Wireless Packet PFCS Segmentation to Reduce Retransmissions
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Solution Overview
Problem
Conventional wireless transmission methods suffer from low efficiency due to incomplete utilization of data frames and increased reception time periods caused by frame check sequences placed at the end of frames, leading to frequent retransmissions when errors occur.
Innovation Solution
Implementing a partial frame check sequence (PFCS) in wireless transmission, allowing for the transmission and retransmission of packets without immediate acknowledgement (ACK) messages, enabling the reception device to combine partial packets into complete frames, thereby reducing retransmissions and channel contention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the frame check sequence (FCS) is placed at the end of the frame to ensure correct frame content, then the reception device can verify transmission success, but the reception time period increases and wireless transmission efficiency decreases
Solution Approach 1:
The patent divides the FCS into multiple partial frame check sequences (PFCS) that are distributed at different positions within the frame rather than placing the complete FCS at the end. This segmentation allows the reception device to perform incremental verification during the reception process, reducing the total reception time while maintaining reliability through distributed check points.
2Reliability
If the complete FCS is placed at the end of the frame, then transmission success can be verified, but the whole packet cannot be utilized when errors occur during transmission
Solution Approach 1:
By segmenting the FCS into multiple partial check sequences distributed throughout the frame, the patent enables the reception device to identify and report errors at specific locations. This allows for targeted retransmission of only the affected portions rather than requiring complete packet retransmission, thereby improving transmission efficiency while maintaining verification capability.
Solution Approach 2:
The patent implements partial frame check sequences that provide sufficient verification capability without requiring the complete FCS to be transmitted at the end. This partial action approach maintains reliable error detection while reducing the overhead and improving overall transmission efficiency.
3Adaptability or versatility
If more functions are supported in the beacon frame, then the frame length increases, but the reception time period of the reception device increases
Solution Approach 1:
The patent applies segmentation to the FCS verification process, allowing the reception device to verify beacon frame content incrementally as it receives the frame. This enables the device to understand and process beacon functions without waiting for the complete frame to be received and verified, thereby reducing the effective reception time period while supporting multiple functions.
Data Source
AI summary
A wireless transmission method, for a wireless communication network having a transmission device and a reception device, wherein the wireless transmission method includes transmitting, by the transmission device, a first packet including at least a partial frame check sequence (PFCS) and retransmitting the first packet to the reception device; and combining, by the transmission device, the first packet and the first packet retransmitted by the transmission device as a complete packet; wherein no acknowledgement (ACK) message exists in a time sequence between the first packet, transmitted by the transmission device and the retransmitted first packet.