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

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 to transmit uplink and downlink data. 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 the uplink and downlink data transmission performance when the network side device schedules the UE. However, how the UE determines the TCI activation time is a problem that needs to be solved 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, apparatus, 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 updating 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 an 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 for acquiring target indication information, and the update module is used for updating a first TCI status list based on the target indication information acquired by the acquisition module, 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 an update processing process of the first TCI status list.

[0006] According to a third aspect, there is provided a TCI status updating method, the method including: a network side device sending target indication information to a UE, the target indication information being used by the UE to update a first TCI 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.

[0007] According to a fourth aspect, there is provided a TCI status updating apparatus, the apparatus including: a transmitting module, the transmitting module is used for transmitting 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, the first slot being determined based on a time length required for an update processing process of the first TCI status list.

[0008] According to a fifth aspect, there is provided a 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 steps of the method of the first aspect.

[0009] According to a sixth aspect, a UE is provided that includes a processor and a communication interface, wherein the processor is used by the UE to acquire target indication information and update 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 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 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, realising 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 for transmitting 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 equipment, wherein the UE may be used to perform steps of the TCI status updating method described in the first aspect, and the network side equipment 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, when executed by a processor, performing steps of the method according to the first aspect or performing steps of the method according to the third aspect.

[0014] According to an eleventh aspect, there is provided a chip, the chip including a processor and a communication interface, the communication interface coupled to the processor, the processor running a program or instructions 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 in a storage medium, and the computer program / program product being executed by at least one processor to realize steps of the TCI status updating method described in the first aspect, or to realize steps of the TCI status updating method described in the third aspect. Effect of the Invention

[0016] In an embodiment of the present application, the UE can update the first TCI status list according to the target indication information, and the updated first TCI status list is enabled after a first slot, which is determined based on a time length required for the update processing process of the first TCI status list. In this solution, after updating the first TCI status list, the UE can determine the enable time of the updated first TCI status list based on a time length required for the update processing process of the first TCI status list, that is, the TCI enable time can be flexibly determined based on the time length required for the update processing process of the first TCI status list, which facilitates the network side device to schedule the UE and also increases the flexibility of the UE to enable the TCI status list, thereby avoiding loss of uplink and downlink data transmission performance when the network side device schedules the UE. [Brief description of the drawings]

[0017] [Figure 1] 1 is a schematic architecture diagram of a wireless communication system according to an embodiment of the present application; [Diagram 2]1 is a schematic diagram of a TCI status update method according to an embodiment of the present application; [Diagram 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 schematic diagram of a TCI status update method according to an embodiment of the present application; [Diagram 5] FIG. 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 flow chart of a TCI status update according to an embodiment of the present application. [Figure 7] FIG. 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] FIG. 2 is a hardware structural schematic diagram of a communication device according to an embodiment of the present application; [Figure 11] 2 is a schematic diagram of a hardware structure of a UE according to an embodiment of the present application; [Figure 12] FIG. 2 is a schematic diagram of the hardware structure of a network side device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[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 are all within the scope of protection of the present application.

[0019] The terms "first," "second," etc. in the specification and claims of the present application are intended to distinguish between similar objects and are not intended to describe a particular order or sequence. It is to be understood that the terms so used are interchangeable where appropriate, such that the embodiments of the present application may be performed in an order other than that shown or described herein, and that the objects distinguished by "first" and "second" are generally of the same type and do not limit the number of objects, e.g., the first object may be one or more. It is to be noted that "and / or" in the specification and claims represents at least one of the objects connected, and the character " / " generally represents 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 techniques described may be used in the above-mentioned systems and radio technologies, or in 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 description below, 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 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 terminal (PUE), a smart home (home equipment having a wireless communication function, such as a refrigerator, a television, a washing machine, or furniture), a game console, a personal computer (PC), a deposit machine, or a self-service machine, and the wearable device includes 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 clothing, 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 12 may be called a radio access network equipment, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network unit.The access network equipment 12 may include 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 suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to a specific technical term, and it should be explained that in the embodiments of the present application, only base stations in an NR system are introduced as examples, and the specific type of the base station is not limited.

[0022] In the following, 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 will be explained.

[0023] Carrier Aggregation (CA): To meet the requirements of increasing the peak rate of a single user and the system capacity, the most direct way is to increase the system transmission bandwidth. Therefore, a technology for increasing the transmission bandwidth, namely CA, is introduced. The CA technology can aggregate 2 to 5 LTE component carriers (CCs) and realize a transmission bandwidth of up to 100 MHz, effectively improving the uplink and downlink transmission rates. The CA function can support continuous or non-continuous carrier aggregation, and the maximum resource that each carrier can use is 110 RBs. Each user uses an independent Hybrid Automatic Repeat Request (HARQ) entity on each carrier, and each transmission block can only be mapped to one specific carrier. The Physical Downlink Control Channels (PDCCHs) on each carrier are independent of each other, and the PDCCHs of each carrier can be used to allocate resources to 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 application scenarios thereof in conjunction with the drawings.

