公开(公告)号：US08014263B2

公开(公告)日：2011-09-06

申请号：US12543671

申请日：2009-08-19

申请人： Zhifeng Tao ,  Philip V. Orlik ,  Jun Ma ,  Ye Li ,  Jinyun Zhang

发明人： Zhifeng Tao ,  Philip V. Orlik ,  Jun Ma ,  Ye Li ,  Jinyun Zhang

IPC分类号： H04J1/12 ,  H04B7/14

CPC分类号： H04B7/15592 ,  H04B7/15564 ,  H04L27/2601

摘要： Cross-talk is canceled in a cooperative wireless relay network that includes a base station (BS), a relay station (RS), and a mobile station (MS). A coupling channel between a transmit antenna and a receive antenna colocated at the RS is estimated. Cross-talk interference determination is based on a previous transmitted signal by the transmit antenna, and the coupling channel. The cross-talk interference is subtracted from a currently received signal by the receive antenna to obtain a residual signal. The residual signal is then transmitted as a next transmitted signal by the transmit antenna.

摘要翻译： 在包括基站（BS），中继站（RS）和移动站（MS）的协作无线中继网络中，串扰被取消。 估计发射天线与在RS共同定位的接收天线之间的耦合信道。 串扰干扰确定基于发射天线的先前发射信号和耦合信道。 由接收天线从当前接收到的信号中减去串扰干扰，以获得残留信号。 然后由发射天线作为下一个发射信号发送残余信号。

公开(公告)号：US07907508B2

公开(公告)日：2011-03-15

申请号：US12112400

申请日：2008-04-30

申请人： Zhifeng Tao ,  Yu-Jung Chang ,  Jinyun Zhang

发明人： Zhifeng Tao ,  Yu-Jung Chang ,  Jinyun Zhang

IPC分类号： H04J11/00 ,  H04J1/00 ,  H04W40/00 ,  H04W72/00 ,  H04K1/10 ,  H04K1/02 ,  H03D1/04

CPC分类号： H04L5/0032 ,  H04L5/0037 ,  H04L5/0058

摘要： A method allocates radio channel resource in an orthogonal frequency-division multiple access network including a set of base stations (BS) and a set of mobile stations (MS). For each BS, a diversity set is maintained for the sets of MS. Each BS determines possible interference at the MS based on the diversity set. A graph is constructed, in which nodes represent the sets of MS, and each edge between a pair of nodes represents channel interference between the MS represented by the pair of nodes. A weight is assigned to each edge, which reflects interference and signal strength on the subchannel between the two MSs connected by the edge. Channel resources are allocated to the MS based on the graph.

摘要翻译： 一种方法在包括一组基站（BS）和一组移动站（MS）的正交频分多址网络中分配无线电信道资源。 对于每个BS，为MS集合保持分集集合。 每个BS基于分集集确定MS处的可能干扰。 构建图，其中节点表示MS集合，并且一对节点之间的每个边缘表示由该对节点表示的MS之间的信道干扰。 权重分配给每个边缘，其反映由边缘连接的两个MS之间的子信道上的干扰和信号强度。 信道资源根据图表分配给MS。

公开(公告)号：US20100214997A1

公开(公告)日：2010-08-26

申请号：US12393820

申请日：2009-02-26

申请人： Zhifeng Tao ,  Weihuang Fu ,  Jinyun Zhang

发明人： Zhifeng Tao ,  Weihuang Fu ,  Jinyun Zhang

IPC分类号： H04W72/04 ,  H04W16/02

CPC分类号： H04W16/12 ,  H04W72/082 ,  H04W72/085

摘要： A method allocates resource in an Orthogonal Frequency-Division Multiple Access (OFDMA) network, including a set of Base Stations (BSs) and a set of Mobile Stations (MSs) for each BS. OFDMA frame are constructed as multiple resource blocks, and each resource block contains symbols transmitted on different subcarriers. A cluster is formed from adjacent sectors of different neighboring cells to jointly optimize the resource allocation in multiple frames, and three non-overlap zones are sequentially identified in cluster: cell center zone, cell edge zone, and cluster corner zone. Resource allocation includes intra-cluster proportional fair scheduling and inter-cluster interference mitigation. Intra-cluster scheduling further includes resource allocation for cell center zone and resource allocation for cell edge zone.

