Wireless Device Bandwidth Segmentation for Channel Efficiency
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Solution Overview
Problem
Legacy terminals supporting static bandwidth methods in wireless communication systems reduce overall channel efficiency when coexisting with MU-MC compliant terminals, as they do not explicitly notify their operating method, leading to inefficient channel usage.
Innovation Solution
A wireless communication device that designates a narrower bandwidth to legacy terminals and notifies MU-MC compliant terminals of available channels, allowing MU-MC compliant terminals to operate efficiently by ignoring the restricted bandwidth information and using channels without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If legacy terminals use static bandwidth method with wide channel width (80 MHz or 160 MHz), then they can maintain simple operation and broad compatibility, but overall system channel efficiency is reduced
Solution Approach 1:
The patent segments the channel bandwidth information by creating separate information elements: one for legacy terminals (restricting them to narrower bandwidths) and another for MU-MC compliant terminals (allowing wide bandwidth usage). This segmentation allows each terminal type to operate in its optimal bandwidth range, improving overall channel efficiency while maintaining compatibility.
Solution Approach 2:
The patent applies local quality by providing different bandwidth information to different terminal types. Legacy terminals receive bandwidth restriction information appropriate for their capabilities, while MU-MC compliant terminals receive information enabling them to utilize wide bandwidths. This localized information approach ensures each terminal operates efficiently within its specific context.
2Device complexity
If legacy terminals operate without explicit method notification, then device complexity is reduced, but channel usage efficiency deteriorates
Solution Approach 1:
The patent introduces an intermediary mechanism (bandwidth information elements in management frames) that mediates between legacy terminals and the network. These information elements carry bandwidth restriction or availability information without requiring legacy terminals to understand complex operation modes, thus maintaining terminal simplicity while improving channel efficiency through informed resource allocation.
3Productivity
If MU-MC compliant terminals detect CCA in individual channel basis and perform dynamic operation, then throughput is increased, but system complexity increases
Solution Approach 1:
The patent enables dynamic bandwidth operation for MU-MC compliant terminals by allowing them to detect CCA on an individual channel basis and dynamically select optimal channels. The system dynamically adjusts channel allocation based on interference conditions, with terminals capable of switching between different bandwidth configurations (20 MHz, 40 MHz, 80 MHz, 160 MHz) based on real-time channel conditions and network allocation.
Data Source
AI summary
A wireless communication device includes a receiver configured to receive first information to designate a first bandwidth narrower than a maximum available bandwidth extended based on a predetermined channel, and to receive second information to designate a plurality of channels including at least one channel different from a channel in the first bandwidth among a plurality of channels in the maximum bandwidth; and controlling circuitry configured to specify a plurality of channels for use in communication based on at least the second information.