Wide Bandwidth Channel Clear Channel Assessment Segmentation
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Solution Overview
Problem
Current clear channel assessment (CCA) techniques are inadequate for wide bandwidth channels, particularly those exceeding 160 MHz, as they fail to efficiently determine the busy or idle status of these channels, leading to potential interference and communication disruptions.
Innovation Solution
The method involves segmenting a wide bandwidth channel into multiple subchannels, such as primary and secondary channels of varying bandwidths (e.g., 20 MHz, 40 MHz, 80 MHz, and 160 MHz), and performing clear channel assessments on each to generate a comprehensive CCA indication report that indicates the busy or idle status, which is then provided to the media access control (MAC) layer to prevent transmission on busy channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current CCA techniques are used for wide bandwidth channels, then the assessment process is simple, but the detection accuracy and reliability are insufficient
Solution Approach 1:
The patent segments a wide bandwidth channel (greater than 160 MHz) into multiple subchannels, performing separate CCA checks on each subchannel. This segmentation approach improves detection accuracy by evaluating each portion independently while managing complexity through systematic processing of divided channels.
2Reliability
If multiple CCA checks are performed on subchannels, then the channel status detection accuracy improves, but the processing time and complexity increase
Solution Approach 1:
The patent performs preliminary CCA checks on individual subchannels before determining overall channel availability. By conducting assessments on divided portions first and then aggregating results, the system improves reliability of channel status determination while managing time loss through structured sequential processing.
3Reliability
If comprehensive CCA indication reports are generated for all subchannels, then the communication reliability improves, but the information processing overhead increases
Solution Approach 1:
The patent generates CCA indication reports that segment channel status information by subchannel, providing detailed reliability data for each portion. This segmented reporting approach improves communication reliability through comprehensive status information while managing data volume through organized, structured presentation of results.
Data Source
AI summary
This disclosure provides methods, devices, systems, and computer programs encoded on storage media, for clear channel assessment (CCA) for a wide bandwidth channel. For example, a wide bandwidth channel may have a bandwidth that is greater than 160 MHz bandwidth. An example wide bandwidth channel has a 320 MHz bandwidth. The CCA techniques include detection thresholds that may be used for wide bandwidth channels. In some implementations, a CCA process may be extended to include assessments of extended portions of a wide bandwidth channel (such as a tertiary 80 MHz bandwidth channel and a quaternary 80 MHz bandwidth channel). In some implementations, a CCA process may be extended to use an assessment of a secondary channel of the wide bandwidth channel that has a 160 MHz bandwidth.