公开(公告)号：US20090213807A1

公开(公告)日：2009-08-27

申请号：US12380230

申请日：2009-02-25

申请人： Hee-Kwang Lee ,  Seung-Joo Maeng ,  Jae-Ho Jeon

发明人： Hee-Kwang Lee ,  Seung-Joo Maeng ,  Jae-Ho Jeon

IPC分类号： H04W72/04 ,  H04B7/02

CPC分类号： H04L5/0037 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0058 ,  H04W52/38 ,  H04W72/04 ,  H04W72/10

摘要： A method of allocating bursts in a broadband wireless communication system is provided. The method includes dividing a downlink period into a plurality of regions according to a burst property, calculating a residual symbol axis size and a residual subchannel axis size of a first region conforming to two-dimensional allocation among the plurality of regions, allocating bursts to be allocated to the first region in a descending order, wherein the bursts are respectively allocated in a rectangular shape having a length corresponding to the number of residual symbols along a time axis or in a rectangular shape having a length corresponding to the number of residual subchannels along a frequency axis, and allocating bursts to be allocated to at least one region conforming to one-dimensional allocation among the plurality of regions to the at least one region conforming to one-dimensional allocation according to a scheduling priority.

摘要翻译： 提供了一种在宽带无线通信系统中分配突发的方法。 该方法包括根据突发特性将下行链路周期划分为多个区域，计算在多个区域之间符合二维分配的第一区域的残余符号轴大小和剩余子信道轴尺寸，将突发分配为 分配给第一区域，其中突发分别被分配成具有与沿着时间轴的残余符号的数量相对应的长度的矩形形状或者具有对应于沿着剩余子信道数量的长度的矩形形状 频率轴，并且根据调度优先级，将符合一维分配的至少一个区域的突发分配给符合一维分配的至少一个区域。

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。

公开(公告)号：US07130639B2

公开(公告)日：2006-10-31

申请号：US10317487

申请日：2002-12-12

申请人： Dong-Jun Lee ,  Jae-Ho Jeon ,  Ji-Won Lee ,  Sung-Kwon Jo ,  Seung-Joo Maeng ,  Sung-Won Lee ,  Sang-Hyun Yang

发明人： Dong-Jun Lee ,  Jae-Ho Jeon ,  Ji-Won Lee ,  Sung-Kwon Jo ,  Seung-Joo Maeng ,  Sung-Won Lee ,  Sang-Hyun Yang

IPC分类号： H04Q7/20

CPC分类号： H04L47/762 ,  H04L1/0006 ,  H04L47/10 ,  H04L47/14 ,  H04L47/2408 ,  H04L47/2416 ,  H04L47/26 ,  H04L47/70 ,  H04L47/746 ,  H04L47/801 ,  H04L47/805 ,  H04L47/824 ,  H04W28/24

摘要： A TDM (Time Division Multiplexing)-based mobile communication system that switches a service type according to QoS (Quality of Service). The mobile communication system includes a base transceiver system (BTS) and a mobile station (MS) connected to the BTS. The BTS monitors whether a first service provided from the BTS to the MS is satisfied according to whether at least as much data as a predetermined transmission amount is transmitted to the MS. If the first service is dissatisfied, the BTS switches a service to a second service lower in QoS than the first service so that as much data as a transmission amount smaller than the predetermined transmission amount is transmitted to the MS.

公开(公告)号：US20060203711A1

公开(公告)日：2006-09-14

申请号：US11369723

申请日：2006-03-07

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

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

IPC分类号： H04J11/00

CPC分类号： H04L1/0668 ,  H04L5/0023 ,  H04L5/0046 ,  H04L5/0048

摘要： A method of mapping Space-Time Coding (STC) data to subcarriers in a broadband wireless communication system using multiple antennas is provided. Transmission symbols are encoded according to a predetermined space-time coding matrix and the coded data symbols are mapped to time-space-subcarriers according to a mapping rule determined by the space-time coding matrix.

