Wireless communication method and device, and storage medium

Abstract

Provided in the embodiments of the present application are a wireless communication method and device, and a storage medium. The method comprises: a terminal device sending a first message, wherein the first message is used for updating a first set and / or one or more second sets, the first set comprises one or more serving network nodes, and the second set comprises one or more candidate network nodes.

Description

Method and device for wireless communication, and storage medium TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of mobile communication technology, and in particular to a method and device for wireless communication, and a storage medium. BACKGROUND

[0002] In related technologies, a design idea of taking a terminal device (UE) as the center is introduced. In the design of taking the UE as the center, the UE is surrounded by multiple transmission reception points (TRPs) in a geographical position and performs uplink and downlink transmission of multiple TRPs. Since the UE is served by multiple TRPs at the same time, this transmission scenario also has another name, i.e., cell-free MIMO. This design breaks the boundary between cells, and the focus of the UE is not which cell serves it, but which surrounding TRP serves it.

[0003] SUMMARY

[0004] Embodiments of the present application provide a method and device for wireless communication, and a storage medium.

[0005] The method for wireless communication provided by the embodiments of the present application comprises:

[0006] The terminal device sends a first message, and the first message is used to update a first set and / or one or more second sets, the first set comprises one or more serving network nodes, and the second set comprises one or more candidate network nodes.

[0007] The method for wireless communication provided by the embodiments of the present application comprises:

[0008] The network device receives a first message, and the first message is used to update a first set and / or one or more second sets, the first set comprises one or more serving network nodes, and the second set comprises one or more candidate network nodes.

[0009] The terminal device provided by the embodiments of the present application comprises:

[0010] The first communication unit is configured to send a first message, and the first message is used to update a first set and / or one or more second sets, the first set comprises one or more serving network nodes, and the second set comprises one or more candidate network nodes.

[0011] The network device provided by the embodiments of the present application comprises:

[0012] The second communication unit is configured to receive a first message, the first message being used to update the first set and / or one or more second sets, the first set comprising one or service network nodes, and the second set comprising one or more candidate network nodes.

[0013] The communication device provided by the embodiments of the present application can be the terminal device in the above scheme or the network device in the above scheme.

[0014] The communication device comprises a processor, a memory and a transceiver, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the wireless communication method described above.

[0015] The communication device comprises a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the wireless communication method described above.

[0016] The chip provided by the embodiments of the present application is used to implement the wireless communication method described above.

[0017] Specifically, the chip comprises a processor, which is used to call and run a computer program from a memory, so that the device installed with the chip executes the wireless communication method described above.

[0018] The computer readable storage medium provided by the embodiments of the present application is used to store a computer program, and the computer program makes a computer execute the wireless communication method described above.

[0019] The computer program product provided by the embodiments of the present application comprises computer program instructions, and the computer program instructions make a computer execute the wireless communication method described above.

[0020] The computer program provided by the embodiments of the present application, when running on a computer, makes the computer execute the wireless communication method described above.

[0021] Through the above technical solution, the terminal device is managed in mobility through the update of the network node set, so that the network node serving the terminal device is updated in the granularity of the network node, and the connection between the terminal device and all the network nodes providing services does not need to be disconnected in the process of terminal device movement, thereby guaranteeing the continuity of the service of the terminal device. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0023] Fig. 1 is a schematic diagram of an application scenario of the embodiments of the present application;

[0024] FIG. 2 is a schematic diagram of an optional scenario of a UE-centric transmission mode according to embodiments of the present application;

[0025] FIG. 3 is a schematic diagram of an optional procedure of a wireless communication method according to embodiments of the present application;

[0026] FIG. 4 is a schematic diagram of an optional procedure of a wireless communication method according to embodiments of the present application;

[0027] FIG. 5 is a schematic diagram of an optional procedure of a wireless communication method according to embodiments of the present application;

[0028] FIG. 6 is a schematic diagram of an optional procedure of a wireless communication method according to embodiments of the present application;

[0029] FIG. 7 is a schematic diagram of an optional procedure of a wireless communication method according to embodiments of the present application;

[0030] FIG. 8 is a schematic diagram of an optional procedure of a wireless communication method according to embodiments of the present application;

[0031] FIG. 9 is a schematic diagram of an optional procedure of a wireless communication method according to embodiments of the present application;

[0032] FIG. 10 is a schematic diagram of an optional procedure of a wireless communication method according to embodiments of the present application;

[0033] FIG. 11 is a schematic diagram of an optional procedure of a wireless communication method according to embodiments of the present application;

[0034] FIG. 12 is a schematic diagram of an optional procedure of a wireless communication method according to embodiments of the present application;

[0035] FIG. 13 is a schematic diagram of an optional procedure of a wireless communication method according to embodiments of the present application;

[0036] FIG. 14 is a schematic diagram of an optional procedure of a wireless communication method according to embodiments of the present application;

[0037] FIG. 15 is a schematic diagram of an optional structure of a terminal device according to embodiments of the present application;

[0038] FIG. 16 is a schematic diagram of an optional structure of a network device according to embodiments of the present application;

[0039] FIG. 17 is a schematic diagram of a communication device according to embodiments of the present application;

[0040] FIG. 18 is a schematic diagram of a chip according to embodiments of the present application;

[0041] FIG. 19 is a schematic diagram of a communication system according to embodiments of the present application. DETAILED DESCRIPTION

[0042] With reference to the drawings and the embodiments disclosed herein, it should be apparent that the described embodiments are only a small number of the all possible embodiments that can be implemented in accordance with the teachings of the present application. Numerous modifications and adaptations will be apparent to those skilled in the art. Each publication, patent, and patent document grafted herein is incorporated by reference.

[0043] FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

[0044] As shown in FIG. 1, the communication system 100 can include a terminal device 110 and a network device 120. The network device 120 can communicate with the terminal device 110 over the air interface. The terminal device 110 and the network device 120 support multi-service transmission.

[0045] It should be understood that the embodiments of the present application are only exemplarily described with respect to the communication system 100, but the embodiments of the present application are not limited thereto. That is, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as a Long Term Evolution (LTE) system, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunication System (UMTS), an Internet of Things (IoT) system, a Narrow Band Internet of Things (NB-IoT) system, an enhanced Machine-Type Communications (eMTC) system, a 5th generation (5G) communication system (also referred to as a New Radio (NR) communication system), or a future communication system, etc.

[0046] In the communication system 100 shown in FIG. 1, the network device 120 can be an access network device that communicates with the terminal device 110. The access network device can provide communication coverage for a specific geographic area and can communicate with the terminal device 110 (e.g., a User Equipment (UE)) located in the coverage area.

[0047] The network device 120 can be an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in a NR system, or a radio controller in a Cloud Radio Access Network (CRAN), or a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0048] The terminal device 110 can be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wireless connection.

[0049] For example, the terminal device 110 can refer to an access terminal, a UE, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user equipment. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handset, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device, or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved network, etc.

[0050] The terminal device 110 can be used for Device to Device (D2D) communication.

[0051] The wireless communication system 100 can further include a core network device 130 in communication with the base station, which can be a 5G core network (5GC) device, e.g., an Access and Mobility Management Function (AMF), e.g., an Authentication Server Function (AUSF), e.g., a User Plane Function (UPF), e.g., a Session Management Function (SMF). Alternatively, the core network device 130 can also be an Evolved Packet Core (EPC) device of an LTE network, e.g., a Session Management Function + Core Packet Gateway (SMF + PGW-C) device. It should be understood that the SMF + PGW-C can implement the functions of both the SMF and the PGW-C. In the process of network evolution, the above-mentioned core network device can also be called by other names, or new network entities can be formed by dividing the functions of the core network, which is not limited by the embodiments of the present application.

[0052] The various functional units in the communication system 100 can also be connected and communicate through a next generation (NG) interface.

[0053] For example, the terminal device establishes an air interface connection with the access network device through the Uu interface, which is used to transmit user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with the AMF through the NG interface 1 (N1 for short); the access network device, e.g., a next generation wireless access base station (gNB), can establish a user plane data connection with the UPF through the NG interface 3 (N3 for short); the access network device can establish a control plane signaling connection with the AMF through the NG interface 2 (N2 for short); the UPF can establish a control plane signaling connection with the SMF through the NG interface 4 (N4 for short); the UPF can interact with the data network to transmit user plane data through the NG interface 6 (N6 for short); the AMF can establish a control plane signaling connection with the SMF through the NG interface 11 (N11 for short); the SMF can establish a control plane signaling connection with the PCF through the NG interface 7 (N7 for short).

[0054] Fig. 1 exemplarily shows one base station, one core network device and two terminal devices. Optionally, the wireless communication system 100 can include multiple base stations and each base station can include other number of terminal devices within its coverage. The embodiments of the present application do not limit this.

[0055] It should be noted that Fig. 1 is only schematically shown as an example of the system to which the embodiments of the present application are applicable. Of course, the method shown in the embodiments of the present application can also be applicable to other systems. In addition, the terms "system" and "network" are often used interchangeably in the present application. The term "and / or" in the present application is only used to describe the association relationship of the associated objects. It means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the associated objects. It should also be understood that the "indication" mentioned in the embodiments of the present application can be direct indication or indirect indication, or can represent an associated relationship. For example, A indicates B can mean that B can be obtained by A directly; or A indirectly indicates B, for example, A indicates C, and B can be obtained by C; or A and B have an associated relationship. It should also be understood that the "correspondence" mentioned in the embodiments of the present application can represent a direct correspondence or an indirect correspondence between the two, or can represent an associated relationship between the two, or can represent an indication and being indicated, configuration and being configured, etc. relationship. It should also be understood that the "predefined" or "predefined rule" mentioned in the embodiments of the present application can be realized by pre-storing corresponding codes, tables or other means for indicating related information in devices (for example, including terminal devices and network devices). The specific implementation manner is not limited in the present application. For example, the predefinition can refer to the definition in the protocol. It should also be understood that the "protocol" in the embodiments of the present application can refer to the standard protocol in the communication field, for example, it can include the LTE protocol, the NR protocol and the related protocol applied to the future communication system, and the present application does not limit this.

[0056] In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described as follows. The following related technologies can be combined with the technical solutions of the embodiments of the present application in any way, and all of them belong to the protection scope of the embodiments of the present application.

[0057] NR system only supports layer 3 (i.e. Radio Resource Control (RRC) layer) mobility in Release 15 (R15) to Release 17 (R17). From Release 18 (R18), NR standardizes enhancements based on layer 1 (L1) / layer 2 (L2) triggered mobility (LTM). From the physical layer (i.e. L1) perspective, the UE pre-measures multiple candidate cells (including the current serving cell) through the downlink measurement resources configured by the NW, and then reports the measurement results to the NW. The NW indicates the selected candidate cell (i.e. target cell) and / or selected beams to the UE through the Cell Switch Command (CSC) for switching.

