Transmission configuration instruction TCI status update method, user equipment UE, and network side device

Abstract

The present application discloses a TCI status updating method, an apparatus, a communication device, a system and a storage medium, which belong to the field of communication technology. The TCI status updating method of an embodiment of the present application includes: a UE obtaining target indication information (201); and updating a first TCI status list based on the target indication information (202), wherein the updated first TCI status list is enabled after a first slot, and the first slot is determined based on a time length required for the update processing process of the first TCI status list (202).

Description

[Technical Field]

[0001] The present application relates to the field of communication technology, and specifically to a TCI status update method, device, communication device, system, and storage medium. [Background technology]

[0002] A network side device can send a Transmission Configuration Indicator (TCI) to a User Equipment (UE) to schedule the UE for uplink and downlink data transmission. Regarding the TCI activation time, for example, in an independent TCI scenario or a joint TCI scenario, the network side device and the UE side need to match the TCI activation time to ensure uplink and downlink data transmission performance when the network side device schedules the UE. However, how the UE determines the TCI activation time is an issue that needs to be resolved quickly. Summary of the Invention [Problem to be solved by the invention]

[0003] The embodiments of the present application provide a TCI status update method, device, communication device, system, and storage medium that can solve the problem of how a UE determines the activation time of a TCI. [Means for solving the problem]

[0004] According to a first aspect, a TCI status update method is provided, the method including: a UE acquiring target indication information; and updating a first TCI status list based on the target indication information, wherein the updated first TCI status list is enabled after a first slot, and the first slot is determined based on a time length required for the update processing process of the first TCI status list.

[0005] According to a second aspect, there is provided a TCI status updating device, the device including: an acquisition module; and an update module. The acquisition module is used to acquire target indication information. The update module is used to update a first TCI status list based on the target indication information acquired by the acquisition module, wherein the updated first TCI status list is enabled after a first slot, and the first slot is determined based on a length of time required for an update processing process of the first TCI status list.

[0006] According to a third aspect, there is provided a TCI status update method, the method including: a network side device transmitting target indication information to a UE; the target indication information being used by the UE to update a first TCI status list; wherein the updated first TCI status list is enabled after a first slot, and the first slot is determined based on a time length required for the update processing process of the first TCI status list.

[0007] According to a fourth aspect, there is provided a TCI status updating device, the device including: a transmitting module, the transmitting module is used to transmit target indication information to a UE, where the target indication information is used by the UE to update a first TCI status list, where the updated first TCI status list is enabled after a first slot, and the first slot is determined based on a time length required for the update processing process of the first TCI status list.

[0008] According to a fifth aspect, there is provided a UE, the UE including a processor and a memory, the memory storing a program or instructions operable to run on the processor, the program or instructions, when executed by the processor, implementing the steps of the method according to the first aspect.

[0009] According to a sixth aspect, there is provided a UE including a processor and a communication interface, wherein the processor ,TaThe target instruction information is obtained and used to update the first TCI status list based on the target instruction information, where the updated first TCI status list is enabled after a first slot, and the first slot is determined based on the length of time required for the update processing process of the first TCI status list.

[0010] According to a seventh aspect, there is provided a network side device, the network side device including a processor and a memory, the memory storing a program or instructions operable to run on the processor, the program or instructions, when executed by the processor, realizing the steps of the method according to the third aspect.

[0011] According to an eighth aspect, there is provided a network side device including a processor and a communication interface, wherein the communication interface is used to send target indication information to a UE, and the target indication information is used by the UE to update a first TCI status list, wherein the updated first TCI status list is enabled after a first slot, and the first slot is determined based on a length of time required for the update processing process of the first TCI status list.

[0012] According to a ninth aspect, there is provided a communication system including a UE and a network side device, wherein the UE may be used to perform steps of the TCI status updating method described in the first aspect, and the network side device may be used to perform steps of the TCI status updating method described in the third aspect.

[0013] According to a tenth aspect, there is provided a readable storage medium having a program or instructions stored thereon, the program or instructions performing the steps of the method according to the first aspect or performing the steps of the method according to the third aspect when executed by a processor.

[0014] According to an eleventh aspect, there is provided a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor running a program or instruction to implement the method of the first aspect or to be used to implement the method of the third aspect.

[0015] According to a twelfth aspect, a computer program / program product is provided, the computer program / program product being stored on a storage medium, and the computer program / program product being executed by at least one processor to implement the steps of the TCI status update method described in the first aspect or the steps of the TCI status update method described in the third aspect. [Effects of the Invention]

[0016] In an embodiment of the present application, the UE may update the first TCI status list based on the target indication information, and the updated first TCI status list is enabled after a first slot, where the first slot is determined based on the time required for the update process of the first TCI status list. In this solution, after updating the first TCI status list, the UE may determine the activation time of the updated first TCI status list based on the time required for the update process of the first TCI status list, i.e., the TCI activation time can be flexibly determined based on the time required for the update process of the first TCI status list, which facilitates UE scheduling by the network side device and increases the flexibility of UE activation of the TCI status list, thereby avoiding loss of uplink and downlink data transmission performance when the network side device schedules the UE. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is an architecture schematic diagram of a wireless communication system according to an embodiment of the present application; [Figure 2]1 is a schematic diagram of a TCI status update method according to an embodiment of the present application; [Figure 3] 2 is a second schematic diagram of a TCI status update method according to an embodiment of the present application; [Figure 4] 3 is a third schematic diagram of a TCI status update method according to an embodiment of the present application; [Figure 5] 4 is a fourth schematic diagram of a TCI status update method according to an embodiment of the present application. [Figure 6] 1 is a flowchart of a TCI status update according to an embodiment of the present application. [Figure 7] 5 is a fifth schematic diagram of a TCI status update method according to an embodiment of the present application. [Figure 8] 1 is a structural schematic diagram of a TCI status update device according to an embodiment of the present application; [Figure 9] 2 is a second structural schematic diagram of a TCI status update device according to an embodiment of the present application; [Figure 10] 1 is a hardware structure schematic diagram of a communication device according to an embodiment of the present application; [Figure 11] 1 is a hardware structure schematic diagram of a UE according to an embodiment of the present application; [Figure 12] FIG. 2 is a hardware structural schematic diagram of a network-side device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0018] The following clearly describes the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application fall within the scope of protection of the present application.

[0019] The terms "first," "second," etc. in the specification and claims of this application are intended to distinguish between similar objects and are not intended to describe a particular order or sequence. It should be understood that terms used in this manner are interchangeable where appropriate, so that embodiments of this application may be performed in orders other than those illustrated or described herein, and that objects distinguished by "first" and "second" are generally of the same type and do not limit the number of objects; for example, a first object may be one or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the related objects.

[0020] It should be noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be applied to 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 always used interchangeably, and the described techniques may be used in the above-mentioned systems and radio technologies as well as other systems and radio technologies. Although the following description describes a New Radio (NR) system for illustrative purposes and uses NR terminology in most of the following description, these techniques may be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.

[0021] 1 is a block diagram of a wireless communication system to which the embodiment of the present application can be applied. The wireless communication system includes a terminal 11 and a network side device 12. Here, the terminal 11 may be a terminal-side device such as a mobile phone, a tablet personal computer, a laptop computer (also called a notebook 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 equipment (VUE), a pedestrian-mounted equipment (PUE), a smart home (home equipment with wireless communication capabilities, such as a refrigerator, television, washing machine, or furniture), a game console, a personal computer (PC), a teller machine, or a self-service machine, and wearable devices include a smart watch, a smart wristband, a smart earphone, a smart glasses, a smart accessory (a smart bracelet, a smart hand chain, a smart ring, a smart necklace, a smart ankle bracelet, a smart anklet, etc.), a smart band, a smart garment, etc. It should be noted that the terminal 11 in the embodiment of the present application is not limited to a specific type. The network side equipment 12 may include an access network equipment or a core network equipment, where the access network equipment The vessel It may also be called a radio access network device, a radio access network (RAN), a radio access network function, or a radio access network unit. The vessel, a base station, a WLAN access point, or a WiFi node, and the base station may be called 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 B node, a home evolved B node, a transmitting receiving point (TRP), or any other appropriate term in the art. As long as the same technical effect is achieved, the base station is not limited to a specific technical term. It should be noted that the embodiments of this application only take base stations in an NR system as examples, and do not limit the specific type of base station.

[0022] The following provides an explanation of some concepts and / or terms related to the TCI status update method, apparatus, communication device, system, and storage medium according to the embodiments of the present application.

[0023] Carrier Aggregation (CA): To meet the demand for increasing single-user peak rates and system capacity, the most straightforward approach is to increase the system transmission bandwidth. Therefore, CA, a technology for increasing transmission bandwidth, has been introduced. CA technology aggregates two to five LTE component carriers (CCs) to achieve a transmission bandwidth of up to 100 MHz, effectively improving uplink and downlink transmission rates. CA supports contiguous or non-contiguous carrier aggregation, with each carrier having a maximum usable resource of 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 one specific carrier. The physical downlink control channels (PDCCHs) on each carrier are mutually independent, and the PDCCHs of each carrier can be used to allocate resources for the physical downlink shared channels (PDSCHs) of each carrier.

[0024] The following describes in detail the transmission configuration indication TCI status update method according to the embodiments of the present application through several embodiments and its application scenarios in conjunction with the drawings.

[0025] Currently, for a separate TCI scenario, the uplink switching time and the downlink switching time may be different, i.e., the uplink TCI and the downlink TCI may have independent activation times, and thus for a joint TCI, the uplink and downlink may have independent activation times.

[0026] In the TCI update method, for the TCI indicated by the Media Access Control-Control Element (MAC CE), the definition of the activation time is defined for a single-carrier scenario and can be directly reused for a multi-carrier scenario in which each carrier has an independent TCI configuration. Specific channels on each carrier, such as PDSCH, PDCCH, and Physical Uplink Shared Channel (PUSCH), may have independent TCI or beam-related (Spatial Relation, SR) activation times, so the uplink and downlink are obviously independent. The conventional solution leads to the following problems:

[0027] 1. The downlink activation time is completely independent, i.e., when the downlink TCI is activated, the uplink TCI is not necessarily activated; or when the downlink TCI is activated, the uplink TCI is not necessarily activated. TCI is not necessarily enabled, which results in the TCI bringing unclear time periods to network scheduling, which may prevent the network or UE from successfully identifying the cause of the transmission problem and further affect the network's strategy decisions.

[0028] 2. When a UE performs uplink TCI switching or downlink TCI switching, it is limited by the TCI switching time margin and cannot complete the switching in a batch. For example, the uplink beam switching time is earlier than the downlink beam switching time, resulting in mismatch of the UE's uplink and downlink beams, which affects transmission performance.

