Proxy STA Discovery Frame Consolidation for WLAN Power Reduction
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Solution Overview
Problem
In wireless local area networks (WLANs), devices face challenges in efficiently discovering and transmitting service advertisements due to limited power and channel congestion, especially for delay-sensitive applications like augmented reality and robotics.
Innovation Solution
A station (STA) in a wireless network is configured to receive a discovery frame from an origin STA, identify services intended for proxy transmission, and generate a second discovery frame. This second frame is then transmitted to other STAs on behalf of the origin STA, optimizing service advertisement transmission and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices transmit service advertisements periodically to increase discovery reliability, then service discovery reliability is improved, but power consumption increases
Solution Approach 1:
The patent introduces a proxy device that acts as an intermediary between the origin device and target devices. The proxy device receives discovery frames from the origin device and transmits them to target devices, enabling the origin device to reduce its transmission frequency while maintaining discovery reliability through the proxy's periodic transmissions.
2Speed
If devices transmit discovery frames frequently to improve service discovery speed, then service discovery speed is improved, but channel congestion increases
Solution Approach 1:
The proxy device serves as a mediator that consolidates discovery frame transmissions. Instead of multiple origin devices transmitting simultaneously causing channel congestion, the proxy receives frames from multiple origins and transmits them in a coordinated manner, reducing overall channel contention while maintaining discovery speed.
Solution Approach 2:
The patent merges multiple discovery frame transmissions into single proxy-transmitted frames. The proxy device combines discovery information from multiple origin devices and transmits consolidated frames, reducing the total number of transmissions required in the network and thereby reducing channel congestion.
3Ease of operation
If origin devices transmit discovery frames directly to all target devices, then transmission directness is improved, but device complexity increases
Solution Approach 1:
The proxy device acts as a centralized intermediary that manages discovery frame distribution. Origin devices only need to transmit frames to the proxy, and the proxy handles the complexity of distributing frames to multiple target devices, thereby reducing the operational complexity for origin devices while maintaining direct transmission paths through the proxy.
Data Source
AI summary
An embodiment includes a station (STA) in a wireless network, the STA comprising a memory and a processor coupled to the memory, the processor configured to receive, from an origin STA, a first discovery frame that includes one or more services intended for proxy transmission and one or more service identifiers each associated with a respective one of the one or more services, identify the one or more services based on the one or more service identifiers, generate a second discovery frame based on the first discovery frame, wherein the second discovery frame includes the one or more services intended for proxy transmission included in the first discovery frame; and transmit, to one or more other STAs on behalf of the origin STA, the second discovery frame.