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Use of the delay-tolerant networking bundle protocol from space

Wood, L, Ivancic, W, Eddy, WM, Stewart, D, Northam, J, Jackson, C and Da Silva Curiel, A (2008) Use of the delay-tolerant networking bundle protocol from space In: International Astronautical Federation - 59th International Astronautical Congress 2008, IAC 2008, 2008-09-29 - 2008-10-03, Glasgow.

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The Disaster Monitoring Constellation (DMC), constructed by Surrey Satellite Technology Ltd (SSTL), is a multi-satellite Earth-imaging low-Earth-orbit sensor network where captured image swaths are stored onboard each satellite and later downloaded from the satellite payloads to a ground station. Store-and forward of images with capture and later download gives each satellite the characteristics of a node in a Delay/Disruption Tolerant Network (DTN). Originally developed for the ’Interplanetary Internet’, DTNs are now under investigation in an Internet Research Task Force (IRTF) DTN research group (RG), which has developed a ‘bundle’ architecture and protocol. The DMC is currently unique in its adoption of the Internet Protocol (IP) for its imaging payloads and for satellite command and control, based around reuse of commercial networking and link protocols. These satellites’ use of IP has enabled earlier experiments with the Cisco router in Low Earth Orbit (CLEO) onboard the constellation’s UK-DMC satellite. Earth images are downloaded from the satellites using a custom IP-based high-speed transfer protocol developed by SSTL, Saratoga, which tolerates unusual link environments. Saratoga has been documented in the Internet Engineering Task Force (IETF) for wider adoption. We experiment with use of DTNRG bundle concepts onboard the UK-DMC satellite, by examining how Saratoga can be used as a DTN ‘convergence layer’ to carry the DTNRG Bundle Protocol, so that sensor images can be delivered to ground stations and beyond as bundles. This is the first successful use of the DTNRG Bundle Protocol in a space environment. We use our practical experience to examine the strengths and weaknesses of the Bundle Protocol for DTN use, paying attention to fragmentation, custody transfer, and reliability issues.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions : Surrey research (other units)
Authors :
Ivancic, W
Eddy, WM
Stewart, D
Northam, J
Jackson, C
Da Silva Curiel, A
Date : 2008
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 11:14
Last Modified : 23 Jan 2020 16:38

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