Abstract
In this paper a new method, Optimal Path from Source to Sink Node (OPSSN), is proposed for achieving the Quality of Service (QoS) in terms of packet delivery reliability and better energy consumption in Wireless Sensor Networks (WSN). Routing in WSN has more expected node failures than the traditional networks; so to establish a routing protocol which supports QoS in WSN, requires considering the reasons for node failure to improve network performance. In case of failure (node failure or link failure), this method will offer automatic adaptation to dynamic linking and low processing overhead by choosing the default path through intensive nodes. This method increases the number of spare neighbors for original nodes which are preserved for data transmission through them, to be used in case of failure. This algorithm is simulated using MATLAB. Results showed that OPSSN achieved better performance compared to LEACH in terms of network life time, packets received at Base Station (BS), number of Cluster Heads (CH) per round, and total energy consumption.
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