# US 12,598,656 B2 · Method for edge computing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,598,656 B2 - Document ID: US12598656B2 - Status: Granted - Kind: B2 - Application number: 18/713,981 - Filed: 2022-02-18 - Published: 2025-02-06 - Granted: 2026-04-07 - Earliest claimed: 2022-02-18 - Assignees: Zte Corporation - Applicants: Zte Corporation - Inventors: Jinguo Zhu; Lijuan Chen; Qiang Huang; Qiang Zhang - Web page: https://patentgrep.com/patent/US12598656B2 ## CPC - H04W 76/12: Setup of transport tunnels - H04L 67/141: Setup of application sessions (admission control or resource allocation in data switching networks H04L47/70) - H04L 67/55: Push-based network services - H04W 28/0215: {based on user or device properties, e.g. MTC-capable devices (services for machine-to-machine communication [M2M] or machine type communication [MTC] H04W4/70; wireless resource selection or allocation plan definition based on terminal or device properties H04W72/51)} - H04W 28/0226: {based on location or mobility (handoff or reselection H04W36/00; mobile application services making use of the location of users or terminals H04W4/02)} - H04W 76/32: Release of transport tunnels - H04W 88/14: Backbone network devices - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Method, device and computer program product for wireless communication are provided. A method includes: transmitting, by an application function to a first application server, a tunnel ready notification to allow the first application server to transfer an application layer traffic to a second application server via a tunnel between a first local user plane function for the first application server and a second local user plane function for the second application server. ## Claims ### Claim 1 A wireless communication method, applied to an application function in a wireless communication system, wherein the system further comprises a session management function, a first local user plane function, a second local user plane function, a first application server, a second application server, and a user equipment, wherein the method comprises: receiving, by the application function from the session management function, a message indicating that a tunnel between the first local user plane function for the first application server and the second local user plane function for the second application server is established; and transmitting, by the application function to the first application server, a tunnel ready notification to allow the first application server to transfer an application layer traffic to the second application server via the tunnel; wherein the first local user plane function is connected to the first application server via a first N6 interface, and the second local user plane function is connected to the second application server via a second N6 interface; wherein the application function is configured to transmit a tunnel creation request to the session management function to create the tunnel, wherein the tunnel refers to an Nx tunnel established by the session management function through an N4 session modification procedure towards the first local user plane function and the second local user plane function; wherein the tunnel creation request comprises a traffic description that is used by the first local user plane function for detecting the application layer traffic; and wherein the first application server and the second application server are edge application servers and provide local service to the user equipment. ### Claim 2 (depends on 1) The wireless communication method of claim 1, wherein the application layer traffic comprises an application context of the first application server. ### Claim 3 (depends on 1) The wireless communication method of claim 1, wherein the application function is configured to transmit relocation information to the session management function indicating that the first application server is relocated to the second application server. ### Claim 4 (depends on 1) The wireless communication method of claim 1, wherein the tunnel create request further comprises at least one of: a traffic description, used by the first local user plane function for detecting the application layer traffic; traffic routing information, used by the second local user plane function for routing the application layer traffic to the second application server; or target Data Network Access Information (DNAI) used by the session management function for selecting the second application server for establishing the tunnel. ### Claim 5 (depends on 1) The wireless communication method of claim 1, wherein the application function is configured to transmit a tunnel delete request to the session management function to release the tunnel. ### Claim 6 A wireless communication server, comprising: a communication unit; and a processor configured to: receive, from a session management function, a message indicating that a tunnel between a first local user plane function for a first application server and a second local user plane function for a second application server is established; and transmit, to the first application server, a tunnel ready notification to allow the first application server to transfer an application layer traffic to the second application server via the tunnel; wherein the first local user plane function is connected to the first application server via a first N6 interface, and the second local user plane function is connected to the second application server via a second N6 interface; wherein the processor is configured to transmit a tunnel creation request to the session management function to create the tunnel, wherein the tunnel refers to an Nx tunnel established by the session management function through an N4 session modification procedure towards the first local user plane function and the second local user plane function; wherein the tunnel creation request comprises a traffic description that is used by the first local user plane function for detecting the application layer traffic; and wherein the first application server and the second application server are edge application servers and provide local service to a user equipment. ### Claim 7 (depends on 6) The wireless communication server of claim 6, wherein the application layer traffic comprises an application context of the first application server. ### Claim 8 (depends on 6) The wireless communication server of claim 6, wherein the processor is configured to transmit relocation information to the session management function indicating that the first application server is relocated to the second application server. ### Claim 9 (depends on 6) The wireless communication server of claim 6, wherein the tunnel create request further comprises at least one of: traffic routing information, used by the second local user plane function for routing the application layer traffic to the second application server; or target Data Network Access Information (DNAI) used by the session management function for selecting the second application server for establishing the tunnel. ### Claim 10 (depends on 6) The wireless communication server of claim 6, wherein the processor is configured to transmit a tunnel delete request to the session management function to release the tunnel. ### Claim 11 A non-transitory computer-readable storage medium, which is configured to store a computer program, wherein the computer program, when executed by a processor, causes the processor to perform a wireless communication method, where the method comprises: controlling an application function to receive a message from a session management function, the message indicating that a tunnel between a first local user plane function for a first application server and a second local user plane function for a second application server is established; and controlling the application function to transmit a tunnel ready notification to the first application server, to allow the first application server to transfer an application layer traffic to the second application server via the tunnel; wherein the first local user plane function is connected to the first application server via a first N6 interface, and the second local user plane function is connected to the second application server via a second N6 interface; wherein the application function is configured to transmit a tunnel creation request to the session management function to create the tunnel, wherein the tunnel refers to an Nx tunnel established by the session management function through an N4 session modification procedure towards the first local user plane function and the second local user plane function; wherein the tunnel creation request comprises a traffic description that is used by the first local user plane function for detecting the application layer traffic; and wherein the first application server and the second application server are edge application servers and provide local service to a user equipment. ### Claim 12 (depends on 11) The storage medium of claim 11, wherein the application layer traffic comprises an application context of the first application server. ### Claim 13 (depends on 11) The storage medium of claim 11, wherein the application function is configured to transmit relocation information to the session management function indicating that the first application server is relocated to the second application server. ### Claim 14 (depends on 11) The storage medium of claim 11, wherein the tunnel create request further comprises at least one of: traffic routing information, used by the second local user plane function for routing the application layer traffic to the second application server; or target Data Network Access Information (DNAI) used by the session management function for selecting the second application server for establishing the tunnel. ### Claim 15 (depends on 11) The storage medium of claim 11, wherein the application function is configured to transmit a tunnel delete request to the session management function to release the tunnel.