WLAN Link Management for Interference Mitigation
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Solution Overview
Problem
In wireless local area network (WLAN) systems, interference from peripheral devices can lead to data transmission failures, decreased processing speed, and increased latency due to shared radio resources and hidden interference, which existing clear channel assessment (CCA) methods struggle to mitigate effectively.
Innovation Solution
An electronic device establishes multiple links with an external device via a communication circuit and processor, identifying channel state information and retransmission data to restrict communication via error-prone links, thereby reducing interference and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple links are established with external devices to improve communication reliability, then reception performance is enhanced, but device complexity increases
Solution Approach 1:
The communication system is segmented into multiple independent links (first link, second link, third link) that can operate simultaneously. Each link can be independently managed and selected based on channel conditions, allowing the system to achieve high reliability through diversity while maintaining manageable complexity through modular link management.
Solution Approach 2:
The system dynamically selects and switches between different links based on real-time channel state information and error conditions. The processor actively monitors performance metrics and adjusts which link is used for communication, making the system adaptive and resilient to changing conditions without requiring complex static configurations.
2Reliability
If clear channel assessment is used to reduce interference, then transmission reliability improves, but latency increases due to random back-off window configuration
Solution Approach 1:
The system performs preliminary actions by establishing multiple links in advance and maintaining their operational status. When data transmission is needed, the system can immediately utilize pre-established links without waiting for random back-off periods, thereby reducing latency while maintaining reliability through the preliminary setup of multiple communication paths.
Solution Approach 2:
The system ensures continuous useful action by maintaining multiple active links that are ready for immediate use. Instead of randomly waiting for channel availability through back-off windows, the system continuously prepares and maintains multiple links, allowing data transmission to proceed without interruption or significant delay, thus eliminating latency while preserving transmission reliability.
3Reliability
If multiple links are monitored for channel state information to identify error conditions, then communication quality improves, but processing requirements increase
Solution Approach 1:
The system applies local quality by monitoring channel state information specific to each individual link rather than treating all links uniformly. Each link is evaluated based on its own performance characteristics and error conditions, allowing the system to make localized decisions about which link to use without requiring complex global analysis of all possible communication paths.
Data Source
AI summary
Various embodiments of the disclosure relate to apparatuses and methods for WLAN communication in an electronic device. Example electronic devices according to the present disclosure may include a communication circuit configured to support WLAN communication and at least one processor, wherein the processor is configured to identify the number of times of reception of retransmission data of each of a plurality of links with an external electronic device for a designated time period, based on the number of times of reception of the retransmission data, when the plurality of links includes a link satisfying a designated error condition, identify another link related to the link satisfying the designated error condition, and restrict the WLAN communication via the another link related to the link satisfying the designated error condition.