Wavelet Analysis of Packet Loss in Video Transfers over UDP.
Fei Xue, Velibor Markovski, Ljiljana Trajković · 2000
Understanding packet loss patterns in IP networks is important for achieving the desired quality of service in multimedia transfers. In this paper, we study the loss patterns in video transfers over UDP in a congested packet network. We use wavelet analysis to investigate the behavior of packet loss on various time-scales. We show that time scales are essential for understanding loss behavior and that packet loss exhibits long-range dependence over the coarser time scales. Keywords: Packet loss, user datagram protocol, video transfer, long range dependence, wavelets, time scales. 1 Introduction High quality multimedia applications in IP (Internet Protocol) networks have stringent requirements in terms of packet loss, delay, and delay jitter. In IP networks, loss characteristics impact the quality of the established video and/or voice connections, and affect the throughput of bulk data transfers. These loss characteristics cannot be captured by specifying only the loss probability, b...