behavior is not limited in this embodiment of the application.

[0213] Step 36: Based on the determined processing time length, the UE uses the updated first TCI state list in the first time slot to listen for DL / UL scheduling, transmit uplink and downlink data, and provide relevant ACK / NACK feedback on one or more CCs.

[0214] It should be noted that the TCI state update method provided in this application embodiment can also be executed by a TCI state update device, or by a control module in the TCI state update device for executing the TCI state update method.

[0215] Figure 8 A schematic diagram of a possible structure of the TCI state update device involved in an embodiment of this application is shown. For example... Figure 8 As shown, the TCI status update device 40 may include an acquisition module 41 and an update module 42.

[0216] The acquisition module 41 is used to acquire target indication information. The update module 42 is used to update the first TCI status list according to the target indication information acquired by the acquisition module 41. The updated first TCI status list takes effect after the first time slot, which is determined according to the duration required for the update process of the first TCI status list.

[0217] In one possible implementation, the first TCI state list includes any one of the following: an independent TCI and at least one joint TCI; wherein the independent TCI includes at least one uplink TCI and at least one downlink TCI, the uplink TCI being used to indicate uplink beam information for uplink transmission, the downlink TCI being used to indicate downlink QCL information for downlink transmission; and the joint TCI being used to indicate downlink QCL for downlink transmission and uplink beam information for uplink transmission.

[0218] In one possible implementation, the first time slot is determined based on the maximum of a first duration and a second duration, wherein the first duration is the duration required for an update process of at least one uplink TCI, and the second duration is the duration required for an update process of at least one downlink TCI.

[0219] In one possible implementation, the first duration is determined based on the state of at least one uplink TCI, and the second duration is determined based on the state of at least one downlink TCI; wherein the state is any one of the following: known state, unknown state, active state, and inactive state.

[0220] In one possible implementation, if an uplink TCI with an unknown state exists in at least one uplink TCI, the first duration includes the duration required for the UE to measure the target parameter of the first reference signal; if a downlink TCI with an unknown state exists in at least one downlink TCI, the second duration includes the duration required for the UE to measure the target parameter of the second reference signal; wherein the first reference signal is a reference signal associated with the uplink TCI in an unknown state, and the second reference signal is a reference signal associated with the downlink TCI in an unknown state.

[0221] In one possible implementation, if an inactive uplink TCI exists in at least one uplink TCI, the first duration includes the duration required for the UE to measure the SSB associated with the third reference signal; or, if an inactive downlink TCI exists in at least one downlink TCI, the second duration includes the duration required for the UE to measure the SSB associated with the fourth reference signal; wherein the third reference signal is a reference signal associated with the inactive uplink TCI, and the fourth reference signal is a reference signal associated with the inactive downlink TCI.

[0222] In one possible implementation, the first duration or the second duration is determined based on the state of the TCI in the first TCI state list on each of the multiple carriers; the state of the TCI in the first TCI state list on each carrier is determined based on the measurement results of the fifth reference signal on the respective carrier.

[0223] In one possible implementation, if there is a TCI in the first TCI state list whose state is unknown on at least one carrier, the first duration or the second duration includes the duration required for the UE to measure the target parameters of the first reference signal group, which is determined according to the second reference signal group, which is the sixth reference signal indicated by all TCIs in the first TCI state list on all carriers.

[0224] In one possible implementation, the first time slot is determined based on a third duration, which is the duration required for the update process of at least one joint TCI.

[0225] In one possible implementation, the aforementioned third duration is determined based on the state of at least one joint TCI, which is any of the following: known state, unknown state, active state, and inactive state.

[0226] In one possible implementation, if at least one joint TCI has an unknown state, the third duration includes the duration required for the UE to measure the target parameter of the seventh reference signal; if at least one joint TCI has an inactive state, the third duration includes the duration required for the UE to measure the SSB associated with the eighth reference signal; wherein the seventh reference signal is a reference signal associated with the joint TCI in an unknown state, and the eighth reference signal is a reference signal associated with the joint TCI in an inactive state.

