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Sspi day out_2014_gilat-carlos_xavier

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Gilat - SkyEdge-II Accent - Carlos Xavier Jr

Publicada em: Tecnologia
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Sspi day out_2014_gilat-carlos_xavier

  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
  2. 2. Confidential and proprietary information TDMA or SCPC? ●  TDMA operation (Burst Mode) has advantages over SCPC ●  Better bandwidth efficiency in dynamic environments ●  Better Management of remote sites ●  Adaptive outbound and inbound ●  Continuous operation (SCPC) has advantages over bursts: ●  Continuous traffic (high activity ratio), where DAMA does not bring benefits ●  Need high throughput in given antenna size – SCPC has better performace ●  Applications: Backup for terrestrial lines; Video or file upload; PoP (ISP/ cyber café) or very large enterprise site; High capacity cellular backhaul sites; On-the-Move small antennas (mandates the better Eb/N0) Demand Assigned Multiple Access(DAMA) x Single channel per carrier x Time division multiple access 2
  3. 3. Confidential and proprietary information Case study; African ISP ●  Using SkyEdge II to connect government and enterprise customers in Africa ●  Have 2Mbps high speed video links to upload to Europe ●  Pre-planned ●  No remote technical people ●  Accent is the perfect solution! ●  Upload 2x more efficient ●  Same OB as before of introducing Accent ●  Managed from NOC First Accent customer 3
  4. 4. Confidential and proprietary information Cellular Backhaul ● High throughput BTS sites enjoy the SCPC Mode ● Low throughput BTS sites or Node B data traffic enjoy the bursty Mode (TDMA) SkyEdge II Hub with MCRs and MCDs BSC or RNCMSC LAN LAN Abis Interface over LAN A Interface BTS / NodeB SkyEdge-II Accent VSAT LAN 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 4 BTS / NodeB
  5. 5. 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” 5 ●  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 (based on VRRP protocol) ●  Once terrestrial traffic is restored, VSAT switches back to TDMA mode INTERNET Core Network SkyEdge II Hub Po P SkyEdge II Accent Main Backup IP
  6. 6. Confidential and proprietary information 6 PSTN INTERNET/ INTRANET SkyEdge II Accent Residential Gateway Video Conference User PC User PC Telephone LAN SkyEdge II Hub PoP Point of Presence 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
  7. 7. Confidential and proprietary information 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 NMS; Same hub; Same VSATs ●  All remote VSATs are managed (SCPC or TDMA) ●  DVB-S2 ACM inbound, 0.3-10Msps ●  Speed to 24Mbps inbound or 24Mbps outbound, total 40Mbps ●  On Demand TDMA to SCPC Switchover ●  Change from Burst to SCPC (Continuous Carrier) and back to Burst on the fly ●  “Classifier” based Triggering – one or more of the classifiers that serve for QoS prioritization 7
  8. 8. Confidential and proprietary information Triggering – TDMA to SCPC and Back ●  The Classifier analyzes the inbound traffic of the VSAT ●  The Destination IP Addresses (one address or a range of addresses) can serve as the trigger ●  Similarly, TCP/UDP ports ●  The DSCP code (packets that are already colored) ●  VRRP protocol serves to identify failure of a terrestrial primary connection and automatically switches the VSAT to SCPC Mode ●  The VRRP protocol also selects the VSAT as the Master Router, which means that the traffic is carried through the VSAT as long as the terrestrial connection is down ●  Differentiated services Code Point (DSCP) 8
  9. 9. Confidential and proprietary information Applications WHAT HAPPEN IF WE NEED TO MIX SEVERAL DIFFERENT NEEDS? ●  Cellular Backhaul (e.g. GSM; UMTS) w/ continuous bandwidth ●  Cellular Backhaul (e.g. 3G/LTE) w/ burst traffic and/or small cells ●  ISP Point of Presence (PoP) ●  Internet access ●  Business Continuity ●  SCPC up to 5, 10, 20, 24 Mbps Inbound (instead of only 2 Mbps) 9
  10. 10. Confidential and proprietary information Thank You Carlos Xavier Jr carlosx@Gilat.com 10