公开(公告)号：US09450796B2

公开(公告)日：2016-09-20

申请号：US12523125

申请日：2008-01-04

Applicant: Moon-Sik Lee ,  Hye-Kyung Jwa ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

Inventor： Moon-Sik Lee ,  Hye-Kyung Jwa ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC: H04L27/00 ,  H04L27/26

CPC classification number: H04L27/2607 ,  H04L69/323 ,  H04W74/006

Abstract: Provided is a method of forming a random access preamble structure for an extended cell radius in a cellular system, the method including: generating a cyclic prefix (CP), which is the sum of a maximum delay spread and the maximum round trip delay according to the extended cell; generating a preamble sequence part. The method is used to form a preamble structure for an extended cell radius from among random access preamble structures transmitted when initial synchronization is achieved, when synchronization is lost, or when a handover is performed, during a random access process of the cellular system.

Abstract translation: 提供了一种在蜂窝系统中形成用于扩展小区半径的随机接入前导码结构的方法，所述方法包括：根据根据本发明的方法，生成循环前缀（CP），其是最大延迟扩展和最大往返延迟之和 扩展单元格 生成前导序列部分。 该方法用于在实现初始同步时，当同步丢失时，或者当在蜂窝系统的随机接入过程中执行切换时，从发送的随机接入前同步码结构中形成用于扩展小区半径的前导码结构。

公开(公告)号：US08295152B2

公开(公告)日：2012-10-23

申请号：US12664480

申请日：2008-06-16

Applicant: Young-Jo Ko ,  Hyeong-Geun Park ,  Il-Gyu Kim ,  Kapseok Chang ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

Inventor： Young-Jo Ko ,  Hyeong-Geun Park ,  Il-Gyu Kim ,  Kapseok Chang ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC: H04W4/00 ,  H04J1/00

CPC classification number: H04L5/0016 ,  H04J13/0074 ,  H04L5/0017 ,  H04L5/0019 ,  H04L5/0021 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0055

Abstract: Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly use time and frequency resources for efficient code hopping. The method includes allocating the same frequency-axis sequence and different time-axis sequences to a plurality of terminals by using a resource index according to a first slot in the first slot; and allocating different frequency-axis sequences and different time-axis sequences to the plurality of terminals by using a resource index according to a second slot in the second slot.

Abstract translation: 提供了一种在无线通信系统中形成信号的方法，其中多个终端通常使用用于有效跳码的时间和频率资源。 该方法包括通过使用根据第一时隙中的第一时隙的资源索引向多个终端分配相同的频率轴序列和不同的时间轴序列; 以及通过使用根据所述第二时隙中的第二时隙的资源索引，向所述多个终端分配不同的频率轴序列和不同的时间轴序列。

公开(公告)号：US20090232125A1

公开(公告)日：2009-09-17

申请号：US12162237

申请日：2007-07-25

Applicant: Il-Gyu Kim ,  Hyeong-Geun Park ,  Young-Jo Ko ,  Kapseok Chang ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

Inventor： Il-Gyu Kim ,  Hyeong-Geun Park ,  Young-Jo Ko ,  Kapseok Chang ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC: H04J3/06 ,  H04L27/28

CPC classification number: H04W56/001 ,  H04J11/0069 ,  H04J11/0093 ,  H04L5/0037 ,  H04L5/005 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2675 ,  H04W36/0061 ,  H04W36/08 ,  H04W56/00

Abstract: In a cellular system in which OFDM is used, a forward link synchronization channel, a common pilot channel structure, an initial cell searching method of a mobile station, and an adjacent cell searching method for handover are required.A method of transmitting a forward synchronization signal in a wireless communication system according to the present invention includes generating a frame comprised of a plurality of sync blocks; and transmitting the frame through a forward link, wherein the frame comprises primary synchronization channel sequences which provide timing information of the sync blocks and a plurality of secondary synchronization channel sequences which provide timing information of the frame, wherein a cell identifier is specified by a combination of the primary synchronization channel sequence and a hopping code word specified by the plurality of the secondary synchronization channel sequences. Therefore, the cell searching time can be efficiently reduced in an OFDM system.

