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Satellites are foreseen to be complementary to future terrestrial networks. They allow fast and economic deployment of multimedia communication systems. Traditional satellite are used as bent-pipe systems relaying information between fixed locations within the satellite coverage. The new emerging satellites with multiple spot beams and On-Board Processing (OBP) will have new capabilities of dynamically routing information between various spot beams. The use of multi-beams and OBP provides a great opportunity for the speedy deployment of real time services such as Voice over IP (VoIP) over satellites.
Multimedia conference is one of the important applications in the Internet. To support such an application over satellite networks and take advantages of the wide coverage and broadcast characteristics of satellites, one has to address multicast routing and performance of IP applications over satellite. Research has been carried to study how satellite networks can support fficiently the IP based multimedia applications including voice, video and data and impacts of satellite networks on these applications.
I worked on a project called Validation of IP-Telephony over EuroSkyWay Network (VIP-TEN) for studying VoIP over satellites. Also I worked on a European IST project named IP ConferEncing with Broadband multimedia ovERGeostationary Satellites (ICEBERGS) which addressed issues such as efficient multicast routing over satellite to enable efficient multicast multiparty multimedia IP conferences, conferencing models suitable for satellite networks.
For more information on IP conferencing over satellite see my publication list.