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Admission Control of VL in AFDX Under HRT Constraints 被引量:3

Admission Control of VL in AFDX Under HRT Constraints
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摘要 Avionics full duplex switched ethernet(AFDX) is a switched interconnection technology developed to provide reliable data exchange with strong data transmission time guarantees in internal communication of the spacecraft or aircraft.Virtual link(VL) is an important concept of AFDX to meet quality of service(QoS) requirements in terms of end-to-end message deadlines.A VL admission control algorithm in AFDX network under hard real-time(HRT) constraints is studied.Based on the scheduling prin-ciple of AFDX protocol,a packet scheduling scheme under HRT constraints is proposed,and after that an efficient VL admission control algorithm is presented.Analytical proof that the algorithm can effectively determine whether VL should be admitted is given.Finally simulative examples are presented to promote the conclusion. Avionics full duplex switched ethernet(AFDX) is a switched interconnection technology developed to provide reliable data exchange with strong data transmission time guarantees in internal communication of the spacecraft or aircraft.Virtual link(VL) is an important concept of AFDX to meet quality of service(QoS) requirements in terms of end-to-end message deadlines.A VL admission control algorithm in AFDX network under hard real-time(HRT) constraints is studied.Based on the scheduling prin-ciple of AFDX protocol,a packet scheduling scheme under HRT constraints is proposed,and after that an efficient VL admission control algorithm is presented.Analytical proof that the algorithm can effectively determine whether VL should be admitted is given.Finally simulative examples are presented to promote the conclusion.
出处 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2011年第2期195-201,共7页 中国航空学报(英文版)
基金 National Natural Science Foundation of China (60879024)
关键词 AVIONICS avionics full duplex switched ethernet virtual link SWITCH hard real-time admission control avionics avionics full duplex switched ethernet virtual link switch hard real-time admission control
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