Abstract
Modern applications of Wireless Multimedia Sensor Network (WMSN) demands stringent Quality of Service (QoS) requirements. Multipath routing is a promising solution to accomplish the required level of QoS. Typically, wireless links in WMSN are highly unreliable and unpredictable. The unreliable nature of these links substantially affects the performance of the network. Link quality estimation has been an active area of research in sensor networks for the last few years. This paper presents Energy and ETX aware Multipath Geographic Routing (EEMGR) scheme that reinforces routes with high-quality links. It incorporates adaptive cost function which selects the next hop based on ETX, remaining energy, and distance of the neighboring 1-hop node to the sink. Several node-disjoint routing paths are discovered by EEMGR connecting the source node and the sink node. NetTopo algorithm level simulation results reveal that proposed EEMGR scheme chooses good quality links and improves network lifetime as compared to state-of-the-art Two-phase geographical Greedy Forwarding (TPGF) routing scheme.
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