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1. 发明申请

US20100172316A1 RESOURCE ALLOCATION METHOD FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING ACCESS SYSTEM 审中-公开
标题翻译：正交频分多址接入系统的资源分配方法
公开(公告)号：US20100172316A1
公开(公告)日：2010-07-08
申请号：US12303577
申请日：2006-10-30
申请人： Sung-Hyun Hwang , Myung-Sun Song , Chang-Joo Kim , Yun-Hee Kim , Jae-Yun Won
发明人： Sung-Hyun Hwang , Myung-Sun Song , Chang-Joo Kim , Yun-Hee Kim , Jae-Yun Won
IPC分类号： H04W72/04
CPC分类号： H04L27/2608 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0027 , H04L5/0007 , H04L5/0039 , H04L5/0044 , H04L5/0048 , H04L5/006 , H04L5/0085 , H04L5/023
摘要： A resource allocation method for an orthogonal frequency division multiplexing access (OFDMA) system is provided. The resource allocation method includes dividing a frequency band occupied by a predetermined number of OFDM symbols into a plurality of subbands and determining the number of diversity subchannels, each of which comprises at least two time-frequency resources respectively included in different subbands, and the number of subband selective subchannels, which comprise time-frequency resources that are not included in the diversity subchannels; and generating the diversity subchannels and the subband selective subchannels according to the determined numbers and allocating a physical channel comprised of a generated subchannel to a user in a cell. Accordingly, diversity is enhanced without reducing the freedom of selection of a subband.
摘要翻译：提供了一种用于正交频分复用接入（OFDMA）系统的资源分配方法。资源分配方法包括将预定数量的OFDM符号占据的频带划分成多个子带，并确定分集子信道的数量，每个子信道包括分别包括在不同子带中的至少两个时间频率资源，并且数目子带选择性子信道，其包括不包括在分集子信道中的时间 - 频率资源; 以及根据确定的号码生成分集子信道和子带选择性子信道，并将由生成的子信道组成的物理信道分配给小区中的用户。因此，在不降低子带选择的自由度的情况下增强分集。

2. 发明申请

US20110167321A1 APPARATUS AND METHOD OF TRANSMITTING AND RECEIVING DATA FOR IMPROVING TRANSMISSION RATE 审中-公开
标题翻译：发送和接收数据以提高传输速率的装置和方法
公开(公告)号：US20110167321A1
公开(公告)日：2011-07-07
申请号：US12809392
申请日：2008-02-29
申请人： Sung-Hyun Hwang , Jung Sun Um , Myung Sun Song , Chang-Joo Kim , Se-Bin Im , Tae-Woong Yoon , Hyung-Jin Choi
发明人： Sung-Hyun Hwang , Jung Sun Um , Myung Sun Song , Chang-Joo Kim , Se-Bin Im , Tae-Woong Yoon , Hyung-Jin Choi
IPC分类号： H04L27/28 , H04B17/00 , H03M13/23 , G06F11/10
CPC分类号： H04L5/0051 , H04L25/0224 , H04L25/03292 , H04L27/2613 , H04L27/2647
摘要： A data transmitter and receiver for improving a data rate, and more particularly, to an apparatus and method of transmitting and receiving an orthogonal frequency division multiplexing (OFDM) symbol in which a pilot signal is added to a data signal is provided. The apparatus includes a transmitter including: a pilot adder to add a pilot signal to a data signal; and a guard interval inserting unit to insert a guard interval to the data signal with the added pilot signal, and a receiver including: a guard interval removal unit to remove a guard interval in a received time domain signal; a fast Fourier transform (FFT) unit to transform the time domain signal in which the guard interval is removed to a frequency domain signal; a channel estimator to estimate a channel value from the time domain signal in which the guard interval is removed; an equalizer to equalize the frequency domain signal based on the estimated channel value; and a pilot signal removal unit to remove the pilot signal in the equalized frequency domain signal.
摘要翻译：提供了一种用于提高数据速率的数据发送器和接收器，更具体地，涉及一种发送和接收其中向数据信号添加导频信号的正交频分复用（OFDM）符号的装置和方法。该装置包括：发射机，包括：导频加法器，用于将导频信号加到数据信号上; 以及保护间隔插入单元，用于利用所附加的导频信号向所述数据信号插入保护间隔;以及接收机，包括：保护间隔去除单元，用于去除所接收的时域信号中的保护间隔; 快速傅立叶变换（FFT）单元，用于将保护间隔被去除的时域信号变换为频域信号; 信道估计器，用于从保护间隔被去除的时域信号中估计信道值; 均衡器，用于基于估计的信道值来均衡频域信号; 以及导频信号去除单元，用于去除均衡的频域信号中的导频信号。

