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Due to the limited diffracting ability of millimeter wave (mm-wave) signals, solving the blockage problem in 60GHz WLANs is one of major challenges. Since multiple Access Points (AP) are typically employed in the indoor environment to ensure the coverage and to meet the increasing demand for extremely high data rate applications, in this paper, the authors propose a multi-AP architecture with which a MAC layer device called an Access Controller (AC) is employed to enable each station to associate and cooperate with multiple APs.
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