A DVB/Inmarsat Hybrid Architecture for Asymmetrical Broadband ...
A DVB/Inmarsat Hybrid Architecture for Asymmetrical Broadband ...
A DVB/Inmarsat Hybrid Architecture for Asymmetrical Broadband ...
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
A <strong>DVB</strong>/<strong>Inmarsat</strong> <strong>Hybrid</strong> <strong>Architecture</strong> <strong>for</strong> <strong>Asymmetrical</strong><br />
<strong>Broadband</strong> Mobile Satellite Services<br />
Bjørn Roger Andersen, Telenor Satellite Services<br />
Odd Gangås, Telenor Satellite Services<br />
Jens Andenæs, Ascentel Ltd.<br />
6th European Workshop on Mobile/Personal Satcoms/2 nd Advanced Satellite Mobile Systems Conference<br />
ESTEC , Noordwijk, The Netherlands,21-22 September 2004
Recent Important Observations in MSS:<br />
• L-band about to be saturated with MSS traffic<br />
• Higher MSS traffic volumes <strong>for</strong>eseen in the future<br />
• MSS Traffic more packet data oriented – Internet Protocol (IP)<br />
• MSS traffic tends to be highly asymmetrical<br />
• Services requiring significantly higher capacity on the satellite link<br />
become more common and significant<br />
Consequences:<br />
• Significantly more spectrum is required in the future – L-band too<br />
restricted <strong>for</strong> future growth<br />
• Must utilise C-band, K u -band, and K a -band to support future growth in<br />
MSS
Major Challenges <strong>for</strong> bringing MSS above L-band:<br />
• Regulatory issues<br />
• Expensive technology development<br />
Technology<br />
• Short term approach:<br />
• System solution combining <strong>Inmarsat</strong> technologies and <strong>DVB</strong> technologies<br />
• <strong>DVB</strong>-S/MPDS hybrid systems<br />
• <strong>DVB</strong>-S2/BGAN hybrid systems<br />
• Longer term approach:<br />
• Develop new standard, preferably open, <strong>for</strong> MSS above L-band<br />
• Enhancement of <strong>DVB</strong>-RCS towards supporting MSS<br />
• Reuse elements from <strong>Inmarsat</strong> technologies<br />
• Optimal adaptation of technology to mobile channels gaining cost-efficiency<br />
• Channel adapted multiplexing of data streams <strong>for</strong> packet data transmissions<br />
• Adaptive coding and modulation
<strong>DVB</strong>/<strong>Inmarsat</strong> <strong>Hybrid</strong> Satellite<br />
System <strong>Architecture</strong>
System Concept<br />
• Bi-directional IP connectivity via<br />
satellite:<br />
<strong>DVB</strong>-S <strong>for</strong>ward channel<br />
<strong>Inmarsat</strong> MPDS return channel<br />
TCP/IP Communication protocol<br />
• <strong>Inmarsat</strong> MPDS <strong>for</strong>ward channel<br />
as backup <strong>for</strong> <strong>DVB</strong>-S <strong>for</strong>ward<br />
channel<br />
<strong>Inmarsat</strong> Satellite<br />
Bi-directional Fleet<br />
MPDS Link<br />
K u -band Satellite<br />
<strong>DVB</strong>-S<br />
Broadcast Link<br />
• TCP acceleration to enhance<br />
TCP/IP end-to-end per<strong>for</strong>mance
System Layout <strong>for</strong> Europe<br />
<strong>Inmarsat</strong> 3 @ 15.5° W Telenor@ 1° W Hot Bird @ 13° E Astra @ 19° E <strong>Inmarsat</strong> 3 @ 64° E<br />
Fleet MPDS<br />
Return Link<br />
Skyplex Uplink<br />
<strong>DVB</strong>-S Downlink<br />
<strong>DVB</strong>-S Forward Link<br />
Fleet MPDS<br />
Return Link<br />
<strong>DVB</strong>-S Forward Link<br />
Fleet MPDS<br />
Forward Link<br />
<strong>Inmarsat</strong> MPDS<br />
SBS/HLES @ Eik<br />
<strong>DVB</strong>-S Uplink<br />
Station @ Nittedal<br />
<strong>DVB</strong>-S Uplink<br />
Station @ Betzdorf<br />
<strong>Inmarsat</strong> MPDS<br />
SBS @ Sentosa<br />
Virtual Private Network<br />
Hub<br />
Station<br />
Leased Line<br />
Leased Line<br />
IP Local Area Network<br />
Internet<br />
e-Applications<br />
Entertainment<br />
TV & Radio<br />
Channels
System <strong>Architecture</strong><br />
C-band or Ku-Band Satellite<br />
<strong>Inmarsat</strong>-3 Satellite<br />
<strong>DVB</strong>-S Forward Link<br />
<strong>Inmarsat</strong> MPDS Link<br />
RF<br />
<strong>DVB</strong>-S<br />
MOD<br />
<strong>DVB</strong>-S<br />
Feed<br />
MPDS<br />
SBS<br />
<strong>Inmarsat</strong><br />
Earth Station<br />
Stabilised C-band or<br />
Ku-band antenna<br />
Fleet or Swift<br />
Antenna<br />
TV<br />
Channels<br />
MPEG2<br />
MUX<br />
IPE<br />
VPN<br />
MPDS<br />
HLES<br />
Traffic<br />
Router<br />
Traffic<br />
Manager<br />
<strong>DVB</strong>-S<br />