[0029] 3. The activation time in conventional technologies is difficult to extend to multi-carrier scenarios (carrier aggregation).

[0030] In an embodiment of the present application, the UE may update the first TCI status list based on the target indication information, and the updated first TCI status list is enabled after a first slot, where the first slot is determined based on the time required for the update process of the first TCI status list. In this solution, after updating the first TCI status list, the UE may determine the activation time of the updated first TCI status list based on the time required for the update process of the first TCI status list, i.e., the TCI activation time can be flexibly determined based on the time required for the update process of the first TCI status list, which facilitates UE scheduling by the network side device and increases the flexibility of UE activation of the TCI status list, thereby avoiding loss of uplink and downlink data transmission performance when the network side device schedules the UE.

[0031] An embodiment of the present application provides a TCI status update method, and Figure 2 shows a flowchart of a transmission configuration instruction TCI status update according to an embodiment of the present application. As shown in Figure 2, the transmission configuration instruction TCI status update method according to an embodiment of the present application may include the following steps 201 and 202.

[0032] Step 201: The UE obtains target indication information.

[0033] In an embodiment of the present application, the target indication information is used to instruct the UE to update a first TCI status list (i.e., a MAC-CE list), where the first TCI status list includes at least one TCI status.

[0034] Optionally, in an embodiment of the present application, the target indication information is configured by a network side device.

[0035] Optionally, in the embodiment of the present application, as shown in FIG. 3, combined with FIG. 2, the above step 201 can be specifically realized by the following steps 201a and 201b.

[0036] Step 201a: the network side device sends target indication information to the UE.

[0037] Step 201b: the UE receives target indication information sent by the network side equipment.

[0038] Optionally, in the embodiment of the present application, the above step 201a can be specifically realized by the following step 201a1, and the above step 201b can be specifically realized by the following step 201b1.

[0039] Step 201a1: the network side device sends MAC CE signaling to the UE.

[0040] In the embodiment of the present application, the above MAC CE signaling includes target indication information.

[0041] Step 201b1, the UE receives MAC CE signaling sent by the network side equipment.

[0042] Optionally, in an embodiment of the present application, by combining FIG. 2 and as shown in FIG. 4, before the above step 201, the transmission configuration indication TCI status update method according to the embodiment of the present application further includes the following steps 301 and 302:

[0043] Step 301: The network side device sends target configuration information to the UE.

[0044] In an embodiment of the present application, the target configuration information is used to configure a second TCI status list and a reference signal set for the UE, and the TCIs in the second TCI status list are used to indicate source reference signal information of at least one Quasi Co-location (QCL).

[0045] Step 302: The UE receives target configuration information sent by the network side device.

[0046] Optionally, in an embodiment of the present application, the network side device can configure a second TCI state list (i.e., an RRC list) through Radio Resource Control (RRC) signaling, where each TCI state indicates one or two QCL-related or uplink beam-related source reference signal information, and the TCI state list includes an uplink TCI and a downlink TCI, or includes a joint TCI. The second TCI state list includes at least two TCI states. A TCI state set in the first TCI state list is a subset of a TCI state set in the second TCI state list.

[0047] It should be noted that the uplink TCI and the downlink TCI are all independent TCIs, and the joint TCI and the independent TCI are not collectively configured in the UE by the RRC.

[0048] Optionally, in the embodiment of the present application, the network side device can configure a set of reference signals (RS) and further configure the QCL relationship of these reference signals based on the previously configured second TCI status list. Among various reference signal configurations, there is a reference signal for determining downlink path loss and calculating uplink transmit power, i.e., a pathloss reference signal (PL-RS). An association may be established between such a reference signal and an uplink TCI or a joint TCI. That is, when a certain uplink TCI or a joint TCI is in an activated state, the UE needs to further maintain this PL-RS. When the activated uplink TCI list changes, the corresponding pathloss reference signal also changes.

[0049] Optionally, in an embodiment of the present application, after receiving a MAC CE, the UE first demodulates the corresponding PDSCH, and then feeds back an acknowledgement (ACK) or non-acknowledgement (NACK) at the physical layer based on the check status of a cyclic redundancy check (CRC). After that, the UE can extract the MAC CE from the data uploaded from the physical layer to the MAC layer, and solve the first TCI status list indicated by this MAC CE.

[0050] It should be noted that, since the UE cannot obtain any information of the first TCI status list before the UE completes MAC CE decoding, the UE can perform downlink (DL) / uplink (UL) scheduling monitoring, uplink / downlink data transmission and related ACK / NACK feedback based on the original first TCI status list.

[0051] Step 202: The UE updates the first TCI status list based on the target indication information.

[0052] In an embodiment of the present application, the updated first TCI status list is enabled after the first slot, and this first slot is determined based on the length of time required for the update processing process of the first TCI status list.

[0053] Optionally, in an embodiment of the present application, the length of time required for the first TCI status list update processing process includes:

[0054] (1) The total time length required for the processing flow related to updating the emitted spatial domain filter information associated with the uplink TCI or joint TCI, e.g., when the reference signal indicated by the emitted spatial domain filter information (i.e., uplink beam information) associated with the uplink TCI is still unknown, it is necessary to measure the target parameters for this reference signal.

[0055] (2) The total time length required for the processing flow related to updating the downlink quasi-co-location associated with the downlink TCI or joint TCI. For example, when a reference signal indicated by a downlink quasi-co-location relation associated with a downlink TCI is still unknown, it is necessary to measure target parameters for the reference signal, and when a reference signal indicated by a downlink quasi-co-location relation associated with a downlink TCI is not yet activated, it is necessary to first measure and process a synchronization signal block (SSB) associated with the reference signal corresponding to this TCI to obtain related synchronization information, etc.

[0056] (3) The total time length required for the processing flow related to updating the PL-RS list. For example, when the uplink TCI corresponding to the PL-RS is not yet activated, it is necessary to measure the reference signal related to the PL-RS to obtain the target parameter value and accurate downlink path loss information. It should be noted that even when the uplink TCI or the joint TCI is in an unknown state, it is necessary to determine whether the corresponding TCI state is in an activated state.

[0057] Optionally, in an embodiment of the present application, the first TCI status list includes any one of an independent TCI and at least one joint TCI, where 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 of the uplink transmission, the downlink TCI is used to indicate downlink QCL information of the downlink transmission, and the joint TCI is used to indicate downlink QCL information of the downlink transmission. information and is used to indicate uplink beam information for uplink transmission.

[0058] Optionally, in an embodiment of the present application, the network side device can issue a TCI status update instruction (i.e., target indication information) by the MAC CE, and this TCI status update instruction includes an uplink TCI and a downlink TCI, or includes updating a joint TCI, where the uplink TCI may be one or more uplink TCIs, the downlink TCI may be one or more downlink TCIs, and the joint TCI may be one or more joint TCIs.

[0059] It should be noted that the joint TCI and the independent TCI are not collectively configured in the UE by the RRC, and therefore the joint TCI and the independent TCI cannot be activated simultaneously by one MAC CE.

[0060] Optionally, in an embodiment of the present application, the first slot is determined based on the maximum value of a first time length and a second time length, where the first time length is the time length required for the update processing process of at least one uplink TCI, and the second time length is the time length required for the update processing process of at least one downlink TCI.

[0061] As can be understood, when the network side device updates the first TCI status list using MAC CE, the UE can perform a related parameter update indicated by the downlink TCI and a related parameter update indicated by the uplink TCI, and the UE can determine the activation time of the new first TCI status list based on the later of the two update times, and the UE can determine the update time of the PL-RS based on the status of the uplink TCI.

[0062] Optionally, in an embodiment of the present application, the first duration is determined based on a state of at least one uplink TCI, and the second duration is determined based on a state of at least one downlink TCI, where the state is one of a known state, an unknown state, an activated state, and a non-activated state.

[0063] In an embodiment of the present application, the UE can determine the state of each TCI (i.e., known state, unknown state, already activated state, or not activated state) based on the currently activated first TCI state list (not updated based on target indication information at this time) and measurement results for the reference signal.

[0064] Optionally, in an embodiment of the present application, when the UE determines whether the TCI is in a known state, it can do so based on the measurement results of the reference signal and whether the UE has previously performed measurement reporting of the associated reference signal.

[0065] It should be noted that the known state of a TCI is defined to avoid a situation where, during the process of configuring and activating a TCI by a network side device, the UE does not strictly perform TCI list configuration, reference signal configuration, and beam measurement, but performs blind configuration based on other information, since the UE has not performed the relevant measurement, i.e., has not obtained the synchronization or beam information indicated by the TCI state, additional time is required to activate the corresponding TCI state.

[0066] Alternatively, in an embodiment of the present application, the UE may determine whether a TCI is in an activated state, and for a TCI in a known state, the UE may determine based on whether the TCI to be activated is already in the activated list, and for a TCI in an unknown state, the UE may determine based on whether the QCL relationship corresponding to the TCI to be activated is related to SSB.

[0067] Optionally, in an embodiment of the present application, when at least one uplink TCI is in an unknown state, the first time length includes the time length required for the UE to measure a target parameter for the first reference signal.

[0068] In an embodiment of the present application, the first reference signal is a reference signal associated with an uplink TCI in an unknown state.

[0069] It should be noted that the first reference signal related to the TCI may be the source reference signal of the QCL-related or launch beam information indicated by the TCI, or may be another reference signal that is in a QCL-related chain with the source reference signal, where being in a QCL-related chain means that the QCL-related target reference signal of the first reference signal is directly the source reference signal of the QCL-related or launch beam information indicated by the TCI, or the first reference signal and the source reference signal of the QCL-related or launch beam information indicated by the TCI are in the same QCL-related chain.

[0070] As can be understood, when at least one TCI among the multiple uplink TCIs is in an unknown state, the first time length must include the time required for target parameter measurement for the first reference signal, where the measurement time for the first reference signal is determined based on the period of a periodic signal associated with the uplink TCI in this unknown state, or based on the measurement slot of a non-periodic signal associated with the uplink TCI in this unknown state.

[0071] It should be noted that when more than one uplink TCI is in an unknown state, the time required for target parameter measurement for the first reference signal is determined according to the measurement occasion of the last-arrived reference signal among all reference signals associated with the multiple unknown uplink TCIs.

[0072] Optionally, in an embodiment of the present application, the target parameter is Reference Signal Receiving Power (RSRP), for example, Layer 1-RSRP (ie, L1-RSRP).

[0073] Optionally, in an embodiment of the present application, when at least one downlink TCI is in an unknown state, the second time length includes a time length required for the UE to measure a target parameter for the second reference signal.

[0074] In an embodiment of the present application, the second reference signal is a reference signal associated with a downlink TCI in an unknown state.

