Coordinated Multi-Access-Point Transmission for WLAN Interference Control
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Solution Overview
Problem
Existing spatial reuse technologies in wireless local area networks (WLANs) employ spontaneous and uncoordinated transmission methods, leading to uncontrollable interference and reduced throughput in high-dense deployment scenarios.
Innovation Solution
A coordinated multi-access-point transmission method where a first access point sends transmission control information to a second access point to coordinate and plan the spatial reuse transmission direction in advance, thereby controlling the link transmission direction of concurrent transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If spontaneous and uncoordinated spatial reuse transmission is used, then transmission flexibility is improved, but interference control deteriorates
Solution Approach 1:
The patent implements preliminary coordination between access points by exchanging transmission control information before actual data transmission. This allows the network to pre-plan spatial reuse transmission directions and time ranges, ensuring that concurrent transmissions are coordinated in advance to avoid interference while maintaining transmission flexibility.
2Object-affected harmful factors
If coordinated multi-access-point transmission is implemented, then interference control is improved, but system complexity increases
Solution Approach 1:
The patent segments the coordination process into distinct functional modules: transmission control information exchange between access points, spatial reuse transmission direction determination, and time range coordination. This modular segmentation manages system complexity by breaking down the coordinated transmission mechanism into manageable, independent components that can be implemented and controlled separately.
3Productivity
If concurrent transmission opportunities are increased, then throughput is improved, but interference control becomes more difficult
Solution Approach 1:
The patent implements a feedback mechanism where access points exchange transmission control information that includes spatial reuse transmission directions and time ranges. This feedback loop allows the network to monitor and adjust concurrent transmission opportunities dynamically, ensuring that throughput is maximized while interference is controlled through coordinated decision-making based on real-time network conditions.
Data Source
AI summary
A coordinated multi-access-point transmission method, where a first access point (AP) sends, to a second AP, transmission control information that carries link transmission direction information, and the first AP and the second AP pre-coordinate a transmission direction of a first link and a transmission direction of a second link, where concurrent transmission is performed on the first link and the second link. Further, the first AP completes data transmission on the first link based on the transmission control information, and the second AP completes data transmission on the second link based on the transmission control information.