Terminal capability change methods, terminal and network side device

Abstract

The present application belongs to the technical field of communications. The embodiments disclose terminal capability change methods, a terminal and a network side device. A terminal capability change method in the embodiments of the present application comprises: a terminal sends a first message, wherein the terminal supports dual-steering or multi-steering, and the first message comprises at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave an RRC connected state, a terminal support information indication, and a preference indication of the terminal before leaving the RRC connected state.

Description

Terminal capability changing method, terminal and network side equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on July 25, 2023, with application number 202310923597.6 and invention name “Terminal Capability Changing Method, Terminal and Network Side Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application belongs to the field of communication technology, and specifically relates to a terminal capability change method, a terminal, and a network-side device. Background Art

[0003] Dual steering allows dual-radio-capable terminals to connect to two 3rd Generation Partnership Project (3GPP) networks simultaneously. This covers scenarios such as two terrestrial Radio Access Network (RAN) nodes connecting to the same Public Land Mobile Network (PLMN); and two different PLMNs connected to a terrestrial RAN node and a satellite RAN node, respectively. Currently, the relevant technologies do not provide solutions for terminal capabilities in dual-access scenarios, which may result in RAN nodes configuring terminals improperly, causing terminals to malfunction under these improper network configurations.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a terminal capability change method, a terminal, and a network-side device, which can solve the problem that the terminal may not work properly under unreasonable network configuration due to the lack of relevant solutions for terminal capabilities in dual access scenarios.

[0006] In a first aspect, a terminal capability change method is provided, comprising: a terminal sending a first message; wherein, the terminal supports dual access or multiple access, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, and a preference indication before the terminal leaves the RRC connection state.

[0007] In a second aspect, a terminal capability change method is provided, including: a network side device receives a first message; wherein, the terminal supports dual access or multiple access, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, a preference indication before the terminal leaves the RRC connection state, and a network indication of related information about dual access or multiple access.

[0008] According to a third aspect, a terminal capability change device is provided, which is applied to a terminal and includes: a sending module for sending a first message; wherein, the terminal supports dual access or multiple access, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, and a preference indication before the terminal leaves the RRC connection state.

[0009] In a fourth aspect, a terminal capability change device is provided, which is applied to a network side device, including: a receiving module for receiving a first message; wherein, the terminal supports dual access or multiple access, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, a preference indication before the terminal leaves the RRC connection state, and a network indication of information related to dual access or multiple access.

[0010] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0011] In the sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is used to send a first message; wherein the terminal supports dual access or multiple access, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, and a preference indication before the terminal leaves the RRC connection state.

[0012] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0013] In the eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the communication interface is used to receive a first message; wherein the terminal supports dual access or multiple access, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, a preference indication before the terminal leaves the RRC connection state, and a network indication of information related to dual access or multiple access.

[0014] In the ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0015] In the tenth aspect, a wireless communication system is provided, comprising: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0016] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0017] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0018] In an embodiment of the present application, a terminal supporting dual access or multi-access sends a first message, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, and a preference indication before the terminal leaves the RRC connection state. This is beneficial to preventing the network from configuring the terminal with a configuration that exceeds the terminal capability, resulting in the terminal being unable to work normally under unreasonable network configuration, and is beneficial to improving the working performance of the terminal when working in two or more networks at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram of a wireless communication system according to an embodiment of the present application;

[0020] FIG2 is a schematic flowchart of a method for changing terminal capabilities according to an embodiment of the present application;

[0021] FIG3 is a schematic flowchart of a method for changing terminal capabilities according to an embodiment of the present application;

[0022] FIG4 is a schematic structural diagram of a terminal capability changing apparatus according to an embodiment of the present application;

[0023] FIG5 is a schematic structural diagram of a terminal capability changing apparatus according to an embodiment of the present application;

[0024] FIG6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

[0025] FIG7 is a schematic structural diagram of a terminal according to an embodiment of the present application;

[0026] FIG8 is a schematic structural diagram of a network-side device according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0028] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0029] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0030] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and the NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6G) system. th Generation, 6G) communication system.

[0031] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, an aircraft (flight vehicle), a vehicle user equipment (VUE), a ship-borne device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), a teller machine, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AS) or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0032] The terminal capability changing method provided in the embodiment of the present application is described in detail below with reference to some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0033] As shown in FIG2 , an embodiment of the present application provides a terminal capability changing method 200 , which can be executed by a terminal. In other words, the method can be executed by software or hardware installed in the terminal. The method includes the following steps.

[0034] S202: The terminal sends a first message; wherein, the terminal supports dual access or multiple access, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the radio resource control (Radio Resource Control, RRC) connection state, a terminal support information indication, and a preference indication before the terminal leaves the RRC connection state.

[0035] It should be noted that the first message mentioned in each embodiment of the present application can be a single signaling message or multiple signaling messages. In the case of multiple signaling messages, they can be sent in any order. For example, when a terminal sends the first message for the first time, it can carry a terminal capability division indication; when the terminal sends the first message for the second time, it can carry a terminal capability change indication.

[0036] In one example, the terminal sends a first message to the network (access network device or core network device), and the first message includes an indication of the terminal capability change. For example, the terminal supports 4Tx uplink multiple-input multiple-output (MIMO) on the first access network device. When the terminal enters the connected state on the second access network device and requires 2Tx capability, the terminal needs to send a first message to indicate to the first access network device that its uplink MIMO capability has changed and that the 2Tx capability needs to be allocated to the second access network device. This example prevents the network from configuring the terminal beyond the terminal capability in dual access or multi-access scenarios, effectively improving the terminal's performance when working on multiple networks simultaneously.

[0037] In one example, a terminal sends a first message to the network (access network device or core network device), the first message including an indication of the terminal capability division. Optionally, after network division is complete, the terminal can be notified, and the terminal can then send a first message including an indication of the terminal capability change. The execution process can be described in the previous example. Alternatively, after network division is complete, the terminal can be directly reconfigured to avoid configurations exceeding the terminal's capabilities, effectively improving the terminal's performance when operating on multiple networks simultaneously.

[0038] In one example, the terminal sends a first message to the network (access network device or core network device), and the first message includes an indication that the terminal needs to leave the RRC connection state. For example, the terminal accesses the first access network device and the second access network device, and the terminal sends a first message to the first access network device. At this time, the first access network device can directly notify the second access network device or forward the notification to the second access network device through the transparent container of the core network device, so that the second access network device can use the full capabilities of the terminal. This example ensures that the network will not configure the terminal in a dual access or multi-access scenario that exceeds the terminal's capabilities, effectively improving the terminal's performance when working in multiple networks at the same time.

[0039] In one example, the terminal sends a first message, and the first message includes an indication that the terminal needs to leave the RRC connection state. After that, the terminal can also send a preference indication before leaving the RRC connection state to the core network through the first message. For example, the terminal sends a preference indication before leaving the RRC connection state to the core network, indicating that when the terminal leaves the RRC connection state on the first access network device, the core network can instruct the second access network device to perform full capability recovery, partial capability recovery (for example, capability recovery ratio) on the terminal according to the corresponding indication information, or not to recover or directly leave the RRC connection state. This example allows the terminal to tell the core network in advance how to recover the capability of the second access when the first access network device leaves the RRC connection state in a dual access or multi-access scenario, thereby preventing the second access network from making unreasonable configurations on the terminal and effectively improving the working performance of the terminal in the second access network.

[0040] In one example, a terminal sends a first message to a network (access network device or core network device). The first message includes information indicating terminal support. For example, the terminal reports to the network support for corresponding capabilities through the first message. Subsequently, the terminal sends a first message that includes a terminal capability change indication or capability division indication. This example allows the network to identify the capabilities supported by the terminal and configure the terminal appropriately.

[0041] Optionally, the first message is carried by one of the following messages: 1) terminal assistance information message (UE Assistance Information message); 2) terminal capability information (UE Capability Information message) message; 3) RRC dedicated signaling message, such as RRC connection establishment completion message; 4) non-access stratum (Non-Access Stratum, NAS) message.

[0042] Optionally, the first message multiplexes a capability limitation message of a multi-user identity card (Multi-Universal Subscriber Identity Module, MUSIM) in the related art, and the first message further includes: purpose indication information, where the purpose indication information is used to indicate that the purpose of the first message is for dual access or multi-access. The first message in this example can reuse an existing signaling message, without the need to design a new signaling message, which can reduce signaling costs.

[0043] The terminal capability change method provided in the embodiment of the present application supports a dual-access or multi-access terminal to send a first message, where the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, and a preference indication before the terminal leaves the RRC connection state. This is beneficial for preventing the network from configuring the terminal with a configuration that exceeds the terminal capability, resulting in the terminal being unable to work normally under an unreasonable network configuration, and is beneficial for improving the working performance of the terminal when working in two or more networks at the same time.

[0044] Optionally, when the first message includes a terminal capability change indication, the first message includes at least one of the following: 1) capability change requirement information; 2) capability identification (ID), wherein different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability that is supported, reduced or restricted by the terminal.

[0045] The capability change requirement information may include or be used to indicate at least one of the following:

[0046] 1) MIMO capabilities, including, for example: the maximum number of uplink or downlink multiple-input multiple-output (MIMO) layers supported; and the reduced or limited number of uplink or downlink MIMO layers.

