公开(公告)号：US07562279B2

公开(公告)日：2009-07-14

申请号：US11134545

申请日：2005-05-20

申请人： Juntan Zhang ,  Daqing Gu ,  Jinyun Zhang

发明人： Juntan Zhang ,  Daqing Gu ,  Jinyun Zhang

IPC分类号： H03M13/00

CPC分类号： H03M13/658 ,  H03M13/1117 ,  H03M13/112 ,  H03M13/1194 ,  H03M13/1197 ,  H03M13/6583

摘要： A method for decoding error-correcting codes normalizes messages generated by a bit node processor, and normalizes messages generated by the check node processor.

摘要翻译： 用于解码纠错码的方法对由比特节点处理器产生的消息进行归一化，并对由校验节点处理器产生的消息进行归一化。

公开(公告)号：US20080247370A1

公开(公告)日：2008-10-09

申请号：US12088285

申请日：2005-09-30

申请人： Daqing Gu ,  Hongyuan Zhang ,  Jinyun Zhang ,  Andreas F. Molisch

发明人： Daqing Gu ,  Hongyuan Zhang ,  Jinyun Zhang ,  Andreas F. Molisch

IPC分类号： H04Q7/24

CPC分类号： H04B7/0691 ,  H04B7/024 ,  H04B7/0695 ,  H04B7/0851 ,  H04B7/0874 ,  H04B7/088

摘要： A computer implemented method selects antennas in a multiple-input, multiple-output wireless local area network that includes multiple stations, and each station includes a set of antennas. Multiple consecutively transmitted sounding packets are received in a station. Each sounding packet corresponds to a different subset of the set of antennas. A channel matrix is estimated from the multiple consecutively transmitted sounding packets, and a subset of antennas is selected according to the channel matrix.

摘要翻译： 计算机实现的方法选择包括多个站的多输入多输出无线局域网中的天线，并且每个站包括一组天线。 在站中接收到多个连续发送的探测包。 每个探测包对应于该组天线的不同子集。 从多个连续发送的探测分组估计信道矩阵，并根据信道矩阵选择天线子集。

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。

公开(公告)号：US07403488B2

公开(公告)日：2008-07-22

申请号：US10780357

申请日：2004-02-17

申请人： Daqing Gu ,  Jinyun Zhang ,  Yuan Yuan

发明人： Daqing Gu ,  Jinyun Zhang ,  Yuan Yuan

IPC分类号： H04L1/00

CPC分类号： H04W72/1257 ,  H04L47/10 ,  H04L47/14 ,  H04L47/50 ,  H04L47/522 ,  H04L47/564 ,  H04L47/6265 ,  H04W28/22 ,  H04W84/12

摘要： A system and method schedule series of packets for transmission between terminals in a single wireless channel of a packet-switched local area network. The local area network can operate in an ad hoc mode or in infrastructure mode. A transmission rate is assigned to each of the terminals. The terminals can be mobile. Different terminals can be assigned different transmission rates, depending on a quality of the channel. That is, terminals transmitting via an error-free channel are assigned a higher transmission rate than terminals transmitting via an error-prone channel. Then, the series of packets are scheduled for transmission between the terminals such that each terminal receives a substantially equal amount of transmission time over an extended period of time.

摘要翻译： 一种用于在分组交换局域网的单个无线信道中的终端之间传输的分组的系统和方法计划。 局域网可以以自组织模式或基础架构模式运行。 对每个终端分配传输速率。 终端可以移动。 根据通道的质量，不同的终端可以分配不同的传输速率。 也就是说，经由无差错信道发送的终端被分配比通过容易出错的信道发送的终端更高的传输速率。 然后，一系列分组被调度用于在终端之间进行传输，使得每个终端在延长的时间段内接收基本相等的传输时间量。

公开(公告)号：US07330433B2

公开(公告)日：2008-02-12

申请号：US10376536

申请日：2003-02-28

申请人： Huai-Rong Shao ,  Chia Shen ,  Jinyun Zhang ,  Daqing Gu ,  Philip Orlik

发明人： Huai-Rong Shao ,  Chia Shen ,  Jinyun Zhang ,  Daqing Gu ,  Philip Orlik

IPC分类号： G06F11/00 ,  H04J3/14 ,  H04L1/00 ,  H04L12/28 ,  H04L12/56 ,  H04Q7/00

CPC分类号： H04L47/824 ,  H04L47/10 ,  H04L47/14 ,  H04L47/15 ,  H04L47/20 ,  H04L47/22 ,  H04L47/2416 ,  H04L47/2433 ,  H04L47/2441 ,  H04L47/283 ,  H04L47/50 ,  H04L47/522 ,  H04L47/564 ,  H04L47/624 ,  H04L47/6255 ,  H04L47/70 ,  H04L47/801 ,  H04L47/822 ,  H04L47/826 ,  H04L2012/6489 ,  H04W72/1226

摘要： A method allocates resources of a wireless communications network to traffic transmitted to user equipment over a channel of the network. A packet of the traffic to be stored in a selected queue is received. A maximum delay of the selected queue is determined, along with a start time, a finish time, and a queuing order. The packet is inserted in the selected queue according to the start time, the finish time and the queuing order, and then a weight of the selected queue is updated. Then, a next packet to be dequeued from the selected queue is scheduled, and the next packet is transmitted to the user equipment over the channel.

摘要翻译： 一种方法将无线通信网络的资源分配给通过网络的信道传输到用户设备的流量。 将接收要存储在所选队列中的流量的分组。 确定所选队列的最大延迟以及开始时间，完成时间和排队顺序。 根据开始时间，完成时间和排队顺序将数据包插入到所选择的队列中，然后更新所选队列的权重。 然后，调度从所选队列出队的下一个分组，并将下一个分组通过该信道发送给用户设备。

公开(公告)号：US07092436B2

公开(公告)日：2006-08-15

申请号：US10057179

申请日：2002-01-25

申请人： Xiaoqiang Ma ,  Hisashi Kobayashi ,  Stuart C. Schwartz ,  Daqing Gu ,  Jinyun Zhang

发明人： Xiaoqiang Ma ,  Hisashi Kobayashi ,  Stuart C. Schwartz ,  Daqing Gu ,  Jinyun Zhang

IPC分类号： H03H7/30 ,  H03H7/40

CPC分类号： H04L25/0242 ,  H04L25/0204 ,  H04L25/0224 ,  H04L27/2647

摘要： A system and method detect symbols of a modulated signal received via a plurality of channels of a wireless communications system. A symbol transmitted via the channels is initially estimated based on the channel estimate from either pilot symbol or previously estimated symbol, and then channel estimate is updated. The next estimate of the symbol is computed by using updated channel information and maximizing the expectation of the log likelihood function. The next estimate is then quantized according to the signal constellation. The quantized estimate of the symbol is compared with the previous estimate of the symbol to determine if the previous estimate of the symbol and the quantized next estimate of the symbol have converged. Otherwise, the quantized next estimate of the symbol is made as the input for the next iteration, and the updating, optimizing, quantizing, and comparing are repeated until the estimate converges.

公开(公告)号：US07023935B2

公开(公告)日：2006-04-04

申请号：US09994540

申请日：2001-11-27

申请人： Lei Cao ,  Jinyun Zhang ,  Phillip Orlik ,  Daqing Gu

发明人： Lei Cao ,  Jinyun Zhang ,  Phillip Orlik ,  Daqing Gu

IPC分类号： H04L27/06

CPC分类号： H04L25/0238 ,  H04L25/0204 ,  H04L25/025 ,  H04L25/03203 ,  H04L25/03292 ,  H04L25/03331

摘要： A method and system performs blind joint channel estimation and signal detection in a communication system that includes multiple channels for transmitting symbols. The multiple channels are estimated using a small number of symbols initially received through the multiple channels. When the channels have been estimated, a single best channel is selected. From then on, the bulk of the symbols are detected only on the best channel, while the best channel is updated.

