An Inter-System Hando Technique for the IMT-2000 System

Next generation wireless communication is based on a global system of xed and wireless mobile services that are transportable across diierent network backbones , network service providers, and network geographical boundaries. One of the most important problems for global wireless service is handoo management. In this paper , a new handoo technique is introduced which supports mobility between dissimilar networks. First, the system architecture is described, based on the concept of a boundary cell region between networks. Then a new inter-system handoo protocol is presented that uses boundary cells that allow the mobile terminal to roam into a diierent network. The performance of the protocol is analyzed in terms of the additional inter-system handoo signaling time and the minimum boundary cell area threshold for a successful transition within the prescribed time constraints.