[0025] Currently, for a scenario of separate TCI, 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 even 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 the scenario in which each carrier has an independent TCI configuration in a multi-carrier scenario. Since a specific channel on each carrier, such as PDSCH, PDCCH, Physical Uplink Shared Channel (PUSCH), etc., may have an independent TCI or beam-related (Spatial Relation, SR) activation time, the uplink and downlink are obviously independent. The conventional solution leads to the following problems:

[0027] 1. The activation time of the downlink 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 is not necessarily activated. As a result, the TCI brings an unclear time period to the network scheduling, which may cause the network or UE to be unable to properly identify the cause of the transmission problem, and may further affect the network's further 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 time of uplink beam switching is earlier than the time of downlink beam switching, so the uplink and downlink beams of the UE are not consistent, which affects the 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 can update the first TCI status list according to the target indication information, and the updated first TCI status list is enabled after a first slot, which is determined based on a time length required for the update processing process of the first TCI status list. In this solution, after updating the first TCI status list, the UE can determine the enable time of the updated first TCI status list based on a time length required for the update processing process of the first TCI status list, that is, the TCI enable time can be flexibly determined based on the time length required for the update processing process of the first TCI status list, which facilitates the network side device to schedule the UE and also increases the flexibility of the UE to enable 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 Fig. 2 shows a flowchart of a transmission configuration indication TCI status update according to an embodiment of the present application. As shown in Fig. 2, the transmission configuration indication 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 an embodiment of the present application, as shown in FIG. 3 in combination 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, combining with FIG. 2, 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: a network side device sends target configuration information to a 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 according to the already configured second TCI status list. Among various reference signal configurations, there is a reference signal for determining downlink path loss and calculating uplink transmission power, namely a Pathloss Reference Signal (PL-RS). An association may be established between such a reference signal and an uplink TCI or a joint TCI, i.e., when a certain uplink TCI or a joint TCI is in an activated state, the UE needs to further maintain this PL-RS, and 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 can first demodulate the corresponding PDSCH, and based on the check status of a Cyclic Redundancy Check (CRC), feed back an acknowledgement (ACK) or non-acknowledgement (NACK) in the physical layer, and then 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 before the UE completes MAC CE decoding, the UE cannot obtain any information in the first TCI status list, so the UE can perform downlink (DL) / uplink (UL) scheduling monitoring, uplink and downlink data transmission, and related ACK / NACK feedback based on the original first TCI status list.

[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 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.

[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 required for the process 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, which requires measurement of target parameters for this reference signal.

[0055] (2) The total time length required for the process flow related to updating the downlink quasi-co-location associated with the downlink TCI or the joint TCI, for example, when a reference signal indicated by the downlink quasi-co-location relationship associated with the downlink TCI is still unknown, it is necessary to measure a target parameter for the reference signal, and when a reference signal indicated by the downlink quasi-co-location relationship associated with the 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 and other information.

[0056] (3) The total time length required for the process flow related to updating the PL-RS list. For example, when the uplink TCI corresponding to the PL-RS is not yet in an activated state, it is necessary to measure the reference signal related to the PL-RS to obtain the target parameter value and obtain 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 still 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 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 of downlink transmission and uplink beam information of uplink transmission.

[0058] Optionally, in an embodiment of the present application, the network side device can issue a TCI status update indication (i.e., target indication information) by the MAC CE, and the TCI status update indication includes an uplink TCI and a downlink TCI, or includes an update of 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 mentioned that the joint TCI and the independent TCI are not collectively configured in the UE by the RRC, so 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, the first time length being a time length required for an update processing process of at least one uplink TCI, and the second time length being a time length required for an 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, the UE can determine the activation time of the new first TCI status list based on the later value of the two update times, and the UE can determine the update time of the PL-RS based on the status of the uplink TCI.

[0062] Optionally, in an embodiment of the present application, the first time length is determined based on a state of at least one uplink TCI, and the second time length 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 the 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, the determination can be based on the measurement results of the reference signal and whether the UE has ever performed a measurement report of the associated reference signal.

