Coordinated Multi-Point Transmission in 5G and Beyond Heterogeneous Networks

Over the years, there has been a significant increase in the human population as well as the autonomous devices requiring ubiquitous wireless connectivity. The current wireless technology is no longer meeting the prodigious demands of wireless capacity and data rates. This problem bounds the wireless network operators to have second thought regarding the available networks and their resources that have become narrow and limited to accommodate the entire traffic. In this paper, we discuss LTE Heterogeneous Networks (HetNets) as the most competitive solution to meet the ever-increasing demand for wireless data rates. The concept of HetNets has risen out of the need of cellular network operators to be able to operate networks consisting of a variety of radio access technologies, formats of cells and many other aspects, and combining them to operate in a seamless fashion. This article focuses on the Coordinated Multipoint (CoMP) technique and its effectiveness to overcome the interference and security challenges in HetNets. CoMP has proven to be a tremendous interference mitigation technique along with physical layer security (PLS) improvement as well. It provides high secrecy coverage probability and interference performance through careful coordination among the Base Stations (BSs). We will also provide simulation results to show how CoMP based resource allocation techniques allow a substantial increase in terms of capacity and hence reduced interference.