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�������պ����ѧѧ�� 2007, Vol. 33 Issue (01) :55-58    DOI:
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����H.323Э��ķֲ�ʽ�����о�
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Study on H.323-based distributed gatekeepers
Shen Wei, Ding Rong, Zhang Hui*
School of Computer Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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ժҪ ����H.323Э�����Ѷ����ϵͳ�Ŀ���չ��������(GK,Gatekeeper)�ṹ�������.�����һ�ֶ������ ��ʽ���ؼܹ�, �ṩ�˶�ý����Ѷ����ϵͳ�ڴ��ģ���粿��ķ���.���ֲַ�ʽ�ṹ���� �˷��˼���ʽ�ͷֲ�ʽģ�͵�ȱ��,���ܺõؽ��������֮��ĸ���ƽ������.�ն�֮��� ������ͨ��ͨ�����ڱ��������������Ϣ·�ɷ�����ʵ��,����ͨ����ɢ������ѧϰ���Զ� ����������Ϣɢ�б�.���ǵ�����֮��ĸ���ƽ������,���ܹ��������ڲ��ü���ʽ����ģ ��,������˻��ڸ���������Сƽ���㷨(BLFA,Balancing Load Factor Algorithm)�����ظ���ƽ��������.
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Abstract�� The scalability of H.323-based video conferencing system is closely re lated to the architecture of gatekeeper (GK). A distributed H .323 gatekeeper architecture based on multiple zones was proposed, providing the solution for the deployment of multimedia video conferencing system on the large scale netwo rk. This architecture did not only conquer the drawback of centralized architect ure and hierarchical architecture, but could balance the load between gatekeeper s. Design of GK-level signaling message routing based on alias format was used t o solve the communication problem between endpoints registered in different zone s. In the zone, the centralized architecture was adopted and the main-GK manage d the slave-GKs. Balancing load factor algorithm(BLFA) was presented to balance the load between gatekeepers.
Keywords�� video conferencing   architecture   large scale system   gatekeeper   loa d-balancing     
Received 2006-02-23;
Fund:

�й���һ��������(CNGI)��Ѷ����ϵͳӦ��ʾ����Ŀ(CNG I-04-15-1A)

About author: �� ΰ(1981-), ��, �㽭������, ˶ʿ��,shenw ei@nlsde.buaa.edu.cn.
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��ΰ, ����, �Ż�.����H.323Э��ķֲ�ʽ�����о�[J]  �������պ����ѧѧ��, 2007,V33(01): 55-58
Shen Wei, Ding Rong, Zhang Hui.Study on H.323-based distributed gatekeepers[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2007,V33(01): 55-58
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