Connection model between users, i.e. who a user calls to among the other users, is based on BA model. The degree distribution of the BA Model follows a power law. The degree distribution resulting from the BA model is scale free. In the model users do not move from disaster areas to non-disaster areas, and vice versa.
Regarding BA model, average number of users for different time length is 3.3, and an initial network of m0 nodes is 2.
Channel resource allocation procedure in Node B is based on queuing theory. Duration of holding a channel is based on Poisson distribution. In the traffic analysis average of duration of holding channels is 30 seconds.