Adaptive Control of Congestion Window in QUIC

The QUIC protocol offers a variety of distinctive features over TCP, which includes rapid handshaking process, zero-RTT capabilities, and connection migration. Among these, the connection migration plays a pivotal role in facilitating mobility for a myriad of mobile devices. However, the current implementation of connection migration necessitates the window size initialization when the IP address changes, such as during handovers. This leads to a decline in throughput performance. In this paper, we introduce an adaptive control of congestion window size when the client undergoes the connection migration due to IP changes. From the experimentation results, we can see that the proposed adaptive congestion control scheme provides significant performance improvement.