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公开(公告)号：US10568144B2
公开(公告)日：2020-02-18
申请号：US15954422
申请日：2018-04-16
Inventor： Seong Chul Cho , Hyung Jin Kim , Gweon Do Jo
Abstract: A random access preamble detection method of a base station includes removing a cyclic prefix (CP) from a received signal, detecting a plurality of first symbols corresponding to a plurality of first subcarriers included in an uplink available resource from the received signal with the CP removed, measuring reception power of the first symbol corresponding to each of a plurality of second subcarriers allocated to a random access channel among the plurality of first subcarriers, accumulating reception power with respect to each of the plurality of second subcarriers according to a predetermined frequency hopping pattern, and upon completely accumulating reception power according to the frequency hopping pattern, detecting a preamble sequence using each accumulated value of reception power of each of the plurality of second subcarriers.
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公开(公告)号：US10038479B2
公开(公告)日：2018-07-31
申请号：US15597286
申请日：2017-05-17
Inventor： Seok Seo , Hyung Jin Kim , Jae Su Song , Jung Hoon Oh , Seong Chul Cho
CPC classification number: H04B7/0417 , H04B7/088 , H04L1/0631 , H04L25/0204 , H04L25/0256 , H04W72/0446 , H04W72/046
Abstract: A receiving device and method using a single RF chain includes a reception antenna module radiating a plurality of orthogonal beam patterns to receive a signal, a single RF chain processing a reception signal from the reception antenna module, a signal component extracting unit extracting a reception signal component corresponding to each beam pattern using the reception signal received through the reception antenna module and the single RF chain and a code value previously allocated to the plurality of beam patterns, and a beam pattern controller controlling a beam pattern radiated by the reception antenna module.
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公开(公告)号：US09577737B2
公开(公告)日：2017-02-21
申请号：US15061218
申请日：2016-03-04
Inventor： Jae Su Song , Seok Seo , Yun Hee Cho , Seung Hwan Lee , Seong Chul Cho
CPC classification number: H04B7/086 , H01Q3/446 , H01Q19/32 , H01Q21/205 , H04B7/0491 , H04B7/0848
Abstract: Provided is an antenna apparatus equipped with a single RF chain. The antenna apparatus includes: a combiner configured to divide omnidirectional space into N sectors to perform a sector sweep, combine a reception signal received via the single RF chain for each sector and calculate a gain of a composite signal; a comparator configured to determine a gain magnitude of the composite signal; and a controller configured to perform a beam-forming according to a comparison result of the gain magnitude of the comparator.
Abstract translation: 提供了配备有单个RF链的天线装置。 天线装置包括：组合器，被配置为将全向空间划分成N个扇区以执行扇区扫描，组合经由每个扇区经由单个RF链接收的接收信号，并计算复合信号的增益; 比较器，被配置为确定复合信号的增益幅度; 以及控制器，被配置为根据比较器的增益幅度的比较结果来执行波束形成。
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4.发明授权公开(公告)号：US09154195B2
公开(公告)日：2015-10-06
申请号：US14041632
申请日：2013-09-30
Inventor： Juyul Lee , Keun Young Kim , Seong Chul Cho , Seung-Hwan Lee
CPC classification number: H04B7/026 , H04B7/0426 , H04B7/0452 , H04B7/0617
Abstract: A method of connecting base stations by a one-way cooperative channel forming a beam is provided. Since it is possible to determine directions of beams and to distribute power components by small amounts of calculations, it is possible to realize the base stations in a one-way cooperative situation with small expenses. In addition, the base stations according to the exemplary embodiment of the present invention may minimize the influence of interference generated by signals transmitted by other base stations through the one-way cooperative channel and the influence of interference generated by signals transmitted to other terminals.
Abstract translation: 提供了一种通过形成光束的单向协作通道来连接基站的方法。 由于可以通过少量的计算来确定波束的方向和分配功率分量，所以可以以小的费用在单向协作状态下实现基站。 此外，根据本发明的示例性实施例的基站可以最小化由其他基站通过单向协作信道发送的信号产生的干扰的影响以及由发送到其他终端的信号产生的干扰的影响。
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