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    Apparatus and method for estimating carrier-to-interference and noise ratio in a broadband wireless communication system
    81.
    发明授权
    Apparatus and method for estimating carrier-to-interference and noise ratio in a broadband wireless communication system 有权
    用于估计宽带无线通信系统中的载波与干扰和噪声比的装置和方法

    公开(公告)号：US07760800B2

    公开(公告)日：2010-07-20

    申请号：US11699218

    申请日：2007-01-29

    申请人： Joon-Young Bae ,  Ha-Young Yang ,  Seung-Joo Maeng

    发明人： Joon-Young Bae ,  Ha-Young Yang ,  Seung-Joo Maeng

    IPC分类号： H03H7/30

    CPC分类号： H04L27/2647 ,  H04L1/206 ,  H04L27/2602

    摘要： An apparatus and method for estimating the CINR of an uplink channel in a broadband wireless communication system are provided, in which tiles being subcarrier sets are separated from a feedback signal received on the uplink channel. All symbols included in the tiles of the feedback signal are correlated with each of codewords, the absolute values of the correlations are squared for the each codeword and summed, a codeword with a maximum sum from among the codewords is selected. Received power level and noise power level are calculated using all the symbols included in the tiles of the feedback signal correlated with the codeword with the maximum sum, and the CINR of the uplink channel is estimated using the received power and the noise power levels.

    摘要翻译： 提供一种用于估计宽带无线通信系统中的上行链路信道的CINR的装置和方法，其中作为副载波集的瓦片与在上行链路信道上接收的反馈信号分离。 包括在反馈信号的瓦片中的所有符号与每个码字相关联，相关性的绝对值对于每个码字进行平方并且相加，选择具有来自码字中的最大和的码字。 使用包含在与具有最大和的码字相关的反馈信号的瓦片中的所有符号来计算接收功率电平和噪声功率电平，并且使用接收功率和噪声功率电平来估计上行链路信道的CINR。

    Method and apparatus for generating preambles in a broadband wireless communication system using multiple antennas
    83.
    发明授权
    Method and apparatus for generating preambles in a broadband wireless communication system using multiple antennas 有权
    在使用多个天线的宽带无线通信系统中产生前同步码的方法和装置

    公开(公告)号：US07394793B2

    公开(公告)日：2008-07-01

    申请号：US11077853

    申请日：2005-03-11

    申请人： Won-Il Roh ,  Jae-Ho Jeon ,  Soon-Young Yoon ,  Seung-Joo Maeng

    发明人： Won-Il Roh ,  Jae-Ho Jeon ,  Soon-Young Yoon ,  Seung-Joo Maeng

    IPC分类号： H04B7/216

    CPC分类号： H04L5/0048 ,  H04J13/0003 ,  H04J13/0048 ,  H04J13/18 ,  H04L5/0026 ,  H04L27/2613

    摘要： A preamble generation method and apparatus are provided for improving transmit diversity by changing a preamble structure in a broadband wireless communication system using multiple antennas based on a multiple input multiple output (MIMO) scheme. First pilot tones associated with different antennas are selected. The first pilot tones are multiplied by different first Walsh codes. Second pilot tones associated with the same antenna are sequentially selected along a frequency axis. The second pilot tones are multiplied by a second Walsh code. Preambles are generated by assigning, to at least two symbol durations, output signals multiplied by the first and second Walsh codes. Consecutive pilot tones during each of the at least two symbol durations are spaced by one pilot tone, and code streams of the first and second Walsh codes are alternately multiplied by the pilot tones. The preamble structure has orthogonality between the antennas using frequency, time and code domains.

    摘要翻译： 提供了一种前导码生成方法和装置，用于通过基于多输入多输出（MIMO）方案通过使用多个天线改变宽带无线通信系统中的前导码结构来改善发送分集。 选择与不同天线相关联的第一导频音调。 第一导频音乘以不同的第一沃尔什码。 沿着频率轴依次选择与相同天线相关联的第二导频音。 第二个导频音乘以第二个沃尔什码。 通过将至少两个符号持续时间分配给乘以第一和第二沃尔什码的输出信号来产生前导码。 在至少两个符号持续时间中的每一个期间的连续导频音调间隔一个导频音，并且第一和第二沃尔什码的码流交替地乘以导频音。 前导码结构在使用频率，时间和码域的天线之间具有正交性。

    Apparatus and method for estimating a velocity of a mobile station in a mobile communication system
    84.
    发明授权
    Apparatus and method for estimating a velocity of a mobile station in a mobile communication system 有权
    用于估计移动通信系统中的移动台的速度的装置和方法

    公开(公告)号：US07369876B2

    公开(公告)日：2008-05-06

    申请号：US10795982

    申请日：2004-03-10

    申请人： Ji-Ha Lee ,  Seung-Hyeon Nahm ,  Seung-Joo Maeng ,  Sung-Kwon Jo

    发明人： Ji-Ha Lee ,  Seung-Hyeon Nahm ,  Seung-Joo Maeng ,  Sung-Kwon Jo

    IPC分类号： H04B1/38

    CPC分类号： G01P3/50 ,  G01S11/10 ,  H04L25/022

    摘要： A base station apparatus and method for estimating a velocity of a mobile station in a mobile communication system are provided. In the apparatus and 9 method, a channel estimator receives a signal on a radio channel from the mobile station and performs channel estimation using the received signal. A velocity estimator detects a power spectrum value of the channel estimator, and provides the channel estimator with a channel estimation coefficient for use during channel estimation according to a Doppler shift frequency value of power estimated from the mobile station when the velocity of the mobile station is unchanged.