[0227] In one possible implementation, the aforementioned third duration is determined based on the state of the TCI in the first TCI state list on each of the multiple carriers; the state of the TCI in the first TCI state list on each carrier is determined based on the measurement results of the eighth reference signal on the respective carrier.

[0228] In one possible implementation, if there is a TCI in the first TCI state list whose state is unknown on at least one carrier, the third duration includes the duration required for the UE to measure the target parameters of the first reference signal group, which is determined according to the second reference signal group, which is the ninth reference signal indicated by all TCIs in the first TCI state list on all carriers.

[0229] In one possible implementation, the TCI state update apparatus provided in this application embodiment further includes a determination module. The determination module is configured to determine, based on the first UE capability information, the maximum value of the number of reference signals in the first reference signal group before the acquisition module 41 acquires the target indication information.

[0230] In one possible implementation, the TCI in the first TCI status list is used to indicate at least one of the following for the UE: first type QCL information on each of the N carriers, type D QCL information on the N carriers, and uplink beam information. The first type QCL information includes type A QCL information, type B QCL information, and type C QCL information, and N is an integer greater than or equal to 1.

[0231] In one possible implementation, the update module 42 is further configured to update the PL-RS list according to the target indication information after the acquisition module 41 acquires the target indication information, wherein the updated PL-RS list takes effect after the second time slot.

[0232] In one possible implementation, the acquisition module 41 is specifically used to receive MACCE signaling sent by the network-side device, which includes target indication information.

[0233] In one possible implementation, the TCI state update apparatus provided in this application embodiment further includes a receiving module. The receiving module is configured to receive target configuration information sent by a network-side device before the acquisition module 41 acquires target indication information. This target configuration information is used to configure a second TCI state list and a reference signal set for the UE. The TCIs in the second TCI state list are used to indicate source reference signal information for at least one QCL.

[0234] In one possible implementation, the TCI status update apparatus provided in this application embodiment further includes a transmission module. The transmission module is configured to transmit target data using the updated first TCI status list after the update module 42 updates the first TCI status list according to the target indication information, provided that the updated first TCI status list has taken effect. The target data includes at least one of the following: uplink / downlink scheduling information, uplink data, downlink data, and feedback information.

[0235] This application provides a TCI status update device. After updating the first TCI status list, the TCI status update device can determine the effective time of the updated first TCI status list based on the time required for the update process of the first TCI status list. That is, the effective time of TCI can be flexibly determined based on the time required for the update process of the first TCI status list, which facilitates the scheduling of UE by the network-side equipment and increases the flexibility of the UE to take effect on the first TCI status list, thereby avoiding the loss of uplink and downlink data transmission performance when the network-side equipment schedules the UE.

[0236] The TCI state update device in this application embodiment can be a UE, such as a UE with an operating system, or a component in the UE, such as an integrated circuit or chip. The UE can be a terminal or other devices besides a terminal. For example, the UE can be, but is not limited to, the type of UE11 listed above. Other devices can be servers, network attached storage (NAS), etc., and this application embodiment does not specifically limit the types.

[0237] The TCI state update device provided in this application embodiment can implement the various processes implemented by the UE in the above method embodiment and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0238] Figure 9 A schematic diagram of a possible structure of the TCI state update device involved in an embodiment of this application is shown. For example... Figure 9 As shown, the TCI status update device 50 may include a sending module 51.

[0239] The sending module 51 is used to send target indication information to the UE. The target indication information is used by the UE to update the first TCI status list. The updated first TCI status list takes effect after the first time slot, which is determined according to the duration required for the update process of the first TCI status list.

[0240] In one possible implementation, the aforementioned target indication information is also used by the UE to update the PL-RS list, wherein the updated PL-RS list takes effect after the second time slot.

[0241] In one possible implementation, the aforementioned sending module 51 is specifically used to send MAC CE signaling to the UE, the MAC CE signaling including target indication information.

[0242] In one possible implementation, the sending module 51 is further configured to send target configuration information to the UE before sending target indication information to the UE. The target configuration information is used to configure a second TCI state list and a reference signal set for the UE. The TCI in the second TCI state list is used to indicate the source reference signal information of at least one QCL.

