Method and device for acquiring capability information of user equipment (UE)

Abstract

The embodiment of the invention provides a method and a device for acquiring capability information of user equipment (UE), and relates to the technical field of communication. The method comprises: receiving a registration request sent by a UE, the registration request carrying a node identifier of a second network node, and the second network node storing UE capability information of the UE; sending a UE capability information acquisition request to the second network node based on the node identifier of the second network node; and receiving UE capability information of the UE sent by the second network node. Thus, when the UE moves to other network nodes, the other network nodes can acquire the UE capability information from the network node storing the UE capability information, the UE does not need to report the UE capability information of the UE again, the signaling overhead of the UE is reduced, and the power consumption of the UE is reduced.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for acquiring capability information of a user equipment (UE). Background Art

[0002] In a distributed network, a user equipment (UE) carries its own capability information when registering and stores its capabilities in an access and mobility management function (AMF). When the UE moves to a different distributed network node, it needs to re-report its capability information.

[0003] However, adopting the above method will increase the signaling overhead of the UE, resulting in greater power consumption of the UE. Summary of the invention

[0004] The embodiment of the present application provides a method for acquiring capability information of a user equipment UE, which can effectively reduce the power consumption of the UE.

[0005] In a first aspect, an embodiment of the present application provides a method for acquiring capability information of a user equipment UE, which is applied to a first network node, and the method includes:

[0006] receiving a registration request sent by a UE, where the registration request carries a node identifier of a second network node, and the second network node stores UE capability information of the UE;

[0007] Sending a UE capability information acquisition request to the second network node based on the node identifier of the second network node;

[0008] Receive UE capability information of the UE sent by the second network node.

[0009] According to a method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, the method further includes:

[0010] receiving a capability update request sent by the UE, wherein the capability update request carries an identifier of the UE and updated UE capability information;

[0011] The updated UE capability information is sent to the second network node, and the second network node is instructed to update the UE capability information corresponding to the identifier of the UE.

[0012] According to a method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, the method further includes:

[0013] A capability deletion message is sent to the second network node, where the capability deletion message is used to instruct the second network node to delete UE capability information of the UE.

[0014] According to a method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, the sending a capability deletion message to the second network node includes:

[0015] receiving a deregistration status notification sent by the UE, where the deregistration status notification is used to instruct the UE to exit the distributed network;

[0016] Send a capability deletion message to the second network node.

[0017] According to a method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, the method further includes:

[0018] Based on the node identifier of the second network node, subscription information of UE capability information is sent to the second network node.

[0019] In a second aspect, an embodiment of the present application provides a method for acquiring capability information of a user equipment UE, which is applied to a second network node, and the method includes:

[0020] Receiving a UE capability information acquisition request sent by a first network node;

[0021] sending UE capability information of the UE to the first network node;

[0022] The second network node stores UE capability information of the UE.

[0023] According to a method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, the method further includes:

[0024] receiving a registration request sent by the UE, where the registration request includes UE capability information of the UE;

[0025] The UE capability information of the UE is stored.

[0026] According to a method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, the method further includes:

[0027] receiving updated UE capability information of the UE sent by the first network node;

[0028] Based on the updated UE capability information, the UE capability information of the UE is updated.

[0029] According to a method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, the method further includes:

[0030] receiving a capability update request sent by the UE, wherein the capability update request carries an identifier of the UE and updated UE capability information;

[0031] The UE capability information of the UE is updated based on the identifier of the UE.

[0032] According to a method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, the method further includes:

[0033] receiving a capability deletion message sent by the first network node;

[0034] Based on the capability deletion message, UE capability information of the UE is deleted.

[0035] According to a method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, the method further includes:

[0036] receiving a deregistration status notification sent by the UE, where the deregistration status notification is used to instruct the UE to exit the distributed network;

[0037] Based on the deregistration status notification, UE capability information of the UE is deleted.

[0038] According to a method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, the method further includes:

[0039] Receive subscription information for the capability information sent by the first network node.

[0040] In a third aspect, an embodiment of the present application provides a method for acquiring capability information of a user equipment UE, which is applied to a UE, and the method includes:

[0041] Sending a registration request to the first network node, where the registration request carries a node identifier of the second network node, and the second network node stores UE capability information of the UE;

[0042] The registration request is used by the first network node to obtain UE capability information of the UE from the second network node.

[0043] According to a method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, the method further includes:

[0044] A registration request is sent to the second network node, where the registration request includes UE capability information of the UE.

[0045] According to a method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, the method further includes:

[0046] A capability update request is sent to the first network node, where the capability update request carries the identifier of the UE and updated UE capability information, and the capability update request is used to update the UE capability information of the UE.

[0047] According to a method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, the method further includes:

[0048] A capability update request is sent to the second network node, where the capability update request carries the identifier of the UE and updated UE capability information, and the capability update request is used to update the UE capability information of the UE.

[0049] According to a method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, the method further includes:

[0050] A deregistration status notification is sent to the first network node or the second network node, where the deregistration status notification is used to instruct the UE to exit the distributed network, and the deregistration status notification is used to delete the UE capability information of the UE in the second network node.

[0051] In a fourth aspect, an embodiment of the present application further provides a first network node, including a memory, a transceiver, and a processor:

[0052] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0053] receiving a registration request sent by a UE, where the registration request carries a node identifier of a second network node, and the second network node stores UE capability information of the UE;

[0054] Sending a UE capability information acquisition request to the second network node based on the node identifier of the second network node;

[0055] Receive UE capability information of the UE sent by the second network node.

[0056] According to a first network node provided by an embodiment of the present application, the processor is further configured to perform the following operations:

[0057] receiving a capability update request sent by the UE, wherein the capability update request carries an identifier of the UE and updated UE capability information;

[0058] The updated UE capability information is sent to the second network node, and the second network node is instructed to update the UE capability information corresponding to the identifier of the UE.

[0059] According to a first network node provided by an embodiment of the present application, the processor is further configured to perform the following operations:

[0060] A capability deletion message is sent to the second network node, where the capability deletion message is used to instruct the second network node to delete UE capability information of the UE.

[0061] According to a first network node provided in an embodiment of the present application, the sending of a capability deletion message to the second network node includes:

[0062] receiving a deregistration status notification sent by the UE, where the deregistration status notification is used to instruct the UE to exit the distributed network;

[0063] Send a capability deletion message to the second network node.

[0064] According to a first network node provided by an embodiment of the present application, the processor is further configured to perform the following operations:

[0065] Based on the node identifier of the second network node, subscription information of UE capability information is sent to the second network node.

[0066] In a fifth aspect, an embodiment of the present application further provides a second network node, including a memory, a transceiver, and a processor:

[0067] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0068] Receiving a UE capability information acquisition request sent by a first network node;

[0069] sending UE capability information of the UE to the first network node;

[0070] The second network node stores UE capability information of the UE.

[0071] According to a second network node provided by an embodiment of the present application, the processor is further configured to perform the following operations:

[0072] receiving a registration request sent by the UE, where the registration request includes UE capability information of the UE;

[0073] The UE capability information of the UE is stored.

[0074] According to a second network node provided by an embodiment of the present application, the processor is further configured to perform the following operations:

[0075] receiving updated UE capability information of the UE sent by the first network node;

[0076] Based on the updated UE capability information, the UE capability information of the UE is updated.

[0077] According to a second network node provided by an embodiment of the present application, the processor is further configured to perform the following operations:

[0078] receiving a capability update request sent by the UE, wherein the capability update request carries an identifier of the UE and updated UE capability information;

[0079] The UE capability information of the UE is updated based on the identifier of the UE.

[0080] According to a second network node provided by an embodiment of the present application, the processor is further configured to perform the following operations:

[0081] receiving a capability deletion message sent by the first network node;

[0082] Based on the capability deletion message, UE capability information of the UE is deleted.

[0083] According to a second network node provided by an embodiment of the present application, the processor is further configured to perform the following operations:

[0084] receiving a deregistration status notification sent by the UE, where the deregistration status notification is used to instruct the UE to exit the distributed network;

[0085] Based on the deregistration status notification, UE capability information of the UE is deleted.

[0086] According to a second network node provided by an embodiment of the present application, the processor is further configured to perform the following operations:

[0087] Receive subscription information for the capability information sent by the first network node.

[0088] In a sixth aspect, an embodiment of the present application further provides a user equipment UE, including a memory, a transceiver, and a processor:

[0089] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0090] Sending a registration request to the first network node, where the registration request carries a node identifier of the second network node, and the second network node stores UE capability information of the UE;

[0091] The registration request is used by the first network node to obtain UE capability information of the UE from the second network node.

[0092] According to a user equipment UE provided in an embodiment of the present application, the processor is further configured to perform the following operations:

[0093] A registration request is sent to the second network node, where the registration request includes UE capability information of the UE.

[0094] According to a user equipment UE provided in an embodiment of the present application, the processor is further configured to perform the following operations:

[0095] A capability update request is sent to the first network node, where the capability update request carries the identifier of the UE and updated UE capability information, and the capability update request is used to update the UE capability information of the UE.

[0096] According to a user equipment UE provided in an embodiment of the present application, the processor is further configured to perform the following operations:

[0097] A capability update request is sent to the second network node, where the capability update request carries the identifier of the UE and updated UE capability information, and the capability update request is used to update the UE capability information of the UE.

[0098] According to a user equipment UE provided in an embodiment of the present application, the processor is further configured to perform the following operations:

[0099] A deregistration status notification is sent to the first network node or the second network node, where the deregistration status notification is used to instruct the UE to exit the distributed network, and the deregistration status notification is used to delete the UE capability information of the UE in the second network node.

[0100] In a seventh aspect, an embodiment of the present application further provides a device for acquiring capability information of a user equipment UE, which is applied to a first network node, and the device includes:

[0101] A first receiving unit, configured to receive a registration request sent by a UE, where the registration request carries a node identifier of a second network node, and the second network node stores UE capability information of the UE;

[0102] A first sending unit, configured to send a UE capability information acquisition request to the second network node based on the node identifier of the second network node;

[0103] The second receiving unit is configured to receive the UE capability information of the UE sent by the second network node.

