公开(公告)号：US20090117914A1

公开(公告)日：2009-05-07

申请号：US12039901

申请日：2008-02-29

申请人： Tae Soo KWON ,  Hyun Gi AHN ,  Tae In HYON ,  Kyung Hun JANG ,  In Sun LEE ,  Youngsoo KIM ,  Hyo Sun HWANG ,  Hyun Ho CHOI

发明人： Tae Soo KWON ,  Hyun Gi AHN ,  Tae In HYON ,  Kyung Hun JANG ,  In Sun LEE ,  Youngsoo KIM ,  Hyo Sun HWANG ,  Hyun Ho CHOI

IPC分类号： H04Q7/22

CPC分类号： H04W16/14

摘要： An operation method of a radio communication station is provided. The operation method of a radio communication station, the operation method including: transmitting a basic pilot signal to at least one terminal located in a coverage of a preoccupied system; and transmitting a cognitive radio (CR) pilot signal.

摘要翻译： 提供无线电通信站的操作方法。 一种无线电通信站的操作方法，所述操作方法包括：向位于所关注系统的覆盖范围内的至少一个终端发送基本导频信号; 以及发送认知无线电（CR）导频信号。

公开(公告)号：US20080032696A1

公开(公告)日：2008-02-07

申请号：US11869194

申请日：2007-10-09

申请人： Hyun Ho CHOI ,  In Sun Lee ,  Hyo Sun HWANG ,  Yoon Chae CHEONG ,  Tae In Hyon ,  Kyung Hun Jang ,  Young Soo Kim

发明人： Hyun Ho CHOI ,  In Sun Lee ,  Hyo Sun HWANG ,  Yoon Chae CHEONG ,  Tae In Hyon ,  Kyung Hun Jang ,  Young Soo Kim

IPC分类号： H04Q7/20

CPC分类号： H01L29/86 ,  H01L23/5228 ,  H01L2924/0002 ,  H04W36/08 ,  H04W88/08 ,  H04W88/18 ,  H01L2924/00

摘要： Handover in a mobile communication system, and more particularly, an apparatus and method that can broadcast handover information to a particular region using beamforming is provided. An apparatus for storing handover information in a mobile communication system includes: an estimation unit to estimate a direction of arrival (DOA) of a received signal with respect to a first base station based on the received signal, wherein the received signal is received from a terminal belonging to the first base station; and a storage unit to store the estimated DOA as handover information associated with a second base station when the terminal is handed over to the second base station. According to aspects of the present invention, a number of neighboring base stations that a terminal needs to search to perform handover may be reduced. Therefore, the terminal may perform handover more quickly and a communication disconnection time may be reduced.

摘要翻译： 提供了一种移动通信系统中的切换，更具体地，提供了可以使用波束成形来广播切换信息到特定区域的装置和方法。 一种用于在移动通信系统中存储切换信息的装置，包括：估计单元，用于基于接收到的信号来估计接收信号相对于第一基站的到达方向（DOA），其中从 终端属于第一基站; 以及存储单元，当终端被切换到第二基站时，将估计的DOA存储为与第二基站相关联的切换信息。 根据本发明的方面，可以减少终端需要搜索执行切换的多个相邻基站。 因此，终端可以更快地执行切换，并且可以减少通信断开时间。

公开(公告)号：US20090124206A1

公开(公告)日：2009-05-14

申请号：US12038995

申请日：2008-02-28

申请人： Tae Soo KWON ,  In Sun LEE ,  Hyo Sun HWANG ,  Youngsoo KIM ,  Hyun Ho CHOI ,  Young Hoon LEE ,  Young Chul SUNG ,  Hee Jung YU ,  Young Seok OH

发明人： Tae Soo KWON ,  In Sun LEE ,  Hyo Sun HWANG ,  Youngsoo KIM ,  Hyun Ho CHOI ,  Young Hoon LEE ,  Young Chul SUNG ,  Hee Jung YU ,  Young Seok OH

IPC分类号： H04B15/00

CPC分类号： H04W52/325 ,  H04B17/336 ,  H04W52/223

摘要： A pilot signal power control apparatus to determine a power level of a pilot signal of a primary network to indicate an availability of a wireless resource of thereof to a secondary user of a secondary network according to a cognitive radio technology, the pilot signal power control apparatus and an operation method thereof, the pilot signal power control apparatus including: a prediction unit to predict a noise increase and/or a sensing probability, the noise increase occurring in a primary user of the primary network due to a channel estimation error, and the sensing probability being a probability that a secondary user senses the pilot signal of; a channel capacity calculation unit to calculate a channel capacity of the primary user based on the predicted noise increase and/or sensing probability; and a power level determination unit to determine the power level of the pilot signal using the calculated channel capacity.

