公开(公告)号：US07697623B2

公开(公告)日：2010-04-13

申请号：US11620089

申请日：2007-01-05

申请人： Neelesh B. Mehta ,  Erdem Bala ,  Jinyun Zhang

发明人： Neelesh B. Mehta ,  Erdem Bala ,  Jinyun Zhang

IPC分类号： H04L27/28 ,  H04B17/00

CPC分类号： H04B7/0691 ,  H04B7/061

摘要： A method and system switches antennas in an orthogonal frequency division multiplexed access (OFDMA) wireless communication system while transmitting symbols. Each symbol includes a cyclic prefix and a block of data signals. The symbols are transmitted during a first portion of a transmission time interval (TTI), from a first antenna. Then, the RF chain is switched to a second antenna to transmit the symbols, and in which the switching is performed substantially between transmitting two consecutive transmitted symbols.

摘要翻译： 方法和系统在发送符号的同时在正交频分复用接入（OFDMA）无线通信系统中切换天线。 每个符号包括循环前缀和数据信号块。 在传输时间间隔（TTI）的第一部分期间，从第一天线发送符号。 然后，将RF链切换到第二天线以发送符号，并且其中基本上在发送两个连续发送的符号之间执行切换。

公开(公告)号：US20080075007A1

公开(公告)日：2008-03-27

申请号：US11527267

申请日：2006-09-25

申请人： Neelesh B. Mehta ,  Ritesh Madan ,  Andreas F. Molisch ,  Jinyun Zhang

发明人： Neelesh B. Mehta ,  Ritesh Madan ,  Andreas F. Molisch ,  Jinyun Zhang

IPC分类号： H04J3/14 ,  H04L12/28

CPC分类号： H04W40/22 ,  H04B7/15592 ,  H04L45/12 ,  H04L45/24 ,  H04W40/08 ,  Y02D70/122 ,  Y02D70/324 ,  Y02D70/39 ,  Y02D70/446

摘要： A method selects an optimal route in a cooperative relay network including a set of nodes. For each node in a set of nodes of a cooperative relay network, dynamically varying channel state information is determined. A transmission policy based on the dynamically-varying channel state information is selected, in which the transmission policy includes selected nodes forming an optimal route, a transmission mode for each selected node, and a transmission power for each selected node.

摘要翻译： 一种方法在包括一组节点的协作中继网络中选择最优路由。 对于协作中继网络的一组节点中的每个节点，确定动态变化的信道状态信息。 选择基于动态变化的信道状态信息的传输策略，其中传输策略包括形成最佳路由的选定节点，每个选定节点的传输模式以及每个选择节点的传输功率。

公开(公告)号：US20080051149A1

公开(公告)日：2008-02-28

申请号：US11620105

申请日：2007-01-05

申请人： Neelesh B. Mehta ,  Erdem Bala ,  Jinyun Zhang ,  Andreas F. Molisch

发明人： Neelesh B. Mehta ,  Erdem Bala ,  Jinyun Zhang ,  Andreas F. Molisch

IPC分类号： H04B1/02 ,  H04M1/00 ,  H04B7/02

CPC分类号： H04B7/061 ,  H04L1/0026 ,  H04L1/06 ,  H04L5/023 ,  H04L25/0224 ,  H04L27/261

摘要： A method and system selects a subset of antennas from a set of antennas to transmit user data in a wireless communication system. The user data is transmitted during a first transmission time intervals (TTI) using a first subset of antennas. Pilot tones are transmitted during a second TTI using a second subset of antennas. Corresponding channel qualities are estimated for the first subset of antennas and the second subset of antennas from the user data and the pilot tones. Then, based on the estimating, a best subset of antenna is selected from the first subset of antennas and the second subset of antennas to transmit the user data during a subsequent TTI.

摘要翻译： 一种方法和系统从一组天线中选择天线的子集以在无线通信系统中传送用户数据。 使用第一天线子集在第一传输时间间隔（TTI）期间发送用户数据。 在第二TTI期间使用第二天线子集来传送导频音调。 对于天线的第一子集和来自用户数据和导频音的第二子天线子集估计相应的信道质量。 然后，基于估计，从天线的第一子集和第二天线子集中选择天线的最佳子集，以在随后的TTI期间发送用户数据。

公开(公告)号：US07684337B2

公开(公告)日：2010-03-23

申请号：US11333665

申请日：2006-01-17

申请人： Neelesh B. Mehta ,  Ritesh Madan ,  Andreas F. Molisch ,  Jinyun Zhang

发明人： Neelesh B. Mehta ,  Ritesh Madan ,  Andreas F. Molisch ,  Jinyun Zhang

IPC分类号： H04L12/26 ,  H04B3/36

CPC分类号： H04W40/06 ,  H04B7/026 ,  H04B7/0408 ,  H04W52/46 ,  Y02D70/322 ,  Y02D70/442 ,  Y02D70/444

摘要： A method and system for communicating information in a cooperative relay network of wireless nodes. The wireless nodes including a source, a set of relays, and a destination. Channel state information for each channel between a particular relay of the set of relays and the destination is estimated. A subset of the relays is selected based on the channel state information. The channel state information is fed back to the subset of relays. The source node can then broadcasting data packets from the source to the subset of relays, and the subset of relays forward coherently the data packets from the subset of relays to the destination using beamforming based on the channel state information, while adjusting power to minimize a total energy consumption in the network.

