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1. 发明申请

US20180192349A1 Transmission of OFDM Symbols 审中-公开
公开(公告)号：US20180192349A1
公开(公告)日：2018-07-05
申请号：US15811087
申请日：2017-11-13
申请人： Comcast Cable Communications, LLC
发明人： Brian G. Agee , Matthew C. Bromberg
IPC分类号： H04W40/04 , H04L5/00
CPC分类号： H04W40/04 , H04B7/0413 , H04B7/0417 , H04B7/0443 , H04B7/0456 , H04L5/0007 , H04L5/0044 , H04L5/005 , H04L27/26 , H04L27/2602 , H04L27/2605 , H04L27/2607 , H04L27/2627 , H04L27/263 , H04L27/2646 , H04W16/14 , H04W24/02 , H04W28/06 , H04W52/241 , H04W52/265 , H04W52/42 , H04W72/04 , H04W72/042 , H04W72/044 , H04W72/0453 , H04W72/085 , H04W88/08 , Y02D70/1222 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/166 , Y02D70/22 , Y02D70/23 , Y02D70/444
摘要： Methods and systems are described in which a node may cause a plurality of orthogonal frequency division multiplexing (OFDM) symbols to be transmitted. The OFDM symbols may comprise at least a portion of a pilot and/or user data.

2. 发明申请

US20170332304A1 Data Routing for OFDM Transmissions 有权
公开(公告)号：US20170332304A1
公开(公告)日：2017-11-16
申请号：US15595432
申请日：2017-05-15
申请人： Comcast Cable Communications, LLC
发明人： Brian G. Agee , Matthew C. Bromberg
IPC分类号： H04W40/04 , H04L5/00 , H04B7/0413
CPC分类号： H04W40/04 , H04B7/0413 , H04B7/0417 , H04B7/0443 , H04B7/0456 , H04L5/0007 , H04L5/0044 , H04L5/005 , H04L27/26 , H04L27/2602 , H04L27/2605 , H04L27/2607 , H04L27/2627 , H04L27/263 , H04L27/2646 , H04W16/14 , H04W24/02 , H04W28/06 , H04W52/241 , H04W52/265 , H04W52/42 , H04W72/04 , H04W72/042 , H04W72/044 , H04W72/0453 , H04W72/085 , H04W88/08 , Y02D70/1222 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/166 , Y02D70/22 , Y02D70/23 , Y02D70/444
摘要： Methods and systems are described for causing orthogonal frequency division multiplexing (OFDM) transmission of various portions of data via various nodes. For example, a first portion of the data may be transmitted, via a first node and using OFDM, to at least a second node. It may be determined that a second portion of the data is to be routed via a different node (such as a third node) for transmission. The second portion of the data may be transmitted, via the third node and using OFDM, to at least the second node.

3. 发明申请

US20160380712A1 CHANNEL SOUNDING FOR IMPROVED SYSTEM PERFORMANCE 审中-公开
公开(公告)号：US20160380712A1
公开(公告)日：2016-12-29
申请号：US15258243
申请日：2016-09-07
申请人： InterDigital Technology Corporation
发明人： Joseph S. Levy
IPC分类号： H04B17/26 , H04W72/04 , H04L27/26 , H04W24/02 , H04B7/04
CPC分类号： H04B17/26 , H04B7/02 , H04B7/0413 , H04B7/0417 , H04B7/0421 , H04B7/0443 , H04B7/0619 , H04B7/0626 , H04L1/0001 , H04L1/0003 , H04L1/0026 , H04L5/0044 , H04L27/26 , H04L27/2608 , H04L69/323 , H04L69/324 , H04W24/02 , H04W52/42 , H04W72/0413 , H04W72/042
摘要： A transmitter generates and transmits a low rate signal to its intended receiver. Upon receiving the low rate signal, the intended receiver generates and transmits a channel sounding response (CSR), said CSR being a short burst having a predefined transmit format and carrying predetermined information. The transmitter then analyzes the CSR and determines uplink channel response, estimates downlink channel response, and determines appropriate transmit parameter settings based on the analysis and downlink response estimate. Adjustment of the transmit parameters can be made in either the MAC or PHY layer or in a combination of both. After adjusting its transmit parameters and modulating sub-carriers with user-data according to the determined transmit settings, the transmitter transmits the user-data to the receiver on a preferred portion of bandwidth. In a preferred embodiment, the transmitter also generates and transmits a transmit format control (TFC) signal containing the determined transmit parameter settings, including sub-carrier modulation information, to the receiver.

