TCP westwood: end-to-end congestion control for wired/wireless networks
Wireless Networks
Experimental Evaluation of TCP Performance in Multi-Hop Wireless Ad Hoc Networks
MASCOTS '04 Proceedings of the The IEEE Computer Society's 12th Annual International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunications Systems
Evaluating the communication performance of an ad hoc wireless network
IEEE Transactions on Wireless Communications
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The paper presents an experimental analysis of the performance of TCP Westwood in AODV-routed ad hoc networks. Several tests have been carried out in both emulated and real environments, with varying network topologies, routing protocol settings and channel quality levels. As expected, TCP is deeply influenced by the settings of the routing protocol and the fluctuations in the signal to noise ratio. However, the results also reveal a quite novel aspect: AODV and TCP perceive the radio link quality in different ways and this effect is further enhanced by the presence of network interface cards based on the IEEE 802.11 standard. This aspect leads to some performance anomalies that are shown in the paper.