Energy-aware optimal slot allocation scheme for wearable sensors in first responder monitoring system

In recent advances in first response techniques, the uniform of each first responder working in the emergency field may be equipped with sensors and a gateway. These wearable sensors in conjunction with the gateway constitute a first responder monitoring system (FRMS). FRMS gathers data about the first responders vitals and the surrounding environment, which is then transmitted to the incident commander. For the energy-constrained nature of the FRMS, an energy-efficient slot allocation scheme is proposed. The energy-efficient scheme involves the design of an optimal slot allocation scheme based on Hungarian algorithm for sensor data collection and an energy-aware sensing and transmission scheme for sensor nodes. Simulation results demonstrate the superiority of proposed scheme in terms of lifetime, residual energy, and energy-delay product as compared to greedy and first-in-first-out (FIFO) slot allocation schemes.