公开(公告)号：US08009580B2

公开(公告)日：2011-08-30

申请号：US12117219

申请日：2008-05-08

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

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

IPC分类号： H04W4/00

CPC分类号： H04B7/0874 ,  H04B7/063 ,  H04B7/0691 ,  H04L5/0007

摘要： 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.

摘要翻译： 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：US20110044158A1

公开(公告)日：2011-02-24

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：US20100189069A1

公开(公告)日：2010-07-29

申请号：US12359470

申请日：2009-01-26

申请人： Zafer Sahinoglu ,  Yi Huang ,  Qinghe Du ,  Zhifeng Tao ,  Ghulam Bhatti ,  Jinyun Zhang

发明人： Zafer Sahinoglu ,  Yi Huang ,  Qinghe Du ,  Zhifeng Tao ,  Ghulam Bhatti ,  Jinyun Zhang

IPC分类号： H04W72/04 ,  H04L27/28

CPC分类号： H04L5/0007 ,  H04L5/0037 ,  H04L5/006 ,  H04L5/0064 ,  H04W72/042 ,  H04W72/0473 ,  Y02D70/146

摘要： A method and system provide multiple-access control and frequency band allocation, and transmission time sharing among multiple users in orthogonal frequency-division multiple-access (OFDMA) and time-division multiple-access (TDMA) networks. The method can be applied to uplinks and downlinks of multi-user, multi-carrier communication networks. Under a total transmission-power minimization constraint, the method can allocate carriers and transmission time to users optimally, and at the same time, can guarantee a data rate or equivalently a latency requirement of each user.

摘要翻译： 一种方法和系统提供多路访问控制和频带分配，以及在正交频分多址（OFDMA）和时分多址（TDMA）网络中的多个用户之间的传输时间共享。 该方法可以应用于多用户，多载波通信网络的上行链路和下行链路。 在总传输功率最小化约束条件下，该方法可以最佳地向用户分配载波和传输时间，同时可以保证每个用户的数据速率或等效的等待时间要求。

公开(公告)号：US07756099B2

公开(公告)日：2010-07-13

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：US20100110996A1

公开(公告)日：2010-05-06

申请号：US12263236

申请日：2008-10-31

申请人： Zhifeng Tao ,  Jinyun Zhang ,  Weihuang Fu

发明人： Zhifeng Tao ,  Jinyun Zhang ,  Weihuang Fu

IPC分类号： H04W4/00

CPC分类号： H04W16/02 ,  H04W16/30 ,  H04W52/243 ,  H04W52/283 ,  H04W52/343 ,  H04W52/346 ,  H04W72/0453

摘要： A method allocates resources 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. Each cell includes a center and edge zone. A node weighted constraint graph is constructed for the network. Maximal independent sets in the graph are searched as sub-channels are allocated to the MSs in edge zones. Remaining bandwidth is allocated to the MSs in the center zones. Power is assigned to the sub-channels so that inter-cell interference is minimized and traffic load is maximized.

摘要翻译： 一种方法在包括一组基站（BS）的正交频分多址（OFDMA）网络和每个BS的一组移动台（MS）中分配资源。 每个单元格包括一个中心和边缘区域。 为网络构建节点加权约束图。 当边缘区域中的MS分配子信道时，搜索图中的最大独立集合。 剩余带宽被分配给中心区域中的MS。 功率被分配给子信道，使得小区间干扰最小化并且业务负载最大化。

公开(公告)号：US20090225883A1

公开(公告)日：2009-09-10

申请号：US12403025

申请日：2009-03-12

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

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

IPC分类号： H04L27/28 ,  H04W84/00

CPC分类号： H04W72/046 ,  H04W4/08 ,  H04W24/10 ,  H04W72/085

摘要： A base station transmits a set of sounding requests to a set of mobile station (MS) in a cell, using a set of beams, wherein there is one beam for each sounding request. Qualities of sounding signals transmitted by the set of MSs in response to receiving the sounding request are measured, and the set of MSs are grouping into subsets according to the qualities, wherein there is one subset of MSs associated with each beam.

摘要翻译： 基站使用一组波束向小区中的一组移动台（MS）发送一组探测请求，其中对于每个探测请求存在一个波束。 测量响应于接收到探测请求的MS组发送的探测信号的质量，并且根据质量将MS组合成子集，其中存在与每个波束相关联的MS的一个子集。

公开(公告)号：US20080165881A1

公开(公告)日：2008-07-10

申请号：US11850262

申请日：2007-09-05

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

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

IPC分类号： H04B7/02

CPC分类号： H04B7/2606 ,  H04B7/15542 ,  H04L5/023 ,  H04L27/2602

摘要： A method accesses channels in an OFDMA mobile multihop relay wireless network. The method partitions a downlink sub-frame into at least one downlink access zone and a set of downlink relay zones. The uplink subframe is partitioned into at least one uplink access zone and a set of uplink relay zones. During the downlink access zone, the base station and the relay stations transmit only to the set of mobile stations. During the downlink relay station, the base station and the set of relay stations communicate with each other, while the mobile stations are idle. During the uplink access zone, the set of mobile stations transmit only to the set of relay stations and the base station. During the uplink relay station, the base station and the set of relay stations communicate with each other, while the mobile stations are idle.

