Multi-Link Station Channel Sensing for Spatial Reuse
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current multi-link communication systems lack effective schemes that apply spatial reuse (SR) mechanisms to non-AP STA MLDs with non-simultaneous transmit and receive (NSTR) capabilities, leading to inefficiencies in channel utilization and throughput.
Innovation Solution
A method and apparatus for a station supporting multi-link communication that senses and judges the channel state of NSTR link pairs, determining whether to transmit data based on the busy status of the first link and, if idle, assessing the second link's busy state to implement spatial reuse, thereby optimizing channel usage and spectrum utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spatial reuse mechanism is applied to multi-link communication with NSTR capabilities, then channel utilization and throughput are improved, but channel state sensing complexity and interference management difficulty increase
Solution Approach 1:
The patent segments the channel state sensing process into separate operations for different links (first link and second link) within the NSTR link pair. By independently sensing and judging each link's channel state, the system manages complexity through structured division of sensing tasks while enabling spatial reuse for improved throughput.
Solution Approach 2:
The patent implements preliminary channel state sensing before data transmission decision-making. The station senses both the first link (for data transmission) and the second link (for spatial reuse assessment) in advance, allowing the MAC layer to make informed transmission decisions that optimize throughput while managing sensing complexity through pre-computed channel state information.
2Productivity
If spatial reuse is implemented in multi-link communication, then spectrum utilization is improved, but channel busy judgment complexity increases
Solution Approach 1:
The patent divides the channel busy judgment into separate operations: first judging the first link's channel state for data transmission eligibility, then independently judging the second link's channel state for spatial reuse determination. This segmentation reduces the complexity of combined judgment by treating each link's channel status as an independent measurement task.
Solution Approach 2:
The patent employs feedback mechanisms where the MAC layer uses the sensed channel state information from both links to determine transmission decisions. The judgment results from sensing feed back to the MAC layer, enabling dynamic transmission control that optimizes spectrum utilization while managing judgment complexity through structured feedback loops.
3Productivity
If NSTR link pair sensing is performed for both links, then spatial reuse opportunity is improved, but transmission delay increases
Solution Approach 1:
The patent performs preliminary sensing of both links before the actual data transmission decision. By sensing the first link and second link in advance and storing their channel state information, the system enables spatial reuse opportunities to be identified beforehand, reducing transmission delay through pre-computed sensing results that guide rapid transmission decisions.
Data Source
AI summary
A method for communication is performed by a station supporting multi-link communication, includes: sensing a first link and a second link, wherein the first link and the second link belong to a non-simultaneous transmit and receive (NSTR) link pair, and the first link is a link to be used for data transmission in the NSTR link pair; judging whether a channel of the first link is busy based on the sensing of the first link; and determining whether to judge a channel state of the second link based on the judged result of the first link.