Mobile Opportunistic Networks

6  ◾  Libo Song and David F. Kotz

© 2011 by Taylor & Francis Group, LLC

another node, followed by a long noncontact period. A third node may have a

short contact with the rst node, followed by a short noncontact period. Using the

above estimation approach, both examples would have similar contact probability.

In the second example, however, the two nodes have more frequent contacts.

We design a method to capture the contact frequency of mobile nodes. For this

purpose, we assume that even short contacts are sucient to exchange messages.*

e probability for node i to meet node j is computed by the following proce-

dure. We divide the contact hi ...