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    Mobile modem apparatus, terminal apparatus having a function of packet rearranging and method for receiving packet able to protect bottleneck
    44.
    发明公开
    Mobile modem apparatus, terminal apparatus having a function of packet rearranging and method for receiving packet able to protect bottleneck 审中-公开
    移动调制解调器设备，具有分组功能的终端设备和用于接收分组的保护BOTTLENECK的方法

    公开(公告)号：KR20120071126A

    公开(公告)日：2012-07-02

    申请号：KR20100132735

    申请日：2010-12-22

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： SHIN MU YONG ,  KIM IL GYU ,  SHIN HYUNG CHEOL

    IPC: H04W92/02 ,  H04L1/16 ,  H04L29/06

    CPC classification number: H04W92/02 ,  H04L1/16 ,  H04L29/06 ,  H04W88/02

    Abstract: PURPOSE: A mobile modem device and a packet receiving method for preventing a bottle neck phenomenon are provided to perform packet rearrangement function of a terminal device. CONSTITUTION: A first buffer(110) stores a packet which is not normally received. A packet transmission controller(120) determines whether the packet is normally received. The packet transmission controller transmits the normally received packet to a terminal device(200). The packet transmission controller stores the packet in a first buffer.

    Abstract translation: 目的：提供一种用于防止瓶颈现象的移动调制解调器装置和分组接收方法，以执行终端设备的分组重排功能。 构成：第一缓冲器（110）存储通常不被接收的分组。 分组传输控制器（120）确定分组是否正常接收。 分组传输控制器将正常接收的分组发送到终端设备（200）。 分组传输控制器将分组存储在第一缓冲器中。

    DISTRIBUTED SUBCHANNEL IMPLEMENTATION IN MULTICARRIER TRANSMISSION SYSTEM
    45.
    发明公开
    DISTRIBUTED SUBCHANNEL IMPLEMENTATION IN MULTICARRIER TRANSMISSION SYSTEM 审中-公开
    多媒体传输系统中的分布式子信道实现

    公开(公告)号：KR20070102965A

    公开(公告)日：2007-10-22

    申请号：KR20070037568

    申请日：2007-04-17

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： KO YOUNG JO ,  KIM IL GYU ,  PARK HYEONG GEUN ,  CHANG KAP SEOK ,  YI HYO SEOK ,  KIM YOUNG HOON ,  BANG SEUNG CHAN

    IPC: H04L27/26 ,  H04B7/02 ,  H04B7/26

    CPC classification number: H04L27/2601 ,  H04L5/0007 ,  H04L5/0032

    Abstract: A method for arranging distributed sub-channels in a multicarrier transmission system is provided to improve transmission diversity efficiency by using two sub-carriers or symbols as a single basic unit. Two neighboring carriers, which are adjacent to each other on a frequency axis, are grouped into a single basic unit, and the basic units are distributed on a channel in a multicarrier transmission system. The channel is arranged, such that the basic units are adjacent each other on the frequency axis, while the basic units are apart from each other by a distance greater than one symbol interval on a time axis. Alternatively, two symbol intervals, which are adjacent to each other on the time axis, are grouped to form the single basic unit.

    Abstract translation: 提供一种用于在多载波传输系统中布置分布式子信道的方法，以通过使用两个子载波或符号作为单个基本单元来提高传输分集效率。 在频率轴上彼此相邻的两个相邻载波被分组为单个基本单元，并且基本单元分布在多载波传输系统中的信道上。 通道布置成使得基本单元在频率轴上彼此相邻，而基本单元在时间轴上彼此分开大于一个符号间隔的距离。 或者，在时间轴上彼此相邻的两个符号间隔被分组以形成单个基本单元。

    TDM BASED CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF AND SYSTEM THEREOF
    46.
    发明公开
    TDM BASED CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF AND SYSTEM THEREOF 审中-公开
    OFDM蜂窝系统中的基于TDM的小区搜索方法，其帧传输方法及其系统

    公开(公告)号：KR20070099483A

    公开(公告)日：2007-10-09

    申请号：KR20070032903

    申请日：2007-04-03

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： KIM IL GYU ,  PARK HYEONG GEUN ,  CHANG KAP SEOK ,  KO YOUNG JO ,  YI HYO SEOK ,  KIM YOUNG HOON ,  BANG SEUNG CHAN ,  HWANG SEUNG KU

