Abstract: A Mobile Ad hoc NETwork (MANET) is a collection of wireless mobile computers forming a temporary network without any existing wire line infrastructure. Due to the dynamic nature of the network topology and the resource constraints, routing in MANETs is a challenging task. Multipath routing can increase end-to-end throughput and provide load balancing in wired networks. However, its advantage is not obvious in MANETs because the traffic along the multiple paths will interfere with each other. In this paper, we propose the path selection criteria and an on-demand multipath calculation method. We also perform a simulation study on the proposed on-demand multipath routing in MANETs. Results show that the multipath routing can evenly distribute the network load. This feature is important to protect a node from heavy tasks and power depletion.
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