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    Cooperative relay communication in wireless OFDMA star networks
    1.
    发明授权
    Cooperative relay communication in wireless OFDMA star networks 有权
    无线OFDMA星形网络中的协作中继通信

    公开(公告)号：US08553660B2

    公开(公告)日：2013-10-08

    申请号：US12651472

    申请日：2010-01-03

    申请人： Raymond Yim ,  Hang Su ,  Zafer Sahinoglu

    发明人： Raymond Yim ,  Hang Su ,  Zafer Sahinoglu

    IPC分类号： H04W4/00 ,  H04K1/10

    CPC分类号： H04W72/121 ,  H04B7/15557 ,  H04B7/2606 ,  H04W84/047 ,  H04W84/18

    摘要： A wireless star network includes including a master node (master) and a set of N slave nodes (slaves), wherein the network uses orthogonal frequency division multiple access (OFDMA). The master partitions the set of slaves in a first subset A(i) and second subset B(j), wherein the first and second subsets are disjoint. Packets are transmitted by the first subset of slaves only while the master and second subset of slaves operate in receive mode, andpackets are transmitted by the second subset of slaves only while the master and first of slaves operate in receive mode.

    摘要翻译： 无线星形网络包括主节点（主节点）和一组N个从节点（从属节点），其中网络使用正交频分多址（OFDMA）。 主分区在第一子集A（i）和第二子集B（j）中的从属组，其中第一和第二子集是不相交的。 分组仅由从机的第一子集发送，而从机的主机和第二子集在接收模式下操作，并且分组由从机的第二子集仅在主机和第一从机以接收模式操作时发送。

    Cooperative Relay Communication in Wireless OFDMA Star Networks
    2.
    发明申请
    Cooperative Relay Communication in Wireless OFDMA Star Networks 有权
    无线OFDMA星形网络中的协作中继通信

    公开(公告)号：US20110164555A1

    公开(公告)日：2011-07-07

    申请号：US12651472

    申请日：2010-01-03

    申请人： Raymond Yim ,  Hang Su ,  Zafer Sahinoglu

    发明人： Raymond Yim ,  Hang Su ,  Zafer Sahinoglu

    IPC分类号： H04W40/00 ,  H04L27/28

    CPC分类号： H04W72/121 ,  H04B7/15557 ,  H04B7/2606 ,  H04W84/047 ,  H04W84/18

    摘要： A wireless star network includes including a master node (master) and a set of N slave nodes (slaves), wherein the network uses orthogonal frequency division multiple access (OFDMA). The master partitions the set of slaves in a first subset A(i) and second subset B(j), wherein the first and second subsets are disjoint. Packets are transmitted by the first subset of slaves only while the master and second subset of slaves operate in receive mode, andpackets are transmitted by the second subset of slaves only while the master and first of slaves operate in receive mode.

    摘要翻译： 无线星形网络包括主节点（主节点）和一组N个从节点（从属节点），其中网络使用正交频分多址（OFDMA）。 主分区在第一子集A（i）和第二子集B（j）中的从属组，其中第一和第二子集是不相交的。 分组仅由从机的第一子集发送，而从机的主机和第二子集在接收模式下操作，并且分组由从机的第二子集仅在主机和第一从机以接收模式操作时发送。

    Method and network for transmitting data in a wireless network with fixed transmission intervals
    3.
    发明授权
    Method and network for transmitting data in a wireless network with fixed transmission intervals 有权
    用于以固定的传输间隔在无线网络中传输数据的方法和网络

    公开(公告)号：US08228883B2

    公开(公告)日：2012-07-24

    申请号：US12651517

    申请日：2010-01-04

    申请人： Raymond Yim ,  Zhifeng Tao ,  Zafer Sahinoglu ,  Man-On Pun

    发明人： Raymond Yim ,  Zhifeng Tao ,  Zafer Sahinoglu ,  Man-On Pun

    IPC分类号： H04W4/00 ,  H04W72/00

    CPC分类号： H04W72/121 ,  H04B7/15592 ,  H04B7/2606 ,  H04W84/047 ,  H04W84/18

    摘要： A wireless network master node periodically broadcasts beacons that specify a structure of a following fixed length superframe. Slave nodes determine a channel condition between each slave and the master. Then, the set of slaves is partitioned into subsets of slaves according to the channel conditions. The master assigns, to each slave, a transmission rate in a low to high order according to the channel conditions, and the slaves transmit data to the master in the low to high order between two consecutive beacons, wherein the subsets of slaves with a higher transmission rate also receive the data from the subsets of slaves with a lower transmission rate, and wherein a slave with a higher transmission rate includes a part of or all the data from a slave with a lower transmission rate.

