Mobility supported by IN in UMTS/B-ISDN

Mobility functions such as personal mobility, terminal mobility, location management and handover control are primary tasks for mobile networks. The next generation mobile network, is proposed to be integrated and become a part of the fixed network. Therefore the fixed network must be able to handle such mobile-specific functions. Intelligent Network (IN) could be one of the solutions for integration between mobile and fixed networks. By using the intelligent network concept, a mobility function could be viewed as a type of IN service. Each mobility function could be implemented in a modular way, separated from switches and implemented at the IN service control point. This will avoid switch-by-switch upgrading and reduce switch complexity and cost. In this paper, we describe how the IN could be placed on top of the mobile and fixed network to provide mobility functions.