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24 条记录 (耗时 0.014 秒)

    METHOD FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEMS
    5.
    发明公开
    METHOD FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEMS 审中-公开
    VERFAHREN ZURÜBERTRAGUNGVON STEUERUNGSINFORMATIONEN DRAHTLOSEN KOMMUNIKATIONSSYSTEMEN

    公开(公告)号：EP2160858A1

    公开(公告)日：2010-03-10

    申请号：EP08766532.9

    申请日：2008-06-23

    申请人： Electronics and Telecommunications Research Institute ,  KT Corporation

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

    IPC分类号： H04L1/12

    CPC分类号： H04W72/0406 ,  H04J13/0048 ,  H04J13/0062 ,  H04J13/18 ,  H04L1/0026 ,  H04L1/003 ,  H04L1/0031 ,  H04L1/1607 ,  H04L1/1692 ,  H04L1/1861 ,  H04L5/0017 ,  H04L23/02 ,  H04W72/0466

    摘要： When a plurality of terminals share the same resources in a wireless communication system, and when control information such as acknowledgement/negative acknowledgement (ACK/NAK) information or scheduling information is transmitted, a method of efficiently performing code division multiplexing (CDM) is required to distinguish the plurality of terminals. In particular, it is necessary to develop a method by which a code sequence of CDM can be selected and used according to each cell condition. Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly share frequency and time resources. The method includes the operations of receiving condition information in a cell; selecting one of a plurality of time domain orthogonal sequences having different lengths, according to the condition information; and allocating the selected time domain orthogonal sequence to a control signal symbol block.

    摘要翻译： 当多个终端在无线通信系统中共享相同的资源时，并且当发送诸如确认/否定确认（ACK / NAK）信息或调度信息等控制信息时，需要有效执行码分复用（CDM）的方法 以区分多个终端。 特别地，有必要开发一种可以根据每个单元条件选择和使用CDM的代码序列的方法。 提供了一种在无线通信系统中形成信号的方法，其中多个终端共享频率和时间资源。 该方法包括在小区中接收条件信息的操作; 根据条件信息选择具有不同长度的多个时域正交序列中的一个; 以及将所选择的时域正交序列分配给控制信号符号块。

    METHOD AND APPARATUS FOR TRANSMITTING BY USING TRANSMIT DIVERSITY AT DFT SPREAD OFDMA
    7.
    发明公开
    METHOD AND APPARATUS FOR TRANSMITTING BY USING TRANSMIT DIVERSITY AT DFT SPREAD OFDMA 有权
    方法和设备派出以使用发送多样性DFT扩频OFDMA

    公开(公告)号：EP1949634A1

    公开(公告)日：2008-07-30

    申请号：EP06823636.3

    申请日：2006-11-17

    申请人： Electronics and Telecommunications Research Institute

    发明人： KIM, Il-Gyu ,  PARK, Hyeong-Geun ,  CHANG, Kap-Seok ,  KIM, Young-Hoon ,  BANG, Seung-Chan ,  SHIN, Eun-Jeong ,  JWA, Hye-Kyung ,  LEE, Moon-Sik

    IPC分类号： H04L27/26

    CPC分类号： H04B7/0608 ,  H04B7/0602 ,  H04L27/2626

    摘要： The present invention relates to a packet data transmission method in an OFDMA system and an apparatus thereof. The present invention provides a user packet data transmission method including generating a RACH burst for channel information estimation, selecting a first antenna among a plurality of antennas, transmitting the RACH burst through the first antenna to a base station, receiving a data transmission acceptance signal from the base station, in response to the RACH burst, transmitting user packet data through the first antenna when receiving a signal indicating that the data transmission is allowed, and selecting a second antenna that is difference from the first antenna and transmitting a RACH burst through the second antenna when receiving a signal indicating that the data transmission is not allowed, and a transmitting apparatus of a mobile station having the plurality of antennas. According to the present invention, the RACH burst and user packet data are transmitted by using a mobile station having a plurality of antennas in an LTE-applied OFDMA system, and therefore data transmission can be performed with a wide bandwidth and high data rate and a deep fading period that may occur during the data transmission can be reduced, thereby preventing call dropping and improving data transmission performance.

    TDM BASED CELL SEARCH METHOD FOR OFDM SYSTEM
    10.
    发明公开
    TDM BASED CELL SEARCH METHOD FOR OFDM SYSTEM 审中-公开
    AUF TDM基础ZELLENSUCHVERFAHRENFÜREIN OFDM系统

    公开(公告)号：EP2076980A1

    公开(公告)日：2009-07-08

    申请号：EP07833422.4

    申请日：2007-10-18

    申请人： Electronics and Telecommunications Research Institute ,  Samsung Electronics Co., Ltd.

    发明人： KIM, Il-Gyu ,  PARK, Hyeong-Geun ,  KO, Young-Jo ,  CHANG, Kapseok ,  YI, Hyoseok ,  LEE, Jun-Hwan ,  KIM, Young-Hoon ,  BANG, Seung-Chan

    IPC分类号： H04B7/26

    CPC分类号： 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

    摘要： 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.

    摘要翻译： 提供了使用正交频分复用（OFDM）的蜂窝系统中的正向链路，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。 在基于时分多路复用（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。