A Survey On Wireless Networks

Mobile data traffic is been increasing every year. To address this challenge, many industries have initiated research and development of fifth generation (5G) wireless network. To support this, a large number of small cells are expected at indoors and outdoors, giving rise to heterogeneous networks (HetNets), it is considered as the key way toward 5G. The small cell networks becoming core parts of the 5G cellular networks. The 5G mobile networks are evolved to support the data traffic with reduced energy consumption and improved quality of service (QoS). Technologies, such as heterogeneous networks (HetNets), massive multiple-input multiple output (MIMO), and millimeter wave (mmWave) techniques, have been identified to bring 5G to accomplishment. The emerging 5G networks introduce numerous challenges and opportunities. The softwarization of networks is expected to shape the design, operation and management of 5G networks. However, network softwarization comes with its own set of challenges, including robustness, scalability and resilience. In the past few decades, wireless communications have been evolved from GSM system (2G) to LTE-A networks (4G) with the major interest focusing on the throughput. 5G communication networks, however, extend to a 3-D performance metric cube based on throughput, number of links and delay simultaneously. 5G networks confront a wider range of future applications. 5G communication system design, will further pave the way towards energy efficient, low latency and high reliable communication