[0243] This application provides a TCI status update device. After updating the first TCI status list, the TCI status update device can determine the effective time of the updated first TCI status list based on the time required for the update process of the first TCI status list. That is, the effective time of TCI can be flexibly determined based on the time required for the update process of the first TCI status list, which facilitates the scheduling of UE by the network-side equipment and increases the flexibility of the UE to take effect on the first TCI status list, thereby avoiding the loss of uplink and downlink data transmission performance when the network-side equipment schedules the UE.

[0244] The TCI state update device provided in this application embodiment can implement the various processes implemented by the network-side device in the above method embodiment and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0245] Optionally, such as Figure 10 As shown in the illustration, this application also provides a communication device 5000, including a processor 5001 and a memory 5002. The memory 5002 stores a program or instructions that can run on the processor 5001. For example, when the communication device 5000 is a UE, the program or instructions executed by the processor 5001 implement the various steps of the UE-side method embodiment described above, and achieve the same technical effect. When the communication device 5000 is a network-side device, the program or instructions executed by the processor 5001 implement the various steps of the network-side device method embodiment described above, and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0246] This application embodiment also provides a UE, including a processor and a communication interface. The processor is used by the UE to acquire target indication information and update a first TCI state list according to the target indication information. The updated first TCI state list takes effect after a first time slot, which is determined based on the duration required for the update process of the first TCI state list. This UE embodiment corresponds to the above-described UE-side method embodiment. All implementation processes and methods of the above method embodiments can be applied to this UE embodiment and achieve the same technical effect. Specifically, Figure 11 A schematic diagram of the hardware structure of a UE to implement an embodiment of this application.

[0247] The UE700 includes, but is not limited to, at least some of the following components: radio frequency unit 701, network module 702, audio output unit 703, input unit 704, sensor 705, display unit 706, user input unit 707, interface unit 708, memory 709, and processor 710.

[0248] Those skilled in the art will understand that the UE700 may also include a power supply (such as a battery) for supplying power to various components. The power supply can be logically connected to the processor 710 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 11 The UE structure shown in the figure does not constitute a limitation on the UE. The UE may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0249] It should be understood that, in this embodiment, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042. The GPU 7041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 706 may include a display panel 7061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0250] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 701 can transmit it to the processor 710 for processing; in addition, the radio frequency unit 701 can send uplink data to the network-side device. Typically, the radio frequency unit 701 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low-noise amplifier, duplexer, etc.

[0251] The memory 709 can be used to store software programs or instructions, as well as various data. The memory 709 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 709 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 709 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0252] Processor 710 may include one or more processing units; optionally, processor 710 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 710.

[0253] The processor 710 is used by the UE to obtain target indication information and update the first TCI status list according to the target indication information. The updated first TCI status list takes effect after the first time slot, which is determined according to the time required for the update process of the first TCI status list.

[0254] This application provides a UE that can update a first TCI status list based on target indication information. The updated first TCI status list takes effect after a first time slot, which is determined based on the duration required for the update process of the first TCI status list. In this solution, after updating the first TCI status list, the UE can determine the effective time of the updated first TCI status list based on the duration required for the update process. That is, the effective time of the TCI can be flexibly determined based on the duration required for the update process of the first TCI status list, which facilitates the scheduling of the UE by the network-side equipment and increases the flexibility of the UE in determining the effectiveness of the TCI status list, thereby avoiding the loss of uplink and downlink data transmission performance when the network-side equipment schedules the UE.

[0255] The UE provided in this application embodiment can implement the various processes implemented by the UE in the above method embodiment and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0256] This application also provides a network-side device, including a processor and a communication interface. The communication interface is used to send target indication information to a UE. This target indication information is used by the UE to update a first TCI state list. The updated first TCI state list takes effect after a first time slot, which is determined based on the duration required for the update process of the first TCI state list. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above method embodiments can be applied to this network-side device embodiment and achieve the same technical effects.

[0257] Specifically, embodiments of this application also provide a network-side device. For example... Figure 12 As shown, the network-side device 600 includes: an antenna 61, a radio frequency (RF) device 62, a baseband device 63, a processor 64, and a memory 65. The antenna 61 is connected to the RF device 62. In the uplink direction, the RF device 62 receives information through the antenna 61 and transmits the received information to the baseband device 63 for processing. In the downlink direction, the baseband device 63 processes the information to be transmitted and sends it to the RF device 62. The RF device 62 processes the received information and transmits it through the antenna 61.

