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Extending the Real Rime Congestion Control Mechanism for Multicast Applications over 3G Wireless Networks

Author(s): Neetu Sharma | Amit Sharma | Vijay Singh Rathore | D.K Mishra

Journal: World of Computer Science and Information Technology Journal
ISSN 2221-0741

Volume: 1;
Issue: 5;
Start page: 202;
Date: 2011;
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Keywords: GECM | ROTT | Congestion | ECN | TFMCC | TFRC | RBRC.

In this paper we introduce a real time congestion control mechanism to multicast the multimedia applications. The key challenge in the design of this mechanism is to calculate the rate of feedback messages by various receivers; appropriate feed back suppression, scalable round trip time measurements & ensuring that feedback delays in the control loop do not adversely affect fairness towards competing flows. Major contributions are the feedback mechanism and provide an end-to-end multicast congestion control schemes. We improve the well-known approach for multicasting, by using exponentially weighted random timers by biasing feedback for low-rate receiver and preventing the response implosion. We evaluate the design using simulation and demonstrate the results for multicast transmission of multimedia data.

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