公开(公告)号：US07729333B2

公开(公告)日：2010-06-01

申请号：US11474568

申请日：2006-06-26

Applicant: Jing Wang ,  Haibo Zheng ,  Yong-Xing Zhou ,  Jianjun Li ,  Sung-Jin Kim

Inventor： Jing Wang ,  Haibo Zheng ,  Yong-Xing Zhou ,  Jianjun Li ,  Sung-Jin Kim

IPC: H04B7/212

CPC classification number: H04B7/0632 ,  H04B7/0452 ,  H04B7/0617

Abstract: In a method for selecting a transmission target terminal in a zero-forcing beamforming algorithm, information about a channel capacity of each terminal is received from all K terminals. A terminal with a largest channel capacity is selected as an initial transmission target terminal. A determination is made as to whether the number of currently selected terminals, i, is equal to the predefined number N. If the number of currently selected terminals, i, is different from the predefined number N, information about channel capacities of remaining terminals except previously selected transmission target terminals is received until i is equal to N and a terminal with a largest channel capacity is selected as a transmission target terminal.

Abstract translation: 在用于在迫零波束成形算法中选择发送目标终端的方法中，从所有K个终端接收关于每个终端的信道容量的信息。 选择具有最大信道容量的终端作为初始发送目标终端。 确定当前所选择的终端i的数量是否等于预定数量N.如果当前选择的终端i的数量与预定义数量N不同，则除了剩余终端的信道容量之外的信息，除了 接收先前选择的发送目标终端，直到i等于N，并且选择具有最大信道容量的终端作为发送目标终端。

公开(公告)号：US08315346B2

公开(公告)日：2012-11-20

申请号：US11725019

申请日：2007-03-16

Applicant: Ho-Jin Kim ,  Sung-Jin Kim ,  Jianjun Li ,  Yong-Xing Zhou

Inventor： Ho-Jin Kim ,  Sung-Jin Kim ,  Jianjun Li ,  Yong-Xing Zhou

IPC: H04L7/00

CPC classification number: H04B7/0417 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0645 ,  H04B7/0647 ,  H04B7/0663 ,  H04L1/0026 ,  H04L1/003 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

Abstract: A method for transmitting/receiving feedback information in a multi-antenna system using a closed-loop scheme supporting multiple users, and a feedback system supporting the same. Multiple feedback protocol scenarios are predefined on the basis of communication environments affecting feedback information configurations. The feedback information is transmitted in a feedback protocol scenario determined by a communication environment. The feedback information is constructed with information required by the communication environment.

Abstract translation: 一种用于使用支持多个用户的闭环方案在多天线系统中发送/接收反馈信息的方法，以及支持多个用户的反馈系统。 多反馈协议方案是在影响反馈信息配置的通信环境的基础上预先定义的。 在由通信环境确定的反馈协议场景中传送反馈信息。 反馈信息由通信环境所需的信息构成。

公开(公告)号：US07881396B2

公开(公告)日：2011-02-01

申请号：US12717194

申请日：2010-03-04

Applicant: Yong-Xing Zhou ,  Jong-Han Kim

Inventor： Yong-Xing Zhou ,  Jong-Han Kim

IPC: H04B7/02

CPC classification number: H04L25/0226 ,  H04B7/0413 ,  H04L1/0618 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2628 ,  H04L27/2656

Abstract: A method and apparatus for transmitting a preamble for frame synchronization and channel estimation in a MIMO-OFDM communication system are provided. An OFDM communication system using Q transmit antennas generates a base preamble sequence including a CP and an orthogonal sequence. If Q≦a predetermined number M, a preamble sequence for a kth antenna is S(t−(k−1)T/M). If Q>M and k≦M, the preamble sequence transmitted for the kth antenna is S(t−(k−1)T/M). If Q>M and k>M, the preamble sequence for the kth antenna is (−1)(PS-1)S(t−(k−M−1)T/M). Here, S(t) is the orthogonal sequence, T is the period of the orthogonal sequence, and PS is an index indicating a transmission period of the preamble sequence. The preamble sequences are at least twice transmitted from the Q transmit antennas.

