Broadband Internet Satellite ISOM 591 April 10, 2000
High Speed Internet Access: Choices • • • Arun’s dilemma! POTS (plain old telephone system) ADSL Cable modem Wireless access device through PCS new entrant - broadband satellite services
Who’s in the Market Now • Hughes Network Systems (US) – www. hns. com • Europe Online – www. europeonline. com • Gilat-to-Home – Gilat Satellite Networks and Microsoft – www. gilat. com
Current Services • Direct. PC since 1996 (Hughes) – 100, 000 subscribers – data rate rarely reaches the 400 kbps promised – traffic from the satellite is downstream only, phone line used for upstream traffic – new two-way services to be offered this year – hope to gain 1. 2 million subscribers by 2003
Technology • Current satellites use the C and Ku bands • Next generation – satellites will use the Ka-band – offers more spectrum – easier to find slots – digital on-board processing to better manage traffic – up to 226 Mbps
Technology • Ka-band satellites built by Hughes’ Spaceway System, Astrolink, i. Sky, and Net. Sat 28 • spot beam antennas focus the signal rather than dispersing signal and power across a large area • since energy is concentrated, the dish is smaller
Data Transfer Rates • • Current satellites - up to 400 Kbps Cable - up to 1. 5 Mbps ADSL - up to 1. 5 Mbps Future satellites - up to 226 Mbps – looking for the business market – ability to charge users for the amount of band width consumer, like electricity is currently monitored
Projects • Astrolink (Telespazio, a Telecom Italia company, Lockheed Martin, TRW, and Liberty Media) – www. astrolink. com • geostationary broadband that will initially use 4 of its 9 satellites • available in North America in 2003 • want to offer broadband at the same price as cable and DSL
Projects • Gilat - founded in 1987 in Israel – low-cost satellite dishes and networks – merger with Spacenet (belonged to GE) – attempting to penetrate the US market over the last decade • i. SKY - ww. isky. net – two way service over satellite, 1. 5 Mbps, no phone line needed
Projects • Net. Sat 28 - www. netsat 28. com • patented technology inside the satellite payload • 40 Gigabits of bandwidth out of one or two satellites, costing $250 million • want to deliver 30 - 40 Mbps at the same price as ADSL and cable
Challenges • Pricing - can they live up to their promises? • Technology - expensive, proprietary • Funding and financing - investment costs will continue to increase • technical problems – launching problems _”lost in space” – maintenance • Is the market business or consumers?
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