Packet mode in wireless networks: overview of transition to third generation

This article presents an overview of packet mode data transfer in cellular networks. Leading 2G+ cellular networks of GSM GPRS and IS-95B are introduced. The architecture and protocol layers in two leading third-generation cellular network proposals, cdma2000 and WCDMA, are presented. Mobile IP support in various cellular networks is discussed next. With efficient support of mobile IP in cellular networks, seamless integration of cellular networks with the Internet is expected to be reached at a rapid pace.