Experience with Delay-Tolerant Networking from Orbit

Ivancic, William D.; Wood, Lloyd; Holliday, Peter; Eddy, Wesley M.; Stewart, David; Jackson, Chris; Northam, James

doi:10.1109/asms.2008.37

Cited by 42 publications

(20 citation statements)

References 10 publications

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“…Furthermore, some of the latter approaches were successfully validated both on LEO [36] and Deep Space missions [37] driven by the UK Space Agency and NASA, respectively. Also, DTN has been in pilot studies in the International Space Station (ISS) since 2009 [38] and has been operational on ISS since May of 2016.…”

Section: Introductionmentioning

confidence: 99%

Assessing Contact Graph Routing Performance and Reliability in Distributed Satellite Constellations

Fraire

Madoery

Burleigh

et al. 2017

Journal of Computer Networks and Communications

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Existing Internet protocols assume persistent end-to-end connectivity, which cannot be guaranteed in disruptive and high-latency space environments. To operate over these challenging networks, a store-carry-and-forward communication architecture called Delay/Disruption Tolerant Networking (DTN) has been proposed. This work provides the first examination of the performance and robustness of Contact Graph Routing (CGR) algorithm, the state-of-the-art routing scheme for space-based DTNs. To this end, after a thorough description of CGR, two appealing satellite constellations are proposed and evaluated by means of simulations. Indeed, the DtnSim simulator is introduced as another relevant contribution of this work. Results enabled the authors to identify existing CGR weaknesses and enhancement opportunities.

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Section: Introductionmentioning

confidence: 99%

Assessing Contact Graph Routing Performance and Reliability in Distributed Satellite Constellations

Fraire

Madoery

Burleigh

et al. 2017

Journal of Computer Networks and Communications

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“…As discussed in [30], the bundle protocol uses bundle as a protocol data unit which may be of various lengths. Ivancic et al have used bundle sizes of 160 MB to transfer images from orbit to a ground station [31]. On the other hand in [32], Scott Burleigh suggests use of small bundles, less than 64KB long, to enable partial data delivery at application-appropriate granularity.…”

Section: Different Message Sizesmentioning

confidence: 99%

A Message Transfer Framework for Enhanced Reliability in Delay-Tolerant Networks

Yasmeen¹,

Nguyen²,

Huda³

et al. 2015

NPA

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Delay-tolerant networks (DTNs) can tolerate disruption on end-to-end paths by taking advantage of temporal links emerging between nodes as nodes move in the network. Intermediate nodes store messages before forwarding opportunities become available. A series of encounters (i.e., coming within mutual transmission range) among different nodes will eventually deliver the message to the desired destination. The message delivery performance in a DTN (such as delivery ratio and end-to-end delay) highly depends on the time elapsed between encounters 52 www.macrothink.org/npa Network Protocols and Algorithms ISSN 1943-3581 2015 and the time two nodes remain in each others communication range once a contact is established. As messages are forwarded opportunistically among nodes, it is important to have sufficient contact opportunities in the network for faster, more reliable delivery of messages. We propose a simple yet efficient method for improving the performance of a DTN by increasing the contact duration of encountered nodes (i.e., mobile devices). Our proposed sticky transfer framework and protocol enable nodes in DTNs to collect neighbors' information, evaluate their movement patterns and amounts of data to transfer in order to make decisions of whether to "stick" with a neighbor to complete the necessary data transfers. The sticky transfer framework can be combined with any DTN routing protocol to improve its performance. We evaluate our framework through simulations and measure several network performance metrics. Simulation results show that the proposed framework can improve the message delivery ratio, end-to-end delay, overhead ratio, buffer occupancy, number of disrupted message transmissions and so on. It can be well adopted for challenged scenarios where larger messages sizes need to be delivered with application deadline constraints. Furthermore, performance of the DTN improved (upto 43%) at higher node densities and (up to 49%) under increased mobility conditions.

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“…There has been ongoing development and flight experience in deep space, such as EPOXI 16 and the Deep Impact Network Experiments 17 . The Disaster Monitoring Constellation satellite sensor network utilized the bundle protocol to download images from orbit 18 . These protocols provide a standard that can be implemented across transmission mediums to effectively transfer data.…”

Section: B Communication Techniques and Current Researchmentioning

confidence: 99%

Conceptual Design of a Communication-based Deep Space Navigation Network

Anzalone

Chuang

2012

AIAA SPACE 2012 Conference &Amp; Exposition

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As the need grows for increased autonomy and position knowledge accuracy to support missions beyond Earth orbit, engineers must push and develop more advanced navigation sensors and systems that operate independent of Earth-based analysis and processing. Several spacecraft are approaching this problem using inter-spacecraft radiometric tracking and onboard autonomous optical navigation methods. This paper proposes an alternative implementation to aid in spacecraft position fixing. The proposed method Network-Based Navigation technique takes advantage of the communication data being sent between spacecraft and between spacecraft and ground control to embed navigation information. The navigation system uses these packets to provide navigation estimates to an onboard navigation filter to augment traditional ground-based radiometric tracking techniques. As opposed to using digital signal measurements to capture inherent information of the transmitted signal itself, this method relies on the embedded navigation packet headers to calculate a navigation estimate. This method is heavily dependent on clock accuracy and the initial results show the promising performance of a notional system. Nomenclature

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Experience with Delay-Tolerant Networking from Orbit

Cited by 42 publications

References 10 publications

Assessing Contact Graph Routing Performance and Reliability in Distributed Satellite Constellations

Assessing Contact Graph Routing Performance and Reliability in Distributed Satellite Constellations

A Message Transfer Framework for Enhanced Reliability in Delay-Tolerant Networks

Conceptual Design of a Communication-based Deep Space Navigation Network

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