M-PCH Capability Signaling for Low-Latency OBSS Communication
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Solution Overview
Problem
In an Overlapping BSS (OBSS) environment, existing technologies struggle to effectively utilize multi-primary channels (M-PCH) for reliable low-latency (RLL) communication due to the lack of a mechanism for announcing capability information that designates these channels, making it difficult to occupy and ensure free channels for high throughput and low latency.
Innovation Solution
A communication apparatus and method that generates and transmits capability information about multi-primary channels (M-PCH) compliant with IEEE 802.11 standards, allowing devices to announce their support and availability of each primary channel, facilitating efficient channel access and configuration for RLL communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-primary channels (M-PCH) are used to utilize unused resources in OBSS environments, then channel access efficiency and throughput are improved, but the complexity of channel access control and coordination increases due to lack of capability announcement mechanism
Solution Approach 1:
The patent applies preliminary action by having communication apparatuses announce their M-PCH capability information in advance through beacon frames or probe response frames. This allows other apparatuses to know beforehand which channels are available and supported, enabling more efficient channel access decisions without increasing operational complexity during actual communication.
Solution Approach 2:
The patent implements feedback through the capability information exchange mechanism where apparatuses transmit their M-PCH support status and available channels to each other. This feedback loop enables dynamic adaptation to OBSS environments, allowing apparatuses to select appropriate channels based on announced capabilities while maintaining manageable control complexity.
2Adaptability or versatility
If capability information about M-PCH is announced to facilitate channel selection, then adaptability to OBSS environments is improved, but the overhead of communication frames increases
Solution Approach 1:
The patent applies local quality by including M-PCH capability information only where necessary - specifically in beacon frames and probe response frames - rather than transmitting it continuously or universally. This selective inclusion provides the needed adaptability to OBSS environments while minimizing the overall overhead of communication frames.
3Speed
If multiple primary channels are used to reduce latency in RLL communication, then communication speed is improved, but the difficulty of detecting and measuring available channels increases
Solution Approach 1:
The patent applies self-service by having each communication apparatus autonomously determine and announce its own M-PCH availability and support status. This eliminates the need for complex centralized detection and measurement systems, allowing apparatuses to independently manage channel selection while maintaining high communication speeds through multiple primary channels.
Data Source
AI summary
There is provided a communication apparatus comprising: one or more processors; and one or more memories storing instructions that, when executed by the one or more processors, cause the communication apparatus to: generate capability information about a method of a plurality of primary channels (M-PCH) compliant with the IEEE 802.11 series; and transmit a frame including the capability information to a communication partner apparatus, wherein the capability information includes at least one of information representing whether the plurality of communication apparatus supports the M-PCH method, and information representing availability of each of the primary channels.