Telecommunications Industry AssociationTR-30.3/07-04-003
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Telecommunications Industry AssociationTR-30.3/07-04-003. ITU-T G.1050/TIA-921 IP Network Model Overview. February 22, 2007 Jack Douglass Chairman TR30.3 Director Technical Marketing Spirent Communications. Network Architecture Types of Access Links QoS controlled Edge Routing

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Telecommunications Industry AssociationTR-30.3/07-04-003

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Telecommunications industry association tr 30 3 07 04 003

Telecommunications Industry AssociationTR-30.3/07-04-003


Itu t g 1050 tia 921 ip network model overview

ITU-T G.1050/TIA-921 IP Network Model Overview

February 22, 2007

Jack Douglass

Chairman TR30.3

Director Technical Marketing

Spirent Communications


Network impairments and parameters that affect video quality

Network Architecture

Types of Access Links

QoS controlled Edge Routing

MTU Size

Packet Loss (Frame Loss)

Out of order packets

One Way Delay (Latency)

Variable Delays (Jitter)

Occupancy (Background Traffic, Congestion, Network Load)

Route Flapping

Network faults

Link Failures

Signaling protocol issues

Video Only Impairments

Video coding algorithms

Fixed, Variable, Capped Bit Rate

Transcoding

Network Impairments and Parameters that Affect Video Quality


Itu t g 1050 and tia 921 ip network model

1000BaseX

100BaseT Switch

100BaseT Hub

10BaseT

WLAN (~4Mbps)

-----------------

Occupancy level

Packet loss

64kbps

128kbps

256kbps

384kbps

512kbps

768kbps

T1/E1

T3/E3

xDSL

Cable

Fiber

----------------

Occupancy level

Qos Edge Router

ITU-T G.1050 and TIA-921 IP Network Model

Core IP

Network

LAN A

LAN B

DUT

B

Local

Access

A

Local

Access

B

DUT

A

64kbps

128kbps

256kbps

384kbps

512kbps

768kbps

T1/E1

T3/E3

xDSL

Cable

Fiber

----------------

Occupancy level

Qos Edge Router

Route flapping

Link Failures

One-way delay

Jitter

Packet loss

Packet Reorder

1000BaseX

100BaseT Switch

100BaseT Hub

10BaseT

WLAN (~4Mbps)

-----------------

Occupancy level

Packet loss

General Model for Voice, Data or Video


Tia 921a pn 3 0062rv2 new ip network impairment model for iptv

TIA-921A (PN-3-0062RV2)New IP Network Impairment Model for IPTV

Core IP

Network

DUT

A

LAN B

DUT

B

Local

Access

B

ADSL2

Bonded ADSL2

VDSL

WiMax

3G Wireless

Cable

PON

----------------

Occupancy level

Qos Edge Router

Route flapping

Link Failures

One-way delay

Jitter

Packet loss

Packet Reorder

1000BaseX

100BaseT Switch

100BaseT Hub

10BaseT

WLAN (~4Mbps)

-----------------

Occupancy level

Packet loss

New Model for IPTV


Itu t g 1050 and tia 921 test profiles

ITU-T G.1050 and TIA-921 Test Profiles

ITU-T Recommendation Y.1541 uses a similar approach, but there is not a one-to-one mapping.


Itu t g 1050 and tia 921 test profiles based on itu t y1541

ITU-T G.1050 and TIA-921 Test Profiles based on ITU-T Y1541

Different test profiles for different Service Level Agreements (SLAs)

  • Profile A – Well-Managed Network Impairment Ranges

  • Y.1541 QoS Level – suitable for high quality video and VoIP

  • Most Service Providers will be supporting this SLA for IPTV


Itu t g 1050 and tia 921 test profiles based on itu t y15411

ITU-T G.1050 and TIA-921 Test Profiles based on ITU-T Y1541

Different test profiles for different Service Level Agreements (SLAs)