4. 发明申请

US20160087699A1 CHANNEL SOUNDING FOR IMPROVED SYSTEM PERFORMANCE 有权
公开(公告)号：US20160087699A1
公开(公告)日：2016-03-24
申请号：US14960518
申请日：2015-12-07
申请人： InterDigital Technology Corporation
发明人： Joseph S. LEVY
IPC分类号： H04B7/04 , H04W52/42 , H04L5/00 , H04B7/06 , H04L1/00
CPC分类号： H04B17/26 , H04B7/02 , H04B7/0413 , H04B7/0417 , H04B7/0421 , H04B7/0443 , H04B7/0619 , H04B7/0626 , H04L1/0001 , H04L1/0003 , H04L1/0026 , H04L5/0044 , H04L27/26 , H04L27/2608 , H04L69/323 , H04L69/324 , H04W24/02 , H04W52/42 , H04W72/0413 , H04W72/042
摘要： A transmitter generates and transmits a low rate signal to its intended receiver. Upon receiving the low rate signal, the intended receiver generates and transmits a channel sounding response (CSR), said CSR being a short burst having a predefined transmit format and carrying predetermined information. The transmitter then analyzes the CSR and determines uplink channel response, estimates downlink channel response, and determines appropriate transmit parameter settings based on the analysis and downlink response estimate. Adjustment of the transmit parameters can be made in either the MAC or PHY layer or in a combination of both. After adjusting its transmit parameters and modulating sub-carriers with user-data according to the determined transmit settings, the transmitter transmits the user-data to the receiver on a preferred portion of bandwidth. In a preferred embodiment, the transmitter also generates and transmits a transmit format control (TFC) signal containing the determined transmit parameter settings, including sub-carrier modulation information, to the receiver.

5. 发明授权

US09295062B2 Method and arrangement for power allocation in communication systems 有权
标题翻译：通信系统中功率分配的方法和布置
公开(公告)号：US09295062B2
公开(公告)日：2016-03-22
申请号：US14005215
申请日：2011-03-16
申请人： Andreas Nilsson , Fredrik Athley , Mikael Coldrey
发明人： Andreas Nilsson , Fredrik Athley , Mikael Coldrey
IPC分类号： H04W72/04 , H04B7/04 , H04W52/42 , H04L1/00 , H04L5/00 , H04W52/14 , H04W52/34
CPC分类号： H04W72/0473 , H04B7/0434 , H04B7/0443 , H04B7/0447 , H04L1/0003 , H04L1/0026 , H04L1/0031 , H04L5/0023 , H04L5/0039 , H04L5/0051 , H04L5/0057 , H04L5/006 , H04W52/146 , H04W52/346 , H04W52/42
摘要： In a method of allocating power to data streams in a communication system, providing (S10) CQI for each of a plurality of data streams between a radio base station node and a user equipment node in the system. Subsequently, allocating (S20) transmit power to each of the plurality of data streams based at least on the provided respective CQI, and determining coding and modulation (S30) for the data streams based on at least the allocated power.
摘要翻译：在通信系统中为数据流分配功率的方法中，为系统中的无线基站节点和用户设备节点之间的多个数据流中的每一个提供（S10）CQI。随后，至少基于所提供的各个CQI分配（S20）向多个数据流中的每一个发送功率，并且至少基于所分配的功率来确定数据流的编码和调制（S30）。

