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1. 发明授权

US09332440B2 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道分配方法
公开(公告)号：US09332440B2
公开(公告)日：2016-05-03
申请号：US13584049
申请日：2012-08-13
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： H04W16/14 , H04B1/715 , H04W72/06 , H04W72/10 , H04W16/10 , H04W72/04 , H04W72/08
CPC分类号： H04W16/14 , H04B1/715 , H04W16/10 , H04W72/042 , H04W72/06 , H04W72/085 , H04W72/10
摘要： A method of assigning a frequency channel using efficient spectrum sensing in a multiple Frequency Assignment system includes a channel sensing process, wherein a base station of a secondary user classifies multiple frequency channels licensed to a primary user into a plurality of channel state sets according to usage states, periodically senses 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; and a channel assigning process. 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：一种在多频分配系统中使用有效的频谱感测来分配频道的方法包括信道感测过程，其中次用户的基站根据使用将授权给主用户的多个频率分组为多个信道状态集合状态通过根据分类信道状态集的类型改变感测周期来周期性地感测信道状态，并且将所感测的信道状态管理为频道状态集信息; 信道状态集广播过程; 和频道分配过程。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。

2. 发明授权

US09215661B2 Transmission power control method and device for cognitive radio device 有权
标题翻译：用于认知无线电设备的传输功率控制方法和装置
公开(公告)号：US09215661B2
公开(公告)日：2015-12-15
申请号：US13266931
申请日：2010-04-29
申请人： Sung-Hyun Hwang , Gwangzeen Ko , Chang-Joo Kim , Myung-Sun Song , Jung-Sun Um , Min-Sheo Choi
发明人： Sung-Hyun Hwang , Gwangzeen Ko , Chang-Joo Kim , Myung-Sun Song , Jung-Sun Um , Min-Sheo Choi
IPC分类号： H04W52/04
CPC分类号： H04W52/04
摘要： A method and an apparatus for controlling transmit power of a CR device are provided. The method includes acquiring CR environment information regarding a licensed user or an unlicensed user occupying an adjacent channel or an adjacent cell of the CR device; determining a transmit power value of the CR device using the CR environment information; and generating transmit power control information including the transmit power value. The method and apparatus guarantee reliable communication of the CR device and minimize interference with the licensed user.
摘要翻译：提供了一种用于控制CR设备的发射功率的方法和装置。该方法包括获取关于许可用户或占用CR设备的相邻信道或相邻小区的未许可用户的CR环境信息; 使用所述CR环境信息确定所述CR设备的发射功率值; 以及生成包括发送功率值的发送功率控制信息。该方法和装置保证了CR设备的可靠通信，并最大限度地减少与许可用户的干扰。

3. 发明授权

US08855144B2 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
公开(公告)号：US08855144B2
公开(公告)日：2014-10-07
申请号：US13014213
申请日：2011-01-26
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： H04B3/10 , H04L5/00
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.

4. 发明授权

US08675594B2 Method for sensing spectrum and arranging quiet period in cognitive radio system, customer premise equipment, base station and superframe structure using the same 失效
标题翻译：在认知无线电系统，客户端设备，基站和超帧结构中使用相同的感测频谱和安排周期的方法
公开(公告)号：US08675594B2
公开(公告)日：2014-03-18
申请号：US12279248
申请日：2007-02-14
申请人： Bub-Joo Kang , Gwangzeen Ko , Sung-Hyun Hwang , Myung-Sun Song , Chang-Joo Kim
发明人： Bub-Joo Kang , Gwangzeen Ko , Sung-Hyun Hwang , Myung-Sun Song , Chang-Joo Kim
IPC分类号： H04W4/00 , H04L12/28
CPC分类号： H04W72/085 , H04W16/14
摘要： Provided are methods of spectrum sensing and assigning quiet periods in a cognitive radio system in order to increase the reliability of detection regarding whether an incumbent user appears in his/her frequency channel, customer premises equipment (CPE), a base station, and the structure of a super frame for performing the methods. The spectrum sensing method includes communicating with a base station (BS) and performing spectrum sensing for frequency channels having quiet periods (QPs) during the QPs of the frequency channels used in the cognitive radio system, wherein the QPs of the frequency channels do not overlap each other
摘要翻译：提供了在认知无线电系统中的频谱感测和安静时段的方法，以便提高对现有用户是否出现在他/她的频率信道，客户端设备（CPE），基站和结构中的检测的可靠性的超帧执行方法。频谱感测方法包括与基站（BS）进行通信，并且在认知无线电系统中使用的频率信道的QP期间对具有安静周期（QP）的频率信道执行频谱感测，其中频率信道的QP不重叠彼此

