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    TRANSMITTING APPARATUS AND TRANSMITTING METHOD OF BASE STATION, AND RECEIVING APPARATUS AND COMMUNICATION METHOD OF UE IN MOBILE COMMUNICATION SYSTEM
    2.
    发明申请
    TRANSMITTING APPARATUS AND TRANSMITTING METHOD OF BASE STATION, AND RECEIVING APPARATUS AND COMMUNICATION METHOD OF UE IN MOBILE COMMUNICATION SYSTEM 审中-公开
    基站的发送装置和发送方法，以及接收移动通信系统中的UE的装置和通信方法

    公开(公告)号：WO2007069830A3

    公开(公告)日：2008-09-25

    申请号：PCT/KR2006005197

    申请日：2006-12-05

    Applicant: KOREA ELECTRONICS TELECOMM ,  IND ACADEMIC COOP ,  KIM KWANG-SOON ,  RHEE DU-HO ,  KO YOUNG-JO ,  AHN JAE-YOUNG

    Inventor： KIM KWANG-SOON ,  RHEE DU-HO ,  KO YOUNG-JO ,  AHN JAE-YOUNG

    IPC: H04J11/00

    CPC classification number: H04W52/247 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/0029 ,  H04L1/20 ,  H04L5/023 ,  H04L2001/0093

    Abstract: A receiving apparatus of a UE transmits at least one channel information among a plurality of channel information to a transmitting apparatus of a base station according to an adaptive transmission method set for a received signal. In addition, the receiving apparatus transmits channel state information generated on the basis of the plurality of channel information to the transmitting apparatus with a relatively long interval. The transmitting apparatus transmits traffic data to the transmitting apparatus by using the received channel state information and at least one of channel information and one of a plurality of adaptive transmission methods. Accordingly, the amount of channel information transmitted to the transmitting apparatus can be modified in accordance with an adaptive transmission method set for a received signal, thereby minimizing the amount of channel information fed back from the receiving apparatus and increasing system capacity.

    Abstract translation: UE的接收装置根据对接收到的信号设定的自适应发送方法，将多个信道信息中的至少一个信道信息发送给基站的发送装置。 此外，接收装置以相对长的间隔向发送装置发送基于多个信道信息生成的信道状态信息。 发送装置通过使用接收到的信道状态信息和信道信息以及多个自适应发送方法中的至少一个来向业务数据发送业务数据。 因此，可以根据为接收信号设置的自适应发送方法来修改发送到发送装置的信道信息量，从而使从接收装置反馈的信道信息的量最小化并提高系统容量。

    4.
    发明专利
    未知

    公开(公告)号：AT452476T

    公开(公告)日：2010-01-15

    申请号：AT04774538

    申请日：2004-09-08

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： JUNG SOO-JUNG ,  KIM KWANG-SOON ,  RYU BYUNG-HAN

    IPC: H04J13/02 ,  H04L12/28 ,  H04B7/204 ,  H04B7/26 ,  H04L1/16 ,  H04L5/02 ,  H04L27/26 ,  H04W72/14 ,  H04W74/08

    Abstract: Disclosed is a random access data transmission system and method using OFDMA. The system includes a scheduling ID into an access grant on a preamble for a random access, and transmits it together with an acknowledgment or a non-acknowledgment of the preamble, a base station uses the scheduling ID to notify the mobile station of a random access data transmittable time and a data transmission channel through a control channel, and the mobile station transmits a preamble in advance. After receiving a transmission assignment instruction corresponding to a scheduling ID through the control channel, the mobile station transmits random access data through an assigned channel.

    METHOD AND APPARATUS FOR EMBODYING AND SYNCHRONIZING DOWNLINK SIGNAL IN MOBILE COMMUNICATION SYSTEM AND METHOD FOR SEARCHING CELL USING THE SAME
    5.
    发明专利
    METHOD AND APPARATUS FOR EMBODYING AND SYNCHRONIZING DOWNLINK SIGNAL IN MOBILE COMMUNICATION SYSTEM AND METHOD FOR SEARCHING CELL USING THE SAME 未知

    公开(公告)号：AU2002356462A1

    公开(公告)日：2004-06-18

    申请号：AU2002356462

    申请日：2002-11-29

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： KIM KWANG-SOON ,  CHANG KYUNG-HI ,  CHO YONG-SOO ,  KIM TAE-GON

    IPC: H04B7/26 ,  H04L27/26 ,  H04L7/00

    Abstract: In an OFDMA-based cellular system, a frame of a downlink signal includes a common slot and traffic slots. The common slot includes a synchronization preamble and a cell search preamble. The synchronization preamble has a structure for synchronizing time and frequency, and the cell search preamble has a cell search structure. The traffic slot includes pilot symbols provided on the time and frequency axes. A cyclic prefix is used to estimate initial symbol synchronization, and the initial symbol synchronization and the synchronization preamble are used to synchronize the frame. The synchronization frame and the cell search preamble are used to estimate time and frequency synchronization. The cell search preamble is used to search cells. When the initial synchronization is performed, the cyclic prefix is used to track the frequency, the synchronization preamble is used to track symbol synchronization, and the cell search preamble is used to track fine frequency synchronization.

