Trigger-Frame Resource Allocation for Multi-RU WLAN Uplink
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Solution Overview
Problem
In conventional wireless local area networks (WLANs), stations occupy an entire channel for uplink data transmission, leading to reduced frequency utilization efficiency, especially when different stations require varying data transmission sizes.
Innovation Solution
A resource allocation method where a station receives a trigger frame from an access point, which includes user information fields matching the station's association identifier, indicating allocated resource units. This allows for the allocation of multiple resource units to a single station efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If each station occupies an entire channel for uplink data transmission in a contention manner, then stations can transmit data independently without complex resource allocation, but frequency utilization efficiency is greatly reduced
Solution Approach 1:
The channel is divided into multiple resource units (RUs) in the frequency domain, allowing different stations to be allocated specific RUs rather than occupying the entire channel. This segmentation enables parallel transmission for multiple users while improving frequency utilization efficiency.
Solution Approach 2:
The resource allocation is dynamically adjusted based on the data transmission requirements of different stations. The access point determines the RU allocation status for each station according to their specific needs, allowing flexible and efficient resource distribution.
2Adaptability or versatility
If multiple resource units are allocated to a single station with varying data transmission sizes, then resource allocation flexibility is improved, but the complexity of determining and managing multiple RUs for each station increases
Solution Approach 1:
The access point pre-determines the RU allocation status for each station based on their data transmission requirements before transmission begins. This preliminary allocation simplifies the subsequent transmission process and reduces real-time management complexity.
Solution Approach 2:
The system uses feedback mechanisms where the access point monitors the data transmission needs of each station and adjusts RU allocation accordingly. This feedback loop ensures optimal resource allocation while maintaining manageable complexity through centralized control.
Data Source
AI summary
The embodiments of the application provides a resource allocation method. In an example method, a trigger frame is sent by an access point to a station. The trigger frame includes one user information field, and the user information field may indicate a plurality of resource units allocated to the station.