Multi-AP RTWT Coordination to Reduce TXOP Interruptions
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Solution Overview
Problem
In multi-AP coordination scenarios, communication quality is affected due to the need for a station to terminate transmission opportunities (TXOP) before multiple restricted target wake times (RTWT) of neighboring access points, leading to fragmented time resources and reduced communication efficiency.
Innovation Solution
A communication method where a first access point sends a radio frame to a second access point to request modifications to RTWT parameters, such as start times and intervals, to align and optimize RTWT agreements among neighboring access points, thereby reducing TXOP interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a station terminates TXOP before multiple RTWT service periods of neighboring access points, then communication quality is improved, but time resource utilization deteriorates due to fragmented transmission opportunities
Solution Approach 1:
The patent merges the RTWT service periods of multiple neighboring access points into a coordinated schedule. The first access point sends a radio frame to the second access point to request modification of RTWT parameters, and the second access point adjusts its RTWT service period to align with the first access point's schedule. This combining approach reduces the number of separate TXOP terminations needed while maintaining communication quality.
Solution Approach 2:
The patent changes the RTWT parameters (service period start time, duration, or interval) of the second access point's RTWT agreement through inter-AP communication. By modifying these parameters, the system aligns the RTWT service periods of neighboring access points, thereby reducing fragmented TXOP interruptions and improving time resource utilization while maintaining communication reliability.
2Productivity
If RTWT parameters of neighboring access points are aligned through coordination, then TXOP interruptions are reduced, but system complexity increases due to inter-AP communication requirements
Solution Approach 1:
The patent uses a standardized radio frame as an intermediary for communication between access points. The first access point sends a radio frame containing RTWT parameter modification requests to the second access point, which processes and responds with acknowledgment or counter-proposals. This intermediary mechanism provides a structured way to coordinate RTWT parameters while managing system complexity through protocol standardization.
Data Source
AI summary
This application relates to the communication field, and in particular, to a communication method and a communication apparatus. The solutions may be applied to a WLAN system that supports a next-generation Wi-Fi protocol of IEEE 802.11ax, for example, 802.11be, Wi-Fi 7, or EHT, and for another example, 802.11 series protocols such as a next-generation protocol of 802.11be, and Wi-Fi 8. According to this application, a first AP may send a first radio frame to a second AP, to request the second AP to modify an RTWT parameter of at least one RTWT agreement. This facilitates enhanced transmission in a multi-AP coordination scenario and improves communication quality.