publications: - title: "Moving data in DTNs with HTTP and MIME" author: - name: "Lloyd Wood" link: "http://lloydwood.users.sourceforge.net/" - name: "Peter Holliday" link: "https://researchr.org/alias/peter-holliday" - name: "Daniel Floreani" link: "https://researchr.org/alias/daniel-floreani" - name: "Ioannis Psaras" link: "https://researchr.org/alias/ioannis-psaras" year: "2009" doi: "http://dx.doi.org/10.1109/ICUMT.2009.5345656" abstract: "Multipurpose Internet Mail Extensions (MIME) provide a simple way to describe the type of data sent and its use. Email and the Web use MIME extensively to carry different files. The Hypertext Transfer protocol (HTTP) is universally recognized as a straightforward method to carry MIME objects as binary streams. Taking MIME and HTTP as a starting point, and adopting the well-understood need for different `convergence layers' to carry HTTP in different challenged environments where TCP may not be suitable, this paper outlines work in progress to run HTTP over different transports, and how this can be used to create a simple, yet powerful, approach to relaying content in delay- and disruption-tolerant networks (DTNs)." links: doi: "http://dx.doi.org/10.1109/ICUMT.2009.5345656" dblp: "http://dblp.uni-trier.de/rec/bibtex/conf/icumt/WoodHFP09" tags: - "data-flow" researchr: "https://researchr.org/publication/WoodHFP09" cites: 0 citedby: 0 pages: "1-4" booktitle: "Proceedings of the International Conference on Ultra Modern Telecommunications, ICUMT 2009, 12-14 October 2009, St. Petersburg, Russia" publisher: "IEEE" kind: "inproceedings" key: "WoodHFP09" - title: "A Fair Traffic Conditioner for the Assured Service in a Differentiated Services Internet" author: - name: "Ilias Andrikopoulos" link: "https://researchr.org/alias/ilias-andrikopoulos" - name: "Lloyd Wood" link: "http://lloydwood.users.sourceforge.net/" - name: "George Pavlou" link: "https://researchr.org/alias/george-pavlou" year: "2000" abstract: "A research issue under investigation in the context of differentiated services (DiffServ) is the fair distribution of bandwidth between aggregates sharing the same assured forwarding (AF) class. Multiplexing both responsive and unresponsive flows, e.g. TCP and UDP respectively, leads to unfair sharing of the available bandwidth in over-provisioned networks. To date, much effort has concentrated on experiments using different methods for mapping TCP and UDP flows of the same AF class to the three possible drop precedences of the AF specification. Although this approach may protect responsive from unresponsive flows, it has not been shown to provide adequate fairness. We present a traffic conditioner able to provide fairness between responsive and unresponsive flows originating from the same customer network, using a fair two-rate three-color marker. Its capability for fairness is based on the use of the FRED fair active buffer algorithm to control the token allocation of the token buckets residing in the traffic conditioner. We also show that by employing fair multiple RED (FMRED) at the DiffServ domain ingress node, the overall fairness of the customer network aggregates is improved when compared to the case where the vanilla MRED algorithm is used." researchr: "https://researchr.org/publication/AndrikopoulosWP00" cites: 0 citedby: 0 pages: "806-810" booktitle: "ICC (2)" kind: "inproceedings" key: "AndrikopoulosWP00" - title: "Experience with Delay-Tolerant Networking from orbit" author: - name: "William D. Ivancic" link: "https://researchr.org/alias/william-d.-ivancic" - name: "Wesley M. Eddy" link: "https://researchr.org/alias/wesley-m.-eddy" - name: "Dave Stewart" link: "https://researchr.org/alias/dave-stewart" - name: "Lloyd Wood" link: "http://lloydwood.users.sourceforge.net/" - name: "James Northam" link: "https://researchr.org/alias/james-northam" - name: "Chris Jackson" link: "https://researchr.org/alias/chris-jackson" year: "2010" doi: "http://dx.doi.org/10.1002/sat.966" abstract: "We describe the first use from space of the Bundle Protocol for Delay-Tolerant Networking (DTN) and lessons learned from experiments made and experience gained with this protocol. The Disaster Monitoring Constellation (DMC), constructed by Surrey Satellite Technology Ltd (SSTL), is a multiple-satellite Earth-imaging low-Earth-orbit sensor network in which recorded 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 disruption-tolerant network. 