Reducing handoff delay of wireless access in vehicular environments by artificial neural network-based geographical fingerprint
學年 99
學期 2
出版（發表）日期 2011-03-01
作品名稱 Reducing handoff delay of wireless access in vehicular environments by artificial neural network-based geographical fingerprint
作品名稱（其他語言）
著者 Wu, T.-Y.; Weng, W.-F.
單位 淡江大學電機工程學系
出版者 Stevenage: The Institution of Engineering and Technology
著錄名稱、卷期、頁數 IET Communications 5(4), pp.542-553
摘要 Wireless access in vehicular environments (WAVE) can offer service to improve traffic safety and efficiency, and to reduce vehicle pollution. Compared with handheld devices, the chief terminals in vehicular environments, vehicles, have higher mobility. Thus, it can be anticipated that in such environments, the terminal devices may often move from one WAVE mode basic service set (WBSS) to another to exchange data and its probability for the handoff to occur is undoubtedly higher than handheld terminal devices. However, without taking high mobility into consideration, traditional IEEE 802.11 wireless transmissions were insufficient under acute moves. Furthermore, vehicular communications usually take place outdoors and the transmission quality might be influenced by other factors, like the weather. Based on different vehicular environments, this paper probes into the handoff and proposes to establish the geographical fingerprint by artificial neural network (ANN) and adjust the transmitted power of access points (APs) according to the weathers to maintain the service region and signal strength. By the measurements in advance, the handoff points can be established to reduce the handoff delay and the suitable handoff points be adjusted in accordance with vehicle speed.
關鍵字
語言 en
ISSN 1751-8628
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Wu, T.-Y.
審稿制度
國別 GBR
公開徵稿
出版型式 紙本
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