| Abstract |
The Smart City concept is increasing every day, enrolling more and more in-field components, facilities and functions. Thus, the smart architecture ensures daily added operational functions, which finally consists as a benefit for the city infrastructure, administration and citizens. On the other hand, this evolution is adding two distinct problems: (1) insufficient communication capacity, because any network will eventually reach its maximum capacity limit and (2) power energy deployment on each in-field system and the decision of using local network supply (with many access points) or battery usage, considering the autonomy limitations. The paper is a deep analysis regarding the in-field technology and solutions, specific for mobile or movable solutions (sensors and command systems), which can use a low bandwidth transmission, radio interfaced and autonomous for long time (very low power devices). The conclusion is result of comparative tests between technologies, but it also considers the radio propagation models and it is specific for cities and crowded areas. |