[0104] According to an embodiment of the present application, a device for acquiring capability information of a user equipment UE is provided, the device further comprising:

[0105] A third receiving unit is configured to receive a capability update request sent by the UE, where the capability update request carries an identifier of the UE and updated UE capability information;

[0106] The second sending unit is configured to send the updated UE capability information to the second network node, and instruct the second network node to update the UE capability information corresponding to the identifier of the UE.

[0107] According to an embodiment of the present application, a device for acquiring capability information of a user equipment UE is provided, the device further comprising:

[0108] The third sending unit is configured to send a capability deletion message to the second network node, where the capability deletion message is used to instruct the second network node to delete the UE capability information of the UE.

[0109] According to a device for acquiring capability information of a user equipment UE provided in an embodiment of the present application, the third sending unit is specifically configured to:

[0110] receiving a deregistration status notification sent by the UE, where the deregistration status notification is used to instruct the UE to exit the distributed network;

[0111] Send a capability deletion message to the second network node.

[0112] According to an embodiment of the present application, a device for acquiring capability information of a user equipment UE is provided, the device further comprising:

[0113] The fourth sending unit is used to send subscription information of UE capability information to the second network node based on the node identifier of the second network node.

[0114] In an eighth aspect, an embodiment of the present application further provides a device for acquiring capability information of a user equipment UE, which is applied to a second network node, and the device includes:

[0115] A first receiving unit, configured to receive a UE capability information acquisition request sent by a first network node;

[0116] A first sending unit, configured to send UE capability information of the UE to the first network node;

[0117] The second network node stores UE capability information of the UE.

[0118] According to an embodiment of the present application, a device for acquiring capability information of a user equipment UE is provided, the device further comprising:

[0119] A second receiving unit, configured to receive a registration request sent by the UE, where the registration request includes UE capability information of the UE;

[0120] A storage unit is used to store the UE capability information of the UE.

[0121] According to an embodiment of the present application, a device for acquiring capability information of a user equipment UE is provided, the device further comprising:

[0122] A third receiving unit, configured to receive updated UE capability information of the UE sent by the first network node;

[0123] The first updating unit is configured to update the UE capability information of the UE based on the updated UE capability information.

[0124] According to an embodiment of the present application, a device for acquiring capability information of a user equipment UE is provided, the device further comprising:

[0125] a fourth receiving unit, configured to receive a capability update request sent by the UE, wherein the capability update request carries an identifier of the UE and updated UE capability information;

[0126] The second updating unit is configured to update the UE capability information of the UE based on the identifier of the UE.

[0127] According to an embodiment of the present application, a device for acquiring capability information of a user equipment UE is provided, the device further comprising:

[0128] A fifth receiving unit, configured to receive a capability deletion message sent by the first network node;

[0129] The first deleting unit is configured to delete the UE capability information of the UE based on the capability deletion message.

[0130] According to an embodiment of the present application, a device for acquiring capability information of a user equipment UE is provided, the device further comprising:

[0131] a sixth receiving unit, configured to receive a deregistration status notification sent by the UE, where the deregistration status notification is used to instruct the UE to exit the distributed network;

[0132] The second deleting unit is configured to delete the UE capability information of the UE based on the deregistration status notification.

[0133] According to an embodiment of the present application, a device for acquiring capability information of a user equipment UE is provided, the device further comprising:

[0134] A seventh receiving unit is configured to receive subscription information of the capability information sent by the first network node.

[0135] In a ninth aspect, an embodiment of the present application further provides a device for acquiring capability information of a user equipment UE, which is applied to a UE, and the device includes:

[0136] A first sending unit, configured to send a registration request to a first network node, wherein the registration request carries a node identifier of a second network node, and the second network node stores UE capability information of the UE;

[0137] The registration request is used by the first network node to obtain UE capability information of the UE from the second network node.

[0138] According to an embodiment of the present application, a device for acquiring capability information of a user equipment UE is provided, the device further comprising:

[0139] The second sending unit is configured to send a registration request to the second network node, where the registration request includes UE capability information of the UE.

[0140] According to an embodiment of the present application, a device for acquiring capability information of a user equipment UE is provided, the device further comprising:

[0141] The third sending unit is used to send a capability update request to the first network node, where the capability update request carries the identifier of the UE and updated UE capability information, and the capability update request is used to update the UE capability information of the UE.

[0142] According to an embodiment of the present application, a device for acquiring capability information of a user equipment UE is provided, the device further comprising:

[0143] The fourth sending unit is used to send a capability update request to the second network node, where the capability update request carries the identifier of the UE and updated UE capability information, and the capability update request is used to update the UE capability information of the UE.

[0144] According to an embodiment of the present application, a device for acquiring capability information of a user equipment UE is provided, the device further comprising:

[0145] A fifth sending unit is used to send a deregistration status notification to the first network node or the second network node, where the deregistration status notification is used to instruct the UE to exit the distributed network, and the deregistration status notification is used to delete the UE capability information of the UE in the second network node.

[0146] In the tenth aspect, an embodiment of the present application also provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the method for obtaining user equipment UE capability information as described in any one of the first aspect above; or, the method for obtaining user equipment UE capability information as described in any one of the second aspect above; or, the method for obtaining user equipment UE capability information as described in any one of the third aspect above.

[0147] According to the method and device for obtaining the capability information of a user equipment UE provided in the embodiment of the present application, when the user equipment moves to the area of ​​the first network node, the user equipment UE will send the node identifier of the second network node storing the UE capability information of the UE to the first network node. In this way, the first network node can directly send a UE capability information acquisition request to the second network node according to the node identifier of the second network node. After the second network node receives the UE capability information acquisition request sent by the first network node, it will send the UE capability information of the UE to the first network node, so that the UE does not need to re-report its own UE capability information to the first network node, thereby reducing the signaling overhead of the UE and reducing the power consumption of the UE. BRIEF DESCRIPTION OF THE DRAWINGS

[0148] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0149] Figure 1 One of the flow charts of the method for obtaining the capability information of the user equipment UE provided in the embodiment of the present application;

[0150] Figure 2 A second flow chart of a method for obtaining capability information of a user equipment UE provided in an embodiment of the present application;

[0151] Figure 3 A third flowchart of a method for obtaining capability information of a user equipment UE provided in an embodiment of the present application;

[0152] Figure 4 One of the flow charts of the method for reporting the capability information of the user equipment UE provided in the embodiment of the present application;

[0153] Figure 5 One of the flow charts of the method for updating the capability information of the user equipment UE provided in the embodiment of the present application;

[0154] Figure 6One of the flow charts of the method for deleting capability information of user equipment UE provided in an embodiment of the present application;

[0155] Figure 7 A second flowchart of a method for reporting capability information of a user equipment UE provided in an embodiment of the present application;

[0156] Figure 8 A second flowchart of a method for updating capability information of a user equipment UE provided in an embodiment of the present application;

[0157] Fig. 9 One of the structural diagrams of the network topology provided in the embodiment of the present application;

[0158] Fig.10 A third flowchart of a method for updating capability information of a user equipment UE provided in an embodiment of the present application;

[0159] Fig.11 The second schematic diagram of the network topology provided in the embodiment of the present application;

[0160] Fig.12 A second flowchart of a method for deleting capability information of a user equipment UE provided in an embodiment of the present application;

[0161] Fig.13 A third flowchart of a method for deleting capability information of a user equipment UE provided in an embodiment of the present application;

[0162] Fig.14 A third flowchart of a method for reporting capability information of a user equipment UE provided in an embodiment of the present application;

[0163] Fig.15 A fourth flowchart of a method for updating capability information of a user equipment UE provided in an embodiment of the present application;

[0164] Fig.16 A flowchart of a method for subscribing to capability information of a user equipment UE provided in an embodiment of the present application;

[0165] Fig.17 A fourth flowchart of a method for deleting capability information of a user equipment UE provided in an embodiment of the present application;

[0166] Fig.18 A fifth flowchart of a method for deleting capability information of a user equipment UE provided in an embodiment of the present application;

[0167] Fig.19 A flowchart of a method for reporting or updating capability information of a user equipment UE provided in an embodiment of the present application;

[0168] Fig. 20A schematic diagram of the structure of a first network node provided in an embodiment of the present application;

[0169] Fig.21 A schematic diagram of the structure of a second network node provided in an embodiment of the present application;

[0170] Fig. 22 A schematic diagram of the structure of a user equipment UE provided in an embodiment of the present application;

[0171] Fig.23 One of the structural schematic diagrams of the device for acquiring capability information of user equipment UE provided in an embodiment of the present application;

[0172] Fig.24 A second structural diagram of a device for acquiring capability information of a user equipment UE provided in an embodiment of the present application;

[0173] Fig.25 The third structural diagram of the device for obtaining the capability information of the user equipment UE provided in the embodiment of the present application. DETAILED DESCRIPTION

[0174] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0175] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0176] The technical solution provided in the embodiments of the present application can be applicable to a variety of systems, such as a 5G system.

[0177] Among them, the terminal involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal may also be different. For example, in a 5G system, the terminal may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0178] The network device involved in the embodiment of the present application may be a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary network device (evolutional Node B, eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (Home evolved Node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

[0179] For example, in an embodiment of the present application, one or more antennas may be used between the network device and the terminal device for multiple input multiple output (MIMO) transmission, and the MIMO transmission may be single user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of the antenna combination, the MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it may be diversity transmission, precoded transmission or beamforming transmission, etc.

[0180] In order to facilitate a clearer understanding of the embodiments of the present application, some relevant background knowledge is first introduced as follows.

[0181] The core idea of ​​the sixth generation mobile communication technology (6-Generation, 6G) networking design is the Distributed Autonomous Network (DAN), which realizes the transformation of network architecture from centralized to centralized + distributed collaborative mode. The core idea of ​​DAN is the on-demand expansion of homogeneous distributed nodes to meet the 6G wide area, multi-scenario, on-demand access requirements. The distributed small cloud unit (SCU) is the most critical module unit of the DAN architecture. It is characterized by being distributed, autonomous, self-contained, and having a consistent organizational framework. It can be customized, established on demand, and quickly networked.

