In the next generation networks, the users should have access to unified services seamlessly via any kind of network technology. Overlay approaches with unified signalling protocol are considered as the major solutions to realize the convergence of communication services. This book concentrates on two main topics: i) Extension of IMS to WiFi and converged communication services in 3G/WiFi and ii) Design of P2P Telephony overlay compatible with IMS/SIP on ad hoc networks. Vast deployment of WiFi technology in the scale of a city to provide pervasive internet access is happening...
In the next generation networks, the users should have access to unified services seamlessly via any kind of network technology. Overlay approach...