DocumentCode :
1785575
Title :
SpaceFibre: Adaptive high-speed data-link for future spacecraft onboard data handling
Author :
Parkes, Steve ; McClements, Chris ; McLaren, David ; Martinez, Ana Milena ; Florit, Albert Ferrer ; Gonzalez Villafranca, Alberto
Author_Institution :
Space Technol. Centre, Univ. of Dundee, Dundee, UK
fYear :
2014
fDate :
14-17 July 2014
Firstpage :
164
Lastpage :
171
Abstract :
SpaceFibre is a high-speed data-link technology being developed by the University of Dundee for ESA to support spacecraft onboard data-handling applications. SpaceFibre operates at 2.5 Gbits/s, can run over fibre optic or electrical media, provides galvanic isolation, includes Quality of Service (QoS) and Fault Detection Isolation and Recovery (FDIR) support, and provides low-latency signalling. It operates over distances of 5m with copper cable and 100 m or more with fibre optic cable. SpaceFibre supports multiple virtual channels running over a single physical link. QoS capabilities built into the SpaceFibre hardware allow the bandwidth and priority of each virtual channel to be specified. Traffic flow over each virtual channel then adapts automatically taking into account virtual channels that have data ready to send and available buffer space at the far end of the link, along with link bandwidth and priority allocation. The novel QoS mechanism is simple but powerful and also allows the automatic detection of “babbling idiots” and virtual channels that are sending much less data than expected. After a brief introduction the SpaceFibre QoS and FDIR capabilities are explained. The approach taken in validating the SpaceFibre protocols and current status of the SpaceFibre development activities are then described.
Keywords :
aerospace computing; data handling; fault diagnosis; optical cables; protocols; quality of service; space communication links; telecommunication channels; telecommunication traffic; FDIR capabilities; FDIR support; QoS capabilities; SpaceFibre QoS mechanism; SpaceFibre hardware; SpaceFibre protocols; SpaceWire fibre optic cable; USA; University of Dundee; adaptive high-speed data-link technology; automatic babbling idiot detection; copper cable; electrical media; fault detection isolation and recovery; galvanic isolation; low-latency signalling; physical link; quality of service; spacecraft onboard data-handling applications; traffic flow; virtual channels; Bandwidth; Educational institutions; IP networks; Instruments; Protocols; Quality of service; Standards; SpaceFibre; SpaceWire; networks; spacecraft onboard data-handling;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Adaptive Hardware and Systems (AHS), 2014 NASA/ESA Conference on
Conference_Location :
Leicester
Type :
conf
DOI :
10.1109/AHS.2014.6880173
Filename :
6880173
Link To Document :
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