    摘要翻译： 提供了一种用于在移动通信系统中估计移动台的速度的基站装置和方法。 在装置和方法9中，信道估计器从移动台接收无线信道上的信号，并使用接收到的信号进行信道估计。 速度估计器检测信道估计器的功率谱值，并且在信道估计中提供信道估计系数，以在信道估计期间根据从移动站估计的功率的多普勒频移值，当移动台的速度为 不变

    Power control apparatus and method in a wireless communication system using scheduled packet data service channel
    85.
    发明授权
    Power control apparatus and method in a wireless communication system using scheduled packet data service channel 有权
    一种使用调度分组数据业务信道的无线通信系统中的功率控制装置和方法

    公开(公告)号：US07349714B2

    公开(公告)日：2008-03-25

    申请号：US10919897

    申请日：2004-08-17

    申请人： Sung-Won Lee ,  Soon-Young Yoon ,  Seung-Joo Maeng ,  Woo-June Kim ,  Hong-Seong Chang ,  Hoon Chang

    发明人： Sung-Won Lee ,  Soon-Young Yoon ,  Seung-Joo Maeng ,  Woo-June Kim ,  Hong-Seong Chang ,  Hoon Chang

    IPC分类号： H04M1/00

    CPC分类号： H04W52/40 ,  H04W52/12 ,  H04W52/44

    摘要： Disclosed is a method for handing-off a mobile station receiving packet data over a second channel from a first base station system (BSS) to a second BSS by a base station controller (BSC) in a system in which the mobile station communicates with the first BSS and the second BSS adjacent to the first BSS through a first channel for transmitting a control message, and the mobile station communicates with the first BSS through the second channel for transmitting the packet data. In the method, the mobile station measures receiving strengths of pilot channels transmitted from the first BSS and the second BSS, and transmits the measured receiving strengths to the BSC through the first BSS and the second BSS. The first and second BSSs each calculate available transmission power allocable to the second channel and transmits the calculated available transmission power to the BSC. The BSC calculates a sum of the available transmission power and the measured receiving strength of the pilot channel from the first BSS and a sum of the available transmission power and the measured receiving strength of the pilot channel from the second BSS. The BSC transmits a handoff indication message to the second BSS, when the sum of the available transmission power and the measured receiving strength of the pilot channel from the second BSS is higher than the sum of the available transmission power and the measured receiving strength of the pilot channel from the first BSS.

    摘要翻译： 本发明公开了一种移动台通过基站控制器（BSC）在第二信道上从第一基站系统（BSS）向第二BSS接收分组数据的移动台的方法，所述系统中移动台与 第一BSS和通过用于发送控制消息的第一信道与第一BSS相邻的第二BSS，并且移动台通过第二信道与第一BSS进行通信，用于发送分组数据。 在该方法中，移动站测量从第一BSS和第二BSS发送的导频信道的接收强度，并通过第一BSS和第二BSS将测量的接收强度发送给BSC。 第一和第二BSS各自计算可分配给第二信道的可用传输功率，并将所计算的可用传输功率发送给BSC。 BSC计算来自第一BSS的可用发射功率和测量的导频信道的接收强度的总和以及来自第二BSS的导频信道的可用传输功率和测量的接收强度之和。 BSC向第二BSS发送切换指示消息，当可用发射功率和来自第二BSS的导频信道的测量接收强度的总和高于可用发射功率和测量的接收强度之和时 来自第一BSS的导频信道。

    Apparatus and method for supporting soft handover in broadband wireless access communication system
    88.
    发明申请
    Apparatus and method for supporting soft handover in broadband wireless access communication system 审中-公开
    在宽带无线接入通信系统中支持软切换的装置和方法

    公开(公告)号：US20050288027A1

    公开(公告)日：2005-12-29

    申请号：US11153816

    申请日：2005-06-15

    申请人： Jae-Weon Cho ,  Pan-Yuh Joo ,  Sie-Joon Cho ,  Chi-Woo Lim ,  Young-Bin Chang ,  Seung-Joo Maeng ,  Jae-Hee Cho

    发明人： Jae-Weon Cho ,  Pan-Yuh Joo ,  Sie-Joon Cho ,  Chi-Woo Lim ,  Young-Bin Chang ,  Seung-Joo Maeng ,  Jae-Hee Cho

    IPC分类号： H04B7/26 ,  H04W36/18 ,  H04Q7/20

    CPC分类号： H04W36/18

    摘要： A method for supporting a handover in a broadband wireless access communication system including an MSS, a serving BS providing service to the MSS, and a plurality of neighbor base stations, in which each of the BSs includes cells using different sub-channel bands. The method includes: measuring, by the BSS, intensities of signals received from the BSs, transmitting to the serving BS a request for a handover based on the measured signal intensities, establishing a connection with a target BS, to which a handover of the MSS is requested, from among the neighbor BSs before terminating a connection with the serving BS, and performing a soft handover by establishing a simultaneous connection with the two BSs in a handover area. The serving BS and the target BS allocate the same sub-channel including the same sub-carriers to the MSS when the mobile subscriber station performs the soft handover.

    摘要翻译： 一种用于支持宽带无线接入通信系统中的切换的方法，所述宽带无线接入通信系统包括MSS，向MSS提供服务的服务BS以及多个相邻基站，其中每个BS包括使用不同子信道频带的小区。 该方法包括：通过BSS测量从BS接收的信号的强度，基于测量的信号强度向服务BS发送对切换的请求，建立与目标BS的连接，MSS的切换 在终止与服务BS的连接之前从相邻BS中请求，并且通过在切换区域中建立与两个BS的同时连接来执行软切换。 当移动用户站执行软切换时，服务BS和目标BS向MSS分配包括相同子载波的相同子信道。