摘要翻译： 一种导频信号功率控制装置，用于根据认知无线电技术确定主网络的导频信号的功率电平，以指示辅助网络的辅助用户的无线资源的可用性，所述导频信号功率控制装置 导频信号功率控制装置包括：预测单元，用于预测噪声增加和/或感测概率，由于信道估计误差而在主网络的主要用户中发生的噪声增加，以及 感测概率是次要用户感测导频信号的概率; 信道容量计算单元，用于基于预测的噪声增加和/或感测概率来计算主用户的信道容量; 以及功率电平确定单元，用于使用所计算的信道容量来确定导频信号的功率电平。

公开(公告)号：US20090082057A1

公开(公告)日：2009-03-26

申请号：US12034125

申请日：2008-02-20

申请人： Hyo Sun HWANG ,  Sunghyun Choi ,  Tae In Hyon ,  Young Soo Kim ,  Hyun Gi Ahn ,  Kwanghun Han ,  Hyun Ho Choi ,  Hyewon Lee

发明人： Hyo Sun HWANG ,  Sunghyun Choi ,  Tae In Hyon ,  Young Soo Kim ,  Hyun Gi Ahn ,  Kwanghun Han ,  Hyun Ho Choi ,  Hyewon Lee

IPC分类号： H04B7/005

CPC分类号： H04W52/243 ,  H04W52/242 ,  H04W52/248

摘要： A cognitive radio terminal device. The cognitive radio terminal device comprises an available radio resource determination unit to determine an available radio resource from among up-link radio resources assigned to an up-link communication in a primary network, and an ad hoc communication performing unit to perform an ad hoc communication in a secondary network by using the available radio resource.

摘要翻译： 认知无线电终端设备。 认知无线终端装置包括：可用无线电资源确定单元，用于从分配给主网络中的上行链路通信的上行链路无线电资源中确定可用的无线电资源;以及自组织通信执行单元，用于执行自组织通信 通过使用可用的无线电资源在次要网络中。

公开(公告)号：US20090052512A1

公开(公告)日：2009-02-26

申请号：US12034959

申请日：2008-02-21

申请人： Young Soo KIM ,  Kyung Hun JANG ,  In Sun LEE ,  Jung Woo LEE ,  Hyo Sun HWANG ,  Hyun Gi AHN ,  Chan Hong KIM

发明人： Young Soo KIM ,  Kyung Hun JANG ,  In Sun LEE ,  Jung Woo LEE ,  Hyo Sun HWANG ,  Hyun Gi AHN ,  Chan Hong KIM

IPC分类号： H04B17/00 ,  H04B1/10

CPC分类号： H04B7/01

摘要： A link adaptation system using a Doppler frequency is provided. The link adaptation system includes: a Doppler frequency estimation unit to estimate a Doppler frequency of a signal transmitted via a wireless channel; a Signal to Noise Ratio (SNR) measurement interval determination unit to determine an SNR measurement interval of the signal transmitted via the wireless channel based on the estimated Doppler frequency; and an SNR measurement unit to measure an SNR of the signal based on the determined SNR measurement interval.

摘要翻译： 提供了使用多普勒频率的链路自适应系统。 链路适配系统包括：多普勒频率估计单元，用于估计经由无线信道发送的信号的多普勒频率; 信噪比测量间隔确定单元，用于基于估计的多普勒频率确定经由无线信道发送的信号的SNR测量间隔; 以及SNR测量单元，用于基于所确定的SNR测量间隔来测量信号的SNR。

公开(公告)号：US20090190566A1

公开(公告)日：2009-07-30

申请号：US12133469

申请日：2008-06-05

申请人： Tae Soo KWON ,  Hyo Sun HWANG ,  Kyung Hun JANG ,  Hyun Ho CHOI ,  Tae Jin LEE

发明人： Tae Soo KWON ,  Hyo Sun HWANG ,  Kyung Hun JANG ,  Hyun Ho CHOI ,  Tae Jin LEE

IPC分类号： H04J3/00 ,  H04B7/00

CPC分类号： H04W74/02

摘要： A technology that can adaptively control an access mode according to a shared band or an unlicensed band used by an adjacent communication system. An access mode controlling apparatus includes a band recognition unit to recognize a usage rate of an unlicensed band or a shared band that is used by an adjacent communication system of a target communication system; a mode determination unit to determine, as an access mode, any one of a contention access mode and a contention-free access mode, based on the usage rate of the unlicensed band or the shared band; and an information transmitter to transmit mode information associated with the determined access mode to member nodes or a base station of the target communication system.