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

[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, may determine based on whether the TCI to be activated is already in the activated list, and for a TCI in an unknown state, may determine based on whether the QCL relationship corresponding to the TCI to be activated is related to an 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 a time length required for the UE to measure a target parameter for a 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 explained that the above-mentioned first reference signal related to the TCI can be the source reference signal of the QCL-related or launch beam information indicated by the TCI, or can be another reference signal that is in a QCL-related chain with the source reference signal. In a QCL-related chain, the target reference signal of the QCL-related chain 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 needs to include the time required for target parameter measurement for a first reference signal, where the measurement time of the first reference signal is determined based on the period of a periodic signal associated with the uplink TCI in this unknown state, or is determined 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 a first reference signal is determined according to the measurement occasion of the last arriving 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 multiple downlink TCIs is in an unknown state, the second time length needs to include the time required for target parameter measurement for the second reference signal, where the measurement time of the second reference signal is determined based on the period of a periodic signal associated with the unknown downlink TCI, or is determined based on the measurement slot of a non-periodic signal associated with the unknown downlink TCI.

[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 arriving 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 inactivated state, the first time length includes a 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 SSB associated with the reference signal (i.e., the third reference signal) corresponding to at least one TCI in an inactivated state. Illustratively, 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 SSB.

[0080] Optionally, in an embodiment of the present application, 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.

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

[0082] As can be understood, when at least one TCI among the multiple downlink TCIs is in an inactivated state, the second time length needs to include the time for measuring and processing the SSB associated with the reference signal (i.e., the fourth reference signal) corresponding to at least one TCI in an inactivated state. Illustratively, 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 SSB.

[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 a first type of QCL information on each of the UE's N carriers, a D type of QCL information on the N carriers, and uplink beam information, where the first type of QCL information includes an A type of QCL information, a B type of QCL information, and a C type of 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 explained that the source reference signal of ABC type QCL information is configured independently on each carrier, and D type QCL information and uplink beam information are uniquely configured on a carrier in a frequency band and can be shared by all carriers in this frequency band.

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

[0087] It should be noted that the 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 average 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 average delay and Doppler offset. The UE can determine the time domain synchronization information or frequency domain synchronization information of the 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 launch 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 a status on each of a plurality of carriers of the TCI in the first TCI status list, and the status on each carrier of the TCI in the first TCI status list is determined based on a measurement result of a fifth reference signal on each carrier.

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

[0091] In the embodiment of the present application, when the UE determines whether the TCI is known on each component carrier, it can determine based on the measurement result of the reference signal on each carrier and whether the UE has performed measurement report of the related reference signal before.It should be noted that, because the reference signal on each carrier itself also configures QCL information, when the UE determines whether the TCI is known on each carrier, it needs to refer to the configuration situation of the QCL information of the reference signal on each carrier to determine.

[0092] As can be understood, in a carrier aggregation scenario, the UE can determine a 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 in Component Carrier (CC) 1 and CC2, respectively, and are the 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 are RS3). It should be noted that RS3 may be on CC1 or CC2, or on a CC in any frequency band that does not belong to CC1 and CC2. Then, if RS3 is the RS that is measured by the UE and has made an RSRP report, and satisfies all the conditions for determining the known state, the TCI is considered to be known on both CC1 and CC2.

[0094] Optionally, in an embodiment of the present application, 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.

[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, which is abbreviated as TCI-CC pair. A known state on a TCI-CC number pair (a, b) is a known state on a certain CC b of a certain 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 should 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 TCI-CC pair, or based on a measurement slot of a non-periodic signal associated with the TCI-CC pair. Explainably, 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 a last-arrived 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 should 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. Explainably, 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 a last-arrived 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 a time for measuring and processing an SSB associated with the RS corresponding to the TCI-CC pair. Illustratively, 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 the 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 a time for measuring and processing an SSB associated with the RS corresponding to the TCI-CC pair. Illustratively, 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 the 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 according to the target indication information, and ensure that the time nodes of the uplink and downlink TCI updates are consistent in the process of the UE transmission.Then, the UE can determine the activation time of the first TCI status list according to 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), so as to align the activation times of the uplink and downlink TCIs, which facilitates the network side equipment to schedule the UE and also increases the flexibility of the UE to activate the first TCI status list, thereby avoiding the loss of uplink and downlink data transmission performance when the network side equipment schedules the UE.

[0101] Optionally, in an embodiment of the present application, 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 at least one joint TCI.

[0102] As can be seen, the network side equipment uses the 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 respectively determine the update times of the related parameters indicated by the downlink TCI and the uplink TCI.

[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, respectively, the UE can determine that the activation time of the independent TCI is the maximum value of the first time length and the second time length.

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

[0106] Optionally, in an embodiment of the present application, when at least one joint TCI has an unknown joint TCI, 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. Explained, 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 a last-arrived 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 make measurements on 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 multiple joint TCIs is in an inactivated state, the third time length needs to include a time for measuring and processing an SSB associated with an RS corresponding to at least one TCI in an inactivated state. Explained, when more than one TCI is in an inactivated state, the activation time of the joint TCI is determined according to a maximum period of the associated SSB.

