Investigation of TCP Traffic in a Vehicular Ad-hoc Network Considering DYMO Routing Protocol

Vehicular Ad-hoc Networks (VANETs) represent a rapidly emerging, particularly challenging class of Mobile Ad-hoc Networks (MANETs). VANETs are expected to be massively deployed in upcoming vehicles, because their use can improve the safety of driving and makes new forms of inter-vehicle communications possible as well. Because they are characterized of high mobility and dynamic topology change, congestion control should be performed in such networks. In this paper, we analyze the TCP traffic in a VANET. We investigate and compare the Good put of DYMO Protocol for TCP Vegas and TCP New Reno considering also the congestion window, slow-start threshold and sequence number versus time. The simulation results show that in this VANET scenario, TCP New Reno performs better than TCP Vegas.