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Wireless ATM MAC layer protocol using WDWEDF and two-phase scheduling algorithm

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5 Author(s)
Sungwon Lee ; IMT2000 Syst. Dev. Group, Samsung Electron Inc., South Korea ; Young-Jae Song ; Dong-Ho Cho ; Yong-Bae Dhong
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We propose and evaluate the performance of the wireless ATM MAC layer protocol to support efficiently various ATM traffic, such as CBR, VBR, ABR and UBR, in wireless ATM network environments for the reverse and forward link. The proposed MAC protocol could extend efficiently the service discipline of ATM traffic from wired network to wireless ATM network environments. Thus, the available bandwidth, which is remaining except the bandwidth for CBR and VBR traffic, could be effectively allocated to ABR and UBR traffic. Especially, in view of the reverse link, a two-phase scheduling algorithm supports successfully the variable characteristics of VBR traffic. Also, in view of the forward link, 'wireless dynamic weighted earliest deadline first' scheduling algorithm minimizes the mean cell delay and required buffer size. Simulation results show that proposed method provides effective performance in wireless ATM environments.

Published in:

Global Telecommunications Conference, 1999. GLOBECOM '99  (Volume:5 )

Date of Conference:

1999