6. 发明授权

US09197297B2 Network communication using diversity 有权
公开(公告)号：US09197297B2
公开(公告)日：2015-11-24
申请号：US14480535
申请日：2014-09-08
申请人： Comcast Cable Communications, LLC
发明人： Brian G. Agee , Matthew C. Bromberg
IPC分类号： H04B7/04 , H04W24/02 , H04W28/06 , H04L27/26 , H04W52/24 , H04W52/26 , H04W52/42 , H04W16/14 , H04W88/08
CPC分类号： H04W40/04 , H04B7/0413 , H04B7/0417 , H04B7/0443 , H04B7/0456 , H04L5/0007 , H04L5/0044 , H04L5/005 , H04L27/26 , H04L27/2602 , H04L27/2605 , H04L27/2607 , H04L27/2627 , H04L27/263 , H04L27/2646 , H04W16/14 , H04W24/02 , H04W28/06 , H04W52/241 , H04W52/265 , H04W52/42 , H04W72/04 , H04W72/042 , H04W72/044 , H04W72/0453 , H04W72/085 , H04W88/08 , Y02D70/1222 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/166 , Y02D70/22 , Y02D70/23 , Y02D70/444
摘要： An apparatus for generating at least one signal based on at least one aspect of at least two received signals is provided. The apparatus comprises: a diverse antennae array of M antennae, where M is greater than or equal to two; at least one multiple-input and multiple-output capable transceiver in communication with each antenna in the diverse antennae array of M antennae; encoding circuitry capable of causing first data to be encoded; decoding circuitry capable of causing second data to be decoded; and processing capable of causing diversity combining, where the processing circuitry is in communication with the multiple-input and multiple-output capable transceiver, the encoding circuitry, and the decoding circuitry. In operation, the processing circuitry is capable of causing the apparatus to: receive at least two first signals, combine at least two of the at least first two signals, generate at least two second signals based on at least one aspect of the at least two first signals, and simultaneously transmit the at least two second signals. Additionally, the apparatus is configured such that at least one of the at least two second signals is capable of being received by a multiple-input capable node.

7. 发明授权

US09184820B2 Spatio-temporal processing for communication 有权
公开(公告)号：US09184820B2
公开(公告)日：2015-11-10
申请号：US14271592
申请日：2014-05-07
申请人： Cisco Technology, Inc.
发明人： Gregory G. Raleigh , Vincent K. Jones, IV , Michael A. Pollack
IPC分类号： H04L27/04 , H04B7/06 , H04L1/00 , H04L1/06 , H04L25/02 , H04B1/10 , H04B7/04 , H04B7/08 , H04L1/18 , H04L5/00 , H04L25/03 , H04L27/26 , H04W16/28 , H04W72/00 , H04W88/02 , H04W88/08 , H04B7/10
CPC分类号： H04B7/0615 , H04B1/1081 , H04B7/0443 , H04B7/0469 , H04B7/0619 , H04B7/0626 , H04B7/0658 , H04B7/0669 , H04B7/068 , H04B7/0842 , H04B7/0854 , H04B7/10 , H04L1/0041 , H04L1/0054 , H04L1/0057 , H04L1/0059 , H04L1/006 , H04L1/0065 , H04L1/0071 , H04L1/0606 , H04L1/0618 , H04L1/18 , H04L1/1812 , H04L5/0007 , H04L5/0023 , H04L5/0028 , H04L5/0046 , H04L25/0204 , H04L25/021 , H04L25/0212 , H04L25/0242 , H04L25/03305 , H04L25/03331 , H04L25/03343 , H04L27/2601 , H04L27/2608 , H04L27/2626 , H04L27/2647 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802 , H04W16/28 , H04W72/00 , H04W88/02 , H04W88/08
摘要： A space-time signal processing system with advantageously reduced complexity. The system may take advantage of multiple transmitter antenna elements and/or multiple receiver antenna elements, or multiple polarizations of a single transmitter antenna element and/or single receiver antenna element. The system is not restricted to wireless contexts and may exploit any channel having multiple inputs or multiple outputs and certain other characteristics. Multi-path effects in a transmission medium cause a multiplicative increase in capacity.

