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    • 46. 发明申请
    • WIRELESS MULTIPLE ACCESS SYSTEM FOR SUPPRESSING INTER-CELL INTERFERENCE
    • 无线多路访问系统,用于抑制细胞间干扰
    • WO2006088326A3
    • 2006-11-09
    • PCT/KR2006000546
    • 2006-02-17
    • LG ELECTRONICS INCAHN JOON KUIKIM BONG HOESEO DONG YOUNKIM HAK SEONGROH DONG WOOK
    • AHN JOON KUIKIM BONG HOESEO DONG YOUNKIM HAK SEONGROH DONG WOOK
    • H04B7/216H04J11/00H04J13/00H04L12/52H04L27/32
    • H04B7/2615H04L5/0017H04L5/0073H04L25/03866
    • An OFDM based multiple access system provides strong persistence against selective frequency fading and further provides suppression of inter-cell interference by using cell differentiating scrambling codes. Thus, the OFDM system maximizes frequency reuse rate. The present invention includes an OFDM modulator (30) frequency-division-multiplexing data to be transmitted, a code division unit (32) multiplexing the frequency-division-multiplexing data with a prescribed code, and an RF end (33) converting the data multiplexed by the code division unit to a radio frequency signal to tansmit. Accordingly, the present invention raises the degree of freedom (frequency division, time division, code division) of system implementation in the multiple access system. The OFDM system includes the scambling of the downlink data by different scrambling codes by a cell unit for base stations within at least two neighboring cells to identify the respective cells and transmitting the spread downlink data.
    • 基于OFDM的多址系统提供对选择性频率衰落的强持续性,并且还通过使用小区差分扰码来进一步提供小区间干扰的抑制。 因此,OFDM系统使频率重用率最大化。 本发明包括:OFDM调制器(30)对要发送的数据进行频分复用,分频单元(32)将分频多路复用数据与规定码复用;以及RF端(33),转换数据 由代码分割单元复用到射频信号以进行篡改。 因此,本发明提高了多址系统中系统实现的自由度(分频,时分,码分割)。 OFDM系统包括通过不同扰码的下行链路数据通过小区单元对至少两个相邻小区内的基站进行漫游,以识别各个小区并发送扩展的下行链路数据。
    • 49. 发明申请
    • METHOD AND APPARATUS FOR TRANSCEIVING A DATA FRAME IN A WIRELESS LAN SYSTEM
    • 用于在无线LAN系统中收发数据帧的方法和设备
    • WO2012057546A3
    • 2012-06-21
    • PCT/KR2011008098
    • 2011-10-27
    • LG ELECTRONICS INCROH DONG WOOKKANG BYEONG WOOLEE DAE WONSEOK YONG HO
    • ROH DONG WOOKKANG BYEONG WOOLEE DAE WONSEOK YONG HO
    • H04B7/04H04B7/26H04L1/00H04W84/12
    • H04W72/042H04B7/0413H04B7/0452H04B7/0617H04B7/0697H04L1/0025H04L1/0041H04L2001/0093H04W52/42H04W76/041H04W84/12
    • Provided is a method for a transmitter to transmit a data frame in a wireless LAN system. The method comprises: generating a data block including one or more data units, each of which is to be transmitted to one or more receivers through one or more spatial streams; transmitting first control information to said one or more receivers; transmitting second control information to each receiver, wherein the second control information includes a forward error correction (FEC) coding field for indicating the encoding technique applied to the data units and a modulation and coding scheme (MCS) field for indicating the MCS applied to the data units; and transmitting the data block to said one or more receivers. The first control information includes a length indicator, a multiple-input and multiple-output (MIMO) indicator, and a spatial stream indicating field, wherein the indicators and the field are intended for said data block. The MIMO indicator indicates whether the data block is for single user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). The spatial stream indicating field includes information on the number of said spatial streams.
    • 提供了一种用于发射机在无线LAN系统中发送数据帧的方法。 该方法包括:生成包括一个或多个数据单元的数据块,每个数据单元要通过一个或多个空间流发送到一个或多个接收机; 将第一控制信息传输到所述一个或多个接收机; 向每个接收机发送第二控制信息,其中第二控制信息包括用于指示应用于数据单元的编码技术的前向纠错(FEC)编码字段以及用于指示应用于该MCS的MCS的调制和编码方案(MCS)字段 数据单元; 以及将数据块发送到所述一个或多个接收器。 第一控制信息包括长度指示符,多输入多输出(MIMO)指示符和空间流指示字段,其中指示符和字段旨在用于所述数据块。 MIMO指示符指示数据块是用于单用户MIMO(SU-MIMO)还是用于多用户MIMO(MU-MIMO)。 空间流指示字段包括关于所述空间流的数量的信息。