Abstract translation: 在使用OFDM的蜂窝系统中，需要前向链路同步信道，公共导频信道结构，移动台的初始小区搜索方法以及切换用的相邻小区搜索方法。 根据本发明的在无线通信系统中发送正向同步信号的方法包括：生成由多个同步块组成的帧; 并且通过前向链路发送所述帧，其中所述帧包括提供所述同步块的定时信息的主同步信道序列和提供所述帧的定时信息的多个次同步信道序列，其中小区标识符由组合 的主同步信道序列和由多个次同步信道序列指定的跳频码字。 因此，可以在OFDM系统中有效地减少小区搜索时间。

公开(公告)号：US20130010770A1

公开(公告)日：2013-01-10

申请号：US13617679

申请日：2012-09-14

Applicant: Il-Gyu KIM ,  Hyeong-Geun PARK ,  Young-Jo KO ,  Kapseok CHANG ,  Hyoseok YI ,  Young-Hoon KIM ,  Seung-Chan BANG

Inventor： Il-Gyu KIM ,  Hyeong-Geun PARK ,  Young-Jo KO ,  Kapseok CHANG ,  Hyoseok YI ,  Young-Hoon KIM ,  Seung-Chan BANG

IPC: H04W56/00

CPC classification number: H04W56/001 ,  H04J11/0069 ,  H04J11/0093 ,  H04L5/0037 ,  H04L5/005 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2675 ,  H04W36/0061 ,  H04W36/08 ,  H04W56/00

Abstract: A method of and an apparatus therefor searching a cell in a mobile station of a communication system in which a plurality of cells are grouped into a plurality of cell groups, and each cell group includes at least two cells. The method includes detecting a primary synchronization signal and a secondary synchronization signal from a received signal, and identifying a cell based on a combination of the primary synchronization signal and the secondary synchronization signal. The secondary synchronization signal is related to the cell group to which the mobile station belongs and the primary synchronization signal is related to the cell to which the mobile station belongs within the cell group.

公开(公告)号：US08311031B2

公开(公告)日：2012-11-13

申请号：US13036787

申请日：2011-02-28

Applicant: Il-Gyu Kim ,  Hyeong-Geun Park ,  Young-Jo Ko ,  Kapseok Chang ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

Inventor： Il-Gyu Kim ,  Hyeong-Geun Park ,  Young-Jo Ko ,  Kapseok Chang ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC: H04J3/06

CPC classification number: H04W56/001 ,  H04J11/0069 ,  H04J11/0093 ,  H04L5/0037 ,  H04L5/005 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2675 ,  H04W36/0061 ,  H04W36/08 ,  H04W56/00

Abstract: A method of and an apparatus therefor searching a cell in a mobile station of a communication system in which a plurality of cells are grouped into a plurality of cell groups, and each cell group includes at least two cells. The method includes detecting a primary synchronization signal and a secondary synchronization signal from a received signal, and identifying a cell based on a combination of the primary synchronization signal and the secondary synchronization signal. The secondary synchronization signal is related to the cell group to which the mobile station belongs and the primary synchronization signal is related to the cell to which the mobile station belongs within the cell group.

Abstract translation: 一种用于搜索其中多个小区被分组成多个小区组的通信系统的移动站中的小区的方法和装置，并且每个小区组包括至少两个小区。 该方法包括从接收信号检测主同步信号和次同步信号，以及基于主同步信号和次同步信号的组合来识别小区。 次同步信号与移动站所属的小区组相关，主同步信号与移动站所属小区相关。

公开(公告)号：US07969964B2

公开(公告)日：2011-06-28

申请号：US12162237

申请日：2007-07-25

Applicant: Il-Gyu Kim ,  Hyeong-Geun Park ,  Young-Jo Ko ,  Kapseok Chang ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

Inventor： Il-Gyu Kim ,  Hyeong-Geun Park ,  Young-Jo Ko ,  Kapseok Chang ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC: H04J3/06

CPC classification number: H04W56/001 ,  H04J11/0069 ,  H04J11/0093 ,  H04L5/0037 ,  H04L5/005 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2675 ,  H04W36/0061 ,  H04W36/08 ,  H04W56/00

Abstract: In a cellular system in which OFDM is used, a forward link synchronization channel, a common pilot channel structure, an initial cell searching method of a mobile station, and an adjacent cell searching method for handover are required.A method of transmitting a forward synchronization signal in a wireless communication system according to the present invention includes generating a frame comprised of a plurality of sync blocks; and transmitting the frame through a forward link, wherein the frame comprises primary synchronization channel sequences which provide timing information of the sync blocks and a plurality of secondary synchronization channel sequences which provide timing information of the frame, wherein a cell identifier is specified by a combination of the primary synchronization channel sequence and a hopping code word specified by the plurality of the secondary synchronization channel sequences. Therefore, the cell searching time can be efficiently reduced in an OFDM system.

