Wi‑Fi EHT Channel Width Signaling for 320 MHz Operation
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Solution Overview
Problem
Existing wireless communication standards lack a method to represent operation information for frequency bandwidths exceeding 240 MHz, particularly in the higher frequency side of 80 MHz.
Innovation Solution
A communication apparatus is configured to communicate operation information using a frame structure compliant with IEEE802.11 series standards, specifically including frequency bandwidth information in the Channel Width field of the EHT Operation field, with values indicating 160 MHz and 320 MHz bandwidths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless communication uses frequency bandwidth of 240 MHz or more, then throughput and frequency use efficiency are improved, but existing standards cannot represent operation information for the higher frequency side (80 MHz in the latter half)
Solution Approach 1:
The frequency bandwidth information is segmented into multiple 80 MHz segments, where the first value represents the lower 80 MHz segment and the second value represents the higher 80 MHz segment. This segmentation allows the system to represent and communicate operation information for bandwidths of 240 MHz or more by indicating which specific 80 MHz segments are being used, thereby resolving the limitation of existing standards that could not represent the higher frequency side.
2Productivity
If frequency bandwidth is extended to 320 MHz, then frequency use efficiency is improved, but no method exists to represent operation information concerning 80 MHz on the high frequency side
Solution Approach 1:
The patent introduces a new dimension to the frequency bandwidth representation by using a two-value indication system. The first value indicates the lower 80 MHz segment and the second value indicates the higher 80 MHz segment. This dimensional approach allows the system to represent operation information for 320 MHz bandwidth by combining information from both segments, thereby enabling communication of operation information for extended bandwidths that were previously impossible.
Data Source
AI summary
A communication apparatus, complying with a standard of an IEEE802.11 series, comprises: communication unit configured to communicate, with another communication apparatus, operation information concerning wireless communication, wherein the operation information includes frequency bandwidth information for wireless communication, the frequency bandwidth information is included in Channel Width field included in EHT Operation field of a frame complying with a standard of an IEEE802.11 series, and the frequency bandwidth is indicated using a value selected from a plurality of values including at least a first value and a second value, wherein the first value indicates 160 MHz, and the second value indicates 320 MHz