摘要翻译： 一种方法在正交频分多址（OFDMA）网络中分配资源，包括一组基站（BS）和一组用于每个BS的移动站（MS）。 OFDMA帧被构造为多个资源块，每个资源块包含在不同子载波上发送的符号。 从不同相邻小区的相邻扇区形成一个簇，共同优化多个帧中的资源分配，并在簇：小区中心区域，小区边缘区域和群集角区域中顺序识别出三个非重叠区域。 资源分配包括群内比例公平调度和集群间干扰减轻。 集群内调度还包括用于小区中心区的资源分配和小区边缘区域的资源分配。

公开(公告)号：US20090262852A1

公开(公告)日：2009-10-22

申请号：US12212609

申请日：2008-09-17

申请人： Philip V. Orlik ,  Wataru Matsumoto ,  Andreas F. Molisch ,  Zhifeng Tao ,  Jinyun Zhang

发明人： Philip V. Orlik ,  Wataru Matsumoto ,  Andreas F. Molisch ,  Zhifeng Tao ,  Jinyun Zhang

IPC分类号： H04B7/02

CPC分类号： H04L1/1816 ,  H04L1/0606 ,  H04L1/0631 ,  H04L1/0662 ,  H04L1/1819 ,  H04L1/1845

摘要： A method transmits a sequence of symbols in a multiple-input multiple-output (MIMO) network including a transmitter having a set of transmit antennas and a receiver having a set of receive antennas. The sequence of symbols is represented by a vector S=[S1 S2 S3 S4]T of individual symbols, where T is a transpose operator. The individual symbols are transmitted as a transmit matrix S = [ S 1 - S 2 * S 1 - S 2 * S 2 S 1 * S 2 S 1 * S 3 - S 4 * - S 3 S 4 * S 4 S 3 * - S 4 - S 3 * ] , where * is a complex conjugate, and wherein each column of the matrix S represents the symbols transmitted at each transmission interval, and subscripts index the set of transmit antennas.

摘要翻译： 一种方法在包括具有一组发射天线的发射机和具有一组接收天线的接收机的多输入多输出（MIMO）网络中发送符号序列。 符号序列由单个符号的矢量S = [S1 S2 S3 S4] T表示，其中T是转置运算符。 各个符号作为发送矩阵发送S = [S 1 -S 2 * S 1 -S 2 * S 2 S 1 * S 2 S 1 * S 3 -S 4 * -S 3 S 4 * S 4 S 3 * - S 4 -S 3 *]，其中*是复共轭，并且其中矩阵S的每列表示在每个传输间隔处发送的符号，下标索引发射天线集合。

公开(公告)号：US20090245085A1

公开(公告)日：2009-10-01

申请号：US12112346

申请日：2008-04-30

申请人： Zhifeng Tao ,  Yu-Jung Chang ,  Jinyun Zhang

发明人： Zhifeng Tao ,  Yu-Jung Chang ,  Jinyun Zhang

IPC分类号： H04J11/00

CPC分类号： H04L5/0032 ,  H04L5/0037 ,  H04L5/0058

摘要： A method allocates radio channel resources in an orthogonal frequency-division multiple access network including a set of base stations (BS) and a set of mobile stations (MS). For each BS, a diversity set is maintained for the sets of MS. Each BS determines possible interference at the MS based on the diversity set. A graph is constructed, in which nodes represent the sets of MS, mid each edge between a pair of nodes represents channel interference between the MS represented by the pair of nodes. A weight is assigned to each edge, which reflects interference between the two MSs connected by the edge. The interference graph is partitioned into non-overlapping clusters of nodes based on a structure of the interference graph, the potential interference, so that a sum of the weights of the edges between each cluster is maximized. Based upon the graph partitioning, the channel resources are allocated to the mobile stations in order to maximize the system capacity.

