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Converged Media Networks How broadcast quality video and voice/data services can be integrated in a broadcast environment. Convergence?. WHY Convergence? HOW Convergence? WHEN Convergence?. Point-to-point Unidirectional Handles one service. Traditional media network design. - PowerPoint PPT Presentation
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©Net Insight AB
Converged Media NetworksHow broadcast quality video and voice/data services can be integrated in a broadcast environment
Converged Media Networks ©Net Insight Inc.
Convergence?
• WHY Convergence?• HOW Convergence?• WHEN Convergence?
Converged Media Networks ©Net Insight Inc.
Traditional media network design
• Point-to-point• Unidirectional• Handles one service
Converged Media Networks ©Net Insight Inc.
Traditional media network design
• Complexity grows linearly– Costs grow linearly– Operation costs grow linearly
• Long provisioning times• Complex resource management• Inflexible
Converged Media Networks ©Net Insight Inc.
Traditional media network design
• Adding new services further complicates network– Multiple systems to operate, support,
educate, have spares etc etc
Converged Media Networks ©Net Insight Inc.
Converged media network
• Topology defines your bandwidth resources– Operator works with service and
resource management• Bandwidth can be used for
Video/Data/Voice– One network to manage– Service ubiquitous (Ethernet, ASI, SDI,
T1….)
Converged Media Networks ©Net Insight Inc.
Converged media network
• Switched network– Fast provisioning (minutes instead of
weeks/months)– Flexible– Any to any connectivity– Multicast capability (save on capacity)
©Net Insight AB
Improve existing infrastructure
TDM channelization with GMPLS interface
- Improved utilization
- 100% QoS
- Traffic engineering
- Multicast
Converged Media Networks ©Net Insight Inc.
Broadband networking of today
Guaranteed ServiceHigh reliability
Packet SwitchingPacket SwitchingSynchronous TDMSynchronous TDM
SDH/SONETSDH/SONET ATMATM Gigabit EthernetGigabit Ethernet
InexpensiveFlexibility
Best of both worlds neededGuaranteed QoS
Dynamic Provisioning Simple and flexible SLAs
Real-time supportTraffic Engineering
ExpensiveFlexibility
Converged Media Networks ©Net Insight Inc.
Sources: Bennett, et al, “Delay Jitter Bounds and Packet Scale Rate Guarantee for Expedited Forwarding”, INFOCOM 2001.Charny and Le Boudec, “Delay Bounds in Network with Aggregate Scheduling”, QoFIS 2000, Berlin, Germany.Willinger, et al, “Self-Similarity Through High-Variability: Statistical Analysis of Ethernet LAN Traffic at Source Level”, IEEE/ACM Transactions on Networking, Vol.. 5, No. 1, 1997
Utilization degradation in packet-switch networks
2 ports
Infinite number of ports
0
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0,2
0,3
0,4
0,5
0,6
0,7
0,8
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1 2 3 4 6 8 10 12 14 16
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Converged Media Networks ©Net Insight Inc.
Enhancing existing infrastructure
IPIP
+Cost efficient production of best effort services Highly flexibleWidely supported de-facto standard
+Very reliable and robust bulk transportGood timing characteristics
-Not very suitable for real time sensitive data (video)100% QoS does not work when prioritized traffic dominatesPrioritization requires intensive and costly traffic engineering
-Low granularity, unsuitable for most end user needsOften low utilization due to bulky capacity stepsStatic configurations with low flexibility
SDH / SONETSDH / SONET
Current situation- Significant investments in IP and
SDH/Sonet platforms
Converged Media Networks ©Net Insight Inc.
+Cost efficient production of best effort services Highly flexibleWidely supported de-facto standard
+Very reliable and robust bulk transportGood time characteristics
IPIP
+Fully protected channels are ideal for real time sensitive data (video)100% QoS is guaranteed even at full network loadPrioritization by channelization is easy to set up and manage
-Low granularity, unsuitable for most end user needsOften low utilization due to bulky capacity stepsStatic configurations with low flexibility
TDM based channelization with high granularity and flexibilityTDM based channelization with high granularity and flexibility
SDH / SONETSDH / SONET
Adding service-adapted TDM channelization
eliminates previous limitations
Enhancing existing infrastructure
Converged Media Networks ©Net Insight Inc.
+Cost efficient production of best effort services Highly flexibleWidely supported de-facto standard
+Very reliable and robust bulk transportGood time characteristics
IPIP
+Fully protected channels are ideal for real time sensitive data (video)100% QoS is guaranteed even at full network loadPrioritization by channelization is easy to set up and manage
-Low granularity, unsuitable for most end user needsOften low utilization due to bulky capacity stepsStatic configurations with low flexibility
TDM based channelization with high granularity and flexibilityTDM based channelization with high granularity and flexibility
SDH / SONETSDH / SONET
And these limitationsbecome insignificant
Enhancing existing infrastructure
Converged Media Networks ©Net Insight Inc.
