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Channel Bonding
..the new guy in DVB-S2X
Hello!Fragiadakis Giorgos
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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