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 technically advanced 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 the 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. Our practical experience with the first successful use of the DTNRG Bundle Protocol in a space environment gives us insights into the design of the Bundle Protocol and enables us to identify issues that must be addressed before wider deployment of the Bundle Protocol. " links: doi: "http://dx.doi.org/10.1002/sat.966" dblp: "http://dblp.uni-trier.de/rec/bibtex/journals/ijscn/IvancicESWNJ10" researchr: "https://researchr.org/publication/IvancicESWNJ10" cites: 0 citedby: 0 journal: "Int. J. Satellite Communications Networking" volume: "28" number: "5-6" pages: "335-351" kind: "article" key: "IvancicESWNJ10" - title: "Using Internet nodes and routers onboard satellites" author: - name: "Lloyd Wood" link: "http://lloydwood.users.sourceforge.net/" - name: "William D. Ivancic" link: "https://researchr.org/alias/william-d.-ivancic" - name: "D. Hodgson" link: "https://researchr.org/alias/d.-hodgson" - name: "E. Miller" link: "https://researchr.org/alias/e.-miller" - name: "B. Conner" link: "https://researchr.org/alias/b.-conner" - name: "Scott Lynch" link: "https://researchr.org/alias/scott-lynch" - name: "Chris Jackson" link: "https://researchr.org/alias/chris-jackson" - name: "A. da Silva Curiel" link: "https://researchr.org/alias/a.-da-silva-curiel" - name: "D. Cooke" link: "https://researchr.org/alias/d.-cooke" - name: "Dan Shell" link: "https://researchr.org/alias/dan-shell" - name: "J. Walke" link: "https://researchr.org/alias/j.-walke" - name: "Dave Stewart" link: "https://researchr.org/alias/dave-stewart" year: "2007" doi: "http://dx.doi.org/10.1002/sat.870" abstract: "An Internet router was integrated into the UK-DMC remote-sensing satellite as a secondary experimental payload. This commercial product has been orbiting in space for over three years. We describe the integration of the router and satellite and the successful on-orbit testing of the router, which took place using the Virtual Mission Operations Center (VMOC) application as part of a larger systems internetworking exercise. Placing this Cisco router in Low Earth Orbit (CLEO) onboard a small satellite is one step towards extending the terrestrial networking model to the near-Earth space environment as part of a merged space–ground architecture." links: doi: "http://dx.doi.org/10.1002/sat.870" dblp: "http://dblp.uni-trier.de/rec/bibtex/journals/ijscn/WoodIHMCLJCCSWS07" tags: - "routing" researchr: "https://researchr.org/publication/WoodIHMCLJCCSWS07" cites: 0 citedby: 0 journal: "Int. J. Satellite Communications Networking" volume: "25" number: "2" pages: "195-216" kind: "article" key: "WoodIHMCLJCCSWS07" - title: "IP routing issues in satellite constellation networks" author: - name: "Lloyd Wood" link: "http://lloydwood.users.sourceforge.net/" - name: "Antoine Clerget" link: "https://researchr.org/alias/antoine-clerget" - name: "Ilias Andrikopoulos" link: "https://researchr.org/alias/ilias-andrikopoulos" - name: "George Pavlou" link: "https://researchr.org/alias/george-pavlou" - name: "Walid Dabbous" link: "https://researchr.org/alias/walid-dabbous" year: "2001" doi: "http://dx.doi.org/10.1002/sat.655" abstract: "The growth in use of Internet-based applications in recent years has led to telecommunication networks transporting an increasingly large amount of Internet Protocol (IP)-based traffic. Proposed broadband satellite constellation networks, currently under development, will be required to transport IP traffic. A case can be made for implementing IP routing directly within the constellation network, in order to transport IP traffic well and to provide good support for IP multicast and for emerging IP-based Quality of Service (QoS) guarantees. This paper examines strategies for implementing and operating IP routing effectively within satellite