Copyright © Digital Video Broadcasting Project DVB

2nd Generation DVB Interactive Satellite System

Dr Harald Skinnemoen (AnsuR, Representing SatLabs)Chairman DVB TM-RCS (contact: harald@ansur.no)

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2nd generation DVB Interactive Satellite System

State-of-the art technology Substantial enhancements

over 1st generation DVB-RCS

2011: First phase DVB-RCS2 completed /approved January

Commercial name DVB-RCS2DVB-ISS is an abbreviation of the ETSI Work Item & Document title

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DVB Satellite Standards - Always Leading the Way ;-)

First DVB standardDVB-S

First DVB interactiveDVB-RCS

First 2nd genDVB-S2

First 2nd gen interactiveDVB-RCS2

Satellites are the best!

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2nd Generation DVB Interactive Satellite System (DVB-ISS)

Lower Layer for Satellite (LLS)Higher Layer for Satellite (HLS)

Overview and System Specification (OSL)

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2nd Generation DVB Interactive Satellite System (DVB-ISS)

Lower Layer for Satellite (LLS)Higher Layer for Satellite (HLS)

Overview and System Specification (OSL)

Overview of System

Definition of Profiles and Terminal Capabilities

Interoperability Management Migration Scenarios from DVB-RCS

Reference System Architecture

Network Layer Functions

Two-Way Interactive Satellite System Models

Forward Link

Return Link Signalling Forward Link Signalling

Layer 2 Management and SupervisionManagement, FCAPS, Object Models, OSS-NMC, Protocols

Installation, Motor, SW Update, Configuration, Logon Mobile Terminals

SecurityMesh Networks

Addressing

HS

Addressing

Return Link PhysicalChannel

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Channels, Interactivity and Systems

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2nd Generation DVB Interactive Satellite System (DVB-ISS)

Lower Layer for Satellite (LLS)Higher Layer for Satellite (HLS)

Overview and System Specification (OSL)Overview of System

Definition of Profiles and Terminal Capabilities

Consumer SCADA

Multi-dwelling

Corporate

BackhaulInstitutional

Interoperability Management Migration Scenarios from DVB-RCS

Reference System Architecture

Network Layer Functions

Addressing Routing

Quality of Service Operator Virtual Networks

IPv4/v6 issues Interfaces

Two-Way Interactive Satellite System Models

Return Link Physical Forward Link

Return Link Signalling Forward Link Signalling

Layer 2 Management and SupervisionManagement, FCAPS, Object Models, OSS-NMC, Protocols

Installation, Motor Antenna, SW Update, Configuration, Logon Mobile Terminals

SecurityMesh Networks

Coding and Interleaving

Modulation(QPSK/QAM - CPM)

Addressing

Dedicated / Random Access Control

Addressing

HS

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Overview and System Specification (OSL)

Overview of System

Definition of Profiles and Terminal Capabilities

Consumer SCADA

Multi-dwelling

Corporate

BackhaulInstitutional

Interoperability Management

Migration Scenarios from DVB-RCS

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Lower Layer for Satellite (LLS)

Two-Way Interactive Satellite System Models

Return Link Physical Forward Link

Return Link Signalling Forward Link Signalling

Layer 2 Management and Supervision

Mobile Terminals

Security

Coding and Interleaving

Modulation(QPSK/QAM - CPM)

Addressing

Dedicated / Random Access Control

Addressing

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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

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The Specifications of 1st and 2nd Generation

1st Generation – single documentInteraction channel for satellite distribution systemsCommercial name DVB-RCS. ETSI number EN 301 790

2nd Generation – multipart documentSecond 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 SatelliteThe specification is for a two-way system

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Main Enhancements over RCS 1st Gen

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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

0

5

10

15

20

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30 Attenuation (dB) for PARIS, FR50 GHz40 GHz30 GHz20 GHz15 GHz12 GHz

Rain Attenuation, Paris

Rain Attenuation, Paris

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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 16QAMPer-timeslot ACM configuration

more granular and flexible just-in- time timeslot adaptation.

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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

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Coding / Carrier / Access

16-state turbo

codefor QPSK, 8PSK and 16QAM benefits substantially from last decade coding development

Random Access option for SCADA / intermittent datamore responsive - less delay

DVB-S2 Continuous Carrier return link (planned)option in adaptive or variable mode (ACM/VCM) From RCS+MDVB-S2 adapted to low rates.

Power headroom reporting. EIRP control alternativeConstant power spectrum density for carriers of different BW Constant EIRP

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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

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Security, Installation, IPv6

Improved securityNot one specific technology

Careful review of all technologies and overall architecture

The strong governmental markets position is maintained

Simplified antenna installationPossible use of motors for adjusting pointing.

Improved QoS architectureSupport for cross-layer optimizationPerformance enhancing proxies.

IPv6 SupportAnd specifications for addressing, routing and management.

Improved securityNot one specific technology

Careful review of all technologies and overall architecture

The strong governmental markets position is maintained

Simplified antenna installationPossible use of motors for adjusting pointing.

Improved QoS architectureSupport for cross-layer optimizationPerformance enhancing proxies.

IPv6 SupportAnd specifications for addressing, routing and management.

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OSL: System profiles

Defining use of HLS/LLS capabilities and parameters for various applications/markets. Definition of profiles for test and interoperability

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How will this go with the new powerful

standard…!?