公开(公告)号：US09072054B2

公开(公告)日：2015-06-30

申请号：US13721780

申请日：2012-12-20

Applicant: Samsung Electronics Co. Ltd.

Inventor： Hyoungju Ji ,  Younsun Kim ,  Joonyoung Cho ,  Seunghoon Choi ,  Kiil Kim ,  Hyojin Lee

IPC: H04W52/04 ,  H04W52/38 ,  H04W52/18 ,  H04W52/14 ,  H04W52/24

CPC classification number: H04W52/04 ,  H04W52/143 ,  H04W52/243 ,  H04W52/38

Abstract: A downlink power control method and apparatus for improving downlink power efficiency gain in an Orthogonal Frequency Division Multiplexing (OFDM) system is provided. The downlink power control method includes transmitting a downlink data channel at a normal subframe according to first downlink power information for the normal subframe, and transmitting the downlink data channel at an Almost Blank Subframe (ABS) according to second downlink power information for the ABS, wherein the first downlink power information for the normal subframe and the second downlink power information for the ABS differ from each other. The downlink power control method and apparatus is capable of regulating inter-cell interference variation between contiguous symbols at a predetermined level in a subframe at a terminal of a neighbor cell and making it possible to schedule the UE receiving the low power data channel using the power ratio of the feedbacks from the UE.

Abstract translation: 提供了一种用于改善正交频分复用（OFDM）系统中的下行链路功率效率增益的下行链路功率控制方法和装置。 下行链路功率控制方法包括根据用于正常子帧的第一下行链路功率信息在正常子帧发送下行链路数据信道，并且根据ABS的第二下行链路功率信息，在几乎空白子帧（ABS）下发送下行链路数据信道， 其中用于正常子帧的第一下行链路功率信息和用于ABS的第二下行链路功率信息彼此不同。 下行链路功率控制方法和装置能够调节相邻小区的终端的子帧中预定级别的连续符号之间的小区间干扰变化，并且使得能够使用该功率来调度UE接收低功率数据信道 来自UE的反馈比例。

公开(公告)号：US08942125B2

公开(公告)日：2015-01-27

申请号：US13625113

申请日：2012-09-24

Applicant: Samsung Electronics Co. Ltd.

Inventor： Hyojin Lee ,  Juho Lee ,  Kiil Kim ,  Younsun Kim

IPC: H04L12/26 ,  H04L25/02 ,  H04L5/00

CPC classification number: H04W72/085 ,  H04B7/024 ,  H04B7/0626 ,  H04L5/0007 ,  H04L5/0035 ,  H04L5/0048 ,  H04L25/0204 ,  H04W24/10 ,  H04W72/042

Abstract: A method and an apparatus for transmitting and receiving a feedback signal in a cellular mobile communication system is provided. The method of transmitting feedback in a Cooperative Multi-Point (CoMP) system, includes receiving feedback set information including allocation information of a Channel Status Information Reference Signal (CSI-RS) transmitted for estimating a channel of a User Equipment (UE), receiving IDentification (ID) information for identifying a CoMP set including CSI-RS allocation information from a cell operating in a CoMP mode, extracting the CoMP set using the ID information and a feedback set, detecting a first feedback mode and first feedback timing with a first CSI-RS not included in the CoMP set among CSI-RSs included in the feedback set, and generating and transmitting feedback with respect to the first CSI-RS according to the detected first feedback mode and the first feedback timing.

Abstract translation: 提供了一种用于在蜂窝移动通信系统中发送和接收反馈信号的方法和装置。 在协同多点（CoMP）系统中发送反馈的方法包括：接收反馈集信息，包括发送用于估计用户设备（UE）的信道的信道状态信息参考信号（CSI-RS）的分配信息，接收 用于识别来自以CoMP模式运行的单元的CSI-RS分配信息的CoMP集合的识别（ID）信息，使用ID信息提取CoMP集合和反馈集合，用第一个反馈模式和第一反馈模式检测第一反馈模式和第一反馈定时 CSI-RS不包括在包括在反馈集合中的CSI-RS之间的CoMP集合中，并且根据检测到的第一反馈模式和第一反馈定时来生成和发送关于第一CSI-RS的反馈。

公开(公告)号：US20140301323A1

公开(公告)日：2014-10-09

申请号：US14309456

申请日：2014-06-19

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyojin LEE ,  Younsun Kim ,  Kiil Kim ,  Youngbum Kim

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/0406 ,  H04B7/024 ,  H04B17/24 ,  H04B17/309 ,  H04B17/336 ,  H04B17/382 ,  H04L5/0035 ,  H04L5/0048 ,  H04W28/04 ,  H04W48/20 ,  H04W72/082 ,  H04W72/085

Abstract: A feedback method and apparatus is provided for facilitating feedback in a Cooperative Multi-Point (CoMP) system in which multiple base stations cooperate with each other for downlink transmission to a terminal. The feedback method of a terminal includes determining whether the terminal is operating in cooperative multi-point mode for receiving data from a plurality of cells; estimating, when the terminal is operating in cooperative multi-point mode, channels of the cells belonging to a measurement set based on channel status information reference signals for the cells; selecting at least one best cell based on a signal-to-interference plus noise ratio based on the estimated channels; and feeding back a cell index and channel information of the best cell.

Abstract translation: 提供了一种反馈方法和装置，用于促进多个基站彼此协作以便下行链路传输到终端的协作多点（CoMP）系统中的反馈。 终端的反馈方法包括：确定终端是否以协作多点模式操作，用于从多个小区接收数据; 当终端以协同多点模式工作时，基于小区的信道状态信息参考信号估计属于测量集合的小区的信道; 基于估计的信道，基于信号与干扰加噪声比选择至少一个最佳小区; 并反馈最佳小区的小区索引和信道信息。