公开(公告)号：US09008213B2

公开(公告)日：2015-04-14

申请号：US12661155

申请日：2010-03-11

Applicant: Shuangfeng Han ,  Hyeon-Woo Lee ,  Ho-Kyu Choi ,  Mi-Hyun Lee

Inventor： Shuangfeng Han ,  Hyeon-Woo Lee ,  Ho-Kyu Choi ,  Mi-Hyun Lee

IPC: H04B15/00 ,  H04B7/02 ,  H04B7/06 ,  H04J11/00 ,  H04L25/03

CPC classification number: H04B7/024 ,  H04B7/0639 ,  H04J11/0033 ,  H04J11/0053 ,  H04L25/03343 ,  H04L2025/03808

Abstract: A multiple antenna system including a mobile station and a base station are operable to perform a method for transmitting control information for interference mitigation. A Mobile Station (MS) can transmit control information for interference mitigation. The MS determines a first Precoding Matrix Index (PMI) and a second PMI for interference from an adjacent Base Station (BS). Based on a correlation level from correlation values between one of the first PMI and second PMI and the remaining PMIs in the codebook, the MS determines a level of a subset of PMIs, and feeds back information indicating the correlation level.

Abstract translation: 包括移动站和基站的多天线系统可操作以执行用于发送用于干扰减轻的控制信息的方法。 移动台（MS）可以发送干扰减轻的控制信息。 MS确定来自相邻基站（BS）的第一预编码矩阵索引（PMI）和第二PMI用于干扰。 基于来自第一PMI和第二PMI中的一个与码本中的其余PMI之间的相关值的相关级，MS确定PMI的子集的级别，并且反馈指示相关级别的信息。

公开(公告)号：US08576776B2

公开(公告)日：2013-11-05

申请号：US12806150

申请日：2010-08-06

Applicant: Shuangfeng Han ,  Zhen Wang ,  Ho-Kyu Choi ,  Cheng Shan

Inventor： Shuangfeng Han ,  Zhen Wang ,  Ho-Kyu Choi ,  Cheng Shan

IPC: H04W4/00

CPC classification number: H04B7/065 ,  H04B7/0639

Abstract: A method and apparatus reduce overhead of feedback in a closed loop Multiple Input Multiple Output (MIMO) system. A controller feeds back the long-term Precoder Matrix Index (PMI) to a serving base station under direction of the serving base station when the long term PMI feedback transmission is required, generates a new codebook using the long term PMI, and determines a short term PMI from the new codebook. A feedback transmitter feeds back the short-term PMI to the serving base station.

Abstract translation: 一种方法和装置降低了闭环多输入多输出（MIMO）系统中反馈的开销。 当需要长期PMI反馈传输时，控制器在服务基站的指示下向服务基站反馈长期预编码矩阵索引（PMI），使用长期PMI生成新的码本，并且确定短 来自新码本的PMI。 反馈发射机将短期PMI反馈给服务基站。

公开(公告)号：US08542635B2

公开(公告)日：2013-09-24

申请号：US12915814

申请日：2010-10-29

Applicant: Shuangfeng Han ,  Chi-Woo Lim

Inventor： Shuangfeng Han ,  Chi-Woo Lim

IPC: H04W72/04 ,  H04B7/06

CPC classification number: H04B7/024 ,  H04B17/12

Abstract: A calibration apparatus and a calibration method for multicell Multiple Input Multiple Output (MIMO) transmission in a multiple antenna system are provided. More particularly, an operating method of a Mobile Station (MS) for performing calibration for multicell MIMO transmission in a multiple antenna system includes negotiating a multi-Base Station (BS) joint processing with a BS, receiving a control message including information instructing multi-BS calibration for sounding based on the multi-BS joint processing, from the BS; when receiving the control message involving the multi-BS joint processing, generating a second sounding sequence by mapping estimated phases of downlink channels per subcarrier of BSs to a first sounding sequence allocated from the BS, and transmitting the second sounding sequence, including the phases of the downlink channels per subcarrier, over a sounding symbol interval with respect to each of the BSs involving the multi-BS joint processing. Hence, feedback overhead in the calibration of the multicell MIMO transmission can be reduced.

