WLAN Interworking Configuration Retention During Handover
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Solution Overview
Problem
In wireless communication systems, terminals face inefficiencies during handover operations in WLAN interworking, particularly when they need to release and re-establish connections, leading to unnecessary operations and potential network overload.
Innovation Solution
A method and apparatus for performing handover in a wireless communication system that allows terminals to maintain or release WLAN interworking configurations based on received commands, enabling them to maintain connections during handover and report status, thereby avoiding unnecessary reconfiguration and improving network efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal releases the WLAN interworking configuration during handover, then the terminal can establish connection with the new eNB, but the terminal has to newly attempt connection with WLAN which causes unnecessary operations and increases processing overhead
Solution Approach 1:
The patent applies preliminary action by having the terminal retain the WLAN interworking configuration information before handover occurs. The configuration is preserved in advance so that when handover completes, the terminal can immediately reuse the existing WLAN connection without performing additional connection attempts, thus eliminating unnecessary operations while maintaining fast handover execution
2Device complexity
If the terminal maintains the WLAN interworking configuration during handover, then unnecessary connection operations are avoided, but the terminal must report access state information to the network which increases signaling overhead
Solution Approach 1:
The patent implements feedback by requiring the terminal to report its WLAN access state information to the network after handover. This feedback mechanism allows the network to understand whether the terminal successfully maintained the WLAN connection, enabling the network to make informed decisions about traffic steering and resource allocation, thus justifying the signaling overhead through improved network control
3Ease of operation
If the terminal releases WLAN connection during handover, then the handover procedure is simplified, but network offloading efficiency is reduced due to loss of WLAN traffic steering capability
Solution Approach 1:
The patent applies preliminary action by preserving the WLAN interworking configuration before handover, ensuring that the terminal maintains WLAN connectivity capability. This allows the network to continue steering traffic through WLAN after handover, maintaining offloading efficiency while the handover procedure itself remains relatively simple from the terminal's perspective
Data Source
AI summary
Provides are a method for performing, by a terminal in a WLAN interworking operation, handover in a wireless communication system and an apparatus supporting the same. The terminal may be instructed to perform handover from a source cell to a target cell, but may receive a handover command including a WLAN interworking configuration indication to indicate that the terminal maintains or releases a WLAN interworking configuration for a WLAN being accessed by the terminal. The terminal may attempt to perform the handover to the target cell in the state in which the terminal has maintained the WLAN interworking configuration if the WLAN interworking configuration indication indicates that the terminal maintains the WLAN interworking configuration.