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：US08060126B2

公开(公告)日：2011-11-15

申请号：US12018887

申请日：2008-01-24

Applicant: Shuangfeng Han ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Han-Lim Lee

Inventor： Shuangfeng Han ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Han-Lim Lee

IPC: H04B7/00 ,  H04B1/66 ,  H04C7/02

CPC classification number: H04W52/42 ,  H04W52/20

Abstract: Disclosed is a device for allocating transmission power using a symbol error rate (SER) for orthogonal space-time block codes (OSTBC) in a wireless communication system. The device includes: a plurality of antennas, which are distributed geographically and independently linked to a central processing unit; a receiver to select an optimum subset of the SER performance, using a preset power allocation to each of available antenna subset combinations, and sending the selected subset to a transmitter; and a central processing unit to allocate power by applying an OSTBC symbol having a unit average power to the optimum subset from the receiver.

Abstract translation: 公开了一种用于在无线通信系统中使用正交空时块码（OSTBC）的符号错误率（SER）来分配发送功率的装置。 该设备包括：多个天线，分布在地理上和独立地连接到中央处理单元; 使用对每个可用天线子组合的预设功率分配以及将所选择的子集发送到发射机的接收机来选择SER性能的最佳子集; 以及中央处理单元，通过从接收器向最佳子集应用具有单位平均功率的OSTBC符号来分配功率。

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。

公开(公告)号：US20080248805A1

公开(公告)日：2008-10-09

申请号：US12080995

申请日：2008-04-07

Applicant: Shuangfeng Han ,  Seong-Taek Hwang

Inventor： Shuangfeng Han ,  Seong-Taek Hwang

IPC: H04Q7/20

CPC classification number: H04W16/02 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/006 ,  H04W16/10

Abstract: Disclosed is a method and an apparatus for assigning a subcarrier to a subcell serviced by a Distributed Antenna System (DAS) employing an Orthogonal Frequency Division Multiplexing Access (OFDMA) scheme in a broadband wireless access system. The method includes dividing an overall frequency band into multiple subcarrier bands, assigning the multiple subcarrier bands to respective Base Stations (BSs) without overlap among the BSs adjacent to one another in assigning the multiple subcarrier bands corresponding to the divided overall frequency band to the respective BSs and dividing the assigned subcarrier bands and selectively assigning the divided subcarrier bands to multiple Remote Stations (RSs) connected with the BSs through optical fibers.

Abstract translation: 公开了一种用于在宽带无线接入系统中将子载波分配给由使用正交频分复用接入（OFDMA）方案的分布式天线系统（DAS）服务的子小区的方法和装置。 该方法包括：将整个频带划分成多个子载波频带，将多个子载波频带分配给相应的基站（BS），在彼此相邻的BS之间不重叠，将与划分的总频带对应的多个子载波频带分配给相应的基站 BS并分配所分配的子载波频带，并且通过光纤选择性地将划分的子载波频带分配给与BS相连的多个远程站（RS）。

公开(公告)号：US20080182611A1

公开(公告)日：2008-07-31

申请号：US12018887

申请日：2008-01-24

Applicant: Shuangfeng Han ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Han-Lim Lee

Inventor： Shuangfeng Han ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Han-Lim Lee

IPC: H04B7/00

CPC classification number: H04W52/42 ,  H04W52/20

Abstract: Disclosed is a device for allocating transmission power using a symbol error rate (SER) for orthogonal space-time block codes (OSTBC) in a wireless communication system. The device includes: a plurality of antennas, which are distributed geographically and independently linked to a central processing unit; a receiver to select an optimum subset of the SER performance, using a preset power allocation to each of available antenna subset combinations, and sending the selected subset to a transmitter; and a central processing unit to allocate power by applying an OSTBC symbol having a unit average power to the optimum subset from the receiver.

Abstract translation: 公开了一种用于在无线通信系统中使用正交空时块码（OSTBC）的符号错误率（SER）来分配发送功率的装置。 该设备包括：多个天线，分布在地理上和独立地连接到中央处理单元; 使用对每个可用天线子组合的预设功率分配以及将所选择的子集发送到发射机的接收机来选择SER性能的最佳子集; 以及中央处理单元，通过从接收器向最佳子集应用具有单位平均功率的OSTBC符号来分配功率。