Abstract translation: 在使用OFDM的蜂窝系统中，需要前向链路同步信道，公共导频信道结构，移动台的初始小区搜索方法以及切换用的相邻小区搜索方法。 根据本发明的在无线通信系统中发送正向同步信号的方法包括：生成由多个同步块组成的帧; 并且通过前向链路发送所述帧，其中所述帧包括提供所述同步块的定时信息的主同步信道序列和提供所述帧的定时信息的多个次同步信道序列，其中小区标识符由组合 的主同步信道序列和由多个次同步信道序列指定的跳频码字。 因此，可以在OFDM系统中有效地减少小区搜索时间。

公开(公告)号：US08817770B2

公开(公告)日：2014-08-26

申请号：US12425813

申请日：2009-04-17

Applicant: Il-Gyu Kim ,  Hyeong-Geun Park ,  Young-Jo Ko ,  Kapseok Chang ,  Hyoseok Yi ,  Jun-Hwan Lee ,  Young-Hoon Kim ,  Seung-Chan Bang

Inventor： Il-Gyu Kim ,  Hyeong-Geun Park ,  Young-Jo Ko ,  Kapseok Chang ,  Hyoseok Yi ,  Jun-Hwan Lee ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC: H04J3/06 ,  H04J11/00 ,  H04L27/26

CPC classification number: H04J11/0069 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0228 ,  H04L25/03866 ,  H04L27/261 ,  H04L27/2613 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2675 ,  H04W56/0085 ,  Y02D70/00 ,  Y02D70/1262

Abstract: Provided are a sync channel of a forward link, a common pilot channel structure, and an initial cell search method and an adjacent cell search method for handover in a cellular system using orthogonal frequency division multiplexing (OFDM). A cell search method in an OFDM cellular system in which a primary sync channel and a secondary sync channel are configured based on time division multiplexing (TDM) includes acquiring sync block synchronization and a primary sync channel sequence number using a primary sync channel symbol included in a frame received by a terminal, detecting a boundary of the frame and a scrambling code group using the sync block and a secondary sync channel symbol included in the frame received by the terminal, and acquiring a scrambling code using the primary sync channel sequence number and the scrambling code group, thereby reducing cell search time with low complexity.

Abstract translation: 提供了使用正交频分复用（OFDM）的蜂窝系统中的前向链路，公共导频信道结构和初始小区搜索方法以及用于切换的相邻小区搜索方法的同步信道。 基于时分复用（TDM）配置主同步信道和辅同步信道的OFDM蜂窝系统中的小区搜索方法包括：使用包括在主同步信道符号中的主同步信道符号来获取同步块同步和主同步信道序列号 由终端接收的帧，检测帧的边界和使用同步块的扰码组和由终端接收的帧中包括的辅同步信道符号，以及使用主同步信道序列号获取扰码，并且 扰码组，从而以低复杂度减少小区搜索时间。

公开(公告)号：US08811301B2

公开(公告)日：2014-08-19

申请号：US12664487

申请日：2008-06-13

Applicant: Il-Gyu Kim ,  Hyeong-Geun Park ,  Young-Jo Ko ,  Kapseok Chang ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

Inventor： Il-Gyu Kim ,  Hyeong-Geun Park ,  Young-Jo Ko ,  Kapseok Chang ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC: H04W4/00 ,  H04W72/04 ,  H04B7/204 ,  H04B7/216 ,  H04B7/208 ,  H04B7/06 ,  H04B7/04

CPC classification number: H04W72/044 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/061 ,  H04B7/0623 ,  H04L1/1692 ,  H04L1/1812 ,  H04L1/1861 ,  H04L5/0016 ,  H04L5/0023 ,  H04L5/0055 ,  H04L27/18

Abstract: Provided is a method of efficiently transmitting an acknowledgement/negative acknowledgement (ACK/NACK) bit supporting hybrid automatic repeat request (HARQ) in a wireless communication system supporting multi-user multi-input and multi-output (MIMO). The method transmits the same downlink code and in-phase/quadrature (I/Q) multiplexed ACK/NACK bit to two mobile stations using the same uplink resource block. Accordingly, the method can efficiently transmit the ACK/NACK bit for multi-user MIMO and efficiently use downlink radio resources.

