A cross-layer framework for video-on-demand service in multi-hop WiMax mesh networks

    Authors

    F. Xie; K. A. Hu;N. Jiang

    Comments

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    Abbreviated Journal Title

    Comput. Commun.

    Keywords

    wireless mesh network; WiMax; video-on-demand; cross-layer design; simulation; Computer Science, Information Systems; Engineering, Electrical &; Electronic; Telecommunications

    Abstract

    In this work, we introduce a cross-layer framework to favor the video-on-demand service in multi-hop WiMax mesh networks. We first propose a joint solution of admission control and channel scheduling for video streams. The proposed approach guarantees that the required data rate is achieved for video streams, which is crucial for multimedia streaming applications. An efficient and light-weight multicast routing technique is also proposed to minimize the bandwidth cost of joining a multicast tree. Furthermore, we adopt the Patching technique in the application layer to improve the capacity of the video server. Overall, the quality of the video-on-demand service is dramatically improved with the help of the efficient cooperation between the techniques proposed in different layers of the network. Simulation study shows that with the proposed approach, true video-on-demand in WiMax mesh networks can be achieved under high video request arrival rate. (C) 2008 Elsevier B.V. All rights reserved.

    Journal Title

    Computer Communications

    Volume

    31

    Issue/Number

    8

    Publication Date

    1-1-2008

    Document Type

    Article

    Language

    English

    First Page

    1615

    Last Page

    1626

    WOS Identifier

    WOS:000256856700013

    ISSN

    0140-3664

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