摘要翻译： 一种方法接入OFDMA移动多跳中继无线网络中的信道。 该方法将下行链路子帧划分为至少一个下行链路接入区域和一组下行链路中继区域。 上行链路子帧划分为至少一个上行链路接入区域和一组上行链路中继区域。 在下行链路接入区域期间，基站和中继站仅发送到一组移动台。 在下行链路中继站期间，基站和中继站组彼此通信，而移动台空闲。 在上行接入区域期间，该组移动台仅向中继站和基站组发送。 在上行链路中继站期间，基站和中继站组彼此通信，而移动站空闲。

公开(公告)号：US20080165776A1

公开(公告)日：2008-07-10

申请号：US11620947

申请日：2007-01-08

申请人： Zhifeng Tao ,  Toshiyuki Kuze ,  Jinyun Zhang

发明人： Zhifeng Tao ,  Toshiyuki Kuze ,  Jinyun Zhang

IPC分类号： H04L12/56

CPC分类号： H04B7/2606 ,  H04W76/12 ,  H04W88/04

摘要： A method communicates packets in a relay network. The packets are communicated from a set of mobile stations to a relay station using a set of connections, there being one connection between each mobile station and the relay station. The packets are communicated between the relay station and a base station using a relay tunnel connection, between the relay station and its adjacent relay station the packets are communicated using the relay tunnel connection.

摘要翻译： 一种方法在中继网络中传送数据包。 使用一组连接将数据包从一组移动站传送到中继站，每个移动站和中继站之间存在一个连接。 分组在中继站和基站之间使用中继隧道连接进行通信，在中继站与其相邻中继站之间，使用中继隧道连接来传送分组。

公开(公告)号：US07385976B2

公开(公告)日：2008-06-10

申请号：US10917053

申请日：2004-08-12

申请人： Daqing Gu ,  Zhifeng Tao ,  Jinyun Zhang

发明人： Daqing Gu ,  Zhifeng Tao ,  Jinyun Zhang

IPC分类号： H04L12/56 ,  H04Q7/24

CPC分类号： H04L1/165 ,  H04L1/1628 ,  H04L1/1671

摘要： A method selectively acknowledges data packets in a network including a multiple stations connected by a common wireless channel. A transmitting station requests a block acknowledgement from a receiving station. The transmitting station transmits a block of data packets to the receiving station. The receiving station determines a number of successfully received data packets and a number of incorrectly received packets. Then, the receiving station selectively acknowledges only the successfully received data packets if the number of usefully received data packets is less than the number of incorrectly received data packets, and otherwise acknowledging only the incorrectly received packets.

摘要翻译： 一种方法选择性地确认包括通过公共无线信道连接的多个站的网络中的数据分组。 发送站请求来自接收站的块确认。 发送站向接收站发送数据分组块。 接收站确定成功接收的数据包的数量和一些不正确接收的包。 然后，如果有效接收的数据分组的数量小于错误接收的数据分组的数量，则接收站选择性地仅确认成功接收的数据分组，否则仅确认不正确接收的分组。

公开(公告)号：US20060034247A1

公开(公告)日：2006-02-16

申请号：US10917053

申请日：2004-08-12

申请人： Daqing Gu ,  Zhifeng Tao ,  Jinyun Zhang

发明人： Daqing Gu ,  Zhifeng Tao ,  Jinyun Zhang

IPC分类号： H04J3/24

CPC分类号： H04L1/165 ,  H04L1/1628 ,  H04L1/1671

摘要： A method selectively acknowledges data packets in a network including a multiple stations connected by a common wireless channel. A transmitting station requests a block acknowledgement from a receiving station. The transmitting station transmits a block of data packets to the receiving station. The receiving station determines a number of successfully received data packets and a number of incorrectly received packets. Then, the receiving station selectively acknowledges only the successfully received data packets if the number of usefully received data packets is less than the number of incorrectly received data packets, and otherwise acknowledging only the incorrectly received packets.

摘要翻译： 一种方法选择性地确认包括通过公共无线信道连接的多个站的网络中的数据分组。 发送站请求来自接收站的块确认。 发送站向接收站发送数据分组块。 接收站确定成功接收的数据包的数量和一些不正确接收的包。 然后，如果有效接收的数据分组的数量小于错误接收的数据分组的数量，则接收站选择性地仅确认成功接收的数据分组，否则仅确认不正确接收的分组。