Apparatus for inter-cell mobility and wireless communication method

Abstract

A wireless communication method of inter-cell mobility performed by a user equipment (UE) includes receiving a configuration of at least one candidate cell for inter-cell mobility from a base station, and identifying a reference signal configured in at least one transmission configuration indication (TCI) state of one of the at least one candidate cell, a physical cell identity (PCID) is associated with the one of the at least one candidate cell.

Description

Technical Field

[0001] The present disclosure relates to the field of communication systems, and more particularly, to an inter-cell mobility device and a wireless communication method. Background Art

[0002] Current inter-cell mobility designs for new radio (NR) suffer from undesirable latency and signaling overhead, which impact system performance for highly mobile user equipment (UE). In particular, the transmission configuration indicator (TCI) state approach with an additional physical-layer cell identity (PCI) does not work well in inter-cell mobility scenarios because it incurs significant signaling overhead, impairing Layer 1 / Layer 2 (L1 / L2) inter-cell mobility performance. A drawback of the current TCI state configuration approach is that the system must configure the TCI states of all candidate cells in the configuration of each serving cell, resulting in significant configuration signaling overhead and wasted NR transmission resources.

[0003] Therefore, there is an urgent need for an inter-cell mobility device and a wireless communication method. Summary of the Invention

[0004] The purpose of the present disclosure is to propose an inter-cell mobility device and a wireless communication method, which can solve the problems in the prior art and other problems, reduce signaling overhead, and / or improve inter-cell mobility performance.

[0005] In a first aspect of the present disclosure, a wireless communication method for inter-cell mobility, performed by a user equipment (UE), includes receiving a configuration of at least one candidate cell for inter-cell mobility from a base station, and identifying a reference signal, which is configured in at least one transmission configuration indication (TCI) state of one candidate cell among the at least one candidate cell and is associated with a physical cell identifier (PCID) of the one candidate cell among the at least one candidate cell.

[0006] In a second aspect of the present disclosure, a UE includes a receiver and an identifier. The receiver is configured to receive a configuration of at least one candidate cell for inter-cell mobility from a base station, and the identifier is configured to identify a reference signal configured in at least one transmission configuration indication (TCI) state of one of the at least one candidate cell and associated with a physical cell identifier (PCID) of the one of the at least one candidate cell.

[0007] In a third aspect of the present disclosure, a UE includes a memory, a transceiver, and a processor coupled to the memory and the transceiver. The UE is configured to execute the above method.

[0008] In a fourth aspect of the present disclosure, a wireless communication method for inter-cell mobility is performed by a base station, including sending a configuration of at least one candidate cell for inter-cell mobility to a user equipment (UE), and instructing the UE to identify a reference signal, which is configured in at least one transmission configuration indication (TCI) state of one candidate cell among the at least one candidate cell and is associated with a physical cell identifier (PCID) of the one candidate cell among the at least one candidate cell.

[0009] In a fifth aspect of the present disclosure, a base station includes a transmitter and an indicator. The transmitter is configured to send a configuration of at least one candidate cell for inter-cell mobility to a user equipment (UE), and the indicator is configured to instruct the UE to identify a reference signal, the reference signal configured in at least one transmission configuration indication (TCI) state of one of the at least one candidate cells and associated with a physical cell identifier (PCID) of the one of the at least one candidate cells.

[0010] In a sixth aspect of the present disclosure, a base station includes a memory, a transceiver, and a processor coupled to the memory and the transceiver. The base station is configured to execute the above method.

[0011] In a seventh aspect of the present disclosure, a non-volatile machine-readable storage medium stores instructions, which, when executed by a computer, causes the computer to execute the above method.

[0012] In an eighth aspect of the present disclosure, a chip includes a processor configured to call and run a computer program stored in a memory so that a device equipped with the chip executes the above method.

[0013] In a ninth aspect of the present disclosure, a computer-readable storage medium is provided, wherein a computer program is stored in the computer-readable storage medium, so that a computer executes the above method.

[0014] In a tenth aspect of the present disclosure, a computer program product includes a computer program, which enables a computer to execute the above method.

[0015] In an eleventh aspect of the present disclosure, a computer program causes a computer to execute the above method. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present disclosure or related technologies, the following drawings will be briefly introduced in the embodiments. Obviously, the drawings are only some embodiments of the present disclosure, and ordinary technicians in this field can obtain other drawings based on these drawings without further effort.

[0017] Figure 1 is a block diagram of one or more user equipments (UEs) and a base station communicating in a communication network system according to an embodiment of the present disclosure.

[0018] Figure 2 is a block diagram of a UE according to an embodiment of the present disclosure.

[0019] Figure 3 is a block diagram of a UE according to an embodiment of the present disclosure.

[0020] Figure 4 The present invention is a flowchart of a wireless communication method for inter-cell mobility performed by a UE according to an embodiment of the present disclosure.

[0021] Figure 5 is a block diagram of a base station according to an embodiment of the present disclosure.

[0022] Figure 6 is a block diagram of a base station according to an embodiment of the present disclosure.

[0023] Figure 7 The present invention is a flowchart of a wireless communication method for inter-cell mobility performed by a base station according to an embodiment of the present disclosure.

[0024] Figure 8 is a block diagram of an exemplary computing device according to an embodiment of the present disclosure.

[0025] Figure 9 is a block diagram of a communication system according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0026] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings to explain the technical content, structural features, objectives and effects of the embodiments. Specifically, the terms in the embodiments of the present disclosure are only used to describe the purpose of specific embodiments and are not intended to limit the present disclosure.

[0027] The technical solutions of the embodiments of the present disclosure can be applied to various communication systems, such as global system of mobile communication (GSM), code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, advanced long term evolution (LTE-A) system, new radio (NR) system, NR system evolution system, LTE-based unlicensed spectrum access (LTE-U) system, NR-based unlicensed spectrum access (NR-U) system, universal mobile telecommunication system (UMTS), global interoperability for microwave access (GMI), and other related technologies. access, WiMAX) communication system, wireless local area network (WLAN), wireless fidelity (Wi-Fi), future fifth generation (5G) system (also known as NR system) or other communication systems.

[0028] Optionally, the base station mentioned in the embodiments of the present disclosure can provide communication coverage for a specific geographic area and can communicate with user equipment (UE) located in the coverage area. Optionally, the base station can be a gNB, a base transceiver station (BTS) in a GSM or CDMA system, a node B (NB) in a WCDMA system, an evolutionary node B (eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN).

[0029] User equipment (UE) may refer to an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. An access terminal may be a cellular radiotelephone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device, other processing devices coupled to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network, a terminal device in a future evolved public land mobile network (PLMN), etc.

[0030] Optionally, the communication system in the embodiment of the present disclosure can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be regarded as a shared spectrum; or, the communication system in the embodiment of the present disclosure can also be applied to an authorized spectrum, where the authorized spectrum can also be regarded as an unshared spectrum.

