An integrated WiMAX/WiFi architecture with QoS consistency over broadband wireless networks

Authors:
Hui-Tang Lin;Ying-You Lin;Wang-Rong Chang;Rung-Shiang Cheng
Affiliations:
Department of Electrical Engineering, National Cheng Kung University, Taiwan, R.O.C. and Institute of Computer and Communication Engineering, National Cheng Kung University, Taiwan, R.O.C.;Institute of Computer and Communication Engineering, National Cheng Kung University, Taiwan, R.O.C.;Department of Electrical Engineering, National Cheng Kung University, Taiwan, R.O.C.;Department of Electrical Engineering, National Cheng Kung University, Taiwan, R.O.C.
Venue:
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
Year:
2009

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Abstract

WiMAX and WiFi have emerged as promising broadband access solutions for the latest generation of wireless MANs and LANs, respectively. Their complementary features enable the use of WiMAX as a backhaul service to connect multiple dispersed WiFi hotspots to the Internet. This study proposes an integrated architecture utilizing a novel WiMAX/WiFi Access Point (W2-AP) device to effectively combine the WiMAX and WiFi technologies. In the proposed architecture, the protocol operation of the WiFi hotspots is the same as that of the WiMAX system. As a result, the WiFi network can support connection-oriented transmissions and QoS in a similar fashion to the WiMAX system, and thus a considerable improvement in the delay performance is obtained. The numerical results obtained using a Qualnet simulator confirm both the effectiveness and the efficiency of the proposed architecture.