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172 条记录 (耗时 0.027 秒)

    Method for Seamless Inter-Frequency Hard Handover in Radio Communication System
    31.
    发明申请
    Method for Seamless Inter-Frequency Hard Handover in Radio Communication System 审中-公开
    无线通信系统中无缝频间硬切换的方法

    公开(公告)号：US20070129075A1

    公开(公告)日：2007-06-07

    申请号：US11459134

    申请日：2006-07-21

    申请人： Il-Gyu Kim ,  Seung-Chan Bang ,  Jae-Heung Kim ,  Chang-Joo Kim

    发明人： Il-Gyu Kim ,  Seung-Chan Bang ,  Jae-Heung Kim ,  Chang-Joo Kim

    IPC分类号： H04Q7/20

    CPC分类号： H04W36/0055 ,  H04W56/00

    摘要： A method for seamless inter-frequency hard handover in a radio communication system is disclosed. The method for seamless inter-frequency hard handover includes the steps of: a) at a mobile station, blocking a first uplink carrier frequency used for communication, transmitting a direct sequence spread preamble signal through a second uplink carrier frequency for a short time, and continuously performing the communication through the first uplink carrier frequency; and b) at a target base transceiver station, acquiring an uplink synchronization of a mobile station based on the preamble before performing handover.

    摘要翻译： 公开了一种无线通信系统中无缝频间硬切换的方法。 用于无缝频间硬切换的方法包括以下步骤：a）在移动台处阻塞用于通信的第一上行链路载波频率，通过第二上行链路载波频率短时间发送直接序列扩展前导信号;以及 通过第一上行链路载波频率连续执行通信; 以及b）在目标基站收发台，在执行切换之前基于前导码获取移动台的上行同步。

    Mobile termile capable of efficiently measuring CNIR and CNIR measuring method thereof
    32.
    发明申请
    Mobile termile capable of efficiently measuring CNIR and CNIR measuring method thereof 失效
    能够有效测量CNIR和CNIR测量方法的移动终端

    公开(公告)号：US20060133260A1

    公开(公告)日：2006-06-22

    申请号：US11233996

    申请日：2005-09-22

    申请人： Young-Hoon Kim ,  Seung-Chan Bang

    发明人： Young-Hoon Kim ,  Seung-Chan Bang

    IPC分类号： H04J11/00 ,  H04J1/00

    CPC分类号： H04W52/42 ,  H04B17/336 ,  H04L27/2656 ,  H04L27/2657 ,  H04L2025/03414

    摘要： The present invention relates to a mobile terminal for efficiently measuring a carrier to noise and interference ratio (CNIR) in an orthogonal frequency division multiplexing (OFDM) mobile communication system and a CNIR method thereof. The mobile terminal includes a frequency offset and frame detector for detecting frame timing information and frequency offset from a received signal, a demodulator for demodulating the received signal by using the detected frame timing information and frequency offset, a subchannel separator for separating a data symbol from symbols outputted by the demodulator, a channel estimating and equalizing unit for estimating and equalizing a channel for the corresponding subchannel from the data symbol, and a CNIR measuring unit for transmitting a measured current CNIR to the base station.

    摘要翻译： 本发明涉及一种用于在正交频分复用（OFDM）移动通信系统及其CNIR方法中有效测量载波与噪声和干扰比（CNIR）的移动终端。 移动终端包括用于从接收到的信号检测帧定时信息和频率偏移的频率偏移和帧检测器，用于通过使用检测到的帧定时信息和频率偏移来解调接收信号的解调器，用于将数据符号从 由解调器输出的符号，用于从数据符号估计和均衡相应子信道的信道的信道估计和均衡单元，以及用于将测量的当前CNIR发送到基站的CNIR测量单元。

    Orthogonal complex spreading method for multichannel and apparatus thereof
    33.
    发明授权
    Orthogonal complex spreading method for multichannel and apparatus thereof 有权
    用于多通道的正交复扩展方法及其装置

