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针对能量受限无线传输的可靠性问题,提出一种计算线性传感器网络可靠性的概率表达式。建立包含传输模型、能量模型、链路模型、业务模型的系统模型。推导源节点在能耗基础上的可靠性表达式,考虑链路的情况推导出链路的正常工作概率表达式,综合考虑节点和链路的情况推导出整体传输的可靠性表达式。仿真结果证明,该可靠性表达式能够准确地评估无线传输的可靠性能。
Aiming at the reliability of energy-limited wireless transmission, a probabilistic expression for calculating the reliability of linear sensor networks is proposed. Establish a system model that includes transmission model, energy model, link model and business model. The reliability expression of source node based on energy consumption is deduced. The normal working probability expression of link is deduced considering the link condition. The reliability expression of global transmission is deduced considering the nodes and links. Simulation results show that the reliability expression can accurately evaluate the reliability of wireless transmission.