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Transmission Scheduling and Routing Algorithms for Delay Tolerant NetworksThe challenges of data processing, transmission scheduling and routing within a space network present a multi-criteria optimization problem. Long delays, intermittent connectivity, asymmetric data rates and potentially high error rates make traditional networking approaches unsuitable. The delay tolerant networking architecture and protocols attempt to mitigate many of these issues, yet transmission scheduling is largely manually configured and routes are determined by a static contact routing graph. A high level of variability exists among the requirements and environmental characteristics of different missions, some of which may allow for the use of more opportunistic routing methods. In all cases, resource allocation and constraints must be balanced with the optimization of data throughput and quality of service. Much work has been done researching routing techniques for terrestrial-based challenged networks in an attempt to optimize contact opportunities and resource usage. This paper examines several popular methods to determine their potential applicability to space networks.
Document ID
20170001406
Document Type
Conference Paper
Authors
Dudukovich, Rachel (NASA Glenn Research Center Cleveland, OH United States)
Raible, Daniel E. (NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
February 8, 2017
Publication Date
October 18, 2016
Subject Category
Space Communications, Spacecraft Communications, Command and Tracking
Report/Patent Number
GRC-E-DAA-TN35336
GRC-E-DAA-TN35265
Meeting Information
AIAA International Communications Satellite Systems Conference(Cleveland, OH)
Funding Number(s)
WBS: WBS 405034.04.01.08.01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
Space Networking
Delay Tolerant Networking
Networking

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