近年來興起一個前瞻性無線技術，稱之為無線網狀網路（Wireless Mesh Networks），WMNs 以所費低廉方式提供無線網路最後一哩存取Internet，同時具備ad hoc 網路全部優點，例如自我組織（self-organization）、自我組態（self-configuration）等。儘管WMNs 骨幹部分與平面式ad hoc 網路相似，多網卡（multi-radio）的Mesh Routers 節點卻是固定不動且沒有電力限制。有鑑於此，設計於ad hoc 網路上之路由協定並不適合於WMNs。
WCETT（Weighted Cumulated Expected Transmission Time）metric 考量到intra-flow 干擾，卻未捕捉到inter-flow 干擾；而LBAR（Load-Balanced Ad hoc Routing）協定以計算節點之活躍值（nodal activity）與訊務流量干擾選擇路徑，並無支援多網卡路由，LBAR 可以在單一網卡環境表現良好，在多網卡環境卻不一定。因此，我們提出一個WMNs 上考量到Intra/Inter-flow干擾之多網卡路由協定，稱為MiRii。模擬結果顯示出我們路由協定可以改善網路效能，包含了封包成功傳送率及平均點對點延遲。 / A new promising wireless technology has emerged recently, called wireless mesh networks (WMNs). WMNs are inexpensive way to provide wireless last-mile broadband Internet access and have all the advantages of ad hoc network, such as self-organization, self-configuration. Although WMNs backbone is similar to flat ad hoc network, mesh routers with multi-radio are stationary and have no power constraints. As a result, routing protocols designed for ad hoc network may not be appropriate for WMNs.
The WCETT (Weighted Cumulated Expected Transmission Time) metric takes intra-flow interference into consideration, but does not capture inter-flow interference. LBAR (Load-Balanced Ad hoc Routing) calculates nodal activity and traffic interference for choosing a path, but does not supporting multi-radio. LBAR may be perform well in single-radio environment, but do not perform as well in multi-radios. Consequently, we incorporate a new Multi-Interface Routing with Intra/Inter-flow Interference in Wireless Mesh Networks, called MiRii. The simulations show that our routing protocol can improve the network performance including the Packet Delivery Ratio and average end-to-end delay.
| Identifer | oai:union.ndltd.org:CHENGCHI/G0093971012 |
| Creators | 劉彩鳳, Liu,Tsai-Feng |
| Publisher | 國立政治大學 |
| Source Sets | National Chengchi University Libraries |
| Language | 中文 |
| Detected Language | English |
| Type | text |
| Rights | Copyright © nccu library on behalf of the copyright holders |
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