JPL Technical Report Server

The impact of traffic prioritization on Deep Space Network Mission traffic.

Show simple item record Jennings, Esther Segui, John Gao, Jay Clare, Loren Abraham, Douglas 2011-11-01T18:24:05Z 2011-11-01T18:24:05Z 2011-03-09
dc.identifier.citation 2011 IEEE Aerospace Conference, Big Sky, Montana, March 9, 2011. en_US
dc.identifier.clearanceno 11-0330
dc.description.abstract A select number of missions supported by NASA’s Deep Space Network (DSN) are demanding very high data rates. For example, the Kepler Mission was launched March 7, 2009 and at that time required the highest data rate of any NASA mission, with maximum rates of 4.33 Mb/s being provided via Ka band downlinks. The James Webb Space Telescope will require a maximum 28 Mb/s science downlink data rate also using Ka band links; as of this writing the launch is scheduled for a June 2014 launch. The Lunar Reconnaissance Orbiter, launched June 18, 2009, has demonstrated data rates at 100 Mb/s at lunar-Earth distances using NASA’s Near Earth Network (NEN) and K-band. As further advances are made in high data rate space telecommunications, particularly with emerging optical systems, it is expected that large surges in demand on the supporting ground systems will ensue. A performance analysis of the impact of high variance in demand has been conducted using our Multi-mission Advanced Communications Hybrid Environment for Test and Evaluation (MACHETE) simulation tool. A comparison is made regarding the incorporation of Quality of Service (QoS) mechanisms and the resulting ground-toground Wide Area Network (WAN) bandwidth necessary to meet latency requirements across different user missions. It is shown that substantial reduction in WAN bandwidth may be realized through QoS techniques when low data rate users with low-latency needs are mixed with high data rate users having delay-tolerant traffic. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Low power consumption lasers for miniature optical spectrometers for trace gas analysis en_US
dc.subject prioritization en_US
dc.subject traffic en_US
dc.subject ground network en_US
dc.subject Deep Space Network en_US
dc.title The impact of traffic prioritization on Deep Space Network Mission traffic. en_US
dc.type Preprint en_US

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