Table 2. How the proposed system can develop a sustainable smart city.

Economical	Environmental	Social
• Utilize the existing LED bulbs in the smart city for both as light source and data transmission. • Larger spectrum to provide scalable solution that support the increasing number of wireless devices. • Developing the system using Li-Fi can reduce cost of infrastructure than using the Wi-Fi for the same purposes. • LEDs have long lifespan which reduce cost of purchasing lights.	• Used in sensitive environment. • Reduce energy consumption, so reduce Co2 emission. • The lamps also can be attached with different sensors to collect and deliver data using Li-Fi technology. These sensors can be used to monitor different environmental issues in the smart cities. • Participate in waste reduction and saving the environment.	• Enhance the provided services to citizens. • The proposed systems can be used in different use cases in the city. For example Awareness campaigns, advertisements , emergency warning • All of these benefits of the system can improve the public services and increase citizen stratification.