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Licklider Transmission Protocol (LTP)-base DTN for cislunar communications in presence of long link disruption

Posted on:2011-01-31Degree:M.E.SType:Thesis
University:Lamar University - BeaumontCandidate:Gullapalli, VasdevFull Text:PDF
GTID:2448390002955218Subject:Engineering
Abstract/Summary:
The National Aeronautics and Space Administration (NASA) are consigned to the safe, sustained, affordable human and robotic exploration of the Moon, Mars, and beyond. The goal is to create sustainable human settlements on the Moon and Mars with the motivation to preserve the human race. So, NASA has been trying different protocols to advance cis-lunar communication such as Delay Tolerant Networking (DTN), and the latest one: Interplanetary Overlay Network (ION). ION is an implementation of DTN. ION was designed mainly to reduce the cost and risk in space communication. ION implements the TCPCL, LTPCL, and UDPCL to work with high channel Bit Error Rate (BER), long link breaks, and long link delays. In this thesis, we present a performance evaluation of Licklider Transmission Protocol (LTP)-based DTN for cis-lunar communications in presence of long link disruption. Based on experimental evaluation and statistical analysis, we conclude that good-put performance variation is very less for different bit error rates at the particular link break, and also LTP is capable for reliable communication even in the link break for 16 hours to the maximum. Finally, the protocol is the best for higher BER's and long link break.
Keywords/Search Tags:Long link, ION, DTN, Protocol, LTP, Communication
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