| 摘要 |
<p>A communication system comprises a plurality of systems connected by a geostationary satellite and provides high-speed, high-efficient transmission of content data. A transmission system has a distribution URL list that is a list of the content data on the WEB, which are to be distributed to receiver systems. When the transmission system has received new content data in the distribution URL list from the WEB, the content data are sent by multicast communication using the geostationary satellite to update cache at the receiver systems.</p> |