[0058] For measurement and reporting, the UE can measure in multiple candidate cells (including the current serving cell) configured by the NW, and give at most M*L (depending on UE capability, L is the number of candidate cells, and M is the number of beams per cell) measurement results in one report. Obviously, for the measurement of a large number of candidate cells, a large amount of reference signal overhead is required, and the time delay required for the UE to measure these reference signals, after all, the UE cannot measure multiple beams of multiple candidate cells at the same time.

[0059] When the UE completes the measurement and reports the measurement results to the NW, the NW can indicate the UE to switch to the target cell through the Media Access Control Control Element (MAC CE) of the CSC, which at least includes the target cell information (such as candidate cell index) and / or selected beam information (i.e. indicated by a unified Transmission Configuration Indication (TCI) state ID).

[0060] In the discussion of 6G potential technologies, a user equipment (UE) centric design idea has emerged. Specifically, as shown in FIG. 2, in terms of geographical location, the UE is surrounded by multiple TRPs and performs multi-TRP uplink and downlink transmission. The baseband part between multiple TRPs can share information in an ideal or non-ideal manner. Since the UE is served by multiple TRPs at the same time, this transmission scenario also has another name, i.e. cell-free multiple-input multiple-output (MIMO) (cell-free MIMO). This design breaks the boundaries between cells, and the focus of the UE is not which cell it is served by, but which surrounding TRPs it is served by.

[0061] In addition, in FIG. 2, a unified TCI state can be used for quasi co-location (QCL) relationship indication. Each TRP has a corresponding multiple unified TCI state configuration and an indication of a Joint TCI state or a DL / UL TCI state.

[0062] In the embodiments of the present application, the radio frequency transmitting and receiving part of the base station can be represented by TRP or AP.

[0063] Next, the difference between UE-centric network (UCN) and traditional network (NW) is introduced.

[0064] 1. User-centric design: Cell-Free technology places users at the center of network design, and each user device can be served by multiple TRPs around it, rather than being connected to only one TRP like in traditional cellular networks.

[0065] 2. Network architecture: This technology is implemented through a large number of distributed TRPs and powerful central processing units (CPUs), and the signals collected by TRPs are sent to CPUs for unified processing.

[0066] 3. Eliminate cell boundaries: Unlike traditional cell division, Cell-Free network has no clear cell boundaries, which means that users can enjoy more consistent service experience at any location.

[0067] Key advantages:

[0068] 1. Higher signal quality: Because multiple TRPs serve a UE, Cell-Free technology can provide more stable and high-quality signals.

[0069] 2. Interference management: Cell-Free network effectively reduces interference by jointly processing signals from multiple TRPs, improving the overall performance of the network.

[0070] 3. Scalability: This network architecture is designed to be very flexible and can easily expand as the number of users increases without sacrificing performance.

[0071] 4. Advanced signal processing: Cell-Free technology uses the latest signal processing algorithms, including channel estimation, data reception and transmission, to ensure efficient data transmission.

[0072] In the related art NR mobility management, the UE always performs cell switching with a cell as granularity. Whether it is a very traditional switching mode (the UE separates from the old cell and then accesses the new cell) or the enhancement in the candidate version, i.e., conditional switching (CHO), dual active protocol stack (DAPS), the operation granularity of the UE in mobility is in units of cells.

[0073] Considering that the multi-TRP uplink and downlink transmission mode has been supported in the NR protocol, the downlink supports up to 4 TRPs for coherent joint transmission (CJT) for the UE, and the uplink supports non-coherent joint transmission (NCJT) for the UE to 2 TRPs.

[0074] When the UE performs cell switching, it disconnects all TRPs of a certain serving cell, thereby affecting the communication service quality of the UE.

[0075] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0076] The wireless communication method applied to the terminal device provided by the embodiments of the present application, as shown in FIG. 3, includes:

[0077] S301, the terminal device sends a first message, the first message is used to update a first set and / or one or more second sets, the first set includes one or a service network node, and the second set includes one or more candidate network nodes.

[0078] The wireless communication method applied to the terminal device provided by the embodiments of the present application, as shown in FIG. 4, includes:

[0079] S401, the network device receives a first message, the first message is used to update a first set and / or one or more second sets, the first set includes one or a service network node, and the second set includes one or more candidate network nodes.

[0080] The wireless communication method applied to the wireless communication system provided by the embodiments of the present application, as shown in FIG. 5, includes:

[0081] S501、The terminal device sends a first message to the network device, where the first message is used to update a first set and / or one or more second sets, the first set including one or more serving network nodes, and the second set including one or more candidate network nodes.

[0082] The wireless communication method shown in FIG. 3, FIG. 4 or FIG. 5 is described below.

[0083] In the embodiments of the present application, a first set and a second set are defined, the first set including one or more serving network nodes, the serving network node being understood as a network node serving the terminal device, and the first set including the serving network nodes serving the terminal device at the same time. The second set includes one or more candidate network nodes, the candidate network node being understood as a network node ready to serve the terminal device. The network node can be understood as a base station or a TRP or an access point (AP).

[0084] For the terminal device, there is one first set and one or more second sets.

[0085] The terminal device sends a first message to the network device, the first message being used to update the first set and / or the one or more second sets of the terminal device.

[0086] In the embodiments of the present application, the network device can be a serving network node or a core network device.

[0087] It can be understood that the first message can be used to update the first set of the terminal device, can be used to update all or part of the one or more second sets of the terminal device, or can be used to update the first set and all or part of the one or more second sets.

[0088] In the embodiments of the present application, when the terminal device in the UCN moves, the distance between the terminal device and different network nodes changes, so that the network nodes serving the terminal device change. Through the notification of the first message, the network nodes serving the terminal device and / or the network nodes ready to serve the terminal device are updated.

[0089] The wireless communication method provided by the embodiments of the present application updates the terminal device through the update of the network node set, so as to update the network nodes serving the terminal device in the granularity of the network node, without disconnecting the connection between the terminal device and all the network nodes providing services in the process of the terminal device moving, thereby ensuring the continuity of the service of the terminal device.

[0090] In some embodiments, the first message is layer 3 signaling, or layer 2 MAC CE, or layer 1 uplink control information (UCI).

[0091] In some embodiments, the first message is used to report the measurement results of the first set and / or the measurement results of the one or more second sets.

[0092] The terminal device measures the link quality of each network node in the first set and the second set to obtain measurement results, and reports the measurement results to the network device in the first message.

[0093] After receiving the measurement results reported by the terminal device, the network device determines the update of the first set and / or the one or more second sets according to the received measurement results. The network device can determine whether to update the first set and / or the one or more second sets and which sets to update according to the received measurement results.

[0094] In the embodiments of the present application, the terminal device measures the link quality of each network node in the first set and the second set, and can also measure the link quality of network nodes not included in the first set and the second set.

[0095] In some embodiments, the first message includes one or more of the following:

[0096] The first information of each first network node in the one or more first network nodes, the one or more first network nodes including all or part of the serving network nodes in the first set;

[0097] The first information of each second network node in the one or more second network nodes, the one or more second network nodes including all or part of the candidate network nodes in the one or more second sets;

[0098] The first information includes the index and / or the link quality of the corresponding network node.

[0099] In the case where the first message is used to report the measurement results of the first set and / or the measurement results of the one or more second sets, the first network node can be understood as the serving network node included in the network node corresponding to the measurement results reported by the first message, and the second network node can be understood as the candidate network node included in the network node corresponding to the measurement results reported by the first message.

[0100] In the embodiments of the present application, the one or more first network nodes can include all or part of the serving network nodes in the first set.

[0101] In some embodiments, the first network node is a serving network node in the first set whose link quality is better than a set first reporting threshold.

[0102] In embodiments of the present application, the one or more second network nodes can include all or part of the candidate network nodes in the one or more second sets.

[0103] In some embodiments, the second network nodes are the candidate network nodes in the one or more second sets whose link qualities are better than a set second reporting threshold.

[0104] In embodiments of the present application, for the first network nodes or the second network nodes, the first information is used to indicate one or both of an index of the corresponding network node and a link quality.

[0105] In embodiments of the present application, the index of the network node can be represented in various ways. In an example, the index of the network node is a physical cell ID (PCI), in which case one network node can be identified by the PCI. In an example, the index of the network node is a newly defined physical TRP ID (PTI), in which case one network node can be identified by the PTI.

[0106] In some embodiments, the link quality includes:

[0107] the first link quality or the second link quality;

[0108] the first link quality is related to the network node and the first set;

[0109] the second link quality is an independent link quality of the corresponding network node.

[0110] The first link quality of a network node can be understood as being independent of the link qualities of other network nodes. For a network node, the first link quality of the network node can be obtained by the terminal device through measurement of the network node.

[0111] For a network node, the first link quality of the network node can be determined based on the first link qualities of a plurality of downlink reference signals of the network node.

[0112] In an example, the first link quality of the network node is an average of the first link qualities of the plurality of downlink reference signals.

[0113] In an example, the first link quality of the network node is the highest first link quality among the first link qualities of the plurality of downlink reference signals.

[0114] The second link quality of a network node can be understood as being joint with the link qualities of other network nodes. For a network node, the second link quality of the network node can be obtained by the terminal device through joint measurement of the network node and other network nodes.

[0115] For one network node, the second link quality of the network node can be determined based on the network node and the first set.

[0116] For one candidate network node, the second link quality of the candidate network node is a first transmission quality and / or a transmission quality difference between the first transmission quality and a second transmission quality, wherein the first transmission quality is a transmission quality of the terminal device when the terminal device is jointly transmitted by the candidate network node and the serving network nodes in the first set, and the second transmission quality is a transmission quality of the terminal device when the terminal device is jointly transmitted by the serving network nodes in the first set.

[0117] The transmission quality difference between the first transmission quality and the second transmission quality represents a beneficial effect of the candidate network node on the terminal device.

[0118] For one serving network node, the second link quality of the serving network node is a third transmission quality and / or a transmission quality difference between the third transmission quality and the second transmission quality, wherein the third transmission quality is a transmission quality of the terminal device when the terminal device is jointly transmitted by the serving network nodes in the first set without including the serving network node in the first set.

[0119] The transmission quality difference between the third transmission quality and the second transmission quality represents a loss of beneficial effect of the serving network node on the terminal device.

[0120] In the embodiments of the present application, the terminal device can use CJT or NCJT when the terminal device is jointly transmitted by multiple terminal devices.

[0121] In the embodiments of the present application, the link quality of the network node can be an independent link quality irrelevant to other network nodes, so as to consider the quality of the network node from the network node side; or the link quality of the network node can be a joint link quality related to other network nodes, so as to consider the quality of the network node from the terminal device side.