    公开(公告)号：US06449306B1

    公开(公告)日：2002-09-10

    申请号：US09767953

    申请日：2001-03-27

    申请人： Seung Chan Bang ,  Jae Ryong Shim ,  Ki Chul Han ,  Jung Im Kim ,  Tae Joong Kim

    发明人： Seung Chan Bang ,  Jae Ryong Shim ,  Ki Chul Han ,  Jung Im Kim ,  Tae Joong Kim

    IPC分类号： H04B1500

    CPC分类号： H04B1/7097 ,  H04J13/0048 ,  H04J13/102 ,  H04J2013/0037

    摘要： An orthogonal complex spreading method for a multichannel and an apparatus thereof are disclosed. The method includes the steps of complex-summing &agr;n1WM,n1Xn1 which is obtained by multiplying an orthogonal Hadamard sequence WM,n1 by a first data Xn1 of a n-th block and &agr;n2WM,n2Xn2 which is obtained by multiplying an orthogonal Hadamard sequence W1,n2 by a second data Xn2 of a n-th block; complex-multiplying &agr;n1WM,n1Xn1+j&agr;n2WM,n2Xn2 which is summed in the complex type and WM,n3+jPWM,n4 of the complex type using a complex multiplier and outputting as an in-phase information and quadrature phase information; and summing only in-phase information outputted from a plurality of blocks and only quadrature phase information outputted therefrom and spreading the same using a spreading code.

    摘要翻译： 公开了一种用于多通道的正交复扩展方法及其装置。 该方法包括以下步骤：通过将正交哈达玛序列WM，n1乘以第n个块的第一数据Xn1和通过将正交哈达马项序列W1乘以的alphan2WM，n2Xn2获得的alphan1WM，n1Xn1， n2由第n个块的第二数据Xn2; 使用复数乘法器将复数类型和WM，n3 + jPWM，n4相加的复乘乘法器1WM，n1Xn1 + jalphan2WM，n2Xn2并且输出为同相信息和正交相位信息; 并且仅从多个块输出的同相信息和仅输出的正交相位信息相加，并使用扩展码进行扩展。

    Cell search method, forward link frame transmission method, apparatus using the same and forward link frame structure
    38.
    发明授权
    Cell search method, forward link frame transmission method, apparatus using the same and forward link frame structure 有权
    小区搜索方法，前向链路帧传输方法，使用相同和前向链路帧结构的装置

    公开(公告)号：US08542571B2

    公开(公告)日：2013-09-24

    申请号：US12093284

    申请日：2006-11-10

    申请人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Nam-Il Kim ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang

    发明人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Nam-Il Kim ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang

    IPC分类号： H04L27/30

    CPC分类号： H04L25/03866 ,  H04J11/0069 ,  H04L27/2656 ,  H04L27/2657

    摘要： Provided are a cell search method, a forward link frame transmission method, an apparatus using the methods, and a forward link frame structure. The cell search apparatus includes a sync acquirer acquiring synchronization of sync channel symbols using a sync channel of a forward link, and a group detector detecting at least one hopping codeword element belonging to a hopping codeword of a target cell from a forward link signal containing sync channel symbols sequence-hopped using a hopping codeword corresponding to a code group to which a scrambling code of each cell belongs based on the acquired synchronization, and detecting a code group of the target cell based on the detected hopping codeword element, wherein the hopping codewords are orthogonal to a cyclic shift operation. Accordingly, a cell search time and the complexity of the cell search can be reduced.

    摘要翻译： 提供了小区搜索方法，前向链路帧发送方法，使用该方法的装置和前向链路帧结构。 小区搜索装置包括使用前向链路的同步信道获取同步信道符号的同步的同步获取器，以及从包含同步的前向链路信号检测属于目标小区的跳频码字的至少一个跳频码字元素的组检测器 基于所获取的同步，使用与每个小区的扰码对应的码组对应的跳频码字进行序列跳频，基于检测到的跳频码字元素检测目标小区的码组，其中跳频码字 与循环移位操作正交。 因此，可以减少小区搜索时间和小区搜索的复杂度。