[0047] 2) Frequency band capability or frequency band combination capability, such as restricted frequency band capability or frequency band combination capability.

[0048] 3) Measurement capability, for example, the maximum number of frequency points to be measured, whether measurement requires a gap, etc.

[0049] 4) Sounding Reference Signal (SRS) switching capability.

[0050] 5) Dual-Connectivity (DC) or Carrier Aggregation (CA) capabilities may include at least one of the following: support for a maximum, reduced, or restricted number of secondary cells (SCells); configuration preference information for SCells, such as activation / deactivation / release / some SCells, and whether secondary cell groups (SCGs) are supported; and configuration preference information for SCGs, such as activation / deactivation / release / some SCGs.

[0051] 6) Bandwidth capabilities, including, for example, reduced or limited uplink or downlink bandwidth capabilities.

[0052] 7) Power capabilities, including, for example, the maximum, reduced, or limited power supported.

[0053] 8) Supported feature set.

[0054] 9) Supported feature set combinations.

[0055] 10) Supported sending and receiving capabilities.

[0056] 11) Maximum supported rate.

[0057] Optionally, when the first message includes a terminal capability division indication, the first message includes at least one of the following: 1) request division capability information, used to request the network to perform capability division for the terminal; 2) expected network division capability information, including at least one of the following: the capability ID that the terminal expects the access network device to assign; the dual access or multi-access capability division ratio that the terminal expects the access network device to assign; the traffic division ratio that the terminal expects the core network device to assign; capability change requirement information; and the configuration upper limit of the terminal.

[0058] Optionally, in the case where the first message includes an indication that the terminal needs to leave the RRC connected state, the first message includes at least one of the following: 1) information requesting to leave the RRC connected state; 2) preference information for leaving the RRC connected state, such as RRC idle state, RRC inactive state, and outOfConnected state; 3) the reason for leaving the RRC connected state is dual access or multiple access.

[0059] Optionally, when the first message includes a terminal support information indication, the first message includes at least one of the following: 1) the terminal supports dual access or multiple access; 2) a public land mobile network PLMN that supports dual access or multiple access; 3) at least one capability supported by the terminal; 4) a capability ID, wherein different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability supported by the terminal.

[0060] Optionally, in the case where the first message includes a preference indication before the terminal leaves the RRC connection state, the first message includes: capability recovery information, used to indicate the network's expectation that the second access network device will recover the capability when the terminal leaves the RRC connection state on the first access network device.

[0061] Optionally, the capability recovery information includes or is used to indicate at least one of the following: 1) recovery of all capabilities; 2) recovery of partial capabilities; 3) no recovery of capabilities; 4) leaving the RRC connection state, used to indicate to the second access network device that the terminal leaves the RRC connection state.

[0062] Optionally, in each of the above embodiments, after the terminal sends the first message, the method further includes: the terminal starting a first timer; wherein, while the first timer is running, the terminal is not allowed to send the first message again; or, if the first timer is not running, the terminal is allowed to send the first message again. The first timer can prevent signaling overhead caused by frequent sending of the first message.

[0063] Optionally, in each of the above embodiments, after the terminal sends the first message, the method further includes: the terminal receiving a second message, where the second message includes at least one of the following:

[0064] 1) Dual-access or multi-access capability split ratio, used to indicate the ratio of capabilities allocated to the access network device to which the terminal is connected. For example, a first message sent by the terminal includes a terminal capability partition indication, and a second message received by the terminal includes the dual-access or multi-access capability split ratio. The terminal may subsequently send a first message carrying a terminal capability change indication.

[0065] 2) Dual-access or multi-access traffic split ratio, used to indicate the traffic ratio allocated to the access network device to which the terminal is connected. For example, the first message sent by the terminal includes the terminal capability division indication, and the second message received by the terminal includes the dual-access or multi-access traffic split ratio. The terminal may subsequently send the first message carrying the terminal capability change indication.

[0066] 3) Capability ID, which indicates the capability ID assigned to the access network device to which the terminal is connected. Different capability IDs correspond to different capability subsets. For example, the first message sent by the terminal includes a terminal capability classification indication, and the second message received by the terminal includes the capability ID. The terminal may subsequently send a first message carrying a terminal capability change indication.

[0067] 4) Capability change indication information, used to indicate the capabilities allocated to the access network device to which the terminal is connected. For example, the first message sent by the terminal includes the terminal capability division indication, and the second message received by the terminal includes the capability change indication information. The terminal may subsequently send the first message carrying the terminal capability change indication.

[0068] 5) First configuration information, where the first configuration information is used to reconfigure the terminal. For example, the first message sent by the terminal includes a terminal capability change indication or a terminal capability division indication, and the second message received by the terminal includes the first configuration information.

[0069] Optionally, in each of the above embodiments, the first message includes an indication that the terminal needs to leave the RRC connection state. After the terminal sends the first message, the method further includes: the terminal receives first configuration information, and the first configuration information is used to reconfigure the terminal, and the capability reconfigured for the terminal is the total capability of the terminal.

[0070] In this embodiment, after the terminal sends the first message, the method further includes: the terminal starting a second timer; when the second timer times out, the terminal enters the RRC idle state. The second timer can define the terminal's behavior when the terminal does not receive a response from the network side.

[0071] Optionally, in each of the above embodiments, after the terminal sends the first message, the method further includes: the terminal receiving a first response message, where the first response message includes at least one of the following:

[0072] 1) Information indicating acceptance or rejection of the first message.

[0073] 2) Information used to reconfigure the terminal.

[0074] Optionally, in each of the above embodiments, before the terminal sends the first message, the method further includes: the terminal receiving second configuration information, where the second configuration information is used to indicate that the terminal is allowed to send the first message, and the second configuration information includes or is used to indicate at least one of the following:

[0075] 1) First indication information, used to indicate supporting capability change of the terminal or sending a capability division request.

[0076] 2) A duration of a first timer, where the first timer is used to limit the terminal from sending the first message.

[0077] 3) The duration of a second timer, where the second timer is used for the terminal to enter the RRC idle state.

[0078] 4) For the purpose of dual access or multiple access, the terminal is supported to request to leave the RRC connected state.

[0079] Optionally, the second configuration information is carried by one of the following: 1) a system information (SI) message; 2) an RRC reconfiguration message.

[0080] The above describes in detail the terminal capability modification method according to an embodiment of the present application in conjunction with FIG2 . The following describes in detail the terminal capability modification method according to another embodiment of the present application in conjunction with FIG3 . It is understood that the interaction between the network-side device and the terminal described from the perspective of the network-side device is the same as or corresponds to the description of the terminal side in the method shown in FIG2 . To avoid repetition, the relevant description is appropriately omitted.

[0081] FIG3 is a schematic diagram of a method for changing terminal capabilities according to an embodiment of the present invention, which can be applied to network-side devices. As shown in FIG3 , the method 300 includes the following steps.

[0082] S302: The network side device receives a first message; wherein, the terminal supports dual access or multiple access, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, a preference indication before the terminal leaves the RRC connection state, and a network indication of information related to dual access or multiple access.

[0083] The network side device may be an access network device for dual-access or multi-access terminals; the network side device may also be a core network device.

[0084] When the network side device is an access network device, the first message may come from the terminal or from the core network device; when the network side device is a core network device, the first message comes from the terminal.

[0085] In an embodiment of the present application, a network-side device receives a first message related to a terminal, where the terminal supports dual access or multiple access. The first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, a preference indication before the terminal leaves the RRC connection state, and a network indication of information related to dual access or multiple access. This is beneficial to preventing the network from configuring the terminal with a configuration that exceeds the terminal capability, resulting in the terminal being unable to work normally under an unreasonable network configuration, and is beneficial to improving the working performance of the terminal when working in two or more networks at the same time.

[0086] Optionally, as an embodiment, when the first message includes a terminal capability change indication, the first message includes at least one of the following: capability change requirement information; capability identification ID, wherein different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability that is supported, reduced or restricted by the terminal.

[0087] Optionally, as an embodiment, when the first message includes a terminal capability division indication, the first message includes at least one of the following: request division capability information, used to request the network to perform capability division for the terminal; expected network division capability information, including at least one of the following: capability ID that the terminal expects the access network device to assign; dual access or multi-access capability division ratio that the terminal expects the access network device to assign; traffic division ratio that the terminal expects the core network device to assign; capability change requirement information; and configuration upper limit of the terminal.

[0088] Optionally, as an embodiment, when the first message includes an indication that the terminal needs to leave the RRC connection state, the first message includes at least one of the following: information requesting to leave the RRC connection state; preference information for leaving the RRC connection state; the reason for leaving the RRC connection state is dual access or multiple access.

[0089] Optionally, as an embodiment, when the first message includes a terminal support information indication, the first message includes at least one of the following: the terminal supports dual access or multiple access; a PLMN that supports dual access or multiple access; at least one capability supported by the terminal; a capability ID, wherein different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability supported by the terminal.

[0090] Optionally, as an embodiment, when the first message includes a preference indication before the terminal leaves the RRC connection state, the first message includes: capability recovery information, used to indicate the network's expectation that the second access network device will recover the capability when the terminal leaves the RRC connection state on the first access network device.

[0091] The capability recovery information includes or is used to indicate at least one of the following: recovery of all capabilities; recovery of partial capabilities; no recovery of capabilities; leaving the RRC connection state, which is used to indicate to the second access network device that the terminal leaves the RRC connection state.