摘要翻译： 可以根据相邻通信系统使用的共享频带或非许可频段自适应地控制接入模式的技术。 访问模式控制装置包括：频带识别单元，用于识别由目标通信系统的相邻通信系统使用的非许可频带或共享频带的使用率; 模式确定单元，基于所述未许可频带或所述共享频带的使用率，确定竞争接入模式和无竞争接入模式中的任何一个作为接入模式; 以及信息发送器，用于将与确定的接入模式相关联的模式信息发送到目标通信系统的成员节点或基站。

公开(公告)号：US20090310548A1

公开(公告)日：2009-12-17

申请号：US12428833

申请日：2009-04-23

申请人： Tae Soo KWON ,  Hee Jung YU ,  Kyung Hun JANG ,  Young Chul SUNG ,  Hyo Sun HWANG ,  Yong Hoon LEE ,  Young Seok OH

发明人： Tae Soo KWON ,  Hee Jung YU ,  Kyung Hun JANG ,  Young Chul SUNG ,  Hyo Sun HWANG ,  Yong Hoon LEE ,  Young Seok OH

IPC分类号： H04W74/00

CPC分类号： H04W4/20

摘要： An apparatus and a method of performing radio communication are provided. The radio communication apparatus may determine a channel capacity of a radio channel based on a sensing duration to sense the radio channel and a false alarm probability, determine a sensing duration value and a false alarm probability value that maximize the channel capacity, and sense the radio channel based on the determined sensing duration value and the false alarm probability value.

摘要翻译： 提供了一种执行无线电通信的装置和方法。 无线电通信装置可以基于感测持续时间来确定无线电信道的信道容量以感测无线电信道和假警报概率，确定感测持续时间值和使信道容量最大化的假警报概率值，并且感测无线电 基于所确定的感测持续时间值和假警报概率值的信道。

公开(公告)号：US20110014924A1

公开(公告)日：2011-01-20

申请号：US12774759

申请日：2010-05-06

申请人： Hyo Sun HWANG ,  Kyung Hun Jang ,  Hyun Ho Choi

发明人： Hyo Sun HWANG ,  Kyung Hun Jang ,  Hyun Ho Choi

IPC分类号： H04W72/08

CPC分类号： H04W72/082 ,  H04W16/10 ,  H04W16/30

摘要： A system to cooperatively control inter-cell interference is provided. A first frequency allocated to a central area of a serving cell associated with a serving base station may be allocated to a central area of a neighboring cell associated with a neighboring base station. A second frequency allocated to an edge area of the serving cell may be allocated to an edge area of the neighboring cell. Where a terminal is located in the edge of the neighboring cell, scheduling information, channel information, and data may be exchanged between the terminal and the serving base station.

摘要翻译： 提供了协同控制小区间干扰的系统。 分配给与服务基站相关联的服务小区的中心区域的第一频率可以被分配给与相邻基站相关联的相邻小区的中心区域。 分配给服务小区的边缘区域的第二频率可以被分配给相邻小区的边缘区域。 在终端位于相邻小区的边缘的情况下，可以在终端和服务基站之间交换调度信息，信道信息和数据。

公开(公告)号：US20100086010A1

公开(公告)日：2010-04-08

申请号：US12424995

申请日：2009-04-16

申请人： Hyun Ho CHOI ,  Kyung Hun JANG ,  Hyo Sun HWANG

发明人： Hyun Ho CHOI ,  Kyung Hun JANG ,  Hyo Sun HWANG

IPC分类号： H04B1/00 ,  H04W4/00

CPC分类号： H04B1/00 ,  H04W72/02

摘要： A cognitive radio communication device including at least two radio frequency chains is provided. In order to perform a feature detection, the cognitive radio frequency device may reduce or eliminate a quiet time where a data communication is suspended using the at least two RF chains. While one RF chain performs the feature detection, another RF chain may perform the data communication.

摘要翻译： 提供了包括至少两个射频链的认知无线电通信设备。 为了执行特征检测，认知射频设备可以减少或消除使用至少两个RF链暂停数据通信的安静时间。 当一个RF链执行特征检测时，另一个RF链可执行数据通信。

公开(公告)号：US20100150113A1

公开(公告)日：2010-06-17

申请号：US12490136

申请日：2009-06-23

申请人： Hyo Sun HWANG ,  Kyung Hun Jang ,  Youngsoo Kim

发明人： Hyo Sun HWANG ,  Kyung Hun Jang ,  Youngsoo Kim

IPC分类号： H04J3/00

CPC分类号： H04W72/1226 ,  H04W72/0453

摘要： A multi-band scheduling method determines frequency bands for each of a plurality of frames existing in a single session queue from among a plurality of frequency bands based on data characteristics of each of the plurality of frames. In particular, the multi-band scheduling method may assign a frame with a high significance to a frequency band having a superior channel state, thereby increasing communication reliability. Also, a broadcasting service system may use the multi-band scheduling method to effectively provide the broadcasting services.

摘要翻译： 多频带调度方法基于多个帧中的每一个的数据特性，从多个频带中确定存在于单个会话队列中的多个帧中的每一个的频带。 特别地，多频带调度方法可以将具有高重要性的帧分配给具有优良信道状态的频带，从而提高通信可靠性。 此外，广播业务系统可以使用多频带调度方式来有效地提供广播业务。