PS-LTE 광역해상 통신권 확보 방안

Abstract

The government is carrying out a project to establish a single nationwide public safety communication network (PS-LTE) for the organic mutual communication of disaster-related organizations. PS-LTE base stations were chosen by the municipal method, but RAN-Sharing system was selected among the railway network (LTE-R), maritime network (LTE-M), and commercial mobile communication network for cost reasons. This study was intended to predict problems that could arise from the public safety network to the wide-area sea due to the special geographical characteristics of the sea. LTE-M can communicate with 10Mbps up to 100 kilometers from the sea, but LTE-M cannot interconnect PS-LTE in the event of an accident in wide-area waters exceeding 100 kilometers. Therefore, this study focused on ship-type mobile base stations for PS-LTE linkage in wide-area waters. According to a survey of the operation status of the satellite communication network (KOSNET) of Korea Coast Guard patrol ships that will be operated as ship-type mobile base stations in wide-area waters, there was a lack of bandwidth already allocated due to on-site video transmission and the use of various business systems. It was a short-term task to spend a large budget to expand the satellite bandwidth in order to operate the public safety communication network. However, there was a limit to the expansion of the Mugunghwa 5A satellite bandwidth operated by the Korea Coast Guard satellite network, and it was confirmed that the next-generation satellite for public complex disaster was needed to link PS-LTE in wide-area waters. It is hoped that this research will be reflected in policies to secure wide-area maritime communication rights for public safety networks, thereby protecting the lives and property of the people.