[0182] User Equipment (UE) capabilities are divided into network capabilities and wireless capabilities.

[0183] UE network capabilities include supported encryption algorithms (EEA) and integrity algorithms (EIA), support for cellular Internet of Things (CIoT), proximity service (ProSe) (device to device, D2D), dual connectivity Evolved UMTS (Universal Mobile Telecommunications System) Terrestrial Radio Access Network and NR (New Radio), DCNR) and vehicle to everything (V2X) and other features, as well as new capabilities added in 6G, such as artificial intelligence (AI), data, computing, synaesthesia, security, orchestration, monitoring and configuration.

[0184] The UE radio capability information contains information about the Radio Access Technology (RAT) supported by the UE (e.g. power class, frequency band, etc.). Therefore, this information may be large enough that it is not desirable to send it over the radio interface at every transition from CM-IDLE to CM-COONECTED of the UE's Connection Manager (CM) state in the Access and Mobility management Function (AMF). To avoid this radio overhead, the AMF shall store the UE radio capability information during the UE's CM IDLE state and the UE's RM-REGISTERED state, and the AMF shall (if available) send its latest UE radio capability information to the RAN in an N2 request message, i.e., an Initial Context Setup Request or a UE Radio Capability Check Request.

[0185] When the UE Resource Manager (RM) state in the AMF transitions to RM-DEREGISTERED, the AMF deletes the UE radio capabilities. The AMF deletes the UE radio capabilities when it receives a Registration Request with the Registration Type set to Initial Registration, or when it receives the first Registration Request with the Registration Type set to Mobility Registration Update after Evolved-UMTS (Universal MobileTelecommunications System) Terrestrial Radio Access (E-UTRA) / Evolved Packet Core Attach (EPC Attach). Even during AMF reselection, the UE radio capabilities are maintained in the core network.

[0186] If the UE's NG-RAN UE radio capabilities information changes while in CM-IDLE state, the UE shall perform a Registration procedure with Registration Type set to MOBILE Registration Update indicating "UE radio capabilities update". When the AMF receives a Registration Update Request with "UE radio capabilities update", it shall delete any UE radio capabilities information it has stored for the UE. If a trigger to change the UE's NG-RAN UE radio capabilities information occurs while the UE is in CM-CONNECTED state, the UE shall first enter CM-IDLE state and then perform a Registration procedure with Registration Type set to MOBILE Registration Update indicating "UE radio capabilities update".

[0187] In order to solve the problems of large UE signaling overhead and high UE power consumption in the prior art, so as to reduce the power consumption of UE, an embodiment of the present application provides a method for obtaining the capability information of user equipment UE. The UE carries the UE capability (including wireless capability and network capability, wherein the wireless capability includes power level, frequency band, etc., and the network capability includes AI capability, data capability, computing capability, synaesthesia capability, security capability, orchestration capability, monitoring capability, configuration capability, etc.) at the time of initial registration. The UE capability can be stored and managed by the AMF in a centralized node or a distributed node, or the UE reports its capability information to the newly added network element CSMF in the distributed network for storage and management. The CSMF can be deployed in a distributed node or in a centralized node, and the specific deployment location is not limited. When the UE accesses the new distributed node, the AMF in the new distributed node can obtain and subscribe to the UE capability from the network element storing the UE capability, and does not need to be stored locally, thereby reducing the burden of storage and management of the AMF in some distributed nodes. At the same time, after the UE accesses a new distributed node, it does not need to retransmit the UE capabilities to the AMF in the new distributed node through the RAN, which saves air interface resources, reduces the UE's signaling overhead, and thus reduces the UE's power consumption.

[0188] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0189] Figure 1 This is one of the flow charts of the method for obtaining the capability information of the user equipment UE provided in the embodiment of the present application. The method for obtaining the capability information of the user equipment UE can be applied to the first network node where the UE is currently located. For example, see Figure 1 As shown, the method for acquiring the user equipment UE capability information may include:

[0190] Step 101: Receive a registration request sent by a UE, where the registration request carries a node identifier of a second network node, and the second network node stores UE capability information of the UE.

[0191] For example, the first network node is the network node where the UE is currently located, and the first network node may be an AMF in a centralized node or an AMF in a distributed node in a distributed network. The second network node may be an AMF in a centralized node or an AMF in a distributed node in a distributed network, or a CSMF in a centralized node, or a CSMF in a distributed node, or a CSMF in another network node. The second network node stores the UE capability information of the UE.

[0192] When the UE moves to the area of ​​the first network node, the UE will send a registration request to the first network node. When the UE sends the registration request, the registration request carries the node identifier of the second network node storing the UE capability information of the UE.

[0193] Step 102: Send a UE capability information acquisition request to the second network node based on the node identifier of the second network node.

[0194] Specifically, after receiving the registration request sent by the UE, the first network node may send a UE capability information acquisition request to the second network node according to the node identifier of the second network node carried in the registration request, so as to acquire the UE capability information of the UE.

[0195] Step 103: Receive UE capability information of the UE sent by the second network node.

[0196] Specifically, after receiving the UE capability information acquisition request sent by the first network node, the second network node determines the UE capability information of the UE required by the first network node according to the UE capability information acquisition request, and sends the UE capability information to the first network node.

[0197] The UE may exchange information with the first network node or the second network node through the radio access network RAN.

[0198] In the method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, when the user equipment moves to an area of ​​a first network node, the user equipment UE sends a node identifier of a second network node storing the UE capability information of the UE to the first network node. In this way, the first network node can directly send a UE capability information acquisition request to the second network node according to the node identifier of the second network node. After the second network node receives the UE capability information acquisition request sent by the first network node, it sends the UE capability information of the UE to the first network node, so that the UE does not need to re-report its own UE capability information to the first network node, thereby reducing the signaling overhead of the UE and reducing the power consumption of the UE.

[0199] Based on the above Figure 1The embodiment shown is, for example, in the embodiment of the present application, the method for obtaining the capability information of the user equipment UE also includes: the first network node receives a capability update request sent by the UE, and the capability update request carries the UE identifier and the updated UE capability information; after receiving the capability update request, the first network node sends the updated UE capability information carried in the capability update request to the second network node, and instructs the second network node to update the UE capability information corresponding to the UE identifier, so that the second network node can update its stored UE capability information in a timely manner, thereby effectively ensuring the accuracy of the UE capability information stored therein.

[0200] For example, when the UE has moved to the first network node, and when the first network node is the AMF of a distributed node of a distributed network, and the second network node storing the UE capability information is the AMF of a centralized node of the distributed network; or, when the first network node is the AMF of a distributed node 1 of a distributed network, and the second network node storing the UE capability information is the AMF of a distributed node 2 of the distributed network; or, when the first network node is the AMF of a centralized node of a distributed network, and the second network node storing the UE capability information is the AMF of a distributed node of a distributed network, the UE needs to instruct the second network node to update the stored UE capability information of the UE through the first network node, so that the stored UE capability information can be updated in time, thereby effectively ensuring the accuracy of the stored UE capability information.

[0201] Therefore, after the UE capability information of the UE is updated, the first network node will receive a capability update request sent by the UE, and the capability update request carries the identifier of the UE and the updated UE capability information of the UE. After receiving the capability update request, the first network node will send the updated UE capability information carried in the capability update request to the second network node storing the UE capability information, and instruct the second network node to update the UE capability information corresponding to the identifier of the UE according to the identifier of the UE.

[0202] The method for acquiring UE capability information provided by the embodiment of the present application, when the UE capability of the UE is updated, the UE can send the updated UE capability information to the second network node storing the UE capability information through the first network node where it is currently located, and instruct the second network node to update the UE capability information corresponding to the UE identifier, so as to timely update the UE capability information stored in the second network node, so that the second network node can timely update the UE capability information stored therein, thereby effectively ensuring the accuracy of the UE capability information stored therein.

[0203] Based on the above Figure 1The embodiment shown is an example. In the embodiment of the present application, the method for obtaining the user equipment UE capability information also includes: the first network node sends a capability deletion message to the second network node, and the capability deletion message is used to instruct the second network node to delete the UE capability information of the UE.

[0204] Specifically, when the UE exits the distributed network, the distributed network no longer needs to provide services to the UE. Therefore, when the first network node determines that the UE exits the distributed network, it can send a capability deletion message to the second network node storing the UE capability information of the UE, and the capability deletion message is used to instruct the second network node to delete the UE capability information of the UE that has exited the distributed network, so that the second network node can delete the stored UE capability information in time, thereby releasing the storage resources used to store the UE capability information, thereby improving the utilization rate of the storage resources.

[0205] It can be understood that the UE exits the distributed network including the following two situations: one is that the UE exits the distributed network normally, and the other is that an abnormality occurs to the UE and the UE exits the distributed network abnormally.

[0206] According to the method for acquiring UE capability information provided in an embodiment of the present application, after the UE exits the distributed network, the first network node where the UE is currently located sends a capability deletion message to the second network node storing the UE capability information of the UE, so as to promptly delete the UE capability information stored in the second network node and promptly release the storage resources of the second network node.

[0207] Based on the above Figure 1 The embodiment shown is an example. In an embodiment of the present application, the method for obtaining capability information of a user equipment UE also includes: a process in which a first network node sends a capability deletion message to a second network node specifically includes: the first network node receives a deregistration status notification sent by the UE, and the deregistration status notification is used to instruct the UE to exit the distributed network; the first network node sends a capability deletion message to the second network node based on the registration status notification.

[0208] Specifically, when the UE exits the distributed network normally, the UE will send a deregistration status notification to the first network node, and the deregistration status notification is used to instruct the UE to exit the distributed network. When the first network node determines that the UE exits the distributed network based on the deregistration status notification, it can send a capability deletion message to the second network node storing the UE capability information of the UE, and the capability deletion message is used to instruct the second network node to delete the UE capability information of the UE that has exited the distributed network.

[0209] According to the method for acquiring UE capability information provided in an embodiment of the present application, after the UE exits the distributed network, the first network node sends a capability deletion message to the second network node storing the UE capability information of the UE, so as to promptly delete the UE capability information stored in the second network node and promptly release the storage resources of the second network node.