    摘要翻译： 无线网络主节点周期性地广播指定以下固定长度超帧的结构的信标。 从节点确定每个从站和主站之间的通道状态。 然后，根据信道条件将从属单元划分成从属子集。 主设备根据信道条件将从低到高的传输速率分配给每个从站，并且从站在两个连续的信标之间以低到高顺序向主设备发送数据，其中具有较高的从站的子集 传输速率还从具有较低传输速率的从属子集接收数据，并且其中具有较高传输速率的从机包括来自具有较低传输速率的从机的部分或全部数据。

    Carrier allocation and time sharing for OFDMA/TDMA networks
    5.
    发明授权
    Carrier allocation and time sharing for OFDMA/TDMA networks 有权
    OFDMA / TDMA网络的载波分配和时间共享

    公开(公告)号：US08472304B2

    公开(公告)日：2013-06-25

    申请号：US12503169

    申请日：2009-07-15

    申请人： Philip V. Orlik ,  Qinghe Du ,  Zafer Sahinoglu ,  Chunjie Duan ,  Jinyun Zhang

    发明人： Philip V. Orlik ,  Qinghe Du ,  Zafer Sahinoglu ,  Chunjie Duan ,  Jinyun Zhang

    IPC分类号： H04J11/00

    CPC分类号： H04L5/0007 ,  H04L5/003 ,  H04L5/0048

    摘要： A method allocates bandwidth to channels in an orthogonal frequency division multiple access and time division multiple access (TDMA) network. The network includes a master device (master) communicating with a set of slave devices (slaves). The master defines a set Ψm of logical indices ν of a set of N physical subcarriers for a set of M data streams to be allocated to a set of Nd logical data subcarriers according to Ψm={ν|ν=iM+m, i=0,1,2, . . . , d−1}, where d=Nd/M. The set of N data subcarriers is mapped to the set of Nd logical subcarriers according to the logical indices, and the data subcarriers are allocated to the logical subcarriers.

    摘要翻译： 一种方法为正交频分多址和时分多址（TDMA）网络中的信道分配带宽。 网络包括与一组从设备（从站）通信的主设备（主设备）。 主器件根据Psim = {nu | nu = iM + m，i = 1，...，n）定义要分配给一组Nd逻辑数据子载波的一组M个数据流的N个物理子载波的逻辑索引nu的集合Psim， 0,1,2，。 。 。 ，d-1}，其中d = Nd / M。 N组数据子载波根据逻辑索引映射到一组Nd逻辑子载波，并将数据副载波分配给逻辑子载波。

    SNR-based blanking scheme for impulsive noise mitigation in wireless networks
    6.
    发明授权
    SNR-based blanking scheme for impulsive noise mitigation in wireless networks 失效
    用于无线网络中脉冲噪声抑制的基于SNR的消隐方案

    公开(公告)号：US08451956B2

    公开(公告)日：2013-05-28

    申请号：US12650410

    申请日：2009-12-30

    申请人： Man-On Pun ,  Chunjie Duan ,  Zafer Sahinoglu ,  Dirk Brinkman

    发明人： Man-On Pun ,  Chunjie Duan ,  Zafer Sahinoglu ,  Dirk Brinkman

    IPC分类号： H04B1/10

    CPC分类号： H04L25/067 ,  H04L1/0045 ,  H04L27/2647

    摘要： A blanking scheme for mitigating impulsive noise in wireless networks is based on the signal-to-noise ratio (SNR) of symbols. To fully gain the benefits of the SNR-based blanking scheme, two methods are developed, namely a multi-level thresholding scheme in the time-, spatial- and frequency-domains, and a weighted-input error-correction decoding. The symbols are conditioned as a function of the estimated SNR in time-, frequency-, or spatial-domains or combinations therefore, and the conditioning is applied to an amplitude, phase, or energy level, or combinations thereof.

    摘要翻译： 用于减轻无线网络中的脉冲噪声的消隐方案是基于符号的信噪比（SNR）。 为了充分获得基于SNR的消隐方案的优点，开发了两种方法，即时域，空间和频域中的多级阈值方案和加权输入纠错解码。 符号在时间，频率或空间域或组合中作为估计的SNR的函数进行调节，并且将调节应用于幅度，相位或能级或其组合。

    OFDMA based medium access control and frame structure design for industrial applications
    7.
    发明授权
    OFDMA based medium access control and frame structure design for industrial applications 有权
    基于OFDMA的媒体访问控制和工业应用的框架结构设计