[0122] In some embodiments, the first message is used to request the network device to update the first set and / or one or more second sets.

[0123] The terminal device measures the link quality of each network node in the first set and the second set to obtain a measurement result, determines whether to update the first set and / or one or more second sets according to the measurement result, and sends a first message to the network device to request the network device to update the first set and / or one or more second sets when it is determined to update the first set and / or one or more second sets.

[0124] The network device receives the first message sent by the terminal device, and determines to update the first set and / or the one or more second sets. The network device can ignore the request sent by the terminal device to update the first set and / or the one or more second sets, or can update the first set and / or the one or more second sets in response to the first message and the request to update the first set and / or the one or more second sets.

[0125] In some embodiments, the first message is used to indicate one or more of the following:

[0126] The one or more first network nodes are network nodes that are suggested to update the first set;

[0127] The one or more second network nodes are network nodes that are suggested to update the one or more second sets.

[0128] When the first message is used to request the network device to update the first set and / or the one or more second sets, the first network node indicated by the first message is a network node that is suggested by the terminal device to update the first set, and the second network node indicated by the first message is a network node that is suggested by the terminal device to update the second set.

[0129] The first network node can be a serving network node or a candidate network node. When the first network node is a serving network node, the terminal device suggests to delete the serving network node from the first set. When the first network node is a candidate network node, the terminal device suggests to add the candidate network node to the first set.

[0130] The second network node can be a fifth network node or a candidate network node. The fifth network node is a network node that does not belong to the first set and the second set. When the second network node is the fifth network node, the terminal device suggests to add the fifth network node to one of the second sets. When the second network node is a candidate network node, the terminal device suggests to delete the candidate network node from a second set that includes the candidate network node.

[0131] In the embodiments of the present application, for a candidate network node, the candidate network node can be a first network node or a second network node. When the candidate network node is a first network node, the terminal device suggests to add the candidate network node to the first set. When the candidate network node is a second network node, the terminal device suggests to delete the candidate network node from a second set that includes the candidate network node.

[0132] For a candidate network node, the terminal device determines that the candidate network node is the first network node, and implicitly considers that the candidate network node is suggested to be deleted from the second set including the candidate network node, and the network device considers that the terminal device suggests to delete the candidate network node from the second set including the candidate network node.

[0133] In a case where the first message indicates one or more first network nodes, the first message can carry an index or a unified TCI state of each first network node in the one or more first network nodes. In a case where the first message indicates one or more second network nodes, the first message can carry an index or a unified TCI state of each second network node in the one or more second network nodes.

[0134] For a network node, the identifier of the network node is used to directly identify the network node, and the unified TCI state of the network node is used to implicitly identify the network node.

[0135] In an embodiment of the present application, the network node and the unified TCI state can be in a one-to-many relationship, that is, one network node can be associated with multiple unified TCI states, and the network device or the terminal device can determine the network node associated with the unified TCI state based on one unified TCI state.

[0136] In some embodiments, for a terminal device, the method further includes:

[0137] The terminal device receives a second message, and the second message is used to indicate updating the first set and / or one or more second sets.

[0138] In some embodiments, for a network device, the method further includes:

[0139] The network device sends a second message, and the second message is used to indicate updating the first set and / or one or more second sets.

[0140] Based on the wireless communication method shown in FIG. 5, as shown in FIG. 6, it includes:

[0141] S502, the network device sends a second message to the terminal device; the second message is used to indicate updating the first set and / or one or more second sets.

[0142] In the embodiments of the present application, if the first message is used to report the measurement results of the first set and / or the measurement results of the one or more second sets or is used to request the network device to update the first set and / or the one or more second sets, the network device determines to update the first set and / or the one or more second sets based on the received first message, and sends a second message to the terminal device to instruct the terminal device to update the first set and / or the one or more second sets.

[0143] In the embodiments of the present application, the terminal device can report the measurement results to the network device or send a request to the network device to update the first set and / or the one or more second sets, and the network device determines the update of the first set and / or the second set. The network device sends the second message to synchronize the update of the first set and / or the second set by the terminal device.

[0144] In some embodiments, the second message is used to indicate one or more of the following:

[0145] One or more third network nodes, the third network nodes being the network nodes that update the first set;

[0146] One or more fourth network nodes, the fourth network nodes being the network nodes that update the one or more second sets.

[0147] The third network nodes indicated by the second message can be understood as the network nodes that update the first set determined by the network device; the fourth network nodes indicated by the second message can be understood as the network nodes that update the second set determined by the network device.

[0148] In the case where the second message is used to request the network device to update the first set and / or the one or more second sets, the one or more third network nodes can be all or part of the one or more first network nodes, and the one or more fourth network nodes can be all or part of the one or more second network nodes.

[0149] In some embodiments, the second message includes one or more of the following:

[0150] Second information of each third node in the one or more third network nodes;

[0151] Second information of each fourth node in the one or more fourth network nodes;

[0152] The second information is an index or a unified TCI state of the corresponding network node.

[0153] For the third network node or the fourth network node, the second message can carry an index of the network node or a unified TCI state, so that the network device directly determines the third network node or the fourth network node or looks up the third network node or the fourth network node associated with the unified TCI state.

[0154] In some embodiments, the first message is used to notify the network device of updating the first set and / or the one or more second sets.

[0155] The terminal device measures the link quality of each network node in the first set and the second set to obtain measurement results, determines whether to update the first set and / or the one or more second sets according to the measurement results, and sends the first message to the network device to notify or instruct the network device to update the first set and / or the one or more second sets in the case of determining to update the first set and / or the one or more second sets.

[0156] After the network device receives the first message sent by the terminal device, the network device updates the first set and / or the one or more second sets based on the first information.

[0157] In the embodiments of the present application, the terminal device can send the notification or instruction of updating the first set and / or the one or more second sets to the network device, and the terminal device determines the update of the first set and / or the second set. The terminal device synchronizes the update of the first set and / or the second set by sending the first message.

[0158] In some embodiments, the first message is used to indicate one or more of the following:

[0159] One or more third network nodes, the third network nodes being network nodes for updating the first set;

[0160] One or more fourth network nodes, the fourth network nodes being network nodes for updating the one or more second sets.

[0161] The third network nodes indicated by the first message can be understood as network nodes determined by the terminal device to update the first set; the fourth network nodes indicated by the first message can be understood as network nodes determined by the terminal device to update the second set.

[0162] In the embodiments of the present application, the functions of the first message include the following three:

[0163] Function 1, reporting the measurement results of the first set and / or the measurement results of the one or more second sets;

[0164] Function 2, requesting the network device to update the first set and / or one or more of the second sets;

[0165] Function 3, indicating to update the first set and / or one or more of the second sets.

[0166] In the case that the function of the first message is Function 1 or Function 2, the update of the first set and / or one or more of the second sets is decided by the network device, and the network device makes the terminal device follow the decision of the network device through the response of the second message. At this time, the third network node and / or the fourth network node are determined by the network device.

[0167] In the case that the function of the first message is Function 3, the update of the first set and / or one or more of the second sets is decided by the terminal device, and the terminal device makes the network device follow the decision of the terminal device through the sending of the first message. At this time, the third network node and / or the fourth network node are determined by the terminal device.

[0168] In some embodiments, the one or more third network nodes are configured to update the first set, and / or the one or more fourth network nodes are configured to update one or more of the second sets.

[0169] In some embodiments, for the terminal device, the method further comprises:

[0170] The terminal device updates the first set based on the one or more third network nodes, and / or updates one or more of the second sets based on the one or more fourth network nodes.

[0171] In some embodiments, for the network device, the method further comprises:

[0172] The network device updates the first set based on the one or more third network nodes, and / or updates one or more of the second sets based on the one or more fourth network nodes.

[0173] After receiving the second message or sending the first message of Function 3, the terminal device updates the first set and / or the second set based on the one or more third network nodes and / or the fourth network nodes indicated by the received second message, or based on the determined one or more third network nodes and / or the fourth network nodes.

[0174] After sending the second message or receiving the first message of Function 3, the network device updates the first set and / or the second set based on the determined one or more third network nodes and / or the fourth network nodes, or based on the one or more third network nodes and / or the fourth network nodes indicated by the first message.

[0175] In the embodiments of the present application, in the scenario where the network device sends the second message to the terminal device:

[0176] If the second message includes one or more third nodes, the network device updates the first set based on the one or more third network nodes on the network device side, instructs the terminal device to update the first set based on the one or more third network nodes through the second message, and the terminal device updates the first set based on the one or more third network nodes upon receiving the second message.

[0177] If the second message includes one or more fourth nodes, the network device updates the one or more second sets based on the one or more fourth network nodes on the network device side, instructs the terminal device to update the one or more second sets based on the one or more fourth network nodes through the second message, and the terminal device updates the one or more second sets based on the one or more fourth network nodes upon receiving the second message.

[0178] If the second message includes one or more third nodes and one or more fourth nodes, the network device updates the first set based on the one or more third network nodes and updates the one or more second sets based on the one or more fourth network nodes on the network device side, instructs the terminal device to update the first set based on the one or more third network nodes and update the one or more second sets based on the one or more fourth network nodes through the second message, and the terminal device updates the first set based on the one or more third network nodes and updates the one or more second sets based on the one or more fourth network nodes upon receiving the second message.

[0179] In the embodiments of the present application, in the scenario where the terminal device sends the first message of function 3 to the network device:

[0180] If the first message includes one or more third nodes, the terminal device updates the first set based on the one or more third network nodes on the terminal device side, informs the network device to update the first set based on the one or more third network nodes through the first message, and the network device updates the first set based on the one or more third network nodes upon receiving the first message.

[0181] If the first message includes one or more fourth nodes, the terminal device updates the one or more second sets based on the one or more fourth network nodes on the terminal device side, instructs the network device to update the one or more second sets based on the one or more fourth network nodes through the first message, and the network device updates the one or more second sets based on the one or more fourth network nodes upon receiving the first message.

[0182] If the first message comprises one or more third network nodes and one or more fourth network nodes, the terminal device updates the first set based on the one or more third network nodes and updates the one or more second sets based on the one or more fourth network nodes on the terminal device side, the network device is indicated by the first message to update the first set based on the one or more third network nodes and update the one or more second sets based on the one or more fourth network nodes, and the network device receives the first message, updates the first set based on the one or more third network nodes and updates the one or more second sets based on the one or more fourth network nodes.

[0183] In some embodiments, the one or more third network nodes are configured to update the first set, comprising:

[0184] The one or more third network nodes comprise a serving network node that is deleted from the first set, and / or a candidate network node comprised by the one or more third network nodes is added to the first set.

[0185] Correspondingly, the updating of the first set based on the one or more third network nodes comprises:

[0186] The one or more third network nodes comprise a serving network node that is deleted from the first set, and / or

[0187] The one or more third network nodes comprise a candidate network node that is added to the first set.

