Changmin Park

Publications (2)0 Total impact

• Conference Proceeding: Power management of multi-radio Mobile Nodes using HSDPA interface sensitive APs

  Hyunho Park, Junghoon Jee, Changmin Park
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  ABSTRACT: The multi-radio interface MN (mobile node) has battery problem with power consumption from each interface. To reduce power consumption, we adopt that the power of the interface of the unused radio interface should be off. However, the MN can have network discovery problems. Therefore we propose the HSDPA interface sensitive AP (access point) and the power management procedure for the muti-radio interface MN using the WiFi interface and the HSDPA interface. We will show the reduction of energy consumption using the proposed AP and the power management procedure based on a power measurement experiment.
  Advanced Communication Technology, 2009. ICACT 2009. 11th International Conference on; 03/2009
• Conference Proceeding: Interface selection for power management in UMTS/WLAN overlaying network

  M.Z. Chowdhury, Yeong Min Jang, Choong Sub Ji, Sunwoong Choi, Hongseok Jeon, Junghoon Jee, Changmin Park
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  ABSTRACT: The multiple choices of access networks offer different opportunities and overcome the limitations of other technologies. Optimal selection of interface is a big challenge for multiple interfaces supported mobile terminals to make a seamless handover and to optimize the power consumption. Seamless handover, resource management, and CAC to support QoS and multiple interface management to reduce power consumption in mobile terminal are the most important issues for the UMTS/WLAN overlaying network. The access of both interfaces simultaneously can reduce the handover latency and data loss in heterogeneous handover. The MN may maintain one interface connection while other interface can be used for handover process. But the access of both interfaces increases the consumption of power in MN. In this paper we present an efficient interface selection scheme including interface selection algorithms, interface selection mechanism and CAC considering battery power consumption for overlaying networks. MN's battery power level and provision of QoS/QoE in the target interface are considered as important parameters for our interface selection algorithm. The MIH is also introduced for interface selection.
  Advanced Communication Technology, 2009. ICACT 2009. 11th International Conference on; 03/2009