NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 2 of 23270
SpaceWire Plug and Play
Author and Affiliation:
Rakow, Glenn(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
McGuirk, Patrick(Micro-RDC, Albuquerque, NM, United States)
Kimmery, Clifford(Honeywell, Inc., Clearwater, FL, United States)
Jaffe, Paul(Naval Research Lab., Washington, DC, United States)
Abstract: The ability to rapidly deploy inexpensive satellites to meet tactical goals has become an important goal for military space systems. In fact, Operationally Responsive Space (ORS) has been in the spotlight at the highest levels. The Office of the Secretary of Defense (OSD) has identified that the critical next step is developing the bus standards and modular interfaces. Historically, satellite components have been constructed based on bus standards and standardized interfaces. However, this has not been done to a degree, which would allow the rapid deployment of a satellite. Advancements in plug-and-play (PnP) technologies for terrestrial applications can serve as a baseline model for a PnP approach for satellite applications. Since SpaceWire (SpW) has become a de facto standard for satellite high-speed (greater than 200Mbp) on-board communications, it has become important for SpW to adapt to this Plug and Play (PnP) environment. Because SpW is simply a bulk transport protocol and lacks built-in PnP features, several changes are required to facilitate PnP with SpW. The first is for Host(s) to figure out what the network looks like, i.e., how pieces of the network, routers and nodes, are connected together; network mapping, and to receive notice of changes to the network. The second is for the components connected to the network to be understood so that they can communicate. The first element, network topology mapping & change of status indication, is being defined (topic of this paper). The second element describing how components are to communicate has been defined by ARFL with the electronic data sheets known as XTEDS. The first element, network mapping, is recent activities performed by Air Force Research Lab (ARFL), Naval Research Lab (NRL), NASA and US industry (Honeywell, Clearwater, FL, and others). This work has resulted in the development of a protocol that will perform the lower level functions of network mapping and Change Of Status (COS) indication required by Plug 'n' Play over SpaceWire. This work will be presented to the SpaceWire working group for standardization under European Cooperation for Space Standardization (ECSS) and to obtain a permanent Protocol ID (see SpaceWire Protocol ID: What Does it Mean to You; IEEE Aerospace Conference 2006). The portion of the Plug 'n' Play protocol that will be described in this paper is how the Host(s) of a SpaceWire network map the network and detect additions and deletions of devices on a SpaceWire network.
Publication Date: Nov 01, 2006
Document ID:
20070018844
(Acquired Jun 07, 2007)
Subject Category: ELECTRONICS AND ELECTRICAL ENGINEERING
Report/Patent Number: IEEEAC Paper 1211
ISBN: ISBN 1-4244-0525-4
Document Type: Conference Paper
Meeting Information: IEEE Aerospace Conference 2007; 3-10 Mar. 2007; Big Sky, MT; United States
Meeting Sponsor: Institute of Electrical and Electronics Engineers; United States
Financial Sponsor: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 8p; In English; Original contains color and black and white illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: AEROSPACE SYSTEMS; COMMUNICATION NETWORKS; PROTOCOL (COMPUTERS); PACKETS (COMMUNICATION); MILITARY TECHNOLOGY; ELECTRICAL ENGINEERING; LOW COST; DATA LINKS; RESEARCH AND DEVELOPMENT; TOPOLOGY; AIRBORNE/SPACEBORNE COMPUTERS; MEMORY (COMPUTERS); ELECTRIC SWITCHES
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: August 23, 2011
Contact Us