[0075] As can be understood, when at least one TCI among the plurality of downlink TCIs is in an unknown state, the second time length must include the time required for target parameter measurement for the second reference signal, where the measurement time for the second reference signal is determined based on the period of a periodic signal associated with the downlink TCI in this unknown state, or based on the measurement slot of a non-periodic signal associated with the downlink TCI in this unknown state.

[0076] It should be noted that when more than one downlink TCI is in an unknown state, the time required for target parameter measurement for the second reference signal is determined according to the measurement occasion of the last-arrived reference signal among all reference signals associated with the multiple unknown downlink TCIs.

[0077] Optionally, in an embodiment of the present application, when at least one uplink TCI is in an inactive state, the first time length includes the time length required for the UE to measure an SSB associated with a third reference signal.

[0078] In an embodiment of the present application, the third reference signal is a reference signal associated with an uplink TCI in a non-activated state.

[0079] As can be understood, when at least one TCI among the multiple uplink TCIs is in an inactivated state, the first time length needs to include the time for measuring and processing the SSBs associated with the reference signal (i.e., the third reference signal) corresponding to at least one TCI in an inactivated state. It should be noted that when more than one TCI is in an inactivated state, the activation time of the first TCI status list is determined according to the maximum period of the associated SSBs.

[0080] Optionally, in an embodiment of the present application, when at least one downlink TCI is in an inactive state, the second time length includes the time length required for the UE to measure the SSB associated with the fourth reference signal.

[0081] In an embodiment of the present application, the fourth reference signal is a reference signal associated with a downlink TCI in an inactive state.

[0082] As can be understood, when at least one TCI among the plurality of downlink TCIs is in an inactivated state, the second time length needs to include the time for measuring and processing the SSBs associated with the reference signal (i.e., the fourth reference signal) corresponding to at least one TCI in an inactivated state. It should be noted that when more than one TCI is in an inactivated state, the activation time of the first TCI status list is determined according to the maximum period of the associated SSBs.

[0083] Optionally, in an embodiment of the present application, the TCI in the first TCI status list is used to indicate at least one of first type QCL information on each of the UE's N carriers, D type QCL information on the N carriers, and uplink beam information, where the first type QCL information includes A type QCL information, B type QCL information, and C type QCL information, and N is an integer greater than or equal to 1.

[0084] Optionally, in an embodiment of the present application, the first type of QCL information (i.e., ABC type QCL information) is indicated by a TCI in the first TCI status list indicating a fifth reference signal on each carrier on each carrier.

[0085] It should be noted that the source reference signal of ABC type QCL information is configured independently for each carrier, while D type QCL information and uplink beam information are uniquely configured on a carrier within a frequency band and can be shared by all carriers within this frequency band.

[0086] In an embodiment of the present application, a UE can perform beam measurement based on a reference signal configured by a network side device and feed back the calculated measurement result of the target parameter (i.e., L1-RSRP). Specifically, the UE can determine a corresponding reference signal configuration based on a reporting configuration including the target parameter configured by the network side device and perform beam measurement of the target parameter on these reference signals. In particular, when performing beam measurement, the UE can determine downlink time-frequency synchronization and uplink and downlink beams to be used when performing these measurements and related periodic reporting based on QCL information of the reference signals.

[0087] It should be noted that time-frequency synchronization may include time-domain synchronization and frequency-domain synchronization, and is indicated by an ABC-type QCL relationship. The ABC-type QCL relationship is a collective term for A-type, B-type, and C-type QCL relationships. The A-type QCL relationship includes the mean delay and delay extension required for time-domain synchronization, and the Doppler offset and Doppler extension information required for frequency-domain synchronization. The B-type QCL relationship only includes the Doppler offset and Doppler extension information required for frequency-domain synchronization. The C-type QCL relationship only includes information on the mean delay and Doppler offset. The UE can determine time-domain synchronization information or frequency-domain synchronization information of a target signal or channel based on the source reference signal in each QCL relationship among the A-type, B-type, and C-type QCL relationships.

[0088] The downlink beam information is also called spatial domain receive filter information or D-type QCL information. After the network side equipment indicates the downlink beam information, the UE can determine the downlink beam information of the target signal or channel based on the source reference signal. The uplink beam information is also called emission spatial domain transmit filter information (Spatial Tx filter) or transmit spatial domain relation information (Tx Spatial Relation). After the network side equipment indicates the uplink beam information, the UE can determine the uplink beam information of the target signal or channel based on the source reference signal.

[0089] Optionally, in an embodiment of the present application, the first time length or the second time length is determined based on the status of the TCI on each of the multiple carriers in the first TCI status list, and the status of the TCI on each of the carriers in the first TCI status list is determined based on measurement results of the fifth reference signal on each carrier.

[0090] In an embodiment of the present application, the UE can determine the activation time of the first TCI status list based on the current status of each TCI on each carrier in the first TCI status list, and can determine the status of each TCI on each carrier (i.e., known status, unknown status, already activated status, or not activated status) based on the currently activated first TCI status list (not updated based on target indication information at this time) and measurement results for the reference signal.

[0091] In the embodiment of the present application, when the UE determines whether the TCI is known on each component carrier, the determination can be based on the measurement result of the reference signal on each carrier and whether the UE has previously performed measurement reporting on the related reference signal.It should be noted that, since the reference signal on each carrier itself also constitutes QCL information, when the UE determines whether the TCI is known on each carrier, it needs to refer to the configuration status of the QCL information of the reference signal on each carrier.

[0092] As can be seen, in a carrier aggregation scenario, the UE can determine the known state on each carrier of each TCI and determine the activation time of the entire first TCI state list based on the known state on each carrier of each TCI.

[0093] For example, assume that RS1 and RS2 are configured on component carriers (CC) 1 and CC2, respectively, and are used as source reference signals of ABC-type QCLs on CC1 and CC2 of TCI, respectively. When determining the known relationship between RS1 and RS2, the source reference signals of ABC-type QCLs of RS1 and RS2 are the same (all RS3). It should be noted that RS3 may be on CC1 or CC2, or on a CC in any frequency band not belonging to CC1 or CC2. Then, if RS3 is an RS measured by a UE and has made an RSRP report, and if all the conditions for determining a known state are met, the TCI is considered known on both CC1 and CC2.

[0094] Optionally, in an embodiment of the present application, when the first TCI status list contains a TCI whose status on at least one carrier is unknown, the first time length or the second time length includes a time length required for the UE to measure a target parameter for a first reference signal group, and this first reference signal group is determined based on a second reference signal group, and this second reference signal group is a sixth reference signal indicated on all carriers by all TCIs in the first TCI status list.

[0095] It should be noted that in order to describe the known state on each CC of a TCI, in the embodiment of the present application, a TCI-CC number pair (a, b) is defined, and is abbreviated as a TCI-CC pair. A known state on a TCI-CC number pair (a, b) is a known state on a CC b of a TCI with number a.

[0096] Optionally, in an embodiment of the present application, when at least one TCI-CC pair among the multiple uplink TCIs is in an unknown state, the first time length needs to include a time required for target parameter measurement for the RS, where the measurement time for the RS is determined based on a period of a periodic signal associated with the unknown TCI-CC pair or a measurement slot of a non-periodic signal associated with the TCI-CC pair. It should be noted that when more than one TCI-CC pair is in an unknown state, the time required for target parameter measurement for the RS is determined according to the latest arriving RS measurement occasion among all RSs associated with the multiple TCI-CC pairs.

[0097] Optionally, in an embodiment of the present application, when at least one TCI-CC pair among the multiple downlink TCIs is in an unknown state, the second time length needs to include a time required for target parameter measurement for the RS, where the measurement time for the RS is determined based on a period of a periodic signal associated with the TCI-CC pair, or based on a measurement slot of a non-periodic signal associated with the unknown downlink TCI on the TCI-CC pair. It should be noted that when more than one TCI-CC pair is in an unknown state, the time required for target parameter measurement for the RS is determined according to the latest-arriving RS measurement occasion among all RSs associated with the unknown downlink TCIs on the multiple TCI-CC pairs.

[0098] Optionally, in an embodiment of the present application, when at least one TCI-CC pair among the multiple uplink TCIs is in an inactive state, the first time length needs to include the time for measuring and processing the SSB associated with the RS corresponding to this TCI-CC pair. It should be noted that when more than one TCI-CC pair is in an inactive state, the activation time of the first TCI status list is determined according to the maximum period of the associated SSB.

[0099] Optionally, in an embodiment of the present application, when at least one TCI-CC pair among the multiple downlink TCIs is in an inactive state, the second time length needs to include the time for measuring and processing the SSB associated with the RS corresponding to this TCI-CC pair. It should be noted that when more than one TCI-CC pair is in an inactive state, the activation time of the first TCI status list is determined according to the maximum period of the associated SSB.

[0100] In an embodiment of the present application, the UE can update at least one uplink TCI and at least one downlink TCI in the first TCI status list based on the target indication information, and ensure that the time nodes of the uplink and downlink TCI updates are consistent in the UE transmission process.The UE can determine the activation time of the first TCI status list based on the maximum value of the first time length (i.e., the time length required for the update process of at least one uplink TCI) and the second time length (i.e., the time length required for the update process of at least one downlink TCI), thereby aligning the activation times of the uplink and downlink TCIs, facilitating the network side device to schedule the UE and increasing the UE's flexibility in activating the first TCI status list, thereby avoiding a loss of uplink and downlink data transmission performance when the network side device schedules the UE.

[0101] Optionally, in an embodiment of the present application, the first slot is determined based on a third time length, and the third time length is a time length required for at least one joint TCI update processing process.

[0102] As can be seen, the network side equipment uses MAC CE to indicate the update of an independent TCI, and the UE can determine the known state of this TCI based on the source RS corresponding to each TCI state, and determine the update times of the related parameters indicated by the downlink TCI and the uplink TCI respectively.

[0103] Optionally, in an embodiment of the present application, after determining, for an independent TCI, a first time length corresponding to updating the emission spatial domain filter information associated with the uplink TCI and a second time length corresponding to updating the downlink quasi-co-location associated with the downlink TCI, the UE can determine that the activation time of the independent TCI is the maximum value among the first time length and the second time length.

[0104] Optionally, in an embodiment of the present application, after determining, for a joint TCI, a first time length corresponding to updating the emission spatial domain filter information associated with the uplink TCI and a second time length corresponding to updating the downlink quasi-co-location associated with the downlink TCI, the UE can collectively determine them based on the known state or activation state of the reference signal corresponding to the joint TCI.

[0105] Optionally, in an embodiment of the present application, the third time period is determined based on a state of at least one joint TCI, where the state is one of a known state, an unknown state, an activated state, and an inactivated state.

