Proceedings of International Conference on Applied Innovation in IT
2013/03/25, Volume 1, Issue 1, pp.31-34

Influence of Jitter on Reliable Multicast Data Transmission Rate in Terms of CDN Networks

Aleksandr Bakharev, Eduard Siemens

Abstract: This paper devotes to evaluation of performance bottlenecks and algorithm deficiencies in the area of contemporary reliable multicast networking. Hereby, the impact of packet delay jitter on the end-to-end performance of multicast IP data transport is investigated. A series of tests with two most significant open-source implementations of reliable multicast is performed and analyzed. These are: UDPbased File Transfer Protocol (UFTP) and NACK-oriented Reliable multicast (NORM). Tests were targeted to simulate scenario of content distribution in WAN  sized Content Delivery Networks (CDN). Then, results were grouped and averaged, by round trip time and packet losses. This enabled us to see jitter influence independently on round trip time (RTT) and packet loss rates. Revealed jitter influence for different network conditions. Confirmed, that appearance of even small jitter causes significant data rate reduction.

Keywords: jitter, reliable multicast, CDN

DOI: 10.13142/kt10001.05

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