[0092] Optionally, as an embodiment, the capability change requirement information includes or is used to indicate at least one of the following:

[0093] 1) MIMO capabilities, including, for example: the maximum number of uplink or downlink multiple-input multiple-output (MIMO) layers supported; and the reduced or limited number of uplink or downlink MIMO layers.

[0094] 2) Frequency band capability or frequency band combination capability, such as restricted frequency band capability or frequency band combination capability.

[0095] 3) Measurement capability, for example, the maximum number of frequency points to be measured, whether measurement requires a gap, etc.

[0096] 4) Sounding Reference Signal (SRS) switching capability.

[0097] 5) Dual-Connectivity (DC) or Carrier Aggregation (CA) capability may include at least one of the following: support for a maximum, reduced, or restricted number of secondary cells (SCells); configuration preference information for SCells, whether secondary cell groups (SCGs) are supported; and configuration preference information for SCGs.

[0098] 6) Bandwidth capabilities, including, for example, reduced or limited uplink or downlink bandwidth capabilities.

[0099] 7) Power capabilities, including, for example, the maximum, reduced, or limited power supported.

[0100] 8) Supported feature set.

[0101] 9) Supported feature set combinations.

[0102] 10) Supported sending and receiving capabilities.

[0103] 11) Maximum supported rate.

[0104] Optionally, as an embodiment, the first message is carried by one of the following messages: 1) terminal assistance information message; 2) terminal capability information message; 3) RRC dedicated signaling message; 4) non-access stratum NAS message.

[0105] Optionally, as an embodiment, after the network-side device receives the first message, the method further includes: the network-side device sending a second message to the terminal, where the second message includes at least one of the following:

[0106] 1) Dual access or multi-access capability split ratio, which is used to indicate the ratio of the capabilities allocated to the access network devices accessed by the terminal.

[0107] 2) Dual-access or multi-access traffic split ratio, used to indicate the traffic ratio allocated to the access network device accessed by the terminal.

[0108] 3) Capability ID, which is used to indicate the capability ID allocated to the access network device to which the terminal is connected. Different capability IDs correspond to different capability subsets.

[0109] 4) Capability change indication information, used to indicate the capabilities allocated to the access network device to which the terminal is connected.

[0110] 5) First configuration information, where the first configuration information is used to reconfigure the terminal.

[0111] Optionally, as an embodiment, the network-side device is a first access network device, and the method further includes: the first access network device sending a third message to the second access network device, where the third message includes at least one of the following:

[0112] 1) Dual access or multi-access capability split ratio, used to indicate the ratio of the capabilities allocated to the access network devices accessed by the terminal.

[0113] 2) Dual-access or multi-access traffic split ratio, which is used to indicate the traffic ratio allocated to the access network device accessed by the terminal.

[0114] 3) Capability ID, used to indicate the capability ID allocated to the access network device accessed by the terminal. Different capability IDs correspond to different capability subsets.

[0115] 4) Capability change indication information, used to indicate the capabilities allocated to the access network device accessed by the terminal.

[0116] 5) First configuration information, where the first configuration information is used to reconfigure the terminal.

[0117] The first access network device and the second access network device are access network devices accessed by the terminal.

[0118] Optionally, as an embodiment, the first message includes an indication that the terminal needs to leave the RRC connection state. After the network side device receives the first message, the method further includes: the network side device sends first configuration information to the terminal, and the first configuration information is used to reconfigure the terminal, and the capability reconfigured for the terminal is the total capability of the terminal.

[0119] Optionally, as an embodiment, the network side device is a first access network device, and the method further includes: the first access network device sends the first configuration information through a second access network device.

[0120] Optionally, as an embodiment, the first message comes from the terminal, and after the network side device receives the first message, the method further includes: the network side device sends a first response message to the terminal, and the first response message includes at least one of the following: 1) information indicating acceptance or rejection of the first message; 2) information used to reconfigure the terminal.

[0121] Optionally, as an embodiment, after the network-side device receives the first message, the method further includes: the network-side device sending second configuration information to the terminal, where the second configuration information is used to indicate that the terminal is allowed to send the first message, and the second configuration information includes or is used to indicate at least one of the following:

[0122] 1) First indication information, used to indicate supporting capability change of the terminal or sending a capability division request.

[0123] 2) A duration of a first timer, where the first timer is used to limit the terminal from sending the first message.

[0124] 3) The duration of a second timer, where the second timer is used for the terminal to enter the RRC idle state.

[0125] 4) For the purpose of dual access or multiple access, the terminal is supported to request to leave the RRC connected state.

[0126] Optionally, as an embodiment, the second configuration information is carried by one of the following: 1) SI message; 2) RRC reconfiguration message.

[0127] Optionally, as an embodiment, the network side device receives a first message related to the core network device, and the first message includes: network indications of dual access or multi-access related information, including at least one of the following: the terminal establishes a connection with the first access network device; the terminal establishes a connection with the second access network device; dual access or multi-access is enabled; auxiliary information related to dual access or multi-access; resource negotiation information between the first access network device and the second access network device; wherein, the first access network device and the second access network device are access network devices accessed by the terminal.

[0128] Optionally, as an embodiment, the network's dual access or multi-access related information indication comes from a core network device, and after the network side device receives the first message, the method also includes: the network side device sends first configuration information to the terminal, and the first configuration information is used to reconfigure the capabilities of the terminal.

[0129] Optionally, as an embodiment, the method further includes: the network side device sending the first configuration information to the second access network device, and the first configuration information is also used by the second access network device to reconfigure the capabilities of the terminal.

[0130] Optionally, as an embodiment, the network side device is a first access network device, and the method further includes: when the network side device releases the terminal to an RRC idle state or an RRC inactive state, the network side device sends a second indication message to a second access network device, wherein the second indication message is used to instruct the second access network device to use the terminal capabilities, or to indicate to the second access network device that the terminal is currently in a single radio access technology (Radio Access Technology, RAT) scenario, or to indicate that the terminal is in an RRC inactive state; the first access network device and the second access network device are access network devices to which the terminal accesses.

[0131] To illustrate in detail the terminal capability change method provided in the embodiments of the present application, several specific embodiments will be described below.

[0132] In one embodiment, a terminal reports a terminal capability change indication to an access network device (or RAN node, RAN device, etc.). This embodiment includes the following steps:

[0133] Step 1: The terminal sends a first message to the access network device, where the first message includes a terminal capability change indication, requesting a capability change and hoping that the network configuration does not exceed the corresponding capability requirement. The first message includes at least one of the following: 1) terminal support information, used to indicate the services supported by the terminal; 2) capability change requirement information; 3) capability identification (ID), where different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability that is supported, reduced, or restricted by the terminal.

[0134] The terminal support information may include or be used to indicate at least one of the following:

[0135] 1) The terminal supports dual access or multi-access.

[0136] 2) Public Land Mobile Network (PLMN) supporting dual access or multi-access.

[0137] 3) At least one capability supported by the terminal, such as the maximum capability supported by the terminal.

[0138] 4) Capability ID, where different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability supported by the terminal.

[0139] The capability change requirement information may include or be used to indicate at least one of the following:

[0140] 1) MIMO capabilities, including, for example: the maximum number of uplink or downlink multiple-input multiple-output (MIMO) layers supported; and the reduced or limited number of uplink or downlink MIMO layers.

[0141] 2) Frequency band capability or frequency band combination capability, such as restricted frequency band capability or frequency band combination capability.

[0142] 3) Measurement capability, for example, the maximum number of frequency points to be measured, whether measurement requires a gap, etc.

[0143] 4) Sounding Reference Signal (SRS) switching capability.

[0144] 5) Dual-Connectivity (DC) or Carrier Aggregation (CA) capabilities may include at least one of the following: support for a maximum, reduced, or restricted number of secondary cells (SCells); configuration preference information for SCells, such as activation / deactivation / release / some SCells, and whether secondary cell groups (SCGs) are supported; and configuration preference information for SCGs, such as activation / deactivation / release / some SCGs.

[0145] 6) Bandwidth capabilities, including, for example, reduced or limited uplink or downlink bandwidth capabilities.

[0146] 7) Power capabilities, including, for example, the maximum, reduced, or limited power supported.

[0147] 8) Supported feature set.

[0148] 9) Supported feature set combinations.

[0149] 10) Supported sending and receiving capabilities.

[0150] 11) Maximum supported rate.

[0151] For example, in this embodiment, the terminal supports 4Tx uplink MIMO on the first access network device. When the terminal enters the connected state on the second access network device and needs 2Tx capability, the terminal needs to indicate to the first access network device that its uplink MIMO capability has changed and that the 2Tx capability needs to be allocated to the second access network device.

[0152] For another example, when two access network devices have some bandwidth conflicts, the terminal needs to report the currently restricted band or bandwidth combinations to the network. The network then performs reasonable band configuration based on the band information provided by the terminal.

[0153] Optionally, the first message is carried by one of the following messages: 1) terminal assistance information message; 2) terminal capability information message; 3) RRC dedicated signaling message, such as RRC connection establishment completion message; 4) Non-Access Stratum (NAS) message.

[0154] Optionally, after the terminal sends the first message, the method further includes: the terminal starts a first timer; wherein, while the first timer is running, the terminal is not allowed to send the first message again; or when the first timer is not running, the terminal allows the first message to be sent again.

