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Examining the concept of 4G (fourth generation mobile), IP for 4G provides readers with in-depth background material to the key technologies and developments including: Wireless LANs, WiMAX, IP developments, IMS, and 3G. The book examines these key technological drivers in light of the commercial propositions: what is likely to generate extra revenue or reduce existing costs? Providing an essential summary of the key technologies and issues of 4G, the text brings together the technology, the commercial arguments, and the latest developments in a single volume.