Abstract
ZigBee provides a simple and reliable solution for the advanced measuring infrastructures. However, the current routing algorithms cannot fully satisfy the requirements of the application, and the characteristics of the node deployment and the data flows should be more considered. In this paper, we propose a minimum physical distance (MPD) delivery protocol based on the ZigBee specification in the smart grid to optimize the transmission of the monitoring and command packets which are from or to the ZigBee coordinator (ZC). The physical depth, which is introduced to indicate the least hops to the ZC, and the transmission paths are decided based on the neighbour table information. The simulation results show that the MPD could improve the performance of the monitoring and controlling packet transmission, it provided high reliability and short paths, the bits sent by the devices except the coordinator were reduced and the end-to-end delay was also shortened.
Highlights
Smart grid is characterized by two-way flow of power in electrical network, and information in communication network to increase energy efficiency, transition to renewable energy sources, reduce greenhouse gas emissions, and build a sustainable economy that ensures prosperity for current and future generations [1,2,3]
We introduce the concept of the physical depth (PD), which is defined as the minimum hop counts to the ZigBee coordinator (ZC)
We could see that the minimum physical distance (MPD) could significantly reduce the network throughput in our simulations
Summary
ZigBee technology is characterized by low cost, low power, low data rate, and simplicity [8] These features, along with its operating over unlicensed spectrum and being a standardized protocol based on IEEE 802.15.4 standards, facilitate easy network deployment and implementation, and make it the most suitable wireless technology for smart grid applications [9]. The transmission cost (e.g. hops) via each neighbour device is estimated and compared to improve the routing path It has a better performance with less power consumption per packet transfer and a long life cycle. This algorithm is based on the two-hop neighbour information and it may lead to severe energy and memory overhead in ZigBee networks. We compare our method with other popular routing algorithms in the ZigBee network to evaluate the performance objectively
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