WO-2026092256-A1 - COMMUNICATION METHOD, COMMUNICATION SYSTEM AND RELATED APPARATUS

WO2026092256A1WO 2026092256 A1WO2026092256 A1WO 2026092256A1WO-2026092256-A1

Abstract

Disclosed in the present application are a communication method, a communication system and a related apparatus. The communication method comprises: a first mobility management node sending a first message to a subscription data management node; the first mobility management node receiving subscription data of a terminal device that is returned by the subscription data management node, the subscription data comprising capability indication information of the terminal device, wherein the capability indication information is used for indicating that the terminal device supports reception of a network identity (NI); and on the basis of the capability indication information, the first mobility management node making an NI issuance decision for the terminal device. In the embodiments of the present application, whether a terminal device supports reception of a customized NI can be determined on the basis of capability indication information fed back by a subscription data management node, so as to assist a mobility management node in deciding whether to issue an NI to the terminal device and which type of NI to issue, thereby avoiding problems such as incorrect NI display on the terminal device side caused by issuing to the terminal device an NI that is not supported by the terminal device.

Inventors

ZHONG, JIE
DING, Hui
ZHANG, Zhuoyang

Assignees

华为技术有限公司

Dates

Publication Date: 20260507
Application Date: 20251022
Priority Date: 20241031

Claims (20)

