ic from thousands of femtocells either to the Internet or, for voice calls, to the mobile switching center. A key enabling technology that makes femtocells and pico cells feasible are the software algorithms that detect signals from macrocells. Traffic at the edge of the cell has the potential to interfere with frequencies in macrocells because signals can "bleed" into surrounding areas. Improved software algorithms in femtocells and pico cells have the capability to sense both the frequencies and the power levels in the microcell and adjust them as required SO that the femtocell signals don't interfere with the macrocell traffic. Femtocells and pico cells can sense the radio conditions in adjacent cell sites before they start transmitting. This so-called "Network Listen" scan enables the femtocell to, for example, raise its power if the signal from the surrounding macrocell is strong, or conversely, reduce its power if the signal from the macrocell site is weak. This decreases interference and improves voice quality and data speeds for mobile users in the vicinity-both those served by the femtocells as well as those in the surrounding macro network. Cellular on Wheels-Short-Term Coverage for Sporting Events, Concerts and Natural Disasters During a sporting event or concert that attracts thousands of people, mobile carriers often bring in www.TechnicalPDF.com temporary service in the form of Cellular Service on Wheels (COWs). COWs are also deployed during natural disasters such as earthquakes, or hurricanes that may knock out cellular service. COWs are trucks equipped with antennas and base stations that can be quickly deployed. However, for COWs to be effective, roads must be passable for the truck with the COW to reach hard-hit areas. This is a problem during natural disasters when roads may be washed out or made impassable, as occurred in the aftermath of the 2018 hurricane in the Florida panhandle and Gulf Coast areas. Many sections of the fiber network connecting cell towers to the core cell network were als