Wireless Traffic Filter Service Signaling Optimization
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Solution Overview
Problem
The existing Traffic Filter Service (TFS) procedure in WLANs faces inefficiencies due to the need for frequent signaling notifications when frames matched with traffic filters are received, leading to excessive messaging and resource usage, especially when multiple frames are continuously received.
Innovation Solution
A TFS procedure that allows a non-AP station to efficiently set filtering conditions by transmitting multiple TFS request elements in a single request frame, reducing the need for repeated transmissions and enabling the AP to notify the station about matched frames only at specified intervals, thereby optimizing radio resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the AP transmits notification frames to the non-AP STA every time a matched frame is received, then the non-AP STA can be promptly informed of received frames, but excessive signaling occurs leading to increased radio resource usage
Solution Approach 1:
The patent implements periodic notification action by introducing a notification interval parameter that controls how frequently the AP sends notification frames to the non-AP STA about received matched frames. Instead of notifying every time a frame is received, the system now uses periodic notifications at specified intervals, reducing signaling overhead while maintaining acceptable notification timeliness. This directly addresses the contradiction by transforming continuous notification into periodic notification.
2Ease of operation
If the non-AP STA transmits multiple TFS request elements in separate request frames, then each filtering condition can be set individually, but repeated transmissions increase signaling overhead and reduce efficiency
Solution Approach 1:
The patent applies merging by allowing multiple TFS request elements to be combined into a single request frame. The non-AP STA can now include multiple filtering condition requests in one transmission to the AP, rather than sending separate request frames for each condition. This significantly reduces signaling overhead and improves configuration efficiency while maintaining the ability to set individual filtering conditions, directly resolving the contradiction between ease of operation and productivity.
Data Source
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AI summary
There is provided a procedure for wireless network management and a station supporting the procedure. In the procedure, non-AP station which wants to us a traffic filter service (TFS) transmits a TFS request message including one or more TFS request elements for defining information about the requesting traffic filters to an access point (AP). And, the non-AP station receives, from the AP in response to the first TFS request message, a TFS response message including one or more TFS response elements for defining information about the status of the requesting traffic filters.