公开(公告)号：US07673219B2

公开(公告)日：2010-03-02

申请号：US11377711

申请日：2006-03-16

Applicant: Andreas F. Molisch ,  Neelesh B. Mehta ,  Jonathan S. Yedidia ,  Jinyun Zhang

Inventor： Andreas F. Molisch ,  Neelesh B. Mehta ,  Jonathan S. Yedidia ,  Jinyun Zhang

IPC: G11C29/00

CPC classification number: H04B7/026 ,  H04B7/15592 ,  H04L1/06 ,  H04L1/0618 ,  H04L2001/0097 ,  H04W52/46

Abstract: A system and method for communicating information in a wireless cooperative relay network of nodes, the nodes including a source, a set of relays, and a destination. The source broadcasts a code word encoded as a data stream using a rateless code. The relays receive the data stream, decode the data stream to recover the code word, and reencode and transmit the recovered code word as the data stream with the rateless code. The destination receives and decodes the reencoded data streams to recover the code word.

Abstract translation: 一种用于在节点的无线协作中继网络中传送信息的系统和方法，所述节点包括源，一组中继和目的地。 源使用无码代码广播编码为数据流的码字。 继电器接收数据流，解码数据流以恢复代码字，并重新编码并发送恢复的代码字作为数据流与无码代码。 目的地接收并解码重新编码的数据流以恢复码字。

公开(公告)号：US20100002657A1

公开(公告)日：2010-01-07

申请号：US12495147

申请日：2009-06-30

Applicant: Koon Hoo Teo ,  Neelesh B. Mehta ,  Jinyun Zhang

Inventor： Koon Hoo Teo ,  Neelesh B. Mehta ,  Jinyun Zhang

IPC: H04W72/04 ,  H04J3/00

CPC classification number: H04B7/061 ,  H04B7/0691 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0228

Abstract: Embodiments of the invention describe a method for joint resource blocks assignment and antenna selection (AS) in a wireless communication network, the network comprising user equipment (UE), wherein the UE comprises a plurality of subsets of antennas, the UE is configured to transmit a sounding reference signal (SRS) from a subset of antennas at a time. The method transmits a first SRS from a first subset of antennas and a second SRS from a second subset of antennas. Upon receiving, in response to the transmitting of the first SRS and the second SRS, information related to an optimal subset of antennas, and information related to an optimal subset of resource blocks, the method transmits a data symbol from the optimal subset of antennas using the optimal resource block.

Abstract translation: 本发明的实施例描述了一种在无线通信网络中联合资源块分配和天线选择（AS）的方法，所述网络包括用户设备（UE），其中，所述UE包括多个天线子集，所述UE被配置为传送 一次来自天线子集的探测参考信号（SRS）。 该方法从天线的第一子集和第二子天线发送第一SRS。 在接收到响应于第一SRS和第二SRS的发送，与天线的最佳子集相关的信息以及与资源块的最佳子集相关的信息时，该方法使用最佳的天线子集来发送数据符号 最优资源块。

公开(公告)号：US20090296684A1

公开(公告)日：2009-12-03

申请号：US12453685

申请日：2009-05-19

Applicant: Zhenzhen Ye ,  Chunjie Duan ,  Philip Orlik ,  Jinyun Zhang

Inventor： Zhenzhen Ye ,  Chunjie Duan ,  Philip Orlik ,  Jinyun Zhang

IPC: H04J3/06 ,  H04K1/10

CPC classification number: H04J3/0608

Abstract: Synchronization methods and systems for communications over a multi-band system are presented. A synchronization technique for communications over a multi-band system includes receiving a packet of preamble symbols respectively transmitted over a sequence of frequency sub-bands according to one of a plurality of frequency hopping patterns, wherein the plurality of frequency hopping patterns are partitioned into a plurality of disjoint groups, each group having a different associated periodicity; computing, in parallel, respective autocorrelation values of the packet received in a selected frequency sub-band at a plurality of symbol delays; and selecting one of the plurality of groups of frequency hopping patterns based on the autocorrelation values at the plurality of symbol delays.

Abstract translation: 介绍了多频段系统通信的同步方法和系统。 用于通过多频带系统进行通信的同步技术包括：接收根据多个跳频模式之一分别在一系列频率子带上传送的前导符号分组，其中多个跳频模式被划分为 多个不相交组，每组具有不同的相关周期; 并行地计算在多个符号延迟时在所选择的频率子带中接收的分组的相应自相关值; 以及基于所述多个符号延迟的所述自相关值来选择所述多个组跳频模式中的一个。

公开(公告)号：US20090245086A1

公开(公告)日：2009-10-01

申请号：US12112400

申请日：2008-04-30

Applicant: Zhifeng Tao ,  Yu-Jung Chang ,  Jinyun Zhang

Inventor： Zhifeng Tao ,  Yu-Jung Chang ,  Jinyun Zhang

IPC: H04J11/00

CPC classification number: H04L5/0032 ,  H04L5/0037 ,  H04L5/0058

Abstract: 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.