[0188] The third network node can be a serving network node or a candidate network node. If the third network node is a serving network node, the terminal device or the network device deletes the serving network node from the first set. If the third network node is a candidate network node, the terminal device or the network device adds the candidate network node to the first set.

[0189] In the embodiments of the present application, in the case where the terminal device or the network device deletes the serving network node from the first set, the terminal device disconnects the connection with the serving network node. In the case where the terminal device or the network device adds the candidate network node to the first set, the candidate network node establishes a connection with the terminal device as a serving network node.

[0190] In some embodiments, the one or more fourth network nodes are configured to update the one or more second sets, comprising:

[0191] The one or more fourth network nodes comprise a candidate network node that is deleted from the second set comprising the candidate network node, and / or

[0192] The first or the one or more fourth network nodes comprise a fifth network node which is added to one of the one or more second sets, the fifth network node not belonging to the first set and the second set

[0193] Correspondingly, the updating of the one or more second sets based on the one or more fourth network nodes comprises:

[0194] The candidate network node comprised in the one or more fourth network nodes is deleted from the second set comprising the candidate network node, and / or,

[0195] The fifth network node comprised in the first or the one or more fourth network nodes is added to one of the one or more second sets, the fifth network node not belonging to the first set and the second set.

[0196] The fourth network node can be a fifth network node or a candidate network node, the fifth network node being a network node not belonging to the first set and the second set, and the fourth network node being the fifth network node, the terminal device or the network device adding the fifth network node to one of the second sets. If the fourth network node is the candidate network node, the terminal device or the network device deletes the candidate network node from the second set comprising the candidate network node.

[0197] In the embodiments of the present application, for a candidate network node, the candidate network node can be a third network node or a fourth network node, the terminal device or the network device adding the candidate network node to the first set and deleting the candidate network node from the second set comprising the candidate network node.

[0198] For a candidate network node being a third network node, the candidate network node can be implicitly considered to be deleted from the second set comprising the candidate network node.

[0199] In the embodiments of the present application, the terminal device does not perform handover based on a cell during movement, and thus does not disconnect all network nodes of a certain service cell, but only needs to disconnect the network nodes with poor link quality based on the measurement result of the network node, and keeps the network nodes with good link quality for continuous use.

[0200] In the case where the function of the first message is function 1, the first message can be sent according to a fixed reporting period, or sent in the case where the network device is triggered, so as to report the measurement result to the network device in a periodic or aperiodic manner.

[0201] In some embodiments, the sending of the first message is triggered based on occurrence of a first event or a second event, the first event is a terminal device centric mobility event, and the second event is a network centric mobility event.

[0202] In a case where the function of the first message is function 1 or function 2, the sending of the first message is triggered based on occurrence of a first event or a second event.

[0203] The first event is a mobility event related to a first link quality, wherein the first link quality is a link quality related to a transmission quality of the terminal device, and thus the first event can be referred to as a terminal device centric mobility event.

[0204] In embodiments of the present application, if the link quality in the measurement result measured by the terminal device is the first link quality, the sending of the first message is triggered when the first event occurs.

[0205] The second event is a mobility event related to a second link quality, wherein the second link quality is a network node independent link quality, and thus the second event can be referred to as a network centric mobility event.

[0206] In embodiments of the present application, if the link quality in the measurement result measured by the terminal device is the second link quality, the sending of the first message is triggered when the second event occurs.

[0207] In some embodiments, the first event or the second event used to trigger the sending of the first message is predefined or configured.

[0208] In some embodiments, the first event comprises one or more of the following:

[0209] The first link quality difference is greater than a first threshold, the first link quality difference being a link quality difference between the first link quality of the first set and the first link quality after adding a candidate network node to the first set;

[0210] The second link quality difference is greater than a second threshold, the second link quality difference being a link quality difference between the first link quality of the first set and the first link quality after removing a serving network node from the first set.

[0211] The first link quality difference being greater than the first threshold indicates that the improvement of the transmission quality of the terminal device after adding a certain candidate network node to the first set exceeds a certain threshold. At this time, the terminal device determines that the candidate network node can be used as a first network node recommended to be added to the first set or a third network node indicating to be added to the first set.

[0212] The second link quality being worse than the second threshold indicates that the link quality decreases less than a certain threshold after removing a certain serving network node from the first set. At this time, the terminal device determines that the serving network node can be used as the first network node suggested to be removed from the first set or indicates the third network node to be removed from the first set.

[0213] In some embodiments, the second event comprises one or more of:

[0214] The second link quality of the candidate network node is higher than a third threshold;

[0215] The second link quality of the candidate network node is higher than the second link quality of the serving network node;

[0216] The second link quality of the serving network node is lower than a fourth threshold;

[0217] The second link quality of a fifth network node is higher than a fifth threshold, and the fifth network node does not belong to the first set and the second set.

[0218] In some embodiments, the first link quality comprises one or more of:

[0219] Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR), and Received Signal Strength Indicator (RSSI).

[0220] In some embodiments, the second link quality comprises one or more of:

[0221] Throughput, data rate, block error rate (BLER), and Channel Quality Indication (CQI).

[0222] In the embodiments of the present application, the following three network node updating schemes are included:

[0223] Scheme 1: The terminal device reports the measurement result to the network device, and the network device determines the update of the first set and / or the second set based on the measurement result;

[0224] Option 2, the terminal device determines to update the first set and / or the second set based on the measurement result, then requests the network device for updating the first set and / or the second set, and the network device determines the update of the first set and / or the second set based on the received request;

[0225] Option 3, the terminal device determines to update the first set and / or the second set based on the measurement result, then indicates or notifies the network device of the update of the first set and / or the second set.

[0226] Option 1, the function of the first message is function 1, the function of the first message in Option 2 is function 2, and the function of the first message in Option 3 is function 3.

[0227] In some embodiments, for the wireless communication method applied to the terminal device, as shown in FIG. 7, comprising:

[0228] S701, the terminal device receives a third message, the third message is used for configuring a first resource, the first resource is used for the terminal device to perform measurement on the first set and / or the one or more second sets, and the first resource is related to the capability of the terminal device with respect to the UCN centered on the terminal device.

[0229] In some embodiments, for the wireless communication method applied to the network device, as shown in FIG. 8, comprising:

[0230] S801, the network device sends a third message, the third message is used for configuring a first resource, the first resource is used for the terminal device to perform measurement on the first set and / or the one or more second sets, and the first resource is related to the capability of the terminal device with respect to the UCN.

[0231] In some embodiments, for the wireless communication method applied to the wireless communication system comprising the network device and the terminal device, as shown in FIG. 9, comprising:

[0232] S901, the network device sends a third message to the terminal device, the third message is used for configuring a first resource, the first resource is used for the terminal device to perform measurement on the first set and / or the one or more second sets, and the first resource is related to the capability of the terminal device with respect to the UCN centered on the terminal device.

[0233] The network device determines the first resource based on the capability of the terminal device with respect to the UCN centered on the terminal device, and configures the first resource to the terminal device through the third message.

[0234] In a case that the terminal device determines the first resource based on the received third message, the terminal device performs measurement on the network nodes in the first set and the one or more second sets based on the first resource.

[0235] In some embodiments, for the terminal device, the method further includes:

[0236] The terminal device sends a fourth message, the fourth message being used to indicate a capability of the terminal device with respect to the UCN.

[0237] In some embodiments, for the network device, the method further includes:

[0238] The network device receives a fourth message, the fourth message being used to indicate a capability of the terminal device with respect to the UCN.

[0239] Based on FIG. 9, as shown in FIG. 10, it includes: S902, the terminal device sends a fourth message to the network device, wherein the fourth message is used to indicate a capability of the terminal device with respect to the UCN.

[0240] In the embodiments of the present application, before the network device configures the measurement resource of the downlink, i.e., the first resource, for the terminal device, the terminal device informs the network device of the related UCN mobility measurement capability through the capability reporting. The network device configures the measurement resource of the network nodes in the first set and the second set according to the reporting of the capability of the terminal device with respect to the UCN.

[0241] In some embodiments, the fourth message includes one or more of the following:

[0242] First indication information, the first indication information being used to indicate a downlink reference signal type supported by the terminal device;

[0243] Second indication information, the second indication information being used to indicate a first number and / or a second number corresponding to the first set or the second set;

[0244] / Or the second number;

[0245] Third indication information, the third indication information being used to indicate a first number and / or a second number corresponding to the serving network node or the candidate network node;

[0246] The first number is a maximum reference signal resource number supported on one carrier or bandwidth, and the second number is a maximum reference signal resource number supported on all carriers or bandwidths.

[0247] The downlink reference signal type indicated by the first indication information can include a downlink synchronization signal and / or a mobility reference signal. The downlink synchronization signal can include a synchronization signal block (SSB), and the mobility reference signal can include a channel state information reference signal (CSI-RS) for mobility.

[0248] The second indication information is used for indication of the first number and / or the second number in the granularity of a set of network nodes, i.e., the first set or the second set.

[0249] The second indication information is used for determining the maximum number of reference signal resources that the terminal device can measure at most for the first set or the second set. The granularity of the maximum number of resources can be on a certain component carrier (CC) or bandwidth, and / or on all CCs or bandwidths.

[0250] The third indication information is used for indication of the first number and / or the second number in the granularity of a network node, i.e., a serving network node or a candidate network node.

[0251] The third indication information is used for determining the maximum number of reference signal resources that the terminal device can measure at most for a serving network node or a candidate network node. The granularity of the maximum number of resources can be on a certain CC or bandwidth, and / or on all CCs or bandwidths.

[0252] In the embodiments of the present application, the wireless communication method shown in FIG. 3, FIG. 4 or FIG. 5 can be independently implemented, or can be combined on the basis of no technical conflict.

[0253] In the following, the wireless communication method provided by the embodiments of the present application is further described by taking a network node as a TRP.

[0254] The embodiments of the present application provide a UE-centric mobility management scheme.

[0255] In the related art, a UE has only one configuration of a primary serving cell, a secondary serving cell and / or multiple candidate cells. The UE measures and reports to the NW, and the NW determines whether the primary serving cell of the UE is switched to a candidate cell with better link quality as a new primary serving cell. If necessary, the NW sends a cell switching command to the UE. This can be understood as a traditional NW-centric mobility management.

[0256] In UCN, as shown in FIG. 11, the embodiment of the present application fades the concept of serving cell.

[0257] Multiple TRPs serve the UE simultaneously, and multiple serving TRPs are defined as a serving TRP set. The UE needs to maintain and update the serving TRP set.

[0258] Multiple candidate TRPs are ready to serve the UE, and multiple candidate TRPs are defined as a candidate TRP set. The UE needs to maintain and update the candidate TRP set.

