Coordinator AP Multi-AP Channel Access Signaling
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Solution Overview
Problem
Existing wireless communication networks face challenges in efficiently coordinating multiple Access Points (APs) in Extremely High Throughput (EHT) systems, particularly in managing latency and interference across shared channels.
Innovation Solution
A communication method where a coordinator AP signals to other coordinated APs that it has gained access to a communication channel, and then allocates resource chunks based on the resource needs provided by the coordinated APs, or allocates resources without prior need information, to optimize resource utilization and minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple APs transmit simultaneously on shared channels, then network throughput increases, but interference between APs increases
Solution Approach 1:
The patent segments the communication channel into distinct time slots and frequency resources, allocating specific portions to different APs. This segmentation allows multiple APs to transmit simultaneously without interference by ensuring they use different segmented resources, thus resolving the contradiction between increasing throughput and reducing interference.
Solution Approach 2:
The patent implements dynamic resource allocation where the coordinator AP adjusts time slot assignments and frequency allocations based on real-time network conditions, traffic demands, and interference levels. This dynamic adaptation enables the system to maximize throughput while continuously managing interference by reallocating resources as needed.
2Productivity
If coordinator AP allocates resources based on needs information from coordinated APs, then resource allocation efficiency improves, but communication latency increases
Solution Approach 1:
The patent implements preliminary resource allocation where the coordinator AP pre-allocates time slots and frequency resources to coordinated APs before actual data transmission begins. This preliminary action reduces communication latency by eliminating the need for real-time negotiation during data transmission, while still achieving efficient resource allocation through advance planning based on predicted traffic patterns.
Solution Approach 2:
The patent uses partial feedback mechanisms where coordinated APs provide needs information only for critical resources or when thresholds are exceeded, rather than continuously reporting all resource requirements. This partial action reduces the overhead and latency associated with information exchange while maintaining sufficient allocation efficiency.
3Measurement precision
If coordinator AP signals all coordinated APs about channel access, then coordination accuracy improves, but signaling overhead increases
Solution Approach 1:
The patent implements selective signaling where the coordinator AP sends channel access notifications only to coordinated APs that are actually using or need to access the channel, rather than broadcasting to all coordinated APs. This local quality approach maintains coordination accuracy for relevant APs while reducing unnecessary signaling overhead to APs that don't need the information.
Solution Approach 2:
The patent uses partial signaling by omitting redundant information in coordination messages. The coordinator AP transmits only the essential channel access information needed by coordinated APs, excluding unnecessary details that would increase overhead without improving coordination accuracy.
Data Source
AI summary
Aspects of the present disclosure generally relate to a wireless communication method in a wireless network comprising a plurality of access points (APs) sharing a communication channel, each AP is configured to manage stations of a basic service set (BSS), the method comprising at a coordinator AP: signaling to another AP, referred to as coordinated AP, that the coordinator AP has gained access to the communication channel; and sending to the coordinated AP a resource allocation allocating a chunk of the communication channel for stations managed by the coordinated AP.