Communication Device Frame Length Adjustment for Collision Reduction
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Solution Overview
Problem
In wireless local area networks (WLANs) based on the IEEE 802.11 standard, transmission collisions between frames occur frequently, reducing communication efficiency, despite existing techniques like carrier sense methods to avoid collisions.
Innovation Solution
A communication device and method that includes a receiving unit to acquire length information from received frames and a transmission frame deciding unit to adjust the length of transmission frames based on this information, thereby reducing collision frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If carrier sense technique is used to detect transmission before starting to transmit frames, then transmission collision can be partially avoided, but transmission collision still occurs frequently and communication efficiency is lowered
Solution Approach 1:
The patent applies preliminary action by having the terminal acquire length information of frames transmitted by other terminals before the terminal itself transmits a frame. This advance knowledge of frame lengths allows the terminal to pre-calculate appropriate transmission parameters, enabling collision avoidance before the transmission actually occurs, thereby improving both reliability and productivity.
Solution Approach 2:
The patent implements feedback by using the acquired length information from received frames to adjust the terminal's own transmission frame length. The transmission frame deciding unit determines the length of the terminal's transmission frame based on the length information obtained from monitoring other terminals' transmissions, creating a closed-loop system that adapts to real-time channel conditions and reduces collisions.
2Ease of operation
If frame transmission continues without adjusting length based on received frames, then transmission simplicity is maintained, but transmission collision frequency increases
Solution Approach 1:
The patent applies dynamics by making the transmission frame length adjustable rather than fixed. The transmission frame deciding unit dynamically determines the length of the transmission frame based on the length information acquired from received frames, allowing the system to adapt to varying channel conditions and traffic patterns, thereby reducing transmission collisions while maintaining operational simplicity.
Data Source
AI summary
[Object] To reduce the frequency of the occurrence of the transmission collision of frames.[Solution] A communication device, including: a receiving unit configured to receive a frame transmitted by another terminal; a length information acquiring unit configured to acquire length information related to the frame from the received frame; and a transmission frame deciding unit configured to decide a length of a transmission frame on the basis of the acquired length information.