[0031] The NR / 5G system supports radio resource management (RRM) measurement functionality. For inter-cell mobility, the NR / 5G system can request that the UE measure the synchronization signal (SS) / physical broadcast channel (PBCH) block (SSB) and / or channel state information reference signal (CSI-RS) of a neighboring cell. The UE reports the measurement results to the NR / 5G system. The NR / 5G system uses the reported measurement results to determine inter-cell mobility, such as whether the UE should hand over to a neighboring base station.

[0032] The NR / 5G system provides RRM measurement configuration to the UE through radio resource control (RRC) signaling. The measurement configuration includes a measurement object list, reporting configuration, measurement identifier, quantity configuration, and measurement gap configuration. The measurement object configuration provides the configuration of the SSB and / or CSI-RS used for moving to one or more cells at a specific frequency point. Considering that the UE does not need to measure all SSBs of a cell, an SSB-based measurement timing configuration (SMTC) configuration is provided. The UE only needs to measure the SSBs within the SMTC.

[0033] The reporting configuration provides the measurement and reporting information that the UE is requested to perform. For example, the reporting configuration may indicate the number of reports that can be used to trigger certain reports, reporting criteria, and even the reporting type. Based on the RRM configuration, the UE can measure the third layer reference signal received power (third layer-reference signal received power, L3-RSRP), L3 reference signal received quality (reference signal received quality, RSRQ) or L3 received signal strength indicator (received signal strength indicator, RSSI) on the SSB and / or CSI-RS for the mobility of several target cells given in the RRM configuration. The UE reports the measurement results to the system through RRC signaling.

[0034] Existing NR systems also support the ability to measure L1-RSRP for SSBs associated with a physical cell identification (PCI) (which is different from the serving cell's PCI). The gNB can provide a list of SSBs associated with a PCI (which is different from the serving cell's PCI) in the CSI reporting framework.

[0035] The UE may be requested to measure the SSBs associated with the neighboring cell PCI and report where K = 1, 2, 3 or

[0036] Indicators of the four SSBs and the corresponding L1-RSRP measurements. The UE can report the measurement results through uplink control information (UCI). In this function, the NR system requires that the SSBs associated with the PCI (which is different from the PCI of the serving cell) and the SSB of the serving cell are on the same frequency and use the same subcarrier spacing. It is also assumed that the SSBs associated with different PCIs are time synchronized with the serving cell.

[0037] Current NR systems support RRC-based handover for inter-cell mobility. During a conventional gNB-controlled handover procedure, the serving gNB sends a handover command to the UE via RRC signaling. This handover command conveys RRC reconfiguration information and target cell information to the UE. Upon receiving the handover command, the UE initiates a random access procedure to the target cell, as instructed in the handover command. Through the random access procedure, the UE establishes a connection with the target cell (e.g., a neighboring cell). Once the connection with the new cell is complete, the UE sends a handover complete message to the system, completing the handover procedure.

[0038] In the current NR system, the UE can be configured with one or more transmission configuration indicator (TCI) states, which are associated with the PCI of the non-serving cell. When a TCI state is configured with an additional PCI, the PCI represents the PCI of the SSB configured in the quasi co-location (QCL) of the TCI state. This function can be used to provide inter-cell beam management, through which the system can indicate a transmit (Tx) beam of the transmission / reception point (TRP) of the non-serving cell.

[0039] Current New Radio (NR) inter-cell mobility designs suffer from undesirable latency and signaling overhead, which degrades system performance for highly mobile user equipment (UE). In particular, the Transmission Configuration Indicator (TCI) state approach with an additional physical cell identifier (PCI) does not work well in inter-cell mobility scenarios because it incurs significant signaling overhead, impairing Layer 1 / Layer 2 (L1 / L2) inter-cell mobility performance. A drawback of the current TCI state configuration approach is that the system must configure the TCI states of all candidate cells in the configuration of each serving cell, resulting in significant configuration signaling overhead and wasted NR transmission resources.

[0040] To overcome these and other challenges, some embodiments of the present disclosure provide exemplary configuration and indication of TCI status of candidate cells for inter-cell mobility.

[0041] Figure 1 In some embodiments, one or more user equipments (UEs) 10 and a base station (e.g., a next generation NodeB (gNB) or eNB) 20 communicating in a communication network system 30 (e.g., an NR system) provided according to an embodiment of the present disclosure are shown. The communication network system 30 includes one or more UEs 10 and a base station 20. The one or more UEs 10 may include a memory 12, a transceiver 13, and a processor 11 coupled to the memory 12 and the transceiver 13. The base station 20 may include a memory 22, a transceiver 23, and a processor 21 coupled to the memory 22 and the transceiver 23. The processor 11 or the processor 21 may be configured to implement the proposed functions, processes, and / or methods described in this specification. The various layers of the radio interface protocol may be implemented in the processor 11 or the processor 21. The memory 12 or the memory 22 is operably coupled to the processor 11 or the processor 21 and stores various information to operate the processor 11 or the processor 21. The transceiver 13 or the transceiver 23 is operatively coupled to the processor 11 or the processor 21 , and the transceiver 13 or the transceiver 23 transmits and / or receives wireless signals.

[0042] The processor 11 or the processor 21 may include an application-specific integrated circuit (ASIC), other chipsets, logic circuits, and / or data processing devices. The memory 12 or the memory 22 may include a read-only memory (ROM), a random access memory (RAM), flash memory, a memory card, a storage medium, and / or other storage devices. The transceiver 13 or the transceiver 23 may include a baseband circuit to process radio frequency signals. When the embodiment is implemented in software, the techniques described herein may be implemented using modules (e.g., procedures, functions, etc.) that perform the functions described herein. These modules may be stored in the memory 12 or the memory 22 and executed by the processor 11 or the processor 21. The memory 12 or the memory 22 may be implemented within the processor 11 or the processor 21, or may be implemented externally to the processor 11 or the processor 21. In the latter case, the memory 12 or the memory 22 may be communicatively coupled to the processor 11 or the processor 21 by various means known in the art.

[0043] In some embodiments, the transceiver 13 is configured to receive a configuration of at least one candidate cell for inter-cell mobility from the base station 20, and the processor 11 is configured to identify a reference signal configured in at least one transmission configuration indication (TCI) state of one of the at least one candidate cell and associated with a physical cell identifier (PCID) of the one of the at least one candidate cell. This can address issues in the prior art and other issues, reduce signaling overhead, and / or improve inter-cell mobility performance.

