An Energy-Efficient FEC Scheme for Weakly Hard Real-Time Communications in Wireless Networks

Key issue in wireless real-time communications is to meet the real-time constraint with low energy consumption. In this paper, we propose an energy-efficient error correcting scheme for weakly hard real-time communications in wireless networks. A weakly hard read-time communication should send at least m messages during any window of k periods. The proposed scheme adaptively selects an error correcting code under the current communication status in order to meet the (m, k)-constraint and minimize the energy consumption. Simulation results show that the suggested scheme provides better performance in terms of the (m, k)- constraint meeting rate per unit energy consumption.