LL-MCLMAC:A low latency multi channel MAC protocol for Wireless Sensor Networks

Schedule based MAC protocols have been proposed to meet the energy constraint of Wireless Sensor Neworks (WSNs). Although existing schedule based MAC protocols such as LMAC and MC-LMAC are energy efficient, they introduce significant end-to-end delivery latency as well as low network throughput. In this paper, a low latency multichannel LMAC protocol, LL-MCLMAC protocol, is presented for WSNs which proposes the solutions of end-to-end delivery latency as well as throughput by allowing a node to send its packet using a channel from multiple channels over two different timeslots in a frame. The effectiveness of the proposed approach is demonstrated through simulations in terms of performance parameters such as number of received packets, end-to-end delay, and energy consumption. Simulation results show that LL-MCLMAC achieves significant improvement in end-to-end delay and network throughput over existing LMAC and MC-LMAC protocols while ensuring an energy-efficient operation.