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31 条记录 (耗时 0.017 秒)

    System and method for controlling power saving mode in wireless portable network system
    2.
    发明授权
    System and method for controlling power saving mode in wireless portable network system 有权
    在无线便携式网络系统中控制省电模式的系统和方法

    公开(公告)号：US07769414B2

    公开(公告)日：2010-08-03

    申请号：US10565008

    申请日：2004-07-16

    申请人： Chul-Sik Yoon ,  Soon-Yong Lim ,  Jae-Heung Kim ,  Kun-Min Yeo ,  Byung-Han Ryu ,  Seung-Ku Hwang

    发明人： Chul-Sik Yoon ,  Soon-Yong Lim ,  Jae-Heung Kim ,  Kun-Min Yeo ,  Byung-Han Ryu ,  Seung-Ku Hwang

    IPC分类号： H04M1/00

    CPC分类号： G06F1/3209 ,  H04W52/0219 ,  H04W76/20 ,  Y02D70/142 ,  Y02D70/146

    摘要： Disclosed is a power saving mode control system (200) and method in a wireless portable Internet system. Stations in the sleep mode are grouped by aligning listening intervals of the stations which enter the sleep mode in the power saving management system wherein the sleep interval for receiving no traffic data is exponentially increased. Therefore, the sleep mode of the grouped subscriber stations are easily managed, and power saving efficiency is enhanced and system complexity is lowered by easily and quickly detecting data states provided to the corresponding stations.

    摘要翻译： 公开了一种无线便携式因特网系统中的省电模式控制系统（200）和方法。 在省电管理系统中，通过对进入休眠模式的站的监听间隔进行对睡眠模式中的站进行分组，其中用于接收没有业务数据的睡眠间隔指数地增加。 因此，容易地管理分组用户站的睡眠模式，并且通过容易且快速地检测提供给相应站的数据状态来提高省电效率并降低系统复杂度。

    System and Method for Controlling Power Saving Mode in Wireless Portable Network System
    3.
    发明申请
    System and Method for Controlling Power Saving Mode in Wireless Portable Network System 有权
    无线便携式网络系统节能模式控制系统与方法

    公开(公告)号：US20080043656A1

    公开(公告)日：2008-02-21

    申请号：US10565008

    申请日：2004-07-16

    申请人： Chul-Sik Yoon ,  Soon-Yong Lim ,  Jae-Heung Kim ,  Kun-Min Yeo ,  Byung-Han Ryu ,  Seung-Ku Hwang

    发明人： Chul-Sik Yoon ,  Soon-Yong Lim ,  Jae-Heung Kim ,  Kun-Min Yeo ,  Byung-Han Ryu ,  Seung-Ku Hwang

    IPC分类号： G08C17/00

    CPC分类号： G06F1/3209 ,  H04W52/0219 ,  H04W76/20 ,  Y02D70/142 ,  Y02D70/146

    摘要： Disclosed is a power saving mode control system (200) and method in a wireless portable Internet system. Stations in the sleep mode are grouped by aligning listening intervals of the stations which enter the sleep mode in the power saving management system wherein the sleep interval for receiving no traffic data is exponentially increased. Therefore, the sleep mode of the grouped subscriber stations are easily managed, and power saving efficiency is enhanced and system complexity is lowered by easily and quickly detecting data states provided to the corresponding stations.

    摘要翻译： 公开了一种无线便携式因特网系统中的省电模式控制系统（200）和方法。 在省电管理系统中，通过对进入休眠模式的站的监听间隔进行对睡眠模式中的站进行分组，其中用于接收没有业务数据的睡眠间隔指数地增加。 因此，容易地管理分组用户站的睡眠模式，并且通过容易且快速地检测提供给相应站的数据状态来提高省电效率并降低系统复杂度。

    Automatic gain control device having variable gain control interval and method thereof
    4.
    发明申请
    Automatic gain control device having variable gain control interval and method thereof 失效
    具有可变增益控制间隔的自动增益控制装置及其方法

    公开(公告)号：US20070135071A1

    公开(公告)日：2007-06-14

    申请号：US11636201

    申请日：2006-12-08

    申请人： Il-Gu Lee ,  Sok-Kyu Lee ,  Hee-jung Yu ,  Eun-Young Choi ,  Chan-Ho Yoon ,  Jung-Bo Son ,  Deuk-Su Lyu ,  Seung-Wook Min ,  Tae-hyun Jeon ,  Seung-Chan Bang ,  Seung-Ku Hwang

