Research on OTA Optimization of Wireless Sensor Networks Based on CSMA/CA Improved Algorithm

Abstract

This paper focuses on the low efficiency of wireless sensor network over-the-air node mirroring update, based on NXP's Jennic development platform, under the standard set by the ZigBee Alliance for Over the Air (OTA), the IEEE 802.15.4 CSMA/CA algorithm is improved. A multi-node synchronous, efficient and reliable remote update scheme for small-scale ZigBee networks was designed and verified on the Jennic JN5168 sensor node. Compared with the original remote update technology, the improved algorithm can increase the network throughput by 0.28, and the network delay is reduced from 0.029seconds to 0.024 seconds, which proves that the scheme is feasible in improving the update efficiency of nodes.