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Copyright © 2005, Nera SatCom AS
DVB-RCS
A versatile standard for all VSAT applications
CABSAT 2006
Dubai, UAE
Thor Reitan, Nera SatCom AS
Copyright © 2005, Nera SatCom AS
DVB-RCS Connectivity
CRA RBDC+VBDC RBDC VBDC FCA
SCPC / CIR / MIR / Pure BoD
QoS / DiffServ Classification / Weighted Fair Sharing
Copyright © 2005, Nera SatCom AS
Internet / Broadband Access
• Enter the access market as an ADSL/ cable gap filler
• Offer affordable broadband for SoHo and SMEs
• Solve ‘next-to-last-mile’bottlenecks for corporate clients
• Modernise and cut costs in traditional VSAT markets
Copyright © 2005, Nera SatCom AS
ADSL over DVB-RCS
WiFi
ADSL Subscribers
Internet
Access AAAAuthenticationAuthorizationAccounting
UDstation
BRAS
PPPoE
CentralAuthentication
LocalAuthentication
UDgateway®
DSLAM
RADIUSServer
QoS
Firewall
Acceleration
Cache/Prefetch
PPPoE Server
Copyright © 2005, Nera SatCom AS
Rural Telecom Applications
“The Rural Telecoms Market can no longer be satisfied with simple telephone solutions.- Now we want TV, phone, and broadband access ! “
DVB-RCS provides all of this ...
Copyright © 2005, Nera SatCom AS
Rural Telecom Applications
Copyright © 2005, Nera SatCom AS
Voice over IP (VoIP) over Satellite• DVB-RCS is capable of supporting Voice over IP (VoIP).
• Support of VoIP is generally a resource management issue• QoS and Bandwidth on Demand (BoD) is required • Dynamic capacity allocation, based on DVB-RCS MAC layer mechanisms• Can use DVB-RCS’ CRA class but this is not very bandwidth efficient.
• For VoIP over DVB-RCS the following issues must be addressed:• Identify proper traffic profile. • Minimize call set-up delay.• Enable QoS.• Minimize jitter.
• Bandwidth Efficiency...• Header Compression• Different Codecs are supported (G.729, G.723, G.711…)• Packetisation is configurable - can trade bandwidth vs. quality
Copyright © 2005, Nera SatCom AS
Voice over IP over Satellite
Copyright © 2005, Nera SatCom AS
IP Multicasting...
• The Nera SatLink system supports:
• Multicasting over IP towards the terminal
• Multicasting over IP from the terminal.
• Broadcasting over IP towards the terminal.
• Uni-casting over IP.
Multicasting / Streaming
Copyright © 2005, Nera SatCom AS
HUB
VSAT
Internet
VSAT
InternetAccessMPEG-4
MPEG-4Encoder
MPEG-4 Decoder
Multicasting / Streaming
Copyright © 2005, Nera SatCom AS
Wi-Fi / WiMax
•
RF Antenna SatLinkTerminal
Billingstad RemoteTest Site
SatLink Gateway
Nittedal Teleport
WiFiAccessPoint
Laptopcomputer
w/ WLAN card
Laptopcomputer
w/ WLAN card
FTP Server10.1.1.240
Copyright © 2005, Nera SatCom AS
GSM over IP over DVB-RCS
• Can be combined with WiFi and other Internet services.
RCST
BTS
WiFi/WiMax
GWY
MSC/ BSC
Abis over IP over DVB-RCS
InternetServices
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Copyright © 2005, Nera SatCom AS
Collaborative Software Applications
• Microsoft Netmeeting• Polycom PVX• MS LiveMeeting• Macromedia Breeze• MS Mediaserver
Copyright © 2005, Nera SatCom AS
Distance Learning Systems
• Class Fronter• Yahoo Groups• MS Learning Gateway
Copyright © 2005, Nera SatCom AS
DVB-S2 Overview
• DVB-S2 is an update of the DVB-S standard and was approved in 2004• Contains improvements on coding, modulation and adaptivity
To the service provider this means:• At least 25-30% more capacity and chargeable bits/s for same cost.
• Same satellite power and bandwidth.• Same code rate and modulation to all users.• More efficient handling IP packets.
• Up to 2,5 times more capacity and chargeable bits/s for same cost.• Same satellite power and bandwidth.• Variable code rate and modulation to all users.
Copyright © 2005, Nera SatCom AS
Defense Applications
•Military and defense communication goes commercial• Major potential application of commercial satellite systems
•Tactical networks can be deployed quickly and reliably• Broadband networks combined with e.g. L-band Inmarsat • Integrated WiFI add mobility, flexibility and capacity. • Coverage on land, air and sea to individual personnel,
larger group and various vehicles.
Copyright © 2005, Nera SatCom AS
DVB-RCS goes maritime• Maritime DVB-RCS equipment is available • Stabilized antenna sizes at ca. 1 meter similar
to Inmarsat.• Equipment cost is similar to Inmarsat (@ L-
band)• Operational costs are lower. • Data rates are higher.
• Maritime Ku-band coverage an issue• Mediterranean or Caribbean coverage may be
sufficient.• Users may not be licensed to use the maritime
equipment close to shore• Common for large ships to install two
antennas• Secures a link to the satellite independent of the
boats position relative to the space segment.
Copyright © 2005, Nera SatCom AS
Onboard Networking
OR
RJ-45RJ-45 RJ-45RJ-45
RJ-45RJ-45
RJ-45RJ-45
RJ-45RJ-45
Copyright © 2005, Nera SatCom AS
NERA first to achieve SatLabs certification !!
Nera SatLink 1910
Nera SatLink 1000
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