5. 发明授权

US08619699B2 Channel switching apparatus and method of a base station and channel switching apparatus and method of a terminal based on the cognitive radio system 有权
标题翻译：基于认知无线电系统的基站的信道切换装置和方法以及终端的信道切换装置和方法
公开(公告)号：US08619699B2
公开(公告)日：2013-12-31
申请号：US12808507
申请日：2008-12-05
申请人： Gwangzeen Ko , Sung-Jin You , Myung-Sun Song , Sung-Hyun Hwang , Jung-Sun Um , Chang-Joo Kim
发明人： Gwangzeen Ko , Sung-Jin You , Myung-Sun Song , Sung-Hyun Hwang , Jung-Sun Um , Chang-Joo Kim
IPC分类号： H04W4/00
CPC分类号： H04W48/12 , H04W16/14 , H04W36/06 , H04W72/042 , H04W72/0446
摘要： A channel switching method is provided for a base station to allocate a slot for data exchange with each of a plurality of terminals in a frequency channel that is not used by an incumbent user (IU). The method includes include transmitting a channel switching message for requesting to switch to a backup channel when a signal of the IU is sensed in the frequency channel; transmitting a beacon frame via the backup channel, wherein the beacon frame comprises allocation information about slots which are in the frequency channel and which are respectively allocated to each of the plurality of terminals; and allocating the slot for data exchange with each of the plurality of terminals to the backup channel according to the allocation information, and communicating with each of the plurality of terminals.
摘要翻译：提供了一种信道切换方法，用于基站分配用于在现有用户（IU）未使用的频率信道中的多个终端中的每个终端进行数据交换的时隙。该方法包括在频率信道中感测到IU的信号时发送用于请求切换到备用信道的信道切换消息; 经由所述备份信道发送信标帧，其中，所述信标帧包括关于处于所述频道中并且分别分配给所述多个终端中的每一个的时隙的分配信息; 以及根据所述分配信息将与所述多个终端中的每一个进行数据交换的时隙分配给备份信道，并与所述多个终端中的每一个进行通信。

6. 发明申请

US20130170464A1 APPARATUS AND METHOD FOR CONTROLLING SUBCARRIER SPACING IN A WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：用于控制无线通信系统中子载波间隔的装置和方法
公开(公告)号：US20130170464A1
公开(公告)日：2013-07-04
申请号：US13822578
申请日：2011-09-09
申请人： Sung Hyun Hwang , Jung Sun Um , Hoi Yoon Jung , Gwang Zeen Ko , Byung Jang Jeong , Chang Joo Kim
发明人： Sung Hyun Hwang , Jung Sun Um , Hoi Yoon Jung , Gwang Zeen Ko , Byung Jang Jeong , Chang Joo Kim
IPC分类号： H04W72/08
CPC分类号： H04W72/082 , H04J11/0023 , H04L27/2666 , H04L27/2691
摘要： Provided is an apparatus for controlling subcarrier spacing in a system supporting multiple frequency bands. The apparatus for controlling a subcarrier spacing comprises: an interference detection unit detecting interference over multiple frequency bands; a system parameter provision unit providing system parameters related to a subcarrier spacing between the multiple frequency bands—for example RF, FFT size, and channel bandwidth; a subcarrier spacing control unit controlling the subcarrier spacing such that the detected interference is reduced, on the basis of the system parameters. In a system operating with multiple bands, different subcarrier spacing can be applied by each band, thereby controlling interference occurring in each band.
摘要翻译：提供一种用于控制支持多个频带的系统中的子载波间隔的装置。用于控制子载波间隔的装置包括：干扰检测单元，检测多个频带上的干扰; 提供与多个频带之间的子载波间隔有关的系统参数的系统参数提供单元，例如RF，FFT大小和信道带宽; 子载波间隔控制单元，基于系统参数控制子载波间隔，使得检测到的干扰减小。在使用多个频带的系统中，每个频带可以应用不同的子载波间隔，从而控制每个频带中发生的干扰。

7. 发明授权

US08471774B2 Apparatus and method for measuring antenna radiation patterns 有权
标题翻译：用于测量天线辐射图的装置和方法
公开(公告)号：US08471774B2
公开(公告)日：2013-06-25
申请号：US12678203
申请日：2008-09-19
申请人： Soon-Soo Oh , Yong-Heui Cho , In-Kui Cho , Je Hoon Yun , Soon Ik Jeon , Chang-Joo Kim
发明人： Soon-Soo Oh , Yong-Heui Cho , In-Kui Cho , Je Hoon Yun , Soon Ik Jeon , Chang-Joo Kim
IPC分类号： G01R29/10 , H01Q3/00
CPC分类号： G01R29/10
摘要： An antenna radiation pattern measurement device that measures a radiation pattern of an AUT by using a source antenna includes a control unit, an analysis unit, and a measurement unit. The control unit controls driving of the source antenna and the AUT. The analysis unit measures an electric field value from a radio frequency (RF) signal that is transmitted from one of the source antenna and the AUT and received by the other antenna. In addition, the measurement unit controls the control unit and the analysis unit and measures a radiation pattern of the AUT by using the electric field value.
摘要翻译：通过使用源天线测量AUT的辐射图案的天线辐射图测量装置包括控制单元，分析单元和测量单元。控制单元控制源天线和AUT的驱动。分析单元从源天线和AUT中的一个发射并由另一个天线接收的射频（RF）信号测量电场值。此外，测量单元控制控制单元和分析单元，并通过使用电场值测量AUT的辐射图。