8. 发明申请

US20150063254A1 LOW-COMPLEXITY PRECODER DESIGN FOR LARGE-SCALE MIMO COMMUNICATION SYSTEMS 有权
标题翻译：用于大规模MIMO通信系统的低复杂度预编码器设计
公开(公告)号：US20150063254A1
公开(公告)日：2015-03-05
申请号：US14465053
申请日：2014-08-21
申请人： NEC Laboratories America, Inc.
发明人： Guosen Yue , Narayan Prasad , Sampath Rangarajan , Samet Oymak
IPC分类号： H04B7/04 , H04L5/00 , H04W72/04
CPC分类号： H04B7/0465 , H04B7/0439 , H04B7/0443 , H04B7/0452 , H04B7/0469 , H04B7/0617 , H04L5/0037 , H04W52/367 , H04W52/42
摘要： A method and system are provided. The method includes providing transmit precoders for a multiple-input and multiple-output communication system having a plurality of transmit antennas. The plurality of transmit antennas are for forming, using precoding, a plurality of channels such that each of the plurality of channels are configurable to serve a respective one of a plurality of users. The providing step includes imposing a respective average transmit antenna power constraint on each of the plurality of transmit antennas. The providing step further includes determining a diagonal precoder responsive to applying column scaling to a downlink channel matrix having a plurality of rows and a plurality of columns. The providing step additionally includes generating, from the diagonal precoder, a weighted precoder in accordance with the respective average antenna power constraint by optimizing a weighted sum-rate obtained upon transmitting respective signals over the plurality of channels.
摘要翻译：提供了一种方法和系统。该方法包括为具有多个发射天线的多输入和多输出通信系统提供发射预编码器。多个发射天线用于使用预编码形成多个信道，使得多个信道中的每一个可配置为服务于多个用户中的相应一个。提供步骤包括在多个发射天线中的每一个上施加相应的平均发射天线功率约束。所述提供步骤还包括：响应于对具有多个行和多个列的下行链路信道矩阵应用列缩放来确定对角预编码器。提供步骤还包括从对角线预编码器根据相应的平均天线功率约束，通过优化通过多个信道发送各个信号而获得的加权和频率来生成加权预编码器。

9. 发明授权

US08917583B2 Channel sounding for improved system performance 有权
标题翻译：通道声音提高系统性能
公开(公告)号：US08917583B2
公开(公告)日：2014-12-23
申请号：US13960071
申请日：2013-08-06
申请人： InterDigital Technology Corporation
发明人： Joseph S. Levy
IPC分类号： H04W72/04 , H04B7/06 , H04L1/00 , H04W52/42 , H04B7/04 , H04L27/26 , H04B7/02
CPC分类号： H04B17/26 , H04B7/02 , H04B7/0413 , H04B7/0417 , H04B7/0421 , H04B7/0443 , H04B7/0619 , H04B7/0626 , H04L1/0001 , H04L1/0003 , H04L1/0026 , H04L5/0044 , H04L27/26 , H04L27/2608 , H04L69/323 , H04L69/324 , H04W24/02 , H04W52/42 , H04W72/0413 , H04W72/042
摘要： A transmitter generates and transmits a low rate signal to its intended receiver. Upon receiving the low rate signal, the intended receiver generates and transmits a channel sounding response (CSR), said CSR being a short burst having a predefined transmit format and carrying predetermined information. The transmitter then analyzes the CSR and determines uplink channel response, estimates downlink channel response, and determines appropriate transmit parameter settings based on the analysis and downlink response estimate. Adjustment of the transmit parameters can be made in either the MAC or PHY layer or in a combination of both. After adjusting its transmit parameters and modulating sub-carriers with user-data according to the determined transmit settings, the transmitter transmits the user-data to the receiver on a preferred portion of bandwidth. In a preferred embodiment, the transmitter also generates and transmits a transmit format control (TFC) signal containing the determined transmit parameter settings, including sub-carrier modulation information, to the receiver.
摘要翻译：发射机产生并发送低速率信号到其预期的接收机。在接收到低速率信号时，预期接收机产生并发送信道探测响应（CSR），所述CSR是具有预定义的发射格式并承载预定信息的短脉冲串。发射机然后分析CSR并确定上行链路信道响应，估计下行链路信道响应，并且基于分析和下行链路响应估计来确定适当的传输参数设置。发送参数的调整可以在MAC或PHY层中进行，也可以在两者的组合中进行。在根据所确定的发射设置调整其发射参数和用用户数据调制子载波之后，发射机在带宽的优选部分上将用户数据发送到接收机。在优选实施例中，发射机还向接收机生成并发送包含确定的发射参数设置（包括子载波调制信息）的发射格式控制（TFC）信号。

