HE-PRMAC: Hop Extended Pipelined Routing Enhanced MAC Protocol for Wireless Sensor Networks

In this paper, we present a MAC protocol called Hop Extended Pipelined Routing MAC (HE-PRMAC) that enables a node to send a data packet for multiple hops in a single duty cycle similar to PR-MAC and has the ability to handle traffic overhead in an efficient way. HE-PRMAC addresses delivery latency and throughput degradation in wireless sensor networks (WSNs) using hop extended mechanism and a new message, i.e., RTR message. The main goal of this research is to reduce the overhead and latency compared to R-MAC and PR-MAC. We evaluate the performance of our protocol using ns-2 simulations. As compared to R-MAC and PR-MAC, HE-PRMAC shows 22.1% less power consumption and 13.6% less packet latency on average for 250 nodes in chain, cross, and real scenario.