Wi-Fi Frame Length Adjustment for Synchronized Multi-Connection Transmission
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Solution Overview
Problem
In Wi-Fi communication systems utilizing multiple transmission connections with different random backoff parameters, synchronization of data frame arrival times across these connections is challenging, leading to inefficient utilization of frequency spectrum.
Innovation Solution
Adjusting the frame length of message frames based on the maximum random backoff parameter across multiple transmission connections to synchronize the arrival times of data frames at the receiving end, using techniques such as adding bits to the frame length or adjusting the duration field in RTS/CTS mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple transmission connections with different random backoff parameters are used, then transmission diversity and reliability are improved, but synchronization of data frame arrival times deteriorates
Solution Approach 1:
The patent adjusts the frame length parameter of message frames based on random backoff parameters to compensate for timing differences. By dynamically changing the frame length parameter, the system ensures that data frames from multiple transmission connections with different random backoff parameters arrive simultaneously at the receiving end, thus maintaining synchronization precision while utilizing transmission diversity for improved reliability
Solution Approach 2:
The patent performs preliminary calculation and adjustment of frame lengths before actual data transmission. The receiving end calculates the required frame length adjustments based on random backoff parameters in advance, and the transmitting end prepares message frames with adjusted lengths accordingly. This preliminary action ensures that synchronization is achieved without requiring complex real-time coordination during transmission
2Manufacturing precision
If frame length is adjusted based on maximum random backoff parameter, then synchronization of data frame arrival is improved, but transmission efficiency may deteriorate
Solution Approach 1:
The patent applies different frame length adjustments to different transmission connections based on their specific random backoff parameters. Instead of uniformly increasing all frame lengths, the system selectively adjusts only the necessary portions of message frames for each transmission connection. This localized adjustment approach maintains synchronization precision while minimizing the impact on overall transmission efficiency
Data Source
AI summary
A data transmission method and a communication device are provided. Regarding the synchronization transmission of a plurality of transmission connections, in response to at least two of the plurality of transmission connections having different random backoff parameters, a frame length of a message frame transmitted by each transmission connection is determined based on a maximum random backoff parameter of the plurality of transmission connections.