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    • 2. 发明申请
    • METHOD FOR TRANSMITTING/RECEIVING A COMP REFERENCE SIGNAL
    • 用于发送/接收COMP参考信号的方法
    • WO2011010904A3
    • 2011-06-30
    • PCT/KR2010004880
    • 2010-07-26
    • LG ELECTRONICS INCKOO JA HOHAN SEUNG HEEKO HYUN SOOCHUNG JAE HOONIHM BIN CHULLEE MOON IL
    • KOO JA HOHAN SEUNG HEEKO HYUN SOOCHUNG JAE HOONIHM BIN CHULLEE MOON IL
    • H04L27/26
    • H04L5/0035H04L5/0048H04L25/0226H04L27/2613H04W72/042
    • Disclosed is a method for transmitting a CoMP reference signal for accurate channel estimation. The CoMP reference signal to be transmitted to a terminal which performs a CoMP operation in a multi-cell environment is a cell-specific reference signal or a CoMP-zone-specific reference signal. A method for transmitting the cell-specific reference signal uses an ID of a CoMP set constituted by cells that perform a CoMP operation, or does not apply a frequency shift value while using the ID of a relevant cell, or uses an ID of a serving cell or a frequency shift value of the serving cell. The cell-specific reference signal is transmitted using a preset specific resource region. A method for transmitting the CoMP-zone-specific reference signal is configured such that the pattern of the sequence of CoMP reference signals varies in each of the CoMP zones, and the pattern can be set in advance. In addition, the reference signal is multiplexed and transmitted using an orthogonal code resource in the event the reference signal is transmitted to a plurality of terminals using the same CoMP zone.
    • 公开了一种用于发送用于准确信道估计的CoMP参考信号的方法。 要发送到在多小区环境中执行CoMP操作的终端的CoMP参考信号是小区特定参考信号或CoMP特定区域参考信号。 用于发送小区特定参考信号的方法使用由执行CoMP操作的小区构成的CoMP集合的ID,或者在使用相关小区的ID时不应用频移值,或者使用服务的ID 小区或服务小区的频移值。 使用预设的特定资源区域发送小区特定参考信号。 配置用于发送CoMP区专用参考信号的方法被配置为使得CoMP参考信号序列的模式在每个CoMP区域中变化,并且可以预先设置模式。 此外,在使用相同的CoMP区域将参考信号发送到多个终端的情况下,使用正交码资源来复用和发送参考信号。
    • 3. 发明申请
    • TRANSMISSION METHOD AND DEVICE FOR A DOWNLINK REFERENCE SIGNAL
    • 用于下行链路参考信号的传输方法和装置
    • WO2011040797A2
    • 2011-04-07
    • PCT/KR2010006750
    • 2010-10-04
    • LG ELECTRONICS INCKO HYUN SOOCHUNG JAE HOONIHM BIN CHULLEE MOON ILHAN SEUNG HEE
    • KO HYUN SOOCHUNG JAE HOONIHM BIN CHULLEE MOON ILHAN SEUNG HEE
    • H04J11/00H04B1/69H04B7/04
    • H04L5/0048H04J13/00
    • The present invention relates to a wireless communication system, and a method and device are disclosed for transmitting a downlink reference signal in the wireless communication system. According to one embodiment of the present invention, a method in which a base station transmits a downlink signal by using a plurality of layers comprises the steps of: multiplexing and transmitting a reference signal for the plurality of layers on the basis of a reference signal pattern on a data region of a downlink subframe; and transmitting data for the plurality of layers on the data region of the downlink subframe, wherein the reference signal for the plurality of layers is a dedicated reference signal (DRS) which is used to demodulate the data for the plurality of layers at a receiving end, and, in the multiplexing of the reference signal, 24 resource element positions comprised in the reference signal pattern are set as 6 groups, the 6 groups are set as 2 higher groups, the reference signal for the plurality of layers is split and placed in the 2 higher groups, and the reference signal for 2 or more layers placed in the same group is subjected to code-division multiplexing (CDM).