Abstract translation: 提供了一种用于在MIMO-OFDM通信系统中发送用于帧同步和信道估计的前同步码的方法和装置。 使用Q发射天线的OFDM通信系统产生包括CP和正交序列的基本前同步码序列。 如果Q＆nlE;预定数M，第k个天线的前同步码序列是S（t-（k-1）T / M）。 如果Q> M和k＆nlE; M，则对于第k个天线发射的前同步码序列是S（t-（k-1）T / M）。 如果Q> M和k> M，则第k个天线的前同步码序列为（-1）（PS-1）S（t-（k-M-1）T / M）。 这里，S（t）是正交序列，T是正交序列的周期，PS是表示前导码序列的发送周期的索引。 前导码序列至少从Q个发射天线发射两次。

公开(公告)号：US20100195480A1

公开(公告)日：2010-08-05

申请号：US12717194

申请日：2010-03-04

Applicant: Yong-Xing ZHOU ,  Jong-Han Kim

Inventor： Yong-Xing ZHOU ,  Jong-Han Kim

IPC: H04L27/00 ,  H04L27/06 ,  H04J11/00

CPC classification number: H04L25/0226 ,  H04B7/0413 ,  H04L1/0618 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2628 ,  H04L27/2656

Abstract: A method and apparatus for transmitting a preamble for frame synchronization and channel estimation in a MIMO-OFDM communication system are provided. An OFDM communication system using Q transmit antennas generates a base preamble sequence including a CP and an orthogonal sequence. If Q≦a predetermined number M, a preamble sequence for a kth antenna is S(t−(k−1)T/M). If Q>M and k≦M, the preamble sequence transmitted for the kth antenna is S(t−(k−1)T/M). If Q>M and k>M, the preamble sequence for the kth antenna is (−1)(PS-1)S(t−(k−M−1)T/M). Here, S(t) is the orthogonal sequence, T is the period of the orthogonal sequence, and PS is an index indicating a transmission period of the preamble sequence. The preamble sequences are at least twice transmitted from the Q transmit antennas.

Abstract translation: 提供了一种用于在MIMO-OFDM通信系统中发送用于帧同步和信道估计的前同步码的方法和装置。 使用Q发射天线的OFDM通信系统产生包括CP和正交序列的基本前同步码序列。 如果Q＆nlE;预定数M，第k个天线的前同步码序列是S（t-（k-1）T / M）。 如果Q> M和k＆nlE; M，则对于第k个天线发射的前同步码序列是S（t-（k-1）T / M）。 如果Q> M和k> M，则第k个天线的前同步码序列为（-1）（PS-1）S（t-（k-M-1）T / M）。 这里，S（t）是正交序列，T是正交序列的周期，PS是表示前导码序列的发送周期的索引。 前导码序列至少从Q个发射天线发射两次。

公开(公告)号：US20080125122A1

公开(公告)日：2008-05-29

申请号：US11475806

申请日：2006-06-27

Applicant: Yong- Xing Zhou ,  Jianjun Li ,  Hao Chen ,  Zhigang Cao ,  Pingyi Fan ,  Won-Hyoung Park

Inventor： Yong- Xing Zhou ,  Jianjun Li ,  Hao Chen ,  Zhigang Cao ,  Pingyi Fan ,  Won-Hyoung Park

IPC: H04Q7/20 ,  G06F17/30

CPC classification number: H04M15/00 ,  G06Q30/0206

Abstract: Provided is a method in which a subscriber can receive a desired service at the lowest price in a heterogeneous network and a network provider can maximize its own revenue according to situation. A handoff to a target cell for a terminal is performed by considering a handoff probability as well as resource prices in current and target cells. In cells configuring the heterogeneous network, optimal resource price for each service is computed on the basis of demand and supply resources. An arrived call from the terminal is processed using the computed resource price.

Abstract translation: 提供一种方法，其中用户可以以异构网络中的最低价格接收期望的服务，并且网络提供商可以根据情况最大化其自己的收入。 通过考虑当前和目标小区中的切换概率以及资源价格来执行到终端的目标小区的切换。 在配置异构网络的小区中，每个业务的最优资源价格是根据需求和供应资源计算的。 使用计算出的资源价格处理来自终端的到达呼叫。

公开(公告)号：US20070253508A1

公开(公告)日：2007-11-01

申请号：US11785743

申请日：2007-04-19

Applicant: Yong-Xing Zhou ,  Sung-Jin Kim ,  JianJun Li ,  Ho-Jin Kim

Inventor： Yong-Xing Zhou ,  Sung-Jin Kim ,  JianJun Li ,  Ho-Jin Kim

IPC: H04L1/02

CPC classification number: H04B7/0626 ,  H04L1/0026

Abstract: An apparatus and method for selecting an effective channel in a multi-user MIMO system are provided, in which a receiver receives pilot signals from a transmitter, determines channel information indicating an antenna offering the best quality among a plurality of antennas using the pilot signals, and generates feedback information with the channel information, and the transmitter receives feedback information from a plurality of receivers, generates a channel matrix using the feedback information, and transmits data simultaneously to the plurality of receivers using the channel matrix.

