Wireless Terminal Channel Sensing Burden Allocation
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Solution Overview
Problem
In wireless communication systems using multi-link devices, channel sensing by all terminals leads to unfair resource allocation and inefficient communication due to varying terminal specifications, causing either low-spec devices to be overburdened or high-spec devices to bear excessive sensing burdens, which hinders fair communication and device switching.
Innovation Solution
A system where each wireless terminal performs channel sensing and transmits sensing information, including the channel identifier, sensing result, and terminal identifier, to a base station, which calculates and stores sensing time and allocates communication resources as rewards, ensuring fair resource distribution without causing unfairness among terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If channel sensing is equally shared by all wireless terminals, then the sensing burden is distributed, but terminals with low specifications bear relatively large burden and communication quality deteriorates
Solution Approach 1:
The patent applies local quality by assigning different sensing burdens to different terminals based on their specifications. High-specification terminals are assigned greater sensing burdens (more channels or longer sensing periods) while low-specification terminals are assigned lighter burdens, matching the sensing responsibility to the local capability of each terminal.
2Reliability
If heavy sensing burden is imposed on high specification terminals, then low specification terminals are favorably treated, but fairness between terminals is compromised and device switching is hindered
Solution Approach 1:
The patent implements dynamics by making the sensing burden assignment flexible and adjustable rather than fixed. The AP can dynamically adjust the sensing burden based on terminal performance, communication conditions, and fairness requirements. This allows the system to adapt to changing conditions and maintain fairness while ensuring low-spec terminals are adequately protected.
3Extent of automation
If the AP performs channel sensing by itself, then centralized control is achieved, but all wireless terminals are in communication disabled state during sensing and frequency utilization efficiency deteriorates
Solution Approach 1:
The patent applies segmentation by dividing the channel sensing task into multiple parts performed by different terminals simultaneously. Instead of one AP sensing all channels sequentially, multiple terminals sense different channels or the same channels in parallel, thereby maintaining communication for other terminals while gathering comprehensive sensing data across the network.
4Productivity
If a congested channel is selected, then communication can be established, but communication performance is deteriorated in all wireless terminals using the channel
Solution Approach 1:
The patent implements preliminary action by performing channel sensing before establishing communication. Terminals sense channels in advance to detect congestion levels and identify suitable channels for communication. This preliminary sensing ensures that when communication is established, it occurs on non-congested channels, avoiding performance deterioration.
Data Source
AI summary
The wireless communication system includes a plurality of wireless terminals each including a plurality of wireless interfaces corresponding to a plurality of channels in different frequency bands, and a wireless base station device that establishes wireless communication with the wireless terminals. Each of the wireless terminals performs channel sensing, and transmits sensing information including an identifier of a sensed channel, a sensing result of the channel, and an identifier of the wireless terminal. The wireless base station device calculates and stores a sensing time for each of the wireless terminals on the basis of the sensing information, the sensing time being an accumulated value of time required for sensing by the wireless terminal, and allocates a reward according to the sensing time to each of the plurality of wireless terminals.