+Cost efficient production of best effort services Highly flexibleWidely supported de-facto standard
+Very reliable and robust bulk transportGood time characteristics
IPIP
+Fully protected channels are ideal for real time sensitive data (video)100% QoS is guaranteed even at full network loadPrioritization by channelization is easy to set up and manage
-Low granularity, unsuitable for most end user needsOften low utilization due to bulky capacity stepsStatic configurations with low flexibility
TDM based channelization with high granularity and flexibilityTDM based channelization with high granularity and flexibility
SDH / SONETSDH / SONET
Enable new services to existing customers- 100% QoS VPN, bandwidth on demand, streaming
video etc
Enhancing existing infrastructure
Converged Media Networks ©Net Insight Inc.
+Cost efficient production of best effort services Highly flexibleWidely supported de-facto standard
+Very reliable and robust bulk transportGood time characteristics
IPIP
+Fully protected channels are ideal for real time sensitive data (video)100% QoS is guaranteed even at full network loadPrioritization by channelisation is easy to set up and manage
-Low granularity, unsuitable for most end user needsOften low utilization due to bulky capacity stepsStatic configurations with low flexibility
TDM based channelization with high granularity and flexibilityTDM based channelization with high granularity and flexibility
SDH / SONETSDH / SONET
Also enabling new media services- utilize existing media interfaces
SDI / ASI SDI / ASI
Enhancing existing infrastructure
Converged Media Networks ©Net Insight Inc.
Channelization of bandwidth
DTM channel A - ISP 1
DTM channel B - ISP 2(best effort)
DTM channel C - PTT 1
IP IP IP
IPIPIPIP
IPIP
IP IP IP IP
Contribution Video
Data(shared channel)
Voice
TV distribution(multicast)
4-6 Mbps MPEG
4-6 Mbps MPEG
Fiber or
4-6 Mbps MPEG
4-6 Mbps MPEG
Converged Media Networks ©Net Insight Inc.
GMPLS Objectives
• MPLS objectives
• Traffic engineering
• VPN possibilities
• GMPLS additions - including TDM, WDM and fiber
• On-demand service provisioning
• Resource reservation
• QoS guarantees
• Multicast
• Topology independence - Ring & Mesh
Converged Media Networks ©Net Insight Inc.
Next generation optical networking
• IP is already the general purpose service interface
• Ethernet is the datacom interface
• SDI, ASI and Gigabit Ethernet will be the media interfaces
• Sonet/SDH is the legacy transport technology for fiber based networks DWDM transport
• GMPLS for signalling interoperability
• GMPLS-aware TDM based resource reservation enable 100% QoS, provisioning, multicast and SLA (billing) support for both streaming and datacom services.
Ethernet / IPEthernet / IP
Sonet / SDHSonet / SDH
TDM based channelization TDM based channelization
Fiber / DWDMFiber / DWDM
ApplicationsApplications
PDHPDH SDI / ASISDI / ASIG
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L
S
G
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P
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©Net Insight AB
Optical networking
- Next generation optical transport technology
- Technology basics
Converged Media Networks ©Net Insight Inc.
A non-hierarchical structure for sending data
Dynamic synchronous Transfer Mode• One-way channels (n*512 kbps “steps” up to
link speed)
• 64 bits in a slot, approximately 4500 slots/frame
• 8000 frames/s• Control channels / Data channels
STM16/OC48link rate
125 s frames
64 bit time slots
Converged Media Networks ©Net Insight Inc.
DTM channels
• Unidirectional, from sender to receiver• Multirate, from 512 kbps to link speed• Multicast, from one sender to many
receivers• Guaranteed service
• Unidirectional, from sender to receiver• Multirate, from 512 kbps to link speed• Multicast, from one sender to many
receivers• Guaranteed service
Control channel
1 Mbps channel
2 Mbps channel
4.5 Mbps channel
Converged Media Networks ©Net Insight Inc.
• Topologies
Ring
Dual ring
Point-to-point
Dual bus
any mix
• Topologies
Ring
Dual ring
Point-to-point
Dual bus
any mix X
X X
Scalability - Topology independentBuilt-in topology discovery
Converged Media Networks ©Net Insight Inc.
Reliable Services - Restoration
X
X X
• Automatic failure discovery• Automatic restoration• Prioritised channels are set-up first• Crank-back function
X
X
X
X
Converged Media Networks ©Net Insight Inc.
Scalability - Automatic synchronisation
• Plug and play• Automatically builds
a minimal spanning tree from active reference clock to all nodes
• Automatically handles clock, node or link failures
• Maintain frequency and phase continuity during transient states
• Plug and play• Automatically builds
a minimal spanning tree from active reference clock to all nodes
• Automatically handles clock, node or link failures
• Maintain frequency and phase continuity during transient states
0
1
Converged Media Networks ©Net Insight Inc.
Nimbra One – Multiservice platform
“[CBC] explored the technology from the point of view
of quality of service, whether it could merge all traffic –
video, audio, radio and voice and data – into the same
pipe. The test was successful”
Anthony Caruso, Director of Technology and systems, CBC/Radio-Canada.
Network World Canada, August 22, 2003
Converged Media Networks ©Net Insight Inc.
Contact
Erling Hedkvist
erling.hedkvist@netinsight.net
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