Densification of 5G Heterogeneous Cellular Wireless Network Based on Millimeter-Wave Communication

Abstract

The world is experiencing a massive advancement in the fifth generation (5G) of wireless networks communications., which will bring about a noticeable change in the communication system as well as the emergence of new technology to keep pace with this system including Software Design Network (SDN)., Network Function Virtualization (NFV) and Massive Multi inputs Multi outputs (M-MIMO), which will rapidly and effectively improve the quality of services for consumers. The high frequency of tens of GHz used in this type of network, leading to up to tens of gigabits per second in the data rate. This paper dealt with the planning of 5G networks in urban and suburban area in Taiz city. The main problem that faces in the 5G wireless network that in suburban area where the mobility is high, the network implemented using overlapped cells to provide mobility from one cell to another and. However, overlapping increases interference and, consequently, may reduce network capacity. Also, in urban area, the main problem is due to dense deployment of multi-tier heterogeneous networks (Het-Nets) causes the inter-tier and intra-tier interferences. Areas are divided into small cells of different sizes according to population density and other natural factors to achieve network density by millimeter wave (mm- Wave) technology that uses a frequency of 60 GHz., which is one of the most important characteristics of 5G networks resulting from an increase in the number of cells and (Het-Nets). So, it achieved a high data rate which reach to 8 Gbps at each cell. There are about 240 cells in urban area and 105 cells in the suburban area, so this made it able to provide services to more than 220,000 users in urban and more than 100,000 users in suburban in addition to the optimization of power, which has reached the value of power received less than -120 dBm.