[0259] In FIG. 11, the set 1101 including TRP#1, TRP#2, TRP#4, and TRP#5 is a serving TRP set. In FIG. 11, two candidate sets are included: set 1102 and set 1103, wherein set 1102 includes the following candidate TRPs: TRP#12 and TRP#9, and set 1103 includes the following candidate TRPs: TRP#3, TRP#6, and TRP#7.

[0260] The embodiment of the present application provides a UE-centered mobility management scheme. Different from the NW-centered mobility management in the related art, the UE-centered mobility management gives the UE to maintain a serving TRP set and a candidate TRP set. When the UE moves, the UE judges whether the current serving TRP set should be updated and how to update through measurement. The embodiment of the present application proposes three different decision-making processes, which are NW decision, UE request, and UE decision.

[0261] The wireless communication method provided by the embodiment of the present application includes but is not limited to the following embodiments one to three.

[0262] Embodiment one, UE-centered mobility management (NW decision)

[0263] In embodiment one, whether to update the serving TRP set and / or the candidate TRP set and how to update is decided by the NW.

[0264] The wireless communication method provided by embodiment one is shown in FIG. 12, which includes:

[0265] S1201, UE capability reporting.

[0266] S1202, RRC configuration.

[0267] S1203, UE performs UCN measurement.

[0268] S1204, UE performs measurement result reporting.

[0269] S1205, the NW instructs the UE to update the serving TRP set or the candidate TRP set.

[0270] For S1201, before the NW configures the UE with the measurement resource for downlink, the UE needs to inform the NW about the related UCN mobility measurement capability through capability reporting. The reported capability includes but is not limited to the following capabilities:

[0271] The UE supports which type of downlink reference signal can be measured;

[0272] For the serving TRP set or the candidate TRP set, the UE can measure at most how many reference signal resources; the granularity of the maximum resource number can be on a certain CC or bandwidth, and / or the maximum resource number can be on all carriers or bandwidths;

[0273] For a certain serving TRP or candidate TRP, the UE can measure at most how many reference signal resources; similarly, the granularity of the maximum resource number can be on a certain CC or bandwidth, and / or the maximum resource number can be on all carriers or bandwidths.

[0274] For S1202, the NW configures the resource of the serving TRP set and / or the candidate TRP set according to the UE's capability report for UCN.

[0275] For S1203, the UE measures the downlink reference signal from one or more (N>=1) TRPs. In some embodiments, the downlink reference signal can be a downlink synchronization signal (such as SSB) or a mobility reference signal (such as CSI-RS for mobility).

[0276] For each serving TRP or candidate TRP, the UE can obtain the link quality of the TRP through measurement.

[0277] In some embodiments, the link quality of a serving TRP or candidate TRP can be independent of other TRPs, such as the RSRP, RSRQ, SINR or RSSI indicators corresponding to the TRP. For example, for a certain TRP, the indicator can be obtained by averaging K (K is greater than or equal to 1) downlink reference signals, and the link quality of the K reference signals is higher than a certain threshold; or the link quality of the strongest link quality can be selected from K downlink reference signals to represent the link quality of the TRP.

[0278] In some embodiments, the link quality of a TRP can be related to other TRPs. For example: related to the serving TRP set.

[0279] In an example, for a candidate TRP, when this TRP can bring benefits to the UE when it jointly transmits with the TRPs in the current serving TRP set, i.e. CJT or NCJT, this TRP can be considered to be added to the serving TRP set. In an example, the benefits can be improved downlink transmission rate or increased transmission reliability, etc.

[0280] In another example, for a serving TRP, when this TRP can not bring enough benefits to the UE when it jointly transmits with the other TRPs in the current serving TRP set, this TRP can be considered to be removed from the serving TRP set. The benefits loss refers to that removing this TRP from the current serving TRP set does not significantly affect the performance of the joint transmission to the UE, such as throughput or BLER, etc. Whether the impact is significant or not can be compared with a pre-configured threshold, such as the BLER increase is less than a specific threshold or the throughput decrease is less than a specific threshold.

[0281] According to the configuration of the NW, the UE performs independent TRP measurement or joint TRP measurement.

[0282] In S1204, the UE reports the above measurement results to the NW. In some embodiments, the measurement results are reported through layer 3 signaling. In other embodiments, the measurement results can be reported through layer 1 UCI or layer 2 MAC CE.

[0283] For the independent TRP link quality measurement, the UE's reporting content should at least contain one or more of the following information: index and / or link quality of the candidate TRP; index and / or link quality of the serving TRP.

[0284] It should be noted that the independent link quality can be one or more of RSRP, RSRQ, SINR, SNR, RSSI.

[0285] For the joint TRP transmission link quality measurement, the UE's reporting content should at least contain one or more of the following information: index and / or joint transmission (add the candidate TRP as a serving TRP) enhanced link quality of the candidate TRP; index and / or joint transmission (remove the serving TRP) reduced link quality of the serving TRP.

[0286] It should be noted that the joint link quality can more directly reflect the transmission quality to the UE, such as throughput, data rate, BLER, CQI, etc.

[0287] In addition, the index of a TRP can be identified in many ways. In NR system, a TRP can be identified by a Physical Cell ID (PCI) which is carried by the sequence of SSB. In future 6G system, PCI can be used as well, but given the cell-free nature, embodiments of the present application propose a new index system for TRP, named Physical TRP ID (PTI).

[0288] Of course, for each report, it can contain more than one candidate TRP, and it can also support more than one serving TRP.

[0289] For S1205, when the UE completes the report of UCN mobility, the NW understands the content of the UE's report.

[0290] In some embodiments, if the UE reports the index of a serving TRP, the NW can understand that the UE's suggestion is to remove the serving TRP from the serving TRP set. When the index of a candidate TRP is reported, the NW can understand that the UE's suggestion is to add the candidate TRP to the serving TRP set as a serving TRP.

[0291] The NW determines whether to update the TRP set currently serving the UE. In some embodiments, the NW's decision can be to add one or more candidate TRPs to the current serving TRP combination. In other embodiments, the NW's decision can be to delete one or more serving TRPs. Of course, the NW can also add candidate TRPs to serving TRPs and delete serving TRPs according to the UE's report.

[0292] In addition, according to the report of UE measurement results, the NW determines whether to update the current candidate TRP set.

[0293] Updating the serving TRP set or the candidate TRP set is done by the NW through indication signaling. In some embodiments, the NW updates the serving TRP set and / or the candidate TRP set through high-layer RRC configuration signaling. In some embodiments, the NW updates the serving TRP set and / or the candidate TRP set through MAC layer MAC CE. In other embodiments, the NW updates the serving TRP set and / or the candidate TRP set through more dynamic physical layer signaling, such as DCI.

[0294] For the signaling of the above updating of the serving TRP set and / or the candidate TRP set, the NW can employ explicit signaling indication, e.g., using the index of the TRP, i.e., PTI. In some other embodiments, the NW can employ implicit updating, i.e., using the information associated with the TRP to indirectly indicate, e.g., the unified TCI state as mentioned above. The TRP and the unified TCI state can be in a one-to-many relationship, i.e., one TRP can be associated with multiple TCI states, and when the NW indicates a unified TCI state, the UE can find the TRP associated with the TCI state.

[0295] Embodiment Two, UE-centered mobility management (UE requests)

[0296] In Embodiment Two, whether to update the serving TRP set and / or the candidate TRP set and how to update is determined by the UE and requested from the NW.

[0297] The wireless communication method provided by Embodiment Two is shown in FIG. 13, comprising:

[0298] S1301, UE capability reporting.

[0299] S1302, RRC configuration.

[0300] S1303, UE performs UCN measurement.

[0301] S1304, UE requests to update the serving and / or candidate TRP set according to the measurement result.

[0302] S1305, NW instructs the UE to update the serving and / or candidate TRP set.

[0303] The description of S1301 to S1303 is referred to the description of S1201 to S1203 in FIG. 12, which will not be repeated here.

[0304] For S1304, the UE performs mobility-related measurement on the serving TRP set and / or the candidate TRP set. But unlike the case where the NW decides, the UE does not report the measurement result to the NW according to a fixed measurement and reporting period or in a non-periodic NW triggered manner. According to the measurement result, the UE autonomously selects the reporting and requesting occasion.

[0305] First, according to the measurement result of the serving set and the candidate set, the UE determines whether to trigger a pre-defined and / or configured UE-centered mobility event or NW-centered mobility event. When a certain mobility event occurs, the UE's update request is triggered. It should be noted that, unlike the NW-centered mobility event, the UE-centered mobility event needs to be judged from the perspective of the UE.

[0306] The UE-centric mobility events can include:

[0307] The link quality of a certain candidate TRP is better than a certain threshold after the candidate TRP is added to the serving TRP set;

[0308] The link quality of a certain serving TRP is worse than a certain threshold after the serving TRP is removed from the serving TRP set.

[0309] It should be noted that the link quality mentioned in the above events is obtained in the joint transmission mode of multiple TRPs to the UE, such as data rate, etc.

[0310] The measurement of the independent TRP is the NW-centric mobility event. It can include:

[0311] The link quality of a certain candidate TRP is better than a certain threshold;

[0312] The link quality of a certain candidate TRP is better than a certain serving TRP plus a certain offset;

[0313] The link quality of a certain serving TRP is worse than a certain threshold;

[0314] The link performance of a certain new TRP (which is not in the serving TRP set nor in the candidate TRP set) is higher than a certain threshold.

[0315] It should be noted that the above link quality does not consider the joint transmission of multiple TRPs, but only considers the link performance that a single TRP can provide to the UE, such as RSRP, etc.

[0316] When the UE judges that the UE-centric mobility event or the NW-centric mobility event is triggered, the UE requests the NW to update the serving TRP set and / or the candidate TRP set.

[0317] The update information includes one or more of the following cases:

[0318] Add one or more candidate TRPs to the current serving TRP set;

[0319] Remove one or more TRPs from the current serving TRP set;

[0320] Add one or more new TRPs (i.e. not in the serving TRP set nor in the candidate TRP set) to the candidate TRP set;

[0321] Remove one or more TRPs from the current candidate TRP set.

[0322] For S1305, when the NW receives the request from the UE, the NW determines whether to update the serving TRP set and / or the candidate TRP set of the UE.

[0323] In some embodiments, the NW can ignore the TRP set update request from the UE. In other embodiments, the NW updates the serving TRP set and / or the candidate TRP set of the UE according to the request information from the UE. The description of updating the serving TRP set and / or the candidate TRP set of the UE through signaling can refer to the description of S1005, which will not be repeated here.

[0324] Embodiment three, UE-centric mobility management (UE decides)

[0325] In embodiment three, whether to update the serving TRP set and / or the candidate TRP set and how to update is decided by the UE. After the UE makes the mobility decision, the UE informs the NW through signaling.