A communication method, characterized in that it is applied to a first mobility management node; the method includes: Send a first message to the contract data management node; the first message is used to request the contract data of the terminal device that initiated the network access request; The terminal device receives subscription data returned by the subscription data management node; the subscription data includes capability indication information of the terminal device, which indicates that the terminal device supports receiving network identifiers (NIs). The NI delivery decision of the terminal device is executed based on the capability indication information and the NI delivery strategy of the terminal device.
The method according to claim 1, characterized in that, the step of executing the NI delivery decision of the terminal device based on the capability indication information and the NI delivery strategy of the terminal device includes: If the capability indication information includes first indication information, and it is determined based on the NI distribution policy of the terminal device that a first customized NI needs to be distributed to the terminal device, the first customized NI is sent to the terminal device; the first indication information is used to indicate that the terminal device has a subscribed customized NI, or the first indication information is used to indicate that a customized NI can be distributed to the terminal device.
The method according to claim 2, characterized in that the method further comprises: If the NI delivery policy for the terminal device determines that it is not necessary to deliver a customized NI to the terminal device, the operator's default NI is sent to the terminal device.
The method according to claim 1, characterized in that, the step of executing the NI delivery decision of the terminal device based on the capability indication information and the NI delivery strategy of the terminal device includes: If the capability indication information includes the second indication information, and it is determined based on the NI distribution policy of the terminal device that a first NI needs to be distributed to the terminal device, the first NI is sent to the terminal device; the second indication information is used to indicate a second customized NI or the operator's default NI, the second customized NI or the default NI being a NI distributed to the terminal device by the second mobility management node before the terminal device initiates the network access request; the first NI is different from the second customized NI, or the first NI is different from the default NI; If the capability indication information includes the second indication information, and it is determined based on the NI distribution policy of the terminal device that there is no need to update the NI on the terminal device side, then no NI will be sent to the terminal device.
The method according to claim 4, wherein the second customized NI or the default NI is stored in the subscription data by the subscription data management node; and when sending the first NI to the terminal device, the method further includes: The first NI is sent to the contract data management node so that the contract data management node updates the second customized NI or the default NI stored in the contract data to the first NI.
The method according to claim 1, characterized in that, the step of executing the NI delivery decision of the terminal device based on the capability indication information and the NI delivery strategy of the terminal device includes: If the capability indication information includes third indication information, and it is determined based on the NI distribution policy of the terminal device that the default NI of the operator needs to be distributed to the terminal device, the default NI is sent to the terminal device; the third indication information is used to indicate that the second mobility management node distributed a customized NI to the terminal device before the terminal device initiated the network access request. If the capability indication information includes the third indication information, and it is determined based on the NI distribution policy of the terminal device that a third customized NI needs to be distributed to the terminal device, the third customized NI is sent to the terminal device; the third customized NI is different from the customized NI distributed by the second mobility management node to the terminal device.
According to the method of claim 6, the third indication information is stored in the contract data by the contract data management node; When sending the default NI to the terminal device, the method further includes: A fourth indication message is sent to the subscription data management node so that the subscription data management node updates the third indication message stored in the subscription data to the fourth indication message; the fourth indication message is used to indicate that the first mobility management node has not issued a customized NI to the terminal device.
The method according to claim 1, characterized in that, the step of executing the NI delivery decision of the terminal device based on the capability indication information and the NI delivery strategy of the terminal device includes: If the capability indication information includes the sixth indication information, and the NI distribution policy of the terminal device determines that the operator's default NI needs to be distributed to the terminal device, then the NI is not sent to the terminal device; the sixth indication information is used to indicate that the second mobility management node did not distribute the customized NI to the terminal device before the terminal device initiates the network access request. If the capability indication information includes the sixth indication information, and it is determined based on the NI distribution policy of the terminal device that a fourth customized NI needs to be distributed to the terminal device, then the fourth customized NI is sent to the terminal device.
According to the method of claim 8, the sixth indication information is stored in the contract data by the contract data management node; When sending the fourth customized NI to the terminal device, the method further includes: A fifth instruction message is sent to the subscription data management node so that the subscription data management node updates the sixth instruction message stored in the subscription data to the fifth instruction message; the fifth instruction message is used to instruct the first mobility management node to issue a customized NI to the terminal device.
The method according to any one of claims 1-9, wherein the first message includes a device identifier of the terminal device, the device identifier being used by the subscription data management node to determine whether the terminal device supports receiving customized NI, and, if the terminal device does not support receiving customized NI, to modify the subscription data of the terminal device to avoid sending customized NI to the terminal device.
The method according to any one of claims 1-9, characterized in that the method further comprises: Receive the network access request from the terminal device; the network access request includes the device identifier of the terminal device; The method further includes: A second message is sent to the policy control function node; the second message includes the device identifier, which is used by the policy control function node to determine whether the terminal device supports receiving customized NI, and if the terminal device does not support receiving customized NI, to change the NI distribution policy of the terminal device in the first mobility management node.
The method according to claim 11, wherein the method further comprises, the policy change message issued by the NI of the terminal device is synchronized by the policy control function node to the subscription data management node, so that the subscription data management node changes the subscription data of the terminal device.
A communication method, characterized in that it is applied to a contract data management node; the method includes: Receive a first message from the first mobility management node; the first message is used to request the subscription data of the terminal device that initiated the network access request; The first mobility management node sends the subscription data of the terminal device to the first mobility management node. The subscription data includes the capability indication information of the terminal device, which indicates that the terminal device supports receiving network identifiers (NIs), so that the first mobility management node can execute the NI distribution decision of the terminal device based on the capability indication information and the NI distribution policy of the terminal device.
According to the method of claim 13, wherein the capability indication information includes first indication information, and the first mobility management node determines that a first customized NI needs to be issued to the terminal device based on the NI issuance policy of the terminal device, the first mobility management node sends the first customized NI to the terminal device; the first indication information is used to indicate that the terminal device has a subscribed customized NI, or the first indication information is used to indicate that a customized NI can be issued to the terminal device.
According to the method of claim 14, the first mobility management node determines that it is not necessary to send a customized NI to the terminal device based on the NI distribution policy of the terminal device, and then sends the operator's default NI to the terminal device.
According to the method of claim 13, wherein when the capability indication information includes second indication information, and the first mobility management node determines that a first NI needs to be issued to the terminal device based on the NI issuance policy of the terminal device, the first mobility management node sends the first NI to the terminal device; the second indication information is used to indicate a second customized NI or the operator's default NI, the second customized NI or the default NI being an NI issued by the second mobility management node to the terminal device before the terminal device initiates the network access request; the first NI is different from the second customized NI, or the first NI is different from the default NI; If the capability indication information includes the second indication information, and the first mobility management node determines that it does not need to update the NI on the terminal device side based on the NI distribution policy of the terminal device, the first mobility management node will not perform the operation of sending the NI to the terminal device.
The method according to claim 16, wherein the second customized NI or the default NI is stored in the subscription data by the subscription data management node; and when the first mobility management node sends the first NI to the terminal device, the method further includes: Receive the first NI from the first mobility management node; Update the second customized NI or the default NI stored in the contract data to the first NI.
According to the method of claim 13, wherein the capability indication information includes third indication information, and the first mobility management node determines that it needs to issue the operator's default NI to the terminal device based on the NI issuance policy of the terminal device, the first mobility management node sends the default NI to the terminal device; the third indication information is used to indicate that the second mobility management node issued a customized NI to the terminal device before the terminal device initiated the network access request. If the capability indication information includes the third indication information, and the first mobility management node determines that it needs to issue a third customized NI to the terminal device based on the NI issuance policy of the terminal device, the first mobility management node sends the third customized NI to the terminal device; the third customized NI is different from the customized NI issued by the second mobility management node to the terminal device.
The method according to claim 18, wherein the third indication information is stored in the subscription data by the subscription data management node; and when the first mobility management node sends the default NI to the terminal device, the method further includes: Receive fourth indication information from the first mobility management node; The third indication information stored in the contract data is updated to the fourth indication information; the fourth indication information is used to indicate that the first mobile management node has not issued a customized NI to the terminal device.
According to the method of claim 13, the first mobile management node does not perform the operation of sending an NI to the terminal device when the capability indication information includes a sixth indication information and the first mobile management node determines that it needs to send the operator's default NI to the terminal device based on the NI distribution policy of the terminal device; the sixth indication information is used to indicate that the second mobile management node has not sent a customized NI to the terminal device before the terminal device initiates the network access request. If the capability indication information includes the sixth indication information, and the first mobility management node determines that it needs to send the fourth customized NI to the terminal device, the first mobility management node sends the fourth customized NI to the terminal device.

