국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Destination-Directed, Packet-Switched Architecture for a Geostationary Communications Satellite Network
저자	William D. Ivancic, Mary Jo Shalkhauser, Eric A. Bobinsky, Nitin J. Soni, Jorge A. Quintana, Heechul Kim, Paul Wager, and Mark Vanderaar
Keyword	Packet switching; Demultiplexing; Time-division multiplexing; Time-division
URL	http://gltrs.grc.nasa.gov/reports/1993/TP-3379.pdf
보고서번호	NASA TP-3379
발행년도	1993
출처	NASA Glenn Research Center
ABSTRACT	A major goal of the Digital Systems Technology Branch at the NASA Lewis Research Center is to identify and develop critical digital components and technologies that either enable new commercial missions or significantly enhance the performance, cost efficiency, and/or reliability of existing and planned space communications systems. NASA envisions a need for low-data-rate, interactive, direct-to-the-user communications services for data, voice, facsimile, and video conferencing. The network would provide enhanced very-small-aperture terminal (VSAT) communications services and be capable of handling data rates of 64 kbps through 2.048 Mbps in 64-kbps increments. Efforts have concentrated heavily on the space segment; however, the ground segment has been considered concurrently to ensure cost efficiency and realistic operational constraints. The focus of current space segment developments is a flexible, high-throughput, fault-tolerant onboard information-switching processor (ISP) for a geostationary satellite communications network. The Digital Systems Technology Branch is investigating both circuit and packet architectures for the ISP. This report concentrates on destination-directed, packet-switched architectures for geostationary communications satellites.