A Context Aware Vertical Handover Algorithm for Vehicular Communication
A Context Aware Vertical Handover Algorithm for Vehicular Communication
复制标题
一种用于车辆通信的上下文感知垂直切换算法
DOI：
10.1109/wiopt.2007.4480068
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
S. Dhar
中科院分区：
文献类型：
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作者：
S. Dhar
“始终最佳连接”通信是智能交通系统（ITS）的主要要求，它是4G的一个子集，以确保车辆安全。下一代通信的特征在于异构无线电接入网络。具有很大不同特性的接入技术的异构共存产生了在特定时刻确定最佳可用网络的决策问题。提出了一种基于上下文感知的车载通信垂直切换算法。算法开发采用AHP（层次分析法）-TOPSIS（逼近理想解排序法）相结合的方法，并以MATLAB/SIMULINK为仿真平台。动态因素，如接收信号强度，和车辆的速度，静态因素，如连接建立的初始延迟，服务成本和用户偏好的应用程序。灵敏度分析是为了证明算法的设计。该算法是特定于车辆通信系统，因此在不同的车辆速度的网络选择的变化。
Always best connected" communication is the principal requirement for Intelligent Transportation System (ITS), which is a subset of 4G, to ensure vehicular safety. The next generation communication is characterized by heterogeneous radio access networks. The heterogeneous co-existence of access technologies with largely different characteristics creates a decision problem for determining best available network at a particular instant of time. A context aware vertical handover algorithm for vehicular communication is presented here. Integrated AHP (Analytic Hierarchy Process)-TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) method is used for the development of algorithm and MATLAB/SIMULINK is used as simulation platform. Dynamic factors like received signal strength, and speed of the vehicle, static factors like initial delay for connection establishment, cost of service and user preference of application are considered. Sensitivity analysis is done to justify the design of the algorithm. This algorithm is specific to vehicular communication system and hence variation in network selection at different vehicle speed is shown.