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

[0113] Optionally, in an embodiment of the present application, 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.

[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 should 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 TCI-CC pair, or based on a measurement slot of a non-periodic signal associated with the TCI-CC pair. Explainably, 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 a last-arrived 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 inactivated state, the third time length needs to include a time for measuring and processing an SSB associated with the RS corresponding to the TCI-CC pair. Illustratively, when more than one TCI-CC pair is in an inactivated state, the activation time of the first TCI status list is determined according to a 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 TCI (independent TCI or joint TCI) on each carrier among the multiple carriers, which facilitates the network side equipment to schedule the UE and also increases the flexibility of the UE to activate 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 indicating 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 value of the 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, and 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 caused by the number of unknown TCIs activated by the network side equipment exceeding the capability of the UE.

[0120] In another case, in a multi-carrier scenario, since there are relatively many TCI-CC pairs, the probability of unknown TCI-CC pairs appearing 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 problems between the UE and the network side equipment caused by the number of unknown TCI-CC pairs activated by the network side equipment exceeding the capability of the UE.

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

[0122] Optionally, in the 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 an embodiment 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 embodiment of the present application, the UE can update the PL-RS list according to 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 according to 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 the update of 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 SSB should be included when determining the total time length required for the processing flow related to updating the PL-RS list. Explained, 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 SSB.

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

[0129] Optionally, in the embodiment of the present application, when at least one TCI among the multiple joint TCIs is in an inactivated state, when determining the total time length required for the processing flow related to updating the PL-RS list, it is necessary to include the time for measuring and processing the SSBs related to the RSs corresponding to at least one TCI in an inactivated state. Illustratively, when more than one TCI is in an inactivated state, the available 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 total time length required for the processing flow related to updating the PL-RS list should include the time for measuring and processing the SSB. Explained, 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 SSB.

[0131] It should be noted that the present application does not limit the execution order of the above 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 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, and the first slot is determined according to a time length required for the update processing process of the first TCI status list. In this solution, after updating the first TCI status list, the UE can determine an activation time of the updated first TCI status list according to a time length required for the update processing process of the first TCI status list, that is, the TCI activation time can be flexibly determined according to a time length required for the update processing process of the first TCI status list, which facilitates the network side device to schedule the UE and also increases the flexibility of the UE to activate the first TCI status list, thereby avoiding loss of uplink and downlink data transmission performance when the network side device schedules the UE.

[0133] Optionally, in the 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 is already valid, 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 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 (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 perform DL / UL scheduling monitoring, uplink and downlink data transmission, and / or associated ACK / NACK feedback.

[0139] In an embodiment of the present application, the UE can adopt the updated first TCI status list to transmit data in the first slot, thereby ensuring the data transmission performance of the uplink and downlink 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 performs a second TCI status list configuration and a reference signal configuration 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 of 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. An association may be established between such reference signal and 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, and 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 signal 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 report configuration including L1-RSRP configured in the network side device, and performs L1-RSRP beam measurement on these reference signals. In particular, when the UE performs beam measurement, it needs to determine the downlink time-frequency synchronization and the uplink and downlink beams to be used when performing these measurements and related periodic reports 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 of the first TCI status list (i.e., the target indication information described in the above embodiment) through MAC CE signaling, and the update instruction includes an update instruction of the uplink TCI and the downlink TCI, or includes an update instruction of the joint TCI. Here, the uplink TCI can be one or more uplink TCIs, the downlink TCI can be one or more downlink TCIs, and the joint TCI can 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, so the joint TCI and the independent TCI cannot be activated simultaneously by one MAC CE.

[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 equipment 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 feeds back an ACK or NACK at the physical layer based on the CRC check status. 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 the 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 (ie, that is to be activated).

[0153] In this step, the UE needs to determine the state of each TCI (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 22 above.

[0154] When the UE determines whether the TCI is in a known state, it can determine based on the measurement result of the reference signal and whether the UE has performed measurement reporting of the related reference signal before. The reason for defining the known state of the TCI is to address the situation where the network side device does not strictly perform the above 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, the activation of the corresponding TCI state requires additional time.

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

[0156] Step 25, the UE determines the TCI update processing time length (the time length 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 process 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, an 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, an 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 flows related to updating the launched spatial domain filter information associated with the uplink TCI or joint TCI, e.g., when an RS indicated by the downlink quasi-co-location relationship associated with the downlink TCI is still unknown and L1-RSRP measurements are required for this RS.

[0160] 3. The total time required for the processing flow related to updating the maintenance list of PL-RS (i.e., PL-RS list), for example, when the uplink TCI corresponding to the PL-RS is still in an unactivated state, it is necessary to measure the reference signal related to the PL-RS to obtain the RSRP value and obtain accurate downlink path loss information. It should be noted that when the uplink TCI or the 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 judging criterion is determined according to the description in step 24.