[0210] Based on the above Figure 1 The embodiment shown is illustrative. In the embodiment of the present application, the method for obtaining the capability information of the user equipment UE further includes:

[0211] Based on the node identifier of the second network node, subscription information of the UE capability information is sent to the second network node.

[0212] Specifically, after receiving the registration request sent by the UE, the first network node may also send a request for reading UE capability information to the second network node based on the node identifier of the second network node carried in the registration request. The request for reading UE capability information is used to subscribe to the UE capability information of the UE from the second network node. Based on the subscription of the first network node, if the UE capability information of the UE in the second network node changes, the second network node will notify the first network node of the change.

[0213] According to the method for acquiring UE capability information provided in the embodiment of the present application, the first network node can subscribe to the UE capability information of the UE by sending subscription information of the UE capability information to the second network node, so as to be informed in time when the UE capability information of the UE changes.

[0214] Figure 2 The second flow chart of the method for obtaining the capability information of the user equipment UE provided in the embodiment of the present application can be applied to the second network node, and the second network node stores the UE capability information point of the UE. For example, see Figure 2 As shown, the method for acquiring the user equipment UE capability information may include:

[0215] Step 201: Receive a UE capability information acquisition request sent by a first network node.

[0216] For example, the first network node is the network node where the UE is currently located, and the first network node may be an AMF in a centralized node or an AMF in a distributed node in a distributed network. The second network node may be an AMF in a centralized node or an AMF in a distributed node in a distributed network, or a CSMF in a centralized node, or a CSMF in a distributed node, or a CSMF in another network node. The first network node is the network node where the UE is currently located, and the second network node stores the UE capability information of the UE.

[0217] The second network node receives a UE capability information acquisition request sent by the first network node, where the UE capability information acquisition request is used for the first network node to acquire, from the second network node, UE capability information of the UE stored in the second network node.

[0218] The UE may exchange information with the first network node or the second network node through the radio access network RAN.

[0219] Step 202: Send UE capability information of the UE to the first network node; wherein the UE capability information of the UE is stored in the second network node.

[0220] Specifically, after receiving the UE capability information acquisition request sent by the first network node, the second network node determines the UE capability information required by the first network node according to the UE capability information acquisition request, and sends the UE capability information to the first network node.

[0221] In the method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, when the user equipment moves to an area of ​​a first network node, the user equipment UE sends a node identifier of a second network node storing the UE capability information of the UE to the first network node. In this way, the first network node can directly send a UE capability information acquisition request to the second network node according to the node identifier of the second network node. After the second network node receives the UE capability information acquisition request sent by the first network node, it sends the UE capability information of the UE to the first network node, so that the UE does not need to re-report its own UE capability information to the first network node, thereby reducing the signaling overhead of the UE and reducing the power consumption of the UE.

[0222] Based on the above Figure 2 The embodiment shown is an example. In the embodiment of the present application, the method for obtaining the capability information of the user equipment UE also includes: the second network node receives a registration request sent by the UE, and the registration request includes the UE capability information of the UE; the second network node stores the UE capability information of the UE.

[0223] Specifically, when the UE initially registers in the distributed network, it sends a registration request to the second network node, and the registration request includes the UE capability information of the UE. After receiving the registration request, the second network node stores the UE capability information of the UE carried in the registration request.

[0224] In the method for obtaining UE capability information provided in the embodiment of the present application, the UE sends the UE capability information to the second network node when registering with the second network node, so that the second network node stores the UE capability information of the UE, so that after the UE moves, the network node where the UE is located can directly obtain the UE capability information from the second network node, without the need for the UE to report the capability, thereby reducing the signaling overhead of the UE and reducing the power consumption of the UE.

[0225] Based on the above Figure 2 The embodiment shown is an example. In the embodiment of the present application, the method for obtaining user equipment UE capability information also includes: the second network node receives updated UE capability information of the UE sent by the first network node; the second network node updates the UE capability information of the UE based on the updated UE capability information.

[0226] Specifically, when the UE capability information of the UE is updated, the UE capability information of the UE stored in the second network node needs to be updated simultaneously, so that the second network node can store the latest UE capability information.

[0227] For example, when the UE has moved to the first network node, and when the first network node is the AMF of a distributed node of a distributed network, and the second network node storing the UE capability information is the AMF of a centralized node of the distributed network; or, when the first network node is the AMF of a distributed node 1 of a distributed network, and the second network node storing the UE capability information is the AMF of a distributed node 2 of the distributed network; or, when the first network node is the AMF of a centralized node of a distributed network, and the second network node storing the UE capability information is the AMF of a distributed node of a distributed network, the UE needs to instruct the second network node through the first network node to update the stored UE capability information of the UE.

[0228] Therefore, after the UE capability information of the UE is updated, a capability update request will be sent to the first network node, and the capability update request carries the identifier of the UE and the updated UE capability information of the UE. After receiving the capability update request, the first network node will send the updated UE capability information carried in the capability update request to the second network node storing the UE capability information, and the second network node will update the UE capability information of the UE after receiving the updated UE capability information.

[0229] The method for acquiring UE capability information provided in the embodiment of the present application enables the second network node to timely update the UE capability information stored in the second network node by receiving the updated UE capability information sent by the first network node, so that the second network node can timely update the UE capability information stored therein, thereby effectively ensuring the accuracy of the UE capability information stored therein.

[0230] Based on the above Figure 2 The embodiment shown is an example. In an embodiment of the present application, the method for obtaining user equipment UE capability information also includes: the second network node receives a capability update request sent by the UE, the capability update request carries an identifier of the UE and updated UE capability information; the second network node updates the UE capability information of the UE based on the identifier of the UE.

[0231] For example, the first network node and the second network node may be AMFs under the same distributed node or centralized node in a distributed network. At this time, after the UE capability information of the UE is updated, the UE may send a capability update request to the second network node directly through the wireless access network instead of through the first network node.

[0232] The capability update request may include the UE identifier and updated UE capability information. The second network node may update the stored UE capability information corresponding to the UE identifier based on the UE identifier and the updated UE capability information.

[0233] The method for acquiring UE capability information provided in the embodiment of the present application enables the second network node to timely update the UE capability information stored in the second network node by receiving a capability update request sent by the UE, so that the second network node can timely update the UE capability information stored therein, thereby effectively ensuring the accuracy of the UE capability information stored therein.

[0234] Based on the above Figure 2 The illustrated embodiment is illustrative. In the embodiment of the present application, the method for obtaining the capability information of the user equipment UE also includes: the second network node receives a capability deletion message sent by the first network node; and the second network node deletes the UE capability information of the UE based on the capability deletion message.

[0235] Specifically, when the UE exits the distributed network normally, the UE will send a deregistration status notification to the first network node, and the deregistration status notification is used to instruct the UE to exit the distributed network. When the first network node determines that the UE exits the distributed network based on the deregistration status notification, the first network node sends a capability deletion message to the second network node storing the UE capability information of the UE. When the second network node receives the capability deletion message sent by the first network node, the second network node deletes the stored UE capability information of the UE based on the capability deletion message.

[0236] According to the method for acquiring UE capability information provided in the embodiment of the present application, after the UE exits the distributed network, the second network node will promptly delete the stored UE capability information according to the capability deletion message sent by the first network node, so as to promptly release the storage resources of the second network node.

[0237] Based on the above Figure 2 The embodiment shown is an example. In an embodiment of the present application, the method for obtaining user equipment UE capability information also includes: the second network node receives a deregistration status notification sent by the UE, and the deregistration status notification is used to instruct the UE to exit the distributed network; the second network node deletes the UE capability information of the UE based on the deregistration status notification.

[0238] Specifically, the first network node and the second network node can be the AMF under the same distributed node or centralized node in the distributed network. At this time, when the UE normally exits the distributed network, the UE can send a deregistration status notification directly to the first network node through the wireless access network. The deregistration status notification is used to instruct the UE to exit the distributed network.

[0239] After receiving the deregistration status notification, the second network node deletes the UE capability information of the UE that has exited the distributed network based on the deregistration status notification.

[0240] According to the method for acquiring UE capability information provided in an embodiment of the present application, after the UE exits the distributed network, the second network node deletes the UE capability information stored in the second network node according to the deregistration status notification sent by the UE, so as to release the storage resources of the second network node in a timely manner.

[0241] Based on the above Figure 2 The illustrated embodiment is illustrative. In the embodiment of the present application, the method for acquiring the capability information of the user equipment UE further includes: the second network node receives subscription information of the UE capability information sent by the first network node.

[0242] Specifically, after the second network node receives the subscription information of the UE capability information sent by the first network node, when the UE capability information of the UE changes, the second network node will notify the first network node of the change.

[0243] According to the method for acquiring UE capability information provided in the embodiment of the present application, the first network node can subscribe to the UE capability information of the UE by sending subscription information of the UE capability information to the second network node, so as to be informed in time when the UE capability information of the UE changes.

[0244] Figure 3 The third flow chart of the method for obtaining the capability information of the user equipment UE provided in the embodiment of the present application is applicable to the UE. For example, see Figure 3 As shown, the method for acquiring the user equipment UE capability information may include:

[0245] Step 301: Send a registration request to a first network node, the registration request carrying a node identifier of a second network node, and the second network node storing UE capability information of the UE; wherein the registration request is used by the first network node to obtain the UE capability information of the UE from the second network node.

[0246] In the method for acquiring capability information of a user equipment UE provided in an embodiment of the present application, when the user equipment moves to an area of ​​a first network node, the user equipment UE sends a node identifier of a second network node storing the UE capability information of the UE to the first network node. In this way, the first network node can directly send a UE capability information acquisition request to the second network node according to the node identifier of the second network node. After the second network node receives the UE capability information acquisition request sent by the first network node, it sends the UE capability information of the UE to the first network node, so that the UE does not need to re-report its own UE capability information to the first network node, thereby reducing the signaling overhead of the UE and reducing the power consumption of the UE.

