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IPTV a Triple Play meranie13.3.2009

Sítě FTTx v roce 2009

... umenie optickej komunikácie

Ing.Peter Potrok, Ing. Mirek Hladký

Next-Gen Converged Network —It’s all about growing bandwidth appetite—

Video Bandwidth Contribution

VoD

VoIP & MM

Wireless

BC

HSD

Source: Various sources – IPTV ILEC/PTT 2009

VoD will dictate network cost equation

Tier 1 office720 Gbps 2009

74% VoD

Bandwidth

• >135 million digital video subscribers by 2009, ~42% CAGR*

• Ever increasing bandwidth; VOD, IPTV, HDTV, Internet video

• MSO led, LEC/PTT, Content Providers emerging

• New revenue streams; targeted advertising, personalized content

Residential Mobile Broadband• Increased bandwidth driven by new mobile

multimedia and video applications

• Enabled by advanced 3G (EVDO, HSDPA) and 4G (WiMAX ,LTE) wireless

• 200-400% incremental backhaul bandwidth for 3G…much more for 4G

• Carrier Ethernet backhaul market alone growing ~56% CAGR (06-09)*

Source: Heavy Reading

Services like IPTV, DVB-H, P2P, VoD, OTT Video to Drive Bandwidth

Traffic Growth

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IPTV Activity Worldwide

0

2,000,000

4,000,000

6,000,000

8,000,000

10,000,000

12,000,000

14,000,000

16,000,000

Europe Asia-

Pacific

North

America

South and

East Asia

Latin

America

Middle

East and

Africa

TOTAL

Q1 2007

Q1 2008

Evolution to Mass-Market IPTV

IPTV Subscribers – Current Status

IPTV Subscribers – Trend

20132007

>90 M

>13 M52% CAGR

ABI research 2008

Point Topic 2008

End of 2007 IPTV Subscribers

Orange-FT >1.3M

Iliad-Free >2.4M

Neuf >0.75M

TeliaSonera >0.35M

Telefonica >0.50M

Fastweb >0.20M

Belgacom >0.30M

DT >0.20M

BT >0.20M

PCCW >0.88M

Chungwa Telecom >0.40M

China Telecom >0.80M

Verizon >1.4M

ATT >0.23M

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Global IPTV Service Revenue

$7.2B

$31.6B

CAGR 34.5%

End-to-End IPTV/VoD Delivery - Network View

Channel Change Delays;

Synchronization;Stream Loss;

EPG ResponseTime;

Pixelation;

Unstable DSL Cross talk,

Line Re-sync;Impulse Noise

Link Saturation;Packet Loss

Packet Loss;Jitter;Delay

Channel absence;Stream Quality;

Middleware bugs;VoD Server crash;Encoding quality

Typical ServiceQuality

Impairments

Video Content Acquisition

National VideoHead-End

Routing Network Infrastructure

Aggregation Network Infrastructure

Access Network Infrastructure

Multimedia Home Network

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• Customer Premise ~50% ~30 to 40%• Impulse events• Residential gateway problems• Security• Performance

• Aggregation & Last Mile ~25% ~20 to 25%• Miss provisioning• IGMP performance• Policy management

• Network Transition & VoIP/ISP Peering ~10% ~10%• Signaling• VOD service capacity / availability• Local channel feed errors

• Transport Layer ~10% ~20 to 25%• Packet loss• Error correction performance• Miss-provisioning

• Video Head End ~5 to 10% ~10 to 15%• Poor content quality• PCR jitter• PID mappings errors• Lip synch problems

Where do IPTV Problems Come From?

2007 2010% of problems

Limited Performance Tolerance

Type Latency Jitter Duration PL Tolerance PLR (1 hr)

SD MPEG-2 < 200 ms < 50 ms < 16 ms 7 packets 1 error event/hour 5.46 x 10 -6

SD MPEG-4 < 200 ms < 50 ms < 16 ms 5 packets 1 error event/hour 7.31 x 10 -6

HD MPEG-2 < 200 ms < 50 ms < 16 ms 24

packets

1 error event/ 4 hours 1.17 x 10 -6

HD MPEG-4 < 200 ms < 50 ms < 16 ms 14

packets

1 error event/ 4 hours 1.28 x 10 -6

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.

Testing IPTV and Why ?Every network element in a network will contribute to some extent to packet loss, packet jitter and latency

Testing the network before you roll out an IPTV will help isolate problems in the network that will affect picture quality

Monitoring IPTV once the service is rolled out will ensure viewing quality is maintained

Jitter Effect Packet Loss Effect Out-of-order Effect

.

Testing IPTV and Why ?

