Multi-AP Data Transmission with Timed EDCA Access Limits
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Solution Overview
Problem
In multi-AP systems, shared access points unfairly increase their access capabilities after occupying time-domain and/or frequency-domain resources, leading to unfairness for other access points or stations.
Innovation Solution
Adjusting channel access parameters of shared access points by enhancing distributed channel access parameters such as arbitration interframe space number, contention window exponents, and timer parameters for a certain period after data transmission, followed by reverting to original or default parameters upon expiration of a timer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If shared access points occupy time-domain and/or frequency-domain resources for data transmission, then overall throughput is improved and delay is reduced, but access capabilities of shared APs are additionally increased which is unfair for other APs or stations
Solution Approach 1:
The patent changes the EDCA parameters (arbitration interframe space number, contention window exponents, timer parameters) of shared access points dynamically. After shared APs complete data transmission using occupied resources, their EDCA parameters are adjusted to restrict autonomous access capabilities for a certain period, thereby improving fairness while maintaining the throughput benefits of resource sharing
2Loss of time
If shared access points complete data transmission using occupied resources, then delay is reduced and throughput is improved, but access capabilities are additionally increased causing unfairness
Solution Approach 1:
The patent implements dynamic parameter adjustment where shared APs' EDCA parameters are modified after completing transmissions. The arbitration interframe space number, contention window exponents, and timer parameters are changed to temporarily reduce autonomous access capabilities, ensuring fairness is restored after the performance benefits are achieved
3Ease of operation
If enhanced distributed channel access parameters are adjusted to restrict shared AP access capabilities, then data access fairness is improved, but system complexity increases
Solution Approach 1:
The patent employs a feedback mechanism where the system monitors when shared APs complete data transmission and automatically triggers parameter adjustments. This feedback-based approach manages the complexity by automating the parameter change process rather than requiring manual intervention, while still achieving improved fairness through restricted autonomous access capabilities
Data Source
AI summary
Provided are a data transmission method for multiple access points, a device, and a storage medium. The data transmission method for multiple access points includes: in response to a shared access point completing data transmission according to a time-domain resource and/or a frequency-domain resource allocated by a sharing access point, adjusting an enhanced distributed channel access parameter of the shared access point; during the active period of a timer, performing data transmission by the shared access point according to the adjusted enhanced distributed channel access parameter; and in response to the timer expiring, adjusting the enhanced distributed channel access parameter of the shared access point back to an original enhanced distributed channel access parameter or a default enhanced distributed channel access parameter to allow the shared access point to perform data transmission according to the original enhanced distributed channel access parameter or the default enhanced distributed channel access parameter.