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1. 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。

2. 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。

3. 发明授权

US08477799B2 Method for using flexible bandwidth in OFDMA-based cognitive radio system, base station and subscriber station using the same 有权
标题翻译：在基于OFDMA的认知无线电系统中使用灵活带宽的方法，使用该认知无线电系统的基站和用户站
公开(公告)号：US08477799B2
公开(公告)日：2013-07-02
申请号：US12092722
申请日：2006-11-07
申请人： Sung Hyun Hwang , Myung Sun Song , Yun Hee Kim , Chang Joo Kim , Gwangzeen Ko , Jung Sun Um
发明人： Sung Hyun Hwang , Myung Sun Song , Yun Hee Kim , Chang Joo Kim , Gwangzeen Ko , Jung Sun Um
IPC分类号： H04J3/16 , H04J9/00 , H04W4/00 , H04W72/00
CPC分类号： H04L5/0044 , H04L5/0007 , H04L5/0037 , H04L5/0053 , H04L5/0064 , H04L5/0094
摘要： Provided are a method for using a flexible bandwidth in an orthogonal frequency division multiple access (OFDMA)-based cognitive radio system, and a base station (BS) and a subscriber station using the method. The method includes: allocating a channel band from among unused channel bands having a bandwidth that is a natural number times a bandwidth resolution to customer premises equipment (CPE), wherein the bandwidth resolution is a predetermined bandwidth smaller than a bandwidth of a broadcast channel band, and transmitting an OFDMA-based signal comprising band allocation information indicating information regarding the allocated channel band.
摘要翻译：提供了一种在基于正交频分多址（OFDMA）的认知无线电系统中使用灵活带宽的方法，以及使用该方法的基站（BS）和订户站。该方法包括：从具有自然数乘以带宽分辨率的带宽的未使用信道频带分配给客户端设备（CPE）的信道频带，其中带宽分辨率是比广播信道频带的带宽小的预定带宽并且发送包括指示关于所分配的信道频带的信息的频带分配信息的基于OFDMA的信号。

4. 发明申请

US20090135713A1 METHOD FOR USING FLEXIBLE BANDWIDTH IN OFDMA-BASED COGNITIVE RADIO SYSTEM, BASE STATION AND SUBSCRIBER STATION USING THE SAME 有权
标题翻译：基于OFDMA的认知无线电系统中使用灵活带宽的方法，使用该方法的基站和订户站
公开(公告)号：US20090135713A1
公开(公告)日：2009-05-28
申请号：US12092722
申请日：2006-11-07
申请人： Sung Hyun Hwang , Myung Sun Song , Yun Hee Kim , Chang Joo Kim , Gwangzeen Ko , Jung Sun Um
发明人： Sung Hyun Hwang , Myung Sun Song , Yun Hee Kim , Chang Joo Kim , Gwangzeen Ko , Jung Sun Um
IPC分类号： H04J11/00
CPC分类号： H04L5/0044 , H04L5/0007 , H04L5/0037 , H04L5/0053 , H04L5/0064 , H04L5/0094
摘要： Provided are a method for using a flexible bandwidth in an orthogonal frequency division multiple access (OFDMA)-based cognitive radio system, and a base station (BS) and a subscriber station using the method. The method includes: allocating a channel band from among unused channel bands having a bandwidth that is a natural number times a bandwidth resolution to customer premises equipment (CPE), wherein the bandwidth resolution is a predetermined bandwidth smaller than a bandwidth of a broadcast channel band, and transmitting an OFDMA-based signal comprising band allocation information indicating information regarding the allocated channel band.
摘要翻译：提供了一种在基于正交频分多址（OFDMA）的认知无线电系统中使用灵活带宽的方法，以及使用该方法的基站（BS）和订户站。该方法包括：从具有自然数乘以带宽分辨率的带宽的未使用信道频带分配给客户端设备（CPE）的信道频带，其中带宽分辨率是比广播信道频带的带宽小的预定带宽并且发送包括指示关于所分配的信道频带的信息的频带分配信息的基于OFDMA的信号。

