This article presents an integrated modeling method which can provide superior quality of service (QoS) for wireless sensor networks (WSNs) suitable for smart distribution grid (SDG) communication. The existing QoS model which is based on IEEE 802.15.4 protocol cannot meet the communication time requirements of multi-type communication data. An enhanced QoS medium access control model based on unfair competition channel access mechanism is built, in order to conform with power system communication specification. The model can guarantee that the communication system of WSNs provides different qualities of service for different types of communication data. According to different requirements of the communication time for SDG data, the communication data of SDG are divided into three types: high priority, middle priority and low priority. State transition of buffer queues data in nodes is described by a three-dimensional Markov chain model. Delay time mode, channel collision model, and effective throughput rate mode of network data are developed respectively to analyze WSN performance of SDG communication. The analysis and simulation results show that the model proposed in this paper can provide effective QoS for monitoring and communication of SDG.
Wireless Personal Communications – Springer Journals
Published: Mar 24, 2017
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