Implementation and operation of a satellite-based broadcast IP network

This paper summarizes the advantage of satellite communication in order to build a wide-coverage broadcast IP network in conjunction with the Internet. Taking various technical factors into consideration, the broadcast IP network has been designed and built in the Asia Pacific region by using an existing satellite. Details such as those regarding broadcast capable datalink technology, Earth station composition, satellite link budget (calculation of carrier-noise ratio margin), and IP and TCP performance are illustrated. This paper also discusses operational experiments conducted on the network exemplified by a vehicle for providing new distance education, and demonstrates the feasibility of practical use of the broadcast IP network using a unidirectional satellite link.