Wi-Fi Beacon RTWT Mapping for Non-Transmitted AP Identification
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Solution Overview
Problem
In the context of Wi-Fi 6's restricted TWT (RTWT) mechanism for low-delay service transmission, stations (STAs) face challenges in clearly and efficiently determining the RTWT information of non-transmitted access points (APs) based on beacon frames.
Innovation Solution
Incorporating identification information and RTWT parameters in radio frames to facilitate efficient determination of RTWT parameters, reducing redundant processing and power consumption by STAs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If RTWT information of non-transmitted AP is included in the MBSSID element, then the STA can obtain RTWT information, but the STA cannot clearly determine which AP the RTWT parameter belongs to and cannot efficiently process the information
Solution Approach 1:
The patent segments the RTWT information by including identification information (such as BSSID or AP ID) along with the RTWT parameters in the TWT element. This allows the STA to clearly identify which AP each RTWT parameter belongs to, resolving the ambiguity problem while maintaining efficient processing through structured data organization.
2Loss of information
If the beacon frame includes complete RTWT parameters for all APs, then the STA can obtain all necessary information, but the overhead and air interface duration increase
Solution Approach 1:
The patent extracts only the essential identification information (BSSID or AP ID) and key RTWT parameters needed by the STA, rather than including complete RTWT configurations for all APs. This reduction approach maintains information completeness for decision-making while significantly reducing the radio frame overhead and air interface duration.
3Adaptability or versatility
If the STA processes RTWT parameters from multiple APs separately, then the STA can handle each AP's requirements, but the power consumption increases
Solution Approach 1:
The patent merges the RTWT information from multiple APs into a single TWT element structure, including identification information that links parameters to specific APs. This allows the STA to process all RTWT information in one unified operation rather than separately handling each AP's parameters, thereby reducing power consumption while maintaining multi-AP service support.
Data Source
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AI summary
This application provides a wireless communication method and a communication apparatus. This application is applied to a wireless local area network system that supports series protocols such as a next-generation Wi-Fi protocol of the IEEE 802.11ax, for example, 802.11be, and Wi-Fi 7, and a next-generation protocol of the 802.11be, for example, Wi-Fi 8, and may be further applied to an ultra-bandwidth-based wireless personal area network system. The method includes: An access point 1 generates a radio frame and sends the radio frame, where the radio frame includes a multiple basic service set identifier element and a target wake time element located outside the multiple basic service set identifier element, the target wake time element includes a restricted target wake time parameter of an access point 2 and identification information of the access point 2, and the multiple basic service set identifier element corresponds to a multiple basic service set identifier set to which the access point 1 and the access point 2 belong. The identification information of the access point 2 is included. This helps a station determine that the restricted target wake time parameter belongs to the access point 2.