2 nd Generation DVB Interactive Satellite System Dr Harald Skinnemoen (AnsuR, Representing SatLabs) Chairman DVB TM-RCS (contact: harald@ansur.no) Copyright Digital Video Broadcasting Project DVB
2 nd generation DVB Interactive Satellite System State-of-the art technology Substantial enhancements over 1 st generation DVB-RCS 2011: First phase DVB-RCS2 completed /approved January Commercial name DVB-RCS2 DVB-ISS is an abbreviation of the ETSI Work Item & Document title Slide 2
DVB Satellite Standards - Always Leading the Way ;-) First DVB standard DVB-S First DVB interactive DVB-RCS First 2 nd gen DVB-S2 First 2 nd gen interactive DVB-RCS2 Satellites are the best! Slide 3
2nd Generation DVB Interactive Satellite System (DVB-ISS) Overview and System Specification (OSL) Higher Layer for Satellite (HLS) Lower Layer for Satellite (LLS) Slide 4
2nd Generation DVB Interactive Satellite System (DVB-ISS) Overview and System Specification (OSL) Overview of System Definition of Profiles and Terminal Capabilities Interoperability Management Migration Scenarios from DVB-RCS Higher Layer for Satellite (HLS) Reference System Architecture Lower Layer for Satellite (LLS) Two-Way Interactive Satellite System Models Addressing Addressing Network Layer Functions Return Link Physical Channel Forward Link Return Link Signalling Forward Link Signalling Management, FCAPS, Object Models, OSS-NMC, Protocols Installation, Motor, SW Update, Configuration, Logon Mesh Networks Layer 2 Management and Supervision Mobile Terminals Security Slide 5 HS
Channels, Interactivity and Systems Slide 6
2nd Generation DVB Interactive Satellite System (DVB-ISS) Overview and System Specification (OSL) Overview of System Definition of Profiles and Terminal Capabilities Consumer Corporate SCADA Multi-dwelling Institutional Backhaul Interoperability Management Migration Scenarios from DVB-RCS Higher Layer for Satellite (HLS) Reference System Architecture Lower Layer for Satellite (LLS) Two-Way Interactive Satellite System Models Addressing Network Layer Functions Routing Return Link Physical Addressing Dedicated / Random Access Control Forward Link Addressing Quality of Service IPv4/v6 issues Operator Virtual Networks Interfaces Coding and Interleaving Modulation (QPSK/QAM - CPM) Return Link Signalling Forward Link Signalling Management, FCAPS, Object Models, OSS-NMC, Protocols Installation, Motor Antenna, SW Update, Configuration, Logon Layer 2 Management and Supervision Mobile Terminals Mesh Networks Security Slide 7 HS
Overview and System Specification (OSL) Overview of System Definition of Profiles and Terminal Capabilities Consumer Corporate SCADA Multi-dwelling Institutional Backhaul Interoperability Management Migration Scenarios from DVB-RCS Slide 8
Lower Layer for Satellite (LLS) Two-Way Interactive Satellite System Models Return Link Physical Addressing Forward Link Addressing Dedicated / Random Access Control Coding and Interleaving Modulation (QPSK/QAM - CPM) Return Link Signalling Forward Link Signalling Layer 2 Management and Supervision Mobile Terminals Security Slide 9
Higher Layer for Satellite (HLS) Reference System Architecture Network Layer Functions Addressing Routing Quality of Service Virtual Satellite Networks IPv4/v6 issues Interfaces Management, FCAPS, Object Models, OSS-NMC, Protocols Installation, Motor Antenna, SW Update, Configuration, Logon Mesh Networks Slide 10
The Specifications of 1 st and 2 nd Generation 1 st Generation single document Interaction channel for satellite distribution systems Commercial name DVB-RCS. ETSI number EN 301 790 2 nd Generation multipart document Second Generation DVB Interactive Satellite System Overview and System Specification (OSL) Higher Layer Satellite Specification (HLS) Lower Layer Satellite Specification (LLS) (replaces EN301790) Commercial name DVB-RCS2. ETSI number xx 101 545 RCS = Return Channel Satellite The specification is for a two-way system Slide 11
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Main Enhancements over RCS 1 st Gen Slide 13
Rain Attenuation, Paris 30 25 20 Attenuation (db) for PARIS, FR 50 GHz 40 GHz 30 GHz 20 GHz 15 GHz 12 GHz Rain Attenuation, Paris 15 10 5 0 99 99.1 99.2 99.3 99.4 99.5 99.6 99.7 99.8 99.9 100 Percent of Time Not Exceeded Slide 14 14
Adaptive Coding and Modulation (ACM) Optimizes performance to the available capacity rather than worst-case scenario. Significant increase in capacity/availability Forward link DVB-S2. ACM, VCM Return link modulation CPM, QPSK, 8PSK and 16QAM Per-timeslot ACM configuration more granular and flexible just-intime timeslot adaptation. Slide 15
Continuous Phase Modulation (CPM) 4-state modulation Innovative weighted average pulse shape CPM may give lower-cost terminals Non-linear signals > cheaper amplifiers Terminals support both modulations ODU instabilities make CPM relatively better Higher spectral efficiency favors QAM Slide 16
Coding / Carrier / Access 16-state turbo code for QPSK, 8PSK and 16QAM benefits substantially from last decade coding development Random Access option for SCADA / intermittent data more responsive - less delay DVB-S2 Continuous Carrier return link (planned) option in adaptive or variable mode (ACM/VCM) From RCS+M DVB-S2 adapted to low rates. Power headroom reporting. EIRP control alternative Constant power spectrum density for carriers of different BW Constant EIRP Slide 17
Generic Stream Encapsulation (GSE) Generic Stream Encapsulation (GSE) with strengthened integrity control in forward link. Return link packet encapsulation (RLE) is adaptation of GSE. Saves significant overhead Slide 18
Security, Installation, IPv6 Improved security Not one specific technology Careful review of all technologies and overall architecture The strong governmental markets position is maintained Simplified antenna installation Possible use of motors for adjusting pointing. Improved QoS architecture Support for cross-layer optimization Performance enhancing proxies. IPv6 Support And specifications for addressing, routing and management. Slide 19
OSL: System profiles Defining use of HLS/LLS capabilities and parameters for various applications/markets. Definition of profiles for test and interoperability Slide 20
Slide 21 How will this go with the new powerful standard!?