Abstract translation: 提供了一种用于多天线系统中的多输入多输入多输出（MIMO）传输的校准装置和校准方法。 更具体地说，用于在多天线系统中进行多单元MIMO传输的校准的移动台（MS）的操作方法包括：与BS协商多基站（BS）联合处理，接收包括指示多台天线的信息的控制消息， 基于BS的校准基于多BS联合处理，从BS; 当接收到涉及多BS联合处理的控制消息时，通过将BS的每个子载波的下行链路信道的估计相位映射到从BS分配的第一探测序列，并发送第二探测序列，生成第二探测序列， 相对于涉及多BS联合处理的每个BS的探测符号间隔，每个子载波的下行链路信道。 因此，可以减少多单元MIMO传输的校准中的反馈开销。

公开(公告)号：US20120231830A1

公开(公告)日：2012-09-13

申请号：US13415730

申请日：2012-03-08

Applicant: Su-Ryong Jeong ,  Sung-Eun Park ,  Hyun-Kyu Yu ,  Chi-Woo Lim ,  Shuangfeng Han

Inventor： Su-Ryong Jeong ,  Sung-Eun Park ,  Hyun-Kyu Yu ,  Chi-Woo Lim ,  Shuangfeng Han

IPC: H04W72/02 ,  H04W24/02

CPC classification number: H04W48/12 ,  H04W48/20 ,  H04W72/042 ,  H04W72/082

Abstract: An apparatus and method for initial ranging in a wireless communication system including a heterogeneous network. An operation of a terminal includes selecting a serving cell considering a biased value of a base station applying range expansion. The operation also includes receiving ranging code classification information and threshold information associated with the serving cell. The operation further includes, if a channel quality with the serving cell is less than the threshold, selecting one a plurality of poor-expected-ranging codes indicated by the ranging code classification information, and performing initial ranging using the selected poor-expected-ranging code.

Abstract translation: 一种用于包括异构网络的无线通信系统中的初始测距的装置和方法。 终端的操作包括考虑基站施加范围扩展的偏置值来选择服务小区。 该操作还包括接收测距码分类信息和与服务小区相关联的阈值信息。 该操作还包括：如果与服务小区的信道质量小于阈值，则选择由测距码分类信息指示的多个不良预期测距码中的一个，并且使用所选择的预期不合格范围进行初始测距 码。

公开(公告)号：US20120182897A1

公开(公告)日：2012-07-19

申请号：US13353186

申请日：2012-01-18

Applicant: Shuangfeng Han

Inventor： Shuangfeng Han

IPC: H04W72/04 ,  H04W24/00

CPC classification number: H04W48/20 ,  H04W72/0426 ,  H04W84/045

Abstract: An apparatus and a method for manage network entry in a heterogeneous network (HetNet). In the method for network entry of a terminal in a HetNet, a base station access signal for network entry is transmitted to a serving base station. A response message is received from the serving base station. An uplink parameter is controlled based on an indication of the serving base station included in the response message. An access request message is generated and transmitted to the serving base station. A downlink response message including information regarding a selected serving base station is received from the serving base station. An access response message including information for network entry is received from the selected serving base station. A network entry procedure is performed with the selected serving base station.

Abstract translation: 用于管理异构网络（HetNet）中的网络入口的装置和方法。 在HetNet中的终端的网络入口方法中，将用于网络入口的基站接入信号发送到服务基站。 从服务基站接收到响应消息。 基于响应消息中包括的服务基站的指示来控制上行链路参数。 生成访问请求消息并将其发送到服务基站。 从服务基站接收包括关于所选择的服务基站的信息的下行响应消息。 从所选择的服务基站接收包括用于网络入口的信息的接入响应消息。 对所选择的服务基站执行网络输入过程。

公开(公告)号：US20100232539A1

公开(公告)日：2010-09-16

申请号：US12661155

申请日：2010-03-11

Applicant: Shuangfeng Han ,  Hyeon-Woo Lee ,  Ho-Kyu Choi ,  Mi-Hyun Lee

Inventor： Shuangfeng Han ,  Hyeon-Woo Lee ,  Ho-Kyu Choi ,  Mi-Hyun Lee

IPC: H04B15/00

CPC classification number: H04B7/024 ,  H04B7/0639 ,  H04J11/0033 ,  H04J11/0053 ,  H04L25/03343 ,  H04L2025/03808

Abstract: A multiple antenna system including a mobile station and a base station are operable to perform a method for transmitting control information for interference mitigation. A Mobile Station (MS) can transmit control information for interference mitigation. The MS determines a first Precoding Matrix Index (PMI) and a second PMI for interference from an adjacent Base Station (BS). Based on a correlation level from correlation values between one of the first PMI and second PMI and the remaining PMIs in the codebook, the MS determines a level of a subset of PMIs, and feeds back information indicating the correlation level.

Abstract translation: 包括移动站和基站的多天线系统可操作以执行用于发送用于干扰减轻的控制信息的方法。 移动台（MS）可以发送干扰减轻的控制信息。 MS确定来自相邻基站（BS）的第一预编码矩阵索引（PMI）和第二PMI用于干扰。 基于来自第一PMI和第二PMI中的一个与码本中的其余PMI之间的相关值的相关级，MS确定PMI的子集的级别，并且反馈指示相关级别的信息。