Enabling Network Convergence Through Contextual Session Mobility With IMS
A Dragoi, Nadjia Kara, Sonia Aı̈ssa · The International journal of Multimedia & Its Applications · 2011
To fully benefit from the all IP convergence, it should be possible for a user not only to access services ubiquitously and at any time, but also to automatically and seamlessly transfer ongoing communication between different devices.This article investigates the problem space of supporting Session Mobility (SM) with IMS and the associated issues such as when and how to support dynamic changes in the set of devices through which the user accesses a session.It also investigates how the SM arrival calls should be handled at the network level where they are not considered as ongoing sessions.Hence, we discuss the design options and identify functional blocks needed to support SM.We propose applying priority-based resource allocation approach to guarantee lower blocking probability for ongoing SM arrival calls compared to new arrival calls.Numerical results show that this approach allows achieving such performance for different call arrival rates.