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无线传感器网络一般具有实时性,其端到端通信性能上界研究具有重要意义.基于确定性网络演算理论,对无线传感器网络为保证实时数据优先的数据转发调度策略进行了性能分析与评价.建立了基于确定性网络演算的端到端通信性能分析模型,经过理论分析得到了无线传感器网络节点的数据队列上界、端到端数据流的延迟上界以及端到端数据流的延迟抖动上界.仿真结果表明基于网络演算理论的无线传感器网络性能上界均在理论计算的上界范围之内.本文的研究使得对无线传感器网络通信性能的研究更符合完备性的要求.
The research on the upper bound of end-to-end communication performance is of great significance in wireless sensor networks.According to deterministic network calculus theory, the performance of wireless sensor networks (WSNs) is analyzed and evaluated in order to ensure real-time data prioritization. After analyzing the end-to-end communication performance analysis model based on deterministic network calculus, the upper bound of data queue, the upper bound of end-to-end data flow and the upper bound of delay jitter of end-to-end data stream are obtained through theoretical analysis. The simulation results show that the upper bound of performance of wireless sensor networks based on network calculus theory is within the upper bound of theoretical calculation.The research in this paper makes the research on the communication performance of wireless sensor networks more in line with the requirements of completeness.