Spatial Reuse Signaling for Wireless Link Interference Control
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Solution Overview
Problem
Existing data transmission methods in wireless local area networks face interference issues between primary links and spatial reuse links, which affect transmission quality and system throughput.
Innovation Solution
A data transmission method where a primary access point judges whether a spatial reuse link can use time-frequency resources of the primary link by generating and sending spatial reuse transmission signaling, allowing or prohibiting the reuse link to use these resources based on interference levels, thereby reducing mutual interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spatial reuse link uses time-frequency resources of primary link, then system throughput is improved, but interference between links increases
Solution Approach 1:
The patent dynamically adjusts the transmit power parameter of the spatial reuse link based on channel conditions and interference levels. By changing the power parameter adaptively, the system allows spatial reuse to improve throughput while controlling interference to acceptable levels, resolving the contradiction between productivity and harmful factors
Solution Approach 2:
The patent implements a feedback mechanism where receiving devices report channel state information and interference levels to transmitting devices. This feedback loop enables real-time adjustment of transmission parameters, allowing the system to maximize throughput through spatial reuse while maintaining interference within acceptable bounds through continuous monitoring and adjustment
2Adaptability or versatility
If multiple stations use same time-frequency resources, then resource utilization is improved, but transmission quality deteriorates
Solution Approach 1:
The patent applies different transmission strategies to different spatial locations and channel conditions. By identifying specific geographic areas and channel states where interference is acceptable, the system allows spatial reuse in those local regions while maintaining high transmission quality in sensitive areas, thus improving overall resource utilization without compromising reliability
Solution Approach 2:
The patent makes the transmission system dynamic by continuously adapting spatial reuse opportunities based on real-time channel conditions, traffic demands, and interference levels. This dynamic approach allows the system to flexibly allocate resources, improving utilization when conditions permit while maintaining quality when conditions require stricter control
Data Source
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AI summary
The present invention discloses a data transmission method and apparatus. The method includes: performing, by a primary access point, judging processing according to a judging parameter, where the judging processing is used to judge whether a reuse transmission device of a spatial reuse link is allowed to use all or some of time-frequency resources of a primary link to transmit data; generating, by the primary access point, spatial reuse transmission signaling according to a judging result obtained after the judging processing; and sending, by the primary access point, the spatial reuse transmission signaling, so that the reuse transmission device performs data transmission processing based on the spatial reuse link and according to the spatial reuse transmission signaling. According to the data transmission method and apparatus in embodiments of the present invention, mutual interference between the primary link and the spatial reuse link during data transmission can be reduced, and transmission quality can be improved.