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    • 51. 发明授权
    • System and method for assigning a sub-channel in a BWA communication system
    • 在BWA通信系统中分配子信道的系统和方法
    • US07526292B2
    • 2009-04-28
    • US11266940
    • 2005-11-04
    • Jun-Hyung KimJung-Won KimJeong-Heon Kim
    • Jun-Hyung KimJung-Won KimJeong-Heon Kim
    • H04Q7/20
    • H04W72/085H04W72/0413H04W72/042H04W72/0453
    • A method for requesting a Base Station (BS) to assign a sub-channel by a Subscriber Station (SS) in a Broadband Wireless Access (BWA) communication system including the SS and the BS, the BS assigning the sub-channel to the SS by a predetermined scheme. The method includes determining by the SS an assignment scheme of a sub-channel currently assigned to the SS and confirming channel quality indicator of the sub-channel assigned by the determined sub-channel assignment scheme, transmitting, to the BS, a codeword representing a sub-channel assignment scheme to be converted, when the SS determines a need to convert the current sub-channel assignment scheme, and receiving a sub-channel through the converted sub-channel assignment scheme according to the transmitted codeword.
    • 一种用于请求基站(BS)在包括SS和BS的宽带无线接入(BWA)通信系统中由订户站(SS)分配子信道的方法,BS将子信道分配给SS 通过预定方案。 该方法包括由SS确定当前分配给SS的子信道的分配方案,并确定由确定的子信道分配方案分配的子信道的信道质量指示符,向BS发送表示 子信道分配方案,当SS确定需要转换当前子信道分配方案时,根据所发送的码字通过转换的子信道分配方案接收子信道。
    • 53. 发明授权
    • Power factor correction circuit and output voltage control method thereof
    • 功率因数校正电路及其输出电压控制方法
    • US07501800B2
    • 2009-03-10
    • US11232737
    • 2005-09-21
    • Jung-Won KimDae-Jung Kim
    • Jung-Won KimDae-Jung Kim
    • G05F1/40
    • H02M1/4225G05F1/70Y02B70/126
    • Disclosed is a power factor correction circuit for varying an output voltage according to an input voltage, and an output voltage control method thereof. A reference voltage is generated corresponding to a voltage at an output terminal of a boost circuit at a predetermined time by using the status in which the voltage at the output terminal thereof has information on an input AC voltage until the predetermined time after the input AC voltage is applied in the boost circuit. The output voltage is controlled to be generated according to the reference voltage. Therefore, the output voltage is generated corresponding to the input AC voltage without any additional devices, and reduces power loss.
    • 公开了根据输入电压改变输出电压的功率因数校正电路及其输出电压控制方法。 通过使用其输出端的电压具有关于输入AC电压的信息的状态,直到在输入AC电压之后的预定时间之后,对应于在预定时间的升压电路的输出端处的电压产生参考电压 被应用在升压电路中。 输出电压被控制为根据参考电压产生。 因此,输出电压是与输入交流电压相对应而产生的,而没有任何附加的装置,并减少功率损耗。