[0106] Optionally, in an embodiment of the present application, when at least one joint TCI has an unknown state, the third time length includes a time length required for the UE to measure a target parameter for the seventh reference signal.

[0107] In an embodiment of the present application, the seventh reference signal is a reference signal associated with a joint TCI in an unknown state.

[0108] As can be understood, when at least one TCI among the plurality of joint TCIs is in an unknown state, the third time length needs to include a time required for target parameter measurement for the RS, where the measurement time of the RS is determined based on a period of a periodic signal associated with the unknown joint TCI or based on a measurement slot of a non-periodic signal associated with the unknown joint TCI. It should be noted that when more than one joint TCI is in an unknown state, the time required for target parameter measurement for the RS is determined according to the latest arriving RS measurement occasion among all RSs associated with the plurality of unknown joint TCIs.

[0109] Optionally, in an embodiment of the present application, when at least one joint TCI is in an inactivated state, the third time length includes a time length required for the UE to measure an SSB associated with an eighth reference signal.

[0110] In an embodiment of the present application, the eighth reference signal is a reference signal associated with a joint TCI in a deactivated state.

[0111] As can be understood, when at least one TCI among the plurality of joint TCIs is in an inactivated state, the third time length needs to include the time for measuring and processing the SSBs associated with the RSs corresponding to the at least one TCI in an inactivated state. It should be noted that when more than one TCI is in an inactivated state, the activation time of the joint TCIs is determined according to the maximum period of the associated SSBs.

[0112] Optionally, in an embodiment of the present application, the third time length is determined based on the status of each of the multiple carriers of the TCI in the first TCI status list, and the status of each of the TCIs in the first TCI status list on each carrier is determined based on measurement results of the eighth reference signal on each carrier.

[0113] Optionally, in an embodiment of the present application, when the first TCI status list contains a TCI whose status on at least one carrier is unknown, the third time length includes a time length required for the UE to measure target parameters for a first reference signal group, which is determined based on a second reference signal group, and which is a ninth reference signal indicated on all carriers by all TCIs in the first TCI status list.

[0114] Optionally, in an embodiment of the present application, when at least one TCI-CC pair among the multiple joint TCIs is in an unknown state, the third time length needs to include a time required for target parameter measurement for the RS, where the measurement time for the RS is determined based on a period of a periodic signal associated with the TCI-CC pair in the unknown state or based on a measurement slot of a non-periodic signal associated with the TCI-CC pair. Illustratively, when more than one TCI-CC pair is in an unknown state, the time required for target parameter measurement for the RS is determined according to the latest arriving RS measurement occasion among all RSs associated with the multiple TCI-CC pairs.

[0115] Optionally, in an embodiment of the present application, when at least one TCI-CC pair among the multiple joint TCIs is in an inactive state, the third time length needs to include the time for measuring and processing the SSB associated with the RS corresponding to this TCI-CC pair. It should be noted that when more than one TCI-CC pair is in an inactive state, the activation time of the first TCI status list is determined according to the maximum period of the associated SSB.

[0116] In an embodiment of the present application, in a carrier aggregation scenario, the UE can determine the activation time of the first TCI status list based on the status of the TCI (independent TCI or joint TCI) on each carrier among multiple carriers, which facilitates the network side equipment to schedule the UE and also increases the UE's flexibility in activating the first TCI status list, thereby avoiding loss of uplink and downlink data transmission performance when the network side equipment schedules the UE.

[0117] Optionally, in an embodiment of the present application, before the above step 201, the transmission configuration indication TCI status update method according to the embodiment of the present application further includes the following step 401:

[0118] Step 401: The UE determines a maximum number of reference signals in a first reference signal group based on first UE capability information.

[0119] In one embodiment of the present application, the UE indicates the maximum number of beam measurement reference signals that can be simultaneously configured by reporting the first UE capability information. The network side equipment can determine the maximum number of unknown TCIs that can be activated based on the UE capability information, thereby avoiding interoperability problems or performance loss problems between the UE and the network side equipment due to the number of unknown TCIs activated by the network side equipment exceeding the UE capability.

[0120] In another case, in a multi-carrier scenario, since there are a relatively large number of TCI-CC pairs, the probability that unknown TCI-CC pairs will appear is also relatively large. The UE can indicate the maximum number of beam measurement reference signals that can be simultaneously configured by reporting the first UE capability information. The network side equipment can determine the maximum number of unknown TCI-CC pairs that can be activated based on the UE capability information, thereby avoiding interoperability problems or performance loss between the UE and the network side equipment due to the number of unknown TCI-CC pairs activated by the network side equipment exceeding the UE capability.

[0121] Optionally, in the embodiment of the present application, the target indication information is further used by the UE to update the PL-RS list and activate the updated PL-RS list after the second slot.

[0122] Optionally, in an embodiment of the present application, after the above step 201, the transmission configuration indication TCI status update method according to the embodiment of the present application further includes the following step 501:

[0123] Step 501: The UE updates the PL-RS list according to the target indication information.

[0124] In the embodiment of the present application, the updated PL-RS list is valid after the second slot.

[0125] Alternatively, in the embodiments of the present application, the UE may determine the activation time of the PL-RS based on the state of the uplink TCI and the state of the downlink TCI, or the UE may determine the activation time of the PL-RS based on the state of the joint TCI.

[0126] Alternatively, in the embodiments of the present application, the UE can update the PL-RS list based on an explicit indication manner of the target indication information, i.e., the target indication information is further used to instruct the UE to update the PL-RS list, or the UE can update the PL-RS list based on an implicit indication manner of the target indication information, i.e., an association relationship is established between a TCI (e.g., an independent TCI or a joint TCI) in the first TCI status list and a PL-RS, and updating the first TCI status list can trigger a change of the PL-RS, i.e., the network side device instructs a manner of updating the first TCI status list, so that the UE can update the PL-RS list when updating the first TCI status list.

[0127] Optionally, in the embodiment of the present application, when at least one TCI among the multiple uplink TCIs is in an inactive state, the time for measuring and processing the SSBs should be included when determining the total time length required for the processing flow related to updating the PL-RS list. It should be noted that when more than one TCI is in an inactive state, the available time of the PL-RS list, i.e., the second slot, is determined according to the maximum period of the associated SSBs.

[0128] It should be noted that the second slot may be different from the first slot.

[0129] Optionally, in an embodiment of the present application, when at least one TCI among the multiple joint TCIs is in an inactive state, the total time length required for the processing flow related to updating the PL-RS list should include the time for measuring and processing the SSBs associated with the RSs corresponding to at least one TCI in an inactive state. It should be noted that when more than one TCI is in an inactive state, the usable time of the PL-RS list is determined according to the maximum period of the associated SSBs.

[0130] Optionally, in the embodiment of the present application, when at least one TCI-CC pair among multiple uplink TCIs is in an inactive state, the time for measuring and processing SSBs should be included when determining the total time length required for the processing flow related to updating the PL-RS list. It should be noted that when more than one TCI-CC pair is in an inactive state, the usable time of the PL-RS list is determined according to the maximum period of the associated SSBs.

[0131] It should be noted that the present application does not limit the execution order of step 501 and step 202, and step 501 may be executed after step 202, or step 202 and step 501 may be executed simultaneously.

[0132] An embodiment of the present application provides a TCI status updating method, in which a UE updates a first TCI status list based on target indication information, and the updated first TCI status list is enabled after a first slot, where the first slot is determined based on the time required for the update process of the first TCI status list. In this solution, after updating the first TCI status list, the UE determines the activation time of the updated first TCI status list based on the time required for the update process of the first TCI status list, i.e., the TCI activation time can be flexibly determined based on the time required for the update process of the first TCI status list, which facilitates UE scheduling by the network side device and increases the UE's flexibility in enabling the first TCI status list, thereby avoiding a loss of uplink and downlink data transmission performance when the network side device schedules the UE.

[0133] Optionally, in an embodiment of the present application, after the above step 202, the transmission configuration indication TCI status update method according to the embodiment of the present application further includes the following step 601:

[0134] Step 601: if the updated first TCI status list has already been validated, the UE adopts the updated first TCI status list to transmit target data.

[0135] In an embodiment of the present application, the target data includes at least one of uplink and downlink scheduling information, uplink data, downlink data, and feedback information.

[0136] In an embodiment of the present application, in one case, the UE may employ the updated first TCI status list in the first slot to monitor DL / UL scheduling, transmit uplink and downlink data, and / or feedback related feedback information (e.g., ACK / NACK) based on the determined length of time required for the update processing process of the first TCI status list.

[0137] In another case, based on the determined length of time required for the update processing process of the first TCI status list, the UE may adopt the updated first TCI status list in the first slot to monitor DL / UL scheduling, transmit uplink and downlink data, and / or feedback related feedback information in one or more CCs.

[0138] It should be noted that after completing MAC CE decoding and obtaining the corresponding first TCI status list, before the first slot, the UE may use one or more TCIs in the updated first TCI status list to monitor DL / UL scheduling, transmit uplink and downlink data, and / or perform related ACK / NACK feedback.

[0139] In an embodiment of the present application, the UE can perform data transmission by adopting the updated first TCI status list in the first slot, thereby ensuring the uplink and downlink data transmission performance when the network side equipment schedules the UE.

[0140] In the following, the entire process of updating the first TCI status list will be specifically described through specific embodiments (i.e., embodiment 1 and embodiment 2).

[0141] Embodiment 1: This embodiment is a solution for a single carrier scenario. As shown in FIG. 5, the TCI status update method according to the embodiment of the present application specifically includes steps 21 to 26 as follows.

[0142] Step 21: The network side device configures a second TCI status list and a reference signal for the UE.

[0143] The network side device configures a second TCI status list (RRC list) through RRC signaling, where each TCI status indicates one or two source reference signal information of QCL relationship / QCL information, and the TCI status list includes uplink TCI, downlink TCI, or joint TCI. It should be noted that the uplink TCI and the downlink TCI are all independent TCIs. The joint TCI and the independent TCI are not collectively configured in the UE by RRC.

[0144] The network side device configures a set of reference signals and further configures QCL relationships for these reference signals based on the list of previously configured TCI states; Among various reference signal configurations, there is a reference signal, i.e., PL-RS, for determining downlink path loss and calculating uplink transmit power. Such reference signal may be associated with an uplink TCI or joint TCI, i.e., when a certain uplink TCI or joint TCI is in an activated state, the UE needs to further maintain this PL-RS. When the activated uplink TCI list changes, the corresponding path loss reference signal also changes.

[0145] Step 22, the UE performs beam measurements.

