Uplink Sounding Trigger Frame Resource Allocation
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Solution Overview
Problem
Wireless local area networks (WLANs) face challenges in efficiently managing resources to provide bandwidth and response times due to multiple devices sharing the same resources, with some devices limited by their communication protocols or hardware bandwidth, and the need to operate with both new and legacy protocols.
Innovation Solution
The implementation of a method for uplink sounding in WLANs using trigger frames that include resource unit and spatial stream allocations, allowing HE stations to determine and adjust their transmit power based on path loss and target receive signal strength, enabling efficient communication with both HE and legacy devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple devices share the same wireless resources, then network coverage and device connectivity are improved, but resource contention and communication efficiency deteriorate
Solution Approach 1:
The patent segments the wireless medium into distinct resource units (RUs) that can be independently allocated to different stations. This segmentation allows multiple devices to share the network while maintaining dedicated resource allocation, thereby improving communication efficiency despite increased device connectivity.
Solution Approach 2:
The patent implements dynamic resource allocation where resource units are assigned based on real-time channel conditions and station requirements. This dynamic approach allows the system to adapt to changing traffic patterns and channel states, maintaining high efficiency as the number of connected devices varies.
2Productivity
If newer communication protocols are implemented, then communication efficiency and bandwidth utilization are improved, but compatibility with legacy devices deteriorates
Solution Approach 1:
The patent creates a universal resource allocation mechanism that works across both newer HE protocols and legacy protocols. The trigger frame structure and resource unit allocation method are designed to be compatible with multiple protocol versions, allowing the system to maintain high bandwidth utilization while supporting both HE and legacy devices simultaneously.
Solution Approach 2:
The patent introduces trigger frames as an intermediary mechanism that coordinates communication between HE stations and legacy devices. These trigger frames carry resource allocation information that can be interpreted by both protocol types, enabling efficient resource management while maintaining protocol compatibility.
3Reliability
If transmit power is increased to improve signal strength, then communication reliability is improved, but energy consumption and interference to other devices worsen
Solution Approach 1:
The patent applies local quality by allocating different transmit power levels to different resource units based on specific channel conditions and station requirements. Instead of uniformly increasing power across all transmissions, the system optimizes power allocation locally for each station-resource unit pair, improving reliability only where needed while minimizing energy consumption and interference.
Data Source
AI summary
Computing readable media, apparatuses, and methods for signaling for uplink sounding are disclosed. An apparatus is disclosed comprising processing circuitry. The processing circuitry may be configured to: decode a trigger frame comprising a resource unit (RU) allocation, and a spatial stream (SS) allocation for the first wireless device to transmit an uplink (UL) sounding signal, where the trigger frame include an indication that the trigger frame is for the UL sounding signal. The processing circuitry may be further configured to: determine a path loss based on the indication of the transmit power and a received power of the trigger frame at the first wireless device. The processing circuitry may be configured to: determine a transmit power for the UL sounding signal based on the path loss; and transmit the UL sounding signal in accordance with the RU allocation, the SS allocation, and the transmit power.