IMS-Based Centralized Service Continuity

Authors:
Wei-Kuo Chiang;Po-Chiang Kuo
Affiliations:
Department of Computer Science and Information Engineering, National Chung Cheng University, Chiayi, Taiwan, ROC 621;Department of Computer Science and Information Engineering, National Chung Cheng University, Chiayi, Taiwan, ROC 621
Venue:
Wireless Personal Communications: An International Journal
Year:
2013

Citing 9
Cited 0

Efficient and Provably Secure IP Multimedia Subsystem Authentication for UMTS

The Computer Journal
On the support of voice call continuity across UMTS and wireless LANs

Wireless Communications & Mobile Computing
Performance evaluation of SIP-based multimedia services in UMTS

Computer Networks: The International Journal of Computer and Telecommunications Networking - Selected papers from the European wireless 2004 conference
Voice call handover mechanisms in next-generation 3GPP systems

IEEE Communications Magazine
Network-based mobility management in the evolved 3GPP core network

IEEE Communications Magazine
IMS-compliant management of vertical handoffs for mobile multimedia session continuity

IEEE Communications Magazine
Mobile-initiated network-executed SIP-based handover in IMS over heterogeneous accesses

International Journal of Communication Systems - Part 2: Next Generation Networks (NGNs)
Interworking of Wimax and 3GPP networks based on IMS [IP Multimedia Systems (IMS) Infrastructure and Services]

IEEE Communications Magazine
Interworking of WLAN-UMTS networks: an IMS-based platform for session mobility

IEEE Communications Magazine

Quantified Score

Hi-index	0.00

Visualization

Abstract

The IP Multimedia Subsystem (IMS) has been selected as a telecommunication industrial standard for the signal processing in the heterogeneous access networks. It is also brought up to handle the mobility management. However, the mobility of the user equipment (UE) may disrupt or even intermittently disconnect an ongoing real-time session, which heavily affects the satisfaction of the users. Therefore, how to reduce the service disruption time gets more and more important. This paper first proposes a centralized service continuity scheme, abbreviated as CSC, in IMS-based networks. The CSC treats handover as a service in the IMS network. Its architecture and operation are based on service invocation. The service continuity procedure is performed by an application server called CSC AS. The CSC AS can carry out the third-party call control for fast session re-establishment by initiating two INVITE requests concurrently. In addition, a variant of the CSC, denoted by CSC*, is derived by adopting the E-IMS AKA with one-pass authentication for achieving the acceleration of IMS registration during the handover. Analytical results show that both schemes could shorten the handover latency significantly, as compared with the standard IMS-based service continuity.