摘要翻译： 提供了一种使用多个天线在宽带无线通信系统中将空时编码（STC）数据映射到子载波的方法。 传输符号根据预定的空时编码矩阵进行编码，编码后的数据符号根据由时空编码矩阵确定的映射规则映射到时空子载波。

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。

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。

公开(公告)号：US06963601B1

公开(公告)日：2005-11-08

申请号：US09497743

申请日：2000-02-04

申请人： Jae-Yoel Kim ,  Seung-Joo Maeng ,  Jae-Min Ahn ,  Hae-Won Kang

发明人： Jae-Yoel Kim ,  Seung-Joo Maeng ,  Jae-Min Ahn ,  Hae-Won Kang

IPC分类号： H04J13/00 ,  H04B1/707 ,  H04B7/06 ,  H04B7/216 ,  H04B7/26 ,  H04J11/00 ,  H04J13/10 ,  H04J13/16 ,  H04L27/26 ,  H04W16/28 ,  H04W88/02 ,  H04B1/69

CPC分类号： H04B7/0613 ,  H04B1/707 ,  H04J13/0022 ,  H04J13/10

摘要： A channel spreading method in a CDMA communication system which spreads a pair of symbols obtained by repeating one symbol with a quasi-orthogonal code having a given length to transmit the spread symbols through a first antenna and spreads said symbol and an inverted symbol of said symbol with said quasi-orthogonal code to transmit the spread symbols through a second antenna. The method comprises spreading one of said pair of symbols with a portion of said quasi-orthogonal code and spreading another symbol of said pair of symbols with a remaining portion of said quasi-orthogonal code; and spreading said symbol with a portion of said quasi-orthogonal code and spreading said inverted symbol with the remaining portion of said quasi-orthogonal code.

摘要翻译： CDMA通信系统中的信道扩展方法，其扩展通过用具有给定长度的准正交码重复一个符号而获得的一对符号，以便通过第一天线发送扩展符号，并扩展所述符号和所述符号的反相符号 利用所述准正交码通过第二天线发送扩展符号。 所述方法包括用所述准正交码的一部分扩展所述一对符号中的一个，并用所述准正交码的剩余部分扩展所述符号对中的另一符号; 以及用所述准正交码的一部分扩展所述符号，并用所述准正交码的剩余部分扩展所述反相符号。

公开(公告)号：US06937559B1

公开(公告)日：2005-08-30

申请号：US09503258

申请日：2000-02-14

申请人： Jae-Yoel Kim ,  Hee-Won Kang ,  Jae-Min Ahn ,  Seung-Joo Maeng

发明人： Jae-Yoel Kim ,  Hee-Won Kang ,  Jae-Min Ahn ,  Seung-Joo Maeng

IPC分类号： H04B1/707 ,  H04B7/216 ,  H04B7/26 ,  H04J11/00 ,  H04J13/18

CPC分类号： H04J13/0048 ,  H04B7/264 ,  H04B2201/70703 ,  H04J13/18

摘要： A channel spreading device for a CDMA communication system is disclosed. The channel spreading device includes; a storage medium for storing orthogonal code numbers which cannot maintain an orthogonality when an orthogonal code for a maximum data rate is used; a controller for determining whether the respective orthogonal code numbers stored in the storage medium are available at a given data rate, when at least one data user requests data transmission at the given data rate, and outputting the determined available orthogonal code numbers and control signals according to the determination result; a plurality of channel transmitters, provided in association with the orthogonal code numbers from the controller, for spreading data from the data user with an orthogonal code corresponding to the orthogonal code number from the controller; and a plurality of multipliers for multiplying outputs of the channel transmitters by control signals from the controller, a plurality of channel transmission circuits; a storage medium for storing orthogonal code numbers which cannot maintain an orthogonality when an orthogonal code for a maximum data rate is used; a controller for determining whether the respective orthogonal code numbers stored in the storage medium are available at a given data rate, when at least one data user requests data transmission at the given data rate, and outputting the determined available orthogonal code numbers and control signals according to the determination result.

摘要翻译： 公开了一种用于CDMA通信系统的信道扩展装置。 信道扩展装置包括： 用于存储当使用最大数据速率的正交码时不能维持正交性的正交码数的存储介质; 控制器，用于当至少一个数据用户以给定数据速率请求数据传输时，确定存储在存储介质中的各个正交码号是否以给定数据速率可用，并且根据给定数据速率输出所确定的可用正交码号和控制信号 确定结果; 与来自控制器的正交码号相关联地提供的多个信道发射机，用于利用来自控制器的与正交码数对应的正交码从数据用户扩展数据; 以及多个乘法器，用于通过来自控制器，多个信道传输电路的控制信号来使信道发射机的输出相乘; 用于存储当使用最大数据速率的正交码时不能维持正交性的正交码数的存储介质; 控制器，用于当至少一个数据用户以给定数据速率请求数据传输时，确定存储在存储介质中的各个正交码号是否以给定数据速率可用，并且根据给定数据速率输出所确定的可用正交码号和控制信号 确定结果。

