Multi-AP Spatial Mapping Coordination for Wireless Latency
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Solution Overview
Problem
Existing wireless communication systems face challenges in ensuring reliable and low-latency communication between multiple access points and stations, especially when sharing a common channel.
Innovation Solution
A joint sounding procedure is initiated to allow multiple access points sharing a common channel to communicate with one or more stations, involving the sharing and updating of spatial mapping information using orthonormal matrices for each access point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple access points share a common channel for communication with stations, then communication capacity and coverage are improved, but communication reliability and latency increase due to coordination complexity
Solution Approach 1:
The patent implements feedback mechanisms where access points exchange spatial mapping information and channel state information with each other and with stations. This feedback loop enables dynamic adjustment of transmission parameters, precoding matrices, and spatial mappings to maintain reliable communication despite the complexity of multi-AP coordination on shared channels.
Solution Approach 2:
The patent dynamically changes transmission parameters including spatial mapping matrices, precoding coefficients, and channel state information based on real-time channel conditions. By adapting these parameters through coordinated feedback, the system maintains communication reliability while utilizing multiple access points to enhance capacity.
2Productivity
If multiple access points share a common channel for communication with stations, then communication capacity and coverage are improved, but latency increases due to coordination overhead
Solution Approach 1:
The patent performs preliminary channel sounding and spatial mapping establishment before actual data transmission. By pre-determining optimal spatial mappings and precoding matrices through joint sounding procedures, the system reduces coordination overhead during active transmission, thereby lowering latency while maintaining enhanced capacity through multi-AP operation.
3Reliability
If spatial mapping information is shared between multiple access points, then communication reliability is improved, but system complexity increases
Solution Approach 1:
The patent segments the complex spatial mapping coordination into distinct functional components: channel sounding procedures, spatial mapping information generation, information sharing protocols, and transmission coordination. This segmentation allows each component to be optimized independently while maintaining overall system reliability without overwhelming complexity.
4Measurement precision
If joint sounding procedures are implemented for multi-AP communication, then channel state information accuracy is improved, but procedure complexity and time consumption increase
Solution Approach 1:
The patent merges the sounding procedures of multiple access points into a coordinated joint sounding process. By combining channel measurements from multiple APs simultaneously and processing the aggregated spatial mapping information centrally or through distributed algorithms, the system achieves accurate channel state information while managing procedure complexity through unified coordination protocols.
Data Source
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AI summary
Multiple access points may communicate with one or more computing devices. Spatial mapping information may be shared to facilitate multiple access point communication in a network. The spatial mapping information may be updated and used, for example, for the multiple access points communicating with one or more computing devices