Fixed-rate layered multicast congestion control

Bing Zhang; Bing Yuan; Zengji Liu

doi:10.1117/12.686626

2 October 2006 Fixed-rate layered multicast congestion control

Bing Zhang, Bing Yuan, Zengji Liu

Proceedings Volume 6387, Next-Generation Communication and Sensor Networks 2006; 63870N (2006) https://doi.org/10.1117/12.686626
Event: Optics East 2006, 2006, Boston, Massachusetts, United States

Abstract

A new fixed-rate layered multicast congestion control algorithm called FLMCC is proposed. The sender of a multicast session transmits data packets at a fixed rate on each layer, while receivers each obtain different throughput by cumulatively subscribing to deferent number of layers based on their expected rates. In order to provide TCP-friendliness and estimate the expected rate accurately, a window-based mechanism implemented at receivers is presented. To achieve this, each receiver maintains a congestion window, adjusts it based on the GAIMD algorithm, and from the congestion window an expected rate is calculated. To measure RTT, a new method is presented which combines an accurate measurement with a rough estimation. A feedback suppression based on a random timer mechanism is given to avoid feedback implosion in the accurate measurement. The protocol is simple in its implementation. Simulations indicate that FLMCC shows good TCP-friendliness, responsiveness as well as intra-protocol fairness, and provides high link utilization.

Citation Download Citation

Bing Zhang, Bing Yuan, and Zengji Liu "Fixed-rate layered multicast congestion control", Proc. SPIE 6387, Next-Generation Communication and Sensor Networks 2006, 63870N (2 October 2006); https://doi.org/10.1117/12.686626

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