Abstract translation: 提供了一种在支持多用户多输入和多输出（MIMO）的无线通信系统中有效地发送支持混合自动重传请求（HARQ）的确认/否定确认（ACK / NACK）比特的方法。 该方法使用相同的上行链路资源块向两个移动台发送相同的下行链路码和同相/正交（I / Q）复用的ACK / NACK比特。 因此，该方法可以有效地发送用于多用户MIMO的ACK / NACK比特，并有效地使用下行无线资源。

公开(公告)号：US20100080307A1

公开(公告)日：2010-04-01

申请号：US12523125

申请日：2008-01-04

Applicant: Moon-Sik Lee ,  Hye-Kyung Jwa ,  Hyoseok Yi ,  Young-Hoon Kim

Inventor： Moon-Sik Lee ,  Hye-Kyung Jwa ,  Hyoseok Yi ,  Young-Hoon Kim

IPC: H04L27/00

CPC classification number: H04L27/2607 ,  H04L69/323 ,  H04W74/006

Abstract: Provided is a method of forming a random access preamble structure for an extended cell radius in a cellular system, the method including: generating a cyclic prefix (CP), which is the sum of a maximum delay spread and the maximum round trip delay according to the extended cell; generating a preamble sequence part. The method is used to form a preamble structure for an extended cell radius from among random access preamble structures transmitted when initial synchronization is achieved, when synchronization is lost, or when a handover is performed, during a random access process of the cellular system.

Abstract translation: 提供了一种在蜂窝系统中形成用于扩展小区半径的随机接入前导码结构的方法，所述方法包括：根据根据本发明的方法，生成循环前缀（CP），其是最大延迟扩展和最大往返延迟之和 扩展单元格 生成前导序列部分。 该方法用于在实现初始同步时，当同步丢失时，或者当在蜂窝系统的随机接入过程中执行切换时，从发送的随机接入前同步码结构中形成用于扩展小区半径的前导码结构。

公开(公告)号：US20100061322A1

公开(公告)日：2010-03-11

申请号：US12516032

申请日：2007-11-23

Applicant: Il-Gyu Kim ,  Hyeong-Geun Park ,  Young-Jo Ko ,  Kapseok Chang ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

Inventor： Il-Gyu Kim ,  Hyeong-Geun Park ,  Young-Jo Ko ,  Kapseok Chang ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC: H04W4/00

CPC classification number: H04W56/0045 ,  H04J11/0069

Abstract: A piece of user equipment (UE), which has received more than two synchronization codes at the same time, has a problem in that the UE may not confirm the synchronization codes due to an increase in inter-signal interference. As a result, the UE may not acquire a primary scrambling code (PSC). A method of transmitting a forward synchronization signal in a wireless communication system includes: each base station existing in a wireless communication system generating a frame according to a predetermined unit of frame timing by using a same external clock signal; and allocating different offsets to frames of adjacent base stations by using the external clock signal so that forward link common channels included in the frames do not overlap each other, and transmitting the frames. In addition, a method of allocating a cell code suitable for an OFDM cellular system, a forward link frame transmitting method, a method of setting timing between cells, and a method of setting timing between a base station and a mobile station can be derived.

Abstract translation: 同时接收到两个以上同步码的用户设备（UE）的问题在于，由于信号间干扰的增加，UE可能无法确认同步码。 结果，UE可能不获取主扰码（PSC）。 一种在无线通信系统中发送正向同步信号的方法包括：存在于无线通信系统中的每个基站通过使用相同的外部时钟信号根据帧定时的预定单位生成帧; 并且通过使用外部时钟信号为相邻基站的帧分配不同的偏移量，使得包括在帧中的前向链路公共信道彼此不重叠，并且发送帧。 此外，可以推导出分配适合于OFDM蜂窝系统的小区代码的方法，前向链路帧发送方法，小区之间的时间设置方法以及基站和移动站之间的定时设定方法。