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公开(公告)号：USRE47661E1
公开(公告)日：2019-10-22
申请号：US16132316
申请日：2018-09-14
Applicant: LG ELECTRONICS INC.
Inventor： Hyun Woo Lee , Min Seok Noh , Yeong Hyeon Kwon , Seung Hee Han , Dong Cheol Kim , Jin Sam Kwak , Dragan Vujcic
Abstract: A method for establishing a cyclic shift sequence to provide against the frequency offset is disclosed. The method calculates a distance between a channel response position of the sequence and an alias channel response position caused by a frequency offset, calculates the number of cyclic shifts per group according to the calculated distance, and establishes the cyclic shift (CS)-applying interval. This method easily establishes a cyclic shift (CS) interval at a specific location having no overlapping by considering a channel response of a reception (Rx) sequence and an alias location of this reception (Rx) sequence, although a reception (Rx) signal is shifted by a channel delay spreading or a propagation delay irrespective of categories of a domain generating a sequence, so that it can greatly reduce the number of the detection errors and the false alarm rate. And, if a sequence of the cyclic shift (CS) is allocated to a cell having a frequency offset of more than a predetermined level, the present invention can minimize the influence of a frequency offset on a high-mobility cell.
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公开(公告)号：US09578660B2
公开(公告)日：2017-02-21
申请号：US15228376
申请日：2016-08-04
Applicant: LG ELECTRONICS INC.
Inventor： Dragan Vujcic , Yeong Hyeon Kwon
CPC classification number: H04W74/0833 , H04J13/0062 , H04W48/12 , H04W74/004 , H04W74/0866
Abstract: A terminal random access procedure is improved by allowing a mobile terminal to correctly map signature indexes onto cyclic shifted Zadoff-Chu (ZC) sequences when the deployed cells support a high-speed mobility by informing a mobile terminal whether a cell supports high-speed mobility.
Abstract translation: 通过允许移动终端通过向移动终端通知移动终端小区是否支持高速移动性，通过允许移动终端将签名索引正确地映射到循环移位的Zadoff-Chu（ZC）序列上而被部署的小区支持高速移动性的终端随机接入过程得到改善 。
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公开(公告)号：US09131474B2
公开(公告)日：2015-09-08
申请号：US14042204
申请日：2013-09-30
Applicant: LG ELECTRONICS INC.
Inventor： Patrick Fischer , Remi Feuillette , Dragan Vujcic
CPC classification number: H04W74/02 , H04J13/0059 , H04J13/0062 , H04L27/2607 , H04W74/004 , H04W74/0833 , H04W74/0866
Abstract: Methods for allocating and choosing dedicated signatures for random access are provided. Options for allocating dedicated signatures include allocating the dedicated signature from the unused space of the random signature root index when there is unused space and allocating more dedicated signatures from the same root index using the same time/frequency resources if additional signatures are needed, and reserving some preambles from the contention-based random access preambles from both sets of preambles. The present invention also proposes that the dedicated signatures be reserved in each of two sets of preambles.
Abstract translation: 提供了分配和选择用于随机存取的专用签名的方法。 用于分配专用签名的选项包括当存在未使用的空间时从随机签名根索引的未使用空间分配专用签名，并且如果需要附加签名则使用相同的时间/频率资源从相同根索引分配更多专用签名，并且保留 来自两组前导码的基于竞争的随机访问前导码的一些前导码。 本发明还提出，在两组前导码中的每一组中保留专用签名。
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公开(公告)号：US08693573B2
公开(公告)日：2014-04-08
申请号：US13791730
申请日：2013-03-08
Applicant: LG Electronics Inc.
Inventor： Hyun Woo Lee , Min Seok Noh , Yeong Hyeon Kwon , Seung Hee Han , Dong Cheol Kim , Jin Sam Kwak , Dragan Vujcic
IPC: H04L27/04
CPC classification number: H04L1/0023 , H04J13/0062 , H04J13/0074 , H04J13/22 , H04L27/2613 , H04L27/2657 , H04W56/00
Abstract: A method for transmitting a random access preamble to a base station includes generating the random access preamble from a Zadoff-Chu (ZC) sequence, wherein the random access preamble is defined by cyclic shift (Cv) of the ZC sequence; and transmitting the random access preamble to the base station.
Abstract translation: 用于向基站发送随机接入前导码的方法包括：从Zadoff-Chu（ZC）序列生成随机接入前同步码，其中随机接入前导码由ZC序列的循环移位（Cv）定义; 以及将所述随机接入前导码发送到所述基站。
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