Understanding placement models and mobility models

In wireless network simulations, it is very important to set up network topologies that match a real-time environment setup in terms of the equipment deployment locations and user mobility patterns. In order to set up either Wi-Fi networks or cellular networks, ns-3 provides a rich set of placement and mobility models. In this section, we will discuss how to use and configure various ns-3 placement and mobility models in our network simulations.

Let’s start by exploring the following ns-3 placement models:

• ListPositionAllocator
• GridPositionAllocator
• RandomDiscPositionAllocator
• RandomRectanglePositionAllocator
• GridBuildingAllocator and RandomRoomPositionAllocator

ListPositionAllocator

In wireless network simulations, it is necessary to set specific locations for Wi-Fi APs or cellular base stations so that it is possible to deploy them according to real-time site survey locations. In ns-3,...