Satellite Communication -...
Transcript of Satellite Communication -...
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Satellite Communication - next steps towards an all-IP world -
by Jörg Rockstroh WORK Microwave GmbH December 12-13, 2017
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Status Change
Service
User
Inner
Outer
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Satcom Status
• Satcom is a traditional industry • consumer-based services challenging to renew
• majority of DTH still DVB-S
• consumer VSATs still DVB-S, or at least DVB-S2 CCM
• transport stream is the major transport layer
• HTS oversupply of Ka bandwidth • lack of business models to fill the carriers
• satellite operators move down the value chain
• disruptive developments still experimental (LEO) or limited (MEO)
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Satcom Status (cont'd)
• Hardware loses its viability as business model • general development in most electronics
• consolidation phase in manufacturing market
• movement towards service and/or software
• Service types are changing • FSS dropped in favour of VSAT in the first place
• with HTS some FSS comeback due to quality of service
• linear TV disappearing in the long run?
• satellite in the light of 5G?
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Need for Change
• Users • expect highspeed connectivity
• stop caring about tech, focus on design and UX instead
• often are not aware about the involvement of satellite
• Service types • linear TV declines in favour of interactive services
• broadcast and broadband will merge
• video and media always majority of traffic
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Need for Change (cont'd)
• Inner technology developments • digital revolution in electronics
• highspeed connectivity
• processing power
• Outer technology developments • learn from MEO constellation
• LEO constellations ... dreams vs. reality
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Services
• often work in the background • contribution and distribution of TV
• backhaul for mobile and internet
• connectivity for remote locations and maritime
• are affected by development of ground infrastructure • mobile connectivity
• fiber
• 5G
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Services (cont'd)
• will have to use the strength of satellite • immediate availability independent of location
• reach a large number of people
• not affected by ground based access restrictions (borders, ...)
• interconnect with other infrastructures • use of common protocols ... IP!
• add value, i.e. the broadcast of common content
• backup ground infrastructures
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Inner Technology
• development of digital technology drives communication electronics
• hardware structure becomes increasingly integrated and generic in design, with the 4 stages:
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IF Frontend ADC/DAC
FPGA or ASIC Signal Proc.
CPU Data Proc.
RF Conversion HPA
LNB/LNA
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Inner Technology (cont'd)
• RF frontend becomes increasingly integrated
• IF stage becomes digital
• FPGA technologies and processor / software platforms develop independently from actual function
• higher performance and ressources for wider feature sets come as a side effect
• applicable to both ground segment and space segment elements
• result: software defined radio
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Inner Technology (cont'd)
• ongoing evolution only slowed down by requirements that can not be met with generic highspeed busses and platforms
• Transport Stream ... • specified in the pre-Internet era
• over ASI with real-time hardware requirements, which are not in line with SDR evolution
• It is possible to use IP within Transport Stream, and Transport Stream within IP ...
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Inner Technology (cont'd)
• over satellite with DVB-S2(X) IP can be transported natively
• still lots of connections use TS
• advice: TS for video, but use IP for generic transport
• IP easily blends in into other ecosystems
• make use of IP-based mechanisms that optimize video transport ... MPEG-DASH, DVB-DASH
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Inner Technology (cont'd)
• further thoughts on infrastructure changes • digital IF allows for flexibility of processing location
• cloud-based - or virtual - entities can manage more tasks towards transmission than before
• blurring of traditional frontiers between entities
• the satellite modem becomes more of a software service than a single device!
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Outer Technology
• non-GEO constellations in general • tracking antennas or phased arrays required
• satellite handover
• lower latency
• higher throughput with regards to power
• required routing flexibility only manageable with IP
• MEO flying, but services far from initial promise • mainly maritime services
• IFE fast growing market
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Outer Technology (cont'd)
• LEO constellations • a lot of announcements with huge amounts of satellites
• OneWeb (648...720) LeoSat (108) Telesat (75) SpaceX (4425) Samsung (4600) Boeing (2960) Kepler Comms (140) Theia (112) Spire Global (110)
• a couple of smaller ventures for specific purposes
• who will survive?
• Frequency spectrum and interference?
• Debris? Kessler syndrome ...
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Conclusion
• With merger of communication infrastructures, satellite rather contributes in the background than playing a standalone role
• That merger is going to be IP based
• As technologies become more accessible in a generic way (SDR), the frontiers between entities will disappear
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