Transmission Rate Control via Error Correction Packets
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Solution Overview
Problem
Wireless networks experience high packet loss due to limited bandwidth and variable traffic properties, making it difficult to maintain stable real-time data transmission, as conventional methods fail to adequately address temporary packet loss caused by radio link characteristics.
Innovation Solution
A method and apparatus that use error correction packets to predict bandwidth and adjust transmission rates by increasing or decreasing the percentage of error correction packets and transmission rate based on feedback information, distinguishing between temporary and bandwidth-related packet loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transmission rate is reduced to compensate for packet loss, then packet loss is compensated, but real-time data transmission stability deteriorates
Solution Approach 1:
The system sends error correction packets in advance alongside data packets. These error correction packets are prepared and transmitted proactively before packet loss occurs, allowing the receiving end to reconstruct lost packets without requiring transmission rate reduction or retransmission delays
Solution Approach 2:
Error correction packets act as an intermediary mechanism between data packets and the receiving end. Instead of directly retransmitting lost packets or reducing transmission rate, the system uses pre-sent error correction packets as mediators that enable packet reconstruction, thus maintaining both reliability and real-time transmission stability
2Reliability
If error correction packets are increased to compensate for packet loss, then packet loss compensation improves, but network bandwidth consumption increases
Solution Approach 1:
The system dynamically adjusts the ratio of error correction packets to data packets based on network conditions. By changing this parameter adaptively, the system optimizes the balance between packet loss compensation and bandwidth consumption, sending more error correction packets when needed and fewer when network conditions are good
3Reliability
If retransmission is used to compensate for packet loss, then packet loss is compensated, but transmission delay increases
Solution Approach 1:
Error correction packets are sent in advance with the original data packets, eliminating the need for retransmission delays. When packet loss occurs, the receiving end can immediately reconstruct lost packets using the pre-sent error correction packets without waiting for retransmission
Solution Approach 2:
The system skips the retransmission step entirely by using pre-sent error correction packets for direct packet reconstruction at the receiving end, thus rushing through the packet loss compensation process without the time-consuming retransmission cycle
Data Source
AI summary
A method of controlling transmission rate by using error correction packets and a communication apparatus using the same are provided. According to an embodiment of the present invention, the method of controlling transmission rate by using error correction packets includes transmitting a first packet group composed in a predetermined ratio of data packets and error correction packets, transmitting a second packet group composed of the data packets and the error correction packets in a ratio adjusted based on feedback information about the first packet group, and controlling the transmission rate based on the feedback information about the second packet group.