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公开(公告)号：US09907093B2
公开(公告)日：2018-02-27
申请号：US14982305
申请日：2015-12-29
Inventor： Juho Park , Young Seog Song , Jun Hwan Lee , Eun-Young Choi , Young Jo Ko , Seung Chan Bang
CPC classification number: H04W74/0833 , H04W72/0453 , H04W72/046
Abstract: In a communications system using a plurality of beams, a terminal determines a beam to be communicated with the terminal among the plurality of beams, determines one sequence among sequences allocated to the determined beam as a beam based random access preamble, and transmits the beam based random access preamble through the determined beam. In addition, if a random access response for the beam based random access preamble is not received from a base station for a set interval, the terminal determines one sequence among sequences in a cell based random access preamble collection as a cell based random access preamble and transmits the cell based random access preamble.
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公开(公告)号：US09144064B2
公开(公告)日：2015-09-22
申请号：US13657409
申请日：2012-10-22
Inventor： Kap Seok Chang , Il Gyu Kim , Hyeong Geun Park , Young Jo Ko , Hyo Seok Yi , Chan Bok Jeong , Young Hoon Kim , Seung Chan Bang
CPC classification number: H04W48/16 , H04B1/70735 , H04B7/2656 , H04J11/0069 , H04L7/043 , H04L27/2613 , H04L27/2655 , H04W56/00 , H04W72/042 , H04W72/0446 , H04W88/08
Abstract: A method is provided for searching for a cell in a mobile station. The method includes receiving a downlink frame including a primary synchronization signal and a secondary synchronization signal. The secondary synchronization signal contains cell identity group information and the primary synchronization signal contains cell identity information within a cell identity group. The method also includes searching for a cell using the cell identity group information in the secondary synchronization signal and the cell identity information in the primary synchronization sign.
Abstract translation: 提供了一种用于在移动台中搜索小区的方法。 该方法包括接收包括主同步信号和次同步信号的下行链路帧。 次同步信号包含小区标识组信息，并且主同步信号包含小区标识组内的小区标识信息。 该方法还包括使用次同步信号中的小区标识组信息和主同步符号中的小区标识信息来搜索小区。
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公开(公告)号：US08982911B2
公开(公告)日：2015-03-17
申请号：US13672041
申请日：2012-11-08
Inventor： Kap Seok Chang , Il Gyu Kim , Hyeong Geun Park , Young Jo Ko , Hyo Seok Yi , Moon Sik Lee , Young Hoon Kim , Seung Chan Bang
CPC classification number: H04W56/00 , H04J11/0069 , H04J11/0076 , H04L25/03866 , H04L27/2613 , H04L27/2655 , H04L27/2656 , H04L27/2657 , H04L27/2662
Abstract: The present invention relates to a method for generating a downlink frame including generating a first short sequence and a second short sequence indicating cell group information, generating a first scrambling sequence determined by the first synchronization signal, generating a second scrambling sequence determined by the first short sequence, scrambling the first short sequence with the first scrambling sequence, scrambling the second short sequence with at least the second scrambling sequence, and mapping a second synchronization signal including the scrambled first short sequence and the scrambled second short sequence in the frequency domain.
Abstract translation: 本发明涉及一种生成下行链路帧的方法，包括生成指示小区组信息的第一短序列和第二短序列，产生由第一同步信号确定的第一加扰序列，产生由第一短序列确定的第二加扰序列 用第一加扰序列加扰第一短序列，用至少第二加扰序列对第二短序列进行加扰，以及在频域中映射包括加扰的第一短序列和加扰的第二短序列的第二同步信号。
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34.发明授权公开(公告)号：US08611249B2
公开(公告)日：2013-12-17
申请号：US13709595
申请日：2012-12-10
Inventor： Young Jo Ko , Bang Won Seo , Jae Young Ahn
IPC: H04W4/00
CPC classification number: H04W72/042 , H04L1/0045 , H04L1/0061 , H04L5/001 , H04L5/0053 , H04W4/00 , H04W72/046 , H04W88/02 , H04W88/08
Abstract: Data transmission and reception is provided by configuring control channels in a wireless communication system using a plurality of carriers. User equipment (UE) may monitor physical downlink control channel (PDCCH) candidates within common search spaces (CSSs) and User Equipment-specific search spaces (USSs). If the UE is configured with cross-carrier scheduling, when two PDCCH candidates originating from a CSS and a USS, respectively, have cyclic redundancy check (CRC) scrambled by the same Radio Network Temporary Identifier (RNTI) and have a common payload size and the same first control channel element (CCE) index, the UE may interpret that only the PDCCH originating from the CSS is transmitted, thereby solving ambiguity of downlink control information (DCI) detection.