5. 发明授权

US08600418B2 Relay station for cell information exchange between adjacent BSs over air links in cellular systems 有权
标题翻译：用于蜂窝系统中空中链路的相邻BS之间的小区信息交换的中继站
公开(公告)号：US08600418B2
公开(公告)日：2013-12-03
申请号：US12556041
申请日：2009-09-09
申请人： Gwangzeen Ko , Chang Joo Kim , Myung Sun Song , Sung Hyun Hwang , Sung Jin You , Jung Sun Um
发明人： Gwangzeen Ko , Chang Joo Kim , Myung Sun Song , Sung Hyun Hwang , Sung Jin You , Jung Sun Um
IPC分类号： H04B7/00
CPC分类号： H04B7/1555 , H04B7/2606 , H04W16/26 , H04W84/045 , H04W92/20
摘要： The present invention relates to relay customer premises equipment (RCPE) for exchanging operational information and coexistence information of each cell between adjacent cells in a cellular system. The present invention enables effective control between multiple cells by directly transmitting operational information and coexistence information between cells over air links.
摘要翻译：本发明涉及用于交换蜂窝系统中相邻小区之间的每个小区的操作信息和共存信息的中继客户驻地设备（RCPE）。本发明通过在小区之间直接发送操作信息和小区之间的共存信息来实现多个小区之间的有效控制。

6. 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

7. 发明申请

US20110103320A1 CONTENTION-BASED DATA COMMUNICATION APPARATUS AND METHOD 审中-公开
标题翻译：基于内容的数据通信设备和方法
公开(公告)号：US20110103320A1
公开(公告)日：2011-05-05
申请号：US12836113
申请日：2010-07-14
申请人： Sung-jin YOU , Gwangzeen Ko , Sung-Hyun Hwang , Jung Sun Um , Myung Sun Song , Chang-Joo Kim
发明人： Sung-jin YOU , Gwangzeen Ko , Sung-Hyun Hwang , Jung Sun Um , Myung Sun Song , Chang-Joo Kim
IPC分类号： H04W72/04 , H04L12/413
CPC分类号： H04W74/08 , H04W8/005
摘要： Provided is a contention-based data communication apparatus and method that may notify that a radio resource is to be used using a search signal prior to transmitting a communication frame, and may transmit data based on a priority when a search signal received from another communication apparatus is detected.
摘要翻译：提供了一种基于竞争的数据通信装置和方法，其可以在发送通信帧之前通过使用搜索信号来通知使用无线电资源，并且当从另一个通信装置接收到的搜索信号时可以基于优先级发送数据被检测到。