3. 发明申请

US20090274174A1 METHOD OF GENERATING PILOT PATTERN FOR ADAPTIVE CHANNEL ESTIMATION IN OFDMA SYSTEMS, METHOD OF TRANSMITTING/RECEIVING USING THE PILOT PATTERN AND APPARATUS THEREOF 有权
标题翻译：在OFDMA系统中生成用于自适应信道估计的导频图案的方法，使用导频图案发送/接收的方法及其装置
公开(公告)号：US20090274174A1
公开(公告)日：2009-11-05
申请号：US12298225
申请日：2007-04-24
申请人： Sung-Hyun Hwang , Chang-Joo Kim , Myung-Sun Song , Jung-Sun Um
发明人： Sung-Hyun Hwang , Chang-Joo Kim , Myung-Sun Song , Jung-Sun Um
IPC分类号： H04J1/00 , H04L27/28
CPC分类号： H04W72/0406 , H04L5/0007 , H04L5/0048
摘要： Provided is a method of generating a pilot pattern capable of perform adaptive channel estimation, and a method and apparatus of a base station and a method and apparatus of a terminal using the pilot pattern. The pilot pattern selects pilot symbol positions based on distances from pilots of previous orthogonal frequency division multiple access (OFDMA) symbols to a subcarrier position of a current OFDMA symbol in the frequency domain and the time domain, so that a low pilot density is maintained so as to effectively transmit data, and stable channel estimation performance can be obtained even in a bad channel environment. In addition, the minimum burst allocation size is determined according to the channel environment between the base station and the terminal, guaranteeing channel estimation performance suitable for the channel environment, and improving granularity, channel estimation latency, and channel estimation memory size.
摘要翻译：提供了一种生成能够执行自适应信道估计的导频模式的方法，以及基站的方法和装置以及使用导频模式的终端的方法和装置。导频模式基于从先前的正交频分多址（OFDMA）符号的导频到频域和时域中的当前OFDMA符号的子载波位置的距离来选择导频符号位置，从而维持低导频密度为了有效地发送数据，即使在恶劣的信道环境中也可以获得稳定的信道估计性能。另外，根据基站和终端之间的信道环境确定最小突发分配大小，保证适合信道环境的信道估计性能，提高粒度，信道估计延迟和信道估计存储器大小。

4. 发明申请

US20110149889A1 METHOD AND DEVICE FOR COMMUNICATION BETWEEN DEVICES WITH DIFFERENT TRANSMISSION COVERAGE 失效
标题翻译：用于与具有不同传输覆盖的设备之间通信的方法和设备
公开(公告)号：US20110149889A1
公开(公告)日：2011-06-23
申请号：US12942491
申请日：2010-11-09
申请人： Jung Sun UM , Gwangzeen Ko , Sung-Hyun Hwang , Myung Sun Song , Chang-Joo Kim
发明人： Jung Sun UM , Gwangzeen Ko , Sung-Hyun Hwang , Myung Sun Song , Chang-Joo Kim
IPC分类号： H04W72/04
CPC分类号： H04W72/1205 , H04W84/045 , H04W84/047
摘要： Provided is a large range management device (LRMD) of managing a communication between a plurality of small range devices (SRDs) and a plurality of large range devices (LRDs), the SRDs and the LRDs being located in a single cell and having different transmission coverage, the LRMD including an access slot allocation unit to allocate an SRD access slot to a radio resource for a downlink, to enable a first SRD to request an association from a network, a selection unit to select a communication relay device for relaying relay data of the first SRD, a relay slot allocation unit to allocate at least one SRD relay slot to a radio resource for an uplink, to enable the communication relay device to relay the relay data to a second SRD or another LRD, and a receiving unit to receive the relay data based on the at least one SRD relay slot
摘要翻译：提供了一种管理多个小范围设备（SRD）和多个大范围设备（LRD）之间的通信的大范围管理设备（LRMD），SRD和LRD位于单个小区中并具有不同的传输覆盖，所述LRMD包括接入时隙分配单元，用于向下行链路的无线电资源分配SRD接入时隙，以使得第一SRD能够从网络请求关联，所述选择单元选择用于中继中继数据的通信中继设备的第一SRD的中继时隙分配单元，用于向上行链路的无线资源分配至少一个SRD中继时隙，以使得所述通信中继设备能够将所述中继数据中继到第二SRD或另一个LRD;以及接收单元，基于所述至少一个SRD中继槽接收所述中继数据