10. 发明授权

US08913529B2 MIMO WLAN system 有权
标题翻译： MIMO WLAN系统
公开(公告)号：US08913529B2
公开(公告)日：2014-12-16
申请号：US12112728
申请日：2008-04-30
申请人： J. Rodney Walton , Mark S. Wallace , John W. Ketchum , Steven J. Howard
发明人： J. Rodney Walton , Mark S. Wallace , John W. Ketchum , Steven J. Howard
IPC分类号： H04J3/00 , H04K1/10 , H04L1/06 , H04B7/06 , H04L1/18 , H04B7/08 , H04L27/26 , H04B7/02 , H04W72/12 , H04L25/02 , H04W28/20 , H04B7/04 , H04W84/12 , H04L1/00 , H04W52/50 , H04L25/03 , H04L1/08 , H04L5/00 , H04W28/22 , H04L1/16 , H04W52/42
CPC分类号： H04L5/0048 , H04B7/022 , H04B7/0421 , H04B7/043 , H04B7/0443 , H04B7/0669 , H04B7/0689 , H04B7/0697 , H04B7/0854 , H04B7/0871 , H04L1/0003 , H04L1/0009 , H04L1/0017 , H04L1/0025 , H04L1/0059 , H04L1/0061 , H04L1/0069 , H04L1/0071 , H04L1/0606 , H04L1/0625 , H04L1/0656 , H04L1/08 , H04L1/16 , H04L1/1887 , H04L5/0023 , H04L25/0204 , H04L25/0226 , H04L25/0228 , H04L25/0248 , H04L25/03343 , H04L27/2602 , H04L27/2607 , H04L27/2647 , H04L2025/03414 , H04L2025/03426 , H04W28/20 , H04W28/22 , H04W52/42 , H04W52/50 , H04W72/12 , H04W84/12
摘要： A multiple-access MIMO WLAN system that employs MIMO, OFDM, and TDD. The system (1) uses a channel structure with a number of configurable transport channels, (2) supports multiple rates and transmission modes, which are configurable based on channel conditions and user terminal capabilities, (3) employs a pilot structure with several types of pilot (e.g., beacon, MIMO, steered reference, and carrier pilots) for different functions, (4) implements rate, timing, and power control loops for proper system operation, and (5) employs random access for system access by the user terminals, fast acknowledgment, and quick resource assignments. Calibration may be performed to account for differences in the frequency responses of transmit/receive chains at the access point and user terminals. The spatial processing may then be simplified by taking advantage of the reciprocal nature of the downlink and uplink and the calibration.
摘要翻译：采用MIMO，OFDM和TDD的多接入MIMO WLAN系统。系统（1）使用具有多个可配置传输信道的信道结构，（2）支持基于信道条件和用户终端能力可配置的多种速率和传输模式，（3）采用具有多种类型（4）实现速率，定时和功率控制环路，实现系统正常运行，（5）采用随机接入方式进行系统接入，由用户终端，快速确认和快速的资源分配。可以执行校准以考虑接入点和用户终端处的发射/接收链的频率响应的差异。然后可以通过利用下行链路和上行链路的相互性质和校准来简化空间处理。

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