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AIRNET: A real-time comunications network for aircraftA real-time local area network was developed for use on aircraft and space vehicles. It uses token ring technology to provide high throughput, low latency, and high reliability. The system was implemented on PCs and PC/ATs operating on PCbus, and on Intel 8086/186/286/386s operating on Multibus. A standard IEEE 802.2 logical link control interface was provided to (optional) upper layer software; this permits the controls designer to utilize standard communications protocols (e.g., ISO, TCP/IP) if time permits, or to utilize a very fast link level protocol directly if speed is critical. Both unacknowledged datagram and reliable virtual circuit services are supported. A station operating an 8 MHz Intel 286 as a host can generate a sustained load of 1.8 megabits per second per station, and a 100-byte message can be delivered from the transmitter's user memory to the receiver's user memory, including all operating system and network overhead, in under 4 milliseconds.
Document ID
19900015198
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Weaver, Alfred C. (Virginia Univ. Charlottesville, VA, United States)
Cain, Brendan G. (Virginia Univ. Charlottesville, VA, United States)
Colvin, M. Alexander (Virginia Univ. Charlottesville, VA, United States)
Simoncic, Robert (Virginia Univ. Charlottesville, VA, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1990
Subject Category
Communications And Radar
Report/Patent Number
NAS 1.26:186140
UVA/528238/CS90/101
NASA-CR-186140
Accession Number
90N24514
Funding Number(s)
CONTRACT_GRANT: NAG3-630
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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