A novel version of Wireless TCP for Vehicular On-Board IP Networks

Network mobility (NeMo) arises when a mobile router connecting a network to the Internet dynamically changes its point of attachment. By taking advantage of this kind of network mobility, Internet services can be extended to users traveling in public transport vehicles having high speed LANs deployed on-board. On-board LANs connect to the Internet via mobile router. Here, two primary issues viz. mobility of the network as a hole and existence of multiple wireless links, give rise to several unique challenges for achieving a high end-to-end TCP throughput. In this paper we propose an approximately modified version of TCP Snoop, called on-board TCP (obTCP) for vehicular on-board IP networks. Its central concern is to shield the sender from non-congestion related losses without changing existing TCP implementation at the end hosts. We have evaluated the performance of obTCP in ns-2 simulator and compared with TCP Snoop