Design of Lightweight Multi Inertial Node Communication Protocol Based on Wearable WBSN

In the mobile ad-hoc wearable wireless sensor network, the communication protocol is used to maintain the real-time, reliability and synchronization accuracy of data. This mobile ad-hoc network adopts a point-to-point star network structure, which is divided into three levels: sensor nodes, convergence nodes - coordinator, and mobile terminals. In order to solve the problem of data congestion and low synchronization efficiency in multi-inertial sensor nodes, an autonomous communication protocol based on FreeRTOS is designed and implemented. On this basis, through the improved time synchronization algorithm based on TPSN, the synchronization delay of multi-inertial sensor nodes is controlled within 5ms to further ensure the same frequency of data processing between master coordinator and slave nodes.