APPARATUS AND METHOD OF SCHEDULING DATA PACKET IN A COMMUNICATION SYSTEM
    81.
    发明申请
    APPARATUS AND METHOD OF SCHEDULING DATA PACKET IN A COMMUNICATION SYSTEM 有权
    在通信系统中调度数据包的装置和方法

    公开(公告)号:US20070297415A1

    公开(公告)日:2007-12-27

    申请号:US11769317

    申请日:2007-06-27

    IPC分类号: H04L12/56

    摘要: An apparatus and method of scheduling data packets in a communication system are provided, in which the number of first-type data packets to be transmitted with priority is determined according to a predetermined criterion from among total first-type data packets, and the determined number of first-type data packets and second-type data packets are scheduled so as to transmit the determined number of first-type data packets and then transmit the second-type data packets.

    摘要翻译: 提供了一种在通信系统中调度数据分组的装置和方法,其中根据来自总第一类型数据分组的预定标准确定要优先发送的第一类型数据分组的数量,并且确定的数目 调度第一类型数据分组和第二类型数据分组,以便发送确定数量的第一类型数据分组,然后发送第二类型数据分组。

    System and method for performing soft handover in broadband wireless access communication system
    82.
    发明授权
    System and method for performing soft handover in broadband wireless access communication system 有权
    在宽带无线接入通信系统中执行软切换的系统和方法

    公开(公告)号:US07299048B2

    公开(公告)日:2007-11-20

    申请号:US11166012

    申请日:2005-06-24

    IPC分类号: H04Q7/20

    CPC分类号: H04W36/18 H04W36/08 H04W48/16

    摘要: Disclosed is a system and method for performing soft handover in a broadband wireless access communication system. An anchor base station transmits first information including channel assignment information of an active non-anchor base station when it is determined that a mobile station is to perform the soft handover, and when there are signals to be transmitted to the mobile station from the non-anchor base station, the non-anchor base station transmits second information including channel assignment information of the anchor base station when it is determined that the mobile station is to perform the soft handover, and when there are signals to be transmitted to the mobile station from the anchor base station, and the mobile station receives signals from the anchor base station and the non-anchor base station corresponding to the first information and the second information when it is determined that the mobile station is to perform the soft handover.

    摘要翻译: 公开了一种在宽带无线接入通信系统中执行软切换的系统和方法。 当确定移动台要执行软切换时,锚基站发送包括主动非锚基站的信道分配信息的第一信息,并且当有从非接入点发送到移动台的信号时, 锚定基站,当确定移动台要执行软切换时,非锚基站发送包括锚基站的信道分配信息的第二信息,并且当有待向移动台发送信号时 锚基站和移动站在确定移动台要执行软切换时从锚基站和非锚基站接收对应于第一信息和第二信息的信号。

    Switching mode power supply and method for performing protection operation thereof

    公开(公告)号:US20060209481A1

    公开(公告)日:2006-09-21

    申请号:US11359099

    申请日:2006-02-22

    IPC分类号: H02H3/24

    CPC分类号: H02M1/32 H02M3/33523

    摘要: A switching mode power supply and a corresponding method of protection operation is presented. A switching controller of the switching mode power supply receives current sensing information corresponding to the current flowing through a main switch and feedback information corresponding to an output voltage through a single terminal, and performs a protection operation when the voltage at the terminal is maintained to be lower than a reference voltage for more than a predetermined time frame. The power supply requires a low number of terminals, while preserving the protection operation function.

    System and method for optimizing handover in mobile communication system
    85.
    发明申请
    System and method for optimizing handover in mobile communication system 有权
    移动通信系统优化切换的系统和方法

    公开(公告)号:US20050282548A1

    公开(公告)日:2005-12-22

    申请号:US11146683

    申请日:2005-06-07

    IPC分类号: H04B7/26 H04W36/08 H04Q7/20

    CPC分类号: H04W36/0055 H04L1/1867

    摘要: Disclosed are a system and a method for optimizing a handover process in a mobile broadband wireless access system. The method performs handover in a mobile communication system including a mobile subscriber station, a serving base station currently providing service to the mobile subscriber station, and at least one neighbor base stations adjacent to the serving base station. The method includes the steps of receiving a handover request from the mobile subscriber station by the serving base station; instructing the mobile subscriber station to perform handover by the serving base station in response to the handover request from the mobile subscriber station and performing by the mobile subscriber station a network reentry process for fast handover in accordance with information included in a handover instruction from the serving base station.

