利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

33 条记录 (耗时 0.034 秒)

    Method and apparatus for allocating channels in an orthogonal frequency division multiple access system
    4.
    发明授权
    Method and apparatus for allocating channels in an orthogonal frequency division multiple access system 有权
    用于在正交频分多址系统中分配信道的方法和装置

    公开(公告)号：US07636571B2

    公开(公告)日：2009-12-22

    申请号：US11072181

    申请日：2005-03-04

    申请人： Jae-Hyok Lee ,  Jae-Ho Jeon ,  Soon-Young Yoon ,  Seung-Joo Maeng ,  Jeong-Tae Oh ,  Ji-Ho Jang

    发明人： Jae-Hyok Lee ,  Jae-Ho Jeon ,  Soon-Young Yoon ,  Seung-Joo Maeng ,  Jeong-Tae Oh ,  Ji-Ho Jang

    IPC分类号： H04W36/00 ,  H04W72/00 ,  H04W40/00

    CPC分类号： H04W36/0072 ,  H04L5/0062 ,  H04L5/0073 ,  H04L5/0094 ,  H04W24/00 ,  H04W28/26 ,  H04W36/18 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0453

    摘要： A method for allocating a frequency to a subscriber station (SS) in handover operation in an Orthogonal Frequency Division Multiple Access (OFDMA) system. In the method, the SS checks safety channel frequencies for a target base station (BS), generates a safety channel frequency request message for requesting allocation of the checked safety channel frequencies, and transmits the safety channel frequency request message. Upon receiving the safety channel frequency request message from the SS, a serving BS allocates frequencies for a requested channel, and transmits an allocation message with the frequency allocation information to the SS. The serving BS transmits a channel allocation request message to the target BS according to the frequency allocation information. Upon receiving the channel allocation request message, the target BS allocates the safety channel frequencies to the SS.

    摘要翻译： 一种在正交频分多址（OFDMA）系统中在切换操作中向用户站（SS）分配频率的方法。 在该方法中，SS检查目标基站（BS）的安全信道频率，生成用于请求分配所检查的安全信道频率的安全信道频率请求消息，并发送安全信道频率请求消息。 在从SS接收到安全信道频率请求消息时，服务BS为所请求的信道分配频率，并向SS发送具有频率分配信息的分配消息。 服务BS根据频率分配信息向目标BS发送信道分配请求消息。 在接收到信道分配请求消息后，目标BS向SS分配安全信道频率。

    Method and apparatus for allocating channels in an orthogonal frequency division multiple access system
    5.
    发明申请
    Method and apparatus for allocating channels in an orthogonal frequency division multiple access system 有权
    用于在正交频分多址系统中分配信道的方法和装置

    公开(公告)号：US20050197132A1

    公开(公告)日：2005-09-08

    申请号：US11072181

    申请日：2005-03-04

    申请人： Jae-Hyok Lee ,  Jae-Ho Jeon ,  Soon-Young Yoon ,  Seung-Joo Maeng ,  Jeong-Tae Oh ,  Ji-Ho Jang

    发明人： Jae-Hyok Lee ,  Jae-Ho Jeon ,  Soon-Young Yoon ,  Seung-Joo Maeng ,  Jeong-Tae Oh ,  Ji-Ho Jang

    IPC分类号： H04B7/26 ,  H04Q7/20

    CPC分类号： H04W36/0072 ,  H04L5/0062 ,  H04L5/0073 ,  H04L5/0094 ,  H04W24/00 ,  H04W28/26 ,  H04W36/18 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0453

    摘要： A method for allocating a frequency to a subscriber station (SS) in handover operation in an Orthogonal Frequency Division Multiple Access (OFDMA) system. In the method, the SS checks safety channel frequencies for a target base station (BS), generates a safety channel frequency request message for requesting allocation of the checked safety channel frequencies, and transmits the safety channel frequency request message. Upon receiving the safety channel frequency request message from the SS, a serving BS allocates frequencies for a requested channel, and transmits an allocation message with the frequency allocation information to the SS. The serving BS transmits a channel allocation request message to the target BS according to the frequency allocation information. Upon receiving the channel allocation request message, the target BS allocates the safety channel frequencies to the SS.

