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Ka-Band for NewsACM Controlled Adaptive Video

WBU-ISOG Forum, May 31st, 2012Slava Frayter

slava.frayter@newtec.eu

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Ka Band facts

Almost 40 satellites with Ka band capacity Estimated over 200 Ka Band transponders WW footprint Excess capacity – frequency re-use across spotbeams Lease cost for Ka Band is lower than C/Ku

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So ? Satellite operators understand that video is the best

means to fill the pipe Broadcasters and SNG operators have access to cost-

effective bandwidth

But … Quality of Service remains a big concern for live video

contribution such as Satellite News Gathering (SNG)

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What is impacting QoS on Ka Band ?

Rain fades are the biggest source of QoS reduction on Ka Band

• (dB) High Fade Depth, mostly related to rain fades – Much higher impact compared to Ku Band (and C Band)

• (dB/Sec) High Fade Rate of signal fluctuation– Typically 0,1 to 1 dB/Sec ( up to 2.5 dB/sec)

• (GHz) Frequency dependency– Impact on 20GHz is 3 times bigger compared to 11GHz

Different technologies can help reduce the impact of rain fades

• Uplink Power Control (UPC)• ACM Controlled Adaptive Video

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Ka-Band: Rain affecting the Minimum SLA

Fade depth of typical rain-fade eventKu = 1dBKa = 4dB (below CIR?)

Min bandwidth in thunderstormC : little impactKu: stayed workingKa: 2 or 3 outages experienced during overnight tests

Ka: Faster fading (high dB/sec)`

CIR, SLAmin: Live CBR contribution

Rain Fade

1dB: Ku fade event

4dB: Ka fade event

X dB/sec

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ACM Controlled Adaptive Video

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SNG MPEG Encoder

Satellite Modulator

MPEG Decoder

Satellite Demodulator

CompressedVideo TS (ASI/IP)

Baseband Video(SDI)

CompressedVideo TS (ASI / IP)

Baseband Video(SDI)

Post production Ingest & storage

Most of the time

ModCod: 16APSK 5/6

Es/No : 12 dB

Throughput 5MB: HD 16,1 Mb/s

Bad weather

ModCod: QPSK 4/5

Es/No : 5.1 dB

Video Bitrate : HD 7.7 Mbps-7dB

ACM Control(Closed, Open, Managed)

© Newtec Cy nv – All Rights Reserved. Newtec confidential and proprietary information

ACM Controlled Adaptive VideoWhen something is better than nothing

Store and Forward– Preserve high quality video (time-shift)– Local recording of HQ video– Workflow for file transmission of high quality video

clip for n+1 news break

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© Newtec Cy nv – All Rights Reserved. Newtec confidential and proprietary information

ACM Controlled Adaptive Video TechnologyBuilding blocks are available

• ACM control loop and ACM satellite demodulator requirements– Accurate link margin measurement– Active margin prediction (fade speed) & management– Adaptive to rain fade depth (different frequencies)– Works with DVB-S2 and VSAT

• Video encoder and decoder need to support variable rate MPEG TS– E.g. using SMPTE 2022-4 variable bitrate MPEG TS on IP

• Store and Forward– High quality file store on modulator and/or MPEG encoder

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© Newtec Cy nv – All Rights Reserved. Newtec confidential and proprietary information

Conclusions

• Video is the best manner to fill Ka band capacity at a lower operational cost

• ACM Controlled Adaptive Video technology for live news gathering is mature enough to start building a solution set

• The big question is : Are satellite operators, SNG operators and broadcasters willing to agree on new type of SLA?

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Unrestricted

Company confidential

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