WO-2026092257-A1 - COMMUNICATION METHOD AND COMMUNICATION APPARATUS

WO2026092257A1WO 2026092257 A1WO2026092257 A1WO 2026092257A1WO-2026092257-A1

Abstract

Provided in the present application are a communication method and a communication apparatus. The method comprises: sending a first session establishment request, wherein the first session establishment request carries first indication information, the first indication information indicating the establishment of a first type of session, and the first type of session being transmitted by means of a user plane for non-3GPP access; and establishing a connection with a user plane network element on the basis of address information of the user plane network element, wherein the user plane network element supports the transmission of the first type of session, the address information of the user plane network element is sent on the basis of the first indication information, and the connection is used for the transmission of the first type of session. By means of requesting that a network side establishes a first type of session, which is transmitted by means of a user plane for non-3GPP access, establishing a connection with a user plane network element on the basis of address information of the user plane network element, and transmitting the first type of session by means of the user plane for non-3GPP access, the flexibility of a session management method for non-3GPP access can be improved, thereby reducing signaling overheads.

Inventors

LIU, JIAYI
XU, Yishan
LI, Haoran

Assignees

华为技术有限公司

Dates

Publication Date: 20260507
Application Date: 20251022
Priority Date: 20241028

Claims (20)

A communication method, characterized in that it is applied to a terminal device, the method comprising: Send a first session establishment request, the first session establishment request carrying first indication information, the first indication information indicating the establishment of a first type of session, the first type of session being transmitted by a user plane that is not accessed by the third generation partner program; A connection is established between the user plane network element and the user plane network element based on the address information of the user plane network element. The user plane network element supports the transmission of the first type of session. The address information of the user plane network element is determined based on the first indication information. The connection is used to transmit the first type of session.
The method according to claim 1, characterized in that the method further comprises: Receive a second instruction message, which indicates that, if the non-3rd Generation Partner Program access is available, a connection shall be established between the user plane and the user plane network element through the non-3rd Generation Partner Program access; Establishing a connection with the user plane network element includes: If it is determined that the non-3rd Generation Partner Program access is available, a connection is established between the user plane accessed through the non-3rd Generation Partner Program and the user plane network element.
The method according to claim 2, wherein the second indication information further indicates that, in the event that the non-3rd Generation Partner Program access is unavailable, the session is transmitted via the user plane of the 3rd Generation Partner Program access.
The method according to any one of claims 1 to 3, characterized in that the method further comprises: Receive user routing policy URSP, wherein the access type indicated by the URSP includes a first access type, wherein the first access type is non-third generation partner program access registered in the third generation partner program; Sending the first session establishment request message includes: The first session establishment request message is sent according to the URSP.
The method according to any one of claims 1 to 4, characterized in that, before establishing the connection between the address information based on the user plane network element and the user plane network element, the method further includes: Receive the address information of the user plane network element.
The method according to any one of claims 1 to 4, characterized in that the method further comprises: Obtain the address information of the access device, wherein the access device stores the mapping relationship between the address information of the user plane network element and the identification information of the terminal device.
According to the method of claim 6, the first session establishment request includes the address information of the access device, and the establishment of a connection between the address information of the user plane network element and the user plane network element includes: Based on the connection established between the access device and the user plane network element, the access device is used to receive the address information of the user plane network element.
A communication method, characterized in that it includes: Receive a session creation request, the session creation request carrying first indication information, the first indication information indicating the establishment of a first type of session, the first type of session being transmitted by a user plane that is not accessed by the third generation partner program; According to the first instruction information, the address information of the user plane network element is sent. The address information of the user plane network element is used to establish a connection with the user plane. The connection is used to transmit the first type of session. The user plane network element supports the transmission of the first type of session.
The method according to claim 8, characterized in that the method further comprises: Send a second instruction message, which indicates that a connection should be established with the user plane network element if the non-3rd generation partner program access is available.
The method according to claim 8, wherein the second indication information further indicates that, in the event that the non-3rd Generation Partner Program access is unavailable, the session is transmitted via the user plane of the 3rd Generation Partner Program access.
The method according to any one of claims 8 to 10, characterized in that the method further comprises: A second session establishment request is sent to the user plane network element according to the first indication information. The second session establishment request carries third indication information, which indicates the allocation of address information for the user plane network element. Receive the address information of the user plane network element.
According to the method of claim 11, the second session establishment request further carries fourth indication information, the fourth indication information indicating zeroing of first information, the first information being used to allocate resources for third-generation partner program access, and the method further includes: Receive a second session establishment response, which carries the first information set to zero.
The method according to any one of claims 8 to 12, characterized in that the session creation request further includes address information of the access device to which the terminal device is connected, and the method further includes: The address information of the access device is sent to the user plane network element. The address information of the access device is used to establish a connection between the user plane network element and the terminal device. The access device stores the mapping relationship between the address information of the user plane network element and the identification information of the terminal device.
A communication method, characterized in that it is applied to a user plane network element, the method comprising: Receive a second session establishment request, which is sent in accordance with a session creation request, the session creation request indicating the establishment of a first type of session, the first type of session being transmitted by a user plane that is not accessed by the third generation partner program; The address information of the user plane network element is sent according to the second session establishment request. The address information of the user plane network element is used to establish a connection with the terminal device. The connection is used to transmit the first type of session.
According to the method of claim 14, the second session establishment request carries third indication information, the third indication information indicating the address information for allocating the user plane network element, and the step of sending the address information of the user plane network element according to the second session establishment request includes: The address information of the user plane network element is sent according to the third instruction information.
The method according to claim 14 or 15, characterized in that the second session establishment request further carries fourth indication information, the fourth indication information indicating zeroing of first information, the first information being used to allocate resources for third-generation partner program access, the method further comprising: Send a second session establishment response, which carries the first information set to zero.
The method according to any one of claims 14 to 16, characterized in that the second session establishment request further includes address information of the access device to which the terminal device is connected, and the step of sending the address information of the user plane network element according to the second session establishment request includes: The address information of the user plane network element is sent to the access device according to the address information of the access device. The access device stores the mapping relationship between the address information of the user plane network element and the identification information of the terminal device.
A communication device, characterized in that the device includes a unit or module for performing the method as described in any one of claims 1 to 17.
A communication device, characterized in that it comprises: A processor, the processor being configured to cause the apparatus to perform the method as described in any one of claims 1 to 17 by executing a computer program stored in a memory and/or by means of logic circuitry.
A computer-readable storage medium, characterized in that the computer-readable storage medium includes a computer program or instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1 to 17.