[0161] Further, for an independent TCI, after respectively determining a first time corresponding to an update of a downlink quasi-co-location associated with the downlink TCI and a second time corresponding to an update of 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.

[0162] As shown in Figure 6, the flow of updating TCI status is shown. It should be noted that in the process of updating the quasi-co-location relationship of downlink TCI or joint TCI status in Figure 6, the context of L1-RSRP measurement and SSB measurement and processing is only illustratively described in Figure 6, and is not limited in the embodiment of the present application.

[0163] It is necessary to include a 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 of the RS is determined based on a period of a periodic signal associated with the unknown downlink TCI, or determined based on a 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 last arriving RS measurement occasion among all RSs associated with the multiple unknown downlink TCIs.

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

[0165] It is necessary to include the time to measure and process the SSB associated with the RS corresponding to at least one TCI among multiple downlink TCIs when this TCI is in an inactivated state, and to determine the activation time of the update list according to the maximum period of the associated SSBs when more than one TCI is in an inactivated state.

[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 SSB must be included, and when more than one TCI is in an inactivated state, the available time of the PL-RS list is determined according to the maximum period of the associated SSB.

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

[0168] Furthermore, for a joint TCI, determining the downlink quasi-co-location and updating the uplink launch spatial domain filter information are determined collectively based on the known state and activation state of the reference signal corresponding to the joint TCI.

[0169] It is necessary to include a 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 a period of a periodic signal associated with the unknown joint TCI or determined based on a 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 when determining 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 available time of the PL-RS list are determined according to the maximum period of the associated SSBs.

[0171] By reporting its capability, the UE indicates the number of beam measurement reference signals that can be configured simultaneously. The network side equipment determines the maximum number of unknown TCIs that can be activated based on the UE capability. When the number of unknown TCIs activated by the network side equipment exceeds the capability of the UE, the corresponding UE behavior is not limited in the embodiment of the present 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 perform DL / UL scheduling monitoring, uplink and downlink data transmission, and 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 performs a second TCI status list configuration and a reference signal configuration for the UE.

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

[0178] The network side equipment configures a set of reference signals including PL-RS. The network side equipment further configures the 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 respectively associated with a PL-RS on a different CC.

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

[0180] The UE performs beam measurement based on the reference signal 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 report configuration including L1-RSRP configured in the network side device, and performs L1-RSRP beam measurement on these reference signals. In particular, when the UE performs beam measurement, it needs to determine the downlink time-frequency synchronization and the uplink and downlink beams to be used when performing these measurements and related periodic reports 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 among 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 the description of step 33 above can be referred to the description of step 23 in the above embodiment, and will not be further described 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 result of the reference signal on each CC and whether the UE has performed measurement reporting of the related reference signal before. It should be noted that, according to the description of step 32 above, the reference signal on each CC itself also configures 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 signal on each CC to determine it.

[0187] For example, when reference signals RS1 and RS2 are respectively configured in CC1 and CC2 and are respectively the source reference signals of ABC type QCLs on CC1 and CC2 of TCI, when determining the known relationship of RS1 and RS2, it is found that the source reference signals of the ABC type QCLs are the same and are all RS3. It should be noted that RS3 may be on CC1 or CC2, or on any in-band component carrier that does not belong to CC1 and CC2. Then, when RS3 is measured by UE and has made RSRP report, and satisfies all the conditions for determining the known state, it is considered to be known in both CC1 and CC2 of TCI.

[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 related to the downlink TCI or joint TCI.

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

[0192] 3. Total time required for the process flow associated with updating the maintenance list of PL-RS.

[0193] Furthermore, for an independent TCI, after respectively 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 launch 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) and abbreviate it as TCI-CC pair. A known state on a TCI-CC number pair (a,b) is a known state on some CC b of some 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 the TCI-CC pair, or determined based on the measurement slot of a non-periodic signal associated with an unknown downlink TCI on 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 last arriving RS measurement occasion among all RSs associated with unknown downlink TCIs on the multiple TCI-CC pairs.

[0196] It is necessary to include 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, 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 determined 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 the multiple TCI-CC pairs.

[0197] When at least one TCI-CC pair among multiple downlink TCIs is in an inactivated state, it is necessary to include the time to measure and process the SSB associated with the RS corresponding to this TCI-CC pair, 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 determining the total time required for the processing flow associated with updating the maintenance list of the PL-RS when at least one TCI-CC pair among multiple uplink TCIs is in an inactivated state, it must include the time to measure and process the SSB, and when more than one TCI-CC pair is in an inactivated state, determine the available time of the PL-RS list according to the maximum period of the associated SSB.