IPTV is unlike any other service on the network

IPTV requires the most bandwidth

IPTV is very sensitive to packet loss

Typically, IPTV uses UDP/IP encapsulation which does not allow for packet re-transmission

IPTV is sensitive to latency and packet jitter

Traffic Type

Transport Bandwidth Reqmts

Latency Reqmts

Jitter Reqmts

Packet Loss

Packet Sizes

Priority

Data TCP Bursty Resilient Resilient Resilient Variable Low

Voice UDP Low Low Lowest Medium Small High

Video UDP Highest Low Low Lowest Large High

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Packet lossPacket loss

Packet Loss and Picture Quality

Effect of Slow Channel Leave Time

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Typical Factors that Affect -Video Quality

Encoding and compression

Jitter

Latency

Bandwidth

Packet loss

Customer premises issues

FTB-8510B AXS-6xx

EXFO is focusing its IPTV testing strategy in both thetransport and access layer of the IPTV service delivery chain

Media Delivery Index (RFC4445)– MDI (RFC 4445)

• Provides users with a tool to measure and diagnose network induced impairments for IPTV streaming media

• It is comprised of two distinct measurements:

– Delay Factor (DF) and Media Loss Rate (MLR)

• Measurements serving as indicators of problems in the network that can be proactively addressed before it becomes a service affecting issue

• One of the key benefits - does not perform any type of stream decoding to achieve its metrics and therefore it does not require significant real-time processing power.

• MDI uses packet level metrics so it can be used to validate network equipment such as switches and routers

– These network elements play a key role in determining whether a packet is delayed or dropped

MDI Advantages

Only video standard (RFC4445) Scalable Relates directly to network video impairments Direct correlation to QoE Works with encrypted payloads

Supports MPEG-4, Windows Media 9 / VC-1 Not CODEC dependant Can be used with variable bit rate streams Provides real-time video quality metrics Can be used to estimate network buffers

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IPTV Functional Overview AXS-6xx•Stream Information

• IP Address

• UDP Port Number

• Supported Encapsulation – UDP, RTP/UDP, TCP/RTSP

• Stream type– Multicast, Unicast, VOD (RTSP)

•Stream Metrics• Stream rate (kbps)

• Bandwidth Utilization (%)

• Media Delivery Index (MDI)– Delay Factor (DF) (ms)– Media Loss Rate (MLR) (p/s)

• Virtual Buffer Size (Bytes)– Min, Max

• PCR Jitter– Current

IGMP Metrics

• Per Stream

• Join Requests, Successful, Failed,

• Leave request counts

• Specific Query counts

• Zap time (ms)

IPTV User Interface

–Stream Information

• IP address

• Port #

• Type

• Stream Rate

• Bandwidth Utilization

–Multilayer Error Histogram

• Where the problem is in addition to what the problem is

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Data tests are used to test connectivity past the ATM layer. To ensure the customer has “sync and surf”, we need to confirm the “surf”!

Vital statistics:

•IP Packet statistics

•Downstream and Upstream rates

•LAN/WAN status

•Ping and TraceRoute

Data Tests

Key VoIP Performance Indicators

ADSL, ATM, IP Layer

Analysis

Up/downstream rates,

SNRm, Attn, IP Packet loss

Gateway/ATA Traffic ATA MAC, IP address,

DHCP handshaking

VoIP Call Flow Incoming/outgoing call

handshaking details for

each protocol

Jitter Analysis Plots max jitter for voice

conversation

Delay Plots inter-packet delay

distribution

VoIP Tests

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Monitor call flow of SIP based VoIP calls

VoIP Tests

Overview Page – FTB-8510B– Single view of all important

IPTV metrics– Join Status

– Stream Name

– Destination IP Address

– Port

– Delay Factor (ms)

– Medial Loss Rate (pps)

– TR 101 290 priority 1 metrics

– IP Rate Mbps)

– Bandwidth (%)

– Automatic sorting by stream status

– Current alarm (red)

– Alarm history (yellow)

– No alarm (green)

– Not present (grey)

– The cell corresponding to the alarmed metric is highlighted in red for easy identification

All important IPTV metrics in one single view

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MDI/TR 101 290 Page– MDI DF and MLR metrics

– TR 101 290 priority 1 metrics

– Threshold configuration – MDI DF and MLR

– PCR Jitter

– PAT Error 2

– PMT Error 2

– PID Error

– Thresholds apply to all monitored stream

– Thresholds are applied immediately but will only take effect when a new event is recorded for this metric

– When a threshold is crossed an alarm is reported (current/history and alarm seconds)

– The alarm is maintained active until the monitored parameter goes below the provisioned threshold value

– In the logger, threshold crossing event reports the condition crossed plus the threshold value exceeded

– Thresholds can be enabled/disabled on a threshold type basis

Threshold configuration

TR 101 290 priority 1 metrics

IGMP Page

– Provides IGMP join/leave capability per stream and statistics

– Join Requests, Successful, Failed,

– Leave request counts

– Specific Query counts

– Provides IGMP join/leave statistics for the entire multicast group including:

– Group count

– Join, Failed, Joining and Idle counts

– Join request, leave request and general query counts

– Join time out threshold– Default is 5 seconds

IGMP statistics per stream

IGMP statistics for entire multicast group

Note: IGMP functions require the test set to be connected to a standard active port on a switch

- No SPAN or TAP connections possible

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Stream Info Page– The Stream Info page provides

detailed information and statistics about the selected stream

– Identification– Stream Name

– Encapsulation

– Transport Stream Type

– Video stream Type

– Test timers

– Source / Destination info– IP address

– Port

– Ethernet– Bandwidth Utilization

– IP metrics– IP Rate

– Packet Size

– Packet Count

– Media – Media Rate

– Media Packet Count

– Media Packet Loss Count

Ďakujeme za pozornosť

Ing. Peter Potrok, Ing. Miroslav Hladkýpeter.potrok@profiber.sk, miroslav.hladky@profiber.sk