[0247] Based on the above Figure 3 The embodiment shown is illustrative. In the embodiment of the present application, the method for acquiring the capability information of the user equipment UE also includes: the UE sends a registration request to the second network node, and the registration request includes the UE capability information of the UE.

[0248] Based on the above Figure 3 The embodiment shown is an example. In an embodiment of the present application, the method for obtaining user equipment UE capability information also includes: the UE sends a capability update request to the first network node, the capability update request carries the UE identifier and updated UE capability information, and the capability update request is used to update the UE capability information of the UE.

[0249] Based on the above Figure 3 The embodiment shown is an example. In an embodiment of the present application, the method for obtaining user equipment UE capability information also includes: the UE sends a capability update request to the second network node, the capability update request carries the UE identifier and updated UE capability information, and the capability update request is used to update the UE capability information of the UE.

[0250] Based on the above Figure 3 The embodiment shown is an example. In an embodiment of the present application, the method for obtaining user equipment UE capability information also includes: the UE sends a deregistration status notification to the first network node or the second network node, the deregistration status notification is used to instruct the UE to exit the distributed network, and the deregistration status notification is used to delete the UE capability information of the UE in the second network node.

[0251] In order to facilitate understanding of the data transmission method provided in the embodiment of the present application, the data transmission method provided in the embodiment of the present application will be described in detail below through the following multiple specific embodiments.

[0252] Embodiment 1: The AMF in the centralized node is responsible for the storage and management of UE capability information.

[0253] Example 1.1: UE capability information reporting

[0254] Figure 4 One of the flow charts of the method for reporting the capability information of the user equipment UE provided in the embodiment of the present application is as follows: Figure 4 As shown, taking the first network node where the UE is currently located as AMF2 in the distributed node, and the second network node storing the UE capability information of the UE as AMF1 in the centralized node as an example, the method for reporting the user equipment UE capability information includes the following steps:

[0255] Step 401: The UE selects AMF1 in the centralized node during the initial registration, and sends a registration request to the AMF1 in the centralized node through the radio access network RAN. The registration request carries the UE identification and UE capability information, such as registration type, Subscription concealed identifier (SUCI), requested network slice selection assistance information (NSSAI), and UE capabilities and other related information.

[0256] Step 402: AMF1 in the centralized node updates the UE context and stores the UE capability information of the UE carried in the registration request in a local UE capability information list, in which a mapping relationship between the UE identifier and the UE capability information is stored.

[0257] Note: The authentication during the registration process and the related operations such as subscribing to UE contract data from Unified Data Management (UDM) are omitted here.

[0258] Step 403: AMF1 in the centralized node replies a registration response to the UE via the RAN.

[0259] Step 404: After the UE accesses the AMF2 in the distributed node, the UE sends a registration request to the AMF2 in the distributed node through the RAN, and the registration request carries the identifier of the AMF1.

[0260] Step 405: AMF2 in the distributed node sends a UE capability information acquisition request to AMF1 in the centralized node based on the identifier of AMF1.

[0261] Step 406: AMF1 in the centralized node sends the UE capability information of the UE to AMF2 in the distributed node based on the UE capability information acquisition request.

[0262] In this way, when the user equipment UE moves to AMF2 in the distributed node, AMF2 in the distributed node can obtain the UE capability information from AMF1 in the centralized node that stores the UE capability information. The UE does not need to re-report its own UE capability information, thereby reducing the UE's signaling overhead and the UE's power consumption.

[0263] Example 1.2: UE capability information update

[0264] Figure 5 One of the flow charts of the method for updating the capability information of the user equipment UE provided in the embodiment of the present application is as follows: Figure 5 As shown, taking the first network node where the UE is currently located as the centralized node AMF1, and the second network node storing the UE capability information of the UE is also the centralized node AMF1 as an example, the method for updating the user equipment UE capability information includes the following steps:

[0265] Step 501: When the UE's capabilities change, the UE sends a capability update request to the AMF1 in the centralized node through the RAN. The capability update request carries the UE's identity and updated UE capability information. If the UE is in the CM-CONNECTED state, it needs to return to the CM-IDLE state first, and then perform the registration update process to update the UE capability information.

[0266] Step 502: Based on the updated UE capability information, the AMF1 in the centralized node updates the UE capability information of the UE in the locally stored UE capability information list.

[0267] Step 503: AMF1 in the centralized node returns a capability update response to the UE via the RAN.

[0268] In this way, the AMF1 in the centralized node can update the stored UE capability information in a timely manner, thereby effectively ensuring the accuracy of the stored UE capability information.

[0269] Example 1.3: Deletion of UE capability information

[0270] Figure 6 One of the flow charts of the method for deleting the capability information of the user equipment UE provided in the embodiment of the present application is as follows: Figure 6 As shown, taking the first network node where the UE is currently located as AMF2 in the distributed node, and the second network node storing the UE capability information of the UE as AMF1 in the centralized node as an example, the method for deleting the user equipment UE capability information includes the following steps:

[0271] Step 601: The UE sends a deregistration status notification to the AMF2 in the distributed node through the RAN.

[0272] Step 602: Based on the deregistration status notification, AMF2 in the distributed node sends a capability deletion message to AMF1 in the centralized node.

[0273] Step 603: AMF1 in the centralized node deletes the locally stored UE capability information of the UE based on the capability deletion message.

[0274] Step 604: AMF2 in the distributed node returns a deregistration response to the UE.

[0275] In this way, after the UE exits the distributed network, according to the capability deletion message sent by AMF2 in the distributed node, AMF1 in the centralized node will promptly delete the stored UE capability information and release the storage resources of AMF1 in the centralized node in a timely manner.

[0276] Embodiment 2: The AMF in a certain distributed node is responsible for the storage and management of UE capability information.

[0277] Example 2.1: UE capability information reporting

[0278] Figure 7 A second flow chart of a method for reporting capability information of a user equipment UE provided in an embodiment of the present application is as follows: Figure 7 As shown, taking the first network node where the UE is currently located as AMF2 in distributed node 2, the second network node storing the UE capability information of the UE as AMF1 in distributed node 1, and distributed node 1 and distributed node 2 are adjacent as an example, the method for reporting the user equipment UE capability information includes the following steps:

[0279] Step 701: The UE selects AMF1 in distributed node 1 during initial registration, and sends a registration request to AMF1 in distributed node 1 through the radio access network RAN. The registration request carries the UE identifier and UE capability information, such as registration type, SUCI, NSSAI, and UE capability and other related information.

[0280] Step 702: AMF1 in distributed node 1 updates the UE context and stores the UE capability information of the UE carried in the registration request in a local UE capability information list, in which a mapping relationship between the UE identifier and the UE capability information is stored.

[0281] Note: The authentication during the registration process and the related operations such as subscribing UE contract data to UDM are omitted here.

[0282] Step 703: AMF1 in distributed node 1 replies a registration response to the UE via the RAN.

[0283] Step 704: When the UE accesses the AMF2 in the distributed node 2, the UE sends a registration request to the AMF2 in the distributed node 2 through the RAN, and the registration request carries the identifier of the AMF1.

[0284] Step 705: AMF2 in distributed node 2 sends a UE capability information acquisition request to AMF1 in distributed node 1 based on the identifier of AMF1.

[0285] Step 706: Based on the UE capability information acquisition request, AMF1 in distributed node 1 sends UE capability information to AMF2 in distributed node 2.

[0286] In this way, when the user equipment UE moves to the AMF2 in the distributed node 2, the AMF2 in the distributed node 2 can obtain the UE capability information from the AMF1 in the distributed node 1 that stores the UE capability information. There is no need for the UE to re-report its own UE capability information, thereby reducing the UE's signaling overhead and the UE's power consumption.

[0287] Example 2.21: UE capability information update

[0288] Figure 8 The second flowchart of the method for updating the capability information of the user equipment UE provided in the embodiment of the present application is as follows: Fig. 9 This is one of the schematic diagrams of the network topology provided in the embodiment of the present application. Figure 8 Shown and Fig. 9 As shown in , taking the first network node where the UE is currently located as AMF1 in distributed node 1, the second network node storing the UE capability information of the UE as AMF1 in distributed node 1, and the network topology is fully connected as an example, the method for updating the user equipment UE capability information includes the following steps:

[0289] Step 801: When the UE's capabilities change, the UE sends a capability update request to AMF1 in distributed node 1 through RAN. The capability update request carries the UE's identity and updated UE capability information. If the UE is in CM-CONNECTED state, it needs to return to CM-IDLE state first, and then perform the registration update process to update the capability information.

[0290] Step 802: Based on the updated UE capability information, AMF1 in distributed node 1 updates the UE capability information of the UE in the locally stored UE capability information list.

[0291] Step 803: AMF1 in distributed node 1 returns a capability update response to the UE via the RAN.

[0292] In this way, the AMF1 in the distributed node 1 can update the stored UE capability information in a timely manner, thereby effectively ensuring the accuracy of the stored UE capability information.

[0293] Example 2.22: UE capability information update

[0294] Fig.10 The third flowchart of the method for updating the capability information of the user equipment UE provided in the embodiment of the present application is as follows: Fig.11 This is a second schematic diagram of the network topology provided in the embodiment of the present application. Fig.10 Shown and Fig.11 As shown, taking the first network node where the UE is currently located as AMF3 in distributed node 3, the second network node storing the UE capability information of the UE as AMF1 in distributed node 1, and distributed node 3 is not adjacent to distributed node 1, and distributed node 1 and distributed node 3 are respectively adjacent to distributed node 2 as an example, the method for updating the user equipment UE capability information includes the following steps:

[0295] Step 1001: When the UE's capabilities change, the UE sends a capability update request to the AMF3 in the distributed node 3 via the RAN. The capability update request carries the UE's identifier and updated UE capability information. If the UE is in the CM-CONNECTED state, it needs to return to the CM-IDLE state first, and then perform the registration update process to update the capability information.

[0296] Step 1002: AMF3 in distributed node 3 forwards updated UE capability information to AMF2 in distributed node 2.

[0297] Step 1003: AMF2 in distributed node 2 forwards the updated UE capability information to AMF1 in distributed node 1.

