2nd generation dvb interactive satellite system · 2nd generation dvb interactive satellite system...
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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)
Slide 2
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
Slide 3
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!
Slide 4
2nd Generation DVB Interactive Satellite System (DVB-ISS)
Lower Layer for Satellite (LLS)Higher Layer for Satellite (HLS)
Overview and System Specification (OSL)
Slide 5
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
Slide 6
Channels, Interactivity and Systems
Slide 7
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
Slide 8
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
Slide 9
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
Slide 10
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 11
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
Slide 12
Slide 13
Main Enhancements over RCS 1st Gen
Slide 14 14
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
25
30 Attenuation (dB) for PARIS, FR50 GHz40 GHz30 GHz20 GHz15 GHz12 GHz
Rain Attenuation, Paris
Rain Attenuation, Paris
Slide 15
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.
Slide 16
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 17
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
Slide 18
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 19
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.
Slide 20
OSL: System profiles
Defining use of HLS/LLS capabilities and parameters for various applications/markets. Definition of profiles for test and interoperability
Slide 21
How will this go with the new powerful
standard…!?
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