constellation networks, given known constraints on the constellation resulting from satellite mobility, global visibility, routing and addressing" links: doi: "http://dx.doi.org/10.1002/sat.655" dblp: "http://dblp.uni-trier.de/rec/bibtex/journals/ijscn/WoodCAPD01" researchr: "https://researchr.org/publication/WoodCAPD01" cites: 0 citedby: 0 journal: "Int. J. Satellite Communications Networking" volume: "19" number: "1" pages: "69-92" kind: "article" key: "WoodCAPD01" - title: "Large File Transfers from Space Using Multiple Ground Terminals and Delay-Tolerant Networking" author: - name: "William D. Ivancic" link: "https://researchr.org/alias/william-d.-ivancic" - name: "Phillip Paulsen" link: "https://researchr.org/alias/phillip-paulsen" - name: "Dave Stewart" link: "https://researchr.org/alias/dave-stewart" - name: "Wesley M. Eddy" link: "https://researchr.org/alias/wesley-m.-eddy" - name: "James McKim" link: "https://researchr.org/alias/james-mckim" - name: "John Taylor" link: "https://researchr.org/alias/john-taylor" - name: "Scott Lynch" link: "https://researchr.org/alias/scott-lynch" - name: "Jay Heberle" link: "https://researchr.org/alias/jay-heberle" - name: "James Northam" link: "https://researchr.org/alias/james-northam" - name: "Chris Jackson" link: "https://researchr.org/alias/chris-jackson" - name: "Lloyd Wood" link: "http://lloydwood.users.sourceforge.net/" year: "2010" doi: "http://dx.doi.org/10.1109/GLOCOM.2010.5683304" abstract: "We use Delay-Tolerant Networking (DTN) to break control loops between space-ground communication links and ground-ground communication links to increase overall file delivery efficiency, as well as to enable large files to be proactively fragmented and received across multiple ground stations. DTN proactive fragmentation and reactive fragmentation were demonstrated from the UK-DMC satellite using two independent ground stations. The files were reassembled at a bundle agent, located at Glenn Research Center in Cleveland Ohio. The first space-based demonstration of this occurred on September 30 and October 1, 2009. This paper details those experiments." links: doi: "http://dx.doi.org/10.1109/GLOCOM.2010.5683304" dblp: "http://dblp.uni-trier.de/rec/bibtex/conf/globecom/IvancicPSEMTLHNJW10" researchr: "https://researchr.org/publication/IvancicPSEMTLHNJW10" cites: 0 citedby: 0 pages: "1-6" booktitle: "Proceedings of the Global Communications Conference, 2010. GLOBECOM 2010, 6-10 December 2010, Miami, Florida, USA" publisher: "IEEE" isbn: "978-1-4244-5638-3" kind: "inproceedings" key: "IvancicPSEMTLHNJW10" - title: "Sharing the dream" author: - name: "Lloyd Wood" link: "http://lloydwood.users.sourceforge.net/" - name: "Peter Holliday" link: "https://researchr.org/alias/peter-holliday" - name: "Daniel Floreani" link: "https://researchr.org/alias/daniel-floreani" - name: "Wesley Eddy" link: "https://researchr.org/alias/wesley-eddy" year: "2009" doi: "http://dx.doi.org/10.1109/ICUMT.2009.5345655" abstract: "We reconsider desirability of the Bundle Protocol (BP) as a universal solution for Delay- and Disruption-Tolerant Networking (DTN). The BP is intended to provide a single solution that is applicable to a wide variety of differently- challenged DTN networks, even though those networks are unlikely to interact with one another. This paper asks whether such a single protocol can encompass all varied DTN networking needs. It asks whether attempting to repeat the previous success of the homogeneous Internet by layering over all networks is suitable for the heterogeneous DTN world, where diverse application needs and operational requirements lead to diverse, scenario-specific, applications. This position paper is intended to encourage discussion of the role, scope, and adoption of the BP." links: doi: "http://dx.doi.org/10.1109/ICUMT.2009.5345655" dblp: "http://dblp.uni-trier.de/rec/bibtex/conf/icumt/WoodHFE09" researchr: "https://researchr.org/publication/WoodHFE09" cites: 0 citedby: 0 pages: "1-2" booktitle: "Proceedings of the International Conference on Ultra Modern Telecommunications, ICUMT 2009, 12-14 October 2009, St. Petersburg, Russia" publisher: "IEEE" kind: "inproceedings" key: "WoodHFE09"