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Gilat accent presentation_2012

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Gilat - VSATs hibridas, combinando tecnologias estatística(TDMA) e determinística (SCPC) no mesmo produto - Flavio Pinto

Publicada em: Tecnologia
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Gilat accent presentation_2012

  1. 1. Confidential and proprietary information This presentation constitutes proprietary and confidential information of Gilat Satellite Networks Ltd. This presentation may not be disclosed, used or duplicated, in whole or in part, without the prior written consent of Gilat Satellite Networks Ltd. SkyEdge-II Accent November 2012
  2. 2. Confidential and proprietary information TDMA or SCPC (general aspects)? ● TDMA (“Burst”) advantages over SCPC: ● Better BW efficiency in dynamic environments ● Better management of remote sites ● Adaptive outbound and inbound ● SCPC advantages over bursts: ● Continuous or high activity ratio – no DAMA benefits ● SCPC Applications: Backup for terrestrial, Video or file upload, PoP (ISP/cyber café), High capacity cellular backhaul, On-the-Move or On-the- Pause antennas 2
  3. 3. Confidential and proprietary information Best of Both Worlds Unified System – SCPC and TDMA ● Accent – unified MODEM for both SCPC Mode and Burst Mode ● Unified System ● Unified DVB-S2 Outbound for TDMA and SCPC VSATs ● DVB-RCS or DVB-S2 IB ● Same Hub; Same NMS; Same VSATs ● All remote VSATs are managed (SCPC or TDMA) ● Adaptive high speed DVB-S2 ACM inbound 0.3-10Msps; 24Mbps ● 24Mbps Inbound or 24Mbps Outbound, total of above 35Mbps ● On Demand TDMA-SCPC ● Change from Burst to SCPC (Continuous Carrier) and back to Burst on the fly 3
  4. 4. Confidential and proprietary information SkyEdge II Accent Additional Highlights ● L3 support– routing, spoofing, QoS, encryption, compression; CacheMode! – Features are not commonly available in SCPC modems ● 19”, 1U box ● Connections in the front, 48VDC ● Connections in the back, AC Power ● Software switchable between modes: SCPC/TDMA ● Automatic Scheduler for SCPC channels set-up and tear-down ● PDMA – Bandwidth /Power saving technology for SCPC link - Changing IB modulation to robust MODCOD based on traffic throughput ● Reduces power usage in the satellite ● MCD as part of the hub – a new 4-channel demodulator / receiver 4
  5. 5. Confidential and proprietary information Let’s Look at a Few Applications 5 ● Cellular Backhaul (e.g. GSM Abis; UMTS) ● ISP Point of Presence (PoP) ● Business Continuity ● Satellite On The Move(SOTM) – Video Contribution & DSNG ● Networks with eventual or periodic demand for high throughput
  6. 6. Confidential and proprietary information Cellular Backhaul ● High throughput BTS sites enjoy the SCPC Mode (for example 4:4:4 BTS sites) ● Low throughput BTS sites enjoy the bursty Mode (for example 1:1:1 BTS sites) SkyEdge II Hub with MCRs and MCDs BTS n BSC MSC LAN LAN Abis Interface over LAN A Interface BTS 1 SkyEdge-II Accent VSAT LAN 6 SkyEdge-II Accent VSAT New Hub component: MCD Quad Demodulator for Accent in SCPC Mode Benefit to the Service Provider: Better usage of space segment – The right access scheme in every site
  7. 7. Confidential and proprietary information Cellular Backhaul
  8. 8. Confidential and proprietary information Point of Presence – Integrate New SCPC Sites 8 PSTN INTERNET/ INTRANET SkyEdge II Accent Residential Gateway Video Conference User PC User PC Telephone LAN SkyEdge II Hub PoP SkyEdge II Accent Traffic through the VSAT tends to be relatively stable daily during the busy hour ● SCPC Inbound is recommended ● Better usage of space segment (Point of Presence) Hundreds of PCs behind the VSAT
  9. 9. Confidential and proprietary information Business Continuity ● Service Provider offers to various Enterprises and Governmental organizations a service of “Business Continuity” ● “Once your main terrestrial connection fails, I will provide you with a high speed satellite alternative until recovery from the terrestrial problem” 9 ● Example: Service Provider sells the protection service to 20 different customers in different geographical locations ● The offered backup service –2Mbps ● Terrestrial failure –traffic routed to the on-site VSAT ● VSAT automatically switches to SCPC (VRRP protocol) ● Once terrestrial traffic is restored VSAT switches back to Burst INTERNET Core Network SkyEdge II Hub Branch SkyEdge II Accent Main Backup IP
  10. 10. Confidential and proprietary information Business Continuity
  11. 11. Confidential and proprietary information SOTM Satellite On The Move 11 PSTN INTERNET/ INTRANET SkyEdge II Accent LANSkyEdge II Hub SkyEdge II Accent Bursty Mode at times of low traffic with automatic switchover to SCPC on demand: ● SCPC Inbound in times of video upload, large file upload, etc. ● Better usage of space segment
  12. 12. Confidential and proprietary information SOTP Satellite On The Pause
  13. 13. Confidential and proprietary information Eventual or Periodic High Throughput INTERNET/ INTRANET SkyEdge II Accent SkyEdge II Hub SkyEdge II Accent ● Regular traffic (dynamic) runs over TDMA carrier. ● In special events (e.g. drilling), a high throughput shall run in SCPC, getting a better performance SkyEdge II Accent TDMA TDMA SCPC
  14. 14. Confidential and proprietary information Thank You Rogerio Tuyama rtuyama@gilat.com.br 14