Multicast of Multimedia Data

Multicast of Multimedia Data

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: 7
DOI: 10.4018/978-1-59140-993-9.ch045

Abstract

The heterogeneous network environment that Internet provides to real time applications as well as the lack of sufficient QoS (Quality of Service) guarantees, many times forces applications to embody adaptation schemes in order to work efficiently. In addition, any application that transmits data over the Internet should have a friendly behaviour towards the other flows that coexist in today’s Internet and especially towards the TCP flows that comprise the majority of flows. We define as TCP friendly flow, a flow that consumes no more bandwidth than a TCP connection, which is traversing the same path with that flow (Pandhye 1999).

Key Terms in this Chapter

Layered Encoding: Transmission of the multimedia data in n different layers the basic layer and n-1 additional layers.

Multimedia Data: Multimedia data refers to data that consist of various media types like text, audio, video, and animation.

Simulcast: Transmission of the same multimedia data in multiple multicast streams with different transmission rates.

Quality of Service (QoS): Quality of service refers to the capability of a network to provide better service to selected network traffic.

RTP/RTCP: Protocol that is used for the transmission of multimedia data. The RTP performs the actual transmission and the RTCP is the control and monitoring transmission.

Multicast: Transmitting data simultaneously to many receivers without the need to replicate the data.

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