Cooperative Heterogeneous Network Interworking between WiMAX and WiFi

  • Hae Jung Kim
  • Chan Jung Park
  • Ronny Yongho Kim
Part of the Communications in Computer and Information Science book series (CCIS, volume 206)


As more wireless devices are being connected to the Internet, data traffic is growing and expected to increase beyond wireless network’s capacity in near future. Considering radio spectrum is limited, the efficient way to support increasing data traffic in cellular networks such as mobile WiMAX, operating in license band, is using WiFi network operating in license exempt band. By employing WiFi, mobile WiMAX network can offload some traffic to WiFi networks. In terms of admission control and Quality of Service (QoS) control, WiFi employs simple strategy as compared with cellular network. However, when WiFi is used for traffic offloading of cellular networks, cellular users’ QoS should be continuously guaranteed in the WiFi networks. Therefore, clear interworking scenarios and control procedures between WiFi and WiMAX should be defined. In this paper, we present two most prospective collaborative heterogeneous interworking scenarios between WiFi and WiMAX, and collaborative heterogeneous architecture and protocols are proposed. Efficient and easy handover scheme in the overlay collaborative heterogeneous network interworking is also proposed and its benefits are verified with simulations.


4G IMT-Advanced IEEE 802.11 IEEE 802.16 WiFi WiMAX Heterogeneous Network 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Hae Jung Kim
    • 1
  • Chan Jung Park
    • 1
  • Ronny Yongho Kim
    • 2
  1. 1.Department of Computer Science and EngineeringGangneung-Wonju National UniversityWonjuKorea
  2. 2.School of Computer EngineeringKyungil UniversityKorea

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