【摘要】 无线传感器网络基础设施理论与技术是无线传感器网络中一项基础却又十分重要的研究内容。由于网络自组织性与不同应用环境的要求,导致无线传感器网络基础设施具有十分明显和复杂的动态变化特征,而如何认识并描述其动态变化规律却是一个难点问题。本文针对动态无线传感器网络,提出一种新型基础设施模型。在此模型基础上采用平均场与连续分析方法进行理论分析,最终得到该模型所描述的动态无线传感器网络基础设施平均节点度变化规律。通过对网络节点度变化和平均路径长度两个可反映动态拓扑特征的参数进行模型性能评价,仿真结果证明了模型的有效性、可用性和准确性。更多还原

【Abstract】 One of the most fundamental problems in wireless sensor networks(WSN) is the theories and techniques of wireless sensor network infrastructures.Due to the self-organizing topology and the requirements of different applications,wireless sensor network infrastructures have obvious and complex dynamics characters.To describe their dynamics laws,this paper proposes a novel model for dynamic wireless sensor network infrastructures.Based on this model,we obtain the average connectivity results used methods from the mean-field and continuum theory.To evaluate the performance of the analytical model,we gave the comparison results of the degree and average path length which are two typical topology property parameters.Simulation results show that the proposed analytical model is considerably effective,practicable and precise.更多还原