Performance Evaluation of Modified TCP Congestion Control Algorithm Under Different Data Rates Environment
Keywords:
TCP-W, WAHN, utilization, Network Simulator (NS 2), demonstrated, WestwoodAbstract
Wireless Ad Hoc Networks (WAHNs) provide a flexible and dynamic communication infrastructure, making them ideal for situations where traditional wired networks are impractical. However, WAHNs present unique challenges for the Transmission Control Protocol (TCP), primarily due to their dynamic topologies, varying link qualities, and limited bandwidth. Traditional TCP congestion control algorithms often underperform in WAHN environments, leading to suboptimal throughput, increased latency, and inefficient resource utilization.
To improve performance, two approaches have been proposed: a congestion management technique where the congestion window's size is modified at the time of retransmission, and the other technique is from active queue management technique where modification in the algorithm of Random Early Detection protocol is applied. Simulation-based comparative analysis of the original TCP Westwood protocol and modified TCP Westwood is being conducted, assessing key metrics parameters such as packet delivery throughput, ratio of packet dropping, goodput, and total latency.
The Modified TCP-W and modified RED protocols have demonstrated improvements in both throughput and goodput while maintaining stable performance in terms of total latency and packet drop correlation. The proposed congestion control enhancements will be thoroughly evaluated through extensive simulations using Network Simulator (NS 2) software experiments in diverse WAHN scenarios.
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