8. 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。

9. 发明申请

US20090190537A1 METHOD, APPARATUS FOR DYNAMIC RESOURCE ALLOCATION METHOD IN OFDMA-BASED COGNITIVE RADIO SYSTEM AND FORWARD LINK FRAME STRUCTURE THEREOF 审中-公开
标题翻译：方法，基于OFDMA的认知无线电系统动态资源分配方法及其前向链路帧结构的方法
公开(公告)号：US20090190537A1
公开(公告)日：2009-07-30
申请号：US12093485
申请日：2006-11-14
申请人： Sung Hyun Hwang , Gwangzeen Ko , Myung Sun Song , Soon Ik Jeon , Chang Joo Kim , KyungHi Chang , Jung Ju Kim , Sang Jun Ko
发明人： Sung Hyun Hwang , Gwangzeen Ko , Myung Sun Song , Soon Ik Jeon , Chang Joo Kim , KyungHi Chang , Jung Ju Kim , Sang Jun Ko
IPC分类号： H04W72/04
CPC分类号： H04L25/0232 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L5/0007 , H04L5/0032 , H04L5/0039 , H04L5/0044 , H04L5/0048 , H04L5/006 , H04L5/0085 , H04L25/0226 , H04W72/0453
摘要： Provided are a dynamic resource allocation method and apparatus in an Orthogonal Frequency Division Multiple Access (OFDMA)-based cognitive radio system and a downlink frame structure of the method and apparatus. The method includes a base station (BS) selecting one of an Adaptive Modulation and Coding (AMC) subchannel allocation scheme, in which a subchannel comprising at least one bin comprising a first plurality of continuous subcarriers in a frequency domain, is allocated, and a diversity subchannel allocation scheme, in which a subchannel comprising a second plurality of scattered subcarriers in the frequency domain is allocated, according to a level of frequency selectivity of an unused idle frequency band; and the BS allocating at least one subchannel to a terminal according to the selected subchannel allocation scheme. Accordingly, downlink throughput in the cognitive radio system can be increased.
摘要翻译：提供了一种基于正交频分多址（OFDMA）的认知无线电系统中的动态资源分配方法和装置以及该方法和装置的下行链路帧结构。该方法包括选择自适应调制和编码（AMC）子信道分配方案之一的基站（BS），其中包括包括频域中的第一多个连续子载波的至少一个分组的子信道，并且分集子信道分配方案，其中根据未使用的空闲频带的频率选择性的级别分配包括频域中的第二多个分散子载波的子信道; 并且BS根据所选择的子信道分配方案向终端分配至少一个子信道。因此，可以增加认知无线电系统中的下行链路吞吐量。

10. 发明申请

US20090161610A1 METHOD OF FREQUENCY CHANNEL ASSIGNMENT USING EFFECTIVE SPECTRUM SENSING IN MULTIPLE FREQUENCY ASSIGNMENT SYSTEM 有权
标题翻译：在多频分配系统中使用有效频谱感测的频率信道分配方法
公开(公告)号：US20090161610A1
公开(公告)日：2009-06-25
申请号：US12089948
申请日：2006-10-13
申请人： Bub Joo Kang , Myung Sun Song , Chang Joo Kim
发明人： Bub Joo Kang , Myung Sun Song , Chang Joo Kim
IPC分类号： H04W72/00
CPC分类号： H04W16/14 , H04B1/715 , H04W16/10 , H04W72/042 , H04W72/06 , H04W72/085 , H04W72/10
摘要： Provided is a method of assigning a frequency channel using efficient spectrum sensing in a multiple Frequency Assignment (FA) system. The method includes a channel sensing process, wherein abase station (BS) of a secondary user classifies multiple frequency channels licensed to a primary user into a plurality of channel states by changing a sensing period according to the types of classified channel state sets, and manages the sensed channel states as frequency channel state set information; a channel state set broadcasting process, wherein the BS transmits the frequency channel state set information manage d in the channel sensing process to secondary user terminals using a broadcast message; and a channel assigning process, wherein if the BS receives a channel assignment request message from a new secondary user terminal which has received the broadcast message, the BS assigns an unused frequency channel from among frequency channels licensed to the primary user to the new secondary user terminal using the frequency channel state set information. Accordingly, a frequency channel can be assigned to a secondary user requesting channel assignment using frequency channel state set information without a primary user experiencing interference noise.
摘要翻译：提供了一种在多频分配（FA）系统中使用有效频谱感测来分配频道的方法。该方法包括信道感测过程，其中次要用户的基站（BS）根据分类信道状态集的类型改变感测周期，将许可给主用户的多个频率信道分类为多个信道状态，并且管理感测信道状态为频道状态集信息; 信道状态集广播处理，其中，所述BS使用广播消息将频道感测处理中的频道状态集信息管理d发送给次用户终端; 以及信道分配处理，其中，如果所述BS从已经接收到所述广播消息的新的辅助用户终端接收到信道分配请求消息，则所述BS将许可给所述主用户的频率信道中的未使用的频率信道分配给所述新的辅助用户终端使用频道状态集信息。因此，频率信道可以被分配给辅助用户使用频道状态集信息来请求信道分配，而不会使主用户遇到干扰噪声。

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