R-TWT Scheduling With BSS Feedback for Interference Control
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Solution Overview
Problem
In wireless communication systems, interference within restricted target wake time (R-TWT) service periods (SPs) can hinder the timely delivery of latency-sensitive traffic, particularly in scenarios like low-latency and high-definition video streaming.
Innovation Solution
A method where a station device reports interference Basic Service Set (BSS) information to an access point device, allowing the access point to establish R-TWTs that minimize overlap and interference with other overlapping BSSs, thereby reducing interference during R-TWT SPs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If R-TWT is established for latency-sensitive traffic, then delivery timeliness is improved, but interference from overlapping BSSs worsens transmission reliability
Solution Approach 1:
The station device performs preliminary detection of overlapping BSS information before establishing R-TWT. The access point device uses this pre-detected information to configure R-TWT parameters that avoid interference periods, ensuring reliable transmission from the outset while maintaining timely delivery
Solution Approach 2:
The station device provides feedback about detected overlapping BSS information to the access point device. This feedback enables the access point to adjust R-TWT configuration based on actual interference conditions, balancing delivery timeliness with transmission reliability
2Productivity
If R-TWT service period is extended to ensure complete data transmission, then productivity is improved, but exposure to interference from overlapping BSSs increases
Solution Approach 1:
The system performs preliminary detection of overlapping BSS transmission patterns before establishing R-TWT. By knowing when interference occurs in advance, the R-TWT service period can be extended to required duration while positioning it in time slots with minimal interference exposure
Solution Approach 2:
The access point device adjusts R-TWT parameters (such as target wake time, service period duration, and interval) based on detected overlapping BSS information. This allows optimization of the service period to achieve necessary throughput while minimizing interference exposure through parameter tuning
3Adaptability or versatility
If multiple R-TWTs are established to serve different latency-sensitive flows, then adaptability is improved, but coordination complexity and interference management difficulty increase
Solution Approach 1:
Multiple R-TWT configurations for different traffic flows are merged into a unified management framework at the access point device. The access point coordinates all R-TWT instances using the detected overlapping BSS information, simplifying interference management while maintaining adaptability to serve multiple latency-sensitive flows
Data Source
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AI summary
Disclosed are a wireless communication method, an access point device and a station device, and the method includes: receiving, by a first access point device, first information transmitted by a first station device, where the first information is used for indicating information of at least one first basic service set (BSS), transmission within the at least one first BSS is capable of interfering with transmission during a restricted target wake time (R-TWT) service period (SP) established between the first station device and the first access point device, and the at least one first BSS is an overlapping basic service set (OBSS) of a BSS to which the first access point device and the first station device belong; and establishing, by the first access point device, an R-TWT between the first access point device and the first station device according to the first information.