    摘要翻译： 一种在正交频分多址（OFDMA）系统中在切换操作中向用户站（SS）分配频率的方法。 在该方法中，SS检查目标基站（BS）的安全信道频率，生成用于请求分配所检查的安全信道频率的安全信道频率请求消息，并发送安全信道频率请求消息。 在从SS接收到安全信道频率请求消息时，服务BS为所请求的信道分配频率，并向SS发送具有频率分配信息的分配消息。 服务BS根据频率分配信息向目标BS发送信道分配请求消息。 在接收到信道分配请求消息后，目标BS向SS分配安全信道频率。

    Method and apparatus for calculating log-likelihood ratio for decoding in a receiver for a mobile communication system
    6.
    发明授权
    Method and apparatus for calculating log-likelihood ratio for decoding in a receiver for a mobile communication system 有权
    用于计算用于移动通信系统的接收机中的解码的对数似然比的方法和装置

    公开(公告)号：US07483497B2

    公开(公告)日：2009-01-27

    申请号：US11212928

    申请日：2005-08-29

    申请人： Jeong-Tae Oh ,  Jae-Hyok Lee ,  Ji-Ho Jang ,  Jae-Ho Jeon ,  Seung-Joo Maeng

    发明人： Jeong-Tae Oh ,  Jae-Hyok Lee ,  Ji-Ho Jang ,  Jae-Ho Jeon ,  Seung-Joo Maeng

    IPC分类号： H04L27/22

    CPC分类号： H04L27/38 ,  H04L1/005 ,  H04L25/067

    摘要： A method and apparatus are provided for calculating a log-likelihood ratio (LLR) for decoding in a receiver for a mobile communication system, wherein the method and apparatus determine selection bits for distinguishing four quadrants in a constellation representing signal points of transmission symbols, determine domain bits for distinguishing the signal points in each domain of the four quadrants according to a modulation order of the transmission symbols, repeat an operation of dividing a received signal into a real component and an imaginary component according to the number of determined domain bits, calculate and origin-shift absolute values of the real component and the imaginary component, and calculate LLRs for the selection bits. Further, the method and apparatus can subsequently calculate LLRs for corresponding domain bits each time the origin-shifted received signal is received.

    摘要翻译： 提供一种用于计算用于移动通信系统的接收机中的解码的对数似然比（LLR）的方法和装置，其中所述方法和装置确定用于区分表示传输符号的信号点的星座中的四个象限的选择位，确定 用于根据传输符号的调制顺序区分四个象限的每个域中的信号点的域比特，根据确定的域比特的数量重复将接收信号划分为实数分量和虚分量的操作，计算 和原始分量和虚分量的原点偏移绝对值，并计算选择位的LLR。 此外，该方法和装置可以随后在每次接收到原点移位的接收信号时计算相应的域比特的LLR。

    UPLINK (UL) POWER CONTROL APPARATUS AND METHOD IN BROADBAND WIRELESS COMMUNICATION SYSTEM
    8.
    发明申请
    UPLINK (UL) POWER CONTROL APPARATUS AND METHOD IN BROADBAND WIRELESS COMMUNICATION SYSTEM 有权
    UPLINK（UL）功率控制装置和方法在宽带无线通信系统中

    公开(公告)号：US20100331036A1

    公开(公告)日：2010-12-30

    申请号：US12816937

    申请日：2010-06-16

    申请人： Hwa-Sun YOU ,  Ji-Ho Jang ,  Jae-Ho Jeon ,  Seung-Joo Maeng

    发明人： Hwa-Sun YOU ,  Ji-Ho Jang ,  Jae-Ho Jeon ,  Seung-Joo Maeng

    IPC分类号： H04B7/005

    CPC分类号： H04W52/10 ,  H04W52/08 ,  H04W52/146 ,  H04W52/228

    摘要： An uplink (UL) power control apparatus and method in a broadband wireless communication system are provided. The Mobile Station (MS) includes a power controller for calculating a power compensation value using a last transmit power in a previous closed loop power control when a power control mode is changed to an open loop power control, and determining a transmit power according to the open loop power control using the power compensation value; and a transmitter for adjusting and transmitting the transmit power of a UL signal under control of the power controller.

