This article discusscs mobile IP technology after analyzing the difficulty of realizing the data service on circuit network. After discussing the hierarchical network model
this article illustrates that mobile IP will take an important role in dala network. then emphasizes that total IP network will be the foundation of future wireless data service.
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references
Vertical handoffs in wireless overlay networks [J] . Mark Stemm,Randy H. Katz. Mobile Networks and Applications . 1998 (4)