摘要翻译： 一种方法在包括一组基站（BS）和一组移动站（MS）的正交频分多址网络中分配无线电信道资源。 对于每个BS，为MS集合保持分集集合。 每个BS基于分集集确定MS处的可能干扰。 构建了一个图，其中节点表示MS集合，一对节点之间的每个边中间表示由该对节点表示的MS之间的信道干扰。 权重被分配给每个边缘，其反映由边缘连接的两个MS之间的干扰。 基于干扰图的结构，潜在的干扰，干扰图被划分成不重叠的节点簇，使得每个簇之间的边的权重之和最大化。 基于图分割，将信道资源分配给移动台，以便最大化系统容量。

公开(公告)号：US20090180459A1

公开(公告)日：2009-07-16

申请号：US12240164

申请日：2008-09-29

申请人： Philip V. Orlik ,  Andreas F. Molisch ,  Zhifeng Tao ,  Jinyun Zhang

发明人： Philip V. Orlik ,  Andreas F. Molisch ,  Zhifeng Tao ,  Jinyun Zhang

IPC分类号： H04B7/208 ,  H04L27/28

CPC分类号： H04L5/0094 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/0089

摘要： A method communicates symbols in a cell of a multiple-input multiple-output (MIMO) network that includes a set of mobile station and a base station. The symbols are communicated using orthogonal frequency division multiplexing (OFDM) and time division duplex (TDM). A frame for communicating the symbols between the base station and the mobile station is constructed. The frame is partitioned into a downlink subframe and an uplink subframe. The uplink subframe is partitioned into a first zone and a second zone, wherein the first zone uses orthogonal frequency division multiple access (OFDMA) and the second zone uses single carrier frequency division multiple access (SC-FDMA).

摘要翻译： 一种方法在包括一组移动台和基站的多输入多输出（MIMO）网络的小区中传送符号。 使用正交频分复用（OFDM）和时分双工（TDM）来传送符号。 构建用于在基站和移动站之间传送符号的帧。 帧被划分为下行链路子帧和上行链路子帧。 上行链路子帧被划分为第一区域和第二区域，其中第一区域使用正交频分多址（OFDMA），第二区域使用单载波频分多址（SC-FDMA）。

公开(公告)号：US20090111473A1

公开(公告)日：2009-04-30

申请号：US11931378

申请日：2007-10-31

申请人： Zhifeng Tao ,  Tairan Wang ,  Jinyun Zhang

发明人： Zhifeng Tao ,  Tairan Wang ,  Jinyun Zhang

IPC分类号： H04Q7/20

CPC分类号： H04W36/18

摘要： A method and system communicates cooperatively between base stations and mobile stations in a wireless cellular network. At least two mobile stations are detected in a handover region. A diversity set is established for each mobile station in the handover region. Each diversity set identifies at least two base stations that can communicate with the associated mobile station. The at least two base stations and the at least two mobile stations are combined into members of a cooperation set. A resource is allocated to selected members of the cooperative set. The selected members are notified of the allocated resource. Then, the selected base stations of the cooperation set communicate concurrently with the selected mobile stations using the same allocated resource.

摘要翻译： 方法和系统在无线蜂窝网络中的基站和移动台之间协作通信。 在切换区域中至少检测到两个移动站。 为切换区域中的每个移动站建立分集集合。 每个分集集识别可以与相关联的移动台进行通信的至少两个基站。 所述至少两个基站和所述至少两个移动台组合成合作集的成员。 资源被分配给合作集合的选定成员。 所选成员被通知所分配的资源。 然后，使用相同的分配资源，所选择的协作集的基站与所选择的移动台同时进行通信。

公开(公告)号：US20080165670A1

公开(公告)日：2008-07-10

申请号：US11620123

申请日：2007-01-05

申请人： Zhifeng Tao ,  Toshiyuki Kuze ,  Shigeru Uchida ,  Kentarou Sawa ,  Koon Hoo Teo ,  Jinyun Zhang

发明人： Zhifeng Tao ,  Toshiyuki Kuze ,  Shigeru Uchida ,  Kentarou Sawa ,  Koon Hoo Teo ,  Jinyun Zhang