Abstract translation: 提供了一种用于在多用户MIMO系统中选择有效信道的装置和方法，其中接收机从发射机接收导频信号，使用导频信号确定指示在多个天线中提供最佳质量的天线的信道信息， 并且生成具有信道信息的反馈信息，并且发送器从多个接收器接收反馈信息，使用反馈信息生成信道矩阵，并且使用信道矩阵同时向多个接收机发送数据。

公开(公告)号：US20070253507A1

公开(公告)日：2007-11-01

申请号：US11784770

申请日：2007-04-09

Applicant: Yong-Xing Zhou ,  Jianjun Li ,  Jae-Kwon Kim ,  Jiansong Gan ,  Jing Wang

Inventor： Yong-Xing Zhou ,  Jianjun Li ,  Jae-Kwon Kim ,  Jiansong Gan ,  Jing Wang

IPC: H04L1/02

CPC classification number: H04L1/0001 ,  H04L1/0002 ,  H04L1/0003 ,  H04L1/0625 ,  H04L1/0656

Abstract: A self-adaptive multiple-input multiple-output (MIMO) transmission/reception system includes a transmitter provided with a serial-to-parallel converter, channel encoders, a plurality of constellation mappers, and transmission power controllers, and a receiver provided with a transmission scheme selection device, a zero forcing/minimum mean square error (ZF/MMSE) detector, reception power controllers, constellation demappers, channel decoders and a parallel-to-serial converter. The transmission scheme selection device generates information regarding plural sets of information to be used, a constellation mapping scheme and transmission power and transmits the generated information to the associated units of the transmitter and receiver, thereby controlling the number of sub code streams, the constellation mapping scheme and the transmission power. The system and method provide superior performance and require minimal feedback information.

Abstract translation: 自适应多输入多输出（MIMO）发送/接收系统包括具有串并转换器，信道编码器，多个星座映射器和发射功率控制器的发射机，以及接收机， 传输方案选择装置，零强制/最小均方误差（ZF / MMSE）检测器，接收功率控制器，星座解映射器，信道解码器和并行到串行转换器。 发送方式选择装置生成关于要使用的多组信息，星座映射方式和发送功率的信息，并将生成的信息发送到发送方和接收方的关联单元，从而控制子码流的数量，星座映射 方案和传输功率。 该系统和方法提供卓越的性能并且需要最少的反馈信息。

公开(公告)号：US07995670B2

公开(公告)日：2011-08-09

申请号：US11802775

申请日：2007-05-24

Applicant: Ho-Jin Kim ,  Il-Han Kim ,  David J. Love ,  Seung-Young Park ,  Sung-Jin Kim ,  Yong-Xing Zhou

Inventor： Ho-Jin Kim ,  Il-Han Kim ,  David J. Love ,  Seung-Young Park ,  Sung-Jin Kim ,  Yong-Xing Zhou

IPC: H04B7/02

CPC classification number: H04B7/0452 ,  H04L1/0002 ,  H04L25/03343 ,  H04L2025/03426

Abstract: Provided are a data transmitting and receiving method for a multiple-input multiple-output (MIMO) communication system, and a transmitter and a receiver using the method. Accordingly, since precoding matrices of a codebook is constituted using a rotation matrix, expansion of the codebook is easy, and since each of the precoding matrices is determined according to the number of transmit antennas, the codebook is systematically created according to a system. In addition the codebook can be applied to even a correlated channel, and the minimum distance between precoding matrices can advantageously be maximized.

