UE Traffic Steering Failure Logging in 3GPP WLAN Systems
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Solution Overview
Problem
Traffic steering failures occur when user equipment (UE) attempts to transition between 3GPP and WLAN networks, leading to incomplete or failed connections due to authentication and authorization issues, causing service degradation and data transmission delays.
Innovation Solution
The UE determines and logs information on traffic steering failures, including causes such as authentication and authorization rejections, and transmits this information to the 3GPP network upon reconnection, allowing the network to provide revised assistance for successful traffic steering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE attempts to perform traffic steering to WLAN network, then network flexibility and service diversity are improved, but connection reliability deteriorates due to authentication and authorization failures
Solution Approach 1:
The UE performs authentication and authorization procedures with the WLAN network before actual traffic steering. This preliminary action ensures that the UE is pre-approved for network access, preventing connection failures during actual data transmission and improving connection reliability while maintaining network flexibility
2Reliability
If the UE logs and reports traffic steering failure information to 3GPP network, then service quality and network optimization are improved, but information processing complexity and signaling overhead increase
Solution Approach 1:
The patent extracts only the essential failure information elements (failure cause, target WLAN ID, time stamp) from the complex traffic steering failure scenario. By taking out only the critical data needed for network optimization, the solution improves service quality through accurate failure analysis while minimizing information processing complexity and signaling overhead at the UE
3Reliability
If the UE establishes connection with 3GPP network after failure, then network availability is improved, but service continuity deteriorates due to lack of failure handling information
Solution Approach 1:
The UE provides feedback about the traffic steering failure to the 3GPP network by logging and reporting failure information. This feedback mechanism enables the network to learn from previous failures and make informed decisions about future traffic steering attempts, improving service continuity while maintaining network availability through adaptive network control
Data Source
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AI summary
A method and apparatus for transmitting information in a wireless communication system is provided. A user equipment (UE) determines whether a failure of traffic steering, between a 3rd generation partnership project (3GPP) network and a wireless local area network (WLAN), has occurred. If it is determined that the failure of traffic steering has occurred, the UE logs information on the failure of traffic steering, and transmits the information on the failure of traffic steering to the 3GPP network when the connection with the 3GPP network is established.