[0044] In some embodiments, the transceiver 23 is configured to transmit a configuration of at least one candidate cell for inter-cell mobility to the UE 10, and the processor 21 is configured to instruct the UE 10 to identify a reference signal configured in at least one transmission configuration indication (TCI) state of one of the at least one candidate cell and associated with a physical cell identifier (PCID) of the one of the at least one candidate cell. This can address issues in the prior art and other issues, reduce signaling overhead, and / or improve inter-cell mobility performance.

[0045] Figure 2An example of a UE 200 according to an embodiment of the present application is shown. The UE 200 is configured to implement some embodiments of the present disclosure. Some embodiments of the present disclosure can be implemented in the UE 200 using any appropriately configured hardware and / or software. The UE 200 includes a receiver 201 and an identifier 202. The receiver 201 is configured to receive a configuration of at least one candidate cell for inter-cell mobility from a base station, and the identifier 202 is configured to identify a reference signal, which is configured in at least one transmission configuration indication (TCI) state of one candidate cell in the at least one candidate cell and is associated with a physical cell identifier (PCID) of the one candidate cell in the at least one candidate cell. This can solve the problems in the prior art and other problems, reduce signaling overhead, and / or improve the performance of inter-cell mobility.

[0046] Figure 3 An example of a UE 300 according to an embodiment of the present disclosure is shown. UE 300 is configured to implement some embodiments of the present disclosure. Some embodiments of the present disclosure may be implemented in UE 300 using any appropriately configured hardware and / or software. UE 300 may include a memory 301, a transceiver 302, and a processor 303 coupled to the memory 301 and the transceiver 302. Processor 303 may be configured to implement the proposed functions, processes, and / or methods described in this specification. Various layers of a wireless interface protocol may be implemented in processor 303. Memory 301 is operably coupled to processor 303 and stores various information to operate processor 303. Transceiver 302 is operably coupled to processor 303, and transceiver 302 transmits and / or receives wireless signals. Processor 303 may include an application-specific integrated circuit (ASIC), other chipsets, logic circuits, and / or data processing devices. Memory 301 may include read-only memory (ROM), random access memory (RAM), flash memory, a memory card, a storage medium, and / or other storage devices. Transceiver 302 may include baseband circuitry to process radio frequency signals. When an embodiment is implemented in software, the techniques described herein may be implemented using modules (e.g., procedures, functions, etc.) that perform the functions described herein. These modules may be stored in memory 301 and executed by processor 303. Memory 301 may be implemented within processor 303 or external to processor 303, in which case memory 301 may be communicatively coupled to processor 303 using various means known in the art.

[0047] In some embodiments, the transceiver 302 is configured to receive a configuration of at least one candidate cell for inter-cell mobility from a base station, and the processor 303 is configured to identify a reference signal configured in at least one transmission configuration indication (TCI) state of one of the at least one candidate cell and associated with a physical cell identifier (PCID) of the one of the at least one candidate cell. This can address issues in the prior art and other issues, reduce signaling overhead, and / or improve inter-cell mobility performance.

[0048] Figure 4 This is an example of an inter-cell mobility method 400 performed by a UE according to an embodiment of the present disclosure. The inter-cell mobility method 400 performed by the UE is configured to implement some embodiments of the present disclosure. Some embodiments of the present disclosure can be implemented in the inter-cell mobility method 400 performed by the UE using any appropriately configured hardware and / or software. In some embodiments, the inter-cell mobility method 400 performed by the UE includes operations 402 and 404. Operation 402 is to receive a configuration of at least one candidate cell for inter-cell mobility from a base station. Operation 404 is to identify a reference signal, which is configured in at least one transmission configuration indicator (TCI) state of one candidate cell in at least one candidate cell and is associated with a physical cell identifier (PCID) of the one candidate cell in at least one candidate cell. This can solve problems in the prior art and other problems, reduce signaling overhead, and / or improve the performance of inter-cell mobility.

[0049] In some embodiments, at least one TCI state includes at least one joint TCI state, at least one downlink (DL) TCI state, and / or at least one uplink (UL) TCI state. In some embodiments, one of the at least one joint TCI states includes a TCI state identification (ID), one or two quasi co-location (QCL) configurations, a path loss reference signal (RS), and multiple power control parameters. In some embodiments, a reference signal for QCL or for path loss RS configured in the one joint TCI state in the at least one joint TCI state is associated with a PCID of the one candidate cell in the at least one candidate cell. In some embodiments, one of the at least one DL TCI states includes a TCI state and one or two QCL configurations.

[0050] In some embodiments, a reference signal for QCL configured in one of the at least one DL TCI states is associated with a PCID of the one of the at least one candidate cell. In some embodiments, one of the at least one UL TCI states includes a TCI state ID, a path loss RS, an RS providing a reference for a UL spatial domain transmit (Tx) filter, and a plurality of UL power control parameters. In some embodiments, a reference signal for the path loss RS or a reference for a UL spatial domain Tx filter configured in the one of the at least one UL TCI states is associated with a PCID of the one of the at least one candidate cell.

[0051] In some embodiments, the method further includes: instructing, by the base station, through a command, to switch to the one of the at least one candidate cells. In some embodiments, the method further includes requesting, by the base station, through a command, to activate at least one TCI state of the one of the at least one candidate cells, and measuring the quality of the RS of the one of the at least one candidate cells. In some embodiments, the method further includes receiving a command from the base station to activate at least one TCI state of the one of the at least one candidate cells. In some embodiments, the command includes a medium access control (MAC) control element (CE) command.

[0052] In some embodiments, the MAC CE command includes one or more of the following fields: an indicator of the one candidate cell among at least one candidate cell, a first indicator for indicating an identification (ID) of a first joint TCI state among at least one TCI state, a second indicator for indicating an ID of a second joint TCI state among at least one TCI state, and a third indicator for indicating an ID of a third joint TCI state among at least one TCI state.

[0053] In some embodiments, the MAC CE command includes one or more of the following fields: an indicator of the one candidate cell among at least one candidate cell, a first indicator for indicating the ID of the first DL TCI state among at least one TCI state, a second indicator for indicating the ID of the second DL TCI state among at least one TCI state, a third indicator for indicating the ID of the third DL TCI state among at least one TCI state, a fourth indicator for indicating the ID of the first UL TCI state among at least one TCI state, a fifth indicator for indicating the ID of the second UL TCI state among at least one TCI state, and a sixth indicator for indicating the ID of the third UL TCI state among at least one TCI state.

[0054] In some embodiments, the MAC CE command includes one or more of the following fields: an indicator of the one candidate cell among the at least one candidate cell, a first indicator for indicating the ID of a joint TCI state among the at least one TCI state, a second indicator for indicating the ID of a DL TCI state among the at least one TCI state, and a third indicator for indicating the ID of a UL TCI state among the at least one TCI state.

