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The Effect of Feedback Path Congestion on the Multimedia Congestion Control Algorithm  

Jung Gi Sung (숭실대학교 정보통신전자공학부)
Hong Min-cheol (숭실대학교 정보통신전자공학부)
Yoo Myungsik (숭실대학교 정보통신전자공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.7B, 2005 , pp. 481-488 More about this Journal
Abstract
As the demand on the multimedia application increases, the congestion control algorithm for the multimedia applications becomes an important research issue. The ultimate goal of congestion control is to adapt the trans-mission rate at the sender to the mont of network resource available on the forward path. In general, the congestion control algorithms use the round trip time(RTT) to estimate the network congestion on the forward path. however, since the RTT includes the delay on both forward and backward paths, it is possible for the algorithms using the RTT to make a wrong decision such as deciding the congestion on the forward path due to the congestion built on the backward path. In this paper, we enhance the performance of RRC-OTT(Receiver-based rate control with one-way Trip Time) algorithm, which uses the one-way trip time(OTT) to estimate the network congestion. By separating the estimation mechanism on the forward path from the backward path, the performance of RRC-OTT algorithm is hardly affected by the congestion built on the backward path.
Keywords
Multimedia QoS; Congestion Control; RTT; OTT; Feedback Path Congestion;
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