Rx<br />
<strong>DVB</strong>-S<br />
IP Rx<br />
MPDS<br />
Transceiver<br />
TCPA<br />
Ethernet<br />
Ethernet<br />
Host Site<br />
Internet<br />
ISP<br />
Remote Site
Hub Station<br />
AAA Server<br />
MPDS HLES<br />
Router<br />
Internet<br />
Skyplex U/L @ Eik<br />
Skyplex<br />
Modulator<br />
IP Encapsulator<br />
Router<br />
KenCast<br />
File Transfer<br />
<strong>DVB</strong>-S U/L @<br />
Nittedal<br />
Leased Line<br />
(IP)<br />
TCP<br />
Accelerator<br />
<strong>DVB</strong>-S U/L @<br />
Betzdorf<br />
Leased Line<br />
(IP)<br />
<strong>DVB</strong>-S/<strong>Inmarsat</strong> <strong>Hybrid</strong> Hub<br />
Traffic<br />
Distributor<br />
Traffic<br />
Manager
Protocol Stack<br />
FNN<br />
CPE<br />
Application<br />
Layer<br />
TCP/UDP<br />
Layer<br />
<strong>DVB</strong>-S Uplink Station<br />
<strong>DVB</strong>-S Receiver<br />
Application<br />
Layer<br />
TCP/UDP<br />
Layer<br />
IP Layer<br />
IP Layer<br />
IP Layer<br />
IP Layer<br />
Ethernet<br />
Frames<br />
Ethernet<br />
Frames<br />
MPE Layer<br />
MPEG-2<br />
TS Layer<br />
<strong>DVB</strong>-S<br />
Physical Layer<br />
C-band or<br />
Ku-band<br />
Satellite<br />
Physical Layer<br />
MPE Layer<br />
MPEG-2<br />
TS Layer<br />
<strong>DVB</strong>-S<br />
Physical Layer<br />
Ethernet<br />
Frames<br />
Ethernet<br />
Frames<br />
FNN<br />
Application<br />
Layer<br />
TCP/UDP<br />
Layer<br />
MPDS HLES<br />
MPDS SBS<br />
MPDS Terminal<br />
IP Layer<br />
IP Layer<br />
IP Layer<br />
PPP Layer<br />
PPP Layer<br />
PPP Layer<br />
PPP Layer<br />
Terrestrial<br />
Connection<br />
Terrestrial<br />
Connection<br />
L2TP<br />
Terrestrial<br />
Connection<br />
L2TP<br />
Terrestrial<br />
Connection<br />
Data Link<br />
Layer<br />
MPDS<br />
Physical Layer<br />
<strong>Inmarsat</strong>-3<br />
Satellite<br />
Physical Layer<br />
Data Link<br />
Layer<br />
MPDS<br />
Physical Layer<br />
Ethernet<br />
Frames
Layered System Description<br />
Content Delivery Services Connectivity Transportation Connectivity Services<br />
Audio & Video<br />
Files<br />
Internet<br />
IP<br />
Streaming<br />
File<br />
Transfer<br />
KenCast FAZZT<br />
<strong>DVB</strong>-S Uplink<br />
IPE<br />
MUX<br />
<strong>DVB</strong>-S Formatting<br />
MPEG2 TS Matrix<br />
RF Uplink Equipment<br />
C- or Ku-Band<br />
Satellite<br />
<strong>DVB</strong>-S/IP<br />
Receiver<br />
KenCast<br />
Client SW<br />
Receiver<br />
Client SW<br />
File<br />
Download<br />
IP<br />
Streamig<br />
WEB<br />
Content<br />
Filter<br />
File<br />
Transfer<br />
Loading<br />
Client<br />
Multi-Media<br />
Portal<br />
Internet<br />
TCP<br />
Accelerator<br />
Traffic<br />
Router<br />
MPDS SBS<br />
MPDS HLES<br />
MPDS Transceiver<br />
INMARSAT-3<br />
Satellite<br />
Transceiver<br />
Client SW<br />
Traffic Manager<br />
Client SW<br />
TCP Accelerator<br />
Client SW<br />
Internet<br />
Content<br />
Data<br />
Traffic<br />
Manager<br />
Host Site<br />
User Site
Client Equipment Layout <strong>for</strong> Maritime<br />
CTE<br />
Ku-Band Fleet<br />
Ku-band Fleet 55<br />
<strong>DVB</strong>-S<br />
TV Receiver<br />
Fleet<br />
Transceiver<br />
<strong>DVB</strong>-S<br />
IP Receiver<br />
CPE<br />
PC LAN<br />
Master PC
Services and Applications<br />
• Professional<br />
– HQ/Office connectivity <strong>for</strong> fax, data and email<br />
– Internet access<br />
– Large file transfers (to vessels)<br />
• Leisure<br />
– Internet access<br />
– Email access<br />
– IP streaming of audio and video<br />
– Large file downloads<br />
……along with satellite TV
Benefits<br />
• No international frequency co-ordination/licensing<br />
• Better per<strong>for</strong>mance (512 – 4096 kbit/s) on satellite-to-vessel link<br />
than standard MPDS (< 64 kbit/s)<br />
• Lower cost on satellite-to-vessel link than standard MPDS<br />
– 88 % cost reduction <strong>for</strong> asymmetrical traffic (300 Mbytes traffic<br />
volume per month)<br />
• May utilise already installed K u -band TV receive antenna and<br />
<strong>Inmarsat</strong> Fleet terminals<br />
• Can receive satellite TV and data simultaneously using one single<br />
K u -band antenna with twin-head feed<br />
• Compatible with full suite of <strong>Inmarsat</strong> Fleet and Swift standards<br />
• Multiple equipment manufacturers support the <strong>Inmarsat</strong> Fleet<br />
standards and the <strong>DVB</strong>-S ETSI standard utilised by the service
Acknowledgements
Change language