It is difficult for the operators to maintain good signal coverage for the roads or villages in the mountain area, due to the nature obstacles and surroundings. Building base stations to provide coverage isn’t the best solution since the population is low in the mountain area. In this kind of environment, the Frequency Shifting Repeater, and the ICS Repeater are good coverage choices, these repeaters can efficiently provide coverage to the mountain area with a reasonable cost. Other possible choices are the Fiber Optic Repeater and the High Power Repeater but with more strict application requirements.