[0155] Step 2: The terminal receives a first response message, where the first response message includes at least one of the following:

[0156] 1) Information indicating acceptance or rejection of the first message.

[0157] 2) Information for reconfiguring the terminal: the access network device reconfigures the terminal according to the capability change indication of the terminal to prevent the configurations on both sides from exceeding the total capability of the terminal.

[0158] Step 3: The terminal completes the corresponding capability change reconfiguration according to the first response message.

[0159] In one embodiment, the terminal multiplexes MUSIM-related messages to report capability limitations to the access network device. This embodiment includes the following steps:

[0160] Step 1: The UE sends a first message to the access network device. The first message includes a terminal capability change indication, requesting the access network device to change its capabilities and hoping that the network configuration does not exceed the corresponding capability requirements. The first message includes at least one of the following: 1) terminal support information, used to indicate the services supported by the terminal; 2) capability change requirement information; 3) capability identification (ID), wherein different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability that is supported, reduced or restricted by the terminal.

[0161] For the specific content of the first message, please refer to the previous embodiment.

[0162] In this embodiment, the first message may reuse the capability limitation signaling in the MUSIM scenario, and the first message may further include the following content: Dual access or multi-access purpose: the terminal indicates to the network that the first message is for dual access or multi-access.

[0163] Step 2: The terminal receives a first response message, where the first response message includes at least one of the following:

[0164] 1) Information indicating acceptance or rejection of the first message.

[0165] 2) Information for reconfiguring the terminal: the access network device reconfigures the terminal according to the capability change indication of the terminal to prevent the configurations on both sides from exceeding the total capability of the terminal.

[0166] Step 3: The terminal completes the corresponding capability change reconfiguration according to the first response message.

[0167] In one embodiment, the core network / base station (the base station may be a first access network device, and the same applies to the following) sends a capability splitting policy to the terminal. This embodiment includes the following steps:

[0168] Step 1: The terminal sends a first message to the core network function / base station, where the first message includes at least one of a terminal capability change indication and a terminal support information indication.

[0169] The terminal support information may include or be used to indicate at least one of the following:

[0170] 1) The terminal supports dual access or multi-access.

[0171] 2) Public Land Mobile Network (PLMN) supporting dual access or multi-access.

[0172] 3) At least one capability supported by the terminal, such as the maximum capability supported by the terminal.

[0173] 4) Capability ID, where different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability supported by the terminal.

[0174] Step 2: Optionally, the terminal may further send a first message to the core network function / base station to request the network to perform capability division (i.e., the first message includes a terminal capability division indication), wherein the first message in this step includes at least one of the following contents;

[0175] 1) Request for capability division information, used to request the network to perform capability division for the terminal; 2) Expected network division capability information, including at least one of the following: the capability ID that the terminal expects the access network device to assign; the dual access or multi-access capability division ratio that the terminal expects the access network device to assign; the traffic division ratio that the terminal expects the core network device to assign; capability change requirement information; and the configuration upper limit of the terminal.

[0176] Optionally, step 2 may be omitted, and the network directly divides the terminal capabilities.

[0177] Step 3a: Optionally, the base station / core network function sends capability split information to a second base station (directly or through the core network function); (the second base station is a base station used by another connection of the UE, or a second RAN, a second access network device, etc.)

[0178] Step 3: The terminal receives a response message from the base station / core network, which includes at least one of the following:

[0179] 1) The network accepts or rejects the first message.

[0180] 2) Dual access capability split ratio, which is used to indicate the ratio of the capabilities allocated to the access network device to which the terminal accesses. For example, the core network divides the capabilities of the two access network devices accessed by the terminal based on a certain strategy. The capability split ratio can be the split ratio of the total capability or the split ratio of different capabilities.

[0181] 3) Capability ID, which indicates the capability ID assigned to the access network device to which the terminal is connected. Different capability IDs correspond to different capability subsets. Different capability IDs are assigned to the access network devices on both sides. Different capability IDs correspond to different capability subsets.

[0182] Optionally, the core network function / base station may also send the response message to the two access network devices respectively. The two access network devices obtain the corresponding capability split information and directly configure it to the UE (step 3a), and then proceed to step 5.

[0183] Step 4: The terminal applies the capability percentage indicated under dual access according to the capability splitting information in the response message, performs capability splitting, and again reports the capability limit to the access network device through the first message, wherein the first message includes at least one of the following contents: 1) terminal support information, used to indicate the services supported by the terminal; 2) capability change requirement information; 3) capability identification (ID), wherein different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability that is supported, reduced or restricted by the terminal.

[0184] The terminal sends the first message to inform the two access network devices that the capability change is required, hoping that the network configuration does not exceed the corresponding capability requirements.

[0185] The network can configure a first timer for the first message. After the terminal sends the first message, the method also includes: the terminal starts the first timer; wherein, while the first timer is running, the terminal is not allowed to send the first message again; or when the first timer is not running, the terminal allows the first message to be sent again.

[0186] 1) Information indicating acceptance or rejection of the first message.

[0187] 2) Information for reconfiguring the terminal: the access network device reconfigures the terminal according to the capability change indication of the terminal to prevent the configurations on both sides from exceeding the total capability of the terminal.

[0188] Step 6: The terminal completes the corresponding capability change reconfiguration according to the response message.

[0189] In one embodiment, the terminal reports preference information of the capability splitting strategy, and the embodiment includes the following steps:

[0190] Step 1: The terminal sends a first message, wherein the first message includes at least one of a terminal capability change indication and a terminal support information indication.

[0191] The terminal support information may include or be used to indicate at least one of the following:

[0192] 1) The terminal supports dual access or multi-access.

[0193] 2) Public Land Mobile Network (PLMN) supporting dual access or multi-access.

[0194] 3) At least one capability supported by the terminal, such as the maximum capability supported by the terminal.

[0195] 4) Capability ID, where different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability supported by the terminal.

[0196] Step 2: Optionally, the UE may also send a first message to the core network function / base station to report the capability splitting preference and request the network to perform capability splitting, where the first message includes at least one of the following:

[0197] 1) Requesting for allocation of capability information, which is used to request allocation of corresponding capabilities to the access network device accessed by the terminal based on the capabilities of the terminal.

[0198] 2) Capability information of expected network partitioning, including at least one of the following: capability ID expected to be allocated by the access network device; dual access capability split ratio expected to be allocated by the access network device; capability change requirement information; and configuration upper limit of the terminal.

[0199] The network can configure a first timer for the first message. After the terminal sends the first message, the first timer is started. During the running of the first timer, the terminal no longer sends the same information. When the first timer expires, the terminal directly applies the capability change configuration in the first message or resends the first message.

[0200] Step 3a: Optionally, the base station / core network function sends capability split information to the second base station (directly or through the core network function) based on the split preference; (the second base station is a base station used by another connection of the UE).

[0201] Step 3: The terminal receives a response message from the core network function / base station, where the response message includes at least one of the following:

[0202] 1) The network accepts or rejects the first message.

[0203] 2) Dual access capability split ratio, which is used to indicate the ratio of the capabilities allocated to the access network device to which the terminal accesses. For example, the core network divides the capabilities of the two access network devices accessed by the terminal based on a certain strategy. The capability split ratio can be the split ratio of the total capability or the split ratio of different capabilities.

[0204] 3) Capability ID, which indicates the capability ID assigned to the access network device to which the terminal is connected. Different capability IDs correspond to different capability subsets. Different capability IDs are assigned to the access network devices on both sides. Different capability IDs correspond to different capability subsets.

[0205] 4) Corresponding capability change indications, such as how many MIMOs and CCs are configured on the two access network devices respectively.

[0206] Optionally, the core network function / base station may also directly send the response message to the two access network devices respectively. The two access network devices obtain the corresponding capability split information and directly configure it to the UE (step 3a), and then proceed to step 5.

[0207] Step 4: The UE applies the capability percentage indicated under dual access according to the capability splitting information in the response message, performs capability splitting, and again reports the capability restriction to the access network device through the first message, where the first message includes at least one of the following contents: 1) terminal support information, used to indicate the services supported by the terminal; 2) capability change requirement information; 3) capability identification (ID), where different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability that is supported, reduced or restricted by the terminal.

[0208] The network can configure a first timer for the first message. After the terminal sends the first message, the method also includes: the terminal starts the first timer; wherein, while the first timer is running, the terminal is not allowed to send the first message again; or when the first timer is not running, the terminal allows the first message to be sent again.

[0209] Step 5: The UE receives the response message and completes the corresponding capability reconfiguration, where the response message includes at least one of the following:

[0210] 1) Information indicating acceptance or rejection of the first message.

[0211] 2) Information for reconfiguring the terminal: the access network device reconfigures the terminal according to the capability change indication of the terminal to prevent the configurations on both sides from exceeding the total capability of the terminal.

[0212] Step 6: The terminal completes the corresponding capability change reconfiguration according to the response message.

[0213] The difference between the above two embodiments is that in the former embodiment, the core network issues capability segmentation information based on the network-side policy, while in the latter embodiment, the terminal requests the network-side capability segmentation based on its own capability segmentation preference. The decision-making entities of the policy are different.

