公开(公告)号：US20130051485A1

公开(公告)日：2013-02-28

申请号：US13594370

申请日：2012-08-24

Applicant: Rakesh TAORI ,  Shuangfeng Han

Inventor： Rakesh TAORI ,  Shuangfeng Han

IPC: H04J11/00

CPC classification number: H04L27/2634 ,  H04L27/2601 ,  H04L27/2626 ,  H04L27/2646 ,  H04W72/04

Abstract: A communication apparatus and method in a wireless communication system that support multiple Orthogonal Frequency Division Multiplexing (OFDM) parameter sets. A method includes determining a respective OFDM parameter set for each of multiple Radio Frequency (RF) chains; and processing an OFDM signal in each of the multiple RF chains based on a parameter value defined in the respective OFDM parameter set.

Abstract translation: 一种支持多个正交频分复用（OFDM）参数集的无线通信系统中的通信装置和方法。 一种方法包括为多个射频（RF）链中的每一个确定相应的OFDM参数集合; 以及基于在各个OFDM参数集中定义的参数值来处理所述多个RF链中的每一个中的OFDM信号。

公开(公告)号：US20110092232A1

公开(公告)日：2011-04-21

申请号：US12907291

申请日：2010-10-19

Applicant: Sang-Woo LEE ,  Hee-Won KANG ,  Shuangfeng HAN ,  David MAZZARESE

Inventor： Sang-Woo LEE ,  Hee-Won KANG ,  Shuangfeng HAN ,  David MAZZARESE

IPC: H04B15/00

CPC classification number: H04B7/0639 ,  H04B17/327 ,  H04B17/345

Abstract: Provided is a device and a method for eliminating inter-cell interference in Multiple Input Multiple Output (MIMO) wireless communication system. The method for operating a user equipment for eliminating the inter-cell interference includes determining one or more optimum bands among bands not requested to be restricted from a neighboring cell, determining at least one of band and Precoding Matrix Index (PMI) to be requested to be restricted to the neighboring cell among the determined one or more optimum bands, and feeding back at least one of the band and PMI to be requested to be restricted to the neighboring cell to a serving base station.

Abstract translation: 提供了一种用于消除多输入多输出（MIMO）无线通信系统中的小区间干扰的装置和方法。 用于操作用于消除小区间干扰的用户设备的方法包括：确定从邻近小区未被请求的限制的频带中的一个或多个最佳频带，确定要请求的频带和预编码矩阵索引（PMI）中的至少一个 在所确定的一个或多个最佳频带中被限制到相邻小区，并将要被限制的要被限制的频带和PMI中的至少一个反馈给服务基站。

公开(公告)号：US20110032872A1

公开(公告)日：2011-02-10

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: H04W40/00

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：US20100002643A1

公开(公告)日：2010-01-07

申请号：US12498585

申请日：2009-07-07

Applicant: Shuangfeng Han ,  Eun-Yong Kim ,  Hyeon-Woo Lee ,  Ho-Kyu Choi ,  Joon-Ho Park ,  David Mazzarese ,  Bruno Clerckx ,  Song-Nam Hong

Inventor： Shuangfeng Han ,  Eun-Yong Kim ,  Hyeon-Woo Lee ,  Ho-Kyu Choi ,  Joon-Ho Park ,  David Mazzarese ,  Bruno Clerckx ,  Song-Nam Hong

IPC: H04B15/00 ,  H04B7/02 ,  H04W28/00

CPC classification number: H04B7/0417 ,  H04B7/024 ,  H04B7/0486 ,  H04B7/063 ,  H04B7/0639 ,  H04J11/0056

Abstract: A method for operating a Mobile Station (MS) in a Multiple Input Multiple Output (MIMO) wireless communication system is provided. The method includes measuring channel quality for a serving Base Station (BS), if the channel quality is less than a threshold, measuring interference power from one or more neighbor BSs, determining a Precoding Matrix Index (PMI) and a priority metric for each neighbor BS, and feeding back at least one of the PMI, a PMI type indicator, the priority metric, and the channel quality to the serving BS.

