Base Station Contention Window for Multi-Link Wireless Coexistence
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Solution Overview
Problem
In wireless communication systems, the coexistence of multi-link devices using both low and high frequency bands with existing devices compatible only with low frequency bands leads to contention, resulting in reduced communication speeds for the latter.
Innovation Solution
A wireless communication system that includes a multi-link compatible base station, which sets a contention window value greater for communications with multi-link devices than for existing devices, ensuring preferential transmission opportunities for the latter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a multi-link device uses both low frequency band and high frequency band simultaneously, then radio capacity and communication speed are improved, but contention occurs with existing devices using only low frequency band, causing their communication speed to decrease
Solution Approach 1:
The patent changes the parameter of contention window value dynamically based on device type. Multi-link devices are assigned a first contention window value while existing single-link devices are assigned a second contention window value that is larger than the first. This parameter differentiation allows multi-link devices to transmit more efficiently while ensuring existing devices retain sufficient transmission opportunities, thus resolving the speed degradation issue.
2Productivity
If a multi-link device uses both low frequency band and high frequency band simultaneously, then communication efficiency is improved, but fairness in channel access between multi-link devices and existing devices deteriorates
Solution Approach 1:
The patent applies different contention window values to different device types based on their link capabilities. Multi-link devices (with both 5GHz and 6GHz interfaces) receive a smaller contention window value (first value), while existing single-link devices receive a larger contention window value (second value). This localized quality differentiation ensures that each device type operates with parameters optimized for its capabilities while maintaining overall system fairness.
Data Source
AI summary
A wireless communication system includes: a first wireless terminal capable of communicating through both a first communication scheme using a first frequency band and a second communication scheme using a second frequency band higher than the first frequency band; a second wireless terminal that is compatible with communication through the first communication scheme and is not compatible with communication through the second communication scheme; and a multi-link compatible base station that accommodates the first wireless terminal and the second wireless terminal. A contention window value during transmission in communication between the base station and the first wireless terminal through the first communication scheme is set to a value greater than a predetermined value that is a contention window value during transmission in communication between the base station and the second wireless terminal through the first communication scheme.