EDCA Channel Access Rules for CrTWT Priority Windows
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Solution Overview
Problem
Existing wireless communication networks face challenges in efficiently managing channel access during coordinated restricted targeted wake-up time (CrTWT) service periods, leading to overhead and inefficient use of communication resources.
Innovation Solution
Implementing enhanced distributed channel access (EDCA) rules within CrTWT service periods, where a wireless device obtains a coordinated time region message for prioritized access, allowing channel access procedures to be extended based on the channel access procedure performed within this region, reducing the need for overhead and optimizing resource use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional channel access procedures are used during CrTWT service periods, then channel access is managed according to standard protocols, but overhead increases and resource efficiency decreases
Solution Approach 1:
The patent modifies EDCA parameters specifically for CrTWT service periods, changing the channel access mechanism from conventional DCF-based procedures to optimized EDCA procedures with adjusted contention windows, interframe spaces, and priority levels. This parameter customization reduces overhead and improves resource efficiency without requiring new protocols.
Solution Approach 2:
The patent implements dynamic channel access where the EDCA parameters are adjusted based on whether the current time falls within a CrTWT service period. The system dynamically switches between conventional channel access parameters and optimized CrTWT-specific parameters, allowing adaptive resource management that improves efficiency during designated service periods while maintaining compatibility outside those periods.
2Reliability
If channel access procedures are extended within coordinated time regions, then latency-sensitive traffic is prioritized, but the time duration for channel access increases
Solution Approach 1:
The patent establishes predetermined CrTWT service periods in advance, where the start times, durations, and associated EDCA parameters are configured before actual channel access occurs. This preliminary configuration allows devices to know in advance when prioritized access will be available, enabling them to buffer latency-sensitive traffic and initiate channel access procedures at optimal moments within these pre-planned windows.
Solution Approach 2:
The patent implements periodic CrTWT service periods that recur at scheduled intervals, creating regular opportunities for prioritized channel access. During these periodic windows, the optimized EDCA parameters are activated, providing consistent latency prioritization for time-sensitive traffic while maintaining normal operation during intervening periods. This periodic structure balances the need for extended access time with overall network efficiency.
Data Source
AI summary
This disclosure provides methods, components, devices and systems for EDCA rules within CrTWT service periods. Some aspects more specifically relate to defining EDCA rules for channel access during a coordinated time region. In some examples, a wireless device may obtain a message indicating a coordinated time region associated with a first access point (AP). The message may request prioritized access for the first AP to a shared wireless channel during the coordinated time region. The wireless device may perform a channel access procedure for the shared wireless channel over a time duration that occurs within the coordinated time region. A length of the time duration is extended based at least in part on the channel access procedure being performed within the coordinated time region.