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    Method and apparatus for allocating channels in an orthogonal frequency division multiple access system
    21.
    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 generating preamble sequence for adaptive antenna system in orthogonal frequency division multiple access communication system
    22.
    发明授权
    Method and apparatus for generating preamble sequence for adaptive antenna system in orthogonal frequency division multiple access communication system 有权
    用于在正交频分多址通信系统中生成用于自适应天线系统的前导码序列的方法和装置

    公开(公告)号：US07567639B2

    公开(公告)日：2009-07-28

    申请号：US11116904

    申请日：2005-04-28

    申请人： Hoon Huh ,  Jang-Hoon Yang ,  Jae-Ho Jeon ,  Soon-Young Yoon ,  Seung-Joo Maeng ,  Jae-Hee Cho ,  In-Seok Hwang ,  Jee-Hyun Kim ,  Kwan-Hee Roh

    发明人： Hoon Huh ,  Jang-Hoon Yang ,  Jae-Ho Jeon ,  Soon-Young Yoon ,  Seung-Joo Maeng ,  Jae-Hee Cho ,  In-Seok Hwang ,  Jee-Hyun Kim ,  Kwan-Hee Roh

    IPC分类号： H04L7/00

    CPC分类号： H04L25/022 ,  H04L25/0226 ,  H04L27/2613

    摘要： Disclosed is a method and an apparatus for generating a preamble sequence for an adaptive antenna system supporting a space division multiple access in an OFDMA communication system. Particularly, disclosed is a method for forming a preamble sequence identifying each of a plurality of mobile subscriber stations located within a cell or a sector of a communication system which includes a plurality of sub-channels assigned to the mobile subscriber stations, each of the sub-channels including a plurality of bins each of which includes n number of contiguous subcarriers in a frequency domain, the preamble sequence being transmitted before each of the sub-channels is transmitted, the method including the step of generating a preamble sequence by phase-shifting a predetermined sequence according to a predetermined phase shift sequence in the frequency domain.

    摘要翻译： 公开了一种用于在OFDMA通信系统中生成支持空分多址的自适应天线系统的前同步码序列的方法和装置。 特别地，公开了一种用于形成标识位于通信系统的小区或扇区内的多个移动用户站中的每一个的前导序列的方法，该通信系统包括分配给移动用户站的多个子信道，每个子 - 信道，包括多个信道，每个信道包括频域中的n个连续子载波，所述前导序列在每个子信道被发送之前被发送，所述方法包括以下步骤：通过相移产生前同步码序列 根据频域中的预定相移序列的预定序列。

    Apparatus and method for detecting user in a communication system
    23.
    发明申请
    Apparatus and method for detecting user in a communication system 有权
    用于在通信系统中检测用户的装置和方法

    公开(公告)号：US20070002959A1

    公开(公告)日：2007-01-04

    申请号：US11477040

    申请日：2006-06-28

    申请人： Jae-Hyok Lee ,  Evgeny Gontcharov ,  Jae-Ho Jeon ,  Seung-Joo Maeng

    发明人： Jae-Hyok Lee ,  Evgeny Gontcharov ,  Jae-Ho Jeon ,  Seung-Joo Maeng

    IPC分类号： H04K1/10

    CPC分类号： H04L5/023 ,  H04L27/2608

    摘要： Disclosed is a method for detecting a user in a communication system. The method includes selecting i ranging sub-carrier signals among k sub-carrier signals upon which a k-point fast Fourier transform (FFT), has been performed multiplying the i ranging sub-carrier signals by a ranging code, performing k-point inverse fast Fourier transform (IFFT) on the i ranging sub-carrier signals multiplied by the ranging code, and (k-i) 0s, detecting a power of each of the IFFT-processed k point signals, estimating a power of a desired received signal and a power of an interference signal by using powers of the k point signals according to a predetermined scheme, and detecting a user depending on the power of the desired received signal and the power of the interference signal.

    摘要翻译： 公开了一种用于在通信系统中检测用户的方法。 该方法包括：在已经执行了k点快速傅立叶变换（FFT）的k个子载波信号中选择i个测距子载波信号，其中i个测距子载波信号乘以测距码，执行k点反相 在i测距子载波信号乘以测距码和（ki）0s的快速傅里叶变换（IFFT）中，检测每个IFFT处理的k点信号的功率，估计所需接收信号的功率和 通过使用根据预定方案的k点信号的功率的干扰信号的功率，以及根据期望的接收信号的功率和干扰信号的功率来检测用户。

    Handover method and system in a broadband wireless access communication system
    26.
    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。

    System for soft handover in MIMO OFDMA mobile communication system and method thereof
    27.
    发明申请
    System for soft handover in MIMO OFDMA mobile communication system and method thereof 审中-公开
    MIMO OFDMA移动通信系统中的软切换系统及其方法

    公开(公告)号：US20050281228A1

    公开(公告)日：2005-12-22

    申请号：US11158861

    申请日：2005-06-22

    申请人： Jeong-Tae Oh ,  Won-II Roh ,  Kyun-Byoung Ko ,  Jae-Ho Jeon ,  Seung-Joo Maeng ,  Pan-Yuh Joo ,  Hong-Sil Jeong ,  Sung-Ryul Yun ,  Chan-Byoung Chae

    发明人： Jeong-Tae Oh ,  Won-II Roh ,  Kyun-Byoung Ko ,  Jae-Ho Jeon ,  Seung-Joo Maeng ,  Pan-Yuh Joo ,  Hong-Sil Jeong ,  Sung-Ryul Yun ,  Chan-Byoung Chae

    IPC分类号： H04B7/26 ,  H04B7/04 ,  H04B14/00 ,  H04L27/26 ,  H04W36/18 ,  H04Q7/20

    CPC分类号： H04W36/18

    摘要： Disclosed is a method for performing a soft handover in a Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiple Access (OFDMA) mobile communication system including a mobile station (MS), a serving base station (BS) and a plurality of neighbor BSs, each neighbor BS being different from the serving BS the serving BS providing a service to the MS. According to the method, the MS requests a soft handover to the serving BS when the serving BS detects that the MS must be handed over to one of the neighbor BSs, the serving BS notifies the neighbor BSs of the soft handover of the MS in response to the request for the soft handover, transmits signals to the MS using a predetermined coding scheme and a predetermined frequency region allocation scheme, and the neighbor BSs transmit signals to the MS using the predetermined coding scheme and the predetermined frequency region allocation scheme.

    摘要翻译： 公开了一种在多输入多输出（MIMO）正交频分多址（MIMO）正交频分多址（OFDMA）移动通信系统中执行软切换的方法，包括移动台（MS），服务基站（BS）和多个相邻BS ，每个邻居BS不同于服务BS，服务BS向MS提供服务。 根据该方法，当服务BS检测到MS必须切换到相邻BS之一时，MS向服务BS请求软切换，服务BS响应该MS向MS通知软切换 对于软切换的请求，使用预定的编码方案和预定的频率区域分配方案向MS发送信号，并且相邻BS使用预定的编码方案和预定的频率区域分配方案向MS发送信号。

    Method and apparatus for allocating channels in an orthogonal frequency division multiple access system
    28.
    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。