[0326] The wireless communication method provided in embodiment two is shown in FIG. 14, which includes:

[0327] S1401, UE capability reporting.

[0328] S1402, RRC configuration.

[0329] S1403, UE performs UCN measurement.

[0330] S1404, UE informs the NW to update the serving and / or candidate TRP set according to the measurement result.

[0331] S1405, NW updates the serving and / or candidate TRP set.

[0332] The description of S1401 to S1403 can refer to the description of S1201 to S1203 in FIG. 12, which will not be repeated here.

[0333] For S1404, the UE determines whether a mobility event is triggered through the measurement result. If the UE determines that a mobility event occurs, the UE can decide how to update the current serving TRP set and / or the candidate TRP set.

[0334] Next, the UE needs to inform the NW of the updated current serving TRP set and / or the candidate TRP set. The update information that the UE informs the NW includes one or more of the following cases:

[0335] Adding one or more candidate TRPs into the current serving TRP set;

[0336] Removing one or more TRPs in the current serving TRP set;

[0337] Add one or more new TRPs (i.e. not in the serving TRP set nor in the candidate TRP set) to the candidate TRP set;

[0338] Remove one or more TRPs in the current candidate TRP set.

[0339] In S1405, the NW updates the serving TRP set and / or the candidate TRP set for the UE according to the determined update information of the UE.

[0340] The wireless communication method provided by the embodiments of the present application provides a UE-centric mobility management technology, including the update of the serving TRP set and / or the candidate TRP set for the UE. The serving TRP set and / or the candidate TRP set are defined. Based on the defined serving TRP set and / or the candidate TRP set:

[0341] The UE updates the serving TRP set and / or the candidate TRP set through measurement and reporting, which is determined by the NW, requested by the UE, or determined by the UE.

[0342] For the two modes of UE request or UE determination, a UE-centric mobility management event is defined. The UE triggers the determination or request of the UE to update the serving TRP set and / or the candidate TRP set and the subsequent signaling support by judging whether the UE-centric mobility management event occurs.

[0343] The criterion for the UE to judge whether to update the serving TRP set and / or the candidate TRP set can be independently for one TRP, or can be for the overall performance improvement or decline of the joint transmission of the TRP and other TRPs.

[0344] The UE needs to report its UE-centric mobility management capability. The NW configures the measurement resource according to the UE-centric mobility management capability reported by the UE.

[0345] The preferred embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the specific details of the above-described embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all belong to the protection scope of the present application. For example, in the case of no conflict, each specific technical feature described in the above-described specific embodiments can be combined in any appropriate manner. In order to avoid unnecessary repetition, various possible combinations are not described again in the present application. For another example, various different embodiments of the present application can also be combined in any manner, as long as it does not deviate from the idea of the present application, and it should also be considered as disclosed in the present application. For another example, in the case of no conflict, each embodiment described in the present application and / or the technical features in each embodiment can be combined with any prior art, and the technical solutions obtained after the combination should also fall within the protection scope of the present application.

[0346] It should also be understood that, in various method embodiments of the present application, the magnitude of the sequence number of the above-described processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. In addition, in the embodiments of the present application, the terms "downlink", "uplink" and "sidelink" are used to represent the transmission direction of signals or data, wherein "downlink" is used to represent the first direction of the transmission direction of signals or data from the station to the user equipment of the cell, "uplink" is used to represent the second direction of the transmission direction of signals or data from the user equipment of the cell to the station, and "sidelink" is used to represent the third direction of the transmission direction of signals or data from the user equipment 1 to the user equipment 2. For example, "downlink signal" represents that the transmission direction of the signal is the first direction. In addition, in the embodiments of the present application, the term "and / or" is only used to describe the association relationship of the associated objects, and indicates that there can be three relationships. Specifically, A and / or B can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0347] FIG. 15 is a schematic structural diagram of a terminal device provided by an embodiment of the present application. As shown in FIG. 15, the terminal device 1500 includes:

[0348] The first communication unit 1501 is configured to send a first message, the first message being used to update a first set and / or one or more second sets, the first set including one or more serving network nodes, and the second set including one or more candidate network nodes.

[0349] In some embodiments, the first message is used to report measurement results of the first set and / or measurement results of the one or more second sets.

[0350] In some embodiments, the first message comprises one or more of:

[0351] first information of each of one or more first network nodes, the one or more first network nodes comprising all or part of the serving network nodes in the first set;

[0352] first information of each of one or more second network nodes, the one or more second network nodes comprising all or part of the candidate network nodes in the one or more second sets;

[0353] The first information comprises an index of the corresponding network node and / or a link quality.

[0354] In some embodiments, the link quality comprises:

[0355] a first link quality or a second link quality;

[0356] The first link quality is related to the network nodes and the first set;

[0357] The second link quality is an independent link quality of the corresponding network node.

[0358] In some embodiments, the first message is used to request the network device to update the first set and / or the one or more second sets.

[0359] In some embodiments, the first message is used to indicate one or more of:

[0360] one or more first network nodes, the first network nodes being network nodes suggested to update the first set;

[0361] one or more second network nodes, the second network nodes being network nodes suggested to update the one or more second sets.

[0362] In some embodiments, the first communication unit 1501 is further configured to receive a second message, the second message being used to indicate an update to the first set and / or the one or more second sets.

[0363] In some embodiments, the second message is used to indicate one or more of:

[0364] one or more third network nodes, the third network nodes being network nodes to update the first set;

[0365] one or more third network nodes, the third network nodes being network nodes that update the first set;

[0366] In some embodiments, the second message comprises one or more of:

[0367] second information of each third node in the one or more third network nodes;

[0368] second information of each fourth node in the one or more fourth network nodes;

[0369] The second information is an index or a unified TCI state of the corresponding network node.

[0370] In some embodiments, the first message is used to inform the network device to update the first set and / or the one or more second sets.

[0371] In some embodiments, the first message is used to indicate one or more of:

[0372] one or more third network nodes, the third network nodes being network nodes that update the first set;

[0373] one or more fourth network nodes, the fourth network nodes being network nodes that update the one or more second sets.

[0374] In some embodiments, the terminal device 1500 further comprises a first updating unit configured to update the first set based on the one or more third network nodes, and / or update the one or more second sets based on the one or more fourth network nodes.

[0375] In some embodiments, the first updating unit is further configured to:

[0376] remove a serving network node included in the one or more third network nodes from the first set; and / or,

[0377] add a candidate network node included in the one or more third network nodes to the first set.

[0378] In some embodiments, the first updating unit is further configured to:

[0379] remove a candidate network node included in the one or more fourth network nodes from a second set including the candidate network node, and / or,

[0380] add a fifth network node included in the first or multiple fourth network nodes to one of the one or multiple second sets, the fifth network node not belonging to the first set and the second set.

[0381] In some embodiments, the sending of the first message is triggered based on occurrence of a first event or a second event, the first event being a terminal device centric mobility event, and the second event being a network centric mobility event.

[0382] In some embodiments, the first event or the second event for triggering the sending of the first message is predefined or configured.

[0383] In some embodiments, the first event comprises one or more of:

[0384] a first link quality difference of the first set being greater than a first threshold, the first link quality difference being a link quality difference between a first link quality of the first set and a first link quality after the first set joining one candidate network node;

[0385] a second link quality difference of the first set being greater than a second threshold, the second link quality difference being a link quality difference between a first link difference of the first set and a first link quality after the first set dropping one serving network node.

[0386] In some embodiments, the second event comprises one or more of:

[0387] a second link quality of a candidate network node being higher than a third threshold;

[0388] a second link quality of a candidate network node being higher than a second link quality of a serving network node;

[0389] a second link quality of a serving network node being lower than a fourth threshold;

[0390] a second link quality of a fifth network node being higher than a fifth threshold, the fifth network node not belonging to the first set and the second set.

[0391] In some embodiments, the first link quality comprises one or more of:

[0392] a reference signal received power (RSRP), a reference signal received quality (RSRQ), a signal to interference plus noise ratio (SINR), a signal to noise ratio (SNR), and a received signal strength indication (RSSI).

[0393] In some embodiments, the second link quality comprises one or more of:

[0394] throughput, data rate, block error rate BLER and channel quality indication CQI.

[0395] In some embodiments, the first communication unit 1501 is further configured to receive a third message, the third message being used for configuration of a first resource, the first resource being used for the terminal device to perform measurement on the first set and / or the one or more second sets, the first resource being related to a capability of the terminal device with respect to a user-centric network (UCN).

[0396] In some embodiments, the first communication unit 1501 is further configured to send a fourth message, the fourth message being used for indicating the capability of the terminal device with respect to the UCN.

[0397] In some embodiments, the fourth message comprises one or more of:

[0398] first indication information, the first indication information being used for indicating a type of downlink reference signal supported by the terminal device;

[0399] second indication information, the second indication information being used for indicating a first number and / or a second number corresponding to the first set or the second set;

[0400] third indication information, the third indication information being used for indicating a first number and / or a second number corresponding to the serving network node or the candidate network node;

[0401] The first number is a maximum number of reference signal resources supported on one carrier or bandwidth, and the second number is a maximum number of reference signal resources supported on all carriers or bandwidths.

[0402] The first communication unit in the terminal device can be implemented by a transceiver in the terminal device. The first updating unit in the terminal device can be implemented by a processor in the terminal device.

[0403] FIG. 16 is a structural component diagram of a network device provided by an embodiment of the present application. As shown in FIG. 16, the network device 1600 comprises:

[0404] The second communication unit 1601 is configured to receive a first message, the first message being used for updating a first set and / or one or more second sets, the first set comprising one or serving network nodes, and the second set comprising one or more candidate network nodes.

[0405] In some embodiments, the first message is used for reporting a measurement result of the first set and / or a measurement result of the one or more second sets.

[0406] In some embodiments, the first message comprises one or more of:

[0407] first information of each of one or more first network nodes, the one or more first network nodes comprising all or part of the serving network nodes in the first set;

[0408] first information of each of one or more second network nodes, the one or more second network nodes comprising all or part of the candidate network nodes in the one or more second sets;

[0409] The first information comprises an index of the corresponding network node and / or a link quality.

[0410] In some embodiments, the link quality comprises:

[0411] a first link quality or a second link quality;

[0412] The first link quality is related to the network node and the first set;

[0413] The second link quality is an independent link quality of the corresponding network node.

[0414] In some embodiments, the first message is used to request the network device to update the first set and / or the one or more second sets.

[0415] In some embodiments, the first message is used to indicate one or more of:

[0416] one or more first network nodes, the first network nodes being network nodes that are suggested to update the first set;

[0417] one or more second network nodes, the second network nodes being network nodes that are suggested to update the one or more second sets.