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公开(公告)号：US12232109B2
公开(公告)日：2025-02-18
申请号：US18204522
申请日：2023-06-01
Inventor： Cheul Soon Kim , Gi Yoon Park , Seung Kwon Baek , Young Jo Ko
IPC: H04W4/00 , H04W72/0446 , H04W72/1268
Abstract: Disclosed are a method and an apparatus for uplink transmission in a communication system. An operation method of a terminal includes: receiving, from a base station, first SFI information indicating n flexible symbol(s); receiving, from the base station, second SFI information re-indicating m symbol(s) of the n flexible symbol(s) as uplink (UL) symbol(s); and transmitting an SRS to the base station through the m symbol(s) re-indicated as a UL symbol among the n flexible symbol(s) indicated as a flexible symbol. Therefore, performance of the communication system can be improved.
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Patent Agency Ranking
公开(公告)号：US12107781B2
公开(公告)日：2024-10-01
申请号：US14687448
申请日：2015-04-15
Inventor： Byung Jang Jeong , Young Jo Ko , Bang Won Seo , Jae Young Ahn
CPC classification number: H04L5/0048 , H04L5/0007 , H04L27/2607 , H04W72/21
Abstract: Disclosed is a method for generating and transmitting a reference signal in a clustered DFT-spread OFDM transmission scheme. A method for generating and transmitting a DM-RS in a clustered DFT-spread-OFDM scheme comprises: a step of generating DM-RS sequences corresponding to the number of clusters allocated for an uplink transmission; and a step of mapping the generated DM-RS sequences to the relevant DM-RS symbol positions for each cluster. Accordingly, the method for generating and transmitting a reference signal according to the present invention, in which DM-RS sequences are allocated and transmitted on a cluster basis, uses a complete DM-RS sequence for each cluster, and therefore inter-cell interference can be weakened, and problems which might occur when applied to a multi-user MIMO (MU-MIMO) scheme can be solved.
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公开(公告)号：US11533097B2
公开(公告)日：2022-12-20
申请号：US16857864
申请日：2020-04-24
Inventor： Young Jo Ko , Seok Ki Kim , Seung Kwon Baek , Woo Ram Shin , Chan Ho Yoon
IPC: H04B7/06 , H04B17/336 , H04L5/00 , H04W24/10 , H04L1/00
Abstract: An operation method of a terminal may comprise receiving, from a base station, information of target transmission points targeted for a report of first channel state information (CSI) among the plurality of transmission points; receiving a first CSI-reference signal (CSI-RS) from the target transmission points; transmitting the first CSI determined based on the first CSI-RS to the base station; receiving, from the base station, information on a first transmission point determined based on the first CSI; receiving, from the first transmission point indicated by the information on the first transmission point, a second CSI-RS; receiving, from the base station, information on a requirement; and transmitting, to the base station, a second CSI including a transmission parameter for achieving the requirement.
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公开(公告)号：US11425633B2
公开(公告)日：2022-08-23
申请号：US16530994
申请日：2019-08-02
Inventor： Kap Seok Chang , Il Gyu Kim , Hyeong Geun Park , Young Jo Ko , Hyo Seok Yi , Chan Bok Jeong , Young Hoon Kim , Seung Chan Bang
IPC: H04W48/16 , H04B7/26 , H04J11/00 , H04L27/26 , H04L7/04 , H04W72/04 , H04W56/00 , H04B1/7073 , H04W88/08
Abstract: The present application relates to a method of generating a downlink frame. The method of generating the downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence and a second scrambling sequence determined by the primary synchronization signal; generating a third scrambling sequence determined by the first short sequence and a fourth scrambling sequence determined by the second short sequence; scrambling the short sequences with the respective scrambling sequences; and mapping the secondary synchronization signal that includes the first short sequence scrambled with the first scrambling sequence, the second short sequence scrambled with the second scrambling sequence and the third scrambling sequence, the second short sequence scrambled with the first scrambling sequence and the first short sequence scrambled by the second scrambling sequence and the fourth scrambling sequence to a frequency domain.
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公开(公告)号：US10938534B2
公开(公告)日：2021-03-02
申请号：US16116858
申请日：2018-08-29
Inventor： Young Jo Ko , Tae Gyun Noh , Kyoung Seok Lee , Bang Won Seo , Byung Jang Jeong , Heesoo Lee
Abstract: Provided is a data transmission system using a carrier aggregation. The data transmission system may assign a radio resource based on a correspondence relationship between a downlink and an uplink, and may transmit data using the assigned radio resource.
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公开(公告)号：US10893525B2
公开(公告)日：2021-01-12
申请号：US16398306
申请日：2019-04-30
Inventor： Tae Gyun Noh , Young Jo Ko , Bang Won Seo , Jae Young Ahn
Abstract: A method of transmitting and receiving a control channel in a wireless communication system is provided. A base station allocates a data channel to a radio resource, adds start position information of the data channel into a payload of a control channel, and performs signaling for indication information on the start position information added into the payload of the control channel to a terminal. Accordingly, the legacy system and the enhanced system can efficiently transmit a control channel.
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