Until recently, the concept of 5G was shrouded in secrecy, with several parties presenting disruptive ideas to shift the market to their clientele and specialization. To tackle the so-called “1000x challenge,” this book uses the many perspectives on 5G mobile communication to sketch a more precise technological road map. Radio millimeter bands in the 30 GHz to 300 GHz range are utilized by 5G networks. Results from mmWave 5G testing have shown an effective range of around 500 meters from tower. Deploying 5G on millimeter wave-based carriers’ tiny cells may increase coverage for users. Small cells, when used in conjunction with beamforming, may provide widespread, instantaneous coverage with little lag. One of the most significant benefits of 5G is its low latency. 5G relies on an orthogonal frequency-division multiplexing (OFDM) architecture that can be easily scaled. The result is a significant improvement in latency for 5G, which may be as low as 1 ms (though more reasonable estimates put it at 1–10 s). Compared to the typical latency of 4G networks, it is predicted that 5G would be 60–120 times quicker. Improved connectivity and a more satisfying user experience are the results of combining active antenna 5G with 5G massive MIMO.