The main theme of this paper is to implement the mobility model in Cooja simulator and to investigate the impact of the mobility on the performance of Routing Protocol over Low power Lossy networks (RPL) in the IoT environment. In the real world, mobility occurs frequently. Therefore in this paper, a frequently used mobility model - Random Way Point (RWP) is used for analysis. RWP can be readily applied to many existing applications. By default, the Cooja simulator does not support mobility models. For this, the Bonn Motion is introduced into Cooja as a plugin. As IoT deals with the resource- constrained environment, a comparison is done between the static environment and the mobile environment in terms of power consumption. As expected, the results indicate that mobility affects the RPL in terms of Power Consumption.

翻译：本文的主旨是在Cooja仿真器中实现移动性模型，并研究移动性对物联网环境中低功耗有损网络路由协议（RPL）性能的影响。在实际场景中，移动性频繁发生。因此，本文采用常用的移动性模型——随机路点（Random Way Point, RWP）模型进行分析。RWP可便捷地应用于众多现有应用。默认情况下，Cooja仿真器不支持移动性模型。为此，我们以插件形式将Bonn Motion引入Cooja。由于物联网处理的是资源受限环境，本文在功耗方面对静态环境与移动环境进行了比较。正如预期，结果表明移动性对RPL的功耗产生了影响。