Restricted TWT Advertisement With Congestion-Aware Schedule Selection
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Solution Overview
Problem
Current wireless local area network (WLAN) technologies lack mechanisms for including crucial information about restricted Target Wake Time (rTWT) schedules during the advertisement phase, such as congestion level and delay, which are essential for STAs to make informed decisions about joining or establishing rTWT schedules.
Innovation Solution
The proposed solution involves enhancing the restricted TWT schedule advertisement by including additional information such as congestion level, delay, and other parameters in the Broadcast TWT element, allowing STAs to intelligently decide which rTWT schedules to join or request.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional information (congestion level, delay, etc.) is included in the restricted TWT advertisement, then STAs can make informed decisions about joining rTWT schedules, but the advertisement message size and processing complexity increase
Solution Approach 1:
The additional information about rTWT schedules is organized into distinct information elements (IEs) within the advertisement message. Each IE contains specific parameters such as congestion level, delay characteristics, or other schedule attributes, allowing STAs to process and select relevant information systematically without being overwhelmed by a monolithic data structure.
Solution Approach 2:
The patent extracts only the essential and most relevant information elements needed for STA decision-making from the complete set of possible rTWT parameters. By selecting and including only critical information such as congestion level and delay characteristics in the advertisement, the message remains manageable in size while providing sufficient data for informed STA decisions.
2Productivity
If STAs request to join rTWT schedules without additional information, then the joining process is simple, but STAs cannot optimize power consumption and latency selection
Solution Approach 1:
The access point performs preliminary action by including all necessary information elements about rTWT schedules (congestion level, delay characteristics, etc.) in the advertisement phase. This allows STAs to make informed decisions before actually joining a schedule, optimizing their power consumption and latency expectations without complicating the subsequent joining process.
Solution Approach 2:
The advertisement message provides feedback to STAs about the current state and characteristics of available rTWT schedules. By including information elements that reflect congestion levels and delay characteristics, STAs can select schedules that best match their power and latency requirements, creating a feedback loop that enables optimized decision-making.
Data Source
AI summary
Methods and apparatuses for enhancing advertisement of restricted target wake time (TWT) schedules by access points (APs) and improving selection of restricted TWT schedules by stations (STAs) in a wireless local area network. A wireless STA apparatus comprises a transceiver and a processor operably coupled to the transceiver. The transceiver is configured to receive, from an AP, a restricted TWT advertisement that includes a restricted TWT schedule and additional information about the restricted TWT schedule. The processor is configured to determine, based on the additional information, whether to refrain from requesting to become a member of the restricted TWT schedule.