[0258] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 63, which includes a baseband processor.

[0259] The radio frequency device 62 is used to send target indication information to the UE. The target indication information is used by the UE to update the first TCI status list. The updated first TCI status list takes effect after the first time slot, which is determined according to the duration required for the update process of the first TCI status list.

[0260] This application provides a network-side device that can update a first TCI status list based on target indication information. The updated first TCI status list takes effect after a first time slot, which is determined based on the duration required for the update process of the first TCI status list. In this solution, after updating the first TCI status list, the network-side device can determine the effective time of the updated first TCI status list based on the duration required for the update process. That is, the effective time of TCI can be flexibly determined based on the duration required for the update process of the first TCI status list, which facilitates the scheduling of UEs by the network-side device and also increases the flexibility of the UE in responding to the TCI status list, thereby avoiding the loss of uplink and downlink data transmission performance when the network-side device schedules the UE.

[0261] The network-side device provided in this application embodiment can implement the various processes implemented by the network-side device in the above method embodiment and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0262] Baseband device 63 may include, for example, at least one baseband board on which multiple chips are disposed, such as Figure 12 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 65 via a bus interface to call the program in the memory 65 and execute the network device operation shown in the above method embodiment.

[0263] The network-side device may also include a network interface 66, such as a common public radio interface (CPRI).

[0264] Specifically, the network-side device 600 in this application embodiment further includes: instructions or programs stored in memory 65 and executable on processor 64, wherein processor 64 calls the instructions or programs in memory 65 to execute. Figure 9 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0265] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0266] The processor is the processor in the communication device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0267] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above method embodiments and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0268] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0269] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above method embodiments and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0270] This application also provides a communication system, including a UE and a network-side device, wherein the UE can be used to perform the steps of the TCI state update method as described above, and the network-side device can be used to perform the steps of the TCI state update method as described above.

[0271] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0272] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0273] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for updating the Transmission Configuration Indicator (TCI) status, characterized in that, The method includes: User equipment (UE) obtains target indication information; The UE updates the first TCI status list according to the target indication information, wherein the updated first TCI status list takes effect after the first time slot, and the first time slot is determined according to the duration required for the update process of the first TCI status list. The first TCI state list includes any of the following: independent TCI and at least one joint TCI; The independent TCI includes at least one uplink TCI and at least one downlink TCI. The uplink TCI is used to indicate uplink beam information transmitted uplink, and the downlink TCI is used to indicate downlink quasi-co-address (QCL) information transmitted downlink. The combined TCI is used to indicate the downlink QCL of downlink transmission and the uplink beam information of uplink transmission; The first time slot is determined based on the maximum value of a first duration and a second duration, wherein the first duration is the duration required for the update process of the at least one uplink TCI, and the second duration is the duration required for the update process of the at least one downlink TCI. or, The first time slot is determined based on a third duration, which is the duration required for the update process of the at least one joint TCI.

2. The method according to claim 1, characterized in that, The first duration is determined based on the state of at least one uplink TCI, and the second duration is determined based on the state of at least one downlink TCI; The state can be any of the following: known state, unknown state, active state, or inactive state.

3. The method according to claim 2, characterized in that, In the case where there is an uplink TCI with an unknown state in at least one uplink TCI, the first duration includes the duration required for the UE to measure the target parameters of the first reference signal; In the case that there is an unknown state in at least one downlink TCI, the second duration includes the duration required for the UE to measure the target parameters of the second reference signal; Wherein, the first reference signal is a reference signal associated with the uplink TCI in an unknown state, and the second reference signal is a reference signal associated with the downlink TCI in an unknown state.

4. The method according to claim 2, characterized in that, In the case where at least one uplink TCI is in an inactive state, the first duration includes the duration required for the UE to measure the synchronization signal block SSB associated with the third reference signal, or, In the case where there is an inactive downlink TCI in at least one downlink TCI, the second duration includes the duration required for the UE to measure the SSB associated with the fourth reference signal; The third reference signal is a reference signal associated with the uplink TCI in an inactive state, and the fourth reference signal is a reference signal associated with the downlink TCI in an inactive state.

