淡江大學機構典藏:Item 987654321/59842
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 64178/96951 (66%)
Visitors : 10448420      Online Users : 21629
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
    •  Adv. Search
    Home ‧ Login ‧ Upload ‧ Help ‧ About ‧ Administer Goto mobile version


    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/59842


    Title: A Novel Multi-Channel MAC Protocol with Directional Antenna for Enhancing Spatial Reuse and Bandwidth Utilization in WLANs
    Authors: Chang, Chih-Yung;Chen, Yu-Chieh;Hung, Li-Ling;Chang, Sheng-Wen
    Contributors: 淡江大學資訊工程學系
    Keywords: Ad hoc network;IEEE802.11;MAC protocol;Multi-channel;Directional antenna
    Date: 2009-09
    Issue Date: 2011-10-05 22:20:23 (UTC+8)
    Publisher: Maryland Heights: Academic Press
    Abstract: This paper aims at developing an efficient MAC protocol for wireless LAN by considering multi-channel and directional antennae. Extending IEEE 802.11 to a multi-channel environment not only exploits the bandwidth utilization but also reduces the degree of contentions. Involving directional antennae in designing multi-channel MAC protocol additionally increases the spatial reuse, allowing more parallel communications. This study proposes an efficient Multi-Channel MAC protocol with a Directional Antenna (MCDA) for WLAN. Since each station is only equipped with a single antenna, communicating pairs that progress their communications on data channels cannot maintain the channel usage information which is only obtained from the control channel, raising the channel collision problem. The proposed protocol adopts the channel switch sequence (CSS) mechanism to cope with the channel collision problem and to reduce message exchange overhead for switching channels. According to the state management, MCDA then controls directional antenna transmitting data on a selected channel to exploit the opportunities of spatial reuse, and to maintain fairness among communicating pairs. Simulation results show that the proposed MCDA protocol maintains the fairness and significantly improves bandwidth utilization and throughput.
    Relation: Journal of Parallel and Distributed Computing 69(10), pp.824-837
    DOI: 10.1016/j.jpdc.2009.07.006
    Appears in Collections:[Graduate Institute & Department of Computer Science and Information Engineering] Journal Article

    Files in This Item:

    File SizeFormat
    index.html0KbHTML323View/Open

    All items in 機構典藏 are protected by copyright, with all rights reserved.

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback