Delay jitter is defined to be the mean deviation (smoothed absolute value) of the difference in packet spacing at the receiver compared to the sender for a pair of packets.
Published in Chapter:
Real-Time Protocols (RTP/RTCP)
Christos Bouras (Research Academic Computer Technology Institute and University of Patras, Greece), Apostolos Gkamas (Research Academic Computer Technology Institute and University of Patras, Greece), Dimitris Primpas (Research Academic Computer Technology Institute and University of Patras, Greece), and Kostas Stamos (Research Academic Computer Technology Institute and University of Patras, Greece)
Copyright: © 2008
|Pages: 6
DOI: 10.4018/978-1-59140-993-9.ch065
Abstract
Real-time protocols cover specific needs by applications with real-time characteristics. Real-time applications, such as voice over IP (VoIP), videoconferencing applications, video on demand, continuous data applications, and control and measurement applications have specific requirements from the lower layers, mainly in terms of packet loss, delay, and jitter. Traditional transport protocols such as TCP and UDP have been designed for general use and are not specialized for such specific purposes. In particular, real-time protocols have to be able to deliver high throughput, handle multicast, manage the transmission quality, and be friendly to the rest of the traffic, and, more importantly, to the congestion-sensitive TCP traffic.