5. 发明申请

US20100177645A1 METHOD FOR MANAGING MULTIPLE FREQUENCY ASSIGNMENT USING TERMINAL'S RECEIVED PERFORMANCE IN OFDMA WRAN SYSTEM 失效
标题翻译：使用终端在OFDMA报文系统中接收到的性能来管理多个频率分配的方法
公开(公告)号：US20100177645A1
公开(公告)日：2010-07-15
申请号：US12376657
申请日：2007-08-08
申请人： Bub-Joo Kang , Chang-Joo Kim , Myung-Sun Song , Gwang-Zeen Ko , Sung-Hyun Hwang , Hyung-Rae Park
发明人： Bub-Joo Kang , Chang-Joo Kim , Myung-Sun Song , Gwang-Zeen Ko , Sung-Hyun Hwang , Hyung-Rae Park
IPC分类号： H04W72/04 , H04L12/26
CPC分类号： H04L27/2614 , H04B17/24 , H04B17/318 , H04B17/364 , H04B17/382 , H04L1/0003 , H04W24/10 , H04W72/02 , H04W72/0453
摘要： There is a provided a method for managing a multiple frequency assignment using a terminal's RX performance in an orthogonal frequency division multiple access (OFDMA) wireless regional area network (WRAN) system, including: a) measuring a bit energy/noise power spectral density (Eb/No) and a received signal strength indicator (RSSI) which are received in the terminal; b) informing the measured Eb/No and RSSI of a base station; c) calculating a round trip delay (RTD) in the base station; d) determining a terminal performance level based on the measured Eb/No, RSSI and the calculated RTD; and e) determining a frequency channel and modulation scheme based on the determined performance level.
摘要翻译：提供了一种用于在正交频分多址（OFDMA）无线区域网（WRAN）系统中使用终端的RX性能来管理多频分配的方法，包括：a）测量位能量/噪声功率谱密度 Eb / No）和接收到的信号强度指示符（RSSI）; b）通知基站的测量Eb / No和RSSI; c）计算基站中的往返延迟（RTD）; d）基于测量的Eb / No，RSSI和所计算的RTD确定终端性能水平; 以及e）基于所确定的性能水平来确定频道和调制方案。

6. 发明申请

US20100040080A1 METHOD OF AND APPARATUS FOR ALLOCATING SUB-CHANNELS IN ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS (OFDMA) SYSTEM 审中-公开
标题翻译：在正交频分多址（OFDMA）系统中分配子信道的方法和装置
公开(公告)号：US20100040080A1
公开(公告)日：2010-02-18
申请号：US12527569
申请日：2008-03-06
申请人： Jung-Sun Um , Sung-Hyun Hwang , Chang-Joo Kim , Myung-Sun Song
发明人： Jung-Sun Um , Sung-Hyun Hwang , Chang-Joo Kim , Myung-Sun Song
IPC分类号： H04J3/16
CPC分类号： H04L5/023 , H04L5/0039 , H04L5/0041 , H04L5/006
摘要： A method and apparatus for allocating subchannels in an orthogonal frequency division multiple access (OFDMA) system is provided. In the method and apparatus, mixed bands in each of which adjacent subcarriers and distributed subcarriers are mixed are used to form a band of a basic physical resource. Accordingly, diversity subchannels each comprised of distributed subcarriers distributed over the whole band and band subchannels each comprised of adjacent subcarriers adjacent to parts of the band are formed in a single OFDMA symbol, thereby simultaneously and flexibly allocating subchannels to users.
摘要翻译：提供了一种用于在正交频分多址（OFDMA）系统中分配子信道的方法和装置。在该方法和装置中，使用相邻副载波和分布式副载波混合的混合频带，形成基本物理资源的频带。因此，在单个OFDMA符号中形成各自包含分布在整个频带上的分布式子载波的分集子信道和每个包括与频带部分相邻的相邻子载波的频带子信道，从而同时且灵活地向用户分配子信道。