[0055] Figure 5 An example of a base station 500 according to an embodiment of the present disclosure is shown. The base station 500 is configured to implement some embodiments of the present disclosure. Some embodiments of the present disclosure can be implemented in the base station 500 using any appropriately configured hardware and / or software. The base station 500 includes a transmitter 501 and an indicator 502. The transmitter 501 is configured to transmit a configuration of at least one candidate cell for inter-cell mobility to a user equipment (UE), and the indicator 502 is configured to instruct the UE to identify a reference signal in at least one transmission configuration indication (TCI) state configured for one of the at least one candidate cells, the reference signal being associated with a physical cell identifier (PCID) of the one of the at least one candidate cells. This can solve problems in the prior art and other problems, reduce signaling overhead, and / or improve the performance of inter-cell mobility.

[0056] Figure 6An example of a base station 600 according to an embodiment of the present disclosure is shown. The base station 600 is configured to implement some embodiments of the present disclosure. Some embodiments of the present disclosure can be implemented in the base station 600 using any appropriately configured hardware and / or software. The base station 600 may include a memory 601, a transceiver 602, and a processor 603 coupled to the memory 601 and the transceiver 602. The processor 603 may be configured to implement the functions, processes, and / or methods described in this specification. The various layers of the wireless interface protocol may be implemented in the processor 603. The memory 601 is operably coupled to the processor 603 and stores various information to operate the processor 603. The transceiver 602 is operably coupled to the processor 603, and the transceiver 602 transmits and / or receives wireless signals. The processor 603 may include an application-specific integrated circuit (ASIC), other chipsets, logic circuits, and / or data processing devices. The memory 601 may include read-only memory (ROM), random access memory (RAM), flash memory, a memory card, a storage medium, and / or other storage devices. The transceiver 602 may include baseband circuitry to process radio frequency signals. When the embodiments are implemented in software, the techniques described herein may be implemented using modules (e.g., procedures, functions, etc.) that perform the functions described herein. These modules may be stored in the memory 601 and executed by the processor 603. The memory 601 may be implemented within the processor 603 or external to the processor 603, in which case the memory 601 may be communicatively coupled to the processor 603 using various means known in the art.

[0057] In some embodiments, the transceiver 602 is configured to transmit a configuration of at least one candidate cell for inter-cell mobility to a user equipment (UE), and the processor 603 is configured to instruct the UE to identify a reference signal in at least one transmission configuration indication (TCI) state configured for one of the at least one candidate cells, the reference signal being associated with a physical cell identifier (PCID) of the one of the at least one candidate cells. This can address issues in the prior art and other issues, reduce signaling overhead, and / or improve inter-cell mobility performance.

[0058] Figure 7This is an example of an inter-cell mobility method 700 performed by a base station according to an embodiment of the present disclosure. The inter-cell mobility method 700 performed by the base station is configured to implement some embodiments of the present disclosure. Some embodiments of the present disclosure can be implemented in the inter-cell mobility method 700 performed by the base station using any appropriately configured hardware and / or software. In some embodiments, the inter-cell mobility method 700 performed by the base station includes operations 702 and 704. Operation 702 is to transmit a configuration of at least one candidate cell for inter-cell mobility to a user equipment (UE). Operation 704 is to instruct the UE to identify a reference signal, which is configured in at least one transmission configuration indication (TCI) state of one candidate cell in the at least one candidate cell and is associated with the physical cell identifier (PCID) of the one candidate cell in the at least one candidate cell. This can solve problems in the prior art and other problems, reduce signaling overhead, and / or improve the performance of inter-cell mobility.

[0059] In some embodiments, at least one TCI state includes at least one joint TCI state, at least one downlink (DL) TCI state and / or at least one uplink (UL) TCI state. In some embodiments, one of the at least one joint TCI states includes a TCI state identifier (ID), one or two quasi-co-location (QCL) configurations, a path loss RS, and multiple power control parameters. In some embodiments, a reference signal for QCL or for path loss RS configured in the one joint TCI state in the at least one joint TCI state is associated with the PCID of the one candidate cell in the at least one candidate cell. In some embodiments, one of the at least one DL TCI states includes a TCI state and one or two QCL configurations.

[0060] In some embodiments, a reference signal for QCL configured in one of the at least one DL TCI states is associated with a PCID of the one of the at least one candidate cell. In some embodiments, one of the at least one UL TCI states includes a TCI state ID, a path loss RS, an RS providing a reference for a UL spatial domain transmit (Tx) filter, and a plurality of UL power control parameters. In some embodiments, a reference signal for the path loss RS or a reference for the UL spatial domain Tx filter configured in the one of the at least one UL TCI states is associated with a PCID of the one of the at least one candidate cell.

[0061] In some embodiments, the method further includes instructing the UE to switch to the one of the at least one candidate cells via a command. In some embodiments, the method further includes requesting the UE to activate at least one TCI state for the one of the at least one candidate cells via a command, and measuring the quality of the RS of the one of the at least one candidate cells. In some embodiments, the method further includes sending a command to the UE to activate at least one TCI state for the one of the at least one candidate cells. In some embodiments, the command includes a medium access control (MAC) control element (CE) command.

[0062] In some embodiments, the MAC CE command includes one or more of the following fields: an indicator of the one candidate cell among at least one candidate cell, a first indicator for indicating an identification (ID) of a first joint TCI state among at least one TCI state, a second indicator for indicating an ID of a second joint TCI state among at least one TCI state, and a third indicator for indicating an ID of a third joint TCI state among at least one TCI state.

[0063] In some embodiments, the MAC CE command includes one or more of the following fields: an indicator of the one candidate cell among at least one candidate cell, a first indicator for indicating the ID of the first DL TCI state among at least one TCI state, a second indicator for indicating the ID of the second DL TCI state among at least one TCI state, a third indicator for indicating the ID of the third DL TCI state among at least one TCI state, a fourth indicator for indicating the ID of the first UL TCI state among at least one TCI state, a fifth indicator for indicating the ID of the second UL TCI state among at least one TCI state, and a sixth indicator for indicating the ID of the third UL TCI state among at least one TCI state.

[0064] In some embodiments, the MAC CE command includes one or more of the following fields: an indicator of the one candidate cell among the at least one candidate cell, a first indicator for indicating the ID of a joint TCI state among the at least one TCI state, a second indicator for indicating the ID of a DL TCI state among the at least one TCI state, and a third indicator for indicating the ID of a UL TCI state among the at least one TCI state.

[0065] Exemplary technical solutions:

[0066] In some embodiments, the base station may provide the UE with a configuration of a candidate cell list for L1 / L2-based inter-cell mobility. The UE may be instructed to switch to one of the candidate cells. The base station may request the UE to activate one or more TCI states for the candidate cell and measure the quality of the reference signal (e.g., SSB, CSI-RS, etc.) of the candidate cell. The system may send an activation command to activate one or more TCI states for the candidate cell by the UE.

