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�������պ����ѧѧ�� 2011, Vol. 37 Issue (10) :1233-1237    DOI: CNKI:11-2625/V.20111020.1126.008
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Quality of service guarantee for avionics high-speed switched network
Wang Haotian, Zhou Li, Liu Cheng, Xiong Huagang*
School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ �Ա�֤���յ��Ӹ��ٽ���ʽ�����ʵʱ�Ժ͸ߴ���ΪĿ��,�������ͨ��(FC,Fibre Channel)ͨ��Э������ڲ��ָ���(WDM,Wavelength Division Multiplexing)�������֮�ϵļܹ�.����������ʵʱ������������������ģ��,����˻��ڸ���ƥ��������ѯ(LOR,Load-matching Output Round)�����㷨.���㷨��ʹ��һ���ٲü��ɴﵽ����/��������ƥ��(100%).����LOR�㷨�ĺ��Ĵ���,ʱ�临�ӶȽ�ΪO(1),������Ӳ����ʵ��.���ͨ����LOR�㷨Ƕ�뵽���紦������,ע��ʱ�����еĸ�������,�Է�����������(�ӳ١����ºͳ�ʱ��Ϣ��)Ϊ���ܺ���ָ�����ʵ��,�������LOR�㷨���Ḻ��(30%)��,�������������뾭���㷨(iSLIP, DRR, EDRR)������ƽ;���ظ���(70%)��,��LOR�㷨�������ӳٵ�ʵʱ��Ҫ��,��LOR�����ʸ��ھ����㷨��10���ٷֵ�,��ʱ��Ϣ���Ⱦ����㷨����100������.
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Abstract�� To achieve avionics network-s real-time and high bandwidth performance, the fibre channel(FC) over wavelength division multiplexing(WDM) architecture was established, which adopt the periodical flows for real-time communication in switches, and the scheduling algorithm based on load-matching output port round(LOR)was proposed. Using only once arbitration, LOR could obtain input/output port-s maximum matching (100%). Core code of LOR was described after that, which had O(1) complexity and could be embed into hardware suitably. Finally, the experiments were conducted at network processor under time-sensitive load in term of quality of service (QoS) parameters (delay, throughput and overtime packets number), and the results show that under low load (30%) LOR algorithm has the same QoS performance with traditional algorithms (iSLIP, DRR, EDRR), but under heavy load (70%) only LOR could satisfy real-time delay constraint, and throughput of LOR is nearly more than 10% than traditional algorithms, and overtime packet number of LOR is less 100 than traditional algorithms-.
Keywords�� avionics   computer networks   quality of service   scheduling algorithm   network performance   maximum-matching     
Received 2010-06-07;
Fund:

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�����, ����, ����, �ܻ���.���յ��Ӹ��ٽ���ʽ����ķ���������֤����[J]  �������պ����ѧѧ��, 2011,V37(10): 1233-1237
Wang Haotian, Zhou Li, Liu Cheng, Xiong Huagang.Quality of service guarantee for avionics high-speed switched network[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2011,V37(10): 1233-1237
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http://bhxb.buaa.edu.cn//CN/CNKI:11-2625/V.20111020.1126.008     ��     http://bhxb.buaa.edu.cn//CN/Y2011/V37/I10/1233
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