公开(公告)号：US06707788B1

公开(公告)日：2004-03-16

申请号：US09456731

申请日：1999-12-08

申请人： Jae-Yoel Kim ,  Hee-Won Kang ,  Seung-Joo Maeng ,  Young-Ky Kim

发明人： Jae-Yoel Kim ,  Hee-Won Kang ,  Seung-Joo Maeng ,  Young-Ky Kim

IPC分类号： H04B1500

CPC分类号： H04J13/00 ,  H04B1/707 ,  H04J13/0022 ,  H04J13/10

摘要： A demodulation method in a mobile station having a plurality of channels, for receiving a signal from a base station. In one aspect, the base station has a plurality of channels, a BPSK spreader for orthogonally spreading symbol data of each channel with an assigned orthogonal code, and a QPSK spreader for PN-spreading the orthogonally spread signal with a PN code. In the demodulation method, a first QPSK despreader in the mobile station receives PN-spread signal and PN-despreads the PN-spread signal with the PN code, and a second QPSK despreader orthogonally despreads the PN-despread signal with a complex orthogonal code having the real and imaginary parts of the assigned orthogonal code. In another aspect, the base station has a plurality of channels, a QPSK spreader for spreading symbol data of each channel by the real and imaginary parts of its assigned orthogonal code, and a QPSK spreader for PN-spreading the orthogonally spread signal with a PN code. In the demodulation method, a mobile station receives the PN-spread signal from the base station, PN-despreads the received signal with a PN code by a QPSK despreader, and orthogonally despreads the PN-despread signal with the assigned orthogonal code by a BPSK despreader. In both aspects, during the orthogonal despreading, the complex conjugate of the estimated pilot channel value is multiplied by the orthogonally despread signal, for compensation.

摘要翻译： 一种具有多个信道的移动站中的解调方法，用于从基站接收信号。 一方面，基站具有多个信道，用于以分配的正交码正交扩展每个信道的符号数据的BPSK扩展器，以及用PN码对正交扩展信号进行PN扩展的QPSK扩展器。 在解调方法中，移动站中的第一QPSK去扩频器接收PN扩展信号，并用PN码对PN扩展信号进行PN解扩，第二QPSK去扩频器以具有复数正交码的PN解扩信号正交解扩， 分配的正交码的实部和虚部。 另一方面，基站具有多个信道，QPSK扩展器，用于通过其分配的正交码的实部和虚部扩展每个信道的符号数据;以及QPSK扩展器，用于PN扩频，具有PN的正交扩展信号 码。 在解调方法中，移动台从基站接收PN扩展信号，用QPSK去扩频器对PN码进行PN解扩，并通过BPSK对所分配的正交码对PN解扩信号进行正交解扩 解散器 在两个方面，在正交解扩过程中，将估计的导频信道值的复共轭乘以正交解扩信号以进行补偿。

公开(公告)号：US08891649B2

公开(公告)日：2014-11-18

申请号：US13085993

申请日：2011-04-13

申请人： Yun-Seok Choi ,  Seung-Joo Maeng ,  Byung Chan Ahn

发明人： Yun-Seok Choi ,  Seung-Joo Maeng ,  Byung Chan Ahn

IPC分类号： H04B7/02 ,  H04W52/42 ,  H04W52/02 ,  H04W52/52

CPC分类号： H04W28/0221 ,  H04B7/0413 ,  H04B7/0615 ,  H04W52/0274 ,  H04W52/42 ,  H04W52/52 ,  H04W72/0446 ,  H04W72/1252 ,  Y02D70/126 ,  Y02D70/146

摘要： An apparatus and method reduce power consumption in a broadband wireless communication system. A transmitting end apparatus that includes a plurality of transmit (Tx) antennas includes a control block, a Processor (DSP) block, a modem block, and at least one power controller. The control block determines a traffic amount based on an amount of used resources. The Digital Signal Processor (DSP) block performs scheduling by using a subset of Tx antennas and a subset of resources on a frequency axis if the traffic amount is less than a threshold. The modem block applies boosting to a signal transmitted using the subset of resources. And at least one controller turns off an operation of at least one power amplifier that corresponds to at least one Tx antenna that is not included in the subset of Tx antennas.

摘要翻译： 一种降低宽带无线通信系统功耗的装置和方法。 包括多个发送（Tx）天线的发送端设备包括控制块，处理器（DSP）块，调制解调器块和至少一个功率控制器。 控制块基于所使用资源的数量来确定流量。 如果业务量小于阈值，则数字信号处理器（DSP）块通过使用Tx天线的子集和频率轴上的资源子集来执行调度。 调制解调器模块使用资源子集传输的信号进行升压。 并且至少一个控制器关闭对应于不包括在Tx天线的子集中的至少一个Tx天线的至少一个功率放大器的操作。