Enhancing signal to noise interference ratio for device to device technology in 5G applying mode selection technique

Fifth Generation (5G) is the upcoming stage in the development of the entire mobile communication technology. 5G cellular network is expected to offer higher data rates, lower latency, more extended coverage area and capacity, and lower energy consumption than previous cellular networks (i.e. 1G-4G). D2D is considered as one of the key technologies provided to enhance 5G performance. Direct communication among two devices without involvement of any central point (i.e. base station), is defined as device to device (D2D) communication. D2D is considered a vital technique to enhance the performance of mobile cellular networks in terms of Signal to Interference noise ratio and energy efficiency. This paper presents 5G requirements, clarifies D2D technology and states the technology's advantages and applications. Besides that, the effect of mode selection is investigated on the network performance to enhance it. Results show that D2D in case of proximity distance has better results than cellular mode 4 times. Also, shows that using mode selection enhances SINR more than using D2D 2 times or using cellular communication 4 times.