[0067] In some embodiments, one or more candidate cells for L1 / L2-based inter-cell mobility may be provided to the UE. In the configuration of the first candidate cell, the system may provide the UE with a TCI state list. The TCI state may be a joint TCI state, which may include a TCI state identifier (ID), one or two QCL configurations, a path loss RS, and multiple power control parameters. The UE may be requested to assume that the reference signal for QCL or for path loss RS configured in the joint TCI state is associated with the PCID of the first candidate cell. For example, an SSB may be configured in the QCL or path loss RS, and the UE may be requested to assume that the SSB is associated with the PCID of the first candidate cell.

[0068] In some embodiments, the TCI state may be a DL TCI state, which may include one TCI state and one or two QCL configurations. The UE may be requested to assume that the reference signal for QCL configured in the DL TCI state is associated with the PCID of the first candidate cell. For example, when an SSB is configured in the QCL, the UE may be requested to assume that the SSB is associated with the PCID of the first candidate cell.

[0069] In some embodiments, the TCI state may be a UL TCI state, which may include a TCI state identifier (ID), a path loss RS, an RS providing a reference for a UL spatial domain Tx filter, and UL power control parameters. The UE may be requested to assume that the reference signal configured in the UL TCI state for the path loss RS or the reference for the UL spatial domain Tx filter is associated with the PCID of the first candidate cell. For example, if the SSB is configured as the path loss RS or the reference for the UL spatial domain Tx filter, the UE may be requested to assume that the SSB is associated with the PCID of the first candidate cell.

[0070] In some embodiments, a list of candidate cells for L1 / L2-based inter-cell mobility may be provided to the UE. For example, the UE may be configured with a first candidate cell and a second candidate cell. Under the configuration of the first candidate cell, a list of joint TCI states may be provided to the UE. Under the configuration of the second candidate cell, a list of joint TCI states may be provided to the UE. The system may indicate to the UE that one or more joint TCI states of one of the candidate cells are activated. For example, the system may send a MAC CE command to the UE, and the MAC CE command may include one or more of the following fields: an indicator of a candidate cell, for example, the field may indicate the first candidate cell, and for another example, the field may indicate the second candidate cell; a first indicator indicating an ID of a joint TCI state; a second indicator indicating an ID of a joint TCI state; and a third indicator indicating an ID of a joint TCI state.

[0071] In some embodiments, when the UE receives a MAC CE command indicating a first candidate cell, a first joint TCI state ID, a second joint TCI state ID, and a third joint TCI state ID, the UE may be requested to assume that: the joint TCI state corresponding to the first joint TCI state ID configured under the first candidate cell, the joint TCI state corresponding to the second joint TCI state ID configured under the first candidate cell, and the joint TCI state corresponding to the third joint TCI state ID configured under the first candidate cell are all activated.

[0072] In some embodiments, under the configuration of the first candidate cell, a list of DL TCI states and a list of UL TCI states may be provided to the UE. Under the configuration of the second candidate cell, a list of DL TCI states and a list of UL TCI states may be provided to the UE. The system may indicate that one or more DL TCI states of a candidate cell and one or more UL TCI states of a candidate cell are activated. For example, the system may send a MAC CE command, which includes one or more of the following fields: an indicator of a candidate cell, for example, the field may indicate the first candidate cell, and for another example, the field may indicate the second candidate cell; a first indicator indicating the ID of a DL TCI state; a second indicator indicating the ID of a DL TCI state; a third indicator indicating the ID of a DL TCI state; a fourth indicator indicating the ID of a UL TCI state; a fifth indicator indicating the ID of a UL TCI state; and a sixth indicator indicating the ID of a UL TCI state.

[0073] In some embodiments, when the UE receives a MAC CE command indicating a first candidate cell, a first DL TCI state ID, a second DL TCI state ID, a third DL TCI state ID, a fourth UL TCI state ID, a fifth UL TCI state ID, and a sixth UL TCI state ID, the UE may be requested to assume that the DL TCI state corresponding to the first DL TCI state ID configured in the first candidate cell, the DL TCI state corresponding to the second DL TCI state ID configured in the first candidate cell, and the DL TCI state corresponding to the third DL TCI state ID configured in the first candidate cell are all activated. The UE may be requested to assume that the UL TCI state corresponding to the fourth UL TCI state ID configured in the first candidate cell, the UL TCI state corresponding to the fifth UL TCI state ID configured in the first candidate cell, and the UL TCI state corresponding to the sixth DL TCI state ID configured in the first candidate cell are all activated.

[0074] In some embodiments, the system may send a MAC CE to switch the UE from the serving cell to a candidate cell. In the MAC CE command, the system may indicate a joint TCI state, a DL TCI state, and / or a UL TCI state. The UE may be requested to assume that the indicated joint TCI state, DL TCI state, and / or UL TCI state is the TCI state configured under the configuration of the candidate cell included in the same MAC CE command. In the MAC CE command, the system may provide one or more of the following fields: an indicator of a candidate cell, for example, the field may indicate a first candidate cell, and for another example, the field may indicate a second candidate cell; a first indicator indicating the ID of a joint TCI state; a second indicator indicating the ID of a DL TCI state; and a third indicator indicating the ID of a UL TCI state.

[0075] In some embodiments, when the UE receives a MAC CE command indicating a first candidate cell and a first joint TCI state ID, the UE may be requested to assume that the joint TCI state corresponding to the first joint TCI state ID configured under the first candidate cell is indicated. The UE may be requested to apply the TCI state to the reception of the downlink channel and / or CSI-RS of the first candidate cell and the transmission of the physical uplink shared channel (PUSCH) / physical uplink control channel (PUCCH) / sounding reference signal (SRS) of the first candidate cell. When the UE receives a MAC CE command indicating the first candidate cell, a second DL TCI state ID, and a third UL TCI state, the UE may be requested to assume that the DL TCI state corresponding to the second DL TCI state ID configured under the first candidate cell and the UL TCI state corresponding to the third UL TCI state ID configured under the first candidate cell are indicated. The UE may be requested to apply the DL TCI state to the reception of the downlink channel and / or CSI-RS of the first candidate cell and to apply the UL TCI state to the transmission of the PUSCH / PUCCH / SRS of the first candidate cell.

[0076] Technical advantages: In some embodiments, the exemplary configuration and indication of the TCI status of candidate cells for inter-cell mobility described in this document enable the system to provide the configuration and indication of the TCI status of each candidate cell for L1 / L2-based inter-cell mobility, thereby improving the performance of the inter-cell mobility of the NR system.

