Converged Media Networks
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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.

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Converged media networks

Converged Media Networks

How broadcast quality video and voice/data services can be integrated in a broadcast environment


Convergence

Convergence?

  • WHY Convergence?

  • HOW Convergence?

  • WHEN Convergence?


Traditional media network design

Point-to-point

Unidirectional

Handles one service

Traditional media network design


Traditional media network design1

Traditional media network design

  • Complexity grows linearly

    • Costs grow linearly

    • Operation costs grow linearly

  • Long provisioning times

  • Complex resource management

  • Inflexible


Traditional media network design2

Traditional media network design

  • Adding new services further complicates network

    • Multiple systems to operate, support, educate, have spares etc etc


Converged media network

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 network1

Converged media network

  • Switched network

    • Fast provisioning (minutes instead of weeks/months)

    • Flexible

    • Any to any connectivity

    • Multicast capability (save on capacity)


Converged media networks

Improve existing infrastructure

TDM channelization with GMPLS interface

- Improved utilization

- 100% QoS

- Traffic engineering

- Multicast


Broadband networking of today

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 neededGuaranteed QoS

Dynamic Provisioning

Simple and flexible SLAs

Real-time support

Traffic Engineering


Utilization degradation in packet switch networks

Utilization degradation in packet-switch networks

1

0,9

0,8

0,7

0,6

Utilization

0,5

0,4

0,3

0,2

0,1

0

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


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

-

Not very suitable for real time sensitive data (video)

100% QoS does not work when prioritizedtraffic 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

Enhancing existing infrastructure

Current situation

- Significant investments in IP and SDH/Sonet platforms

IP

SDH / SONET


Enhancing existing infrastructure1

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

Adding service-adapted TDM channelization eliminates previous limitations

IP

TDM based channelization with high granularity and flexibility

SDH / SONET


Enhancing existing infrastructure2

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


Enhancing existing infrastructure3

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


Enhancing existing infrastructure4

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


Channelization of bandwidth

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

IP

IP

IP

DTM channel B - ISP 2(best effort)

Data(shared channel)

IP

IP

IP

IP

IP

IP

IP

IP

IP

Voice

DTM channel C - PTT 1


Gmpls objectives

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


Next generation optical networking

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


Converged media networks

Optical networking

- Next generation optical transport technology

- Technology basics


A non hierarchical structure for sending data

A non-hierarchical structure for sending data

125 s frames

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

64 bit time slots

STM16/OC48link rate


Dtm channels

DTM channels

  • 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


Scalability topology independent

Scalability - Topology independent

Built-in topology discovery

  • Topologies

    • Ring

    • Dual ring

    • Point-to-point

    • Dual bus

    • any mix

X

X

X


Reliable services restoration

Reliable Services - Restoration

X

X

X

Automatic failure discovery

Automatic restoration

Prioritised channels are set-up first

Crank-back function

X

X

X

X


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

Scalability - Automatic synchronisation

0

1


Nimbra one multiservice platform

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


Contact

Contact

Erling Hedkvist

[email protected]


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