    IPC: H04L27/26 ,  H04B7/26 ,  H04J11/00 ,  H04L7/10

    CPC classification number: H04J11/0073 ,  H04J11/0076 ,  H04L5/0016 ,  H04L5/0078 ,  H04L27/2657 ,  H04W48/16

    Abstract: A cell searching method in an OFDM(Orthogonal Frequency Division Multiplexing) cellular system, a frame transmitting method, and a frame transmitter are provided to reduce a cell searching time in a mobile terminal by simplifying a cell searching device. A forward link frame has duration of 10ms and includes 20 sub-frames(110). Each of the sub-frames has a duration of 0.5ms and includes 7 OFDM symbols(120). A primary synchronous channel OFDM symbol(100-A) and a secondary synchronous channel OFDM symbol(101-A) are included in every ten sub-frames. Two first and second synchronous channel OFDM symbols are included in one frame. A repetition period(130) of the synchronous channel symbols is equal to a sum of lengths of ten sub-frames. When first and second synchronous channels are coupled with each other according to a TDM(Time Division Multiplexing) scheme, the first and second synchronous channels are arranged to be adjacent to each other, such that a channel estimation value of the first synchronous channel is used, while the second synchronous channel is coherently demodulated.

    Abstract translation: 提供OFDM（正交频分复用）蜂窝系统，帧发送方法和帧发送机中的小区搜索方法，通过简化小区搜索装置来减少移动终端中的小区搜索时间。 前向链路帧具有10ms的持续时间并且包括20个子帧（110）。 每个子帧具有0.5ms的持续时间并且包括7个OFDM符号（120）。 在每十个子帧中包括主同步信道OFDM符号（100-A）和辅同步信道OFDM符号（101-A）。 一个帧中包括两个第一和第二同步信道OFDM符号。 同步信道符号的重复周期（130）等于十个子帧的长度之和。 当根据TDM（时分复用）方案将第一和第二同步信道彼此耦合时，第一和第二同步信道被布置为彼此相邻，使得使用第一同步信道的信道估计值 而第二同步信道被相干解调。

    FDM BASED CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF AND SYSTEM THEREOF
    47.
    发明公开
    FDM BASED CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF AND SYSTEM THEREOF 审中-公开
    OFDM系统中的基于FDM的小区搜索方法，其帧传输方法及其系统

    公开(公告)号：KR20070099477A

    公开(公告)日：2007-10-09

    申请号：KR20070032811

    申请日：2007-04-03

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： KIM IL GYU ,  PARK HYEONG GEUN ,  CHANG KAP SEOK ,  KO YOUNG JO ,  YI HYO SEOK ,  KIM YOUNG HOON ,  BANG SEUNG CHAN ,  KIM NAM IL

    IPC: H04L27/26 ,  H04B7/26 ,  H04J11/00

    CPC classification number: H04J11/0069 ,  H04B7/2621

    Abstract: A cell searching method in an OFDM(Orthogonal Frequency Division Multiplexing) cellular system, a frame transmitting method, and a frame transmitter are provided to reduce a cell searching time in the OFDM cellular system by reducing a configuration complexity of a cell searching unit. A synchronization detector(622) includes correlation calculators(701-A,701-B), a signal coupler(702), an accumulation unit(703), and a timing detector(710). Outputs from the correlation calculators are accumulated in the accumulation unit through the signal coupler. The correlation calculator generates 4800 units in respective synchronization blocks. The timing detector detects a position of a sample having a peak value from correlation values, and determines the detector sample position as synchronous channel symbol timing. The accumulation unit adds the respective correlation values for the sample positions to the correlation value corresponding to a position, which is spaced from the respective sample positions by a length of the synchronization block.

    Abstract translation: 提供OFDM（正交频分复用）蜂窝系统，帧发送方法和帧发送机中的小区搜索方法，通过减小小区搜索单元的配置复杂度来减少OFDM蜂窝系统中的小区搜索时间。 同步检测器（622）包括相关计算器（701-A，701-B），信号耦合器（702），累积单元（703）和定时检测器（710）。 来自相关计算器的输出通过信号耦合器累积在累积单元中。 相关计算器在相应的同步块中产生4800个单元。 定时检测器从相关值检测具有峰值的样本的位置，并将检测器采样位置确定为同步信道符号定时。 累积单元将样本位置的各个相关值相加于与各个采样位置间隔一个同步块的长度的位置相对应的相关值。

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