[0077] The commercial value of some embodiments is as follows. 1. Solve problems and other problems in the existing technology. 2. Reduce signaling overhead. 3. Improve the performance of inter-cell mobility. 4. Provide good communication performance. 5. Provide high reliability. Some embodiments of the present disclosure can be used in many applications. Some embodiments of the present disclosure are intended for use by chipset vendors, video system development vendors, automotive manufacturers (including cars, trains, trucks, buses, bicycles, motorcycles, helmets, etc.), drones (unmanned aerial vehicles), smartphone manufacturers, public safety communication equipment, augmented reality (AR) / virtual reality (VR) / mixed reality (MR) device manufacturers (for example, games, conferences / seminars, educational purposes). Some embodiments of the present disclosure are combinations of "techniques / processes" that can be adopted in video standards to create final products. Some embodiments of the present disclosure propose technical mechanisms. At least one scheme, method, system, and device proposed in some embodiments of the present disclosure can be used in current and / or new / future standards for communication systems (for example, UE, base station, and / or communication system). Compatible products comply with at least one scheme, method, system, and device proposed in some embodiments of the present disclosure. The proposed solutions, methods, systems, and devices are widely applicable to UEs, base stations, and / or communication systems. By implementing at least one solution, method, system, and device proposed in some embodiments of the present disclosure, at least one modification to the inter-cell mobility method and device is incorporated into standardization considerations.

[0078] Figure 8 is an example of a computing device 1100 according to an embodiment of the present disclosure. Any suitable computing device may be used to perform the operations described herein. For example, Figure 8 An example of a computing device 1100 is shown, which may be implemented using any suitably configured hardware and / or software. Figures 1 to 7 In some embodiments, the computing device 1100 may include a processor 1112 that is communicatively coupled to a memory 1114 and executes computer-executable program code and / or accesses information stored in the memory 1114. The processor 1112 may include a microprocessor, an application-specific integrated circuit (ASIC), a state machine, or other processing device. The processor 1112 may include any number (including one) of processing devices. Such a processor may include a computer-readable medium having instructions stored thereon or may communicate with a computer-readable medium having instructions stored thereon. When these instructions are executed by the processor 1112, the processor performs the operations described herein.

[0079] Memory 1114 may include any suitable non-volatile computer-readable medium. The computer-readable medium may include any electronic device, optical device, magnetic device, or other storage device capable of providing computer-readable instructions or other program code to the processor. Non-limiting examples of computer-readable media include disks, memory chips, read-only memories (ROMs), random access memories (RAMs), application-specific integrated circuits (ASICs), configured processors, optical storage, magnetic tape or other magnetic storage, or any other medium from which a computer processor can read instructions. These instructions may include processor-specific instructions generated by a compiler and / or interpreter based on code written in any suitable computer programming language, including, for example, C, C++, C#, Visual Basic, Java, Python, Perl, JavaScript, and ActionScript.

[0080] The computing device 1100 may also include a bus 1116. The bus 1116 may communicatively couple one or more components of the computing device 1100. The computing device 1100 may also include a number of external or internal devices, such as input devices or output devices. For example, the computing device 1100 is shown as having an input / output (I / O) interface 1118, which can receive input from one or more input devices 1120 or provide output to one or more output devices 1122. The one or more input devices 1120 and the one or more output devices 1122 can be communicatively coupled to the I / O interface 1118. The communicative coupling can be achieved in any suitable manner (e.g., via a printed circuit board connection, via a cable connection, via wireless transmission communication, etc.). Non-limiting examples of the input device 1120 include a touch screen (e.g., one or more cameras for imaging a touch area, or a pressure sensor for detecting pressure changes caused by a touch), a mouse, a keyboard, or any other device that can be used to generate input events in response to physical actions of a computing device user. Non-limiting examples of output device 1122 include a liquid crystal display (LCD) screen, an external monitor, speakers, or any other device that can be used to display or otherwise present output generated by the computing device.

[0081] The computing device 1100 can execute program code that configures the processor 1112 to perform the above-mentioned Figures 1 to 7 The program code may reside in the memory 1114 or any suitable computer-readable medium and may be executed by the processor 1112 or any other suitable processor.

[0082] The computing device 1100 may also include at least one network interface device 1124. The network interface device 1124 may include any device or group of devices suitable for establishing a wired or wireless data connection to one or more data networks 1128. Non-limiting examples of the network interface device 1124 include an Ethernet network adapter, a modem, etc. The computing device 1100 may transmit messages in the form of electrical or optical signals via the network interface device 1124.

[0083] Figure 9 12 is a block diagram of an example of a communication system 1200 according to an embodiment of the present disclosure. The embodiments described herein may be implemented in the communication system 1200 using any suitably configured hardware and / or software. Figure 9 A communication system 1200 is shown, which includes at least a radio frequency (RF) circuit 1210, a baseband circuit 1220, an application circuit 1230, a memory / storage device 1240, a display 1250, a camera 1260, a sensor 1270, and an input / output (I / O) interface 1280 coupled to each other as shown.

[0084] The application circuit 1230 may include circuits such as, but not limited to, one or more single-core or multi-core processors. The processor may include any combination of general-purpose processors and special-purpose processors, such as a graphics processor, an application processor. The processor may be coupled to a memory / storage device and configured to execute instructions stored in the memory / storage device to enable various applications and / or operating systems to run on the system. The communication system 1200 may execute program code that configures the application circuit 1230 to perform the above-mentioned instructions. Figures 1 to 7 The program code may reside in the application circuit 1230 or any suitable computer-readable medium and may be executed by the application circuit 1230 or any other suitable processor.

[0085] The baseband circuit 1220 may include circuits such as, but not limited to, one or more single-core or multi-core processors. The processor may include a baseband processor. The baseband circuit may handle various wireless control functions that may communicate with one or more wireless networks via RF circuits. The wireless control functions may include, but are not limited to, signal modulation, encoding, decoding, radio frequency shifting, etc. In some embodiments, the baseband circuit may provide communications compatible with one or more wireless technologies. For example, in some embodiments, the baseband circuit may support communications with the Evolved Universal Terrestrial Radio Access Network (EUTRAN) and / or other wireless metropolitan area networks (WMANs), wireless local area networks (WLANs), and wireless personal area networks (WPANs). An embodiment in which the baseband circuit is configured to support wireless communications of more than one wireless protocol may be referred to as a multimode baseband circuit.

[0086] In various embodiments, baseband circuitry 1220 may include circuitry that operates with signals that are not strictly considered to be at baseband frequencies. For example, in some embodiments, baseband circuitry may include circuitry that operates with signals having an intermediate frequency, which is between the baseband frequency and the radio frequency. RF circuitry 1210 may use modulated electromagnetic radiation through a non-solid medium to facilitate communication with a wireless network. In various embodiments, RF circuitry may include switches, filters, amplifiers, etc. to facilitate communication with the wireless network. In various embodiments, RF circuitry 1210 may include circuitry that operates with signals that are not strictly considered to be radio frequencies. For example, in some embodiments, RF circuitry may include circuitry that operates with signals having an intermediate frequency, which is between the baseband frequency and the radio frequency.

