New Mobility Model for a City Square

Instead of a disk area, the floating content can be utilized to store timely information for pedestrians visiting, e.g., a city square. An abstract model for a city square is as follows:
  • Nodes arrive to one of the corners of a rectangular area
  • Upon arrival, a node moves to a random location within the square
  • Upon reaching a waypoint, it chooses to exit the square with probability of Pexit by moving to one of the corners
  • Otherwise, a node chooses uniformly in random another waypoint in the area and moves there
The figure on the right illustrates how the node density changes as a function of parameter Pexit. When Pexit=1, the node density is rather edgy, and as Pexit increases the density function approaches the density function of the RWP model.