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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 資訊工程學系 > 期刊論文 >  Adaptive scheduling algorithm for TDM switching systems

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/12877

    Title: Adaptive scheduling algorithm for TDM switching systems
    Authors: Chen,Wen-Tsuen
    教師: 陳文村
    Date: 1995
    Publisher: Institute of Electrical and Electronics Engineers Inc
    Relation: Communications, IEEE Transactions on
    Volume 43,Issue 234,Feb-Mar-Apr 1995 Page(s):651-658
    Keywords: Switching systems
    Adaptive algorithms
    Time division multiplexing
    Telecommunication traffic
    Packet switching
    Computational complexity
    Switching networks
    Abstract: In this paper, we consider the scheduling problem in time-division multiplexed (TDM) switching systems. In previous works, the interdependence between traffic demands in two consecutive frames is neglected, and scheduling algorithms found up to now have time complexities O(N5) or O(N4.5), where N is the switch size. However, in many applications like voice or video communications, if a source transmits a packet to a destination in a frame, it is highly probable that it will also transmit a packet to the same destination in the next frame. So it is not necessary to schedule incoming packets for every frame if we can preserve all the switching patterns for the nearest scheduled frame and update the patterns appropriately according to the changes of traffic demands. The adaptive algorithm proposed in this paper assigns time slots to packets according to the changes of traffic demands. This algorithm has the worst case time complexity O(N2 L), where L is the TDM frame length. Comparing the time complexity of the adaptive algorithm with those of previous scheduling algorithms, the adaptive algorithm can perform better than previous scheduling algorithms when N is large and/or L is small. Since traffic demands in consecutive frames are expected to be interdependent in many applications, the proposed algorithm may offer as an efficient alternative for scheduling time slots in these applications.
    Relation Link: http://ieeexplore.ieee.org/Xplore/dynhome.jsp
    URI: http://nthur.lib.nthu.edu.tw/handle/987654321/12877
    Appears in Collections:[資訊工程學系] 期刊論文
    [通訊工程研究所] 期刊論文
    [電腦與通訊科技研發中心] 期刊論文

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