[0087] In various embodiments, the above description of Figures 1 to 7The transmitter circuit, control circuit or receiver circuit discussed in some embodiments may be embodied in whole or in part in one or more of the RF circuit, baseband circuit and / or application circuit. As used herein, "circuit" may refer to, be part of or include an application-specific integrated circuit (ASIC) that executes one or more software or firmware programs, an electronic circuit, a processor (shared processor, dedicated processor or processor group) and / or memory (shared memory, dedicated memory or memory group), a combinational logic circuit that provides the functionality and / or other suitable hardware components. In some embodiments, the electronic device circuit may be implemented in one or more software or firmware modules, or the functionality associated with the circuit may be implemented by one or more software or firmware modules. In some embodiments, some or all of the components of the baseband circuit, application circuit and / or memory / storage device may be implemented together on a system on a chip (SOC). The memory / storage device 1240 may be used to load and store data and / or instructions (for example, for the system). The memory / storage device in one embodiment may include any combination of suitable volatile memory (eg, dynamic random access memory (DRAM)) and / or non-volatile memory (eg, flash memory).

[0088] In various embodiments, the I / O interface 1280 may include one or more user interfaces and / or peripheral component interfaces, which are designed to enable a user to interact with the system, and these peripheral component interfaces are designed to enable peripheral component interaction with the system. The user interface may include, but is not limited to, a physical keyboard or keypad, a touchpad, a speaker, a microphone, etc. The peripheral component interface may include, but is not limited to, a non-volatile memory port, a universal serial bus (USB) port, an audio jack, and a power interface. In various embodiments, the sensor 1270 may include one or more sensing devices to determine environmental conditions and / or location information related to the system. In some embodiments, the sensor may include, but is not limited to, a gyroscope sensor, an accelerometer, a proximity sensor, an ambient light sensor, and a positioning unit. The positioning unit may also be part of a baseband circuit and / or an RF circuit, or the positioning unit interacts with the baseband circuit and / or the RF circuit to communicate with components of a positioning network (e.g., a global positioning system (GPS) satellite).

[0089] In various embodiments, display 1250 may include a display such as a liquid crystal display and a touch screen display. In various embodiments, communication system 1200 may be a mobile computing device such as, but not limited to, a laptop, a tablet, a netbook, an ultrabook, a smartphone, AR / VR glasses, etc. In various embodiments, the system may have more or fewer components and / or a different architecture. Where appropriate, the methods described herein may be implemented as a computer program. The computer program may be stored on a storage medium, such as a non-volatile storage medium.

[0090] It will be understood by those skilled in the art that each unit, algorithm, and step described and disclosed in the embodiments of the present disclosure is implemented using electronic hardware or a combination of computer software and electronic hardware. Whether the function is run in hardware or software depends on the application conditions and the design requirements of the technical solution. Those skilled in the art can use different methods to implement the functions of each specific application, and such implementation should not exceed the scope of this disclosure. It will be understood by those skilled in the art that since the workflows of the above-mentioned systems, devices, and units are basically the same, he / she can refer to the workflows of the systems, devices, and units in the above-mentioned embodiments. For ease of description and simplicity, these workflows will not be described again.

[0091] It should be understood that the systems, devices, and methods disclosed in the embodiments of the present disclosure can be implemented in other ways. The above embodiments are for illustrative purposes only. The division of units is based solely on logical functions, and other division methods can be used in implementation. Multiple units or components can be combined or integrated into another system. Certain features may also be omitted or skipped. On the other hand, the mutual coupling, direct coupling, or communicative coupling shown or discussed is achieved indirectly or communicatively through some ports, devices, or units in an electrical, mechanical, or other manner.

[0092] Units described as separate components may or may not be physically separate. Units shown may or may not be physical units, i.e., located in one place or distributed across multiple network units. Depending on the purpose of the embodiment, some or all of the units may be used. Furthermore, each functional unit in each embodiment may be integrated into a single processing unit, may be physically independent, or two or more units may be integrated into a single processing unit.

[0093] If the software functional unit is implemented, used and sold as a product, it can be stored in a readable storage medium in a computer. Based on this understanding, the technical solution proposed in the present disclosure can be basically or partially implemented in the form of a software product. Alternatively, a part of the technical solution that is beneficial to traditional technology can be implemented in the form of a software product. The software product in the computer is stored in a storage medium, including a plurality of commands for a computing device (e.g., a personal computer, a server or a network device) to run all or part of the steps disclosed in the embodiment of the present disclosure. The storage medium includes a USB disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a floppy disk or other types of media capable of storing program code.

[0094] While the present disclosure has been described in connection with what are considered to be the most practical and preferred embodiments, it should be understood that the disclosure is not limited to the disclosed embodiments, but is intended to cover various arrangements pursuant to the broadest interpretation of the appended claims.

Claims

1. A wireless communication method for inter-cell mobility, performed by a user equipment (UE), the method comprising: receiving, from a base station, a configuration of at least one candidate cell for inter-cell mobility; as well as An identification reference signal (RS) is configured in at least one transmission configuration indication (TCI) state of one of the at least one candidate cell and is associated with a physical cell identifier (PCID) of the one of the at least one candidate cell.

2. The method according to claim 1, wherein The at least one TCI state includes: at least one joint TCI state, at least one downlink DL TCI state and / or at least one uplink UL TCI state.

3. The method according to claim 2, wherein: One of the at least one joint TCI states includes: a TCI state identifier ID, one or two quasi co-located QCL configurations, a path loss RS, and multiple power control parameters.

4. The method according to claim 3, wherein: The reference signal for QCL or the path loss RS configured in the one joint TCI state in the at least one joint TCI state is associated with the PCID of the one candidate cell in the at least one candidate cell.

5. The method according to claim 2, wherein: One DL TCI state of the at least one DL TCI state includes: one TCI state and one or two quasi co-located QCL configurations.

6. The method according to claim 5, wherein: The reference signal for QCL configured in the one DL TCI state among the at least one DL TCI state is associated with the PCID of the one candidate cell among the at least one candidate cell.

7. The method according to claim 2, wherein: One of the at least one UL TCI states includes: a TCI state identifier ID, a path loss RS, an RS providing a reference for a UL spatial domain transmit Tx filter, and a plurality of UL power control parameters.

8. The method according to claim 7, wherein: A reference signal for the path loss RS or for a reference of a UL spatial domain Tx filter configured in the one UL TCI state among the at least one UL TCI state is associated with the PCID of the one candidate cell among the at least one candidate cell.

9. The method according to any one of claims 1 to 8, further comprising: The base station is instructed by a command to switch to the one candidate cell among the at least one candidate cell.