    摘要翻译: 公开了一种在移动宽带无线接入系统中优化切换过程的系统和方法。 该方法在包括移动用户台,当前向移动用户台提供服务的服务基站以及与服务基站相邻的至少一个相邻基站的移动通信系统中执行切换。 该方法包括以下步骤:由服务基站从移动用户台接收切换请求; 指示移动用户台响应于来自移动用户台的切换请求,由服务基站执行切换,并根据包括在来自服务的切换指令中的信息由移动用户台执行用于快速切换的网络再入进程 基站。

    Switching power supply device and method
    87.
    发明申请
    Switching power supply device and method 有权
    开关电源装置及方法

    公开(公告)号:US20050078493A1

    公开(公告)日:2005-04-14

    申请号:US10920816

    申请日:2004-08-18

    IPC分类号: H02M3/28 H02M3/335

    摘要: A switching power supply includes a switch, a bias-sensor to sense the switch-voltage, and a zero-crossing detector (ZCD) to sense time instances when the bias-sensor voltage crosses zero. ZCD generates a ZCD-signal, which transitions between a first and a second level at the sensed crossing instances, with a delay. ZCD-signal is coupled to a blanking circuit, generating a blank-signal and a pulse-signal, controlling the switch. The on-time of the switch can be modified by the input voltage and load. The blank-signal between on-times is adjusted to compensate for this modification, keeping the switching frequency below a predetermined limit and reducing the switching frequency. The switching power supply further includes a pulse width modulation (PWM) signal generator, coupled to the blanking circuit and to the switch. PWM signal generator turns on the switch controlled by the pulse-signal of the blanking circuit. Blanking circuit is controlled by either the on-time or a control voltage and input voltage.

    摘要翻译: 开关电源包括开关,感测开关电压的偏置传感器,以及当偏置传感器电压跨越零时检测时间实例的过零检测器(ZCD)。 ZCD产生一个ZCD信号,该ZCD信号在感测到的交叉实例处在第一和第二电平之间以延迟转换。 ZCD信号耦合到消隐电路,产生空白信号和脉冲信号,控制开关。 可以通过输入电压和负载来修改开关的导通时间。 调整接通时间之间的空白信号以补偿该修改,保持开关频率低于预定限制并降低开关频率。 开关电源还包括脉冲宽度调制(PWM)信号发生器,耦合到消隐电路和开关。 PWM信号发生器接通由消隐电路的脉冲信号控制的开关。 消隐电路由导通时间或控制电压和输入电压控制。

    Flyback converter
    88.
    发明授权
    Flyback converter 有权
    反激转换器

    公开(公告)号:US06845019B2

    公开(公告)日:2005-01-18

    申请号:US10346807

    申请日:2003-01-17

    IPC分类号: H01F38/42 H02M3/335

    CPC分类号: H02M3/33507

    摘要: A flyback converter detects an output voltage at the primary coil without using a photo coupler and provides an essentially constant output voltage independent of the load size, thereby minimizing the number of additional coils used in the transformer circuit to realize simple construction and providing accurate power control. In one embodiment, the flyback converter includes: a transformer for changing an input voltage to a predetermined level according to a winding ratio; an output unit for rectifying the voltage signal output from the transformer into a DC signal to drive a load; a switch coupled to the primary coil of the transformer for controlling the on/off state of a power at the primary coil according to a switching control signal; a feedback unit generating a feedback signal and detecting a current of the switch to correct the feedback signal; and a switching controller operating according to the feedback signal.

    摘要翻译: 反激转换器在不使用光电耦合器的情况下检测初级线圈处的输出电压,并提供与负载尺寸无关的基本恒定的输出电压,从而最小化变压器电路中使用的附加线圈数量,以实现简单的结构并提供精确的功率控制 。 在一个实施例中,反激转换器包括:变压器,用于根据绕组比将输入电压改变到预定电平; 用于将从变压器输出的电压信号整流为DC信号以驱动负载的输出单元; 耦合到所述变压器的初级线圈的开关,用于根据开关控制信号控制所述初级线圈处的功率的导通/截止状态; 反馈单元,产生反馈信号并检测开关的电流以校正反馈信号; 以及根据反馈信号操作的开关控制器。