Description

A communication method, communication system and related apparatus This application claims priority to Chinese Patent Application No. 202411555663.X, filed on October 31, 2024, entitled "A Communication Method, Communication System and Related Device", the entire contents of which are incorporated herein by reference. Technical Field This application relates to the field of communication technology, and in particular to a communication method, communication system and related apparatus. Background Technology Existing communication protocols define that core network elements can update network identity and time zone (NITZ) information to the user equipment (UE) through the UE's configuration update process. The network identity (NI) can be the full name or abbreviation of the operator's network identifier, and the time zone (TZ) can be the global time of the UE's current time zone. However, a large number of existing terminals do not fully comply with the protocol implementation. Due to the mobility of these terminals, when they move to a certain area, they may receive NI information sent by the network. NI information sent by the network without proper decision-making may cause the terminal to fail to accurately obtain the required network information, resulting in NI display errors and other problems. Summary of the Invention This application provides a communication method, communication system, and related apparatus that can determine whether a terminal device supports receiving NI based on capability indication information fed back by the subscription data management node. This assists the mobility management node in deciding whether to send an NI to the terminal device and what type of NI to send, thereby avoiding sending an unsupported NI to the terminal device, which could cause NI display errors or even prevent the terminal device from accessing the network. This is beneficial for improving the user experience. Firstly, embodiments of this application provide a communication method applied to a first mobility management node. Unless otherwise specified, the first mobility management node in this application can refer to the first mobility management node itself (e.g., a core network element) or a module within the first mobility management node. For example, the module can be a communication module within the first mobility management node, or a circuit or chip within the first mobility management node responsible for communication functions, such as a modem chip (also known as a baseband chip), or a system-on-a-chip (SoC) chip or system-in-package (SIP) chip containing a modem core. Alternatively, it can be a logic module or software capable of implementing all or part of the functions of the first mobility management node. For ease of description, the following uses a first mobility management node as an example. The method includes: The first mobility management node sends a first message to the subscription data management node; the first message is used to request the subscription data of the terminal device that initiated the network access request; the first mobility management node receives the subscription data of the terminal device returned by the subscription data management node; the subscription data includes the capability indication information of the terminal device, which is used to indicate that the terminal device supports receiving network identifier (NI); the first mobility management node executes the NI distribution decision of the terminal device based on the capability indication information. As can be seen from this embodiment, the subscription data management node can add capability indication information for the terminal device to indicate whether the terminal device supports receiving NIs. When the first mobility management node receives a network access request from the terminal device, it can request the subscription data management node to return the subscription data of the terminal device to obtain the capability indication information from the subscription data. The first mobility management node can refer to the capability indication information to decide whether to send an NI to the terminal device and what type of NI to send. This not only allows for timely updates to the NI displayed by the terminal device but also avoids sending an unsupported NI to the terminal device, which could lead to incorrect NI display. In one possible implementation, the first mobility management node executes the NI (National Information Provider) dissemination decision for the terminal device based on capability indication information, including: If the capability indication information includes the first indication information, and it is determined based on the NI distribution policy of the terminal device that the first customized NI needs to be distributed to the terminal device, the first customized NI is sent to the terminal device; the first indication information is used to