New Delhi: The telecom department is in discussion with the space department to set up a network of satellite for communication services across the country, a source said. “DoT is working to set-up network of low earth orbit (LEO) satellite and medium earth orbit (MEO) satellite for telecom services. The entire expenses will be borne by the telecom ministry. Discussion in this regard has already started with Department of Space,” the source said. Indian Space Research Organisation has launched 35 communication satellites till date, of which four satellites – GSAT 6A, GSAT 29, GSAT 11 and GSAT 7A were launched in 2018.
These satellite selectively provide connectivity to different institutions and business organisations. Their services are also used for satellite phone connectivity, mobile services in islands and hilly areas, and vsat services, among others. All the GSAT satellite are geo-stationary (GEO) satellites located at distance of 36,000 km, which results in time lag between transmission and reception of signals. In case of voice calls made using GEO satellite connection, callers get to hear voice after lag of 20 milliseconds. “Latency in data signal is not good for mission critical applications. Even experience during voice call is not good. People are required to wait to listen sentence from person on other side. LEO satellites will be placed in orbit at distance of around 2,000 km. This will reduce latency in signals,” the official said.