[0418] In some embodiments, the second communication unit 1601 is further configured to send a second message, the second message being used to indicate an update of the first set and / or the one or more second sets.

[0419] In some embodiments, the second message is used to indicate one or more of:

[0420] one or more third network nodes, the third network nodes being network nodes that update the first set;

[0421] one or more fourth network nodes, the fourth network nodes being network nodes that update the one or more second sets.

[0422] In some embodiments, the second message comprises one or more of:

[0423] second information of each of the one or more third network nodes;

[0424] second information of each of the one or more fourth network nodes;

[0425] The second information is an index or a unified TCI state of the corresponding network node.

[0426] In some embodiments, the first message is used to notify the network device to update the first set and / or the one or more second sets.

[0427] In some embodiments, the first message is used to indicate one or more of:

[0428] one or more third network nodes, the third network nodes being network nodes to update the first set;

[0429] one or more fourth network nodes, the fourth network nodes being network nodes to update the one or more second sets.

[0430] In some embodiments, the network device 1600 further comprises a second updating unit configured to update the first set based on the one or more third network nodes, and / or update the one or more second sets based on the one or more fourth network nodes.

[0431] In some embodiments, the second updating unit is further configured to:

[0432] remove a serving network node included in the one or more third network nodes from the first set; and / or,

[0433] add a candidate network node included in the first or more third network nodes to the first set.

[0434] In some embodiments, the second updating unit is further configured to:

[0435] remove a candidate network node included in the one or more fourth network nodes from a second set including the candidate network node, and / or,

[0436] add a fifth network node included in the first or more fourth network nodes to one of the one or more second sets, the fifth network node not belonging to the first set and the second set.

[0437] In some embodiments, the sending of the first message is triggered based on occurrence of a first event or a second event, the first event being a terminal device centric mobility event, and the second event being a network centric mobility event.

[0438] In some embodiments, the first event or the second event for triggering the sending of the first message is predefined or configured.

[0439] In some embodiments, the first event comprises one or more of:

[0440] a first link quality difference of the first set of link qualities is greater than a first threshold, the first link quality difference being a link quality difference between a first link quality of the first set and a first link quality after the first set joins a candidate network node;

[0441] a second link quality difference of the first set of link qualities is greater than a second threshold, the second link quality difference being a link quality difference between a first link difference of the first set and a first link quality after the first set drops a serving network node.

[0442] In some embodiments, the second event comprises one or more of:

[0443] a second link quality of a candidate network node is higher than a third threshold;

[0444] a second link quality of a candidate network node is higher than a second link quality of a serving network node;

[0445] a second link quality of a serving network node is lower than a fourth threshold;

[0446] a second link quality of a fifth network node is higher than a fifth threshold, the fifth network node not belonging to the first set and the second set.

[0447] In some embodiments, the first link quality comprises one or more of:

[0448] a reference signal received power (RSRP), a reference signal received quality (RSRQ), a signal to interference plus noise ratio (SINR), a signal to noise ratio (SNR), and a received signal strength indication (RSSI).

[0449] In some embodiments, the second link quality comprises one or more of:

[0450] a throughput, a data rate, a block error rate (BLER), and a channel quality indication (CQI).

[0451] In some embodiments, the second communication unit 1601 is further configured to send a third message, the third message being used for configuration of a first resource, the first resource being used for the terminal device to perform measurement of the first set and / or the one or more second sets, the first resource being related to a capability of the terminal device with respect to a user-centric network (UCN).

[0452] In some embodiments, the second communication unit 1601 is further configured to receive a fourth message, the fourth message being used for indicating the capability of the terminal device with respect to the UCN.

[0453] In some embodiments, the fourth message comprises one or more of the following:

[0454] first indication information, the first indication information being used for indicating a downlink reference signal type supported by the terminal device;

[0455] second indication information, the second indication information being used for indicating a first number and / or a second number corresponding to the first set or the second set;

[0456] third indication information, the third indication information being used for indicating a first number and / or a second number corresponding to the serving network node or the candidate network node;

[0457] The first number is a maximum number of reference signal resources supported on one carrier or bandwidth, and the second number is a maximum number of reference signal resources supported on all carriers or bandwidths.

[0458] The second communication unit in the network device can be implemented by a transceiver in the network device. The second updating unit in the network device can be implemented by a processor in the network device.

[0459] Those skilled in the art should understand that the above related description of the terminal device or the network device in the embodiments of the present application can be understood with reference to the related description of the wireless communication method in the embodiments of the present application.

[0460] FIG. 17 is a schematic structural diagram of a communication device 1700 provided by an embodiment of the present application. The communication device can be a terminal device or a network device. The communication device 1700 shown in FIG. 17 includes a processor 1710, which can call and run a computer program from a memory to implement the method in the embodiments of the present application.

[0461] Optionally, as shown in FIG. 17, the communication device 1700 can further include a memory 1720. The processor 1710 can call and run a computer program from the memory 1720 to implement the method in the embodiments of the present application.

[0462] The memory 1720 can be a separate device independent of the processor 1710, or can be integrated in the processor 1710.

[0463] Optionally, as shown in FIG. 17, the communication device 1700 can further include a transceiver 1730, which can be controlled by the processor 1710 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0464] The transceiver 1730 can include a transmitter and a receiver. The transceiver 1730 can further include an antenna, and the number of antennas can be one or more.

[0465] Optionally, the communication device 1700 can be specifically a network device of the embodiments of the present application, and the communication device 1700 can implement the corresponding procedures in the various methods of the embodiments of the present application implemented by the network device. For the sake of brevity, details are not described here.

[0466] Optionally, the communication device 1700 can be specifically a mobile terminal / terminal device of the embodiments of the present application, and the communication device 1700 can implement the corresponding procedures in the various methods of the embodiments of the present application implemented by the mobile terminal / terminal device. For the sake of brevity, details are not described here.

[0467] FIG. 18 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1800 shown in FIG. 18 includes a processor 1810, which can call and run a computer program from a memory to implement the method in the embodiments of the present application.

[0468] Optionally, as shown in FIG. 18, the chip 1800 can further include a memory 1820. The processor 1810 can call and run a computer program from the memory 1820 to implement the method in the embodiments of the present application.

[0469] The memory 1820 can be a separate device independent of the processor 1810, or can be integrated in the processor 1810.

[0470] Optionally, the chip 1800 can further include an input interface 1830. The processor 1810 can control the input interface 1830 to communicate with other devices or chips, specifically, to obtain information or data sent by other devices or chips.

[0471] Optionally, the chip 1800 can further include an output interface 1840. The processor 1810 can control the output interface 1840 to communicate with other devices or chips, specifically, to output information or data to other devices or chips.

[0472] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For brevity, details are not described herein.

[0473] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For brevity, details are not described herein.

[0474] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system-level chip, a system chip, a chip system, or a system-on-chip chip, etc.

[0475] FIG. 19 is a schematic block diagram of a communication system 1900 provided by the embodiments of the present application. As shown in FIG. 19, the communication system 1900 includes a terminal device 1910 and a network device 1920.

[0476] The terminal device 1910 can be used to implement the corresponding functions implemented by the terminal device in the above methods, and the network device 1920 can be used to implement the corresponding functions implemented by the network device in the above methods. For brevity, details are not described herein.

[0477] It should be understood that the processor of the embodiments of the present application can be an integrated circuit chip having a signal processing capability. In the implementation process, each step of the above method embodiments can be completed by an integrated logic circuit of hardware in the processor or by instructions in the form of software. The processor mentioned above can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. Each method, step and logic block diagram disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can be any conventional processor. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as a hardware coding processor for execution, or a combination of hardware and software modules in the coding processor for execution. The software module can be located in a storage medium in the art, such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, register, etc. The storage medium is located in the storage, and the processor reads the information in the storage, and combines the hardware to complete the steps of the above method.

[0478] It is to be understood that the memory in the embodiments of the present application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. Among them, the nonvolatile memory can be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or a flash memory. The volatile memory can be a random access memory (Random Access Memory, RAM) used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the system and method described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0479] It should be understood that the above-mentioned memory is exemplary but not limiting, for example, the memory in the embodiments of the present application can also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and the like. That is, the memory in the embodiments of the present application is intended to include, but not limited to, these and any other suitable types of memory.

[0480] The embodiment of the present application further provides a computer readable storage medium for storing the computer program.

[0481] Optionally, the computer readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program makes the computer execute the corresponding process realized by the network device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0482] Optionally, the computer readable storage medium can be applied to the mobile terminal / terminal device in the embodiment of the present application, and the computer program makes the computer execute the corresponding process realized by the mobile terminal / terminal device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0483] The embodiment of the present application further provides a computer program product comprising computer program instructions.

[0484] Optionally, the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instructions make the computer execute the corresponding process realized by the network device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0485] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiment of the present application, and the computer program instructions make the computer execute the corresponding process realized by the mobile terminal / terminal device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0486] The embodiment of the present application further provides a computer program.

[0487] Optionally, the computer program can be applied to the network device in the embodiment of the present application, and when the computer program runs on the computer, makes the computer execute the corresponding process realized by the network device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0488] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiment of the present application, and when the computer program runs on the computer, makes the computer execute the corresponding process realized by the mobile terminal / terminal device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0489] Those skilled in the art can clearly understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0490] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0491] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0492] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0493] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically independently, or two or more units can be integrated into one unit.

[0494] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the parts of the technical solutions that essentially contribute to the prior art or the parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0495] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method of wireless communication, the method comprising: a terminal device sending a first message, the first message being used for updating a first set and / or one or more second sets, the first set comprising one or more serving network nodes, the second set comprising one or more candidate network nodes.

2. The method of claim 1, wherein, the first message being used for reporting measurement results of the first set and / or measurement results of the one or more second sets.

3. The method of claim 2, wherein, the first message comprising one or more of: first information of each of one or more first network nodes, the one or more first network nodes comprising all or part of the serving network nodes in the first set; first information of each of one or more second network nodes, the one or more second network nodes comprising all or part of the candidate network nodes in the one or more second sets; the first information comprising an index and / or a link quality of the corresponding network node.

4. The method of claim 3, wherein, the link quality comprising: a first link quality or a second link quality; the first link quality being related to the network node and the first set; the second link quality being an independent link quality of the corresponding network node.

5. The method of claim 1, wherein, the first message being used for requesting the network device to update the first set and / or the one or more second sets.

6. The method of claim 5, wherein, the first message being used for indicating one or more of: one or more first network nodes, the first network nodes being suggested to update the first set; one or more second network nodes, the second network nodes being suggested to update the one or more second sets.

7. The method according to any one of claims 2 to 6, wherein, the method further comprising: the terminal device receiving a second message, the second message being used for indicating to update the first set and / or the one or more second sets.

