An In-Building Solution (IBS) refers to a comprehensive network infrastructure designed to provide seamless wireless connectivity within large or complex indoor environments such as office buildings, shopping malls, airports, hospitals, and stadiums. It involves the deployment of distributed antenna systems (DAS), small cells, Wi-Fi access points, and other related technologies to ensure strong, reliable, and high-capacity signals throughout the building. The primary goal of an IBS is to enhance indoor coverage and capacity, overcoming the challenges posed by building materials and architectural layouts that typically hinder radio signal propagation. By implementing an effective IBS, organizations can improve user experience by providing uninterrupted mobile service, support various wireless applications, and ensure compliance with communication standards, thereby enabling efficient communication and operational productivity within the indoor space.