[0298] Step 1004: Based on the updated UE capability information, AMF1 in distributed node 1 updates the UE capability information of the UE in the locally stored UE capability information list

[0299] Step 1005: AMF1 in distributed node 1 returns a capability update response to AMF2 in distributed node 2.

[0300] Step 1006: AMF2 in distributed node 2 returns a capability update response to AMF3 in distributed node 3.

[0301] Step 1007: AMF3 in distributed node 3 returns a capability update response to the UE via RAN.

[0302] In this way, the AMF1 in the distributed node 1 can update the stored UE capability information in a timely manner, thereby effectively ensuring the accuracy of the stored UE capability information.

[0303] Example 2.31: Deletion of UE capability information

[0304] Fig.12 A second flow chart of a method for deleting capability information of a user equipment UE provided in an embodiment of the present application is as follows: Fig.12 As shown, taking the first network node where the UE is currently located as AMF1 in distributed node 1, the second network node storing the UE capability information of the UE as AMF1 in distributed node 1, and the network topology is fully connected as an example, the method for deleting the user equipment UE capability information includes the following steps:

[0305] Step 1201: The UE sends a deregistration status notification to AMF1 in distributed node 1 through the RAN.

[0306] Step 1202: AMF1 in distributed node 1 deletes the locally stored UE capability information of the UE based on the deregistration status notification.

[0307] Step 1203: AMF1 in distributed node 1 returns a deregistration response to the UE.

[0308] In this way, after the UE exits the distributed network, according to the deregistration status notification sent by the user equipment UE, the AMF1 in the distributed node 1 will promptly delete the stored UE capability information and release the storage resources of the AMF1 in the distributed node 1 in a timely manner.

[0309] Example 2.32: Deletion of UE capability information

[0310] Fig.13 A flowchart of a method for deleting UE capability information provided in an embodiment of the present application is shown in FIG. Fig.13 As shown, taking the first network node where the UE is currently located as AMF3 in distributed node 3, the second network node storing the UE capability information of the UE as AMF1 in distributed node 1, and distributed node 3 is not adjacent to distributed node 1, and distributed node 1 and distributed node 3 are respectively adjacent to distributed node 2 as an example, the method for deleting the user equipment UE capability information includes the following steps:

[0311] Step 1301: The UE sends a deregistration status notification to AMF3 in distributed node 3 through RAN.

[0312] Step 1302: Based on the deregistration status notification, AMF3 in distributed node 3 sends a capability deletion message to AMF2 in distributed node 2.

[0313] Step 1303: AMF2 in distributed node 2 forwards the capability deletion message to AMF1 in distributed node 1.

[0314] Step 1304: AMF1 in distributed node 1 deletes the locally stored UE capability information of the UE based on the capability deletion message.

[0315] Step 1305: AMF3 in distributed node 3 returns a deregistration response to the UE via the RAN.

[0316] In this way, after the UE exits the distributed network, according to the capability deletion message sent by AMF3 in distributed node 3, AMF1 in distributed node 1 will promptly delete the stored UE capability information and release the storage resources of AMF1 in distributed node 1 in a timely manner.

[0317] Embodiment 3: A distributed network adds a CSMF (Capability Storage and Management Functions) network element to store and manage the UE capability. The CSMF can be deployed in a distributed node or a centralized node, and the specific deployment location is not limited.

[0318] Example 3.11: UE capability information reporting

[0319] Fig.14 A third flow chart of a method for reporting capability information of a user equipment UE provided in an embodiment of the present application is as follows: Fig.14 As shown, the method for reporting the user equipment UE capability information includes the following steps:

[0320] Step 1401: The UE sends a registration request to the CSMF through the RAN. The registration request carries relevant information such as the UE capability information and the UE identifier of the UE.

[0321] Step 1402: The CSMF locally caches the mapping relationship between the UE identifier and the UE capability information of the UE.

[0322] Step 1403: The CSMF returns a registration response to the UE through the RAN, and the registration response carries the CSMF identifier.

[0323] In this way, when the user equipment UE moves to a certain network node, the network node can obtain the UE capability information from the CSMF, without the need for the UE to re-report its own UE capability information, thereby reducing the signaling overhead of the UE and reducing the power consumption of the UE.

[0324] Example 3.2: UE capability information update

[0325] Fig.15A fourth flow chart of a method for updating capability information of a user equipment UE provided in an embodiment of the present application is as follows: Fig.15 As shown, the method for updating the user equipment UE capability information includes the following steps:

[0326] Step 1501: When the capability of the UE changes, the UE sends a capability update request to the CSMF through the RAN. The capability update request carries the UE identifier and updated UE capability information.

[0327] Step 1502: The CSMF updates the locally stored UE capability information of the UE.

[0328] Step 1503: The CSMF returns a capability update response to the UE via the RAN.

[0329] In this way, the CSMF can timely update the stored UE capability information according to the capability update request sent by the UE, thereby effectively ensuring the accuracy of the stored UE capability information.

[0330] Example 3.3: UE capability information subscription

[0331] Fig.16 A flowchart of a method for subscribing to user equipment UE capability information provided in an embodiment of the present application is shown in FIG. Fig.16 As shown, the method for subscribing to the user equipment UE capability information includes the following steps:

[0332] Step 1601: The UE sends a registration request to the AMF in the distributed network through the RAN, and carries relevant information such as the registration type, SUCI, requested NSSAI and CSMF identifier in the registration request message.

[0333] Step 1602: AMF updates the UE context and sends a UE capability information acquisition request to CSMF according to the CSMF identifier carried in the registration request, and the UE capability information acquisition request carries relevant information such as the UE identifier.

[0334] Note: The authentication during the registration process and the related operations such as subscribing UE contract data to UDM are omitted here.

[0335] Step 1603: Based on the UE capability information acquisition request, CSMF sends UE capability information to AMF.

[0336] Step 1604: AMF sends a UE capability information subscription request to CSMF. When the UE capability information of the UE in CSMF changes, CSMF will notify AMF.

[0337] Step 1605: AMF returns a registration response to the UE.

[0338] In this way, based on the UE capability information subscription request of AMF, when the UE capability information of the UE in CSMF changes, CSMF will promptly notify AMF.

[0339] Example 3.41: Deletion of UE capability information

[0340] Fig.17 A fourth flowchart of a method for deleting capability information of a user equipment UE provided in an embodiment of the present application is shown in FIG. Fig.17 As shown, the method for deleting the user equipment UE capability information includes the following steps:

[0341] Step 1701: The UE sends a deregistration status notification to the AMF via the RAN.

[0342] Step 1702: Based on the deregistration status notification, AMF sends a capability deletion message to CSMF.

[0343] Step 1703: Based on the capability deletion message, the CSMF deletes the UE capability information of the UE stored locally.

[0344] Step 1704: CMSF returns a capability deletion response to AMF.

[0345] Step 1705: AMF returns a deregistration response to the UE via the RAN.

[0346] In this way, after the UE exits the distributed network, according to the capability deletion message sent by the AMF, the CSMF will promptly delete the stored UE capability information and release the storage resources of the CSMF in a timely manner.

[0347] Example 3.42: UE capability information deletion

[0348] Fig.18 A fifth flow chart of a method for deleting capability information of a user equipment UE provided in an embodiment of the present application is as follows: Fig.17 As shown, the method for deleting the user equipment UE capability information includes the following steps:

[0349] Step 1801: After receiving the deregistration status sent by the UE through the RAN, the AMF sends a UE deregistration status notification to the CSMF.

[0350] Step 1802: Based on the UE deregistration status notification, the CSMF deletes the UE capability information of the UE stored locally.

[0351] In this way, after the UE exits the distributed network, according to the deregistration status notification sent by the AMF, the CSMF will promptly delete the stored UE capability information and release the storage resources of the CSMF in a timely manner.

[0352] Example 3.5: UE capability information reporting or updating

[0353] Fig.19 A flow chart of a method for reporting or updating capability information of a user equipment UE provided in an embodiment of the present application, such as Fig.19 As shown, taking the CSMF having wireless access capability as an example, the method for reporting the user equipment UE capability information includes the following steps:

[0354] Step 1901: The UE directly sends a registration request to the CSMF, which carries the UE capability information and the UE identifier and other related information. Alternatively, when the UE capability changes, the UE directly sends a capability update request to the CSMF, which carries the UE identifier and updated UE capability information.

[0355] Step 1902: The CSMF locally caches the mapping relationship between the UE identifier and the UE capability information of the UE. Alternatively, the CSMF updates the locally stored UE capability information of the UE.

[0356] Step 1903: The CSMF directly returns a registration response to the UE, and carries the CSMF identifier in the registration response. Alternatively, the CSMF directly returns a capability update response to the UE.

[0357] In this way, when the CSMF has wireless access capability, the UE can send messages directly to the CSMF without going through the wireless access network, thus saving the signaling overhead of the wireless access network.

[0358] Fig. 20 A schematic diagram of the structure of a first network node provided in an embodiment of the present application is shown in FIG. Fig. 20 As shown, the first network node includes a memory 2020, a transceiver 2000, and a processor 2010, wherein:

[0359] The memory 2020 is used to store computer programs; the transceiver 2000 is used to send and receive data under the control of the processor 2010; the processor 2010 is used to read the computer program in the memory 2020 and perform the following operations:

[0360] receiving a registration request sent by a UE, where the registration request carries a node identifier of a second network node, and the second network node stores UE capability information of the UE;

[0361] Sending a UE capability information acquisition request to the second network node based on the node identifier of the second network node;

[0362] Receive UE capability information of the UE sent by the second network node.

[0363] Specifically, the transceiver 2000 is used to receive and send data under the control of the processor 2010.

[0364] Among them, Fig. 20 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 2010 and various circuits of memory represented by memory 2020 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 2000 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium may include a wireless channel, a wired channel, an optical cable, and other transmission media. The processor 2010 is responsible for managing the bus architecture and general processing, and the memory 2020 may store data used by the processor 2010 when performing operations.

