OPTIMAL COVERAGE FOR INDOOR COMMUNICATIONS BASED ON 5G WI-FI DEVICES

To achieve optimal wireless fidelity (Wi-Fi) coverage, start by assessing the location and evaluating the needs of users and devices. This study compares various UniFi devices (Mesh, Lite, Pro, and HD) to identify which one can provide free Wi-Fi coverage throughout Najaf International Airport. To cover the passenger terminals, 19 UniFi Mesh or UniFi Lite devices, 12 UniFi Pro devices, and 8 UniFi HD devices are needed. It was observed that the UniFi HD device provides extensive coverage and supports over 500 users. It delivers high-speed data transmission, reaching 800 Mbps on the 2.4 GHz band and 1733 Mbps on the 5 GHz band. Additionally, it used UniFi HD devices to enhance coverage, reduce costs, and minimize signal interference, aligning with recent research objectives. Furthermore, it was observed that the coverage rate is 60% with UniFi Mesh or UniFi Lite devices, 72% with UniFi Pro devices, and increases to 92%-100% with UniFi HD devices. It was concluded that increasing the number of devices in airport terminals can hinder signal transmission due to varied operating ranges and obstacles, particularly in Non-Line-of-Sight (NLoS) regions. Materials like concrete can obstruct signals, while wood and iron scatter them, and bricks may absorb them