8. 发明授权

US08386215B2 Method and apparatus for radio propagation modeling using ray-tracing method 有权
标题翻译：使用射线跟踪方法进行无线电传播建模的方法和装置
公开(公告)号：US08386215B2
公开(公告)日：2013-02-26
申请号：US12599992
申请日：2008-02-27
申请人： Jong Ho Kim , Young Keun Yoon , Heon Jin Hong , Chang-Joo Kim
发明人： Jong Ho Kim , Young Keun Yoon , Heon Jin Hong , Chang-Joo Kim
IPC分类号： G06F17/50
CPC分类号： H04B17/391
摘要： A method and apparatus for modeling radio propagation is provided. In the method, when a wall having a thickness is modeled as a line having no thickness, an error in a shade area is minimized by considering the thickness of a wall while maintaining simplicity in a ray-tracing method.
摘要翻译：提供了一种无线电传播建模方法和装置。在该方法中，当具有厚度的壁被建模为不具有厚度的线时，通过考虑壁的厚度，同时保持光线跟踪方法的简单性，使遮光区域中的误差最小化。

9. 发明授权

US08279132B2 Multi-mode antenna and method of controlling mode of the antenna 失效
标题翻译：多模天线和天线控制方式
公开(公告)号：US08279132B2
公开(公告)日：2012-10-02
申请号：US12529901
申请日：2008-03-05
申请人： Young-Bae Jung , Soon-Young Eom , Soon-Ik Jeon , Chang-Joo Kim
发明人： Young-Bae Jung , Soon-Young Eom , Soon-Ik Jeon , Chang-Joo Kim
IPC分类号： H01Q21/00 , H01Q3/24
CPC分类号： H01Q1/246 , H01Q21/065
摘要： Provided is an antenna for a base station and a repeater capable of electrically or mechanically controlling the individual operation of an element antenna constituting an array antenna or a sub-array antenna so as to adaptively cope with the change in the communication environment, and having an economic and high performance transmitting and receiving function, and a method of controlling a mode of the antenna. The multi-mode antenna includes a radiation portion having one or more array antenna and capable of selectively changing an antenna effective opening surface and changing a resistance direction of an antenna beam pattern, an active channel portion connected to the array antennas and including switches, transmission and receiving channels, and a signal combiner and splitter, and a modem and control portion connected to the active channel portion and having a control portion and a modem.
摘要翻译：提供一种用于基站和中继器的天线，其能够电或机械地控制构成阵列天线或子阵列天线的元件天线的各自的操作，以便自适应地应对通信环境的变化，并且具有经济和高性能的发射和接收功能，以及一种控制天线模式的方法。多模式天线包括具有一个或多个阵列天线的辐射部分，并且能够选择性地改变天线有效开口面并改变天线波束图案的电阻方向，连接到阵列天线的有源信道部分并且包括开关，传输和接收信道，以及信号组合器和分离器，以及连接到有源信道部分并具有控制部分和调制解调器的调制解调器和控制部分。

10. 发明申请

US20120100883A1 TRANSMISSION POWER CONTROL METHOD AND DEVICE FOR COGNITIVE RADIO DEVICE 有权
标题翻译：传输功率控制方法和认知无线电设备的设备
公开(公告)号：US20120100883A1
公开(公告)日：2012-04-26
申请号：US13266931
申请日：2010-04-29
申请人： Sung-Hyun Hwang , Gwangzeen Ko , Chang-Joo Kim , Myung-Sun Song , Jung-Sun Um , Min-Sheo Choi
发明人： Sung-Hyun Hwang , Gwangzeen Ko , Chang-Joo Kim , Myung-Sun Song , Jung-Sun Um , Min-Sheo Choi
IPC分类号： H04W52/04 , H04B7/24
CPC分类号： H04W52/04
摘要： A method and an apparatus for controlling transmit power of a CR device are provided. The method includes acquiring CR environment information regarding a licensed user or an unlicensed user occupying an adjacent channel or an adjacent cell of the CR device; determining a transmit power value of the CR device using the CR environment information; and generating transmit power control information including the transmit power value. The method and apparatus guarantee reliable communication of the CR device and minimize interference with the licensed user.
摘要翻译：提供了一种用于控制CR设备的发射功率的方法和装置。该方法包括获取关于许可用户或占用CR设备的相邻信道或相邻小区的未许可用户的CR环境信息; 使用所述CR环境信息确定所述CR设备的发射功率值; 以及生成包括发送功率值的发送功率控制信息。该方法和装置保证了CR设备的可靠通信，并最大限度地减少与许可用户的干扰。

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