Network Coded QUIC Protocol for Real-Time Packet Recovery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing QUIC FEC protocols are insufficient for real-time applications like WebRTC due to high packet loss correlation, where 70% of FEC packets recover nothing, and integration into the network transport layer complicates changes, leading to inefficiencies in error correction.
Innovation Solution
Implementing Network Coded (NC) QUIC protocol techniques that apply network coding to encrypted QUIC packets or reframe QUIC frames into packed frames, generating coded frames with a coefficient vector and feedback, allowing for efficient error correction and packet recovery even with multiple packet losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If single XOR recovery packet approach is used in QUIC FEC protocol, then error correction capability is provided, but packet loss recovery efficiency deteriorates due to high correlation of packet loss resulting in 70% of FEC packets recovering nothing
Solution Approach 1:
The invention segments the single XOR recovery packet approach into multiple independent FEC packets, each capable of recovering different lost packets. Instead of using one comprehensive XOR packet that fails when multiple packets are lost, the system divides the recovery function across multiple specialized FEC packets, where each packet can independently recover specific lost data without being affected by correlation issues.
Solution Approach 2:
The invention changes the parameter of FEC packet structure from a single XOR-based recovery packet to multiple packets with different coding coefficients. By varying the coding parameters and using systematic FEC approaches, the system can recover from multiple packet losses where the single XOR approach fails, thereby improving recovery efficiency while maintaining reliability.
2Reliability
If QUIC FEC protocol is integrated into network transport layer, then error correction is built into the protocol, but adaptability deteriorates making changes to FEC difficult
Solution Approach 1:
The invention introduces dynamic adaptability to the QUIC FEC protocol by enabling the system to adjust FEC parameters, coding schemes, and packet structures based on network conditions. The protocol can dynamically switch between different FEC approaches (such as changing from systematic to non-systematic coding, or adjusting the number of FEC packets) to optimize performance for different application requirements, thereby maintaining both integration and adaptability.
3Productivity
If re-sending earliest outstanding packet approach is used for HTTP traffic, then superior performance is achieved compared to XOR FEC packets, but applicability deteriorates for real-time applications like WebRTC
Solution Approach 1:
The invention creates a universal FEC mechanism that can serve both HTTP traffic and real-time applications like WebRTC. By implementing a multi-functional FEC system that supports both re-sending approaches (earliest outstanding packet re-sending for HTTP and systematic FEC for real-time applications), the protocol achieves superior performance across different application types without being limited to a single use case.
Data Source
AI summary
A method comprising reframing one or more QUIC frames into a packed frame; and applying network coding to the packed frame to generate a coded frame.