Global Mobile Communication using satellites
Abstract
Today the world is dominated by the two Mobile System (1)GSM (2)WLL .The architecture of both the system provides limited mobility. To over come this and other such problems, Mobile communication-using satellite is being invented Global mobile satellite communications (GMSC) are specific satellite communication systems for maritime, land and aeronautical applications. It enables connections between moving objects such as ships, vehicles and aircrafts, and telecommunications subscribers through the medium of communications satellites, ground earth stations, PTT or other landline telecommunications providers.
The basic architecture consist of satellite phone which directly transmits to the satellite orbiting above it .This satellite connect the user to the nearest Earth station
Also known as Hub. This hub is connected to the local network exchange
Mobile communication can also be done using GPS networks.
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