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.
On the interactions between TCP Westwood and the AODV routing protocol
GARROPPO, ROSARIO GIUSEPPE;GIORDANO, STEFANO;LUCETTI, STEFANO;TAVANTI, LUCA
2007-01-01
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