摘要翻译： 一种用于在无线节点的协作中继网络中传送信息的方法和系统。 无线节点包括源，一组中继和目的地。 估计该组继电器的特定继电器和目的地之间的每个通道的通道状态信息。 基于信道状态信息来选择继电器的子集。 信道状态信息反馈给继电器的子集。 源节点然后可以从源到广播数据分组到中继的子集，并且继电器的子集基于信道状态信息使用波束形成将来自中继的子集的数据分组向前转发到目的地，同时调整功率以最小化 网络总能耗。

公开(公告)号：US20090016312A1

公开(公告)日：2009-01-15

申请号：US11777356

申请日：2007-07-13

申请人： Zhifeng Tao ,  Chun Nie ,  Neelesh B. Mehta ,  Andreas F. Molisch ,  Jinyun Zhang

发明人： Zhifeng Tao ,  Chun Nie ,  Neelesh B. Mehta ,  Andreas F. Molisch ,  Jinyun Zhang

IPC分类号： H04B7/208

CPC分类号： H04B7/0628 ,  H04B7/0404 ,  H04B7/0413 ,  H04B7/0691 ,  H04B7/0874 ,  H04B7/0888 ,  H04B17/309

摘要： A method selects antennas in an OFDMA network. A channel state of a downlink is measured using a downlink subframe received in a mobile station from a base station. A channel state of an uplink is measured using an uplink subframe received in the base station from the mobile station. Next, the method compares the channel states to determine whether the downlink and the uplink are reciprocal or not. The mobile station can perform receive antenna selection based on the quality of the downlink channel state. The mobile station can also perform transmit antenna selection when instructed by the base station.

摘要翻译： 一种方法选择OFDMA网络中的天线。 使用从基站在移动台中接收的下行链路子帧来测量下行链路的信道状态。 使用从移动站在基站中接收的上行链路子帧来测量上行链路的信道状态。 接下来，该方法比较信道状态以确定下行链路和上行链路是否是倒数的。 移动台可以基于下行链路信道状态的质量来执行接收天线选择。 当基站指示时，移动站也可以执行发射天线选择。

公开(公告)号：US08054776B2

公开(公告)日：2011-11-08

申请号：US11941170

申请日：2007-11-16

申请人： Andreas F. Molisch ,  Raymond Yim ,  Neelesh B. Mehta

发明人： Andreas F. Molisch ,  Raymond Yim ,  Neelesh B. Mehta

IPC分类号： H04B7/204 ,  H04W4/00 ,  H04L12/43

CPC分类号： H04W52/367 ,  H04W52/241 ,  H04W52/50

摘要： A method and network communicate packets by assigning, in each one of a set of multiple transmitters, a power level to a packet to be transmitted during a time interval. The power level is selected from a set of power levels available for the set of multiple transmitters. The power levels in the set range from highest to lowest. There is one packet for each transmitter such that there is a set of packets to be transmitted during the time interval. The set of packets is transmitted concurrently during the time interval to enable decoding of at least one of the packets in the set of packets during the time interval.

摘要翻译： 一种方法和网络通过在一组多个发射机中的每一个中分配功率电平到在时间间隔内要发送的分组来传送分组。 功率电平是从一组可用于多个发射器的功率电平中选择的。 设定范围内的功率级别从最高到最低。 每个发射机有一个数据包，使得在时间间隔内有一组要发送的数据包。 在时间间隔期间并发传送数据包集合，以便能够在时间间隔期间对该组数据包中的至少一个数据包进行解码。

公开(公告)号：US20090129366A1

公开(公告)日：2009-05-21

申请号：US11941170

申请日：2007-11-16

申请人： Andreas F. Molisch ,  Raymond Yim ,  Neelesh B. Mehta

发明人： Andreas F. Molisch ,  Raymond Yim ,  Neelesh B. Mehta

IPC分类号： H04B7/212

CPC分类号： H04W52/367 ,  H04W52/241 ,  H04W52/50

摘要： A method and network communicate packets by assigning, in each one of a set of multiple transmitters, a power level to a packet to be transmitted during a time interval. The power level is selected from a set of power levels available for the set of multiple transmitters. The power levels in the set range from highest to lowest. There is one packet for each transmitter such that there is a set of packets to be transmitted during the time interval. The set of packets is transmitted concurrently during the time interval to enable decoding of at least one of the packets in the set of packets during the time interval.