8. The method of claim 7, wherein, the second message being used for indicating one or more of: one or more third network nodes, the third network nodes being to update the first set; one or more fourth network nodes, the fourth network nodes being to update the one or more second sets.

9. The method of claim 8, wherein, the second message comprising one or more of: second information of each of the one or more third network nodes; second information of each of the one or more fourth network nodes; the second information being an index or a unified transmission configuration indication, TCI, state of the corresponding network node.

10. The method of claim 1, wherein, the first message being used for notifying the network device to update the first set and / or the one or more second sets.

11. The method of claim 10, wherein, the first message being used for indicating one or more of: one or more third network nodes, the third network nodes being to update the first set; one or more fourth network nodes, the fourth network nodes being to update the one or more second sets.

12. The method of claim 8 or 11, wherein, the method further comprising: the terminal device updating the first set based on the one or more third network nodes, and / or updating the one or more second sets based on the one or more fourth network nodes.

13. The method of claim 12, wherein, the updating of the first set based on the one or more third network nodes comprises: deleting a serving network node comprised by the one or more third network nodes from the first set; and / or, adding a candidate network node comprised by the first or more third network nodes to the first set.

14. The method of claim 12 or 13, wherein, the updating of the one or more second sets based on the one or more fourth network nodes comprises: deleting a candidate network node comprised by the one or more fourth network nodes from a second set in which the candidate network node is comprised, and / or, adding a fifth network node comprised by the first or more fourth network nodes to one of the one or more second sets, the fifth network node not belonging to the first set and the second set.

15. The method of any one of claims 5 to 6, 9 to 11, wherein, the sending of the first message is triggered based on occurrence of a first event or a second event, the first event being a terminal device centric mobility event, and the second event being a network centric mobility event.

16. The method of claim 15, wherein, the first event or the second event for triggering the sending of the first message is predefined or configured.

17. The method of claim 15 or 16, wherein, the first event comprises one or more of: a first link quality difference being greater than a first threshold, the first link quality difference being a link quality difference between a first link quality of the first set and a first link quality after the first set adding a candidate network node; a second link quality difference being greater than a second threshold, the second link quality difference being a link quality difference between a first link quality of the first set and a first link quality after the first set deleting a serving network node.

18. The method of claim 15 or 16, wherein, the second event comprises one or more of: a second link quality of a candidate network node being higher than a third threshold; the second link quality of the candidate network node being higher than a second link quality of a serving network node; a second link quality of the serving network node being lower than a fourth threshold; a second link quality of a fifth network node being higher than a fifth threshold, the fifth network node not belonging to the first set and the second set.

19. The method of claim 4 or 17, wherein, the first link quality comprises one or more of: reference signal received power (RSRP), reference signal received quality (RSRQ), signal to interference plus noise ratio (SINR), signal to noise ratio (SNR), and received signal strength indication (RSSI).

20. The method of claim 4 or 18, wherein, the second link quality comprises one or more of: throughput, data rate, block error rate (BLER), and channel quality indication (CQI).

21. The method of any one of claims 1 to 20, wherein, the method further comprises: the terminal device receiving a third message, the third message being used for configuration of first resources, the first resources being used by the terminal device for measurement of the first set and / or the one or more second sets, the first resources being related to a capability of the terminal device with respect to a UCN (UCN: User Centric Network).

22. The method of claim 21, wherein, the method further comprises: the terminal device sending a fourth message, the fourth message being used for indicating the capability of the terminal device with respect to the UCN.

23. The method of claim 22, wherein, the fourth message comprises one or more of: first indication information, the first indication information being used for indicating a downlink reference signal type supported by the terminal device; second indication information, the second indication information being used for indicating a first quantity and / or a second quantity corresponding to the first set or the second set; third indication information, the third indication information being used for indicating a first quantity and / or a second quantity corresponding to the serving network node or the candidate network node; the first quantity is a maximum quantity of reference signal resources supported on one carrier or bandwidth, and the second quantity is a maximum quantity of reference signal resources supported on all carriers or bandwidths. 24.A method of wireless communication, the method comprising: receiving, by a network device, a first message, the first message being used for updating a first set and / or one or more second sets, the first set comprising one or serving network nodes, and the second set comprising one or more candidate network nodes.

25. The method of claim 24, wherein, the first message being used for reporting measurement results of the first set and / or measurement results of the one or more second sets.

26. The method of claim 25, wherein, the first message comprising one or more of: first information of each of one or more first network nodes, the one or more first network nodes comprising all or part of the serving network nodes in the first set; first information of each of one or more second network nodes, the one or more second network nodes comprising all or part of the candidate network nodes in the one or more second sets; the first information comprising an index and / or a link quality of a corresponding network node.

27. The method of claim 26, wherein, the link quality comprising: a first link quality or a second link quality; the first link quality being related to the network node and the first set; the second link quality being independent of the corresponding network node.

28. The method of claim 24, wherein, the first message being used for requesting the network device to update the first set and / or the one or more second sets.

29. The method of claim 28, wherein, the first message being used for indicating one or more of: one or more first network nodes, the first network nodes being network nodes suggested to update the first set; one or more second network nodes, the second network nodes being network nodes suggested to update the one or more second sets.

30. The method of any one of claims 25 to 29, wherein, the method further comprising: sending, by the network device, a second message, the second message being used for indicating to update the first set and / or the one or more second sets.

31. The method of claim 30, wherein, the second message being used for indicating one or more of: one or more third network nodes, the third network nodes being network nodes to update the first set; one or more fourth network nodes, the fourth network nodes being network nodes to update the one or more second sets.

32. The method of claim 31, wherein, the second message comprising one or more of: second information of each of the one or more third network nodes; second information of each of the one or more fourth network nodes; the second information being an index or a unified transmission configuration indication (TCI) state of a corresponding network node.

33. The method of claim 24, wherein, the first message being used for notifying the network device to update the first set and / or the one or more second sets.

34. The method of claim 33, wherein, the first message being used for indicating one or more of: one or more third network nodes, the third network nodes being network nodes that update the first set; one or more fourth network nodes, the fourth network nodes being network nodes that update the one or more second sets.

35. The method of claim 31 or 34, wherein, The method further comprises: The network device updates the first set based on the one or more third network nodes, and / or updates the one or more second sets based on the one or more fourth network nodes.

36. The method of claim 35, wherein, The updating the first set based on the one or more third network nodes comprises: removing a serving network node comprised by the one or more third network nodes from the first set; and / or, adding a candidate network node comprised by the one or more third network nodes to the first set.

37. The method of claim 35 or 36, wherein, The updating the one or more second sets based on the one or more fourth network nodes comprises: removing a candidate network node comprised by the one or more fourth network nodes from a second set in which the candidate network node is comprised, and / or, adding a fifth network node comprised by the one or more fourth network nodes to one of the one or more second sets, the fifth network node not belonging to the first set and the second set.

38. The method of any one of claims 28-29, 32-34, wherein, The sending of the first message is triggered based on occurrence of a first event or a second event, the first event being a terminal device centric mobility event, and the second event being a network centric mobility event.

39. The method of claim 38, wherein, The first event or the second event for triggering the sending of the first message is predefined or configured.

40. The method of claim 38 or 39, wherein, The first event comprises one or more of: a first link quality difference being greater than a first threshold, the first link quality difference being a link quality difference between a first link quality of the first set and a first link quality after the first set adding a candidate network node; a second link quality difference being greater than a second threshold, the second link quality difference being a link quality difference between a first link quality of the first set and a first link quality after the first set removing a serving network node.

41. The method of claim 38 or 39, wherein, The second event comprises one or more of: a second link quality of a candidate network node being higher than a third threshold; the second link quality of the candidate network node being higher than a second link quality of a serving network node; the second link quality of the serving network node being lower than a fourth threshold; a second link quality of a fifth network node being higher than a fifth threshold, the fifth network node not belonging to the first set and the second set.

42. The method of claim 27 or 40, wherein, The first link quality comprises one or more of: reference signal received power (RSRP), reference signal received quality (RSRQ), signal to interference plus noise ratio (SINR), signal to noise ratio (SNR), and received signal strength indication (RSSI).

43. The method of claim 27 or 41, wherein, The second link quality comprises one or more of: throughput, data rate, block error rate (BLER), and channel quality indication (CQI).

44. The method of any one of claims 24 to 43, wherein, The method further comprises: The network device sends a third message, the third message being used for configuration of a first resource, the first resource being used by the terminal device to perform measurement on the first set and / or the one or more second sets, the first resource being related to a capability of the terminal device with respect to a user-centric network (UCN).

45. The method of claim 44, wherein, The method further comprises: The network device receives a fourth message, the fourth message being used to indicate the capability of the terminal device with respect to a UCN.

46. The method of claim 45, wherein, The fourth message comprises one or more of: first indication information, the first indication information being used to indicate a type of downlink reference signal supported by the terminal device; second indication information, the second indication information being used to indicate a first number and / or a second number corresponding to the first set or the second set; third indication information, the third indication information being used to indicate a first number and / or a second number corresponding to the serving network node or the candidate network node; the first number being a maximum number of reference signal resources supported on one carrier or bandwidth, and the second number being a maximum number of reference signal resources supported on all carriers or bandwidths.

47. A terminal device, comprising: a first communication unit configured to send a first message, the first message being used to update a first set and / or one or more second sets, the first set comprising one or serving network nodes, and the second set comprising one or more candidate network nodes.

48. A network device, comprising: a second communication unit configured to receive a first message, the first message being used to update a first set and / or one or more second sets, the first set comprising one or serving network nodes, and the second set comprising one or more candidate network nodes.

49. A communication device, comprising: a processor, a memory and a transceiver, the memory being used to store a computer program, the processor being used to invoke and run the computer program stored in the memory to cooperate with the transceiver to perform the method of any one of claims 1 to 23, or perform the method of any one of claims 24 to 46.

50. A communication device comprising: a processor, a memory and a transceiver, the memory being used to store a computer program, the processor being used to invoke and run the computer program stored in the memory to cooperate with the transceiver to perform the method of any one of claims 1 to 23, or perform the method of any one of claims 24 to 46.

51. A chip comprising: a processor configured to invoke and run a computer program from a memory, so that a device in which the chip is installed performs the method of any one of claims 1 to 23, or performs the method of any one of claims 24 to 46.

52. A computer readable storage medium, used to store a computer program, the computer program causing a computer to perform the method of any one of claims 1 to 23, or perform the method of any one of claims 24 to 46.

53. A computer program product comprising computer program instructions causing a computer to perform the method of any one of claims 1 to 23, or to perform the method of any one of claims 24 to 46.

54. A computer program causing a computer to perform the method of any one of claims 1 to 23, or to perform the method of any one of claims 24 to 46.

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