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Volume 34 Issue 04
Apr.  2008
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Journal of Beijing University of Aeronautics and Astronautics  > 2008  >  34(04): 396-399.
Duan Jingyuan, Zhang Chunxi, Shi Jieqinet al. QoS analysis on IEEE- 1394b fiber optical bus system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(04): 396-399. (in Chinese)
Citation: Duan Jingyuan, Zhang Chunxi, Shi Jieqinet al. QoS analysis on IEEE- 1394b fiber optical bus system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(04): 396-399. (in Chinese)
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QoS analysis on IEEE- 1394b fiber optical bus system

  • School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 19 Apr 2007
  • Publish Date: 30 Apr 2008
    Abstract
  • In order to solve the problem of network delay and information obstacle in avionics system, the key characteristics which are bandwidth reservation mechanism and average response time of IEEE-1394b fiber optical bus system used in avionics system were analyzed. The equation which the QoS (quality of service)of isochronous data transfer and asynchronous data transfer must satisfy was derived (hard QoS) on the ground of bandwidth reservation mechanism in IEEE-1394b protocol. Considering the mixture of isochronous and asynchronous requests in admission control for QoS service, the QoS of asynchronous requests was analyzed based on queuing theory (soft QoS). For the case of ignoring reply interval, the average response time of IEEE-1394b asynchronous requests queues was got. The QoS service of IEEE-1394b was evaluated in IEEE-1394b fiber optical bus experimental system in the end. The theoretic derived results were verified. It has a directive meaning in QoS design of IEEE-1394b driver layer.

     

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  • [1] IEEE Std 1394bTM-2002,IEEE standard for a high-performance serial bus-amendment 2[S] [2] Huang C,Kuo T,Pang A. QoS support for usb 2.0 periodic and sporadic device requests Proceedings-25th IEEE International Real-Time Systems Symposium. RTSS 2004, 2004(11):395- 404 [3] Huang C, Kuo T, Pang A. QoS support for IEEE-1394 requests Proceedings of the 2006 ACM Symposium on Applied Computing. 2006,4(6):923- 927 [4] 张大朴,王晓,张大为,等．IEEE 1394协议及接口设计[M].西安:西安电子科技大学出版社,2004:49-68 Zhang Dapu, Wang Xiao, Zhang Dawei, et al. IEEE 1394 protocol and interface design [M]. Xi-an:Xidian University Press, 2004:49-68(in Chinese) [5] Boxma O, Meister B. Waiting-time approximations in multi-queue systems with cyclic service [J]. Performance Evaluation, 1987,7(1):59-70
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