Wireless ad hoc networks are expected to be integrated with wired networks and many applications will operate over TCP/IP (Transmission Control Protocol/ Internet Protocol), so many studies have been dedicated to improving the performance of TCP over ad hoc networks. However, most of these studies assumed a persistent TCP connection. This is clearly inadequate because many TCP connections are actually short-lived. For such short-lived connections, the routing latency in ad hoc networks is considerable. This paper describes a new routing protocol, the Low-latency Hybrid Routing protocol (LHR), that is suitable for a network in which many TCP connections are short-lived. Through simulations, the paper has compared the performance of LHR with that of existing routing protocols.
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