    发明人： Il-Gu Lee ,  Sok-Kyu Lee ,  Hee-jung Yu ,  Eun-Young Choi ,  Chan-Ho Yoon ,  Jung-Bo Son ,  Deuk-Su Lyu ,  Seung-Wook Min ,  Tae-hyun Jeon ,  Seung-Chan Bang ,  Seung-Ku Hwang

    IPC分类号： H04B1/06 ,  H04B7/00

    CPC分类号： H04W52/52

    摘要： An exemplary automatic gain control device includes: a radio frequency receiver for receiving a plurality of first signals through a plurality of antennas, respectively controlling gains of the plurality of first received signals, and outputting the plurality of the first signals having the controlled gain as a plurality of second signals; a signal saturation detecting unit for outputting a saturation index determination value when the number of plurality of second signals that are greater than a threshold value is greater than a predetermined number; and a gain controlling unit for comparing power values of the plurality of second signals to detect one power value, and outputting a gain value determined based on a detected power value and a saturation index determination value to the radio frequency receiver.

    摘要翻译： 示例性的自动增益控制装置包括：射频接收器，用于通过多个天线接收多个第一信号，分别控制多个第一接收信号的增益，并将具有受控增益的多个第一信号作为 多个第二信号; 信号饱和检测单元，当大于阈值的多个第二信号的数量大于预定数量时，输出饱和度指标确定值; 以及增益控制单元，用于对所述多个第二信号的功率值进行比较，以检测一个功率值，并将基于检测到的功率值和饱和度指标确定值确定的增益值输出到所述射频接收器。

    Method for Constructing Frame Preamble in Ofdm Wireless Communication System, and Method for Acquiring Frame Synchronization and Searching Cells Using Preamble
    7.
    发明申请
    Method for Constructing Frame Preamble in Ofdm Wireless Communication System, and Method for Acquiring Frame Synchronization and Searching Cells Using Preamble 审中-公开
    在OFDM无线通信系统中构造帧前缀的方法及使用前导码获取帧同步和搜索单元的方法

    公开(公告)号：US20080043858A1

    公开(公告)日：2008-02-21

    申请号：US10584716

    申请日：2004-10-27

    申请人： Hyoung-Soo Lim ,  Choong-Il Yeh ,  Yu-Ro Lee ,  Dong-Seung Kwon ,  Seung-Ku Hwang

    发明人： Hyoung-Soo Lim ,  Choong-Il Yeh ,  Yu-Ro Lee ,  Dong-Seung Kwon ,  Seung-Ku Hwang

    IPC分类号： H04K1/10

    CPC分类号： H04J11/00 ,  H04L27/2613 ,  H04L27/2656 ,  H04L27/2675

    摘要： Disclosed are a method for constructing a frame preamble in an OFDM wireless communication system, and a method for acquiring frame synchronization and searching cells using the preamble. The preamble is arranged at the beginning of a frame and constructed of a pattern repeated an integer number of times, and a CP. The pattern has a length shorter than a single OFDM symbol interval. The length of the repetitive pattern is not limited to an integer number of times a single OFDM symbol interval. Frame synchronization can be acquired by observing cross-correlation of a received signal and reference patterns and detecting the moment when the absolute value of the cross-correlation exceeds a predetermined threshold. Otherwise, frame synchronization can be acquired by observing auto-correlation of the received signal using repeated patterns included in the received signal and detecting the moment when the absolute value of the auto-correlation becomes the maximum value.

    摘要翻译： 公开了一种在OFDM无线通信系统中构造帧前同步码的方法，以及用于使用前置码获取帧同步和搜索小区的方法。 前导码被布置在帧的开始处，并且由重复整数次的模式和CP构成。 该模式的长度短于单个OFDM符号间隔。 重复模式的长度不限于单个OFDM符号间隔的整数倍。 可以通过观察接收信号和参考模式的互相关，并且检测互相关绝对值超过预定阈值的时刻来获取帧同步。 否则，通过使用包含在接收信号中的重复模式来观察接收信号的自相关，并且检测自相关的绝对值成为最大值的时刻，可以获取帧同步。

    Transmitting and receiving systems for increasing service coverage in orthogonal frequency division multiplexing wireless local area network, and method thereof
    9.
    发明申请
    Transmitting and receiving systems for increasing service coverage in orthogonal frequency division multiplexing wireless local area network, and method thereof 有权
    用于在正交频分复用无线局域网中增加服务覆盖的发射和接收系统及其方法

