Temporary Primary Channel TWT Allocation for WLAN Resource Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless local area networks (WLANs) face challenges in efficiently allocating resources to multiple devices, particularly when legacy devices coexist with newer protocols, leading to bandwidth limitations and suboptimal response times due to overlapping communication protocols and hardware constraints.
Innovation Solution
The implementation of a radio architecture that supports target wake time (TWT) service periods using a temporary primary channel, allowing for efficient allocation of resources by determining trigger-enabled TWT service periods that do not overlap with beacon transmission times, enabling power save modes and minimizing contention between devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple devices share the same wireless resources in a WLAN, then device connectivity is enabled, but bandwidth utilization deteriorates and response times increase
Solution Approach 1:
The patent segments the wireless medium access by implementing Target Wake Time (TWT) service periods that divide channel access into dedicated time slots for different devices. Each device is assigned specific TWT service periods during which it can exclusively access the channel, preventing collisions and improving bandwidth utilization while maintaining connectivity for multiple devices.
2Adaptability or versatility
If legacy devices and newer protocol devices coexist in the same WLAN, then protocol compatibility is achieved, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent applies local quality by implementing different channel access mechanisms for different device types within the same WLAN. Newer protocol devices can utilize TWT service periods with optimized resource allocation, while legacy devices continue to use traditional contention-based access, allowing each device type to operate with the most efficient protocol for its capabilities.
3Reliability
If devices operate continuously to maintain connectivity, then connection stability is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic action through TWT service periods that schedule device wake-ups at specific intervals. Devices enter power save mode during intervals when they do not need to transmit or receive data, then wake up periodically during their assigned TWT service periods to maintain connectivity. This periodic operation maintains connection stability while significantly reducing energy consumption compared to continuous operation.
Data Source
AI summary
Embodiments of a high efficiency subchannel selective transmission (HE SST) access point (AP) and an HE SST station (STA) are generally described herein. The HE SST AP may determine a temporary primary channel for an HE SST STA. The HE SST AP may communicate with the HE SST STA in a plurality of channels that includes the temporary primary channel and further includes a primary channel. The HE SST AP may determine trigger-enabled target wake time service periods (TWT SPs) for exchange of frames between the HE SST AP and the HE SST STA on the temporary primary channel. The trigger-enabled TWT SPs may be determined to not overlap with target beacon transmission times (TBTTs) at which beacon frames that include delivery traffic indication maps (DTIMs) are to be sent on the primary channel by the HE SST AP.