Abstract translation: 提供了一种用于在多输入多输出（MIMO）无线通信系统中操作移动台（MS）的方法。 该方法包括测量服务基站（BS）的信道质量，如果信道质量小于阈值，测量来自一个或多个相邻BS的干扰功率，确定每个邻居的预编码矩阵索引（PMI）和优先权度量 BS，并且向服务BS反馈PMI，PMI类型指示符，优先级度量和信道质量中的至少一个。

公开(公告)号：US09001918B2

公开(公告)日：2015-04-07

申请号：US13594370

申请日：2012-08-24

Applicant: Rakesh Taori ,  Shuangfeng Han

Inventor： Rakesh Taori ,  Shuangfeng Han

IPC: H04L27/10 ,  H04L27/26

CPC classification number: H04L27/2634 ,  H04L27/2601 ,  H04L27/2626 ,  H04L27/2646 ,  H04W72/04

Abstract: A communication apparatus and method in a wireless communication system that support multiple Orthogonal Frequency Division Multiplexing (OFDM) parameter sets. A method includes determining a respective OFDM parameter set for each of multiple Radio Frequency (RF) chains; and processing an OFDM signal in each of the multiple RF chains based on a parameter value defined in the respective OFDM parameter set.

Abstract translation: 一种支持多个正交频分复用（OFDM）参数集的无线通信系统中的通信装置和方法。 一种方法包括为多个射频（RF）链中的每一个确定相应的OFDM参数集合; 以及基于在各个OFDM参数集中定义的参数值来处理所述多个RF链中的每一个中的OFDM信号。

公开(公告)号：US20120327872A1

公开(公告)日：2012-12-27

申请号：US13531308

申请日：2012-06-22

Applicant: Shuangfeng Han

Inventor： Shuangfeng Han

IPC: H04W72/02

CPC classification number: H04W72/046 ,  H01Q3/28 ,  H04B7/043 ,  H04B7/0617 ,  H04L1/0006

Abstract: In one embodiment, a method for network entry in a wireless communication system includes acquiring ranging code configuration information, which represents the corresponding relationship among multiple beam vectors, multiple ranging sequences, and multiple ranging channels, determining an optimal downlink beam vector, and transmitting one of the ranging sequences corresponding to the optimal downlink beam vector to a Base Station (BS) through one of the ranging channels corresponding to the optimal downlink beam vector.

Abstract translation: 在一个实施例中，一种用于在无线通信系统中进行网络输入的方法包括获取测距码配置信息，其表示多个波束矢量，多个测距序列和多个测距信道之间的对应关系，确定最佳下行链路波束向量，并发送一个 通过对应于最佳下行链路波束向量的测距信道之一，将与最佳下行链路波束向量相对应的测距序列发送到基站（BS）。

公开(公告)号：US20120183028A1

公开(公告)日：2012-07-19

申请号：US13351400

申请日：2012-01-17

Applicant: Shuangfeng HAN ,  Hyun-Jeong KANG ,  Su-Ryong JEONG

Inventor： Shuangfeng HAN ,  Hyun-Jeong KANG ,  Su-Ryong JEONG

IPC: H04B7/00 ,  H04B1/38

CPC classification number: H04B7/022 ,  H04W48/12 ,  H04W48/16 ,  H04W88/085

Abstract: An apparatus and a method for ranging in a distributed antenna system are provided. A method for an operation of a Mobile Station (MS) in a distributed antenna system includes obtaining per-group ranging code configuration information indicating a ranging code allocation for each antenna port group, determining an antenna port group that the MS belongs to, and performing a ranging procedure by one of a plurality of ranging codes allocated to the antenna port group that the MS belongs to.

