公开(公告)号：US09591654B2

公开(公告)日：2017-03-07

申请号：US14288477

申请日：2014-05-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong Hun Lee ,  Kyu Min Kang ,  Jae Cheol Park ,  Byung Jang Jeong ,  Jae Ick Choi

IPC: H04W72/08 ,  H04W24/02 ,  H04W84/04 ,  H04W72/04

CPC classification number: H04W72/082 ,  H04W24/02 ,  H04W72/0426 ,  H04W84/045

Abstract: Disclosed are a wireless communication apparatus for reducing interference by a neighboring cell, and a method of reducing interference thereof. The method of reducing interference by a wireless communication apparatus includes: determining a neighboring small cell from one or more surrounding small cells adjacent to a small cell; allocating a communication resource to one or more users according to a channel state of the one or more users subscribing to the small cell; and transmitting data to the one or more users, to which the communication resource is allocated, by adopting one or more interference reducing methods for reducing interference by the neighboring small cell.

Abstract translation: 公开了一种用于减少相邻小区的干扰的无线通信装置，以及减少其干扰的方法。 减少无线通信装置的干扰的方法包括：从与小小区相邻的一个或多个周围的小小区确定相邻小小区; 根据订阅小单元的一个或多个用户的信道状态向一个或多个用户分配通信资源; 以及通过采用一种或多种减少干扰的方法来传送数据给所述通信资源被分配给的一个或多个用户，以减少相邻小小区的干扰。

公开(公告)号：US09479942B2

公开(公告)日：2016-10-25

申请号：US14599733

申请日：2015-01-19

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sang In Cho ,  Kyu Min Kang ,  Jae Cheol Park ,  Byung Jang Jeong

IPC: H04B1/00 ,  H04W16/18

CPC classification number: H04W16/18

Abstract: Disclosed is a method for calculating a radio coverage in a wireless device for calculating a protective distance so as not to allow a secondary user sharing a frequency with a primary user to have an effect of radio interference on the primary user, the method including: calculating a transmission power of a wireless signal transmitted through the frequency by the secondary user; determining a region affected by the wireless signal based on the transmission power of the secondary user; calculating an average ground clearance of the determined region; calculating a height of an installation place of an antenna of the secondary user from the average ground clearance; and calculating the height of the antenna from the average ground clearance by adding a length of the antenna of the secondary user to the calculated height and calculating the radio coverage based on the height from the average ground clearance.

Abstract translation: 公开了一种用于计算无线设备中用于计算保护距离的无线电覆盖的方法，以便不允许与主用户共享频率的次要用户对主用户具有无线电干扰的影响，该方法包括：计算 通过次要用户通过频率发送的无线信号的发送功率; 基于所述次要用户的发送功率来确定受所述无线信号影响的区域; 计算确定区域的平均离地间隙; 从平均离地间隙计算二次用户的天线的安装位置的高度; 以及通过将所述次要用户的天线的长度与计算出的高度相加来计算所述天线的高度，并且基于距所述平均离地间隙的高度计算所述无线电覆盖。

公开(公告)号：US09473180B2

公开(公告)日：2016-10-18

申请号：US14946255

申请日：2015-11-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kyu Min Kang ,  Seung Keun Park ,  Jae Cheol Park ,  Jung Sun Um

IPC: H04B1/04 ,  H04B1/16 ,  H04L27/12 ,  H03K7/06

CPC classification number: H04B1/04 ,  H03B21/01 ,  H03K7/06 ,  H04L27/12

Abstract: Disclosed is an apparatus for converting a frequency. The apparatus includes: an oscillator configured to generate a first oscillation signal having a first oscillation frequency which is obtained by subtracting an input frequency from a carrier frequency of any one carrier signal among a first to a n-th carrier signals (n is a natural number), and generate a second oscillation signal having a second oscillation frequency which is obtained by adding the input frequency to a carrier frequency of any one carrier signal among a (n+1)-th to a 2n-th carrier signals; and a mixer configured to mix and output the first oscillation signal or the second oscillation signal with an input signal having the input frequency.

Abstract translation: 公开了一种用于转换频率的装置。 该装置包括：振荡器，被配置为产生具有第一振荡频率的第一振荡信号，所述第一振荡频率通过从第一至第n载波信号中的任何一个载波信号的载波频率中减去输入频率而获得（n是自然的 并且生成具有第二振荡频率的第二振荡信号，所述第二振荡频率通过将输入频率与第（n + 1）至第2n载波信号中的任何一个载波信号的载波频率相加而获得; 以及混频器，被配置为利用具有输入频率的输入信号混合并输出第一振荡信号或第二振荡信号。

公开(公告)号：US09002353B2

公开(公告)日：2015-04-07

申请号：US13898863

申请日：2013-05-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kyu Min Kang ,  Sang In Cho ,  Jae Cheol Park ,  Byung Jang Jeong

IPC: H04W48/16

CPC classification number: H04W16/14 ,  H04W72/06

Abstract: Disclosed are an apparatus and a method of calculating available channels considering a priority in a TVWS. An apparatus for calculating available channels considering a priority in a TVWS according to the present invention includes: a communication module configured to receive a request for information on usable available channels from a TV Band Device (TVBD); an available channel calculation unit configured to calculate one or more available channels usable by the TVBD based on one or more predetermined reference parameters according to the request; a priority assignment unit configured to assign a priority to each of the calculated available channels, generate an available channel list including the available channels to which the priorities are assigned, and provide the TVBD with the generated available channel list; and a database configured to store the available channels, to which the priorities are assigned, calculated for each TVBD.

Abstract translation: 公开了考虑TVWS中的优先级来计算可用信道的装置和方法。 根据本发明的考虑TVWS中的优先级的可用信道的计算装置包括：通信模块，被配置为从TV频带设备（TVBD）接收关于可用可用信道的信息的请求; 可用信道计算单元，被配置为根据所述请求计算基于一个或多个预定参考参数的TVBD可用的一个或多个可用信道; 优先级分配单元，被配置为向每个所计算的可用信道分配优先级，生成包括优先级被分配到的可用信道的可用信道列表，并向TVBD提供生成的可用信道列表; 以及被配置为存储为每个TVBD计算优先级被分配到的可用信道的数据库。