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5G (5th generation mobile networks or 5th generation wireless systems) denotes the next major phase of mobile telecommunications standards beyond the current 4G/IMT-Advanced standards. NGMN Alliance or Next Generation Mobile Networks Alliance define 5G network requirements as: – Data rates of several tens of Mb/s should be supported for tens of thousands of users. – 1 Gbit/s to be offered, simultaneously to tens of workers on the same office floor. – Up to Several 100,000’s simultaneous connections to be supported for massive sensor deployments. – Spectral efficiency should be significantly enhanced compared to 4G. – Coverage should be improved – Signaling efficiency enhanced. Next Generation Mobile Networks Alliance feel that 5G should be rolled out by 2020 to meet business and consumer demands. Although updated standards that define capabilities beyond those defined in the current 4G standards are under consideration, those new capabilities are still being grouped under the current ITU-T 4G standards.