[0199] In a multi-carrier scenario, since there are relatively many TCI-CC pairs, 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 configured simultaneously by reporting its capability. The network side equipment determines the maximum number of unknown TCI-CC pairs that can be activated based on the UE capability. When the number of unknown TCI-CC pairs activated by the network side equipment exceeds the capability of the UE, the corresponding UE behavior is not limited in the embodiment of this application.

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

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

[0202] 8 shows one possible structural schematic diagram of a TCI status updating device according to an embodiment of the present application. As shown in FIG. 8, the TCI status updating device 40 may include: an acquisition module 41 and an update 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 the first slot is determined based on a time length 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 of downlink transmission and uplink beam information of 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, the first time length being a time length required for an update processing process of at least one uplink TCI, and the second time length being a time length required for an update processing process of at least one downlink TCI.

[0206] In one possible implementation, the first time length is determined based on a state of at least one uplink TCI, and the second time length 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.

[0207] In one possible implementation manner, when at least one uplink TCI has an unknown uplink TCI, 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 has an unknown downlink TCI, 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 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.

[0208] In one possible implementation manner, when at least one uplink TCI exists 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 exists 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 or second time length is determined based on a status on each of a plurality of carriers of the TCI in the first TCI status list, and the status on each of the carriers of the TCI in the first TCI status list is determined based on a measurement result of a fifth reference signal on each carrier.

[0210] In one possible implementation manner, when the first TCI status list contains a TCI whose status is unknown on at least one carrier, 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, which is determined based on a second reference signal group, and which is a sixth reference signal indicated by all TCIs in the first TCI status list on all carriers.

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

[0212] In one possible implementation, the third time length is determined based on a state of at least one joint TCI, the state being one of a known state, an unknown state, an activated state, and a non-activated 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 a status on each of a plurality of carriers of the TCI in the first TCI status list, and the status on each of the carriers of the TCI in the first TCI status list is determined based on a measurement result of an 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 a time length required for the UE to measure a target parameter 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 determining module, which is used for determining, based on the first UE capability information, the maximum value of the number of reference signals in the first reference signal group before the acquiring 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 a first type of QCL information on each of the UE's N carriers, a D type of QCL information on the N carriers, and uplink beam information, where the first type of QCL information includes an A type of QCL information, a B type of QCL information, and a C type of 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 acquiring module 41 is specifically used for receiving MAC CE signaling sent by a 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, the target configuration information is used to configure a second TCI status list and a reference signal set for the UE, and the TCI in the second TCI status list is used to indicate the 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 for adopting the updated first TCI status list to transmit target data when the updated first TCI status list has been validated 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, 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, thereby facilitating UE scheduling by the network side equipment and also increasing the flexibility of the UE's 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 chip. The UE may be a terminal, or other equipment other than a terminal. Exemplarily, the UE may include, but is not limited to, the types of UE 11 listed above, and the other equipment may be a server, a network attached storage (NAS), etc., and the embodiment of the present application is not specifically limited.

[0224] The TCI status updating device according to the embodiments of the present application can realize each process implemented by the UE in the above method embodiments and achieve the same technical effects, and will not be described further here in order 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 for transmitting 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 time length 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 validated after the second slot.

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

[0229] In one possible implementation manner, the transmitting module 51 is further used for transmitting 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, 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, thereby facilitating UE scheduling by the network side equipment and also increasing the flexibility of the UE's 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 updating device according to the embodiments of the present application can realize each process implemented by the network side equipment in the above method embodiments and achieve the same technical effects, and will not be described further here in order to avoid repetition.

[0232] Optionally, as shown in Fig. 10, the embodiment of the present application further provides a communication device 5000, including a processor 5001 and a memory 5002, 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, each step of the embodiment of the method on the UE side can be realized and the same technical effect can be achieved. If the communication device 5000 is a network side device, when the program or instruction is executed by the processor 5001, each step of the embodiment of the method on the network side device can be realized and the same technical effect can be achieved, and in order to avoid repetition, no further description will be given here.

[0233] The embodiment of the present application further provides a UE including a processor and a communication interface, the processor is used for the UE to obtain target indication information and update a first TCI status list according to the target indication information, where the updated first TCI status list is enabled after a first slot, and the first slot is determined according to the time length required for the update processing process of the first TCI status list. This UE embodiment corresponds to the above-mentioned UE-side method embodiment, and each implementation process and realization manner of the above-mentioned method embodiment can be applied to this UE embodiment, and the same technical effect can be achieved. Specifically, Figure 11 is a schematic diagram of a hardware structure for realizing the UE of 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 can 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, so that the power management system can 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 less components than the number of components shown, or a combination of some components, or a different arrangement of components, and will not be further described here.

