WLAN Context Transfer Feedback for Low-Delay Roaming
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transferring context information during handovers in WLANs, leading to disruptions and delays, especially in next-generation networks with non-collocated access points, which affect user experience and network performance.
Innovation Solution
Implementing feedback procedures for context transfer in WLANs, including mechanisms for providing feedback prior to, during, and after roaming, to facilitate seamless handovers and reduce setup delays by ensuring appropriate parameter configurations at target access points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If context information is transferred during handover in WLANs, then handover reliability is improved, but handover delay increases due to the time required to transfer and process context information
Solution Approach 1:
The patent applies preliminary action by transferring context information from the source AP to the target AP before the actual handover occurs. This allows the target AP to be pre-configured with necessary context parameters, so that when handover happens, the STA can quickly establish connection without waiting for context transfer, thus improving reliability while minimizing delay.
2Manufacturing precision
If feedback procedures are implemented for context transfer, then parameter configuration accuracy at target AP is improved, but communication overhead increases
Solution Approach 1:
The patent implements feedback procedures where the target AP sends context transfer feedback information to the source AP, indicating which parameters were successfully received and which need further configuration. This feedback mechanism ensures accurate parameter configuration at the target AP while optimizing communication overhead by only transmitting necessary feedback data rather than complete context information.
Data Source
AI summary
Methods and apparatuses for feedback procedures for context transfer in WLANs. A method of wireless communication performed by a station (STA) includes determining to roam from a first access point (AP) to a second AP. The method further includes receiving, from the second AP, context transfer feedback information associated with a context that has been set up with the first AP, the context transfer feedback information indicating information about parameters associated with the context