Testing MDP in a simulated space channel environment

Authors:
Stephen Horan;Anirban Chakraborti;Sandeep Muddasani;Srinivasulu Narina
Affiliations:
Klipsch School of Electrical and Computer Engineering, New Mexico State University, Box 30001, MSC 3-0, Las Cruces, NM;Klipsch School of Electrical and Computer Engineering, New Mexico State University, Box 30001, MSC 3-0, Las Cruces, NM;Klipsch School of Electrical and Computer Engineering, New Mexico State University, Box 30001, MSC 3-0, Las Cruces, NM;Klipsch School of Electrical and Computer Engineering, New Mexico State University, Box 30001, MSC 3-0, Las Cruces, NM
Venue:
Computer Networks: The International Journal of Computer and Telecommunications Networking - Special issue: Networking for the earth science
Year:
2004

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Abstract

The performance of the Multicast Dissemination Protocol (MDP) in a simulated satellite channel is investigated. The environment that is modeled is that to be expected in a small satellite communications environment including channel errors and link interruptions. The anticipated operating mode for these satellites is to transfer file-oriented sensor data to ground-based earth and space science investigators. The satellite link is simulated with a channel environment simulator. The performance of MDP is compared with file transfer protocol (ftp) acting as a standard basis. In these experiments, we find that MDP does not perform as well as ftp in the high-quality channel, although the performance difference is small. MDP does perform better than ftp in low-quality channels. MDP is also able to resume data transmissions when a link outage occurs. MDP is seen as being a viable option for use in small satellite communications systems.