一种基于城市机会网络的网络服务模型及定位算法

A Network Service Model and Localization Algorithm Based on Opportunistic Network of City

提出了一种在城市道路场景下应用的互联网访问服务模型。不同于传统接入方式,该模型不要求用户与互联网接入点建立直接连接,它允许用户通过城市中的机会网络间接地访问互联网。同时还提出了一种应用于该模型的定位算法。经过仿真分析,证明该算法可以在保证网络服务质量的基础上减少接入点数目并降低网络数据冗余。仿真结果还表明无线网络接入点的选取与网络中节点的数目对算法性能有显著影响。

This paper presents a network service model based on urban roads scene. Different from traditional direct access methods, the model allows users to access the Internet indirectly by the opportunistic network in city. This paper also presents a localization algorithm based on this model.Performance evaluation shows that this algorithm can reduce the number of access points and the data redundancy in the systemwith an acceptable service performance. The result also shows the location of wireless network access point and the amount of nodes in the scene have significant impact on localization algorithm.