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Title: The Design of QoS Mechanisms in Mobile WiMAX Network Systems with Handover Procedures
Other Titles: 具換手程序考量之移動式WiMAX網路系統的 服務品質機制設計
Authors: 孫, 易緯 Jr; 吳, 和庭 Jr; 柯, 開維 Jr; 尹, 培鑫 Jr
Keywords: WiMAX
QoS
Bandwidth allocation mechanism
Mobile system
Handover
Issue Date: 6-6-2011
Series/Report no.: NCS 2009
Abstract: This research works aim to design the QoS mechanisms for mobile WiMAX systems. We combine admission control, packet classifier, bandwidth allocation and packet scheduling to design the QoS simulation platform for such a WiMAX system.We also design the handover mechanism according to the general handover procedure specified by the IEEE802.16e-2005 standard. Finally, performance evaluations via simulations are conducted to assess the system performance for the network with or without handover procedures employed. It is found that the transmission quality is subject to the modulation rate change significantly in the mobile environments. The proposed Qos and handover mechanisms are shown to reduce connection blocking rate and packet dropping rate effectively to enhance WiMAX system efficiency. Keywords:WiMAX、QoS、Bandwidth allocation mechanism、Mobile system、Handover。
Appears in Collections:2009年 NCS 全國計算機會議

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