Wireless Access Point Dynamic Channel Switching for Scheduling Accuracy
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Solution Overview
Problem
Current wireless network access methods face inefficiencies due to inflexible resource utilization and scheduling inaccuracies, particularly in multi-user scenarios, leading to reduced network efficiency and resource waste.
Innovation Solution
A method and apparatus that allow an access point to dynamically change channel access approaches for stations based on control information, enabling flexible updates to buffer status and resource allocation, thereby improving resource utilization and MAC layer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the access point uses scheduling access mechanism to allocate resources for station transmission, then the network efficiency is improved through coordinated multi-user transmission, but the scheduling accuracy deteriorates when station buffer status changes are not updated in real-time
Solution Approach 1:
The patent implements a feedback mechanism where the station sends buffer status reports to the access point, and the access point sends trigger frames with scheduling information back to the station. This continuous feedback loop enables real-time updates of buffer status and scheduling decisions, resolving the contradiction between maintaining high network efficiency through coordinated transmission and achieving accurate scheduling when buffer status changes.
2Measurement precision
If the station reports buffer status in real-time to the access point, then the scheduling accuracy is improved, but the network load increases significantly
Solution Approach 1:
Instead of requiring continuous real-time buffer status reporting, the patent adopts a partial action approach where the station reports buffer status at specific trigger points (when buffer becomes non-empty or after scheduled transmission). The access point uses trigger frames to initiate transmissions only when necessary, reducing the frequency of status reports while maintaining adequate scheduling accuracy.
3Ease of operation
If the access point uses EDCA mechanism for station data transmission, then the ease of operation is improved through distributed access, but the resource utilization rate deteriorates due to inability to update buffer status accurately
Solution Approach 1:
The patent combines the static EDCA mechanism with dynamic scheduling elements. The access point can switch between EDCA mode (for simple distributed access) and trigger frame-based scheduling mode (for coordinated multi-user transmission). This dynamic adaptability allows the system to optimize resource utilization by using scheduled transmissions when multiple stations have data to send, while maintaining EDCA's ease of operation for single-user scenarios.
Data Source
AI summary
Provided are a wireless network access method and apparatus. The method includes: in a wireless network supporting a plurality of channel access approaches, using an access point to maintain a status of a traffic-stream-based or station-based traffic connection with a station; and using the access point to negotiate with the station or transmit control information to the station and to change a channel access approach used by the traffic-stream-based or station-based traffic connection.