    • 无线通信系统技术领域本发明涉及无线通信系统,并且公开了用于在无线通信系统中发送下行链路参考信号的方法和装置。 根据本发明的一个实施例,基站通过使用多个层发送下行链路信号的方法包括以下步骤:基于参考信号模式复用并发送多个层的参考信号 在下行链路子帧的数据区域上; 以及在所述下行链路子帧的数据区域上发送所述多个层的数据,其中,所述多个层的参考信号是用于在接收端解调所述多个层的数据的专用参考信号(DRS) ,并且在参考信号的多路复用中,包括在参考信号模式中的24个资源元素位置被设置为6组,将6组设置为2个较高组,将多个层的参考信号分离并放置在 2个较高组以及放置在同一组中的2个或更多个层的参考信号进行码分复用(CDM)。
    • 6. 发明申请
    • METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MULTIPLE ANTENNAS
    • 用于在支持多个天线的无线通信系统中发送下行链路参考信号的方法和设备
    • WO2011019230A2
    • 2011-02-17
    • PCT/KR2010005321
    • 2010-08-13
    • LG ELECTRONICS INCKO HYUN SOOIHM BIN CHULLEE MOON ILCHUNG JAE HOONHAN SEUNG HEE
    • KO HYUN SOOIHM BIN CHULLEE MOON ILCHUNG JAE HOONHAN SEUNG HEE
    • H04B7/06H04L27/26
    • H04L5/0048H04B7/0413H04B7/0626H04B7/216H04J13/004H04L5/0016H04L5/0023H04L5/0051H04L5/0053H04L5/0057H04L5/0094H04L25/0224H04L27/2601H04L27/2613H04W52/325H04W72/02H04W72/04H04W72/085
    • The present invention relates to a wireless communication system, and in particular, to a method and an apparatus for transmitting a downlink reference signal in a wireless communication system that supports multiple antennas. The method for transmitting a reference signal for a maximum of eight antenna ports according to one embodiment of the present invention comprises: in a base station, mapping part of a common reference signal for a maximum of four antenna ports into a downlink subframe that includes a 1st slot and a 2nd slot and has a general cyclic prefix (CP) configuration; in the base station, mapping a channel status information reference signal for the maximum of eight antenna ports into the downlink subframe, according to a preset pattern; and in the base station, transmitting the downlink subframe into which the common reference signal and the channel status information reference signal have been mapped, wherein the preset pattern defines the channel status information reference signal for the maximum of eight antenna ports to be mapped onto two OFDM symbols of the data region in the downlink subframe, with the two OFDM symbols being spaced apart by one OFDM symbol, and wherein part of the common reference signal for the maximum of four antenna ports is limited to the common reference signal for a maximum of two antenna ports.
    • 用于在支持多个天线的无线通信系统中发送下行链路参考信号的方法和设备技术领域本发明涉及无线通信系统,并且尤其涉及用于在支持多个天线的无线通信系统中发送下行链路参考信号 根据本发明的一个实施例,用于发送最多八个天线端口的参考信号的方法包括:在基站中,将用于最多四个天线端口的公共参考信号的一部分映射到包括 第一个插槽和第二个插槽,并具有通用循环前缀(CP)配置; 在基站中,按照预设的模式,将最多八个天线端口的信道状态信息参考信号映射到下行子帧; 并且在基站中发送已经映射了公共参考信号和信道状态信息参考信号的下行链路子帧,其中,预设模式定义用于最多八个天线端口的信道状态信息参考信号被映射到两个 下行链路子帧中的数据区域的OFDM符号,其中两个OFDM符号间隔一个OFDM符号,并且其中用于最多四个天线端口的公共参考信号的一部分被限制为公共参考信号达最大值 两个天线端口。
    • 8. 发明申请
    • METHOD FOR PILOT SYMBOL TRANSMISSION IN DOWNLINK MIMO SYSTEM
    • 下行MIMO系统中的引导符号传输方法
    • WO2010038999A3
    • 2010-06-24
    • PCT/KR2009005646
    • 2009-10-01
    • LG ELECTRONICS INCLEE MOON ILHAN SEUNG HEEKOO JA HOKO HYUN SOOCHUNG JAE HOONIHM BIN CHUL
    • LEE MOON ILHAN SEUNG HEEKOO JA HOKO HYUN SOOCHUNG JAE HOONIHM BIN CHUL
    • H04B7/04H04L27/26H04W16/24H04W48/12
    • H04W48/12H04B7/0413H04L5/0023H04L5/0037H04L5/005H04L5/0051
    • The present invention relates to a method for transmitting a pilot signal in a downlink MIMO (Multi Input Multi Output) system that supports a first UE (User Equipment) supporting N number of transmission antennae out of a total of M transmission antennae and supports a second UE supporting said M (M > N) number of transmission antennae. Said method comprises a step wherein a pilot symbol is placed as an image in the resource block (RB) region on a subframe that enables the transmission of a user-specific pilot symbol to said second UE in a base station; and a step wherein the subframe whereon said pilot symbol has been placed as an image is transmitted, wherein said RB region includes a first region and a second region, and the first region and second region each include a certain number of continuous OFDM symbols on a respective time axis, and on said first region is placed as an image a cell-specific pilot symbol with respect to the transmission antenna ports 0 to N-1 that can recognize both said first UE and said second UE, and on said second region is placed as an image a user-specific pilot symbol with respect to the transmission antenna ports 0 to M that can recognize said UE only.
    • 本发明涉及一种用于在支持在总共M个传输天线中支持N个发射天线的第一UE(用户设备)的下行链路MIMO(多输入多输出))系统中发送导频信号的方法,并且支持第二 UE支持所述M(M> N)个发射天线。 所述方法包括一个步骤,其中导频符号作为图像被放置在能够在基站中向所述第二UE发送用户专用导频符号的子帧上的资源块(RB)区域中; 并且发送其中所述导频符号已被放置为图像的子帧的步骤,其中所述RB区域包括第一区域和第二区域,并且所述第一区域和第二区域各自包括一定数量的连续OFDM符号 相对于能够识别所述第一UE和所述第二UE的发送天线端口0至N-1,并且在所述第一区域上将所述第一区域作为图像放置为小区特定导频符号,并且在所述第二区域 作为图像被放置为相对于仅能识别所述UE的发送天线端口0至M的用户特定导频符号。