IPC分类号： H04J11/00

CPC分类号： H04L5/0053 ,  H04L1/1812 ,  H04L1/1822 ,  H04L5/0007 ,  H04L5/0091 ,  H04L47/10 ,  H04L47/14 ,  H04L47/34

摘要： A method and system enables and improves performance of hybrid automatic repeat request (HARQ) operations on channels between stations of an orthogonal frequency division multiple access (OFDMA) wireless communication network. There, the number of parallel HARQ channels is increased adaptively, and one connection identifier is used to unambiguously identify a set of MAC protocol data units (MPDUs) communicated over parallel HARQ channels. A sequence number is used to avoid out-of-order MPDU delivery when MPDUs are transmitted over parallel HARQ channels. The MPDUs can be concatenated or encapsulated. The maximum number of the parallel HARQ channels can be increased to 256, and can be negotiated when a station enters or re-enters the network.

摘要翻译： 一种方法和系统能够在正交频分多址（OFDMA）无线通信网络的站之间的信道上实现并提高混合自动重传请求（HARQ）操作的性能。 在此，自适应地增加并行HARQ信道的数量，并且使用一个连接标识符来明确地标识通过并行HARQ信道传送的一组MAC协议数据单元（MPDU）。 当MPDU通过并行HARQ信道发送时，序列号用于避免无序MPDU传送。 MPDU可以级联或封装。 并行HARQ信道的最大数量可以增加到256，并且当站进入或重新进入网络时可以协商。

公开(公告)号：US20080107061A1

公开(公告)日：2008-05-08

申请号：US11593358

申请日：2006-11-06

申请人： Zhifeng Tao ,  Koon Hoo Teo ,  Toshiyuki Kuze ,  Jinyun Zhang

发明人： Zhifeng Tao ,  Koon Hoo Teo ,  Toshiyuki Kuze ,  Jinyun Zhang

IPC分类号： H04J3/08

CPC分类号： H04L47/10 ,  H04B7/2606 ,  H04L47/12 ,  H04L47/14 ,  H04W16/26 ,  H04W28/06 ,  H04W84/047

摘要： A method communicates packets in a relay network. Multiple packets are communicated between a set of mobile stations and a relay station using a set of connections. There is one connection between each mobile station and the relay station. The multiple packets are aggregated on single connection between the relay station and a base station.

摘要翻译： 一种方法在中继网络中传送数据包。 使用一组连接在一组移动站和中继站之间传送多个分组。 每个移动台和中继站之间有一个连接。 多个分组在中继站和基站之间的单个连接上聚合。

公开(公告)号：US20060034219A1

公开(公告)日：2006-02-16

申请号：US10915801

申请日：2004-08-11

申请人： Daqing Gu ,  Zhifeng Tao ,  Jinyun Zhang

发明人： Daqing Gu ,  Zhifeng Tao ,  Jinyun Zhang

IPC分类号： H04L12/413

CPC分类号： H04L47/824 ,  H04L47/14 ,  H04L47/15 ,  H04L47/70 ,  H04L47/72 ,  H04L47/765 ,  H04L47/788 ,  H04W28/20 ,  H04W74/04 ,  H04W74/0808 ,  H04W74/0866

摘要： A method signals data in a channel of a network including multiple stations and an access point connected by a wireless channel. A station first requests access to the channel using a sequential coordinated channel access method of an access point. After the station receives permission to access the channel during a contention free period at a time corresponding to a sequence index value received by the station from the access point, the station transmits a resource request message to the access point to obtain a bandwidth allocation. In response, the station receives the bandwidth allocation, and the station can then transmit data during the contention free period according to the bandwidth allocation.

摘要翻译： 一种方法是在包括多个站的网络的信道中的信号和由无线信道连接的接入点的信号。 首先，使用接入点的顺序协调信道接入方法请求接入信道。 在与站点从接入点接收到的序列索引值相对应的时间段内，在无竞争阶段期间接收到访问信道的许可之后，站向接入点发送资源请求消息以获得带宽分配。 作为响应，站接收带宽分配，然后站可以根据带宽分配在无竞争期间发送数据。