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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/59924


    Title: Hierarchical Management Protocol for Constructing a QoS Communication Path in Wireless Ad Hoc Networks
    Authors: Chang, Chih Yung;Chang, Chao Tsun;Chen, Tzung Shi;Chang, Hsu Ruey
    Contributors: 淡江大學資訊工程學系
    Keywords: Clique;Agent-based Graph;Supernode;Core node;QoS;Ad Hoc network
    Date: 2007-07
    Issue Date: 2013-06-07 10:45:36 (UTC+8)
    Publisher: Philadelphia: Elsevier Inc.
    Abstract: An Ad Hoc network consists of mobile hosts that can dynamically construct a wireless network without base stations. Due to the limited communication range, a source host usually needs other hosts to relay messages to the destination in a multi-hop manner. Consequently, establishing a routing path from the source to the destination is a basic requirement for providing communication service between any pair of mobile hosts. This study proposes a two-level management approach for efficiently constructing and maintaining a QoS routing path in Ad Hoc wireless networks, significantly reducing the quantity of control packets. In the first phase, the mobile hosts are partitioned into a number of complete graphs, each represented by a Supernode managed by an agent. The Ad Hoc network topology is thus transformed to an Agent-based Graph (AG). In the second phase, some agents of a larger degree than neighboring agents are selected as core nodes. The core nodes then virtually construct a Core Graph (CG). The proposed two-level hierarchical management and bandwidth-looking-ahead technologies can efficiently establish and maintain a QoS communication path at a low control packet cost. Simulation results indicate that the proposed management model significantly reduces the number of control packets in areas with very large numbers of mobile hosts.
    Relation: Information Sciences 177(13), pp.2621-2641
    DOI: 10.1016/j.ins.2006.12.014
    Appears in Collections:[資訊工程學系暨研究所] 期刊論文

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