基于QUIC的实时通信优化研究与应用

Research and Application of Real-time Communication Optimization Based on QUIC

实时通信场景主要是在对等连接的情况下进行音视频文件的传输,需要有低时延、高带宽的网络环境.QUIC协议在传输层有着良好的表现,其快速、稳定、安全的特点使其有着广阔的应用前景,但直接将其应用在实时通信场景下也存在着一些缺点.本文通过分析实时通信技术、开源框架WebRTC和传输层协议QUIC的现状,针对QUIC应用在实时通信这一场景下优点和缺点,对QUIC协议进行了改进,使QUIC更适应实时通信场景,并对CUBIC拥塞控制算法进行自适应优化,最后将改进后的QUIC协议进行应用和验证.

The real-time communication scenario is mainly the transmission of audio and video files in the case of peer-to-peer connection,which requires a network environment with low delay and high bandwidth.QUIC protocol has a good performance in the transport layer,and its fast,stable and secure features allow us to see a broad application prospect,but directly applied to the real-time communication scene also has some disadvantages.By analyzing the status quo of real-time communication technology,open source framework WebRTC and transport layer protocol QUIC,and aiming at the advantages and disadvantages of QUIC application in real-time communication scenario,this paper proposes an improvement of QUIC protocol to make it more suitable for real-time communication scenarios,and optimizes the congestion control algorithm,finally,applies and verifies the improved QUIC protocol.