session management for heterogeneous wireless access networks
3G networks offer new opportunities for mobile or nomadic users to remain connected to their services through changes in environment conditions. Such continuity still presents challenges however. 3G networks require resource management to guarantee that services will meet performance expectations. Also, because of cost, alternate wireless networking technologies can now be used in complement with 3G to take advantage of hotspots, while still preserving continuity of session.In this paper, we propose and analyse a multi-network session management infrastructure based on established protocols. The session unifies information on active services over different access networks. It supports service continuity, migration of services between networks to attempt to always give to the user a better experience at lower cost.A session supports composition of services based on different signalling models, although our primary focus is on SIP and HTTP, and our concept derived from IMS.
ims sip http service network service composition user session