  • Profile B – Partially-Managed Network Impairment Ranges

  • Y.1541 QoS Level – suitable for Lower quality video and VoIP


Itu t g 1050 and tia 921 test profiles based on itu t y15412

ITU-T G.1050 and TIA-921 Test Profiles based on ITU-T Y1541

Different test profiles for different Service Level Agreements (SLAs)

  • Profile C – Un-Managed Network Impairment Ranges

  • Y.1541 QoS Level – Internet little or no guarantees


Itu t g 1050 and tia 921 8 impairment severity combinations

ITU-T G.1050 and TIA-921 8 Impairment Severity Combinations

Impairment Severity Combinations


Itu t g 1050 and tia 921 lan and access rates

ITU-T G.1050 and TIA-921 LAN and Access Rates

Home Rates

LAN Rates for Home Locations

Access Rates for Home Locations

Business Rates

LAN Rates for Business Locations

Access Rates for Business Locations

LAN and Access Rates (New Revision of Standard/Recommendation) will change as network conditions change

  • General – 133 LAN/Access Rate Combinations

  • IPTV Video – 3 LAN/Access Rate Combinations


Tia 921a pn 3 0062rv2 new lan and access rates for iptv

TIA-921A (PN-3-0062RV2)New LAN and Access Rates for IPTV

New LAN and Access Rate for IPTV

Access Rates for Home Locations applications > 3Mb/s

Access Rates for Large Business Locations

10 LAN/Access Rate Combinations

for IPTV


Impairment characteristics

Impairment Characteristics

Impairment Characteristics

Good

Bad

Route Flap

Link Failure

Severe

  • General Model – 1064 ICs, IPTV 24 ICs

  • New IPTV Model – 80 ICs


Itu t g 1050 and tia 921 example of network model coverage nmc curve

ITU-T G.1050 and TIA-921 Example of Network Model Coverage (NMC) Curve

Video Quality may also be plotted

OR


Example using g 1050 tia 921 to test video quality

Example: Using G.1050/TIA-921 to Test Video Quality

VLC

Video Monitor

Video Stream output

Received Video Stream

G.1050

TIA921

IP Network Impairment Emulator

Video Streaming Server (VSS)

Video Streaming Client (VSC)

MPEG2 and H.264 Video Streams

Video Quality Measurement System

131A to 133H Impairment Conditions

3 Minutes per Impairment Combination

Video Quality Measurements


G 1050 tia 921 ip impairments example video testing

G.1050/TIA-921 IP ImpairmentsExample Video Testing

131A

131B

131C

24 ICs

131A to 133H

131D

131E

131F

131G

131H


Example video quality v factor mpeg2 g 1050 tia 921 ip impairements

Example Video Quality (V-Factor) – MPEG2G.1050/TIA-921 IP Impairements

  • MPEG Video Quality in the presence of G.1050/TIA-921 IP Impairments

  • MPEG2 video has a higher quality than H.264 Video under the same G.1050/TIA-921 IP Impairments


Example video quality v factor h 264 g 1050 tia 921 ip impairements

Example: Video Quality (V-Factor) – H.264 G.1050/TIA-921 IP Impairements

  • H.264 Video Quality in the presence of G.1050/TIA-921 IP Impairments

  • H.264 video has a lower quality than MPEG2 Video under the same G.1050/TIA-921 IP Impairments


Example of how to use tia 921 g 1050 in etsi ts 186 008 x

G.1050

TIA921

IP Network Impairment Emulator

Example of How to Use TIA-921/G.1050 in ETSI TS 186-008-x

NGN IMS overview (from ES 282 007)


Liaison with tia tr30 3

Liaison with TIA-TR30.3

  • Project for IP impairment for IMS/NGN

    • Include access characteristics in current project

    • Open up new project specific to IMS/NGN

  • TIA TR30.3

    • TIA-921

  • ITU-T SG-12

    • G.1050


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