Uplink A-MPDU Frame Padding for Wireless Throughput Optimization
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Solution Overview
Problem
Existing wireless communication systems face challenges in minimizing uplink traffic between access points and multiple user terminals, particularly in achieving high data throughput with limited communication resources.
Innovation Solution
The method involves receiving a trigger frame indicating a target transmission duration at a user terminal, generating an aggregated MAC packet data unit (A-MPDU) frame, determining if additional subframes are needed, and including padding subframes to match the target transmission duration, thereby optimizing the transmission of physical layer service data units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple terminals send uplink communications to the access point simultaneously, then data throughput is improved, but traffic congestion and interference increase
Solution Approach 1:
The patent segments the uplink transmission process into distinct phases: a first set of terminals transmits during a first time period, then a second set of terminals transmits during a second time period. This temporal segmentation allows multiple terminals to share the uplink channel without simultaneous transmission, reducing interference and traffic congestion while maintaining high overall throughput.
2Productivity
If the transmission duration is extended to accommodate more data, then data throughput is improved, but power consumption and interference increase
Solution Approach 1:
The patent implements periodic action by dividing the transmission into multiple time periods with different terminal groups. Each terminal transmits during its assigned time period rather than continuously, which reduces overall power consumption while maintaining high throughput through efficient resource utilization across the network.
3Productivity
If more A-MPDU subframes are added to the frame, then data throughput is improved, but the frame length exceeds the target transmission duration causing synchronization issues
Solution Approach 1:
The patent dynamically adjusts the number of A-MPDU subframes in each terminal's transmission based on the target transmission duration. The system determines whether to include additional subframes by comparing the current frame length against the target duration, ensuring that transmissions remain synchronized while maximizing data throughput within the allocated time period.
Data Source
AI summary
The disclosure provides methods and apparatuses for multiple user uplink. One aspect of the disclosure provides a method for wireless communication. The method comprises receiving a trigger frame from an access point indicating a target transmission duration for transmission of a physical layer (PHY) service data unit (PSDU) to the access point. The method also comprises generating an aggregated medium access control (MAC) packet data unit (A-MPDU) frame comprising at least one A-MPDU subframe, the A-MPDU frame having a first length, determining whether an additional A-MPDU subframe having a second length may be added to the A-MPDU frame based at least in part on the first length, the second length, and the target transmission duration, and including one or more padding subframes in the A-MPDU frame based at least in part on a comparison between the first length and the target transmission duration.