7. 发明申请

US20090219909A1 METHOD FOR SWITCHING AND MANAGING FREQUENCY ACCESS IN COGNITIVE RADIO SYSTEM, BASE STATION AND SUBSCRIBER STATION USING THE SAME 审中-公开
标题翻译：用于切换和管理认知无线电系统中的频率访问的方法，使用该方法的基站和订户站
公开(公告)号：US20090219909A1
公开(公告)日：2009-09-03
申请号：US12093629
申请日：2006-11-16
申请人： Gwangzeen Ko , Sung Hyun Hwang , Bub-Joo Kang , Chung-Gu Kang , Il-Hwan Kim , Chang-Joo Kim , Myung Sun Song
发明人： Gwangzeen Ko , Sung Hyun Hwang , Bub-Joo Kang , Chung-Gu Kang , Il-Hwan Kim , Chang-Joo Kim , Myung Sun Song
IPC分类号： H04J1/00
CPC分类号： H04W36/06 , H04W16/14 , H04W72/0413
摘要： Provided are a channel switching method for effectively performing channel switching in a cognitive radio system while protecting an incumbent user, a method of managing a frequency channel, and a base station and customer premises equipment (CPE) using the methods. In the channel switching method performed by the base station, a currently unavailable first frequency channel is detected from among at least one uplink/downlink frequency channel which is set as a communication channel with the CPE; a channel switching request message requesting switching from the first frequency channel to a second frequency channel is transmitted to the CPE; and the first frequency channel is switched to the second frequency channel when a channel switching report message reporting that channel switching is to be performed in response to the channel switching request message is received from the CPE.
摘要翻译：提供了一种用于在保护现有用户，管理频率信道的方法以及使用该方法的基站和用户驻地设备（CPE））中有效地执行认知无线电系统中的信道切换的信道切换方法。在由基站执行的信道切换方法中，从被设置为与CPE的通信信道的至少一个上行链路/下行链路频率信道中检测出当前不可用的第一频率信道; 请求从第一频道切换到第二频道的频道切换请求消息被传送到CPE; 并且当从CPE接收到响应于信道切换请求消息报告要进行信道切换的信道切换报告消息时，第一频道切换到第二频道。

8. 发明授权

US08787271B2 Method and device for communication between devices with different transmission coverage 失效
标题翻译：具有不同传输覆盖率的设备之间的通信方法和设备
公开(公告)号：US08787271B2
公开(公告)日：2014-07-22
申请号：US12942491
申请日：2010-11-09
申请人： Jung Sun Um , Gwangzeen Ko , Sung-Hyun Hwang , Myung Sun Song , Chang-Joo Kim
发明人： Jung Sun Um , Gwangzeen Ko , Sung-Hyun Hwang , Myung Sun Song , Chang-Joo Kim
IPC分类号： H04W4/00 , H04W72/12 , H04W84/04
CPC分类号： H04W72/1205 , H04W84/045 , H04W84/047
摘要： Provided is a large range management device (LRMD) of managing a communication between a plurality of small range devices (SRDs) and a plurality of large range devices (LRDs), the SRDs and the LRDs being located in a single cell and having different transmission coverage, the LRMD including an access slot allocation unit to allocate an SRD access slot to a radio resource for a downlink, to enable a first SRD to request an association from a network, a selection unit to select a communication relay device for relaying relay data of the first SRD, a relay slot allocation unit to allocate at least one SRD relay slot to a radio resource for an uplink, to enable the communication relay device to relay the relay data to a second SRD or another LRD, and a receiving unit to receive the relay data based on the at least one SRD relay slot.
摘要翻译：提供了一种管理多个小范围设备（SRD）和多个大范围设备（LRD）之间的通信的大范围管理设备（LRMD），SRD和LRD位于单个小区中并具有不同的传输覆盖，所述LRMD包括接入时隙分配单元，用于向下行链路的无线电资源分配SRD接入时隙，以使得第一SRD能够从网络请求关联，所述选择单元选择用于中继中继数据的通信中继设备的第一SRD的中继时隙分配单元，用于向上行链路的无线资源分配至少一个SRD中继时隙，以使得所述通信中继设备能够将所述中继数据中继到第二SRD或另一个LRD;以及接收单元，基于所述至少一个SRD中继槽接收所述中继数据。