    6.
    发明专利
    未知

    公开(公告)号：AT418189T

    公开(公告)日：2009-01-15

    申请号：AT04774537

    申请日：2004-09-08

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： AHN JAE-YOUNG ,  KIM KWANG-SOON

    IPC: H04B7/208 ,  H04B7/26 ,  H04L5/02 ,  H04L27/26 ,  H04W72/06

    Abstract: Disclosed is a method for partitioning resource spaces, and allocating physical channels and power in an OFDMA-based cellular system. A resource within a slot is partitioned into resource spaces in common in a plurality of adjacent cells, and the partitioned resource spaces are partitioned into resource sets according to sizes of physical channels in the adjacent cells. The physical channels classified by predetermined characteristics are respectively assigned to the partitioned resource sets within the resource space. Further, the resource space for transmitting traffic channels between two different cells is partitioned into resource spaces so that the traffic channels in the same subspace may be collided with each other, and a power control is applied between the collided channels to control the interference from the adjacent cells.

    FREQUENCY HOPPING OFDMA METHOD USING SYMBOLS OF COMB PATTERN
    7.
    发明专利
    FREQUENCY HOPPING OFDMA METHOD USING SYMBOLS OF COMB PATTERN 未知

    公开(公告)号：AU2002353638A1

    公开(公告)日：2004-05-13

    申请号：AU2002353638

    申请日：2002-11-26

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： CHANG KYUNG-HI ,  KIM KWANG-SOON ,  CHO YONG-SOO ,  HA SUK-WON

    IPC: H04J11/00 ,  H04J99/00 ,  H04L1/00 ,  H04L5/02 ,  H04L27/26

    Abstract: Method for providing frequency-hopping OFDMA using symbols of comb patter, the method including the steps of: a) assigning frequency domain signal X(k) of comb pattern (comb symbol, k is frequency index) to modulated data sequence, the comb symbol comprising predetermined number of sub carriers (sub carrier group) which are placed with predetermined interval in the whole available frequency band; b) getting the comb symbol hopped for the comb symbol to have independent frequency offset; and c) inverse fast fourier transforming the comb symbol to time domain signal x(n) (n is time index) and transmitting the signal.

    8.
    发明专利
    未知

    公开(公告)号：DE602004018536D1

    公开(公告)日：2009-01-29

    申请号：DE602004018536

    申请日：2004-09-08

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： AHN JAE-YOUNG ,  KIM KWANG-SOON

    IPC: H04B7/208 ,  H04B7/26 ,  H04L5/02 ,  H04L27/26 ,  H04W72/06

    Abstract: Disclosed is a method for partitioning resource spaces, and allocating physical channels and power in an OFDMA-based cellular system. A resource within a slot is partitioned into resource spaces in common in a plurality of adjacent cells, and the partitioned resource spaces are partitioned into resource sets according to sizes of physical channels in the adjacent cells. The physical channels classified by predetermined characteristics are respectively assigned to the partitioned resource sets within the resource space. Further, the resource space for transmitting traffic channels between two different cells is partitioned into resource spaces so that the traffic channels in the same subspace may be collided with each other, and a power control is applied between the collided channels to control the interference from the adjacent cells.

    9.
    发明专利
    未知

    公开(公告)号：DE60324184D1

    公开(公告)日：2008-11-27

    申请号：DE60324184

    申请日：2003-06-02

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： LEE SOK-KYU ,  KIM KWANG-SOON ,  CHANG KYUNG-HI

    IPC: H04B7/06 ,  H04J11/00 ,  H04J20060101 ,  H04L1/06 ,  H04L5/02 ,  H04L5/06 ,  H04L27/26 ,  H04W16/02 ,  H04W16/28 ,  H04W72/04

    Abstract: Disclosed are an adaptive pilot symbol assignment method that flexibly controls the number of transmit antennas according to each user's moving speed, channel status, or user request, and assigns proper pilot symbols in the downlink of an OFDMA (Orthogonal Frequency Division Multiplexing Access) based cellular system; and a sub-carrier allocation method for high-speed mobile that allocates some sub-carriers to assign proper pilot symbols for ultrahigh-speed mobile users, and the rest of the sub-carriers to the other users to assign proper pilot symbols to the users, on the assumption that the ultrahigh-speed mobile users have a traffic volume almost insignificant to the whole traffic volume.

    Method and apparatus for embodying and synchronizing downlink signal in mobile communication system and method for searching cell using the same
    10.
    发明专利
    Method and apparatus for embodying and synchronizing downlink signal in mobile communication system and method for searching cell using the same 未知

    公开(公告)号：AU2002356462A8

    公开(公告)日：2004-06-18

    申请号：AU2002356462

    申请日：2002-11-29

    Applicant: KOREA ELECTRONICS TELECOMM ,  CHUNG ANG UNIVERSITY

    Inventor： KIM KWANG-SOON ,  CHANG KYUNG-HI ,  CHO YONG-SOO ,  KIM TAE-GON

    IPC: H04B7/26 ,  H04L27/26 ,  H04L7/00

    Abstract: In an OFDMA-based cellular system, a frame of a downlink signal includes a common slot and traffic slots. The common slot includes a synchronization preamble and a cell search preamble. The synchronization preamble has a structure for synchronizing time and frequency, and the cell search preamble has a cell search structure. The traffic slot includes pilot symbols provided on the time and frequency axes. A cyclic prefix is used to estimate initial symbol synchronization, and the initial symbol synchronization and the synchronization preamble are used to synchronize the frame. The synchronization frame and the cell search preamble are used to estimate time and frequency synchronization. The cell search preamble is used to search cells. When the initial synchronization is performed, the cyclic prefix is used to track the frequency, the synchronization preamble is used to track symbol synchronization, and the cell search preamble is used to track fine frequency synchronization.

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