On the performance of erasure coding over space DTNs

Authors:
Giorgos Papastergiou;Nikolaos Bezirgiannidis;Vassilis Tsaoussidis
Affiliations:
Space Internetworking Center, Department of Electrical and Computer Engineering, Democritus University of Thrace, Xanthi, Greece;Space Internetworking Center, Department of Electrical and Computer Engineering, Democritus University of Thrace, Xanthi, Greece;Space Internetworking Center, Department of Electrical and Computer Engineering, Democritus University of Thrace, Xanthi, Greece
Venue:
WWIC'12 Proceedings of the 10th international conference on Wired/Wireless Internet Communication
Year:
2012

Citing 3
Cited 1

Effective erasure codes for reliable computer communication protocols

ACM SIGCOMM Computer Communication Review
Performance analysis of CCSDS File Delivery Protocol and erasure coding techniques in deep space environments

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Deep-Space Transport Protocol: A novel transport scheme for Space DTNs

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Towards flexibility and accuracy in space DTN communications

Proceedings of the 8th ACM MobiCom workshop on Challenged networks

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Abstract

Erasure coding has attracted the attention of space research community due to its potential to present an alternative or complementary solution to ARQ schemes. Typically, erasure coding can enhance reliability and decrease delivery latency when long delays render ARQ-based solutions inefficient. In this paper, we explore the benefits of erasure coding for file transfers over space Delay Tolerant Networks, using a generic end-to-end mechanism built on top of the Bundle Protocol that incorporates LDPC codes along with an ARQ scheme. The results reveal significant insights on the tradeoff among efficient bandwidth exploitation and delivery latency. We quantify the performance gains when optimal erasure coding is applied and investigate in what extent theoretically optimal performance is affected when suboptimal code rates are used. Beyond that, we highlight the ability of erasure coding to provide different QoS to applications, in terms of file delivery latency, by properly tuning the code rate.