    公开(公告)号：US08218661B2

    公开(公告)日：2012-07-10

    申请号：US12347087

    申请日：2008-12-31

    申请人： Ghulam Bhatti ,  Zafer Sahinoglu ,  Yi Huang ,  Jinyun Zhang

    发明人： Ghulam Bhatti ,  Zafer Sahinoglu ,  Yi Huang ,  Jinyun Zhang

    IPC分类号： H04L27/28

    CPC分类号： H04L1/1685 ,  H04L1/1614 ,  H04L1/1621 ,  H04L1/1887 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0053 ,  H04L27/2601 ,  H04L2001/0093 ,  H04W48/08 ,  H04W74/0808 ,  H04W88/06

    摘要： A network includes a master and a set of slaves that communicate orthogonal frequency-division multiplexing (OFDM) and time division multiple access (TDMA) symbols on sub-carriers. A master broadcasts to the set of slaves using downlinks and all of the sub-carriers, a broadcast polling packet including data packets for each slave and sub-carrier assignments for the slaves. Each slave, in response to receiving the downlink polling packet, transmits simultaneously a response packet to the master using uplinks and the assigned sub-carriers. The master then transmits to the set of slave using the downlinks and all of the sub-carriers, a group acknowledgement packet, wherein the broadcast polling packet, the response packet, and the group acknowledgement packet comprise one superframe in one communication cycle, and wherein the broadcasting on the downlinks and the transmitting on the uplinks are disjoint in time.

    摘要翻译： 网络包括在子载波上传送正交频分复用（OFDM）和时分多址（TDMA）符号的主机和一组从机。 主机使用下行链路和所有子载波来广播到一组从站，包括用于每个从站的数据分组的广播轮询分组以及从站的副载波分配。 响应于接收到下行链路轮询分组，每个从机使用上行链路和所分配的子载波同时向主机发送响应分组。 然后，主机然后使用下行链路和所有子载波（其中广播轮询分组，响应分组和组确认分组在一个通信周期中包括一个超帧）发送到所述一组从机，并且其中 在下行链路上的广播和在上行链路上的发送是不相交的。

    Method for suppressing clutter in space-time adaptive processing systems
    8.
    发明授权
    Method for suppressing clutter in space-time adaptive processing systems 有权
    用于抑制时空自适应处理系统中杂波的方法

    公开(公告)号：US08179300B2

    公开(公告)日：2012-05-15

    申请号：US12696997

    申请日：2010-01-29

    申请人： Man-On Pun ,  Zafer Sahinoglu

    发明人： Man-On Pun ,  Zafer Sahinoglu

    IPC分类号： G01S13/00

    CPC分类号： G01S13/00

    摘要： A method surpresses clutter in a space-time adaptive processing system. The method achieves low-complexity computation via two steps. First, the method utilizes an improved fast approximated power iteration method to compress the data into a much smaller subspace. To further reduce the computational complexity, a progressive singular value decomposition (SVD) approach is employed to update the inverse of the covariance matrix of the compressed data. As a result, the proposed low-complexity STAP procedure can achieve near-optimal performance with order-of-magnitude computational complexity reduction as compared to the conventional STAP procedure.

    摘要翻译： 一种方法在时空自适应处理系统中抑制杂乱。 该方法通过两个步骤实现低复杂度计算。 首先，该方法利用改进的快速近似幂迭代方法将数据压缩成更小的子空间。 为了进一步降低计算复杂度，采用渐进奇异值分解（SVD）方法来更新压缩数据的协方差矩阵的逆。 结果，与传统的STAP过程相比，所提出的低复杂度STAP过程可以实现具有数量级的计算复杂度降低的接近最佳性能。

    Distributed beacon enabled wireless networks
    10.
    发明授权
    Distributed beacon enabled wireless networks 有权
    分布式信标启用无线网络

    公开(公告)号：US07936709B2

    公开(公告)日：2011-05-03

    申请号：US12362217

    申请日：2009-01-29

    申请人： Ghulam Bhatti ,  Zafer Sahinoglu

    发明人： Ghulam Bhatti ,  Zafer Sahinoglu

    IPC分类号： H04J3/08 ,  H04B7/212

    CPC分类号： H04W28/06 ,  H04W48/08 ,  H04W72/04 ,  H04W84/18

    摘要： In a wireless network that includes multiple nodes, each periodic announcement cycle of a communication schedule is partitioned into a set of time slots, including a set of management time slots, a set of beacon time slots, and a set of superframe time slots. Management frames are broadcast during the management slot to specify beacons. Beacons are transmitted during the beacon slots to specify when to transmit the superframes during the superframe time slots.

    摘要翻译： 在包括多个节点的无线网络中，将通信调度的每个周期性通知周期划分成一组时隙，包括一组管理时隙，一组信标时隙和一组超帧时隙。 管理帧在管理槽中广播，以指定信标。 在信标时隙期间发送信标，以指定何时在超帧时隙期间发送超帧。