  With the major wireless service providers planning to start deployment of 4G
wireless networks by mid 2010, research and industry communities are racing
against time to find solutions for some of the prominent still open issues in
4G networks. The growing interest in 4G networks is driven by the set of new
services will be made available for the first time such as accessing the
Internet anytime from anywhere, global roaming, and wider support for
multimedia applications. In this paper describe some of the key opportunities
will be made available by 4G networks, present key challenges and point to some
proposed solutions.
