At present, urban citizens enjoy convenience of being easily connected to each other by a well-established telecommunication network in the urban areas. However, during the time of unpredicted disaster like the typhoon, floods, or hurricanes, communication infrastructure can be damaged which could lead to a major communication interruption. In addition, mountainous and rural areas have poor network connection with only a few established infrastructures due to its geographical limitation. To solve this problem, a Korean company that is specialized in the development of wireless communication t