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DSN Wide Area Network Architecture, Capacity and Performance

Authors:
Timothy Pham
Roger Cortez
Jason Liao

Keywords: DSN; network architecture; network design

Abstract:
This paper discusses the architecture of the wide area network that connects key communications facilities within the National Aeronautic and Space Administration (NASA) Deep Space Network (DSN). Several considerations are given to the design of this wide area network to ensure a timely, reliable, and secure data delivery between the mission users and their spacecraft. The network star configuration simplifies data delivery to users and minimizes operational cost. The dual-path connections maximize the system reliability, with geographical diversity in data routing to avoid single point of failure. Data encryption enhances the protection of mission users’ data. The system bandwidth is determined by balancing the needs to minimize the operating bandwidth cost and to have sufficient bandwidth to be able to deliver data to all users within the required. The DSN uses a class base weighted fair queuing (CBWFQ) method in its data delivery. This scheme guarantees a minimum bandwidth to each class of users and allows users to also access any unused bandwidth by other groups. The paper will also show the performance of system reliability and bandwidth margin.

Pages: 19 to 23

Copyright: Copyright (c) The Government of NASA, 2017. Used by permission to IARIA.

Publication date: April 23, 2017

Published in: conference

ISSN: 2308-4480

ISBN: 978-1-61208-545-6

Location: Venice, Italy

Dates: from April 23, 2017 to April 27, 2017