[0214] In one embodiment, the base station configures the UE accordingly based on information sent by the core network. This embodiment includes the following steps:

[0215] Step 1: A first access network device receives a first message from a core network. The first message includes an instruction to reconfigure capabilities of a terminal, including at least one of the following:

[0216] 1) Second RAN establishment or second leg establishment.

[0217] 2) First RAN establishment or first leg establishment.

[0218] 3) Dual access or multi-access enabled.

[0219] 4) Auxiliary information related to dual access or multi-access, such as UE-related information (such as GUTI, dual steering service allowed) and second access network device-related information (such as gNB ID, support for dual steering, and supported modes).

[0220] 5) Resource negotiation information between the second access network device and the first access network device, such as information related to the terminal capabilities currently occupied by the second access network device, frequency information of the second access network device, frequency information allocated to Pcell and / or Scell ​​in the second access network device, etc. Optionally, the interaction information between MN and SN in the DC scenario can be included in the resource negotiation information between the second access network device and the first access network device.

[0221] Step 2: The first access network device reconfigures resources for the UE based on the indication information of the core network, including information on changes in UE capabilities, resource negotiation information, etc., or the first access network device executes resource reconfiguration of the terminal as instructed by the second access network device based on the indication information of the core network.

[0222] Step 2a: Optionally, the first access network device may notify the second access network device of the corresponding reconfiguration information directly or through the core network, and the second access network device reconfigures the UE, where the reconfiguration information includes the corresponding capability splitting information or capability change information of the UE.

[0223] In one embodiment, the terminal releases the RRC connection of a certain access network device based on an RRC request. The embodiment includes the following steps:

[0224] Step 1: The UE reports support for related capabilities to two access network devices through a first message, where the first message is the same message sent to two different access network devices respectively, where the first message includes terminal support information, which is used to indicate services supported by the terminal. The terminal support information may include or be used to indicate at least one of the following:

[0225] 1) The terminal supports dual access or multi-access.

[0226] 2) Public Land Mobile Network (PLMN) supporting dual access or multi-access.

[0227] 3) At least one capability supported by the terminal, such as the maximum capability supported by the terminal.

[0228] 4) Capability ID, where different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability supported by the terminal.

[0229] 5) For the purpose of dual access or multiple access, the terminal is supported to indicate that it is allowed to leave the RRC connected state.

[0230] Optionally, the network may configure whether the terminal can provide auxiliary information related to whether leaving the RRC connected state is allowed in a dual access or multi-access scenario.

[0231] Step 2: The terminal again instructs the first access network device through the first message that it needs to leave the RRC connection state for the purpose of dual access or multi-access.

[0232] Optionally, after sending the first message, the terminal starts a second timer; when the second timer expires, the terminal directly enters the RRC idle state.

[0233] Step 3: The UE enters the RRC IDLE / INACTIVE state by receiving the RRC release message sent by the first access network device.

[0234] Step 4: The UE receives the RRC reconfiguration message from the second access network device, and reconfigures the UE capabilities supported by the second access network device, where the reconfiguration includes all capabilities of the UE.

[0235] In one embodiment, the first access network device releases the RRC connection, and the core network function / base station instructs the second access network device to use all capabilities of the UE. This embodiment includes the following steps:

[0236] Step 1: The first access network device releases the RRC connection to the idle or inactive state.

[0237] Step 2: The core network function / base station performs one of the following actions:

[0238] 1) When the first access network device releases a UE supporting dual steering to the RRC IDLE state, the core network function / base station indicates to the second access network device that it is currently in a single RAT scenario. The second access network device then uses the full capabilities of the UE by default. Optionally, the second access network device can obtain the full capabilities of the UE by using the UE capability information reported by the UE or by having the core network push the full capabilities of the UE to the second access network device. (The base station can directly instruct the second access network device or forward the information to the second access network device through the core network function.)

[0239] 2) When the first access network device releases the UE supporting dual steering to the RRC INACTIVE state, the core network function / base station indicates to the second access network device that the terminal is currently in a single RAT scenario, or indicates that the terminal is in the RRC INACTIVE state. The second access network device then uses the full capabilities of the UE by default. The first access network device notifies the core network function through an RRC INACTIVE TRANSITION REPORT carrying relevant information, or the core network function forwards it to the second access network device. Optionally, the second access network device can obtain the full capabilities of the UE through the UE capability information reported by the UE or through the core network pushing the full capabilities of the UE to the second access network device.

[0240] The terminal capability changing method provided in the embodiment of the present application can be executed by a terminal capability changing device. In the embodiment of the present application, the terminal capability changing device performing the terminal capability changing method is used as an example to illustrate the terminal capability changing device provided in the embodiment of the present application.

[0241] FIG4 is a schematic diagram of the structure of a terminal capability modification device according to an embodiment of the present application, which can be applied to a terminal. As shown in FIG4 , the device 400 includes the following modules.

[0242] The sending module 402 is used to send a first message; wherein, the terminal supports dual access or multiple access, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, and a preference indication before the terminal leaves the RRC connection state.

[0243] In an embodiment of the present application, a terminal supporting dual access or multi-access sends a first message, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, and a preference indication before the terminal leaves the RRC connection state. This is beneficial to preventing the network from configuring the terminal with a configuration that exceeds the terminal capability, resulting in the terminal being unable to work normally under unreasonable network configuration, and is beneficial to improving the working performance of the terminal when working in two or more networks at the same time.

[0244] Optionally, when the first message includes a terminal capability change indication, the first message includes at least one of the following: 1) capability change requirement information; 2) capability identification (ID), wherein different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability that is supported, reduced or restricted by the terminal.

[0245] The capability change requirement information may include or be used to indicate at least one of the following:

[0246] 1) MIMO capabilities, including, for example: the maximum number of uplink or downlink multiple-input multiple-output (MIMO) layers supported; and the reduced or limited number of uplink or downlink MIMO layers.

[0247] 2) Frequency band capability or frequency band combination capability, such as restricted frequency band capability or frequency band combination capability.

[0248] 3) Measurement capability, for example, the maximum number of frequency points to be measured, whether measurement requires a gap, etc.

[0249] 4) Sounding Reference Signal (SRS) switching capability.

[0250] 5) Dual-Connectivity (DC) or Carrier Aggregation (CA) capability may include at least one of the following: support for a maximum, reduced, or restricted number of secondary cells (SCells); configuration preference information for SCells, whether secondary cell groups (SCGs) are supported; and configuration preference information for SCGs.

[0251] 6) Bandwidth capabilities, including, for example, reduced or limited uplink or downlink bandwidth capabilities.

[0252] 7) Power capabilities, including, for example, the maximum, reduced, or limited power supported.

[0253] 8) Supported feature set.

[0254] 9) Supported feature set combinations.

[0255] 10) Supported sending and receiving capabilities.

[0256] 11) Maximum supported rate.

[0257] Optionally, when the first message includes a terminal capability division indication, the first message includes at least one of the following: 1) request division capability information, used to request the network to perform capability division for the terminal; 2) expected network division capability information, including at least one of the following: the capability ID that the terminal expects the access network device to assign; the dual access or multi-access capability division ratio that the terminal expects the access network device to assign; the traffic division ratio that the terminal expects the core network device to assign; capability change requirement information; and the configuration upper limit of the terminal.

[0258] Optionally, in the case where the first message includes an indication that the terminal needs to leave the RRC connected state, the first message includes at least one of the following: 1) information requesting to leave the RRC connected state; 2) preference information for leaving the RRC connected state, such as RRC idle state, RRC inactive state, and outOfConnected state; 3) the reason for leaving the RRC connected state is dual access or multiple access.

[0259] Optionally, when the first message includes a terminal support information indication, the first message includes at least one of the following: 1) the terminal supports dual access or multiple access; 2) a public land mobile network PLMN that supports dual access or multiple access; 3) at least one capability supported by the terminal; 4) a capability ID, wherein different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability supported by the terminal.

[0260] Optionally, in the case where the first message includes a preference indication before the terminal leaves the RRC connection state, the first message includes: capability recovery information, used to indicate the network's expectation that the second access network device will recover the capability when the terminal leaves the RRC connection state on the first access network device.

[0261] Optionally, the capability recovery information includes or is used to indicate at least one of the following: 1) recovery of all capabilities; 2) recovery of partial capabilities; 3) no recovery of capabilities; 4) leaving the RRC connection state, used to indicate to the second access network device that the terminal leaves the RRC connection state.

[0262] Optionally, in each of the above embodiments, the device further includes a processing module for starting a first timer; wherein, while the first timer is running, the terminal is not allowed to send the first message again; or when the first timer is not running, the terminal allows the first message to be sent again.

[0263] Optionally, in each of the above embodiments, the apparatus further includes a receiving module, configured to receive a second message, where the second message includes at least one of the following:

[0264] 1) Dual access or multi-access capability split ratio, which is used to indicate the ratio of the capabilities allocated to the access network devices accessed by the terminal.

[0265] 2) Dual-access or multi-access traffic split ratio, used to indicate the traffic ratio allocated to the access network device accessed by the terminal.

[0266] 3) Capability ID, which is used to indicate the capability ID allocated to the access network device to which the terminal is connected. Different capability IDs correspond to different capability subsets.

[0267] 4) Capability change indication information, used to indicate the capabilities allocated to the access network device to which the terminal is connected.

