An introduction to the next generation of mobile networks, where IP data capability and mobile communications become integrated to form new, cutting-edge mobile IP networks. This resource offers an understanding of the convergence of mobile and data technology. It explains how the prospect of continuous connectivity adds a new dimension to e-business, moving it towards m-business, which promises to give users access to network services as they travel from one location to another. The volume examines the technology that enables true mobility for handheld devices, including GPRS, 3G, and the critical new protocol Mobile IP, which allows a computer to roam freely on the Internet while maintaining the same IP address. The work contains all the details needed to design a mobile data service, build a Mobile IP network, and develop mobile applications. An in-depth exploration of the routing and addressing options in IP networks is presented to complete the network picture. Furthermore, the author explores the future emergence of m-business and the applications enabled by an information network that supports roaming.