TSN Support for Quality of Service in Space ERTS Conference - Jan. 2020 Presenter: Pierre-Julien CHAINE, PhD Student Supervisor from ONERA: Marc BOYER Supervisor from ONERA: Claire PAGETTI Supervisor from AIRBUS: Franck WARTEL
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion Introduction Introduction ➥ Internal project E4S - Ethernet for Space - from Airbus Defence and Space, ➥ A PhD program was started in Nov. 2018 within E4S project, ➥ PhD is hosted at ONERA, directed by Claire PAGETTI and Marc BOYER, ➥ PhD is supervised on technical aspects by Franck WARTEL , ➥ Goal: Find and assess potential new technologies based on Ethernet suited for space applications. 2/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion Outline Satellite Architecture Overview 1 Introduction Current Satellite Network Satellite Network Foreseen Evolution 2 Opportunity for an unified network Overview of TSN Which protocols for an On-Board Unified TSN Network? Satisfying FDIR requirements with 802.1CB-FRER 3 Conclusion 4 3/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion Outline Satellite Architecture Overview 1 Introduction Current Satellite Network Satellite Network Foreseen Evolution 2 Opportunity for an unified network Overview of TSN Which protocols for an On-Board Unified TSN Network? Satisfying FDIR requirements with 802.1CB-FRER 3 Conclusion 4 4/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion Satellite Architecture HRG Spot 5 Vegetation Payload Payload - High Performance Domain HRS It is the purpose of the satellite, what Case the clients pays for. Service Platform module Propulsion module https://earth.esa.int/web/eoportal/satellite-missions/s/spot-5 5/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion Satellite Architecture HRG Spot 5 Payload - High Performance Domain Vegetation It is the purpose of the satellite, what Payload the clients pays for. HRS Platform - Time Critical Domain Case It is what allows the payload to achieve its mission: Service Platform module Propulsion module https://earth.esa.int/web/eoportal/satellite-missions/s/spot-5 5/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion Scope of the presentation Scope The following presentation will only focus on the network part of the satellite architecture and especially the network safety properties e.g. FDIR properties for the spacecraft industry (Fault Detection, Isolation and Recovery). 6/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion Current Satellite Architecture Introduction Platform Payload 7/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion Current Satellite Architecture Introduction Platform Payload RIU IMU Actuators Star Tracker Sensors (N) Instrument A Platform: Payload: SW + MM A (N) Performances: Performances: Instrument B Instrument B Low latency, High average OBC N low jitter, throughput guarantee of Technologies: arrival Instrument C SpaceWire, Technologies: SpaceFibre, 1553, CAN, SerDes SpaceWire 7/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion Current Satellite Architecture Introduction Platform Payload RIU IMU Actuators Platform: Star Tracker Payload: Sensors (N) Instrument A Performances: Performances: Low latency, High average SW + MM A (N) low jitter, throughput Instrument B guarantee of Safety: OBC N arrival SW + MM B (N) OBC R Link and Safety: device cold Link and Instrument C redundancy device cold Technologies: redundancy SpaceWire, Actuators Technologies: SpaceFibre, Sensors (N) IMU Star Tracker 1553, CAN, SerDes RIU SpaceWire 7/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion Current Satellite Architecture Introduction Platform Payload RIU IMU Platform: Payload: Actuators Star Tracker Sensors (N) Performances: Instrument A Performances: Low latency, High average SW + MM A (N) low jitter, throughput guarantee of Instrument B Safety: arrival OBC N Link and SW + MM B (N) OBC R Safety: device cold Link and redundancy Instrument C device cold Technologies: redundancy SpaceWire, Technologies: Actuators SpaceFibre, Sensors (N) 1553, CAN, SerDes IMU Star Tracker RIU SpaceWire 7/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion Current Satellite Architecture Introduction Platform Payload RIU IMU Platform: Payload: Actuators Star Tracker Sensors (N) Performances: Instrument A Performances: Low latency, High average SW + MM A (N) low jitter, throughput guarantee of Instrument B Safety: arrival OBC N Link and SW + MM B (N) OBC R Safety: device cold Link and redundancy Instrument C device cold Technologies: redundancy SpaceWire, Technologies: Actuators SpaceFibre, Sensors (N) 1553, CAN, SerDes IMU Star Tracker RIU SpaceWire 7/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion Outline Satellite Architecture Overview 1 Introduction Current Satellite Network Satellite Network Foreseen Evolution 2 Opportunity for an unified network Overview of TSN Which protocols for an On-Board Unified TSN Network? Satisfying FDIR requirements with 802.1CB-FRER 3 Conclusion 4 8/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion Actual Network Pros & Cons Well suited for space environment Evolution opportunities and performances limited Very reliable, simple behavior, easy Few users of these technologies to analyse Spacewire + 1 553 Few manufacturers Mature for space applications Expensive Synchronous protocols developed over 1553 are perfect for AOCS control loops Two very different technologies 9/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion Where to go ? Problem Statement Is it possible to find a unique technology, that: ➥ is able to fulfil both platform and payload needs, ➥ has better performances, ➥ is easy to analyse/configure, ➥ eases development and integration, ➥ is cheaper 10/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion Unified Ethernet network Pros & Cons Very large ecosystem Complex behavior, non deterministic in general Very mature in industrial applications Unified High data rate (>1Gbit/s) Not qualified for space environment network yet using Lot of manufacturers, COTS available Ethernet/ Risk of re-designing « legacy » TSN Only one technology devices Lower costs (TBC) Easier integration 11/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion TSN ? Challenge Is TSN a superset of 1553 + SpaceWire i.e. is it possible to satisfy both platform and payload requirements using the same technology in a Unified Ethernet/TSN Network ? Organization In order to answer that question, two aspects have to be analysed: 12/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
Satellite Architecture Overview Satellite Network Foreseen Evolution Satisfying FDIR requirements with 802.1CB-FRER Conclusion TSN ? Challenge Is TSN a superset of 1553 + SpaceWire i.e. is it possible to satisfy both platform and payload requirements using the same technology in a Unified Ethernet/TSN Network ? Organization In order to answer that question, two aspects have to be analysed: Which protocols/features should be used ? Which protocols should be avoided ? 1 12/24 Pierre-Julien CHAINE - January 30, 2020 - ERTS Conference
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