Base on GPRS(General Packet Radio Service) and voice call traffic under a certain dynamic channel allocation scheme

a two dimensional Markov chain is established. An approximation method was used to obtain the steady solution of Markov chain. Using M/M/s/s queue modeling by numerical calculation some main performances of the network can be estimated

such as the call blocked ratio

date average transfer rate

channel utility. The computation results show that the model is effective and is useful for network′s optimization.