Electronic Device Signal Interference Alleviation via Synchronization
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Solution Overview
Problem
In congested WLAN environments, signal interference between neighboring Basic Service Sets (BSSs) occurs due to shared limited frequency resources, leading to degraded data transmission speed and latency, and existing methods for alleviating interference are costly in terms of time and resources, especially for real-time channel environment updates.
Innovation Solution
An electronic device that identifies external devices affected by signal interference and selectively obtains channel environment information, using synchronization signals to determine operation modes and control channel sounding operations, thereby reducing interference by synchronizing Target Wake Time (TWT) service periods and applying appropriate weight vectors to antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If channel sounding is performed continuously to obtain real-time channel environment information, then signal interference with neighboring BSS is alleviated, but time resources and energy are excessively consumed
Solution Approach 1:
The patent implements channel sounding at specific periodic intervals rather than continuously. The AP determines channel environment information at predetermined time points, which reduces the frequency of channel sounding operations while still maintaining effective interference mitigation capability.
Solution Approach 2:
The patent performs channel sounding in advance before interference becomes severe. By obtaining channel environment information proactively at scheduled intervals, the system prepares weight vectors ahead of time, avoiding the need for continuous real-time channel measurements.
2Reliability
If weight vectors are determined using channel environment information from neighboring BSS, then signal interference is reduced, but the cost for obtaining real-time scheduling information of electronic devices in neighboring BSS increases
Solution Approach 1:
The patent extracts only the necessary channel environment information from neighboring BSS without requiring full real-time scheduling information. The AP selectively obtains channel state information needed for weight vector determination, discarding unnecessary scheduling details, thereby reducing the information exchange burden.
3Reliability
If CCA process is performed to identify occupied wireless medium, then transmission collisions are avoided, but transmission delay occurs when the medium is determined to be occupied even though interference is already alleviated
Solution Approach 1:
The patent uses feedback from channel environment information to make intelligent transmission decisions. The AP monitors channel conditions and weight vector effectiveness, and only performs CCA when genuinely necessary, avoiding redundant CCA operations that would cause unnecessary delays while maintaining collision avoidance.
Data Source
AI summary
An electronic device and method thereof are provided for alleviating signal interference with a neighboring BSS. The electronic device includes a communication circuit, and a processor configured to receive, using the communication circuit, a synchronization signal from a first external electronic device, and based on the received synchronization signal, determine an operation mode of the electronic device as one of a DL operation mode or a UL operation mode. The synchronization signal sets the operation mode of the electronic device to be identical to an operation mode of a second external electronic device included in a neighboring BSS.