[0365] The processor 2010 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0366] For example, in the embodiment of the present application, the processor 2010 is further configured to perform the following operations:

[0367] receiving a capability update request sent by the UE, wherein the capability update request carries an identifier of the UE and updated UE capability information;

[0368] The updated UE capability information is sent to the second network node, and the second network node is instructed to update the UE capability information corresponding to the identifier of the UE.

[0369] For example, in the embodiment of the present application, the processor 2010 is further configured to perform the following operations:

[0370] A capability deletion message is sent to the second network node, where the capability deletion message is used to instruct the second network node to delete UE capability information of the UE.

[0371] For example, in the embodiment of the present application, the sending a capability deletion message to the second network node includes:

[0372] receiving a deregistration status notification sent by the UE, where the deregistration status notification is used to instruct the UE to exit the distributed network;

[0373] Send a capability deletion message to the second network node.

[0374] For example, in the embodiment of the present application, the processor 2010 is further configured to perform the following operations:

[0375] Based on the node identifier of the second network node, subscription information of UE capability information is sent to the second network node.

[0376] It should be noted here that the above-mentioned first network node provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the first network node, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0377] Fig.21 A schematic diagram of the structure of a second network node provided in an embodiment of the present application is shown in FIG. Fig.21 As shown, the second network node includes a memory 2120, a transceiver 2100, and a processor 2110, wherein:

[0378] The memory 2120 is used to store computer programs; the transceiver 2100 is used to send and receive data under the control of the processor 2110; the processor 2110 is used to read the computer program in the memory 2120 and perform the following operations:

[0379] Receiving the UE capability information sent by the first network node to obtain the requested UE capability information;

[0380] sending UE capability information of the UE to the first network node;

[0381] The second network node stores UE capability information of the UE.

[0382] Specifically, the transceiver 2100 is used to receive and send data under the control of the processor 2110 .

[0383] Among them, Fig.21In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 2110 and various circuits of memory represented by memory 2120 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 2100 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium may include a wireless channel, a wired channel, an optical cable, and other transmission media. The processor 2110 is responsible for managing the bus architecture and general processing, and the memory 2120 may store data used by the processor 2110 when performing operations.

[0384] Processor 2110 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0385] For example, in the embodiment of the present application, the processor 2110 is further configured to perform the following operations:

[0386] receiving a registration request sent by the UE, where the registration request includes UE capability information of the UE;

[0387] The UE capability information of the UE is stored.

[0388] For example, in the embodiment of the present application, the processor 2110 is further configured to perform the following operations:

[0389] receiving updated UE capability information of the UE sent by the first network node;

[0390] Based on the updated UE capability information, the UE capability information of the UE is updated.

[0391] For example, in the embodiment of the present application, the processor 2110 is further configured to perform the following operations:

[0392] receiving a capability update request sent by the UE, wherein the capability update request carries an identifier of the UE and updated UE capability information;

[0393] The UE capability information of the UE is updated based on the identifier of the UE.

[0394] For example, in the embodiment of the present application, the processor 2110 is further configured to perform the following operations:

[0395] receiving a capability deletion message sent by the first network node;

[0396] Based on the capability deletion message, UE capability information of the UE is deleted.

[0397] For example, in the embodiment of the present application, the processor 2110 is further configured to perform the following operations:

[0398] receiving a deregistration status notification sent by the UE, where the deregistration status notification is used to instruct the UE to exit the distributed network;

[0399] Based on the deregistration status notification, UE capability information of the UE is deleted.

[0400] For example, in the embodiment of the present application, the processor 2110 is further configured to perform the following operations:

[0401] Receive subscription information of the UE capability information sent by the first network node.

[0402] It should be noted here that the above-mentioned second network node provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the second network node, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0403] Fig. 22 A schematic diagram of the structure of a user equipment UE provided in an embodiment of the present application is shown in FIG. Fig. 22 As shown, the UE includes a memory 2220, a transceiver 2200, and a processor 2210, wherein:

[0404] The memory 2220 is used to store computer programs; the transceiver 2200 is used to send and receive data under the control of the processor 2210; the processor 2210 is used to read the computer program in the memory 2220 and perform the following operations:

[0405] Sending a registration request to the first network node, where the registration request carries a node identifier of the second network node, and the second network node stores UE capability information of the UE;

[0406] The registration request is used by the first network node to obtain UE capability information of the UE from the second network node.

[0407] Specifically, the transceiver 2200 is used to receive and send data under the control of the processor 2210.

[0408] Among them, Fig. 22 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 2210 and various circuits of memory represented by memory 2220 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 2200 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and other transmission media. For different user devices, the user interface 2230 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0409] The processor 2210 is responsible for managing the bus architecture and general processing, and the memory 320 can store data used by the processor 2210 when performing operations.

[0410] Optionally, processor 2210 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD), and the processor can also adopt a multi-core architecture.

[0411] For example, in the embodiment of the present application, the processor 2210 is further configured to perform the following operations:

[0412] A registration request is sent to the second network node, where the registration request includes UE capability information of the UE.

[0413] For example, in the embodiment of the present application, the processor 2210 is further configured to perform the following operations:

[0414] A capability update request is sent to the first network node, where the capability update request carries the identifier of the UE and updated UE capability information, and the capability update request is used to update the UE capability information of the UE.

[0415] For example, in the embodiment of the present application, the processor 2210 is further configured to perform the following operations:

[0416] A capability update request is sent to the second network node, where the capability update request carries the identifier of the UE and updated UE capability information, and the capability update request is used to update the UE capability information of the UE.

[0417] For example, in the embodiment of the present application, the processor 2210 is further configured to perform the following operations:

[0418] A deregistration status notification is sent to the first network node or the second network node, where the deregistration status notification is used to instruct the UE to exit the distributed network, and the deregistration status notification is used to delete the UE capability information of the UE in the second network node.

[0419] It should be noted here that the above-mentioned user equipment UE provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the user equipment UE, and can achieve the same technical effect. The parts and beneficial effects that are the same as those in the method embodiment in this embodiment will not be described in detail here.

[0420] It should be noted here that the above-mentioned user equipment UE provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the user equipment UE, and can achieve the same technical effect. The parts and beneficial effects that are the same as those in the method embodiment in this embodiment will not be described in detail here.

[0421] The embodiment of the present application also provides a device for obtaining capability information of a user equipment UE, which is applied to a first network node. For example, see Fig.23 As shown, Fig.23 This is a structural diagram of a device for acquiring capability information of a user equipment UE provided in an embodiment of the present application. The device 230 for acquiring capability information of the UE may include:

[0422] The first receiving unit 2301 is configured to receive a registration request sent by a UE, where the registration request carries a node identifier of a second network node, and the second network node stores UE capability information of the UE;

[0423] The first sending unit 2302 is configured to send a UE capability information acquisition request to the second network node based on the node identifier of the second network node;

[0424] The second receiving unit 2303 is configured to receive the UE capability information of the UE sent by the second network node.

[0425] For example, in an embodiment of the present application, the device further includes:

[0426] A third receiving unit is configured to receive a capability update request sent by the UE, where the capability update request carries an identifier of the UE and updated UE capability information;

[0427] The second sending unit is configured to send the updated UE capability information to the second network node, and instruct the second network node to update the UE capability information corresponding to the identifier of the UE.

[0428] For example, in an embodiment of the present application, the device further includes:

[0429] The third sending unit is configured to send a capability deletion message to the second network node, where the capability deletion message is used to instruct the second network node to delete the UE capability information of the UE.

[0430] For example, in the embodiment of the present application, the third sending unit is specifically used for:

[0431] receiving a deregistration status notification sent by the UE, where the deregistration status notification is used to instruct the UE to exit the distributed network;

[0432] Send a capability deletion message to the second network node.

[0433] For example, in an embodiment of the present application, the device further includes:

[0434] The fourth sending unit is used to send subscription information of UE capability information to the second network node based on the node identifier of the second network node.

[0435] It should be noted here that the device 230 for obtaining user equipment UE capability information provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the first network node, and can achieve the same technical effect. The parts and beneficial effects that are the same as those in the method embodiment in this embodiment will not be described in detail here.

[0436] The embodiment of the present application also provides a device for obtaining capability information of a user equipment UE, which is applied to a second network node. For example, see Fig.24 As shown, Fig.24 The second structural diagram of the device for acquiring the capability information of the user equipment UE provided in the embodiment of the present application, the device 240 for acquiring the capability information of the UE may include:

[0437] The first receiving unit 2401 is configured to receive a UE capability information acquisition request sent by a first network node;

[0438] A first sending unit 2402 is configured to send UE capability information of the UE to the first network node;

[0439] The second network node stores UE capability information of the UE.

[0440] For example, in an embodiment of the present application, the device further includes:

[0441] A second receiving unit, configured to receive a registration request sent by the UE, where the registration request includes UE capability information of the UE;

[0442] A storage unit is used to store the UE capability information of the UE.

[0443] For example, in an embodiment of the present application, the device further includes:

[0444] A third receiving unit, configured to receive updated UE capability information of the UE sent by the first network node;

[0445] The first updating unit is configured to update the UE capability information of the UE based on the updated UE capability information.

[0446] For example, in an embodiment of the present application, the device further includes:

[0447] a fourth receiving unit, configured to receive a capability update request sent by the UE, wherein the capability update request carries an identifier of the UE and updated UE capability information;

[0448] The second updating unit is configured to update the UE capability information of the UE based on the identifier of the UE.

[0449] For example, in an embodiment of the present application, the device further includes:

[0450] A fifth receiving unit, configured to receive a capability deletion message sent by the first network node;

[0451] The first deleting unit is configured to delete the UE capability information of the UE based on the capability deletion message.

[0452] For example, in an embodiment of the present application, the device further includes:

[0453] a sixth receiving unit, configured to receive a deregistration status notification sent by the UE, where the deregistration status notification is used to instruct the UE to exit the distributed network;

[0454] The second deleting unit is configured to delete the UE capability information of the UE based on the deregistration status notification.

[0455] For example, in an embodiment of the present application, the device further includes:

[0456] A seventh receiving unit is configured to receive subscription information of the capability information sent by the first network node.

