Guided Adaptive Spatial Reuse in Wireless Networks
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Solution Overview
Problem
Existing wireless local area networks (WLANs) face challenges in managing spatial reuse across overlapping service sets, leading to interference and reduced throughput due to inadequate control over signal preamble detection thresholds and transmit power levels.
Innovation Solution
An apparatus and method that utilize guiding information carried by wireless signals to determine spatial reuse parameters, including signal preamble detection thresholds and transmit power levels, to control transceivers and manage concurrent transmissions across overlapping service sets, ensuring minimal interference and optimal communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spatial reuse is enabled to allow concurrent transmissions in overlapping service sets, then throughput is improved, but interference between service sets increases
Solution Approach 1:
The patent dynamically adjusts transmission parameters including preamble detection thresholds and transmit power levels based on real-time wireless environment conditions. By changing these parameters adaptively, the system enables spatial reuse to improve throughput while controlling interference through optimized parameter selection.
Solution Approach 2:
The system implements feedback mechanisms where wireless devices monitor the wireless environment, detect interference levels, and adjust their transmission behavior accordingly. This closed-loop control allows the system to maintain high throughput by enabling concurrent transmissions while preventing excessive interference through continuous environmental monitoring and parameter adjustment.
2Measurement precision
If signal preamble detection threshold is lowered to detect weaker signals, then measurement precision is improved, but false detection of ongoing communications increases
Solution Approach 1:
The patent dynamically adjusts the signal preamble detection threshold based on wireless environment conditions and spatial reuse requirements. By adapting this parameter rather than using a fixed threshold, the system achieves accurate detection of legitimate weak signals while minimizing false detections that would prevent valid spatial reuse opportunities.
Solution Approach 2:
The system transitions from static threshold settings to dynamic threshold adjustment based on real-time conditions. The detection threshold is adapted according to the wireless environment, allowing the system to maintain high measurement precision for weak signal detection while reducing false detections through context-aware parameter selection.
3Area of stationary object
If transmit power level is increased to extend communication range, then coverage area is improved, but interference with other service sets increases
Solution Approach 1:
The patent dynamically adjusts transmit power levels based on wireless environment conditions, spatial reuse opportunities, and interference levels. By adapting the power level parameter rather than using fixed high power, the system extends coverage area when beneficial while minimizing interference with overlapping service sets through context-aware power control.
Solution Approach 2:
The system applies different transmit power levels in different spatial and temporal contexts. Instead of uniform high power transmission, the patent optimizes power levels locally based on specific wireless conditions, allowing extended coverage in favorable conditions while reducing power to minimize interference in congested environments.
4Reliability
If spatial reuse parameters are strictly controlled to prevent interference, then reliability is improved, but productivity decreases
Solution Approach 1:
The patent transitions from static, conservative spatial reuse parameter control to dynamic adaptation based on real-time wireless conditions. By continuously monitoring the environment and adjusting parameters accordingly, the system maintains communication reliability when interference risks are present while enabling higher throughput when conditions are favorable, achieving both goals through adaptability.
Data Source
AI summary
Aspects of the disclosure provide an apparatus for wireless communication. The apparatus includes a transceiver and a processing circuit. The transceiver is configured to transmit and receive wireless signals. The processing circuit is configured to receive guiding information for spatial re-use that is carried by a wireless signal transmitted from another apparatus in a same service set with the apparatus, determine wireless information surrounding the apparatus based on the received wireless signals, determine spatial re-use parameters following the guiding information and based on the wireless information surrounding the apparatus, and control the transceiver based on the determined spatial re-use parameters to control transmission concurrently with ongoing wireless communication in one or more other service sets that overlap with the service set.