AP Handover Session Control for Continuous Aggregated Transmission
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Solution Overview
Problem
In wireless networks, when a station (STA) is handed over from one access point (AP) to another, the aggregated transmission session is interrupted, leading to service interruption or freezing, affecting communication quality.
Innovation Solution
A communication method where a first AP deletes an aggregated session based on indication information from an access controller (AC), allowing the STA to establish a new aggregated session with the second AP, thereby avoiding service interruption and improving communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If fast STA handover is implemented by allowing STA to access multiple APs in advance, then handover speed is improved, but aggregated transmission session is interrupted causing service interruption
Solution Approach 1:
The patent applies preliminary action by establishing a target aggregated session between the STA and the target AP before handover occurs. The target AP is pre-configured with aggregation parameters and the aggregated session is set up in advance, so that when handover happens, the STA can immediately use the pre-established session without interruption, thus maintaining both fast handover and continuous aggregated transmission
2Productivity
If aggregated transmission is performed between AP and STA, then air interface transmission efficiency is improved, but session establishment complexity increases
Solution Approach 1:
The patent introduces the AC (Access Controller) as an intermediary to manage aggregated sessions. The AC receives aggregation parameters from the target AP, generates the aggregated session configuration, and distributes it to both the STA and target AP. This intermediary approach simplifies the complexity by centralizing session management rather than requiring direct complex coordination between multiple APs and STAs
Data Source
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AI summary
Embodiments of this application disclose a communication method and a related apparatus. The method in embodiments of this application includes: A first access point AP receives first indication information from an access controller AC, where the first indication information indicates the first AP to delete a first aggregated session between the first AP and a first station STA. The first AP deletes the first aggregated session. The first AP sends second indication information to the AC, where the second indication information indicates that the first AP successfully deletes the first aggregated session. Therefore, the AC determines that the first aggregated session has been deleted, and the AC indicates to hand over the first STA to a second AP, so that after the first STA is handed over to the second AP, the first STA establishes an aggregated session with the second AP, and performs aggregated transmission, thereby avoiding service interruption or freezing of the first STA, and improving communication quality.