IP-based mobility management for heterogeneous wireless access

[摘要] Future high quality communication services will be offered in an integratedor converged network infrastructure maintaining both fixed wireless andmobile access via multi-mode user terminals. A support of various scenariosof user and/or terminal mobility within a common IP-based infrastructurerequires intelligently designed control protocols. A major challenge is toprovide seamless (i.e.lossless and low delay) handover between differentradio cells and operator domains to enable continuation of unicast andmulticast sessions while using network resources most efficiently. IETF(Internet Engineering Task Force) is specifying related IP mobilitymanagement protocols to be applicable also to a flat architecture asenvisaged by Next Generation (Mobile) Networks (NGNs/NGMNs). Thecontribution will describe operator requirements towards such an approach.Both single-domain and multi-domain scenarios will be discussed based onfederation ideas. Already existing solutions are taken into considerationand application of solution proposals towards a Distributed MobilityManagement (DMM) currently under evaluation within IETF will be outlined.

[学科分类] 电子、光学、磁材料