Abstract
In MANETs, link failures are caused frequently due to node's mobility and use of unreliable wireless channels for data transmission. Multipath routing strategy can cope with the problem of the traffic overloads while balancing the network resource consumption. This article proposes an improved approach named DNDR (Dual Node-Disjoint Paths Routing) to enhance the network reliability and robustness. The scheme combines the characteristics of reversing AODV (R-AODV) strategy and On-Demand Node-Disjoint Multipath Routing protocol to determine available node-disjoint routes with minimum routing control overhead, meanwhile, it adds the backup routing strategy to make the process of data salvation more efficient in case of link failure. The results obtained through various simulations show the effectiveness of the proposed scheme in terms of route availability, control overhead and packet delivery ratio.
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