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    题名: Effective Bandwidth Allocation for WiMAX Mesh Network
    作者: 張宏慶
    Jang,Hung-Chin;Lin,Wei-Ching
    贡献者: 國立政治大學資訊科學系
    关键词: WiMAX Mesh Network
    日期: 2009-07
    上传时间: 2010-05-27 16:51:29 (UTC+8)
    摘要: The aim of this paper is to reduce the media access delay in a WiMAX mesh network. We observe that as the number of subscriber stations (SS) in a neighborhood increases, the processes of transmission opportunity (TO) competition and 3- way handshake are easy to fail. This may degrade transmission efficiency and increase packet transmission delay. Besides, the minislot allocation defined in the WiMAX mesh mode may cause many lower priority services reserve earlier minislots than that of higher priority services like rtPS. This may cause great negative impact on delay-sensitive traffic. In this paper, we design a QoS classifier to enqueue packets according to different QoS service classes, present a dynamic holdoff exponent mechanism to reduce control subframe delay, and propose a Neighborhood-Based Minislot Allocation (NBMA) mechanism to reduce data subframe delay. Simulations show that the proposed methodology outperforms that of IEEE 802.16 and Baye’s DynExp in delay, jitter and throughput.
    關聯: Journal of Systemics, Cybernetics & Informatics,8(2),36-40
    数据类型: article
    显示于类别:[資訊科學系] 期刊論文

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