[0268] 5) First configuration information, where the first configuration information is used to reconfigure the terminal.

[0269] Optionally, in each of the above embodiments, the first message includes an indication that the terminal needs to leave the RRC connection state, and the device also includes a receiving module for receiving first configuration information, the first configuration information is used to reconfigure the terminal, and the capability reconfigured for the terminal is the total capability of the terminal.

[0270] In this embodiment, the apparatus further includes a processing module, configured to start a second timer; when the second timer times out, the terminal enters an RRC idle state.

[0271] Optionally, in each of the above embodiments, the apparatus further includes a receiving module, configured to receive a first response message, where the first response message includes at least one of the following:

[0272] 1) Information indicating acceptance or rejection of the first message.

[0273] 2) Information used to reconfigure the terminal.

[0274] Optionally, in each of the above embodiments, the apparatus further includes a receiving module, configured to receive second configuration information, where the second configuration information is used to indicate that the terminal is allowed to send the first message, and the second configuration information includes or is used to indicate at least one of the following:

[0275] 1) First indication information, used to indicate supporting capability change of the terminal or sending a capability division request.

[0276] 2) A duration of a first timer, where the first timer is used to limit the terminal from sending the first message.

[0277] 3) The duration of a second timer, where the second timer is used for the terminal to enter the RRC idle state.

[0278] 4) For the purpose of dual access or multiple access, the terminal is supported to request to leave the RRC connected state.

[0279] Optionally, the second configuration information is carried by one of the following: 1) a system information (SI) message; 2) an RRC reconfiguration message.

[0280] According to the device 400 of the embodiment of the present application, the process of the method 200 corresponding to the embodiment of the present application can be referred to, and the various units / modules in the device 400 and the above-mentioned other operations and / or functions are respectively for implementing the corresponding processes in the method 200, and can achieve the same or equivalent technical effects. For the sake of brevity, they will not be repeated here.

[0281] The terminal capability changing device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal or other device other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0282] FIG5 is a schematic diagram of the structure of a terminal capability modification device according to an embodiment of the present application, which can be applied to network-side equipment. As shown in FIG5 , the device 500 includes the following modules.

[0283] The receiving module 502 is used to receive a first message; wherein, the terminal supports dual access or multiple access, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, a preference indication before the terminal leaves the RRC connection state, and a network indication of information related to dual access or multiple access.

[0284] In an embodiment of the present application, a network-side device receives a first message related to a terminal, where the terminal supports dual access or multiple access. The first message includes at least one of the following: a terminal support information indication, a preference indication before the terminal leaves the RRC connection state, and a network indication of information related to dual access or multiple access. This is beneficial to preventing the network from configuring the terminal with a configuration that exceeds the terminal's capabilities, resulting in the terminal being unable to work normally under an unreasonable network configuration, and is beneficial to improving the terminal's working performance when working in two or more networks at the same time.

[0285] Optionally, as an embodiment, when the first message includes a terminal capability change indication, the first message includes at least one of the following: capability change requirement information; capability identification ID, wherein different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability that is supported, reduced or restricted by the terminal.

[0286] Optionally, as an embodiment, when the first message includes a terminal capability division indication, the first message includes at least one of the following: request division capability information, used to request the network to perform capability division for the terminal; expected network division capability information, including at least one of the following: capability ID that the terminal expects the access network device to assign; dual access or multi-access capability division ratio that the terminal expects the access network device to assign; traffic division ratio that the terminal expects the core network device to assign; capability change requirement information; and configuration upper limit of the terminal.

[0287] Optionally, as an embodiment, when the first message includes an indication that the terminal needs to leave the RRC connection state, the first message includes at least one of the following: information requesting to leave the RRC connection state; preference information for leaving the RRC connection state; the reason for leaving the RRC connection state is dual access or multiple access.

[0288] Optionally, as an embodiment, when the first message includes a terminal support information indication, the first message includes at least one of the following: the terminal supports dual access or multiple access; a PLMN that supports dual access or multiple access; at least one capability supported by the terminal; a capability ID, wherein different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability supported by the terminal.

[0289] Optionally, as an embodiment, when the first message includes a preference indication before the terminal leaves the RRC connection state, the first message includes: capability recovery information, used to indicate the network's expectation that the second access network device will recover the capability when the terminal leaves the RRC connection state on the first access network device.

[0290] The capability recovery information includes or is used to indicate at least one of the following: recovery of all capabilities; recovery of partial capabilities; no recovery of capabilities; leaving the RRC connection state, which is used to indicate to the second access network device that the terminal leaves the RRC connection state.

[0291] Optionally, as an embodiment, the capability change requirement information includes or is used to indicate at least one of the following:

[0292] 1) MIMO capabilities, including, for example: the maximum number of uplink or downlink multiple-input multiple-output (MIMO) layers supported; and the reduced or limited number of uplink or downlink MIMO layers.

[0293] 2) Frequency band capability or frequency band combination capability, such as restricted frequency band capability or frequency band combination capability.

[0294] 3) Measurement capability, for example, the maximum number of frequency points to be measured, whether measurement requires a gap, etc.

[0295] 4) Sounding Reference Signal (SRS) switching capability.

[0296] 5) Dual-Connectivity (DC) or Carrier Aggregation (CA) capability may include at least one of the following: support for a maximum, reduced, or restricted number of secondary cells (SCells); configuration preference information for SCells, whether secondary cell groups (SCGs) are supported; and configuration preference information for SCGs.

[0297] 6) Bandwidth capabilities, including, for example, reduced or limited uplink or downlink bandwidth capabilities.

[0298] 7) Power capabilities, including, for example, the maximum, reduced, or limited power supported.

[0299] 8) Supported feature set.

[0300] 9) Supported feature set combinations.

[0301] 10) Supported sending and receiving capabilities.

[0302] 11) Maximum supported rate.

[0303] Optionally, as an embodiment, the first message is carried by one of the following messages: 1) terminal assistance information message; 2) terminal capability information message; 3) RRC dedicated signaling message; 4) non-access stratum NAS message.

[0304] Optionally, as an embodiment, the network-side device further includes a sending module, configured to send a second message to the terminal, where the second message includes at least one of the following:

[0305] 1) Dual access or multi-access capability split ratio, which is used to indicate the ratio of the capabilities allocated to the access network devices accessed by the terminal.

[0306] 2) Dual-access or multi-access traffic split ratio, used to indicate the traffic ratio allocated to the access network device accessed by the terminal.

[0307] 3) Capability ID, which is used to indicate the capability ID allocated to the access network device to which the terminal is connected. Different capability IDs correspond to different capability subsets.

[0308] 4) Capability change indication information, used to indicate the capabilities allocated to the access network device to which the terminal is connected.

[0309] 5) First configuration information, where the first configuration information is used to reconfigure the terminal.

[0310] Optionally, as an embodiment, the network side device is a first access network device, and the network side device further includes a sending module, configured to send a third message to the second access network device, where the third message includes at least one of the following:

[0311] 1) Dual access or multi-access capability split ratio, used to indicate the ratio of the capabilities allocated to the access network devices accessed by the terminal.

[0312] 2) Dual-access or multi-access traffic split ratio, which is used to indicate the traffic ratio allocated to the access network device accessed by the terminal.

[0313] 3) Capability ID, used to indicate the capability ID allocated to the access network device accessed by the terminal. Different capability IDs correspond to different capability subsets.

[0314] 4) Capability change indication information, used to indicate the capabilities allocated to the access network device accessed by the terminal.

[0315] 5) First configuration information, where the first configuration information is used to reconfigure the terminal.

[0316] The first access network device and the second access network device are access network devices accessed by the terminal.

[0317] Optionally, as an embodiment, the first message includes an indication that the terminal needs to leave the RRC connection state, and the network side device also includes a sending module for sending first configuration information to the terminal, and the first configuration information is used to reconfigure the terminal, and the capability reconfigured for the terminal is the total capability of the terminal.

[0318] Optionally, as an embodiment, the network side device is a first access network device, and the network side device further includes a sending module for sending the first configuration information through a second access network device.

[0319] Optionally, as an embodiment, the first message comes from the terminal, and the network side device also includes a sending module for sending a first response message to the terminal, and the first response message includes at least one of the following: 1) information indicating acceptance or rejection of the first message; 2) information for reconfiguring the terminal.

[0320] Optionally, as an embodiment, the network-side device further includes a sending module, configured to send second configuration information to the terminal, where the second configuration information is used to indicate that the terminal is allowed to send the first message, and the second configuration information includes or is used to indicate at least one of the following:

[0321] 1) First indication information, used to indicate supporting capability change of the terminal or sending a capability division request.

[0322] 2) A duration of a first timer, where the first timer is used to limit the terminal from sending the first message.

[0323] 3) The duration of a second timer, where the second timer is used for the terminal to enter the RRC idle state.

[0324] 4) For the purpose of dual access or multiple access, the terminal is supported to request to leave the RRC connected state.

[0325] Optionally, as an embodiment, the second configuration information is carried by one of the following: 1) SI message; 2) RRC reconfiguration message.

[0326] Optionally, as an embodiment, the network's indication of dual access or multi-access related information includes at least one of the following: the terminal establishing a connection with the first access network device; the terminal establishing a connection with the second access network device; dual access or multi-access being enabled; auxiliary information related to dual access or multi-access; resource negotiation information between the first access network device and the second access network device; wherein, the first access network device and the second access network device are access network devices accessed by the terminal.