摘要翻译： 一种方法和网络通过在一组多个发射机中的每一个中分配功率电平到在时间间隔内要发送的分组来传送分组。 功率电平是从一组可用于多个发射器的功率电平中选择的。 设定范围内的功率级别从最高到最低。 每个发射机有一个数据包，使得在时间间隔内有一组要发送的数据包。 在时间间隔期间并发传送数据包集合，以便能够在时间间隔期间对该组数据包中的至少一个数据包进行解码。

公开(公告)号：US09118980B2

公开(公告)日：2015-08-25

申请号：US12550168

申请日：2009-08-28

申请人： Neelesh B. Mehta

发明人： Neelesh B. Mehta

IPC分类号： G06F15/00 ,  H04Q9/00 ,  H04L29/08 ,  H04W52/02 ,  H04W4/02 ,  H04W84/02 ,  H04W4/00 ,  H04W84/00 ,  G06F19/00 ,  H04W52/28 ,  H04W84/18

CPC分类号： H04Q9/00 ,  G16H50/80 ,  H04L67/12 ,  H04Q2209/20 ,  H04Q2209/25 ,  H04Q2209/40 ,  H04Q2209/43 ,  H04W4/025 ,  H04W4/70 ,  H04W52/0245 ,  H04W52/28 ,  H04W84/005 ,  H04W84/02 ,  H04W84/18

摘要： Sensors within sensor node networks may communicate bio-event or other types of measurement results/decisions between each other using signal transmission variations. Each sensor node within a network and between networks may transmit and receive signals. A sensor node may scale a signal transmission power in a manner that is proportional to a confidence level of a decision or measurement about an event being detected. Each sensor node will receive transmissions from neighboring nodes, and can refine an estimate about an occurrence of the event at its location based on received signal strengths, for example.

摘要翻译： 传感器节点网络内的传感器可以使用信号传输变化在彼此之间传播生物事件或其他类型的测量结果/决策。 网络内和网络之间的每个传感器节点可以发送和接收信号。 传感器节点可以以与被检测的事件的判定或测量的置信水平成比例的方式缩放信号传输功率。 每个传感器节点将接收来自相邻节点的传输，并且可以例如基于所接收的信号强度来细化关于其位置处事件发生的估计。

公开(公告)号：US07778659B2

公开(公告)日：2010-08-17

申请号：US11780578

申请日：2007-07-20

申请人： Neelesh B. Mehta ,  Andreas F. Molisch ,  Raymond Yim

发明人： Neelesh B. Mehta ,  Andreas F. Molisch ,  Raymond Yim

IPC分类号： H04B7/00

CPC分类号： H04W52/286

摘要： The invention describes a method for transmitting a packet in a wireless network of nodes. At a beginning of a scheduled time slot a metric in the node is set, in which the metric indicates a need to transmit a packet to a receiver in the wireless network. The metric is mapped to a received power level and the packet is transmitted at a transmit power level so that the received power level is achieved at the receiver.

摘要翻译： 本发明描述了一种在节点的无线网络中发送分组的方法。 在调度时隙的开始，设置节点中的度量，其中度量指示需要向无线网络中的接收机发送分组。 度量被映射到接收的功率电平，并且以发射功率电平发送分组，使得在接收机处实现接收功率电平。

公开(公告)号：US07593342B2

公开(公告)日：2009-09-22

申请号：US11566846

申请日：2006-12-05

申请人： Andreas F. Molisch ,  Neelesh B. Mehta ,  Jonathan S. Yedidia ,  Zhifeng Tao ,  Zafer Sahinoglu ,  Philip V. Orlik ,  Jin Zhang

发明人： Andreas F. Molisch ,  Neelesh B. Mehta ,  Jonathan S. Yedidia ,  Zhifeng Tao ,  Zafer Sahinoglu ,  Philip V. Orlik ,  Jin Zhang

IPC分类号： G01R31/08

CPC分类号： H04B7/026 ,  H04B7/15592 ,  H04B7/2606 ,  H04L1/06 ,  H04L1/0618 ,  H04L2001/0092 ,  H04W52/46

摘要： A method selects a route in a wireless cooperative relay network of nodes, the nodes including a source, a set of relays, and a destination. A codeword is encoded as a data stream. The data stream is transmitted from a source to a destination via a set of relays. Mutual information is accumulated at a particular node to decode the data stream and recover the codeword. Then, a route from the source to the destination is selected based on channel state information between the nodes while transmitting and accumulating.

摘要翻译： 方法选择节点的无线协作中继网络中的路由，节点包括源，一组中继和目的地。 码字被编码为数据流。 数据流通过一组中继从源传送到目的地。 在特定节点处累积相互信息以解码数据流并恢复码字。 然后，在发送和累加的同时，基于节点之间的信道状态信息来选择从源到目的地的路由。