[0146] The UE performs beam measurement based on the reference signals configured in the network side device and feeds back the calculated L1-RSRP. Specifically, the UE determines the corresponding reference signal configuration based on the reporting configuration including L1-RSRP configured in the network side device, and performs L1-RSRP beam measurement on these reference signals. In particular, when performing beam measurement, the UE needs to determine downlink time-frequency synchronization and uplink / downlink beams to be used when performing these measurements and related periodic reporting based on the QCL relationship of the reference signals.

[0147] Step 23, the UE receives MAC CE signaling to obtain an instruction to update the first TCI status list.

[0148] The network side device issues an update instruction for the first TCI status list (i.e., the target indication information described in the above embodiment) through MAC CE signaling, where the update instruction includes an update instruction for uplink TCI and downlink TCI, or an update instruction for joint TCI. Here, the uplink TCI may be one or more uplink TCIs, the downlink TCI may be one or more downlink TCIs, and the joint TCI may be one or more joint TCIs. It should be noted that the joint TCI and the independent TCI are not collectively configured in the UE by RRC, and therefore one MAC CE cannot simultaneously activate the joint TCI and the independent TCI.

[0149] In particular, according to the relationship established between the uplink TCI or joint TCI and the PL-RS described in step 21 above, the update of the uplink TCI or joint TCI status list can trigger a change of the PL-RS, that is, the network side device can implicitly indicate that the PL-RS list maintained by the UE needs to be updated by changing the TCI status list.

[0150] After receiving this MAC CE signaling, the UE first demodulates the corresponding PDSCH, and then feeds back an ACK or NACK in the physical layer based on the CRC check result. Then, the UE can extract the MAC CE from the data uploaded from the physical layer to the MAC layer and resolve the TCI status information list indicated by this MAC CE.

[0151] It should be noted that before the UE completes MAC CE decoding, the UE cannot obtain any information in the first TCI status list, so the UE must perform DL / UL scheduling monitoring, uplink and downlink data transmission, and related ACK / NACK feedback, etc. based on the original first TCI status list.

[0152] Step 24, the UE determines the current state of each TCI in the first TCI state list that it intends to activate (i.e., should activate).

[0153] In this step, the UE determines the state of each TCI (1. known state) based on the currently activated first TCI state list (note that at this time, it has not yet been updated based on the information indicated by the MAC CE) and the measurement result of the reference signal described in step 22 above. State / Unknown state ,2.Activation state / Not activated ) must be determined.

[0154] When the UE determines whether a TCI is in a known state, it can do so based on the measurement results of the reference signal and whether the UE has previously performed measurement reporting of the related reference signal. The reason for defining the known state of the TCI is to address the situation where the network side device does not strictly perform steps 21 and 22 in the process of configuring and activating the TCI, but performs blind configuration based on other information. Because the UE has never performed the related measurement, i.e., has never obtained the synchronization or beam information indicated by this TCI state, additional time is required to activate the corresponding TCI state.

[0155] The UE determines whether the TCI is in an activated state, and for known TCIs, determines whether the TCI to be activated is already in the activated list, and for unknown TCIs, determines whether the QCL relationship corresponding to the TCI to be activated is related to SSB.

[0156] Step 25: The UE determines the length of the TCI update processing time (the length of time required for the first TCI status list update processing process).

[0157] Based on the state of each TCI, the UE may further determine:

[0158] 1. The total time required for the processing flow related to updating the downlink quasi-co-location associated with the downlink TCI or joint TCI. For example, when the RS indicated by the downlink quasi-co-location relationship associated with the downlink TCI is still unknown, RSRP measurement for the RS is required, and when the RS indicated by the downlink quasi-co-location relationship associated with the downlink TCI is not yet activated, the SSB associated with the RS corresponding to this TCI needs to be measured and processed first to obtain information such as related synchronization.

[0159] 2. The total time required for the processing flow related to updating the emitted spatial domain filter information associated with the uplink TCI or joint TCI, e.g., when the RS indicated by the downlink quasi-co-location relationship associated with the downlink TCI is still unknown, and L1-RSRP measurements for this RS are required.

[0160] 3. The total time required for the processing flow related to updating the maintenance list of the PL-RS (i.e., the PL-RS list), for example, when the uplink TCI corresponding to the PL-RS is not yet activated, it is necessary to measure the reference signal related to the PL-RS to obtain the RSRP value and accurate downlink path loss information. It should be noted that when the uplink TCI or joint TCI is in an unknown state, it is also necessary to determine whether the corresponding TCI state is in an activated state, and the determination criterion is determined based on the description in step 24.

[0161] Further, for the independent TCI, after determining a first time corresponding to an update of downlink quasi-co-location information associated with the downlink TCI and a second time corresponding to an update of emission spatial domain filter information associated with the uplink TCI, the independent TCI is further I's Determine the activation time to be the maximum of the two.

[0162] The flow of updating the TCI status is shown in Figure 6. It should be noted that in the process of updating the quasi-co-location relationship of the downlink TCI or joint TCI status in Figure 6, the context of the measurement of L1-RSRP and the measurement and processing of SSB is only illustrated in Figure 6 for illustrative purposes, and is not limited to the embodiments of the present application.

[0163] It is necessary to include the time required for RSRP measurement for an RS when at least one TCI among the multiple downlink TCIs is in an unknown state, where the measurement time for the RS is determined based on the period of a periodic signal associated with the unknown downlink TCI, or based on the measurement slot of a non-periodic signal associated with the unknown downlink TCI, and when more than one downlink TCI is in an unknown state, the time required for RSRP measurement for an RS is determined according to the latest arriving RS measurement occasion among all RSs associated with the multiple unknown downlink TCIs.

[0164] It is necessary to include the time required for RSRP measurement for an RS when at least one TCI among multiple uplink TCIs is in an unknown state, where the measurement time for the RS is determined based on the period of a periodic signal associated with the unknown uplink TCI or based on the measurement slot of a non-periodic signal associated with the unknown uplink TCI, and when more than one uplink TCI is in an unknown state, the time required for RSRP measurement for an RS is determined according to the latest arriving RS measurement occasion among all RSs associated with multiple unknown uplink TCIs.

[0165] When at least one TCI among multiple downlink TCIs is in an inactivated state, the time for measuring and processing the SSB associated with the RS corresponding to this TCI must be included, and when more than one TCI is in an inactivated state, the activation time of the update list is determined according to the maximum period of the associated SSBs.

[0166] When determining the total time required for the processing flow related to updating the maintenance list of the PL-RS when at least one TCI among multiple uplink TCIs is in an inactivated state, the time for measuring and processing the SSBs must be included, and when more than one TCI is in an inactivated state, the usable time of the PL-RS list is determined according to the maximum period of the associated SSBs.

[0167] It should be noted that the second slot may be different from the first slot.

[0168] Furthermore, when determining the downlink quasi-co-location for the joint TCI and updating the uplink emission spatial domain filter information, the known state of the reference signal corresponding to the joint TCI is also determined. / Unknown state and activation state / Not activated The decision is based on:

[0169] It is necessary to include the time required for RSRP measurement for an RS when at least one TCI among the multiple joint TCIs is in an unknown state, where the measurement time of the RS is determined based on the period of a periodic signal associated with the unknown joint TCI or based on the measurement slot of a non-periodic signal associated with the unknown joint TCI, and when more than one joint TCI is in an unknown state, the time required for RSRP measurement for an RS is determined according to the latest arriving RS measurement occasion among all RSs associated with the multiple unknown joint TCIs.

[0170] When determining the activation time of a joint TCI and the total time required for the processing flow related to updating the maintenance list of a PL-RS when at least one TCI among multiple joint TCIs is in an inactivated state, the time for measuring and processing the SSB related to the RS corresponding to this TCI must be included, and when more than one TCI is in an inactivated state, the activation time of the joint TCI list and the usable time of the PL-RS list are determined according to the maximum period of the associated SSBs.

[0171] The UE indicates the number of beam measurement reference signals that can be simultaneously configured by reporting its capabilities. The network side equipment determines the maximum number of unknown TCIs that can be activated based on the UE capabilities. If the number of unknown TCIs activated by the network side equipment exceeds the UE capabilities, the corresponding UE behavior is not limited in the embodiments of this application.

[0172] Step 26: Based on the determined processing time length (i.e., the time length required for the update processing process of the first TCI status list), the UE adopts the updated first TCI status list after the first slot to monitor DL / UL scheduling, transmit uplink and downlink data, and provide related ACK / NACK feedback.

[0173] It should be noted that after completing MAC CE decoding and obtaining the corresponding first TCI status list, before the first slot, the UE may use one or more TCIs in the updated first TCI status list to monitor DL / UL scheduling, transmit uplink and downlink data, and perform related ACK / NACK feedback, which is not limited in the embodiments of the present application.

[0174] Embodiment 2: This embodiment is a solution for a multi-carrier, ie, carrier aggregation scenario.

[0175] As shown in FIG. 7, the TCI status update method according to the embodiment of the present application specifically includes steps 31 to 36 as follows.

[0176] Step 31: The network side device configures a second TCI status list and a reference signal for the UE.

[0177] The network side device configures a second TCI state list (RRC list) through RRC signaling, where each TCI state indicates source reference signal information for one or two QCL-related components. The TCI state list includes an uplink TCI and a downlink TCI, or a joint TCI. For ABC-type QCL relationships, a source reference signal is configured on each CC. For D-type QCL relationships or transmit beam information, a source reference signal is configured on only one component carrier, but all CCs are enabled. This TCI state configuration is mainly for carrier aggregation within the same frequency band, i.e., an intra-band carrier aggregation scenario. In a carrier aggregation scenario, joint TCI and independent TCI are not configured collectively in the UE by RRC.

[0178] The network side device configures a set of reference signals including PL-RS. The network side device further configures a QCL relationship of these reference signals based on the list of previously configured TCI states. An association may be established between the PL-RS and an uplink TCI or a joint TCI, i.e., when an uplink TCI or a joint TCI is in an activated state, the UE also needs to maintain this PL-RS. A source reference signal on a component carrier corresponding to uplink beam information indicated by an uplink TCI or a joint TCI may be associated with a PL-RS on a different CC, respectively.

[0179] Step 32, the UE performs beam measurements.

[0180] The UE performs beam measurement based on the reference signals configured in the network side device and feeds back the calculated L1-RSRP. Specifically, the UE determines the corresponding reference signal configuration based on the reporting configuration including L1-RSRP configured in the network side device, and performs L1-RSRP beam measurement on these reference signals. In particular, when performing beam measurement, the UE needs to determine downlink time-frequency synchronization and uplink / downlink beams to be used when performing these measurements and related periodic reporting based on the QCL relationship of the reference signals.