[0327] Optionally, as an embodiment, the network's dual access or multi-access related information indication comes from a core network device, and the network side device also includes a sending module for sending first configuration information to the terminal, and the first configuration information is used to reconfigure the capabilities of the terminal.

[0328] Optionally, as an embodiment, the network side device further includes a sending module for sending the first configuration information to the second access network device, and the first configuration information is also used by the second access network device to reconfigure the capabilities of the terminal.

[0329] Optionally, as an embodiment, the network side device is a first access network device, and the network side device also includes a sending module for sending a second indication information to a second access network device when releasing the terminal to an RRC idle state or an RRC inactive state, wherein the second indication information is used to instruct the second access network device to use the terminal capabilities, or to indicate that the terminal in the second access network is currently in a single RAT scenario, or to indicate that the terminal is in an RRC inactive state; the first access network device and the second access network device are access network devices to which the terminal accesses.

[0330] According to the device 500 of the embodiment of the present application, the process of the method 300 corresponding to the embodiment of the present application can be referred to, and the various units / modules in the device 500 and the above-mentioned other operations and / or functions are respectively for implementing the corresponding processes in the method 300, and can achieve the same or equivalent technical effects. For the sake of brevity, they will not be repeated here.

[0331] The terminal capability changing device provided in the embodiment of the present application can implement the various processes implemented in the method embodiments of Figures 2 to 3 and achieve the same technical effects. To avoid repetition, they will not be described here.

[0332] Optionally, as shown in Figure 6, an embodiment of the present application further provides a communication device 600, including a processor 601 and a memory 602, wherein the memory 602 stores a program or instruction that can be run on the processor 601. For example, when the communication device 600 is a terminal, the program or instruction is executed by the processor 601 to implement the various steps of the above-mentioned terminal capability change method embodiment and can achieve the same technical effect. When the communication device 600 is a network-side device, the program or instruction is executed by the processor 601 to implement the various steps of the above-mentioned terminal capability change method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0333] An embodiment of the present application also provides a terminal, including a processor and a communication interface, the communication interface being configured to send a first message; wherein the terminal supports dual access or multiple access, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, and a preference indication before the terminal leaves the RRC connection state. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Figure 7 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.

[0334] The terminal 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709 and at least some of the components of the processor 710.

[0335] Those skilled in the art will appreciate that the terminal 700 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 710 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG7 does not limit the terminal. The terminal may include more or fewer components than shown, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0336] It should be understood that in an embodiment of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042, and the graphics processor 7041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 707 includes a touch panel 7071 and at least one of other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and an operating stick, which will not be repeated here.

[0337] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 701 may transmit the data to the processor 710 for processing. Furthermore, the RF unit 701 may send uplink data to the network-side device. Typically, the RF unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0338] The memory 709 can be used to store software programs or instructions and various data. The memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 709 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 709 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0339] Processor 710 may include one or more processing units. Optionally, processor 710 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 710.

[0340] Among them, the radio frequency unit 701 can be used to send a first message; wherein, the terminal supports dual access or multiple access, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, and a preference indication before the terminal leaves the RRC connection state.

[0341] In an embodiment of the present application, a terminal supporting dual access or multi-access sends a first message, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connection state, a terminal support information indication, and a preference indication before the terminal leaves the RRC connection state. This is beneficial to preventing the network from configuring the terminal with a configuration that exceeds the terminal capability, resulting in the terminal being unable to work normally under unreasonable network configuration, and is beneficial to improving the working performance of the terminal when working in two or more networks at the same time.

[0342] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the terminal capability change in the method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0343] An embodiment of the present application also provides a network-side device, including a processor and a communication interface, the communication interface being configured to receive a first message; wherein the terminal supports dual access or multiple access, and the first message includes at least one of the following: a terminal capability change indication, a terminal capability division indication, an indication that the terminal needs to leave the RRC connected state, a terminal support information indication, a preference indication before the terminal leaves the RRC connected state, and an indication of network-related information regarding dual access or multiple access. This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment are applicable to this network-side device embodiment and can achieve the same technical effect.

[0344] The present application also provides a network-side device. As shown in Figure 8, the network-side device 800 includes an antenna 81, a radio frequency device 82, a baseband device 83, a processor 84, and a memory 85. Antenna 81 is connected to radio frequency device 82. In the uplink direction, radio frequency device 82 receives information via antenna 81 and sends the received information to baseband device 83 for processing. In the downlink direction, baseband device 83 processes the information to be transmitted and sends it to radio frequency device 82. Radio frequency device 82 processes the received information and then sends it through antenna 81.

[0345] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 83 , which includes a baseband processor.

[0346] The baseband device 83 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 8, one of the chips is, for example, a baseband processor, which is connected to the memory 85 through a bus interface to call the program in the memory 85 to execute the network device operations shown in the above method embodiment.

[0347] The network side device may further include a network interface 86, which is, for example, a Common Public Radio Interface (CPRI).

[0348] The network side device 800 of the embodiment of the present application also includes: instructions or programs stored in the memory 85 and can be run on the processor 84. The processor 84 calls the instructions or programs in the memory 85 to execute the methods executed by each module shown in Figure 5 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0349] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned terminal capability change method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0350] The processor is the processor in the terminal described in the above embodiment. The readable storage medium can be non-volatile or non-transitory. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium can be non-transitory.

[0351] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned terminal capability change method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0352] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0353] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned terminal capability change method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0354] An embodiment of the present application also provides a terminal capability change system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the terminal capability change method described above, and the network side device can be used to execute the steps of the terminal capability change method described above.

[0355] The processors mentioned in the embodiments of the present application may include general-purpose processors, special-purpose processors, etc., such as a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), an artificial intelligence (AI) processor, a graphics processing unit (GPU), an application-specific integrated circuit (ASIC), a network processor (NP), a field programmable gate array (FPGA), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc.

[0356] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0357] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0358] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A method for changing terminal capabilities, wherein: include: The terminal sends a first message; wherein the terminal supports dual access or multiple access, and the first message includes at least one of the following: Terminal capability change indication, terminal capability division indication, indication that the terminal needs to leave the radio resource control RRC connected state, terminal support information indication, and preference indication before the terminal leaves the RRC connected state.

2. The method according to claim 1, wherein: In the case where the first message includes a terminal capability change indication, the first message includes at least one of the following: capability change requirement information; capability identification ID, wherein different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability supported, reduced or restricted by the terminal; or, In the case where the first message includes a terminal capability division indication, the first message includes at least one of the following: request division capability information, used to request the network to perform capability division for the terminal; capability information of expected network division, including at least one of the following: capability ID that the terminal expects the access network device to allocate; dual access or multi-access capability division ratio that the terminal expects the access network device to allocate; traffic division ratio that the terminal expects the core network device to allocate; capability change requirement information; configuration upper limit of the terminal; or, In the case where the first message includes an indication that the terminal needs to leave the RRC connected state, the first message includes at least one of the following: information requesting to leave the RRC connected state; preference information for leaving the RRC connected state; the reason for leaving the RRC connected state is dual access or multiple access; or, In the case where the first message includes a terminal support information indication, the first message includes at least one of the following: the terminal supports dual access or multiple access; a public land mobile network PLMN supporting dual access or multiple access; at least one capability supported by the terminal; a capability ID, wherein different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability supported by the terminal; or, In the case where the first message includes a preference indication before the terminal leaves the RRC connection state, the first message includes: capability recovery information, used to indicate the network's expectation that the second access network device will recover capabilities when the terminal leaves the RRC connection state on the first access network device.

3. The method according to claim 2, wherein: The capability recovery information includes or is used to indicate at least one of the following: Restore full capabilities; Recover some of your abilities; The ability is not restored; Leaving the RRC connection state is used to indicate to the second access network device that the terminal has left the RRC connection state.

4. The method according to claim 2, wherein: The capability change requirement information includes or is used to indicate at least one of the following: Multiple-input multiple-output MIMO capability; Frequency band capability or frequency band combination capability; Measurement capabilities; Sounding reference signal SRS switching capability; Dual connectivity DC or carrier aggregation CA capability; Bandwidth capabilities; Power capability; The set of supported features; Supported feature set combinations; Supported sending and receiving capabilities; Maximum supported rate.

5. The method according to any one of claims 1 to 4, wherein: After the terminal sends the first message, the method further includes: the terminal starting a first timer; Wherein, while the first timer is running, the terminal is not allowed to send the first message again; or when the first timer is not running, the terminal is allowed to send the first message again.

6. The method according to any one of claims 1 to 5, wherein: The first message is carried by one of the following messages: Terminal auxiliary information message; Terminal capability information message; RRC dedicated signaling message; Non-access stratum NAS message.

7. The method according to any one of claims 1 to 6, wherein: After the terminal sends the first message, the method further includes: the terminal receiving a second message, where the second message includes at least one of the following: Dual access or multi-access capability split ratio, used to indicate the proportion of the capability allocated to the access network device accessed by the terminal; Dual-access or multi-access traffic split ratio, used to indicate the traffic ratio allocated to the access network device accessed by the terminal; Capability ID, used to indicate the capability ID assigned to the access network device to which the terminal is connected, and different capability IDs correspond to different capability subsets; Capability change indication information, used to indicate the capabilities allocated by the terminal to the access network device to be accessed; First configuration information, where the first configuration information is used to reconfigure the terminal.