    公开(公告)号：US20070115802A1

    公开(公告)日：2007-05-24

    申请号：US11635927

    申请日：2006-12-08

    申请人： Hee-Jung Yu ,  Eun-Young Choi ,  Chan-Ho Yoon ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Sok-Kyu Lee ,  Seung-Chan Bang ,  Seung-Ku Hwang

    发明人： Hee-Jung Yu ,  Eun-Young Choi ,  Chan-Ho Yoon ,  Jung-Bo Son ,  Il-Gu Lee ,  Deuk-Su Lyu ,  Tae-hyun Jeon ,  Seung-Wook Min ,  Sok-Kyu Lee ,  Seung-Chan Bang ,  Seung-Ku Hwang

    IPC分类号： H04J11/00

    CPC分类号： H04L5/0046 ,  H04L27/2613 ,  H04L27/2627 ,  H04L27/2649 ,  H04W28/14 ,  H04W72/04 ,  H04W84/12

    摘要： The present invention relates to an orthogonal frequency division multiplexing wireless local area network (LAN) transmitting/receiving system for providing expanded service coverage, and a method thereof. According to the present invention, first OFDM modulation is performed for an even-numbered time, and second OFDM modulation is performed by changing subcarrier allocation positions of first OFDM modulated symbols for an odd-numbered time. In addition, a transmitting frame including a plurality of signal fields according to the first and second OFDM modulation is transmitted. The receiving system determines a format configuration of the received frame to determine whether a signal field is repeatedly generated in the frame. When it is determined that the signal field is not repeatedly generated, corresponding demodulation is performed. When it is determined that the signal field is repeatedly performed, the signal field is demodulated by using first bit allocation information and is demodulated by using second bit allocation information having a 1/2 value of the first bit allocation information. A data field is demodulated according to the demodulated signal field.

    摘要翻译： 本发明涉及一种用于提供扩展业务覆盖的正交频分复用无线局域网（LAN）发送/接收系统及其方法。 根据本发明，对于偶数时间执行第一OFDM调制，并且通过改变奇数时间的第一OFDM调制符号的副载波分配位置来执行第二OFDM调制。 此外，发送包括根据第一和第二OFDM调制的多个信号字段的发送帧。 接收系统确定接收到的帧的格式配置，以确定帧中是否重复产生信号字段。 当确定信号域不被重复产生时，执行相应的解调。 当确定重复执行信号场时，通过使用第一比特分配信息解调信号场，并且通过使用具有第一比特分配信息的1/2值的第二比特分配信息进行解调。 根据解调信号字段对数据字段进行解调。

    Uplink ranging system and method in OFDMA system
    10.
    发明申请
    Uplink ranging system and method in OFDMA system 有权
    OFDMA系统上行测距系统及方法

    公开(公告)号：US20050141474A1

    公开(公告)日：2005-06-30

    申请号：US10971787

    申请日：2004-10-21

    申请人： Young-Ha Lee ,  Jun-Woo Kim ,  Youn-Ok Park ,  Seung-Ku Hwang

    发明人： Young-Ha Lee ,  Jun-Woo Kim ,  Youn-Ok Park ,  Seung-Ku Hwang

    IPC分类号： H04J11/00 ,  H04J3/06 ,  H04L5/02 ,  H04L27/26

    CPC分类号： H04J3/0682 ,  H04L5/023 ,  H04L27/2655

    摘要： Disclosed is a ranging system and method in an OFDMA system. The ranging system includes complex exponential twiddle storage units for respectively storing complex exponential twiddle factors corresponding to a timing error, complex multipliers for respectively complex-multiplying the complex exponential twiddle factors by received uplink ranging data, code correlators for respectively correlating the outputs of the complex multipliers and ranging codes, and threshold comparators for respectively comparing the outputs of the code correlators with a threshold.

    摘要翻译： 公开了OFDMA系统中的测距系统和方法。 测距系统包括用于分别存储对应于定时误差的复指数旋转因子的复指数旋转存储单元，用于分别复数乘以接收的上行测距数据的复指数旋转因子的复乘数，用于分别将复数的输出相关联的码相关器 乘法器和测距码，以及用于分别比较码相关器的输出与阈值的阈值比较器。