Real-time network simulation for large-scale ubiquitous network

在这项研究中，我们开发了一个仿真框架，模拟城市环境中具有真实行人和车辆移动性的移动和泛在网络系统。这使开发人员能够预测和评估这些无处不在的计算和通信能力对行人活动和车辆移动的影响。首先，为了提高无线网络仿真的可扩展性，提出了一种MAC层的抽象方法。为了逼真地模拟城市环境，我们提出了一种能够读取数字地图数据并生成逼真机动性的仿真中间件。使用这些系统，我们可以全面、高效地评估系统的性能和能力。我们还提出了一种方法来有效地减少目标系统验证和性能验证在不同环境设置下所需的穷举测试场景总数

In this research, we have developed a simulation framework that simulates mobile and ubiquitous networking systems with realistic pedestrian and vehicle mobility in urban environment. This allows developers to predict and evaluate the impact of those ubiquitous computing and communication capability on the activities of pedestrians and movement of vehicles. First, we have proposed an abstraction method for the MAC layer to improve scalability of wireless network simulation. In order to model urban environment in a realistic way, we have proposed a simulation middleware that is able to read digital map data and to generate realistic mobility. Using those systems, we can comprehensively and efficiently evaluate the system performance and capabilities. We have also proposed a method to efficiently reduce the total amount of exhaustive test scenarios required for target system validation and performance verification under different environmental settings