10. The method according to any one of claims 1 to 9, further comprising: The base station requests, through a command, to activate the at least one TCI state of the one candidate cell among the at least one candidate cell, and measures the quality of the RS of the one candidate cell among the at least one candidate cell.

11. The method according to any one of claims 1 to 9, further comprising: A command is received from the base station to activate the at least one TCI state of the one candidate cell among the at least one candidate cell.

12. The method according to any one of claims 9 to 11, wherein The command includes a Medium Access Control MAC Control Element CE command.

13. The method according to claim 12, wherein: The MAC CE command includes one or more of the following fields: an indicator of the one candidate cell among the at least one candidate cell; A first indicator, used to indicate an ID of a first combined TCI state in the at least one TCI state; A second indicator, used to indicate an ID of a second joint TCI state in the at least one TCI state; as well as The third indicator is used to indicate the ID of a third joint TCI state in the at least one TCI state.

14. The method according to claim 12, wherein: The MAC CE command includes one or more of the following fields: an indicator of the one candidate cell among the at least one candidate cell; A first indicator, used to indicate an ID of a first DL TCI state in the at least one TCI state; A second indicator, configured to indicate an ID of a second DL TCI state in the at least one TCI state; a third indicator, configured to indicate an ID of a third DL TCI state in the at least one TCI state; a fourth indicator, used to indicate an ID of a first UL TCI state in the at least one TCI state; a fifth indicator, used to indicate an ID of a second UL TCI state in the at least one TCI state; as well as A sixth indicator is used to indicate an ID of a third UL TCI state in the at least one TCI state.

15. The method according to claim 12, wherein: The MAC CE command includes one or more of the following fields: an indicator of the one candidate cell among the at least one candidate cell; A first indicator, used to indicate an ID of a combined TCI state in the at least one TCI state; A second indicator, used to indicate an ID of a DL TCI state among the at least one TCI state; as well as The third indicator is used to indicate an ID of a UL TCI state among the at least one TCI state.

16. A wireless communication method for inter-cell mobility, performed by a base station, the method comprising: sending a configuration of at least one candidate cell for inter-cell mobility to a user equipment UE; as well as Instruct the UE to identify a reference signal RS, where the RS is configured in at least one transmission configuration indication TCI state of one candidate cell among the at least one candidate cell and is associated with a physical cell identifier PCID of the one candidate cell among the at least one candidate cell.

17. The method according to claim 16, wherein The at least one TCI state includes: at least one joint TCI state, at least one downlink DL TCI state and / or at least one uplink UL TCI state.

18. The method according to claim 17, wherein One of the at least one joint TCI states includes a TCI state identifier ID, one or two quasi co-located QCL configurations, a path loss RS, and multiple power control parameters.

19. The method according to claim 18, wherein The reference signal for the QCL or for the path loss RS configured in the one joint TCI state among the at least one joint TCI state is associated with the PCID of the one candidate cell among the at least one candidate cell.

20. The method according to claim 17, wherein One DL TCI state of the at least one DL TCI state includes one TCI state and one or two quasi co-located QCL configurations.

21. The method according to claim 20, wherein The reference signal for QCL configured in the one DL TCI state among the at least one DL TCI state is associated with the PCID of the one candidate cell among the at least one candidate cell.

22. The method according to claim 17, wherein One of the at least one UL TCI states includes: a TCI state identifier ID, a path loss RS, an RS providing a reference for a UL spatial domain transmit Tx filter, and a plurality of UL power control parameters.

23. The method according to claim 22, wherein A reference signal for the path loss RS or for a reference of a UL spatial domain Tx filter configured in the one UL TCI state among the at least one UL TCI state is associated with a PCID of the one candidate cell among the at least one candidate cell.

24. The method according to any one of claims 16 to 23, further comprising instructing the UE to switch to the one candidate cell among the at least one candidate cell through a command.

25. The method according to any one of claims 16 to 24, further comprising requesting the UE to activate the at least one TCI state of the one candidate cell among the at least one candidate cell through a command, and measuring the quality of the RS of the one candidate cell among the at least one candidate cell.

26. The method according to any one of claims 16 to 25, further comprising sending a command to the UE to activate the at least one TCI state of the one candidate cell among the at least one candidate cell.

27. The method according to any one of claims 24 to 26, wherein The command includes a Medium Access Control MAC Control Element CE command.

28. The method according to claim 27, wherein The MAC CE command includes one or more of the following fields: an indicator of the one candidate cell among the at least one candidate cell; A first indicator, used to indicate an ID of a first combined TCI state in the at least one TCI state; A second indicator, used to indicate an ID of a second joint TCI state in the at least one TCI state; as well as The third indicator is used to indicate the ID of a third joint TCI state in the at least one TCI state.

29. The method according to claim 27, wherein The MAC CE command includes one or more of the following fields: an indicator of the one candidate cell among the at least one candidate cell; A first indicator, used to indicate an ID of a first DL TCI state in the at least one TCI state; A second indicator, configured to indicate an ID of a second DL TCI state in the at least one TCI state; a third indicator, configured to indicate an ID of a third DL TCI state in the at least one TCI state; a fourth indicator, used to indicate an ID of a first UL TCI state in the at least one TCI state; a fifth indicator, used to indicate an ID of a second UL TCI state in the at least one TCI state; as well as A sixth indicator is used to indicate an ID of a third UL TCI state in the at least one TCI state.

30. The method of claim 27, wherein: The MAC CE command includes one or more of the following fields: an indicator of the one candidate cell among the at least one candidate cell; A first indicator, used to indicate an ID of a combined TCI state in the at least one TCI state; A second indicator, used to indicate an ID of a DL TCI state among the at least one TCI state; as well as The third indicator is used to indicate an ID of a UL TCI state among the at least one TCI state.

31. A user equipment (UE), comprising: a receiver configured to receive, from a base station, a configuration of at least one candidate cell for inter-cell mobility; as well as An identifier is configured to identify a reference signal RS, wherein the RS is configured in at least one transmission configuration indication TCI state of one candidate cell among the at least one candidate cell and is associated with a physical cell identifier PCID of the one candidate cell among the at least one candidate cell.

32. A base station, comprising: a transmitter configured to send a configuration of at least one candidate cell for inter-cell mobility to a user equipment UE; as well as An indicator is configured to instruct the UE to identify a reference signal RS, wherein the RS is configured in at least one transmission configuration indication TCI state of one candidate cell in the at least one candidate cell and is associated with a physical cell identifier PCID of the one candidate cell in the at least one candidate cell.

33. A user equipment (UE), comprising: Memory; transceiver; as well as a processor coupled to the memory and the transceiver; The UE is configured to perform the method according to any one of claims 1 to 15.

34. A base station, comprising: Memory; transceiver; as well as a processor coupled to the memory and the transceiver; The base station is configured to perform the method according to any one of claims 16 to 30.

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