    摘要翻译： 提供了宽带无线通信系统中的上行（UL）功率控制装置和方法。 移动站（MS）包括功率控制器，用于当功率控制模式改变为开环功率控制时，使用先前闭环功率控制中的最后发射功率来计算功率补偿值，并且根据 开环功率控制采用功率补偿值; 以及发射机，用于在功率控制器的控制下调整和发送UL信号的发射功率。

    Handover method and system in a broadband wireless access communication system
    9.
    发明申请
    Handover method and system in a broadband wireless access communication system 有权
    宽带无线接入通信系统中的切换方式和系统

    公开(公告)号：US20060135164A1

    公开(公告)日：2006-06-22

    申请号：US11273203

    申请日：2005-11-14

    申请人： Jeong-Heon Kim ,  Young-Ky Kim ,  Jae-Ho Jeon ,  Seung-Joo Maeng ,  Ji-Ho Jang

    发明人： Jeong-Heon Kim ,  Young-Ky Kim ,  Jae-Ho Jeon ,  Seung-Joo Maeng ,  Ji-Ho Jang

    IPC分类号： H04Q7/20

    CPC分类号： H04W72/048 ,  H04W16/10 ,  H04W36/20 ,  H04W72/0453

    摘要： Disclosed is a hard handover method and system for use in a Broadband Wireless Access (BWA) communication system. The method and system includes dividing a data transmission field for mobile stations (MSs) into a handover field and a normal user field, allocating at least one subchannel in the normal user field to non-handover MSs located in a non-handover region, allocating at least one subchannel in the handover field to handover MSs located in a handover region, and performing communication through the allocated at least one subchannel.

    摘要翻译： 公开了一种在宽带无线接入（BWA）通信系统中使用的硬切换方法和系统。 所述方法和系统包括将移动台（MS）的数据传输区划分为切换区和普通用户区，在正常用户区中分配至少一个子信道到位于非切换区域的非切换MS，分配 切换字段中的至少一个子信道切换位于切换区域中的MS，以及通过所分配的至少一个子信道执行通信。

    Uplink (UL) power control apparatus and method in broadband wireless communication system
    10.
    发明授权
    Uplink (UL) power control apparatus and method in broadband wireless communication system 有权
    上行（UL）功率控制装置和方法在宽带无线通信系统中

    公开(公告)号：US07885678B2

    公开(公告)日：2011-02-08

    申请号：US11803119

    申请日：2007-05-11

    申请人： Hwa-Sun You ,  Ji-Ho Jang ,  Jae-Ho Jeon ,  Seung-Joo Maeng

    发明人： Hwa-Sun You ,  Ji-Ho Jang ,  Jae-Ho Jeon ,  Seung-Joo Maeng

    IPC分类号： H04B7/00

    CPC分类号： H04W52/10 ,  H04W52/08 ,  H04W52/146 ,  H04W52/228

    摘要： An uplink (UL) power control apparatus and method in a broadband wireless communication system are provided. The Mobile Station (MS) includes a power controller for calculating a power compensation value using a last transmit power in a previous closed loop power control when a power control mode is changed to an open loop power control, and determining a transmit power according to the open loop power control using the power compensation value; and a transmitter for adjusting and transmitting the transmit power of a UL signal under control of the power controller.

    摘要翻译： 提供了宽带无线通信系统中的上行（UL）功率控制装置和方法。 移动站（MS）包括功率控制器，用于当功率控制模式改变为开环功率控制时，使用先前闭环功率控制中的最后发射功率来计算功率补偿值，并且根据 开环功率控制采用功率补偿值; 以及发射机，用于在功率控制器的控制下调整和发送UL信号的发射功率。