The objective of this research work is to provide the IP Multimedia Subsystem of UMTS with a SIP-based mechanism for managing the interaction, composition and reuse of a limited number of standardized Service Capabilities in order to develop the Next Generation Network (NGN) services. The service invocation mechanism that we propose in this paper is extensible to deal with the interaction and composition management of a wide range of NGN services.
['Anahita Gouya', 'Noel Crespi', 'Lina Oueslati']
Next generation network service architecture in the IP multimedia subsystem