公开(公告)号：US20150229379A1

公开(公告)日：2015-08-13

申请号：US14690721

申请日：2015-04-20

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Zhi ZHANG ,  Ming XU ,  Masayuki HOSHINO ,  Daichi IMAMURA

IPC: H04B7/06 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04B7/0626 ,  H04L5/0051 ,  H04W52/343 ,  H04W72/0473

Abstract: A wireless communication system and a method for detecting downlink receiving power in the system are disclosed. N cells in the system respectively transmit data to at least one receiving terminal via N resource blocks using the same time-frequency resources; multiple channel state information reference signals (CSI-RSs) of a corresponding cell are set in each resource block, and orthogonality is maintained among the CSI-RSs of all the cells, wherein N is an integer greater than 1. Said method includes: an additional demodulation reference signal (DM-RS) used for indicating a receiving power is set in a puncture position in the resource block of the first cell which corresponds to a CSI-RS set in a resource block of another cell; and the receiving power of said first cell is detected according to said additional DM-RS. By using said method, the receiving power of a single cell in N cells can be detected, and the system overhead is not increased.

Abstract translation: 公开了一种用于检测系统中的下行链路接收功率的无线通信系统和方法。 系统中的N个小区通过使用相同的时间 - 频率资源的N个资源块分别向至少一个接收终端发送数据; 在每个资源块中设置相应小区的多信道状态信息参考信号（CSI-RS），并且在所有小区的CSI-RS之间保持正交性，其中N是大于1的整数。所述方法包括： 用于指示接收功率的附加解调参考信号（DM-RS）被设置在与另一个小区的资源块中的CSI-RS集相对应的第一小区的资源块中的删余位置; 并且根据所述附加DM-RS检测所述第一小区的接收功率。 通过使用该方法，可以检测N个小区中的单个小区的接收功率，并且不增加系统开销。

公开(公告)号：US20140347971A1

公开(公告)日：2014-11-27

申请号：US14455236

申请日：2014-08-08

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Zhi ZHANG ,  Ming XU ,  Masayuki HOSHINO ,  Seigo NAKAO ,  Daichi IMAMURA

IPC: H04L5/00

CPC classification number: H04J13/004 ,  H04J13/0048 ,  H04J13/12 ,  H04J13/18 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0026 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0066 ,  H04L43/087

Abstract: The present disclosure provides an orthogonal codes based code division multiplexing method of performing the code division multiplexing of demodulation reference signals in multiple layers of resource blocks by using orthogonal matrices, the method comprising: changing the order of chips in particular rows of a first orthogonal matrix to obtain a second orthogonal matrix with the changed order of chips; and multiplying the chips in respective rows of the second orthogonal matrix by the demodulation reference signals in corresponding layers of resource blocks correspondingly in the time direction to obtain code division multiplexing signals. The technical scheme of the present disclosure can improve the power jitter situation of downlink signals on the time, thereby the usage efficiency of the power amplifier at the base station side can be improved.

Abstract translation: 本公开提供了一种基于正交码的码分复用方法，其通过使用正交矩阵来执行多层资源块中的解调参考信号的码分复用，所述方法包括：改变第一正交矩阵的特定行中的码片的顺序 以获得具有改变的码片顺序的第二正交矩阵; 并将第二正交矩阵的各行中的码片乘以相应于时间方向的资源块的相应层中的解调参考信号，以获得码分复用信号。 本公开的技术方案可以提高下行链路信号的功率抖动情况，从而可以提高基站侧的功率放大器的使用效率。

公开(公告)号：US20140334328A1

公开(公告)日：2014-11-13

申请号：US14338246

申请日：2014-07-22

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Hui TONG ,  Ming XU ,  Masayuki HOSHINO ,  Daichi IMAMURA

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0048 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0639 ,  H04L5/0051 ,  H04L5/0055 ,  H04L5/0057 ,  H04W16/14 ,  H04W72/04 ,  H04W72/0453 ,  H04W72/046 ,  H04W72/0473 ,  H04W72/082 ,  H04W72/085 ,  Y02D70/1262 ,  Y02D70/146

Abstract: A method and a system of setting up a reference signal in a radio communication system are disclosed. The radio communication system includes a serving cell and a neighboring cell, and a mobile terminal of the serving cell uses the same temporal frequency resource to receive a serving resource block from the serving cell and an interference resource block from the neighboring cell. The method includes setting up a user-specific reference signal in the interference resource block and puncturing at the same temporal frequency position as the temporal frequency position at which the user-specific reference signal is set up on the interference resource block of the serving resource block to prevent any signal from being transmitted at the punctured temporal frequency position. When the method and the system are used and the interference power between cells is measured, it is possible to effectively reduce feedback overhead in a coordinated beamforming.

Abstract translation: 公开了一种在无线电通信系统中建立参考信号的方法和系统。 无线电通信系统包括服务小区和相邻小区，并且服务小区的移动终端使用相同的时间频率资源从服务小区接收服务资源块和来自相邻小区的干扰资源块。 该方法包括在干扰资源块中设置用户特定参考信号，并在与服务资源块的干扰资源块上建立用户特定参考信号的时间频率位置相同的时间频率位置进行删截 以防止在穿孔的时间频率位置发送任何信号。 当使用方法和系统并且测量小区之间的干扰功率时，可以有效地减少协调波束形成中的反馈开销。

公开(公告)号：US20140307823A1

公开(公告)日：2014-10-16

申请号：US14316634

申请日：2014-06-26

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Hui TONG ,  Masayuki HOSHINO ,  Ming XU ,  Seigo NAKAO ,  Daichi IMAMURA

IPC: H04B7/04

CPC classification number: H04B7/0478 ,  H04B7/024 ,  H04B7/0456 ,  H04B7/0469 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0641 ,  H04B7/0663 ,  H04B2001/3855 ,  H04B2001/3861 ,  H04L25/03904 ,  H04L25/03917 ,  H04W88/02 ,  H04W88/08

Abstract: The present disclosure provides a method of generating codebook in a wireless communication system with multiple antenna arrays, as well as a wireless communication system, base station and terminal using the codebook for communication. The method comprises steps of: providing a basic codebook which contains multiple pre-coding matrices; and assigning phase offsets to certain pre-coding matrices in the basic codebook to form a codebook with phase offset. The feedback overhead from a client to a base station side is reduced and a good precision of feedback for multi-antenna array is kept by applying the method of generating codebook and using the generated codebook in the wireless communication system, base station and terminal.

Abstract translation: 本公开提供了一种在具有多个天线阵列的无线通信系统中生成码本的方法，以及使用该通信码本的无线通信系统，基站和终端。 该方法包括以下步骤：提供包含多个预编码矩阵的基本码本; 并将相位偏移分配给基本码本中的某些预编码矩阵以形成具有相位偏移的码本。 降低了从客户端到基站侧的反馈开销，通过在无线通信系统，基站和终端中应用生成码本的方法和使用生成的码本来保持多天线阵列的反馈精度良好。