Channel Bonding

Channel Bonding

..the new guy in DVB-S2X

Hello!Fragiadakis Giorgos

gfragi@gmail.com

Assignment for “Satellite Communications”, Fall Semester 2014

Professors: Vassilis Dalakas Georgia Dede

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General scopeLet’s look back

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Instead of Definitions1

￭ Channel￭ is used to convey information￭ certain capacity (Hz or bits per second)

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￭ Throughput￭ performance of a system￭ completed tasks ￭ over specific period

“

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Shannon's capacity law indicates that the theoretical

capacity limit increases linearly with bandwidth. Therefore, the simplest

solution to increasing the rate of any given system is to

expand its operating bandwidth.

Instead of Definitions2

￭ Channel (or Ethernet) Bonding￭ is a logical procedure for utilizing multiple

connections (channels) for increased throughput

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Instead of Definitions4

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The

Prot

ocols

￭ Transport Stream (TS)

￭ audio, video & data communications transmission protocol

￭ multiplexing ￭ transmitting

￭ Generic Stream Encapsulation (GSE)￭ defined by DVB (ETSI)￭ alternative solution of

transmission￭ carry packet oriented

protocols (e.g. IP)￭ efficient encapsulation of

IP datagrams

S2X welcome’s Channel Bonding

The necessity and the implementation

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Viewers calling 9

CATV (digital cable TV)

￭ assigns one QAM (Quadrature Amplitude Modulation)

channel for an individual stream

￭ 64-QAM & 256-QAM the common method

￭ 38.47Mbps data rate carried by 256-QAM

Today’s facts

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200Mbpsthe data transfer rate for UHDTV

1024/4096-QAMis needed to be “multiplied” by 4 or 3, in order to transfer 8K UHDTV video

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The implementation

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One higher-speed data stream separated into multiple data packets sent through multiple independent channels, and combines data packets received on multiple independent channels into one higher-speed data stream.

Design of Out-of-Band Protocols to Transmit UHDTV, Sunsik Roh, 2012

Getting deeper

Principle of transmission over TS transmission

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Example of GSE channel bonding transmission

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Example of GSE channel bonding at the receiver

Conclusionthe good and the bad

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Good and Bad about CB

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Positives￭ helps clients/providers to

get/offer higher quality of service in house.

￭ maximize capacity of channel

￭ take the maximum advantage of spectrum

￭ increase the data transfer speed with existing copper wire

Negatives￭ restricts the available

channels￭ makes interferences

between channels more often

It’ easy to understand

￭ More & more Direct-to-Home (DTH) applications are being served over satellite

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￭ Direct to Home (DTH) applications increase profitability

￭ Channel Bonding is a cheap and simple method to be implemented

It’s better with company..

even if its in parallel

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Thanks!Any questions?

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Transport Stream

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TS vs GSE

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