Description

Communication methods and communication devices This application claims priority to Chinese Patent Application No. 202411516997.6, filed on October 28, 2024, entitled "Communication Method and Communication Device", the entire contents of which are incorporated herein by reference. Technical Field This application relates to the field of communications, and more specifically, to a communication method and a communication device. Background Technology Existing standards define access traffic steering, switching, splitting (ATSSS) features. User equipment (UE) can access the core network and obtain services through both 3GPP and non-3GPP connections. When a UE accesses the network through two different access types, it can establish a multi-access protocol data unit (MAPDU) session to obtain services. Through multi-access sessions, the UE can dynamically select and switch access networks according to different network conditions and needs to obtain optimal network connectivity and performance. In existing solutions, the UE can transmit sessions with the user plane through multipath transmission connections, such as connections established through the Multipath Transmission Control Protocol (MPTCP) function and the Multipath Quick User Datagram Protocol Internet Connections (MPQUIC) function. However, existing solutions lack flexibility through multipath transmission connections. Summary of the Invention This application provides a communication method and a communication device that can improve the flexibility of session management methods for non-3GPP access and save signaling overhead. In a first aspect, a communication method is provided, which can be executed by a terminal device or by a component of the terminal device (such as a chip or circuit), and this application does not limit the scope of the method. The method includes: sending a first session establishment request, the first session establishment request carrying first indication information, the first indication information indicating the establishment of a first type of session, the first type of session being transmitted by a user plane that is not accessed by 3GPP; establishing a connection between the user plane network element and the user plane network element based on the address information of the user plane network element, the user plane network element supporting the transmission of the first type of session, the address information of the user plane network element being sent according to the first indication information, and the connection being used to transmit the first type of session. Based on the above scheme, the terminal device can request the network side to establish a first type of session. This first type of session is transmitted through the user plane of non-3GPP access, and the terminal device establishes a connection with the user plane network element based on the address information of the user plane network element. Transmitting the first type of session through the user plane of non-3GPP access can improve the flexibility of the session management method for non-3GPP access and save signaling overhead. In some implementations of the first aspect, a second indication is received, which indicates that, if non-3GPP access is available, a connection is established between the user plane and the user plane network element through the non-3GPP access; and if it is determined that non-3GPP access is available, a connection is established between the user plane and the user plane network element through the non-3GPP access. In some implementations of the first aspect, the second instruction information also indicates that the session is transmitted via the user plane of 3GPP access when non-3GPP access is unavailable. Based on the above scheme, when the N3GPP side is available, a connection is established between the user plane and the user plane network element through the non-3GPP access. At this time, the 3GPP side does not establish data plane transmission. The terminal device can establish data plane transmission between the non-3GPP side and the user plane network element through the address information of the user plane network element. That is, when the non-3GPP side is unavailable, the 3GPP side can be used as a backup. In some implementations of the first aspect, a user routing selection policy (URSP) is received, the URSP indicating an access type including a first access type, which is a non-3GPP access registered in 3GPP; and a first session establishment request message is sent according to the URSP. In some implementations of the first aspect, the address information of the user plane network element is received. For example, the terminal device receives the address information of the user plane network element from the user plane network element through a session management network element. In some implementations of the first aspect, the address information of the access device is obtained, and the acces