公开(公告)号：US20050180444A1

公开(公告)日：2005-08-18

申请号：US10780357

申请日：2004-02-17

申请人： Daqing Gu ,  Jinyun Zhang ,  Yuan Yuan

发明人： Daqing Gu ,  Jinyun Zhang ,  Yuan Yuan

IPC分类号： H04B7/26 ,  H04L12/28 ,  H04L12/56

CPC分类号： H04W72/1257 ,  H04L47/10 ,  H04L47/14 ,  H04L47/50 ,  H04L47/522 ,  H04L47/564 ,  H04L47/6265 ,  H04W28/22 ,  H04W84/12

摘要： A system and method schedule series of packets for transmission between terminals in a single wireless channel of a packet-switched local area network. The local area network can operate in an ad hoc mode or in infrastructure mode. A transmission rate is assigned to each of the terminals. The terminals can be mobile. Different terminals can be assigned different transmission rates, depending on a quality of the channel. That is, terminals transmitting via an error-free channel are assigned a higher transmission rate than terminals transmitting via an error-prone channel. Then, the series of packets are scheduled for transmission between the terminals such that each terminal receives a substantially equal amount of transmission time over an extended period of time.

摘要翻译： 一种用于在分组交换局域网的单个无线信道中的终端之间传输的分组的系统和方法计划。 局域网可以以自组织模式或基础架构模式运行。 对每个终端分配传输速率。 终端可以移动。 根据通道的质量，不同的终端可以分配不同的传输速率。 也就是说，经由无差错信道发送的终端被分配比通过容易出错的信道发送的终端更高的传输速率。 然后，一系列分组被调度用于在终端之间进行传输，使得每个终端在延长的时间段内接收大致相等量的传输时间。

公开(公告)号：US08284686B2

公开(公告)日：2012-10-09

申请号：US12293458

申请日：2006-03-30

申请人： Daqing Gu ,  Hongyuan Zhang ,  Jinyun Zhang ,  Andreas F. Molisch

发明人： Daqing Gu ,  Hongyuan Zhang ,  Jinyun Zhang ,  Andreas F. Molisch

IPC分类号： H04W4/00

CPC分类号： H04B7/0691 ,  H04B7/0608 ,  H04B7/061 ,  H04B7/0626 ,  H04B7/0634 ,  H04B7/0636 ,  H04B7/0695 ,  H04B7/0874 ,  H04B7/088 ,  H04W84/12

摘要： A method selects antennas in a multiple-input, multiple-output (MIMO) wireless local area network (WLAN) that includes a plurality of stations, and each station includes a set of antennas. Plural consecutive packets, received at a station, include plural consecutive sounding packets. Each sounding packet corresponds to a different subset of the set of antennas, and at least one of the plural consecutive packets includes a high throughput (HT) control field including a signal to initiate antenna selection and a number N indicative of a number of sounding packets which follow the at least one packet including the HT control field and which are to be used for antenna selection. A channel matrix is estimated based on a characteristic of the channel as indicated by the received N sounding packets, and a subset of antennas is selected according to the channel matrix. Station and computer program product embodiments include similar features.

摘要翻译： 一种方法选择包括多个站的多输入多输出（MIMO）无线局域网（WLAN）中的天线，并且每个站包括一组天线。 在站处接收的多个连续分组包括多个连续的探测分组。 每个探测分组对应于该组天线的不同子集，并且多个连续分组中的至少一个分组包括高吞吐量（HT）控制字段，包括用于发起天线选择的信号和指示多个探测分组的数量N 其遵循至少一个包括HT控制字段并将用于天线选择的分组。 基于由接收的N个探测分组指示的信道的特性来估计信道矩阵，并且根据信道矩阵选择天线的子集。 站和计算机程序产品实施例包括类似的特征。