This is a research paper on Mobile communication play a vital l role in the data and voice network front. With the deployment of mass scale 3Gjust around the globe, new directions are already being researched. This paper addresses the fourth generation mobile communication. The Fourth Generation (4G) Mobile Communication not only emphasizes on increase in data rate and new interfaces but it also converse the advanced wireless mobile communication. The high speed wireless access the systems in an Open Wireless Architecture (OWA) platform which has become the hub of this emerging next generation mobile technology. Based on the OWA model, 4G mobile would deliver the best business to the wireless market and Asia-Pacific which happens to be the most dynamic market of new generation mobile communication with over $100 Billion businesses in the next decade. The 4G mobile technology is the intersection and convergence of wireless mobile and wireless access around the globe. Any single architecture wireless system, including 3G, HSDPA, WiMax, etc., is a transitional solution only, and will be replaced by open wireless architecture system very soon where in various different wireless standards can be integrated and converged on open platform. The advent of 4Gwireless systems has created many research opportunities. The expectations from 4G are high in terms of data rates, spectral efficiency, mobility and integration.