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引用次数: 1
摘要
本文针对无线传感器网络空中节点镜像更新效率低的问题，基于恩智浦的Jennic开发平台，在ZigBee联盟制定的OTA (Over the Air)标准下，对IEEE 802.15.4 CSMA/CA算法进行了改进。设计了一种适用于小型ZigBee网络的多节点同步、高效、可靠的远程更新方案，并在Jennic JN5168传感器节点上进行了验证。与原有的远程更新技术相比，改进后的算法可使网络吞吐量提高0.28，网络延迟从0.029秒降低到0.024秒，证明该方案在提高节点更新效率方面是可行的。
Research on OTA Optimization of Wireless Sensor Networks Based on CSMA/CA Improved Algorithm
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.
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