Abstract translation: 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：US20090220085A1

公开(公告)日：2009-09-03

申请号：US12204093

申请日：2008-09-04

Applicant: Zhifeng Tao ,  Jinyun Zhang

Inventor： Zhifeng Tao ,  Jinyun Zhang

IPC: H04L9/00 ,  H04K1/00

CPC classification number: H04L63/0428 ,  H04L1/0075 ,  H04L63/0272 ,  H04W12/001 ,  H04W84/12

Abstract: Provided is a data structure for transmitting a relay media access control (MAC) protocol data unit (PDU) between stations in a multi-hop relay network. The MAC PDU includes an encryption control bit, an allocation subheader bit, a grant management subheader bit, a fragmentation subheader bit, a packing subheader bit, a quality of service subheader bit, and an encryption key sequence. The relay MAC PDU is transmitted in a tunnel established between base station and relay station.

Abstract translation: 提供了一种用于在多跳中继网络中的站之间发送中继媒体接入控制（MAC）协议数据单元（PDU）的数据结构。 MAC PDU包括加密控制位，分配子头位，授权管理子头位，分段子头位，打包子头位，服务质量分头位和加密密钥序列。 中继MAC PDU在基站和中继站之间建立的隧道中进行传输。

公开(公告)号：US20090129501A1

公开(公告)日：2009-05-21

申请号：US11990650

申请日：2005-08-19

Applicant: Neelesh B. Mehta ,  Yabo Li ,  Andreas F. Molisch ,  Jinyun Zhang

Inventor： Neelesh B. Mehta ,  Yabo Li ,  Andreas F. Molisch ,  Jinyun Zhang

IPC: H04L27/00

CPC classification number: H04B7/061

Abstract: A method is provided for receiving data at a receiver via a communication channel from a transmitter having at least two transmitter antennas, the method including: receiving (S204) a codebook including an assignment of at least two respective codewords to the at least two transmitter antennas, the assignment being based at least in part on a characteristic of the communication channel; detecting a state of the communication channel by which the receiver can communicate with the transmitter; selecting (S206) at least one desired transmitter antenna from the at least two antennas based at least in part on the detected state of the communication channel; transmitting (S208) to the transmitter a codeword corresponding to the at least one desired transmitter antenna; and receiving (S210) data at the receiver transmitted by the transmitter.

Abstract translation: 提供了一种用于经由来自具有至少两个发射机天线的发射机的通信信道在接收机处接收数据的方法，所述方法包括：接收（S204）包括至少两个相应码字的分配的码本到所述至少两个发射机天线 所述分配至少部分地基于所述通信信道的特性; 检测接收机可以与发射机通信的通信信道的状态; 至少部分地基于所检测到的通信信道的状态，从所述至少两个天线中选择（S206）至少一个期望的发射机天线; 向所述发射机发送对应于所述至少一个所需发射机天线的码字（S208）; 以及在由发射机发送的接收机处接收（S210）数据。

公开(公告)号：US20090074088A1

公开(公告)日：2009-03-19

申请号：US11854790

申请日：2007-09-13

Applicant: Zhifeng Tao ,  Anfei Li ,  Koon Hoo Teo ,  Jinyun Zhang

Inventor： Zhifeng Tao ,  Anfei Li ,  Koon Hoo Teo ,  Jinyun Zhang

IPC: H04J11/00 ,  H03M13/03 ,  H04L27/28

CPC classification number: H04L1/1812 ,  H04L1/0007 ,  H04L27/2601

Abstract: A method performs a hybrid automatic repeat-request (HARQ) operation in a wireless orthogonal frequency division multiple access (OFDMA) network. A quality of a channel between a transmitter and a receiver is estimated as an error metric. A packet for the HARQ operation is fragmented adaptively at the transmitter according to the estimated error metric. The fragmentation is performed at the HARQ layer when the error metric is less than a predetermined threshold, otherwise the fragmentation is performed at the MAC layer.

Abstract translation: 一种方法在无线正交频分多址（OFDMA）网络中执行混合自动重传请求（HARQ）操作。 发射机和接收机之间的信道的质量被估计为误差度量。 用于HARQ操作的分组根据估计的误差度量在发射机处被自适应地分段。 当错误度量小于预定阈值时，在HARQ层执行分段，否则在MAC层执行分段。

公开(公告)号：US20090016372A1

公开(公告)日：2009-01-15

申请号：US12117219

申请日：2008-05-08

Applicant: Zhifeng Tao ,  Andreas F. Molisch ,  Philip V. Orlik ,  Jinyun Zhang ,  Shigeru Uchida ,  Kentarou Sawa

Inventor： Zhifeng Tao ,  Andreas F. Molisch ,  Philip V. Orlik ,  Jinyun Zhang ,  Shigeru Uchida ,  Kentarou Sawa

IPC: H04J3/16

CPC classification number: H04B7/0874 ,  H04B7/063 ,  H04B7/0691 ,  H04L5/0007

Abstract: A method selects antennas in an OFDMA wireless network including a base station and a mobile station. The mobile station measures a channel state of a downlink in a downlink subframe using different subsets of available antennas, and selects a subset of receive antennas for downlink reception based on the channel states between the base station and the different subsets of antennas at the mobile station. The base station measures the channel state in an uplink using an uplink subframe received in the base station from the mobile station, and selects a subset of transmit antennas for mobile station's uplink transmission based on the channel states between the base station and different subset of antennas at the mobile station.