Abstract translation: 提供了一种用于多输入多输出（MIMO）通信系统的数据发送和接收方法，以及使用该方法的发送器和接收器。 因此，由于使用旋转矩阵构成码本的预编码矩阵，因此码本的扩展容易，并且由于根据发送天线的数量来确定每个预编码矩阵，所以根据系统系统地创建码本。 此外，码本可以应用于甚至相关信道，并且预编码矩阵之间的最小距离可以有利地被最大化。

公开(公告)号：US07936843B2

公开(公告)日：2011-05-03

申请号：US11784770

申请日：2007-04-09

Applicant: Yong-Xing Zhou ,  Jianjun Li ,  Jae-Kwon Kim ,  Jiansong Gan ,  Jing Wang

Inventor： Yong-Xing Zhou ,  Jianjun Li ,  Jae-Kwon Kim ,  Jiansong Gan ,  Jing Wang

IPC: H04L27/00

CPC classification number: H04L1/0001 ,  H04L1/0002 ,  H04L1/0003 ,  H04L1/0625 ,  H04L1/0656

Abstract: A self-adaptive multiple-input multiple-output (MIMO) transmission/reception system includes a transmitter provided with a serial-to-parallel converter, channel encoders, a plurality of constellation mappers, and transmission power controllers, and a receiver provided with a transmission scheme selection device, a zero forcing/minimum mean square error (ZF/MMSE) detector, reception power controllers, constellation demappers, channel decoders and a parallel-to-serial converter. The transmission scheme selection device generates information regarding plural sets of information to be used, a constellation mapping scheme and transmission power and transmits the generated information to the associated units of the transmitter and receiver, thereby controlling the number of sub code streams, the constellation mapping scheme and the transmission power. The system and method provide superior performance and require minimal feedback information.

Abstract translation: 自适应多输入多输出（MIMO）发送/接收系统包括具有串并转换器，信道编码器，多个星座映射器和发射功率控制器的发射机，以及接收机， 传输方案选择装置，零强制/最小均方误差（ZF / MMSE）检测器，接收功率控制器，星座解映射器，信道解码器和并行到串行转换器。 发送方式选择装置生成关于要使用的多组信息，星座映射方式和发送功率的信息，并将生成的信息发送到发送方和接收方的关联单元，从而控制子码流的数量，星座映射 方案和传输功率。 该系统和方法提供卓越的性能并且需要最少的反馈信息。

公开(公告)号：US07894409B2

公开(公告)日：2011-02-22

申请号：US11590095

申请日：2006-10-31

Applicant: Hyo-Sun Hwang ,  Yong-Xing Zhou ,  Dong-Jun Lee ,  Jung-Hoon Suh ,  Kyung-Hun Jang ,  Young-Soo Kim ,  Junfeng Jiang ,  Pingyi Fan ,  Zhigang Cao

Inventor： Hyo-Sun Hwang ,  Yong-Xing Zhou ,  Dong-Jun Lee ,  Jung-Hoon Suh ,  Kyung-Hun Jang ,  Young-Soo Kim ,  Junfeng Jiang ,  Pingyi Fan ,  Zhigang Cao

IPC: H04W4/00

CPC classification number: H04L47/10 ,  H04L47/115 ,  H04L47/14 ,  H04L47/27 ,  H04L47/283 ,  H04W24/06

Abstract: A method and apparatus for estimating available throughput of a fixed node in a mobile node of a communication network. The communication network includes fixed nodes connected to a router connected to at least one foreign network and mobile nodes connected to the fixed nodes. A second mobile node is selected from among mobile nodes connected to a fixed node whose available throughput is estimated in a first mobile node. An idle slot interval of the second mobile node connected to the fixed node is set. A transmission probability is measured in one slot interval of the second mobile node through an average of set idle slot intervals. Transmission information of the second mobile node is acquired using the measured transmission probability. The available throughput of the fixed node is estimated using the acquired transmission information.

Abstract translation: 一种用于估计通信网络的移动节点中的固定节点的可用吞吐量的方法和装置。 通信网络包括连接到连接到至少一个外部网络的路由器和连接到固定节点的移动节点的固定节点。 从连接到在第一移动节点中估计可用吞吐量的固定节点的移动节点中选择第二移动节点。 连接到固定节点的第二移动节点的空闲时隙间隔被设置。 通过平均设置的空闲时隙间隔在第二移动节点的一个时隙间隔中测量传输概率。 使用所测量的传输概率来获取第二移动节点的传输信息。 使用获取的传输信息来估计固定节点的可用吞吐量。