[0457] It should be noted here that the device 240 for obtaining the capability information of the user equipment UE provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the second network node, and can achieve the same technical effect. The parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0458] The present application also provides a device for obtaining capability information of a user equipment UE, which is applied to the user equipment UE. For example, see Fig.25 As shown, Fig.25 The third structural diagram of the device for acquiring the capability information of the user equipment UE provided in the embodiment of the present application, the device 250 for acquiring the capability information of the UE may include:

[0459] The first sending unit 2501 is configured to send a registration request to a first network node, where the registration request carries a node identifier of a second network node, and the second network node stores UE capability information of the UE;

[0460] The registration request is used by the first network node to obtain UE capability information of the UE from the second network node.

[0461] For example, in an embodiment of the present application, the device further includes:

[0462] The second sending unit is configured to send a registration request to the second network node, where the registration request includes UE capability information of the UE.

[0463] For example, in an embodiment of the present application, the device further includes:

[0464] The third sending unit is used to send a capability update request to the first network node, where the capability update request carries the identifier of the UE and updated UE capability information, and the capability update request is used to update the UE capability information of the UE.

[0465] For example, in an embodiment of the present application, the device further includes:

[0466] The fourth sending unit is used to send a capability update request to the second network node, where the capability update request carries the identifier of the UE and updated UE capability information, and the capability update request is used to update the UE capability information of the UE.

[0467] For example, in an embodiment of the present application, the device further includes:

[0468] A fifth sending unit is used to send a deregistration status notification to the first network node or the second network node, where the deregistration status notification is used to instruct the UE to exit the distributed network, and the deregistration status notification is used to delete the UE capability information of the UE in the second network node.

[0469] It should be noted here that the device 250 for obtaining the capability information of the user equipment UE provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the user equipment UE, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be described in detail here.

[0470] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0471] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0472] On the other hand, an embodiment of the present application further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the methods provided in the above embodiments, including:

[0473] Receive a registration request sent by a UE, the registration request carrying a node identifier of a second network node, and the second network node storing UE capability information of the UE; based on the node identifier of the second network node, send a UE capability information acquisition request to the second network node; receive the UE capability information of the UE sent by the second network node.

[0474] or,

[0475] Receive a UE capability information acquisition request sent by a first network node; send the UE capability information of the UE to the first network node; wherein the UE capability information of the UE is stored in the second network node.

[0476] or,

[0477] A registration request is sent to a first network node, wherein the registration request carries a node identifier of a second network node, and the second network node stores UE capability information of the UE; wherein the registration request is used by the first network node to obtain the UE capability information of the UE from the second network node.

[0478] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD)), etc.

[0479] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0480] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0481] These processor executable instructions may also be stored in a processor readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0482] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0483] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for acquiring capability information of a user equipment UE, characterized in that: Applied to a first network node, the method comprises: receiving a registration request sent by a UE, where the registration request carries a node identifier of a second network node, and the second network node stores UE capability information of the UE; Sending a UE capability information acquisition request to the second network node based on the node identifier of the second network node; Receive UE capability information of the UE sent by the second network node.

2. The method according to claim 1, characterized in that: The method further comprises: receiving a capability update request sent by the UE, wherein the capability update request carries an identifier of the UE and updated UE capability information; The updated UE capability information is sent to the second network node, and the second network node is instructed to update the UE capability information corresponding to the identifier of the UE.

3. The method according to claim 1 or 2, characterized in that: The method further comprises: A capability deletion message is sent to the second network node, where the capability deletion message is used to instruct the second network node to delete UE capability information of the UE.

4. The method according to claim 3, characterized in that The sending a capability deletion message to the second network node includes: receiving a deregistration status notification sent by the UE, where the deregistration status notification is used to instruct the UE to exit the distributed network; Send a capability deletion message to the second network node.

5. The method according to claim 1 or 2, characterized in that: The method further comprises: Based on the node identifier of the second network node, subscription information of UE capability information is sent to the second network node.

6. A method for acquiring capability information of a user equipment UE, characterized in that: Applied to a second network node, the method comprises: Receiving a UE capability information acquisition request sent by a first network node; sending UE capability information of the UE to the first network node; The second network node stores UE capability information of the UE.

7. The method according to claim 6, characterized in that The method further comprises: receiving a registration request sent by the UE, where the registration request includes UE capability information of the UE; The UE capability information of the UE is stored.

8. The method according to claim 6 or 7, characterized in that: The method further comprises: receiving updated UE capability information of the UE sent by the first network node; Based on the updated UE capability information, the UE capability information of the UE is updated.

9. The method according to claim 6 or 7, characterized in that: The method further comprises: receiving a capability update request sent by the UE, wherein the capability update request carries an identifier of the UE and updated UE capability information; The UE capability information of the UE is updated based on the identifier of the UE.

10. The method according to claim 6 or 7, characterized in that: The method further comprises: receiving a capability deletion message sent by the first network node; Based on the capability deletion message, UE capability information of the UE is deleted.

11. The method according to claim 6 or 7, characterized in that: The method further comprises: receiving a deregistration status notification sent by the UE, where the deregistration status notification is used to instruct the UE to exit the distributed network; Based on the deregistration status notification, UE capability information of the UE is deleted.

12. The method according to claim 6 or 7, characterized in that: The method further comprises: Receive subscription information of the UE capability information sent by the first network node.

13. A method for acquiring capability information of a user equipment UE, characterized in that: Applied to UE, the method includes: Sending a registration request to the first network node, where the registration request carries a node identifier of the second network node, and the second network node stores UE capability information of the UE; The registration request is used by the first network node to obtain UE capability information of the UE from the second network node.

14. The method according to claim 13, characterized in that The method further comprises: A registration request is sent to the second network node, where the registration request includes UE capability information of the UE.

15. The method according to claim 13 or 14, characterized in that The method further comprises: A capability update request is sent to the first network node, where the capability update request carries the identifier of the UE and updated UE capability information, and the capability update request is used to update the UE capability information of the UE.

16. The method according to claim 13 or 14, characterized in that The method further comprises: A capability update request is sent to the second network node, where the capability update request carries the identifier of the UE and updated UE capability information, and the capability update request is used to update the UE capability information of the UE.

17. The method according to claim 13 or 14, characterized in that The method further comprises: A deregistration status notification is sent to the first network node or the second network node, where the deregistration status notification is used to instruct the UE to exit the distributed network, and the deregistration status notification is used to delete the UE capability information of the UE in the second network node.

18. A first network node, characterized in that: Including memory, transceiver, processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: receiving a registration request sent by a UE, where the registration request carries a node identifier of a second network node, and the second network node stores UE capability information of the UE; Sending a UE capability information acquisition request to the second network node based on the node identifier of the second network node; Receive UE capability information of the UE sent by the second network node.

19. The first network node according to claim 18, characterized in that The processor is further configured to perform the following operations: receiving a capability update request sent by the UE, wherein the capability update request carries an identifier of the UE and updated UE capability information; The updated UE capability information is sent to the second network node, and the second network node is instructed to update the UE capability information corresponding to the identifier of the UE.

20. The first network node according to claim 18 or 19, characterized in that: The processor is further configured to perform the following operations: A capability deletion message is sent to the second network node, where the capability deletion message is used to instruct the second network node to delete UE capability information of the UE.

21. The first network node according to claim 20, characterized in that: The sending a capability deletion message to the second network node includes: receiving a deregistration status notification sent by the UE, where the deregistration status notification is used to instruct the UE to exit the distributed network; Send a capability deletion message to the second network node.

22. The first network node according to claim 18 or 19, characterized in that: The processor is further configured to perform the following operations: Based on the node identifier of the second network node, subscription information of UE capability information is sent to the second network node.

23. A second network node, characterized in that: Including memory, transceiver, processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: Receiving the UE capability information sent by the first network node to obtain the requested UE capability information; sending UE capability information of the UE to the first network node; The second network node stores UE capability information of the UE.

24. The second network node according to claim 23, characterized in that: The processor is further configured to perform the following operations: receiving updated UE capability information of the UE sent by the first network node; Based on the updated UE capability information, the UE capability information of the UE is updated.

25. The second network node according to claim 23, characterized in that: The processor is further configured to perform the following operations: receiving a capability update request sent by the UE, wherein the capability update request carries an identifier of the UE and updated UE capability information; The UE capability information of the UE is updated based on the identifier of the UE.

26. The second network node according to claim 23, characterized in that The processor is further configured to perform the following operations: receiving a capability deletion message sent by the first network node; Based on the capability deletion message, UE capability information of the UE is deleted.

27. A user equipment UE, characterized in that: Including memory, transceiver, processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: Sending a registration request to the first network node, where the registration request carries a node identifier of the second network node, and the second network node stores UE capability information of the UE; The registration request is used by the first network node to obtain UE capability information of the UE from the second network node.

28. A device for acquiring capability information of a user equipment UE, characterized in that: Applied to a first network node, the device includes: A first receiving unit, configured to receive a registration request sent by a UE, where the registration request carries a node identifier of a second network node, and the second network node stores UE capability information of the UE; A first sending unit, configured to send a UE capability information acquisition request to the second network node based on the node identifier of the second network node; The second receiving unit is configured to receive the UE capability information of the UE sent by the second network node.

29. A device for acquiring capability information of a user equipment UE, characterized in that: Applied to a second network node, the device comprises: A first receiving unit, configured to receive a UE capability information acquisition request sent by a first network node; A first sending unit, configured to send UE capability information of the UE to the first network node; The second network node stores UE capability information of the UE.

30. A device for acquiring capability information of a user equipment UE, characterized in that: Applied to UE, the device includes: A first sending unit, configured to send a registration request to a first network node, wherein the registration request carries a node identifier of a second network node, and the second network node stores UE capability information of the UE; The registration request is used by the first network node to obtain UE capability information of the UE from the second network node.

31. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the method for obtaining the capability information of the user equipment UE according to any one of claims 1 to 5; or execute the method for obtaining the capability information of the user equipment UE according to any one of claims 6 to 12; Alternatively, execute the method for acquiring user equipment UE capability information as described in any one of claims 13 to 17.

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