计算机科学 ›› 2012, Vol. 39 ›› Issue (3): 107-109.
• 计算机网络与信息安全 • 上一篇 下一篇
于樊鹏,牛延超
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摘要: 研究对数阴影衰落模型的无线传感器节点间跳数与距离关系的问题。随机部署在圆形区域内的节点位置服从Poisson分布,节点间自组织构成连通网络。借助于对数阴影衰落模型特征和节点分布规律,给出了已知节点间距的跳数概率分布表达式,同时考虑了多跳依赖问题对分布表达式的影响;基于贝叶斯公式,推导出已知跳数信息的距离分布关系,并进行了实验分析与验证。结果表明,理论的推导结论与实验统计结果具有较好的一致性。
关键词: 物联网,无线传感器网络,对数阴影衰落模型,跳数与距离关系
Abstract: This paper presented an analytical method to evaluate the hop-distance relationship for wireless sensor network in a shadow fading envirorunent,where sensor nodes are randomly and independently deployed in a circular region by a Poisson process. Different from the UDG model, the shadow fading model has the non-uniformity property for connectivity. We derived an approximate recursive expression of the probability of the hop count by a given geographic dislance. The multi-hop dependence problem was also taken into consideration. Furthermore, we gave the expressions about the distribution of distance by a known hop count by the Bayer formula .The simulation results show that the analytical expressions can closely agree with the statistical data and the border effects cannot be ignored.
Key words: Internet of things, Wireless sensor networks, Shadow fading model, Hop-distance relationship
于樊鹏,牛延超. 一种物联网框架下传感节点间跳数与距离关系的研究[J]. 计算机科学, 2012, 39(3): 107-109. https://doi.org/
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