1. Converged Media Networks
How broadcast quality video and voice/data services can be integrated in a broadcast environment

2. WHY Convergence? HOW Convergence? WHEN Convergence? Convergence?
The holy grale?

3. Traditional media network design
Point-to-point
Unidirectional
Handles one service

4. Traditional media network design
Complexity grows linearly
Costs grow linearly
Operation costs grow linearly
Long provisioning times
Complex resource management
Inflexible
Hub and spoke design

5. Traditional media network design
Adding new services further complicates network
Multiple systems to operate, support, educate, have spares etc etc
One of the strongest arguments of convergence is of course that less equipment is necessary. Less equipment to operate, support, have spares for, train people on etc etc. An economical incentive.
One network for Data, Video and Voice. Division between IT and Video department. One does not understand the other. Media very point-to-point oriented. IT department network oriented. Media understands QoS, IT does not.

6. 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….)

7. Converged media network
Switched network
Fast provisioning (minutes instead of weeks/months)
Flexible
Any to any connectivity
Multicast capability (save on capacity)
Bottom line. Traditional networks are not suited for the needs of the modern broadcast industry. Flexibility (fast provisioning, service ubiquitous, ) Cost efficient, Scalable and Future proof (Much easier to be future proof with a digital network)

8. Improve existing infrastructure
TDM channelization with GMPLS interface
- Improved utilization
- 100% QoS
- Traffic engineering
- Multicast

9. Broadband networking of today
Synchronous TDM
Packet Switching
SDH/SONET
ATM
Gigabit Ethernet
Guaranteed Service
High reliability
Expensive
Flexibility
Inexpensive
Flexibility
Best of both worlds needed Guaranteed QoS
Dynamic Provisioning
Simple and flexible SLAs
Real-time support
Traffic Engineering

10. Utilization degradation in packet-switch networks1
0,9
0,8
0,7
0,6
Utilization
0,5
0,4
0,3
0,2
0,1 1 2 3 4 6 8 10 12 14 16
Hops
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
2 ports
Infinite number of ports

11. Enhancing existing infrastructure+
Cost efficient production of best effort services
Highly flexible
Widely supported de-facto standard
Very reliable and robust bulk transport
Good timing characteristics
Current situation
- Significant investments in IP and SDH/Sonet platforms -
Not very suitable for real time sensitive data (video)
100% QoS does not work when prioritized traffic dominates
Prioritization requires intensive and costly traffic engineering
Low granularity, unsuitable for most end user needs
Often low utilization due to bulky capacity steps
Static configurations with low flexibility IP
SDH / SONET

12. Enhancing existing infrastructure+
Cost efficient production of best effort services
Highly flexible
Widely supported de-facto standard
Very reliable and robust bulk transport
Good time characteristics
Adding service-adapted TDM channelization eliminates previous limitations +
Fully protected channels are ideal for real time sensitive data (video)
100% QoS is guaranteed even at full network load
Prioritization by channelization is easy to set up and manage -
Low granularity, unsuitable for most end user needs
Often low utilization due to bulky capacity steps
Static configurations with low flexibility IP
TDM based channelization with high granularity and flexibility
SDH / SONET

13. Enhancing existing infrastructure+
Cost efficient production of best effort services
Highly flexible
Widely supported de-facto standard
Very reliable and robust bulk transport
Good time characteristics +
Fully protected channels are ideal for real time sensitive data (video)
100% QoS is guaranteed even at full network load
Prioritization by channelization is easy to set up and manage -
Low granularity, unsuitable for most end user needs
Often low utilization due to bulky capacity steps
Static configurations with low flexibility
And these limitations
become insignificant IP
TDM based channelization with high granularity and flexibility
SDH / SONET

14. Enhancing existing infrastructure+
Cost efficient production of best effort services
Highly flexible
Widely supported de-facto standard
Very reliable and robust bulk transport
Good time characteristics
Enable new services to existing customers
- 100% QoS VPN, bandwidth on demand, streaming video etc +
Fully protected channels are ideal for real time sensitive data (video)
100% QoS is guaranteed even at full network load
Prioritization by channelization is easy to set up and manage -
Low granularity, unsuitable for most end user needs
Often low utilization due to bulky capacity steps
Static configurations with low flexibility IP
TDM based channelization with high granularity and flexibility
SDH / SONET

15. Enhancing existing infrastructure+
Cost efficient production of best effort services
Highly flexible
Widely supported de-facto standard
Very reliable and robust bulk transport
Good time characteristics
Also enabling new media services
- utilize existing media interfaces +
Fully protected channels are ideal for real time sensitive data (video)
100% QoS is guaranteed even at full network load
Prioritization by channelisation is easy to set up and manage -
Low granularity, unsuitable for most end user needs
Often low utilization due to bulky capacity steps
Static configurations with low flexibility IP
SDI / ASI
TDM based channelization with high granularity and flexibility
SDH / SONET

16. Channelization of bandwidth
4-6 Mbps MPEG
TV distribution (multicast)
4-6 Mbps MPEG
4-6 Mbps MPEG
4-6 Mbps MPEG
DTM channel A - ISP 1
Fiber or l
Contribution Video IP
Data (shared channel) IP IP IP
DTM channel B - ISP 2 (best effort) IP IP IP IP IP IP IP IP IP
Voice
DTM channel C - PTT 1

17. 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

18. 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.
Applications G M P L S
Ethernet / IP
PDH
SDI / ASI
TDM based channelization
Sonet / SDH
Fiber / DWDM

19. Optical networking
- Next generation optical transport technology
- Technology basics

20. A non-hierarchical structure for sending data
125 s frames
64 bit time slots
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
Unidirectional channels: (Inet server/ADSL-modem)
- Higher bandwidth out from a server
- Lower in
125 us frames:
- from the telephony world
frames/s
HOW MANY CONTROL SLOTS
- 5 nodes
- 5 control slots
STM16/OC48 link rate

21. DTM channels Unidirectional, from sender to receiver
Control channel
1 Mbps channel
2 Mbps channel
4.5 Mbps channel
Unidirectional, from sender to receiver
Multirate, from 512 kbps to link speed
Multicast, from one sender to many receivers
Guaranteed service

22. Scalability - Topology independent
Built-in topology discovery
Topologies
Ring
Dual ring
Point-to-point
Dual bus
any mix X X X

23. Reliable Services - RestorationX X X
Automatic failure discovery
Automatic restoration
Prioritised channels are set-up first
Crank-back function X X X X

24. 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 1

25. 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

26. Contact
Erling Hedkvist