A novel mobility model based on semi-random circular movement in mobile ad hoc networks

  • Authors:

  • Wei Wang;Xiaohong Guan;Beizhan Wang;Yaping Wang

  • Affiliations:

  • Ministry of Education Key Laboratory for Intelligent Network and Network Security, State Key Lab for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China;Ministry of Education Key Laboratory for Intelligent Network and Network Security, State Key Lab for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China;School of Software, Xiamen University, Xiamen 361005, China;Department of Industrial and Systems Engineering, Texas A&M University, TX 77843, USA

  • Venue:
  • Information Sciences: an International Journal
  • Year:
  • 2010

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Abstract

When simulating a mobile ad hoc network (MANET), it is important to use a realistic mobility model to reflect the actual performance of a mobile system. The spatial distribution of node locations in a mobile model plays a key role when investigating the characteristics of a MANET. However, most existing mobility models with random and simple straight line movement lead to unrealistic scenarios and non-uniform distributions, and can not describe the actual movement of Unmanned Aerial Vehicles (UAVs) connected via a MANET. To address this issue, a novel mobility model based on semi-random circular movement (SRCM) is presented. The approximate node distribution function in SRCM is derived within a 2D disk region. The relationship between application performance and node distribution is investigated for a UAV MANET, with focus on scan coverage and network connectivity. A simulation using the NS2 tool is conducted. It is shown that the presented model with a uniform distribution performs better than the popular Random Waypoint mobility model. The SRCM model with the NS2 simulator provides a realistic way for simulation and performance evaluation of UAV MANETs.