5. The method according to claim 1, characterized in that, The first duration or the second duration is determined based on the state of the TCI in the first TCI status list on each of the multiple carriers; The state of the TCI in the first TCI state list on each carrier is determined based on the measurement results of the fifth reference signal on the respective carrier.

6. The method according to claim 5, characterized in that, In the case where there is a TCI in the first TCI state list whose state is unknown on at least one carrier, the first duration or the second duration includes the duration required for the UE to measure the target parameters of the first reference signal group. The first reference signal group is determined according to the second reference signal group, which is the sixth reference signal indicated by all TCIs in the first TCI state list on all carriers.

7. The method according to claim 1, characterized in that, The third duration is determined based on the state of the at least one joint TCI, which is any one of the following: known state, unknown state, active state, and inactive state.

8. The method according to claim 7, characterized in that, In the case where there is an unknown state in at least one joint TCI, the third duration includes the duration required for the UE to measure the target parameters of the seventh reference signal; In the case where an inactive joint TCI exists in at least one joint TCI, the third duration includes the duration required for the UE to measure the SSB associated with the eighth reference signal; The seventh reference signal is a reference signal associated with the joint TCI in an unknown state, and the eighth reference signal is a reference signal associated with the joint TCI in an inactive state.

9. The method according to claim 1, characterized in that, The third duration is determined based on the state of the TCI in the first TCI state list on each of the multiple carriers. The state of the TCI in the first TCI state list on each carrier is determined based on the measurement results of the eighth reference signal on the respective carrier.

10. The method according to claim 9, characterized in that, In the case where there is a TCI in the first TCI state list whose state is unknown on at least one carrier, the third duration includes the duration required for the UE to measure the target parameters of the first reference signal group, the first reference signal group being determined based on the second reference signal group, the second reference signal group being the ninth reference signal indicated by all TCIs in the first TCI state list on all carriers.

11. The method according to claim 6, characterized in that, Before the UE obtains the target indication information, the method further includes: The UE determines the maximum number of reference signals in the first reference signal group based on the first UE capability information.

12. The method according to any one of claims 1 to 11, characterized in that, The TCI in the first TCI status list is used to indicate at least one of the following for the UE: first type QCL information on each of the N carriers, type D QCL information on the N carriers, and uplink beam information. The first type QCL information includes type A QCL information, type B QCL information, and type C QCL information, and N is an integer greater than or equal to 1.

13. The method according to claim 1, characterized in that, After the UE obtains the target indication information, the method further includes: The UE updates the path loss reference signal (PL-RS) list according to the target indication information, wherein the updated PL-RS list takes effect after the second time slot.

14. The method according to claim 1 or 13, characterized in that, The UE obtains target indication information, including: The UE receives Media Access Control and Execution Control (MAC CE) signaling sent by the network-side device, and the MAC CE signaling includes the target indication information.

15. The method according to claim 1 or 13, characterized in that, Before the UE obtains the target indication information, the method further includes: The UE receives target configuration information sent by the network-side device. The target configuration information is used to configure a second TCI state list and a reference signal set for the UE. The TCI in the second TCI state list is used to indicate the source reference signal information of at least one QCL.

16. The method according to claim 1 or 13, characterized in that, After the UE updates the first TCI status list according to the target indication information, the method further includes: When the updated first TCI status list is in effect, the UE uses the updated first TCI status list to transmit target data, which includes at least one of the following: uplink / downlink scheduling information, uplink data, downlink data, and feedback information.

