Loop-based Source Routing Protocol for Mobile Ad-hoc Networks

H. Unoki and H. Higaki (Japan)


adhoc networks, routing protocol, uni-directional links


In an ad-hoc network, a routing protocol which detects a transmission route from a source mobile computer to a des tination one is critical due to mobility and limited battery capacity of computers. Here, a communication link be tween two mobile computers is not always bi-directional since transmission power of mobile computers is not al ways the same. Though some ad-hoc routing protocols, e.g. DSR, support routing with uni-directional links, multiple independent floodings (successive broadcasting) are used and communication overhead is high. This paper proposes a novel routing protocol LBSR supporting uni-directional links and based on combination of a single flooding and unicast message transmissions. According to simulation re sults, LBSR requires much messages than DSR. However, due to combination of a flooding and unicasts, much routes are detected and cached. Thus, communication overhead for each route is reduced.

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