[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 obtained 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, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. 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 described further 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 transmit uplink data to the network side device. In general, 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 mainly stored, and a second storage area in which data is stored, where the first storage area may store an operating system, an application program or instructions required for at least one function (e.g., a sound playback function, an image playback function, etc.), etc. The memory 709 may include a volatile memory or a non-volatile memory, or the memory 709 may include both volatile and non-volatile memory. Here, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The 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), Synch link Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM). Memory 709 in embodiments of the present application may include, 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 integrates an application processor and a modem processor, where the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, e.g., a baseband processor. As can be understood, the modem processor may not be integrated into the processor 710.

[0240] Here, the processor 710 is used for 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 the 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 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, and the first slot is determined based on a time length required for the update processing process of the first TCI status list. In this solution, after updating the first TCI status list, the UE can determine an enable time of the updated first TCI status list based on a time length required for the update processing process of the first TCI status list, that is, the TCI enable time can be flexibly determined based on a time length required for the update processing process of the first TCI status list, which facilitates the network side device to schedule the UE and also increases the flexibility of the UE to enable 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 will not be described further here in order to avoid repetition.

[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 for sending 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 slot, and the first slot is determined according to 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 above-mentioned method embodiment can be applied to this embodiment of the network side device, and the same technical effects can be achieved.

[0244] Specifically, the 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 transmits the received information through the antenna 61 after processing it.

[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 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 time length 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, and the first slot is determined according to a time length required for the update processing process of the first TCI status list. In this solution, after updating the first TCI status list, the network side device can determine an enable time of the updated first TCI status list according to a time length required for the update processing process of the first TCI status list, that is, the TCI enable time can be flexibly determined according to the time length required for the update processing process of the first TCI status list, which facilitates the network side device to schedule the UE and also increases the flexibility of the UE to enable the TCI status list, thereby avoiding loss of uplink and downlink data transmission performance when the network side device schedules the UE.

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

[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 capable of running on the processor 64, and the processor 64 can call the instructions or programs in the memory 65 to execute the method performed by each module shown in FIG. 9 and achieve the same technical effect, which will not be described further here in order to avoid repetition of description.

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

[0253] Here, the processor is the processor in the communication device according to 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] An embodiment of the present application further provides a chip, the chip including a processor and a communication interface, the communication interface is coupled to the processor, the processor is used to run a program or instruction and realize each process of the above method embodiment, and can achieve the same technical effect, and will not be described further here in order to avoid repetition of description.

[0255] It should be understood that the chips referred to in the embodiments of the present application may be referred to as system level chips, system chips, chip systems, or systems 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, which will not be described further here in order to avoid repetition of description.

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

[0258] It should be explained that in this specification, the terms "comprise", "include", or any other variants thereof are intended to cover the non-exclusive "comprise", whereby a process, method, article, or apparatus that includes a set of elements includes not only those elements, but also other elements not expressly listed or inherent to such process, method, article, or apparatus. In the absence of further limitations, an element limited by the phrase "comprises a" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes this element. It should be pointed out that the scope of the method and apparatus 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 reverse order based on the functions involved, for example, the described method can be performed in a different order than described, and various steps can be added, omitted, or combined. Also, features described with reference to some examples can be combined in other examples.

[0259] From the above description of the embodiments, it is clear to those skilled in the art that 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. In light of this understanding, the technical proposal of the present application may be substantially or the part that contributes 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 some instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0260] The above describes the embodiments of the present application in conjunction with the drawings, but 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 suggestions of this application and make many forms without departing from the spirit and scope of the claims of this application, all of which belong to the protection scope of this application.

[0261] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to 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; A transmission configuration indication TCI status update method, comprising: the UE 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 an update processing process of the first TCI status list.

2. the first TCI status list includes any one of an independent TCI and at least one joint TCI; Here, 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, and the downlink TCI is used to indicate downlink quasi-co-location QCL information of downlink transmission; The method of claim 1 , wherein the joint TCI is used to indicate a downlink QCL of a downlink transmission and an uplink beam information of an uplink transmission.

3. 3. The method of claim 2, wherein 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.

4. The first time length is determined based on a state of the at least one uplink TCI, and the second time length is determined based on a state of the at least one downlink TCI; The method of claim 3 , wherein the state is one of a known state, an unknown state, an activated state, and a non-activated state.

5. 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; 5. The method of claim 4, 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.

6. 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; 5. The method of claim 4, wherein the third reference signal is a reference signal associated with an uplink TCI in a non-activated state, and the fourth reference signal is a reference signal associated with a downlink TCI in a non-activated state.

