Low-Overhead Harvest-Then-Transmit in TSCH-Based Wireless Powered Sensor Networks

This paper presents a low-overhead harvest-then-transfer (LoHTT) for time slotted channel hopping (TSCH)- based wireless powered sensor networks (WPSNs). LoHTT aims to reduce the overhead. To this end, LoHTT includes two operations: 1) required cell calculation and 2) cell allocation. The first calculates the number of required power and data cells considering consecutive transmissions of RF signals and data packets. The second allocates a series of power and data cells that use a specific channel. The simulation results showed that LoHTT obtains better channel utilization and aggregate throughput compared to the existing MAC protocol.