[0181] As described in step 31 above, the ABC type QCL-related source reference signals are configured independently on each CC, and the D type QCL-related and uplink beam information are uniquely configured on a carrier within a frequency band and can be shared by all carriers within this frequency band.

[0182] Step 33, the UE receives MAC CE signaling to obtain an instruction to update the first TCI status list.

[0183] It should be noted that for the description of step 33 above, please refer to the description of step 23 in the above embodiment, and no further description will be given here.

[0184] Step 34, the UE determines the current state on each CC of each TCI in the first TCI state list to be activated.

[0185] In this step, the UE needs to determine the state of each TCI on each CC (1. known state (known or unknown), 2. activation state (already activated or not activated)) based on the currently activated first TCI state list (note that at this time it has not yet been updated based on the information indicated by the MAC CE) and the reference signal measurement results described in step 32 above.

[0186] When the UE determines whether the TCI is known on each CC, the determination can be based on the measurement results of the reference signals on each CC and whether the UE has previously performed measurement reporting for the related reference signals. Note that, according to the description of step 32 above, the reference signals on each CC themselves also form a QCL relationship, so when the UE determines whether the TCI is known on each CC, it needs to refer to the QCL relationship configuration of the reference signals on each CC to make the determination.

[0187] For example, if reference signals RS1 and RS2 are configured in CC1 and CC2, respectively, and are used as source reference signals of ABC-type QCLs on CC1 and CC2 of TCIs, respectively, when determining the known relationship between RS1 and RS2, it is found that the source reference signals of the ABC-type QCLs are the same and are all RS3. Note that RS3 may be on CC1 or CC2, or on any in-band component carrier not belonging to CC1 or CC2. Then, if RS3 is measured and reported by the UE and satisfies all the conditions for determining the known state, it is considered to be known on both CC1 and CC2 of TCIs.

[0188] Step 35: The UE determines the length of the TCI update processing time.

[0189] Based on the state of each TCI, the UE may further determine:

[0190] 1. The total time required for the processing flows related to updating the downlink quasi-co-location associated with the downlink TCI or joint TCI.

[0191] 2. The total time required for the processing flow related to updating the emitted spatial domain filter information related to the uplink TCI or joint TCI.

[0192] 3. Total time required for the processing flow related to updating the maintenance list of PL-RS.

[0193] Furthermore, for an independent TCI, after determining a time corresponding to an update of the downlink quasi-co-location associated with the downlink TCI and a time corresponding to an update of the emission spatial domain filter information associated with the uplink TCI, it is further determined that the activation time of the independent TCI list is the maximum value of the two.

[0194] To describe the known state of a TCI on each CC, we define a TCI-CC number pair (a, b), abbreviated as a TCI-CC pair. A known state on a TCI-CC number pair (a, b) is a known state on a CC b of a TCI with number a.

[0195] It is necessary to include the time required for RSRP measurement for an RS when at least one TCI-CC pair among multiple downlink TCIs is in an unknown state, where the measurement time for the RS is determined based on the period of a periodic signal associated with this TCI-CC pair, or based on the measurement slot of a non-periodic signal associated with an unknown downlink TCI on this TCI-CC pair, and when more than one TCI-CC pair is in an unknown state, the time required for RSRP measurement for an RS is determined according to the latest arriving RS measurement occasion among all RSs associated with unknown downlink TCIs on multiple TCI-CC pairs.

[0196] The time required for RSRP measurement for an RS when at least one TCI-CC pair among multiple uplink TCIs is in an unknown state must be included, where the measurement time for the RS is determined based on the period of a periodic signal associated with the unknown TCI-CC pair, or based on the measurement slot of a non-periodic signal associated with the TCI-CC pair, and when more than one TCI-CC pair is in an unknown state, the time required for RSRP measurement for an RS is determined according to the latest arriving RS measurement occasion among all RSs associated with multiple TCI-CC pairs.

[0197] When at least one TCI-CC pair among multiple downlink TCIs is in an inactivated state, the time for measuring and processing the SSB associated with the RS corresponding to this TCI-CC pair must be included, and when more than one TCI-CC pair is in an inactivated state, the activation time of the update list is determined according to the maximum period of the associated SSBs.

[0198] When at least one TCI-CC pair among multiple uplink TCIs is in an inactivated state, determining the total time required for the processing flow related to updating the maintenance list of the PL-RS must include the time for measuring and processing the SSBs, and when more than one TCI-CC pair is in an inactivated state, determining the usable time of the PL-RS list according to the maximum period of the associated SSBs.

[0199] In a multi-carrier scenario, the number of TCI-CC pairs is relatively large, and therefore the probability of unknown TCI-CC pairs appearing is also relatively large. The UE indicates the number of beam measurement reference signals that can be simultaneously configured by reporting its capabilities. The network side equipment determines the maximum number of unknown TCI-CC pairs that can be activated based on the UE capabilities. If the number of unknown TCI-CC pairs activated by the network side equipment exceeds the UE capabilities, the corresponding UE behavior is not limited in the embodiments of this application.

[0200] Step 36: Based on the determined processing time length, the UE employs the updated first TCI status list in the first slot to monitor DL / UL scheduling, transmit uplink and downlink data, and provide related ACK / NACK feedback in one or more CCs.

[0201] It should be mentioned that for the TCI state updating method according to the embodiment of the present application, the execution body may further be a TCI state updating device or a control module for executing the TCI state updating method in the TCI state updating device.

[0202] 8 shows a possible structural schematic diagram of a TCI state updating device according to an embodiment of the present application. As shown in FIG. 8, the TCI state updating device 40 may include an acquiring module 41 and an updating module 42.

[0203] Here, the acquisition module 41 is used to acquire target indication information, and the update module 42 is used to update the first TCI status list based on the target indication information acquired by the acquisition module 41, where the updated first TCI status list is enabled after a first slot, and this first slot is determined based on the length of time required for the update processing process of the first TCI status list.

[0204] In one possible implementation manner, the first TCI status list includes any one of an independent TCI and at least one joint TCI, where 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 of uplink transmission, the downlink TCI is used to indicate downlink QCL information of downlink transmission, and the joint TCI is used to indicate downlink QCL information of downlink transmission. information and is used to indicate uplink beam information for uplink transmission.

[0205] In one possible implementation, the first slot is determined based on the maximum value of a first time length and a second time length, where the first time length is the time length required for the update processing process of at least one uplink TCI, and the second time length is the time length required for the update processing process of at least one downlink TCI.

[0206] In one possible implementation, the first time length is determined based on the state of at least one uplink TCI, and the second time length is determined based on the state of at least one downlink TCI, where the state is one of a known state, an unknown state, an activated state, and an inactivated state.

[0207] In one possible implementation manner, when at least one uplink TCI is in an unknown state, the first time length includes a time length required for the UE to measure a target parameter for a first reference signal, and when at least one downlink TCI is in an unknown state, the second time length includes a time length required for the UE to measure a target parameter for a second reference signal, where 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.

[0208] In one possible implementation manner, when at least one uplink TCI is in an inactivated state, the first time length includes a time length required for the UE to measure an SSB associated with a third reference signal, or when at least one downlink TCI is in an inactivated state, the second time length includes a time length required for the UE to measure an SSB associated with a fourth reference signal, where the third reference signal is a reference signal associated with an uplink TCI in an inactivated state and the fourth reference signal is a reference signal associated with a downlink TCI in an inactivated state.

[0209] In one possible implementation manner, the first time length or the second time length is determined based on the status of the TCI on each of the multiple carriers in the first TCI status list, and the status of the TCI on each of the carriers in the first TCI status list is determined based on measurement results of the fifth reference signal on each carrier.

[0210] In one possible implementation manner, when the first TCI status list contains a TCI whose status on at least one carrier is unknown, the first time length or the second time length includes the time length required for the UE to measure target parameters for a first reference signal group, which is determined based on a second reference signal group, and which is a sixth reference signal indicated on all carriers by all TCIs in the first TCI status list.

[0211] In one possible implementation, the first slot is determined based on a third time length, which is a time length required for at least one joint TCI update process.

[0212] In one possible implementation, the third time length is determined based on the state of at least one joint TCI, which state is one of a known state, an unknown state, an activated state, and an inactivated state.

[0213] In one possible implementation manner, when at least one joint TCI is in an unknown state, the third time length includes a time length required for the UE to measure a target parameter for a seventh reference signal, and when at least one joint TCI is in an inactivated state, the third time length includes a time length required for the UE to measure an SSB associated with an eighth reference signal, where the seventh reference signal is a reference signal associated with a joint TCI in an unknown state and the eighth reference signal is a reference signal associated with a joint TCI in an inactivated state.

[0214] In one possible implementation, the third time length is determined based on the status of each of the multiple carriers of the TCI in the first TCI status list, and the status of each of the TCIs in the first TCI status list is determined based on measurement results of the eighth reference signal on each carrier.

[0215] In one possible implementation manner, when the first TCI status list contains a TCI whose status on at least one carrier is unknown, the third time length includes the time length required for the UE to measure target parameters for a first reference signal group, which is determined based on a second reference signal group, and which is a ninth reference signal indicated on all carriers by all TCIs in the first TCI status list.

[0216] In one possible implementation manner, the TCI status updating device according to the embodiment of the present application further includes a determination module, which is used to determine the maximum number of reference signals in the first reference signal group based on the first UE capability information before the acquisition module 41 acquires the target indication information.

[0217] In one possible implementation manner, the TCI in the first TCI status list is used to indicate at least one of first type QCL information on each of the UE's N carriers, D type QCL information on the N carriers, and uplink beam information, where the first type QCL information includes A type QCL information, B type QCL information, and C type QCL information, and N is an integer greater than or equal to 1.

[0218] In one possible implementation manner, the update module 42 is further used to update the PL-RS list based on the target indication information after the acquisition module 41 acquires the target indication information, where the updated PL-RS list is enabled after the second slot.

[0219] In one possible implementation manner, the acquisition module 41 is specifically used to receive MAC CE signaling sent by the network side device, where the MAC CE signaling includes target indication information.

[0220] In one possible implementation manner, the TCI status updating device according to the embodiment of the present application further includes a receiving module, which is used to receive target configuration information sent by the network side equipment before the acquiring module 41 acquires the target indication information, and the target configuration information is used to configure a second TCI status list and a reference signal set for the UE, and the TCIs in the second TCI status list are used to indicate source reference signal information of at least one QCL.

[0221] In one possible implementation manner, the TCI status updating device according to the embodiment of the present application further includes a transmitting module, which is used to adopt the updated first TCI status list to transmit target data when the updated first TCI status list has been enabled after the updating module 42 updates the first TCI status list based on the target indication information, where the target data includes at least one of uplink and downlink scheduling information, uplink data, downlink data, and feedback information.