Abstract translation: 提供了一种在分布式天线系统中测距的装置和方法。 一种用于在分布式天线系统中的移动站（MS）的操作的方法包括获得每组天线端口组指示测距码分配的每组测距码配置信息，确定该MS所属的天线端口组，并执行 通过分配给MS所属的天线端口组的多个测距码之一进行测距过程。

公开(公告)号：US08149933B2

公开(公告)日：2012-04-03

申请号：US12040023

申请日：2008-02-29

Applicant: Shuangfeng Han ,  Seong-Taek Hwang ,  Zhunhui Zhou ,  Jing Wang ,  Ming Zhao ,  Zheng Xu

Inventor： Shuangfeng Han ,  Seong-Taek Hwang ,  Zhunhui Zhou ,  Jing Wang ,  Ming Zhao ,  Zheng Xu

IPC: H04K1/10

CPC classification number: H04L27/2601 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0037 ,  H04L5/0062 ,  H04L5/023

Abstract: Disclosed is a method and an apparatus for subchannel assignment for suppressing inter-antenna interference in an Orthogonal Frequency Division Multiplexing Access (OFDMA) system based distributed wireless communication system equipped with antennas that are randomly distributed in a geographical manner and can simultaneously communicate with multiple Subscriber Stations (SSs). The method includes selecting and obtaining access to distributed antennas which satisfy the data transmission rate that an SS requires and with which the SS can communicate; re-queuing a distributed antenna having the maximum transmitted power within the same cell in high priority; and assigning subchannels to the relevant distributed antennas in an order from the relevant distributed antenna having the high priority.

Abstract translation: 公开了一种用于抑制基于正交频分复用接入（OFDMA）系统的分布式无线通信系统中的天线间干扰的方法和装置，所述分布式无线通信系统配备有以地理方式随机分布并可同时与多个用户通信的天线 车站（SS）。 该方法包括：选择和获得满足SS要求的数据传输速率并与SS通信的分布式天线; 将具有最高发送功率的分布式天线重新排队在高优先级的同一小区内; 以及从具有高优先级的相关分布式天线的顺序向相关的分布式天线分配子信道。

公开(公告)号：US20110103271A1

公开(公告)日：2011-05-05

申请号：US12915814

申请日：2010-10-29

Applicant: Shuangfeng HAN ,  Chi-Woo LIM

Inventor： Shuangfeng HAN ,  Chi-Woo LIM

IPC: H04J3/00 ,  H04W4/00

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：US20080212703A1

公开(公告)日：2008-09-04

申请号：US12040023

申请日：2008-02-29

Applicant: Shuangfeng HAN ,  Seong-Taek HWANG ,  Zhunhui ZHOU ,  Jing Wang ,  Ming Zhao ,  Zheng Xu

Inventor： Shuangfeng HAN ,  Seong-Taek HWANG ,  Zhunhui ZHOU ,  Jing Wang ,  Ming Zhao ,  Zheng Xu

IPC: H04L27/28

CPC classification number: H04L27/2601 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0037 ,  H04L5/0062 ,  H04L5/023

Abstract: Disclosed is a method and an apparatus for subchannel assignment for suppressing inter-antenna interference in an Orthogonal Frequency Division Multiplexing Access (OFDMA) system based distributed wireless communication system equipped with antennas that are randomly distributed in a geographical manner and can simultaneously communicate with multiple Subscriber Stations (SSs). The method includes selecting and obtaining access to distributed antennas which satisfy the data transmission rate that an SS requires and with which the SS can communicate; re-queuing a distributed antenna having the maximum transmitted power within the same cell in high priority; and assigning subchannels to the relevant distributed antennas in an order from the relevant distributed antenna having the high priority.

Abstract translation: 公开了一种用于抑制基于正交频分复用接入（OFDMA）系统的分布式无线通信系统中的天线间干扰的方法和装置，所述分布式无线通信系统配备有以地理方式随机分布并可同时与多个用户通信的天线 车站（SS）。 该方法包括：选择和获得满足SS要求的数据传输速率并与SS通信的分布式天线; 将具有最高发送功率的分布式天线重新排队在高优先级的同一小区内; 以及从具有高优先级的相关分布式天线的顺序向相关的分布式天线分配子信道。