Optimization Study on Emergency Communication in the Great East Japan Earthquake

Emergency communication is a special communication mechanism used for disaster rescue. The article took the Great East Japan Earthquake as the research object. It was found that mobile communication was the main way in general communication and social media played an important role in emergency communication. The causes of traffic congestion were studied to provide strategies for PSTN and mobile communication. Unitary management system in Japan for the restoration of services was studied, too. At last, the development of satellite communication in Japan and its needs for emergency communication were researched to provide references for emergency communication in China. (paper)