4G LTE Cellular Technology: Network Architecture and Mobile Standards
he earlier evolution of broadband wireless technologies is the consequence of growing demand in the world for best ever mobile Internet access and wireless multimedia applications. This paper explores the network architecture of 4G (4th Generation) and LTE (Long Term Evolution) wireless technologies, the mobile standards used by these technologies and key features. The 4G architecture basically build upon 3G or can say that it is a extension of 3G wireless technology. 4G represents the future of mobile communications in the longer term. In 4G, the majority of the traffic is data and multimedia as opposed to voice only. Data rates in 4G systems will range from 20 to 100 Mbps. Through a common wide area radio access technology and flexible network architecture WiMAX and LTE has enabled convergence of mobile and fixed broadband networks. Next fourth generation (4G) mobile technology, promises the full mobility with high speed data rates and high capacity IP based services and applications while maintaining full backward compatibility. LTE is not as much a technology as it is the path followed to achieve 4G speeds. Keywords 4G, LTE, Wireless Technology, Cellular Network, OFDMA, WiMAX, E UTRAN, etc.