Localized disjoint multipath routing protocol in irregular wireless sensor networks

Disjoint multipath routing is an attractive approach for improving the reliability of data delivery in wireless sensor networks. Recently, the issue for maintaining the robustness and efficiency of the disjoint multipath routing against network failures such as network holes are being studied. Several protocols have been proposed to handle the network failures. However, they cause the large performance degradation on data delivery ratio and delay due to its centralized manner for detouring the network holes in irregular network environments. Thus, we propose a Localized Disjoint Multipath Routing protocol called LDMR which can achieve reliable data delivery ratio and stable data delivery delay while handling network failures. LDMR constructs the fully disjoint multipath and manages them by using a localized management method with a path priority rule. Simulation results show that our protocol provides the more stable and reliable performance than the previous protocols in terms of packet delivery ratio and packet delivery delay.