국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Trade-off Analysis Report
저자	Chris Dhas
Keyword	Network; Protocol
URL	http://gltrs.grc.nasa.gov/reports/2000/CR-2000-209785.pdf
보고서번호	NASA CR-2000-209785
발행년도	2000
출처	NASA Glenn Research Center
ABSTRACT	NASAchr(39)s Glenn Research Center (GRC) defines and develops advanced technology for higi priority national needs in communications technologies for application to aeronautics and space. GRC tasked Computer Networks and Software Inc. (CNS) to examine protocols and architectures for an InSpace Intemet Node. CNS has developed a methodology for network reference models to support NASAchr(39)s four mission areas: Earth Science, Space Science, Human Exploration and Development of Space (HEDS), Aerospace Technology. CNS previously developed a report which applied the methodology to three space Internetbased communications scenarios for future missions. CNS conceptualized, designed, and developed space Internetbased communications protocols and architectures for each of the independent scenarios. GRC selected for further analysis the scenario that involved unicast communications between a LowEarthOrbit (LEO) International Space Station (ISS) and a ground terminal Internet node via a Tracking and Data Relay Satellite (TDRS) transfer. This report contains a tradeoff analysis on the selected scenario. The analysis examines the performance characteristics of the various protocols and architectures. The tradeoff analysis incorporates the results of a CNS developed analytical model that examined performance parameters.