[0222] An embodiment of the present application provides a TCI status updating device, which, after updating a first TCI status list, can determine the activation time of the updated first TCI status list based on the length of time required for the update processing process of the first TCI status list. That is, the TCI activation time can be flexibly determined based on the length of time required for the update processing process of the first TCI status list, which facilitates UE scheduling by the network side equipment and also increases the flexibility of UE activation of the first TCI status list, thereby avoiding loss of uplink and downlink data transmission performance when the network side equipment schedules the UE.

[0223] The TCI status update device in the embodiment of the present application may be a UE, for example, a UE having an operating system, or may be a component in the UE, for example, an integrated circuit or a chip. The UE may be a terminal or other device other than a terminal. For example, the UE may include, but is not limited to, the types of UE 11 listed above. The other device may be a server, a network-attached storage (NAS), etc., and the embodiment of the present application is not specifically limited thereto.

[0224] The TCI status update device according to the embodiment of the present application can implement each process implemented by the UE in the above method embodiment and achieve the same technical effect, and will not be further described here to avoid repetition.

[0225] 9 shows one possible structural schematic diagram of a TCI status updating device according to an embodiment of the present application. As shown in FIG. 9, the TCI status updating device 50 may include: a sending module 51.

[0226] Here, the transmitting module 51 is used to transmit target indication information to the UE, and the target indication information is used by the UE to update the first TCI status list, where the updated first TCI status list is enabled after a first slot, and the first slot is determined based on the length of time required for the update processing process of the first TCI status list.

[0227] In one possible implementation manner, the target indication information is further used by the UE to update the PL-RS list, where the updated PL-RS list is enabled after the second slot.

[0228] In one possible implementation manner, the sending module 51 is specifically used to send MAC CE signaling to the UE, and the MAC CE signaling includes target indication information.

[0229] In one possible implementation manner, the transmitting module 51 is further used to transmit target configuration information to the UE before transmitting target indication information to the UE, and the target configuration information is used to configure a second TCI status list and a reference signal set for the UE, and the TCIs in the second TCI status list are used to indicate source reference signal information of at least one QCL.

[0230] An embodiment of the present application provides a TCI status updating device, which, after updating a first TCI status list, can determine the activation time of the updated first TCI status list based on the length of time required for the update processing process of the first TCI status list. That is, the TCI activation time can be flexibly determined based on the length of time required for the update processing process of the first TCI status list, which facilitates UE scheduling by the network side equipment and also increases the flexibility of UE activation of the first TCI status list, thereby avoiding loss of uplink and downlink data transmission performance when the network side equipment schedules the UE.

[0231] The TCI status update device according to the embodiment of the present application can implement each process implemented by the network side equipment in the above method embodiment and achieve the same technical effects, and will not be further described here to avoid repetition.

[0232] Optionally, as shown in Figure 10, an embodiment of the present application further provides a communication device 5000, including a processor 5001 and a memory 5002, wherein the memory 5002 stores a program or instruction that can run on the processor 5001. For example, if the communication device 5000 is a UE, when the program or instruction is executed by the processor 5001, it can realize each step of the above-mentioned UE-side method embodiment and achieve the same technical effect. If the communication device 5000 is a network-side device, when the program or instruction is executed by the processor 5001, it can realize each step of the above-mentioned network-side device method embodiment and achieve the same technical effect, and in order to avoid repetition, it will not be described further here.

[0233] An embodiment of the present application further provides a UE including a processor and a communication interface, wherein the processor ,TaThe UE obtains target indication information and updates the first TCI status list based on the target indication information, where the updated first TCI status list is enabled after a first slot, and the first slot is determined based on the time required for the first TCI status list update process. This UE embodiment corresponds to the above-mentioned UE-side method embodiment, and the implementation processes and realization modes of the above-mentioned method embodiment can all be applied to this UE embodiment, and the same technical effects can be achieved. Specifically, Figure 11 is a schematic diagram of a hardware structure for realizing a UE in the embodiment of the present application.

[0234] The UE 700 includes at least some components such as, but not limited to, a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, and a processor 710.

[0235] As will be understood by those skilled in the art, the UE 700 may further include a power source (e.g., a battery) for powering each component, and the power source may be logically connected to the processor 710 by a power management system, thereby enabling the power management system to realize functions such as charge / discharge management and power consumption management. The UE structure shown in Figure 11 does not constitute a limitation on the UE, and the UE may include more or fewer components than those shown, or a combination of some components, or a different arrangement of components, which will not be further described herein.

[0236] It should be understood that in the embodiment of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042, and the graphics processor 7041 processes image data of still or video images captured by an image capture device (e.g., a camera) in a video capture mode or an 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 two parts: a touch detection device and a touch controller. The other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control buttons, switch buttons, etc.), a trackball, a mouse, and a control lever, which will not be further described herein.

[0237] In the embodiment of the present application, the radio frequency unit 701 can receive downlink data from the network side device and then transmit the data to the processor 710 for processing, and can also transmit uplink data to the network side device. Generally, the radio frequency unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0238] The memory 709 may be used to store software programs or instructions and various data. The memory 709 may include a first storage area in which programs or instructions are primarily stored and a second storage area in which data is stored. The first storage area may store an operating system, an application program or instructions required for at least one function (e.g., an audio playback function, an image playback function, etc.), etc. The memory 709 may include volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile 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 may 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 Rambus random access memory (DRRAM). Memory 709 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

[0239] The processor 710 may include one or more processing units. Optionally, the processor 710 may integrate an application processor and a modem processor, where the application processor mainly processes operations related to the operating system, user interface, application programs, etc., and the modem processor mainly processes wireless communication signals, e.g., a baseband processor. As can be appreciated, the modem processor may not be integrated into the processor 710.

[0240] Here, the processor 710 is used by the UE to obtain target indication information and update the first TCI status list based on the target indication information, where the updated first TCI status list is enabled after a first slot, and this first slot is determined based on the length of time required for the update processing process of the first TCI status list.

[0241] An embodiment of the present application provides a UE, which is capable of updating a first TCI status list based on target indication information, and the updated first TCI status list is enabled after a first slot, where the first slot is determined based on the time 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 activation time of the updated first TCI status list based on the time required for the update process of the first TCI status list, i.e., the TCI activation time can be flexibly determined based on the time required for the update process of the first TCI status list, which facilitates UE scheduling by the network side device and increases the flexibility of UE activation of the TCI status list, thereby avoiding loss of uplink and downlink data transmission performance when the network side device schedules the UE.

[0242] The UE according to the embodiments of the present application can implement each process implemented by the UE in the above method embodiments and achieve the same technical effects, and in order to avoid repetition of description, they will not be further described here.

[0243] An embodiment of the present application further provides a network side device, including a processor and a communication interface, where the communication interface is used to send target indication information to the UE, and the target indication information is used by the UE to update a first TCI status list, where the updated first TCI status list is enabled after a first time slot, and the first time slot is determined based on a time length required for the update processing process of the first TCI status list. This embodiment of the network side device corresponds to the embodiment of the method of the above-mentioned network side device, and each implementation process and realization manner of the embodiment of the method can be applied to this embodiment of the network side device, and the same technical effects can be achieved.

[0244] Specifically, an embodiment of the present application further provides a network side device. As shown in Fig. 12, the network side device 600 includes an antenna 61, a radio frequency device 62, a baseband device 63, a processor 64, and a memory 65. The antenna 61 and the radio frequency device 62 are connected. In the uplink direction, the radio frequency 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 transmits it to the radio frequency device 62, and the radio frequency device 62 processes the received information and then transmits it through the antenna 61.

[0245] The methods performed by the network side equipment in the above embodiments may be implemented in a baseband device 63, which includes a baseband processor.

[0246] Here, the radio frequency device 62 is used to transmit target indication information to the UE, and this target indication information is used by the UE to update the first TCI status list, where the updated first TCI status list is enabled after a first slot, and this first slot is determined based on the length of time required for the update processing process of the first TCI status list.

[0247] An embodiment of the present application provides a network-side device, which can update a first TCI status list according to target indication information, and the updated first TCI status list is enabled after a first slot, where the first slot is determined based on the time required for the update process of the first TCI status list. UE After updating the first TCI status list, the activation time of the updated first TCI status list can be determined based on the length of time required for the update processing process of the first TCI status list, i.e., the TCI activation time can be flexibly determined based on the length of time required for the update processing process of the first TCI status list, which facilitates UE scheduling by the network side equipment and also increases the flexibility of UE activation of the TCI status list, thereby avoiding loss of uplink and downlink data transmission performance when the network side equipment schedules the UE.

[0248] The network side equipment according to the embodiments of the present application can implement each process implemented by the network side equipment in the above method embodiments and achieve the same technical effects, and will not be further described here to avoid repetition.

[0249] The baseband device 63 may include, for example, at least one baseband board, on which multiple chips are installed, and as shown in FIG. 12, one of the chips is, for example, a baseband processor, which is connected to a memory 65 via a bus interface, calls a program in the memory 65, and performs the network equipment operations shown in the above method embodiments.

[0250] The network side equipment may further include a network interface 66, which may be, for example, a common public radio interface (CPRI).

[0251] Specifically, the network side device 600 of the embodiment of the present application further includes instructions or programs stored in the memory 65 and operable on the processor 64, and the processor 64 can call the instructions or programs in the memory 65 to execute the methods performed by each module shown in FIG. 9 and achieve the same technical effects, which will not be further described here to avoid repetition.

[0252] The embodiments of the present application further provide a readable storage medium, which stores a program or instruction, and when the program or instruction is executed by a processor, it can realize each process of the above method embodiments and achieve the same technical effect, and in order to avoid repetition of description, it will not be further described here.

[0253] Here, the processor is the processor in the communication device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0254] The embodiments of the present application further provide a chip, the chip including a processor and a communication interface, the communication interface coupled to the processor, the processor running a program or instruction, used to realize each process of the above method embodiments, and can achieve the same technical effect, and in order to avoid repetition of description, it will not be further described here.

[0255] It should be understood that the chips referred to in the embodiments of this application may be referred to as system level chips, system chips, chip systems, or system-on-chips.

[0256] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium, and which can be executed by at least one processor to realize each process of the above method embodiments and achieve the same technical effects, and will not be further described here to avoid repetition.

[0257] An embodiment of the present application further provides a communication system including a UE and a network side device, wherein the UE may be used to perform steps of the TCI status updating method described above, and the network side device may be used to perform steps of the TCI status updating method described above.