9. 发明授权

US08488526B2 Network communication method and network device using preamble 有权
标题翻译：网络通信方式和使用前导码的网络设备
公开(公告)号：US08488526B2
公开(公告)日：2013-07-16
申请号：US12747299
申请日：2008-12-10
申请人： Sung-Hyun Hwang , Jung-Sun Um , Gwangzeen Ko , Myung-Sun Song , Chang-Joo Kim
发明人： Sung-Hyun Hwang , Jung-Sun Um , Gwangzeen Ko , Myung-Sun Song , Chang-Joo Kim
IPC分类号： H04J11/00 , H04J3/24 , H04W4/00
CPC分类号： H04W52/283 , H04L7/041 , H04W16/14 , H04W48/16 , H04W72/082
摘要： Provided are a network communication method and a network device using a preamble. According to the network communication method and the network device, network coexistence is easily achieved by using network identification transmitted in the preamble, and an unknown terminal, which has a low reception signal to noise ratio (SNR) and has not yet been connected to an existing network, is easily connected to the existing network.
摘要翻译：提供了一种网络通信方法和使用前置码的网络设备。根据网络通信方式和网络设备，通过使用在前导码中发送的网络识别和具有低接收信噪比（SNR）并且尚未连接到前导码的未知终端容易地实现网络共存现有网络，轻松连接到现有网络。

10. 发明授权

US08326336B2 Apparatus and method for communication in cognitive radio network 失效
标题翻译：认知无线电网络通信的装置和方法
公开(公告)号：US08326336B2
公开(公告)日：2012-12-04
申请号：US12858841
申请日：2010-08-18
申请人： Jung-Sun Um , Myung-Sun Song , Chang-Joo Kim , Gwangzeen Ko , Sung-Hyun Hwang , Sang-Won Kim , Changhyun Park
发明人： Jung-Sun Um , Myung-Sun Song , Chang-Joo Kim , Gwangzeen Ko , Sung-Hyun Hwang , Sang-Won Kim , Changhyun Park
IPC分类号： H04B17/00 , H04B7/00 , H04B5/00
CPC分类号： H04W72/085 , H04W16/14 , H04W72/042
摘要： A CR apparatus for performing communication in a CR network includes: a communication unit configured to measure a channel estimation signal, transmit measured channel state information to a master device, and, when a QP of a reference channel arrives, make a communication channel transition to a candidate channel and perform communication; and a channel information management unit configured to receive and manage the channel state information measured by the communication unit and channel information comprising a candidate channel, into which a channel transition is to be made during a QP of the reference channel, received from the master device and control channel transition of the communication unit based on the channel information.
摘要翻译：用于在CR网络中执行通信的CR装置包括：通信单元，被配置为测量信道估计信号，将测量的信道状态信息发送到主设备，并且当参考信道的QP到达时，使通信信道转换到候选频道并进行通信; 以及信道信息管理单元，被配置为接收和管理由所述通信单元测量的信道状态信息，以及信道信息，所述信道信息包括在从所述主设备接收的参考信道的QP期间将要进行信道转换的候选信道以及基于信道信息的通信单元的控制信道转换。

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