Abstract translation: 一种方法选择包括基站和移动台的OFDMA无线网络中的天线。 移动站使用不同的可用天线子集来测量下行链路子帧中的下行链路的信道状态，并且基于移动站的基站和不同的天线子集之间的信道状态来选择用于下行链路接收的接收天线的子集 。 基站使用来自移动站的基站中接收到的上行链路子帧来测量上行链路中的信道状态，并且基于基站和不同的天线子集之间的信道状态来选择用于移动台的上行链路传输的发射天线的子集 在移动台。

公开(公告)号：US07443925B2

公开(公告)日：2008-10-28

申请号：US10895167

申请日：2004-07-20

Applicant: Neelesh B. Mehta ,  Fadel F. Digham ,  Andreas F. Molisch ,  Jinyun Zhang

Inventor： Neelesh B. Mehta ,  Fadel F. Digham ,  Andreas F. Molisch ,  Jinyun Zhang

IPC: H04L27/04

CPC classification number: H04B7/0417 ,  H04B7/0443 ,  H04B7/0615 ,  H04B7/0626 ,  H04L1/0687 ,  H04W52/42

Abstract: A method generates signals in a transmitter of a multiple-input, multiple-output wireless communications system. The transmitter includes Nt transmit antennas. A transmit covariance matrix Rt determined using statistical state information of a channel. The transmit covariance Rt matrix is decomposed using transmit eigenvalues Λt to obtain a transmit eigenspace Ut according to Rt=UtΛtU†t, where † is a Hermitian transpose. A pilot eigenspace Up is set equal to the transmit eigenspace Ut. A NtxTp block of pilot symbols Xp is generated from the pilot eigenspace Up and pilot eigenvalue Λp according to Xp=UpΛp1/2. A data eigenspace Ud is set equal to the transmit eigenspace Ut. In addition, a Nt×Nt data covariance matrix Qd is generated according to UdΛdU†d, where Λd are data eigenvalues. A NtxTd block of data symbols is generated, such that an average covariance of each of the columns in the block of data symbols Xd equals the data covariance matrix Qd. The block of pilot and data symbols form the signals to be transmitted.

Abstract translation: 一种方法在多输入多输出无线通信系统的发射机中产生信号。 发射机包括N T个发射天线。 使用信道的统计状态信息确定发送协方差矩阵R t t。 使用发射特征值λλt来分解发射协方差矩阵，以获得根据R t的t 1的发送本征空间U T t， 其中†是Hermitian转置。其中†是Hermitian转置。 飞行员本征空间U P p被设置为等于发射本征空间U T t。 从导频符号空间U P1和导频特征值Lambda生成导频符号X P p P块的导频符号X P＆lt; P＆lt;＆lt; 根据X＆lt; p＆lt; p＆lt; p＆lt; p＆lt; p＆lt; p＆gt;＆lt; 1/2＆gt; 数据本征空间U D D被设置为等于发送本征空间U T t。 另外，根据U SUB ambda is is is is is is is is is is is is is is is is is SUB is according according according according according according according according according according according according according according according according according according according according according according according according according 其中λλd是数据特征值。 生成数据符号块，使得数据符号块X中的每个列的平均协方差为 等于数据协方差矩阵Q 。 导频块和数据符号块形成要传输的信号。

公开(公告)号：US20080212513A1

公开(公告)日：2008-09-04

申请号：US11770327

申请日：2007-06-28

Applicant: Zhifeng Tao ,  Jinyun Zhang

Inventor： Zhifeng Tao ,  Jinyun Zhang

IPC: H04J3/08

CPC classification number: H04L69/324 ,  H04L69/22 ,  H04W88/04

Abstract: The invention provides a data structure embodied in a computer readable media. The data structure is a protocol data packet (PDU) communicated in a mobile multihop network between stations. The data structure includes a relay media access header, a payload and an optional cyclical redundancy checksum for the protocol data unit; and an indication whether the PDU is a relay media access protocol data unit or not.

Abstract translation: 本发明提供一种体现在计算机可读介质中的数据结构。 数据结构是在站之间的移动多跳网络中通信的协议数据分组（PDU）。 数据结构包括用于协议数据单元的中继媒体接入报头，有效载荷和可选的循环冗余校验和; 以及PDU是否为中继媒体接入协议数据单元的指示。