QoS-Based Protocol for Routing in Wireless Sensor Networks

A sensor network consists of many sensor nodes scattered throughout a geographic area. The sensor nodes communicate by radio to ensure the network operations and to route the data to the sink. The problem we are interested in this work relates to the optimization of the quality of service (QoS) in wireless sensor networks. In this paper, we proposed a routing protocol adaptive to the QoS at the network layer. Therefore, a variant of the RPAR protocol was proposed and we called: Greedy Realtime Power Aware Routing (GRPAR), to ensure an optimal quality of service. Simulation results showed that GRPAR improves the performance compared to RPAR in terms of end-to-end delay, packets delivery ratio and energy conservation.