7. The first duration or the second duration is determined based on a status on each of a plurality of carriers of a TCI in the first TCI status list; The method of claim 3 , wherein the state on each carrier of a TCI in the first TCI state list is determined based on a measurement result of a fifth reference signal on the respective carrier.

8. 8. The method of claim 7, wherein, 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.

9. 3. The method of claim 2, wherein the first slot is determined based on a third length of time, the third length of time being a length of time required for an update process of the at least one joint TCI.

10. 10. The method of claim 9, wherein the third length of time is determined based on a state of the at least one joint TCI, the state being one of a known state, an unknown state, an activated state, and a non-activated state.

11. 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 includes a joint TCI 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; 11. The method of claim 10, 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.

12. the third time period is determined based on a status on each of a plurality of carriers of a TCI in the first TCI status list; 10. The method of claim 9, wherein the state on each carrier of a TCI in the first TCI state list is determined based on a measurement result of an eighth reference signal on the respective carrier.

13. 13. The method of claim 12, wherein when the first TCI status list includes a TCI whose status is unknown on at least one carrier, the third length of time includes a length of time 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, the second reference signal group being a ninth reference signal indicated on all carriers by all TCIs in the first TCI status list.

14. Before the UE obtains target indication information, the method includes: The method of claim 8 or 13, further comprising: the UE determining a maximum number of reference signals in the first reference signal group based on first UE capability information.

15. 14. The method of claim 1, wherein the TCIs in the first TCI status list are used to indicate at least one of first type QCL information on each of the N carriers of the UE, D type QCL information on the N carriers, and uplink beam information, the first type QCL information including A type QCL information, B type QCL information, and C type QCL information, and N is an integer greater than or equal to 1.

16. After the UE obtains the target indication information, the method includes: The method of claim 1, further comprising: the UE updating a path loss reference signal (PL-RS) list based on the target indication information, wherein the updated PL-RS list is enabled after a second slot.

17. The UE obtaining the target indication information includes: The method according to claim 1 or 16, comprising: the UE receiving a media access control (MAC) CE signaling sent by a network side equipment, the MAC CE signaling including the target indication information.

18. Before the UE obtains target indication information, the method includes: The method of claim 1 or 16, further comprising: 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.

19. After the UE updates a first TCI status list based on the target indication information, the method further comprises:

17. The method of claim 1 or 16, further comprising: if the updated first TCI status list is already enabled, the UE adopting the updated first TCI status list to transmit target data, the target data including at least one of uplink / downlink scheduling information, uplink data, downlink data, and feedback information.

20. A transmission configuration indication (TCI) status update method, comprising: A transmission configuration indication TCI status update method, comprising: a network side equipment sending target indication information to a user equipment (UE), the target indication information being used by the UE to update a first TCI status list, wherein the first TCI status list after the update 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.

21. The method of claim 20, wherein 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.

22. The network side device transmits target indication information to the UE, The method according to claim 20 or 21, comprising: the network side equipment sending a media access control (MAC) CE signaling to the UE, the MAC CE signaling including the target indication information.

23. Before the network side equipment sends target indication information to the UE, the method includes: The method according to claim 20 or 21, further comprising the network side equipment sending target configuration information to the UE, 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.

24. A transmission configuration indication (TCI) status update device, comprising: An acquisition module and an update module are included, The acquisition module is used for acquiring target indication information; A transmission configuration instruction TCI status update device, wherein the update module is used to update a first TCI status list based on the target instruction 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 the length of time required for the update processing process of the first TCI status list.

25. A transmission configuration indication (TCI) status update device, comprising: a transmitting module; The sending module is used for sending target indication information to a user equipment (UE); Here, the target indication information is used by the UE to update a first TCI status list, and 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, in a transmission configuration indication TCI status update device.

26. 20. 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 steps of a transmission configuration indication (TCI) status update method according to any one of claims 1 to 19.

27. 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 status update method according to any one of claims 20 to 23, when the program or instructions are executed by the processor.

28. A communication system, comprising a transmission configuration indication TCI status updating device according to claim 24 and a TCI status updating device according to claim 25, or A communication system comprising a user equipment UE according to claim 26 and a network side equipment according to claim 27.

29. A readable storage medium having a program or instructions stored therein, the program or instructions, when executed by a processor, implementing steps of a transmission configuration indication TCI status update method as claimed in any one of claims 1 to 19, or implementing steps of a TCI status update method as claimed in any one of claims 20 to 23.

30. A computer program product, the program product being executed by at least one processor to realize the transmission configuration indication TCI status updating method according to any one of claims 1 to 19 or the transmission configuration indication TCI status updating method according to any one of claims 20 to 23.

31. A user equipment UE, configured for performing a transmission configuration indication TCI status updating method according to any one of claims 1 to 19.

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