5G Session Context Reuse for Low-Signaling Service Requests
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The frequent and repetitive service request procedures in 5G networks consume a significant portion of network resources and can be improved by reducing signaling during these procedures.
Innovation Solution
A method involving a session control device and an access control device that utilize specific information, such as tracking area identities and pre-stored context, to reduce signaling during user plane path activation procedures by reusing cached information, thereby omitting unnecessary messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the service request procedure is performed frequently to activate user plane paths, then network responsiveness is improved, but signaling overhead and network resource consumption increase
Solution Approach 1:
The access control device pre-stores context information including uplink tunnel information during initial PDU session establishment or previous service request procedures. When a service request is received, the device checks whether pre-stored context information can be reused to activate the user plane path, avoiding the need to perform complete signaling procedures with the session control device for each service request.
2Measurement precision
If complete signaling procedures are performed during each service request, then signaling accuracy is maintained, but processing time increases
Solution Approach 1:
The access control device creates and stores copies of context information (N2 PDU session resource setup request transfer IE including uplink tunnel information) from previous signaling procedures. During subsequent service requests, these copied context information are retrieved and validated against current service request parameters (such as TAI matching), allowing fast path activation without repeating complete signaling exchanges.
Data Source
AI summary
The present invention proposes a wat to implement a specific technique that can make a service request procedure of a UE efficient by reducing signaling occurring in the service request procedure, thereby making overall network performance more efficient in various aspects, such as reducing computing resource consumption for the service request procedure and shortening latency of a UE connection to a data network.