Serving Network Device Context Retrieval for Inactive UE Service Continuity
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Solution Overview
Problem
In communication systems, especially for 5G and 6G services, user equipment (UE) in an inactive state may face service disruptions when the network side device cannot retrieve context information, leading to adverse effects on service quality.
Innovation Solution
A method where the serving network side device receives a service request from a UE in an inactive state and, if it fails to retrieve context information, retrieves it from a core network device, allowing it to transmit a response message and maintain service continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the serving network side device retrieves context information from the core network device, then service continuity is maintained, but network signaling overhead and processing time increase
Solution Approach 1:
The patent applies preliminary action by having the UE proactively send its identity information to the serving network side device before the actual service request occurs. This pre-positioning of identity data enables the network side device to quickly identify the UE and retrieve context information from the core network device without delay when a service request is actually made, thus maintaining service continuity while minimizing retrieval time.
Solution Approach 2:
The patent uses the UE's identity information as an intermediary element that bridges the gap between the UE and the core network device. The identity information acts as a key that enables the serving network side device to efficiently query and retrieve the necessary context information from the core network device, reducing the complexity and time of the retrieval process while ensuring reliable service continuity.
2Productivity
If the serving network side device stores context information locally, then service processing speed increases, but device memory requirements and complexity increase
Solution Approach 1:
The patent applies the taking out principle by extracting only the essential identity information of the UE and keeping it at the serving network side device, while storing the complete context information in the core network device. This selective extraction allows the serving device to quickly identify UEs and retrieve necessary context information on-demand, maintaining fast service processing speed while avoiding the burden of storing complete context information locally, thus reducing device complexity.
Data Source
AI summary
The present disclosure provides a service request processing method and an associated device. The service request processing method includes: receiving a service request from a User Equipment (UE) in an inactive state; when the serving network side device fails to retrieve context information about the UE, retrieving the context information about the UE from a core network device; and transmitting a response message for the service request to the UE. The context information about the UE is retrieved from the core network device, so it is able to respond to the service request from the UE in the inactive state, thereby to prevent a service for the UE from being adversely affected.