17. A method for updating the Transmission Configuration Indicator (TCI) status, characterized in that, The method includes: The network-side device sends target indication information to the user equipment (UE). The target indication information is used by the UE to update the first TCI state list. The updated first TCI state list takes effect after the first time slot. The first time slot is determined according to the duration required for the update process of the first TCI state list. The first TCI state list includes any of the following: independent TCI and at least one joint TCI; The independent TCI includes at least one uplink TCI and at least one downlink TCI. The uplink TCI is used to indicate uplink beam information transmitted uplink, and the downlink TCI is used to indicate downlink quasi-co-address (QCL) information transmitted downlink. The combined TCI is used to indicate the downlink QCL of downlink transmission and the uplink beam information of uplink transmission; The first time slot is determined based on the maximum value of a first duration and a second duration, wherein the first duration is the duration required for the update process of the at least one uplink TCI, and the second duration is the duration required for the update process of the at least one downlink TCI. or, The first time slot is determined based on a third duration, which is the duration required for the update process of the at least one joint TCI.

18. The method according to claim 17, characterized in that, The target indication information is also used by the UE to update the path loss reference signal (PL-RS) list, wherein the updated PL-RS list takes effect after the second time slot.

19. The method according to claim 17 or 18, characterized in that, The network-side device sends target indication information to the UE, including: The network-side device sends a Media Access Control and Execution Control (MAC CE) signaling message to the UE, and the MAC CE signaling message includes the target indication information.

20. The method according to claim 17 or 18, characterized in that, Before the network-side device sends target indication information to the UE, the method further includes: The network-side device sends target configuration information to the UE. The target configuration information is used to configure a second TCI state list and a reference signal set for the UE. The TCI in the second TCI state list is used to indicate the source reference signal information of at least one QCL.

21. A Transmission Configuration Indicator (TCI) status update device, characterized in that, The device includes: an acquisition module and an update module; The acquisition module is used to acquire target indication information; The update module is used to update the first TCI status list according to the target indication information obtained by the acquisition module, wherein the updated first TCI status list takes effect after the first time slot, and the first time slot is determined according to the duration required for the update process of the first TCI status list. The first TCI state list includes any of the following: independent TCI and at least one joint TCI; The independent TCI includes at least one uplink TCI and at least one downlink TCI. The uplink TCI is used to indicate uplink beam information transmitted uplink, and the downlink TCI is used to indicate downlink quasi-co-address (QCL) information transmitted downlink. The combined TCI is used to indicate the downlink QCL of downlink transmission and the uplink beam information of uplink transmission; The first time slot is determined based on the maximum value of a first duration and a second duration, wherein the first duration is the duration required for the update process of the at least one uplink TCI, and the second duration is the duration required for the update process of the at least one downlink TCI. or, The first time slot is determined based on a third duration, which is the duration required for the update process of the at least one joint TCI.

22. A Transmission Configuration Indicator (TCI) status update device, characterized in that, The device includes: a transmitting module; The sending module is used to send target indication information to the user equipment (UE); The target indication information is used by the UE to update the first TCI status list. The updated first TCI status list takes effect after the first time slot, and the first time slot is determined according to the time required for the update process of the first TCI status list. The first TCI state list includes any of the following: independent TCI and at least one joint TCI; The independent TCI includes at least one uplink TCI and at least one downlink TCI. The uplink TCI is used to indicate uplink beam information transmitted uplink, and the downlink TCI is used to indicate downlink quasi-co-address (QCL) information transmitted downlink. The combined TCI is used to indicate the downlink QCL of downlink transmission and the uplink beam information of uplink transmission; The first time slot is determined based on the maximum value of a first duration and a second duration, wherein the first duration is the duration required for the update process of the at least one uplink TCI, and the second duration is the duration required for the update process of the at least one downlink TCI. or, The first time slot is determined based on a third duration, which is the duration required for the update process of the at least one joint TCI.

23. A user equipment (UE), characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the Transmission Configuration Indicator (TCI) state update method as claimed in any one of claims 1 to 16.

24. A network-side device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the Transmission Configuration Indicator (TCI) state update method as claimed in any one of claims 17 to 20.

25. A communication system, characterized in that, The communication system includes the Transmission Configuration Indication (TCI) status update device as described in claim 21 and the TCI status update device as described in claim 22; or... The communication system includes the user equipment (UE) as described in claim 23 and the network-side equipment as described in claim 24.

26. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the Transmission Configuration Indicator (TCI) state update method as claimed in any one of claims 1 to 16, or implement the steps of the TCI state update method as claimed in any one of claims 17 to 20.

Images