Abstract
The amount of traffic generated by RTAs has increased substantially over the years. RTA will face congestion where there is any form of bottleneck restricting traffic. This will result in packet loss or delayed traffic which is unacceptable for RTAs. Therefore it is desirable for RTAs to implement congestion control mechanism to improve the stability of networks. TCP Friendly Rate Control (TFRC) is a congestion control algorithm that provides a smooth transmission rate for RTAs. TFRC is a congestion control mechanism for unicast flows operating in a best effort internet environment. It is reasonably fair when competing for bandwidth with TCP flows in congested network, but has a much lower variation of throughput over time compared with TCP. In this work we use NS2, the network simulator for simulation of TFRC. TFRC is simulated in different environments, limitations are identified and modifications are proposed.
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