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Available Bandwidth Measurement Method Considering Idle Period and Transmission Overheads in IEEE 802.11b DCF Wireless LANs
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 Title & Authors
Available Bandwidth Measurement Method Considering Idle Period and Transmission Overheads in IEEE 802.11b DCF Wireless LANs
Koo, Hye-Lim; Ha, Sang-Yong; Ryu, Ki-Yeol; Roh, Byeong-Hee;
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 Abstract
The lack of QoS (Quality of Service) support functionalities in IEEE 802.11 DCF mode makes it difficult to provide real-time multimedia services in WLANs. In this paper, we propose an effective available bandwidth measurement method in IEEE 802.11b DCF environments. The proposed method measures the total channel idle time and the collision probability during each measurement period. Then, the available bandwidth is calculated by considering those measured information and the transmission overheads at MAC and PRY layers. The performances of the proposed method are evaluated using OPNET simulator. The simulation results show that the proposed method provides more exact results than existing comparable schemes.
 Keywords
Available Bandwidth Estimation;IEEE 802.11b;DCF;MAC/PHY overhead;OPNET;
 Language
Korean
 Cited by
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