Access Point Simultaneous Transmission Coordination
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Solution Overview
Problem
Current wireless local area network (WLAN) technologies face challenges in efficiently managing simultaneous data transmission from multiple client stations to an access point, particularly in coordinating transmit opportunity periods (TXOP) to optimize data throughput.
Innovation Solution
The method involves determining if multiple client stations have data to transmit and prompting them to send independent data streams simultaneously during a TXOP, using techniques such as spatial division multiple access (SDMA) and orthogonal frequency division multiplexing (OFDM) to coordinate transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple client stations transmit data simultaneously during a TXOP, then data throughput is improved, but coordination complexity increases
Solution Approach 1:
The access point acts as an intermediary that coordinates simultaneous transmissions by sending a poll frame to multiple client stations, allocating specific resource units and transmission parameters to each station, thereby managing the complexity of coordinating multiple simultaneous transmissions
2Productivity
If transmit opportunity periods are coordinated for multiple stations, then network efficiency is improved, but management complexity increases
Solution Approach 1:
The access point performs preliminary actions by sending a poll frame before the actual data transmission, where it pre-allocates resource units, determines which client stations have data to transmit, and establishes the transmission parameters in advance, thereby simplifying the subsequent simultaneous transmission process
Data Source
AI summary
A first communication device determines that each second communication device in a plurality of second communication devices has respective data to be transmitted to the first communication device. The first communication device transmits a request to the plurality of second communication devices to transmit data to the first communication device simultaneously during a transmit opportunity period of the first communication device. The first communication device receives data transmitted simultaneously by the plurality of second communication devices during the transmit opportunity period of the first communication device.