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�������պ����ѧѧ�� 2010, Vol. 36 Issue (12) :1392-1395    DOI:
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Hard real-time multichannel scheduling design in avionics WDM networks
Zhou Li, Ding Fan, Xiong Huagang*
School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� For avionics hard-time network, a composited wavelength division multiplexing (WDM) structure based on broadcasting network and wavelength routing network and scheduling structure model were proposed. For the hard real-time messages in the multichannel networks, a load ratio round-robin schedule method was proposed which allocating weight based on message load ratio in multichannel. Analysis of the differences between the interior messages and the exterior messages in the subsystem were given. Then the hard real-time schedulability conditions which the interior messages scheduled for one time and the interior messages scheduled for many times were derived to satisfy hard real-time communication of all of the messages in the avionics system. The key parameters were designed and optimized from the system resource usability and stability aspect for the real avionics system. Finally, a practice example was given.
Keywords�� avionics   wavelength division multiplexing   real time systems   scheduling algorithms     
Received 2009-11-03;


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����, ����, �ܻ���.���յ���WDM������ŵ�ǿʵʱ�������[J]  �������պ����ѧѧ��, 2010,V36(12): 1392-1395
Zhou Li, Ding Fan, Xiong Huagang.Hard real-time multichannel scheduling design in avionics WDM networks[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2010,V36(12): 1392-1395
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