[0258] It should be noted that, in this specification, the terms "comprise," "include," "includes," or any other variations thereof are intended to cover the non-exclusive "comprise," whereby a process, method, article, or apparatus comprising a set of elements not only includes those elements, but also other elements not expressly listed or inherent in such process, method, article, or apparatus. Absent further limitations, an element defined by the phrase "comprises one of" does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising that element. 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 include performing functions in an essentially simultaneous manner or in the reverse order based on the functions involved. For example, the described method may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to some examples may be combined in other examples.

[0259] As will be apparent to those skilled in the art from the above description of the embodiments, the methods of the above embodiments can be realized in the form of software and a necessary general-purpose hardware platform. Of course, they can also be realized in hardware, but in many cases the former is a more preferred embodiment. Based on this understanding, the technical proposal of the present application, in substance or in part contributing to the prior art, may be embodied in the form of a computer software product, which is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes a number of instructions for causing a terminal (which may be a mobile phone, computer, server, air conditioner, network device, etc.) to execute the methods described in each embodiment of the present application.

[0260] Although the embodiments of the present application have been described above in conjunction with the drawings, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not limiting. Those skilled in the art can take the teachings of the present application into account and implement many forms without departing from the spirit and scope of the claims, all of which fall within the scope of protection of the present application.

[0261] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority from Chinese Patent Application No. 202210016552.6, filed in China on January 7, 2022, the entire contents of which are incorporated herein by reference.

Claims

1. A transmission configuration indication (TCI) status update method, comprising: A user equipment (UE) obtains target indication information; The UE updates a first TCI status list based on the target indication information, wherein the updated first TCI status list is enabled after a first slot, and the first slot is determined based on a time length required for an update process of the first TCI status list; Wherein the first TCI status list includes any one of an 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 of uplink transmission, the downlink TCI is used to indicate downlink quasi-co-location QCL information of downlink transmission, and the joint TCI is used to indicate downlink QCL information of downlink transmission and uplink beam information of uplink transmission; the first slot is determined based on a maximum value of a first time length and a second time length, the first time length being a time length required for an update process of the at least one uplink TCI, and the second time length being a time length required for an update process of the at least one downlink TCI; or the first slot is determined based on a third time length, the third time length being a time length required for an update process of the at least one joint TCI. Transmission Configuration Indication TCI State Update Method.

2. the first time length is determined based on a state of the at least one uplink TCI, the second time length is determined based on a state of the at least one downlink TCI, or the third time length is determined based on a state of the at least one joint TCI; wherein the state is one of a known state, an unknown state, an activated state, and an unactivated state.

2. The method for updating a transmission configuration indication (TCI) status according to claim 1.

3. When an unknown uplink TCI exists in the at least one uplink TCI, the first time length includes a time length required for the UE to measure a target parameter for a first reference signal; When an unknown downlink TCI exists in the at least one downlink TCI, the second time length includes a time length required for the UE to measure a target parameter for a second reference signal; wherein the first reference signal is a reference signal associated with an uplink TCI in an unknown state, and the second reference signal is a reference signal associated with a downlink TCI in an unknown state.

3. The method for updating a transmission configuration indication (TCI) status according to claim 2.

4. When the at least one uplink TCI is in an inactive state, the first time length includes a time length required for the UE to measure a synchronization signal block (SSB) associated with a third reference signal, or When the at least one downlink TCI is in an inactive state, the second time length includes a time length required for the UE to measure an SSB associated with a fourth reference signal; wherein the third reference signal is a reference signal associated with an uplink TCI in an inactivated state, and the fourth reference signal is a reference signal associated with a downlink TCI in an inactivated state.

3. The method for updating a transmission configuration indication (TCI) status according to claim 2.

5. the first duration or the second duration is determined based on a state on each carrier among a plurality of carriers of the TCI in the first TCI status list; The state of each carrier of the TCI in the first TCI state list is determined based on a measurement result of a fifth reference signal on each carrier; When the first TCI status list includes a TCI whose status on at least one carrier is unknown, the first time length or the second time length includes a time length required for the UE to measure a target parameter for a first reference signal group, the first reference signal group being determined based on a second reference signal group, and the second reference signal group being a sixth reference signal indicated on all carriers by all TCIs in the first TCI status list.

2. The method for updating a transmission configuration indication (TCI) status according to claim 1.

6. when an unknown joint TCI exists in the at least one joint TCI, the third time length includes a time length required for the UE to measure a target parameter for a seventh reference signal; When the at least one joint TCI is in an inactive state, the third time length includes a time length required for the UE to measure an SSB associated with an eighth reference signal; wherein the seventh reference signal is a reference signal associated with a joint TCI in an unknown state, and the eighth reference signal is a reference signal associated with a joint TCI in a deactivated state.

3. The method for updating a transmission configuration indication (TCI) status according to claim 2.

7. the third time length is determined based on a state on each carrier among a plurality of carriers of the TCI in the first TCI state list; the state of each carrier of the TCI in the first TCI state list is determined based on a measurement result of an eighth reference signal on each carrier; When the first TCI status list includes a TCI whose status on at least one carrier is unknown, the third time length includes a time length required for the UE to measure a target parameter for a first reference signal group, the first reference signal group being determined based on a second reference signal group, and the second reference signal group being a ninth reference signal indicated on all carriers by all TCIs in the first TCI status list.

2. The method for updating a transmission configuration indication (TCI) status according to claim 1.

8. Before the UE obtains target indication information, the transmission configuration indication TCI status update method includes: and determining, by the UE, a maximum number of reference signals in the first reference signal group based on the first UE capability information.

6. The method for updating a transmission configuration indication (TCI) status according to claim 5.

9. The TCI in the first TCI status list is used to indicate at least one of first-type QCL information on each carrier among the N carriers of the UE, D-type QCL information on the N carriers, and uplink beam information, where the first-type QCL information includes A-type QCL information, B-type QCL information, and C-type QCL information, and N is an integer greater than or equal to 1.

2. The method for updating a transmission configuration indication (TCI) status according to claim 1.

10. After the UE obtains the target indication information, the transmission configuration indication TCI status updating method includes: The method further includes: updating a path loss reference signal (PL-RS) list by the UE based on the target indication information, wherein the updated PL-RS list is enabled after a second slot; Or, The UE obtaining the target indication information includes: The method includes the UE receiving a media access control (MAC) CE signaling sent by a network side device, the MAC CE signaling including the target indication information; Or, Before the UE obtains target indication information, the transmission configuration indication TCI status update method includes: The method further includes the UE receiving target configuration information sent by a network side device, the target configuration information being used to configure a second TCI status list and a reference signal set for the UE, and the TCIs in the second TCI status list being used to indicate source reference signal information of at least one QCL. Or, After the UE updates the first TCI status list according to the target indication information, the transmission configuration indication TCI status updating method includes: The method further includes, when the updated first TCI status list has already been enabled, the UE adopting the updated first TCI status list to transmit target data, wherein the target data includes at least one of uplink and downlink scheduling information, uplink data, downlink data, and feedback information.

2. The method for updating a transmission configuration indication (TCI) status according to claim 1.

11. A transmission configuration indication (TCI) status update method, comprising: the network side equipment sending target indication information to the user equipment (UE), the target indication information being used by the UE to update a first TCI status list, wherein the updated first TCI status list is enabled after a first slot, and the first slot is determined based on a time length required for an update processing process of the first TCI status list; Wherein the first TCI status list includes any one of an 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 of uplink transmission, the downlink TCI is used to indicate downlink quasi-co-location QCL information of downlink transmission, and the joint TCI is used to indicate downlink QCL information of downlink transmission and uplink beam information of uplink transmission; the first slot is determined based on a maximum value of a first time length and a second time length, the first time length being a time length required for an update process of the at least one uplink TCI, and the second time length being a time length required for an update process of the at least one downlink TCI; or the first slot is determined based on a third time length, the third time length being a time length required for an update process of the at least one joint TCI. Transmission Configuration Indication TCI State Update Method.

12. the first time length is determined based on a state of the at least one uplink TCI, the second time length is determined based on a state of the at least one downlink TCI, or the third time length is determined based on a state of the at least one joint TCI; wherein the state is one of a known state, an unknown state, an activated state, and an unactivated state. The transmission configuration indication (TCI) status update method according to claim 11.

13. When an unknown uplink TCI exists in the at least one uplink TCI, the first time length includes a time length required for the UE to measure a target parameter for a first reference signal; When an unknown downlink TCI exists in the at least one downlink TCI, the second time length includes a time length required for the UE to measure a target parameter for a second reference signal; wherein the first reference signal is a reference signal associated with an uplink TCI in an unknown state, and the second reference signal is a reference signal associated with a downlink TCI in an unknown state. The transmission configuration indication (TCI) status update method according to claim 12.

14. When the at least one uplink TCI is in an inactive state, the first time length includes a time length required for the UE to measure a synchronization signal block (SSB) associated with a third reference signal, or When the at least one downlink TCI is in an inactive state, the second time length includes a time length required for the UE to measure an SSB associated with a fourth reference signal; wherein the third reference signal is a reference signal associated with an uplink TCI in an inactivated state, and the fourth reference signal is a reference signal associated with a downlink TCI in an inactivated state. The transmission configuration indication (TCI) status update method according to claim 12.

15. When the at least one joint TCI has an unknown state, the third time length includes a time length required for the UE to measure a target parameter for a seventh reference signal; When the at least one joint TCI is in an inactive state, the third time length includes a time length required for the UE to measure an SSB associated with an eighth reference signal; wherein the seventh reference signal is a reference signal associated with a joint TCI in an unknown state, and the eighth reference signal is a reference signal associated with a joint TCI in a deactivated state. The transmission configuration indication (TCI) status update method according to claim 12.

16. The target indication information is further used by the UE to update a path loss reference signal (PL-RS) list, where the updated PL-RS list is enabled after a second slot. The transmission configuration indication (TCI) status update method according to claim 11.

17. The network side device sending target indication information to the UE includes: The network side device sends a media access control (MAC) CE signaling to the UE, and the MAC CE signaling includes the target indication information; Or, Before the network side device sends target indication information to the UE, the transmission configuration indication TCI status updating method includes: The method further includes the network side device sending target configuration information to the UE, wherein the target configuration information is used to configure a second TCI state list and a reference signal set for the UE, and the TCI in the second TCI state list is used to indicate source reference signal information of at least one QCL. The transmission configuration indication (TCI) status update method according to claim 11.

18. 11. A user equipment (UE) comprising: a processor; a memory; and a program or instructions stored in the memory and operable to run on the processor, the program or instructions, when executed by the processor, implementing the steps of a transmission configuration indication (TCI) status updating method according to any one of claims 1 to 10.

19. A network side device comprising a processor, a memory, and a program or instructions stored in the memory and operable on the processor, the network side device realizing the steps of a transmission configuration indication TCI state update method according to any one of claims 11 to 17 when the program or instructions are executed by the processor.

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