WLAN AP Sounding Time Coordination for Higher Throughput
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Solution Overview
Problem
Existing coordination schemes for wireless local area networks (WLANs) involving multiple access points (APs) face challenges in managing channel variation and sounding execution time discrepancies due to errors, leading to inefficient system throughput.
Innovation Solution
A communication device and method that enable exchange of threshold information regarding sounding time between APs to determine whether to re-execute sounding and execute coordinated transmission, using threshold information such as Absolute and Relative Sounding Time Difference Thresholds to manage channel variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If each access point independently manages sounding execution time, then coordination flexibility is improved, but timing discrepancies and errors occur leading to reduced system throughput
Solution Approach 1:
Access points exchange sounding execution time information through feedback mechanisms. Each AP notifies others of its sounding completion status and execution time, enabling coordinated transmission decisions based on real-time timing information from multiple APs.
Solution Approach 2:
The system performs preliminary sounding procedures before coordinated transmission. By completing sounding in advance and sharing the execution time information, APs prepare necessary channel state information ahead of time, enabling efficient coordinated transmission without last-minute delays.
2Reliability
If sounding is re-executed frequently to manage channel variation, then communication quality is improved, but time consumption increases reducing system throughput
Solution Approach 1:
The system dynamically adjusts sounding execution based on channel variation conditions. When channel conditions are stable, sounding is performed less frequently; when variations are detected, sounding is re-executed. This dynamic adaptation balances communication quality with time efficiency.
Solution Approach 2:
The system changes the frequency and timing parameters of sounding execution based on channel conditions. By adjusting how often sounding is performed and when it is executed, the system optimizes between maintaining communication quality and minimizing time loss.
3Productivity
If coordinated transmission is executed without recent sounding information, then system throughput is improved, but communication quality deteriorates due to outdated channel state information
Solution Approach 1:
Access points use feedback information about sounding execution times to determine whether coordinated transmission should proceed. The feedback mechanism ensures that transmission decisions are based on current channel state information, preventing use of outdated data while maintaining efficient throughput.
Data Source
AI summary
The present technology relates to a communication device and a communication method that allow an improvement in system throughput.Provided is a communication device including a control unit configured to perform control to exchange, with a first another communication device by means of wireless communication, first information that is used when a plurality of communication devices executes coordinated transmission to share, with the first another communication device, threshold information regarding a sounding time on the basis of the first information. The present technology can be applied to communication devices that constitute a wireless LAN system, for example.