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The Fourth Generation (4G) of wireless networks is no longer a dream; it is knocking now at the doors of our information village. 4G promises to offer a vast range and diversity of converged devices, services, and networks and to revolutionize the way we communicate. 4G would influence today's networking architecture where the inter-user communication is realized with the help of third-party communication infrastructure. In 4G, the centralized third-party controlled networking architecture can emerge into a hybrid model, where a part of user-to-user interaction would be envisaged by short/medium range wireless communication systems.