8. The method according to claim 1 or 2, wherein: The first message includes an indication that the terminal needs to leave the RRC connected state. After the terminal sends the first message, the method further includes: The terminal receives first configuration information, where the first configuration information is used to reconfigure the terminal, and the capability reconfigured for the terminal is the total capability of the terminal.

9. The method according to claim 8, wherein: After the terminal sends the first message, the method further includes: The terminal starts a second timer; When the second timer times out, the terminal enters the RRC idle state.

10. The method according to any one of claims 1 to 9, wherein: After the terminal sends the first message, the method further includes: the terminal receiving a first response message, where the first response message includes at least one of the following: information indicating acceptance or rejection of the first message; Information used to reconfigure the terminal.

11. The method according to any one of claims 1 to 10, wherein: Before the terminal sends the first message, the method further includes: the terminal receiving second configuration information, where the second configuration information is used to indicate that the terminal is allowed to send the first message, and the second configuration information includes or is used to indicate at least one of the following: The first indication information is used to indicate a change in the capability of supporting the terminal or to send a capability division request; a duration of a first timer, where the first timer is used to limit the terminal from sending a first message; a duration of a second timer, the second timer being used for the terminal to enter an RRC idle state; For the purpose of dual access or multiple access, the terminal is supported to request to leave the RRC connected state.

12. The method according to claim 11, wherein: The second configuration information is carried by one of the following: System information SI message; RRC reconfiguration message.

13. A method for changing terminal capabilities, wherein: include: The network side device receives a first message; wherein the terminal supports dual access or multiple access, and the first message includes at least one of the following: Terminal capability change indication, terminal capability division indication, indication that the terminal needs to leave the RRC connected state, terminal support information indication, terminal preference indication before leaving the RRC connected state, network information indication about dual access or multiple access.

14. The method according to claim 13, wherein: In the case where the first message includes a terminal capability change indication, the first message includes at least one of the following: capability change requirement information; capability identification ID, wherein different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability supported, reduced or restricted by the terminal; or, In the case where the first message includes a terminal capability division indication, the first message includes at least one of the following: request division capability information, used to request the network to perform capability division for the terminal; capability information of expected network division, including at least one of the following: capability ID that the terminal expects the access network device to allocate; dual access or multi-access capability division ratio that the terminal expects the access network device to allocate; traffic division ratio that the terminal expects the core network device to allocate; capability change requirement information; configuration upper limit of the terminal; or, In the case where the first message includes an indication that the terminal needs to leave the RRC connected state, the first message includes at least one of the following: information requesting to leave the RRC connected state; preference information for leaving the RRC connected state; the reason for leaving the RRC connected state is dual access or multiple access; or, In the case where the first message includes a terminal support information indication, the first message includes at least one of the following: the terminal supports dual access or multiple access; a PLMN supporting dual access or multiple access; at least one capability supported by the terminal; a capability ID, wherein different capability IDs correspond to different capability subsets, and the capability subset includes at least one capability supported by the terminal; or, In the case where the first message includes a preference indication before the terminal leaves the RRC connection state, the first message includes: capability recovery information, used to indicate the network's expectation that the second access network device will recover capabilities when the terminal leaves the RRC connection state on the first access network device.

15. The method according to claim 14, wherein: The capability recovery information includes or is used to indicate at least one of the following: Restore full capabilities; Recover some of your abilities; The ability is not restored; Leaving the RRC connection state is used to indicate to the second access network device that the terminal has left the RRC connection state.

16. The method according to claim 14, wherein: The capability change requirement information includes or is used to indicate at least one of the following: Multiple-input multiple-output MIMO capability; Frequency band capability or frequency band combination capability; Measurement capabilities; Sounding reference signal SRS switching capability; Dual connectivity DC or carrier aggregation CA capability; Bandwidth capabilities; Power capability; The set of supported features; Supported feature set combinations; Supported sending and receiving capabilities; Maximum supported rate.

17. The method according to any one of claims 13 to 16, wherein: The first message is carried by one of the following messages: Terminal auxiliary information message; Terminal capability information message; RRC dedicated signaling message; Non-access stratum NAS message.

18. The method according to any one of claims 13 to 17, wherein: After the network side device receives the first message, the method further includes: the network side device sends a second message to the terminal, and the second message includes at least one of the following: Dual access or multi-access capability split ratio, used to indicate the proportion of the capability allocated to the access network device accessed by the terminal; Dual-access or multi-access traffic split ratio, used to indicate the traffic ratio allocated to the access network device accessed by the terminal; Capability ID, used to indicate the capability ID assigned by the terminal to the access network device to access. Different capability IDs are Different subsets of capabilities should be considered; Capability change indication information, used to indicate the capabilities allocated by the terminal to the access network device to be accessed; First configuration information, where the first configuration information is used to reconfigure the terminal.

19. The method according to any one of claims 13 to 17, wherein: The network side device is a first access network device, and the method further includes: the first access network device sends a third message to the second access network device, and the third message includes at least one of the following: Dual access or multi-access capability split ratio, used to indicate the proportion of the capabilities allocated to the access network device accessed by the terminal; Dual-access or multi-access traffic split ratio, used to indicate the traffic ratio allocated to the access network device accessed by the terminal; Capability ID, used to indicate the capability ID assigned to the access network device accessed by the terminal, and different capability IDs correspond to different capability subsets; Capability change indication information, used to indicate the capability allocated to the access network device accessed by the terminal; first configuration information, where the first configuration information is used to reconfigure the terminal; The first access network device and the second access network device are access network devices accessed by the terminal.

20. The method according to claim 13 or 14, wherein: The first message includes an indication that the terminal needs to leave the RRC connected state. After the network side device receives the first message, the method further includes: The network side device sends first configuration information to the terminal, where the first configuration information is used to reconfigure the terminal, and the capability reconfigured for the terminal is the total capability of the terminal.

21. The method according to claim 20, wherein: The network side device is a first access network device, and the method further includes: The first access network device sends the first configuration information through the second access network device.

22. The method according to any one of claims 13 to 21, wherein: The first message comes from the terminal. After the network side device receives the first message, the method further includes: The network side device sends a first response message to the terminal, where the first response message includes at least one of the following: information indicating acceptance or rejection of the first message; Information used to reconfigure the terminal.

23. The method according to any one of claims 13 to 22, wherein: After the network side device receives the first message, the method further includes: The network side device sends second configuration information to the terminal, where the second configuration information is used to indicate that the terminal is allowed to send the first message, and the second configuration information includes or is used to indicate at least one of the following: The first indication information is used to indicate a change in the capability of supporting the terminal or to send a capability division request; a duration of a first timer, where the first timer is used to limit the terminal from sending a first message; a duration of a second timer, the second timer being used for the terminal to enter an RRC idle state; For the purpose of dual access or multiple access, the terminal is supported to request to leave the RRC connected state.

24. The method according to claim 23, wherein: The second configuration information is carried by one of the following: System information SI message; RRC reconfiguration message.

25. The method of claim 13, wherein: The network indication of dual access or multi-access related information includes at least one of the following: The terminal establishes a connection with the first access network device; The terminal establishes a connection with the second access network device; Dual access or multi-access enabled; Auxiliary information related to dual access or multi-access; Resource negotiation information between the first access network device and the second access network device; The first access network device and the second access network device are access network devices accessed by the terminal.

26. The method according to claim 25, wherein: The network indication of the dual access or multi-access related information comes from a core network device, and after the network side device receives the first message, the method further includes: The network side device sends first configuration information to the terminal, where the first configuration information is used to reconfigure the capability of the terminal.

27. The method according to claim 26, wherein: The method further comprises: The network side device sends the first configuration information to the second access network device, and the first configuration information is also used by the second access network device to reconfigure the capability of the terminal.

28. The method according to any one of claims 13 to 27, wherein: The network side device is a first access network device, and the method further includes: When releasing the terminal to the RRC idle state or the RRC inactive state, the network side device sends second indication information to the second access network device, where the second indication information is used to instruct the second access network device to use the terminal capability, or to indicate that the terminal in the second access network is currently in a single radio access technology RAT scenario, or to indicate that the terminal is in the RRC inactive state; The first access network device and the second access network device are access network devices accessed by the terminal.

29. A terminal capability changing device, applied to a terminal, wherein: include: A sending module, configured to send a first message; wherein the terminal supports dual access or multiple access, and the first message includes at least one of the following: Terminal capability change indication, terminal capability division indication, indication that the terminal needs to leave the RRC connected state, terminal support information indication, and preference indication before the terminal leaves the RRC connected state.

30. A terminal capability changing device, applied to a network side device, wherein: include: A receiving module, configured to receive a first message; wherein the terminal supports dual access or multiple access, and the first message includes at least one of the following: Terminal capability change indication, terminal capability division indication, indication that the terminal needs to leave the RRC connected state, terminal support information indication, terminal preference indication before leaving the RRC connected state, network information indication about dual access or multiple access.

31. A terminal, wherein: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method according to any one of claims 1 to 12 are implemented.

32. A network side device, wherein: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method according to any one of claims 13 to 28 are implemented.

33. A readable storage medium, wherein: The readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the method according to any one of claims 1 to 28 are implemented.

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