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    Channel scanning and channel selection in a wireless communication network
    3.
    发明授权
    Channel scanning and channel selection in a wireless communication network 有权
    无线通信网络中的频道扫描和频道选择

    公开(公告)号：US08432826B2

    公开(公告)日：2013-04-30

    申请号：US12913200

    申请日：2010-10-27

    申请人： Sam Heidari ,  Kapil Gulati ,  Ali Rouhi ,  Ravi Narasimhan ,  Rajkumar Samuel

    发明人： Sam Heidari ,  Kapil Gulati ,  Ali Rouhi ,  Ravi Narasimhan ,  Rajkumar Samuel

    IPC分类号： H04L12/28 ,  H04W4/00 ,  H04W72/00 ,  H04B7/212

    CPC分类号： H04W72/085 ,  H04W36/06 ,  H04W48/16

    摘要： A method and apparatus to select the best channel of a wireless network for data communication at any given time, during normal operation of the network, is described. The network may be an IEEE standard 802.11 compliant network. Channel scanning may be performed in any station on the wireless network, such as an access point (AP) or a mobile station, or both. Channel scanning may be performed during data communication idle time, or simultaneously with data communication on the network. The technique can be implemented in a multiple-input multiple-output (MIMO) communication system, where the antenna or antennas used for channel scanning can be selected dynamically during operation, to optimize one or more performance characteristics.

    摘要翻译： 描述了在网络的正常操作期间在任何给定时间选择用于数据通信的无线网络的最佳信道的方法和装置。 网络可以是IEEE标准的802.11兼容网络。 频道扫描可以在诸如接入点（AP）或移动台之类的无线网络上的任何站中执行，或者两者。 信道扫描可以在数据通信空闲时间期间执行，或者与网络上的数据通信同时进行。 该技术可以在多输入多输出（MIMO）通信系统中实现，其中可以在操作期间动态地选择用于信道扫描的天线或天线，以优化一个或多个性能特征。

    Message routing in wireless mesh networks
    4.
    发明授权
    Message routing in wireless mesh networks 有权
    无线网状网络中的消息路由

    公开(公告)号：US08634434B2

    公开(公告)日：2014-01-21

    申请号：US12939023

    申请日：2010-11-03

    申请人： Sam Heidari ,  Sigurd Schelstraete ,  Ravi Narasimhan ,  Andrea Goldsmith

    发明人： Sam Heidari ,  Sigurd Schelstraete ,  Ravi Narasimhan ,  Andrea Goldsmith

    IPC分类号： H04L12/43

    CPC分类号： H04W40/06

    摘要： Disclosed are methods and apparatuses related to the routing of communications in a wireless mesh network so as to provide improved range, reliability and/or throughput. At least some aspects of the techniques and apparatuses can be implemented in an intermediary node (relay node) on a wireless mesh network. The relay node and other devices on the wireless network may implement a form of multiple-input multiple-output (MIMO) communication, such as multi-user MIMO (MU-MIMO). The devices on the network can communicate in accordance with IEEE standard 802.11.

    摘要翻译： 公开了与无线网状网络中的通信路由相关的方法和装置，以便提供改进的范围，可靠性和/或吞吐量。 技术和装置的至少一些方面可以在无线网状网络上的中间节点（中继节点）中实现。 中继节点和无线网络上的其他设备可以实现诸如多用户MIMO（MU-MIMO）的多输入多输出（MIMO）通信的形式。 网络上的设备可以根据IEEE标准802.11进行通信。

    MESSAGE ROUTING IN WIRELESS MESH NETWORKS
    5.
    发明申请
    MESSAGE ROUTING IN WIRELESS MESH NETWORKS 有权
    无线网路中的消息路由

    公开(公告)号：US20110110345A1

    公开(公告)日：2011-05-12

    申请号：US12939023

    申请日：2010-11-03

    申请人： Sam Heidari ,  Sigurd Schelstraete ,  Ravi Narasimhan ,  Andrea Goldsmith

    发明人： Sam Heidari ,  Sigurd Schelstraete ,  Ravi Narasimhan ,  Andrea Goldsmith

    IPC分类号： H04W40/00

    CPC分类号： H04W40/06

    摘要： Disclosed are methods and apparatuses related to the routing of communications in a wireless mesh network so as to provide improved range, reliability and/or throughput. At least some aspects of the techniques and apparatuses can be implemented in an intermediary node (relay node) on a wireless mesh network. The relay node and other devices on the wireless network may implement a form of multiple-input multiple-output (MIMO) communication, such as multi-user MIMO (MU-MIMO). The devices on the network can communicate in accordance with IEEE standard 802.11.

    摘要翻译： 公开了与无线网状网络中的通信路由相关的方法和装置，以便提供改进的范围，可靠性和/或吞吐量。 技术和装置的至少一些方面可以在无线网状网络上的中间节点（中继节点）中实现。 中继节点和无线网络上的其他设备可以实现诸如多用户MIMO（MU-MIMO）的多输入多输出（MIMO）通信的形式。 网络上的设备可以根据IEEE标准802.11进行通信。

    CHANNEL SCANNING AND CHANNEL SELECTION IN A WIRELESS COMMUNICATION NETWORK
    6.
    发明申请
    CHANNEL SCANNING AND CHANNEL SELECTION IN A WIRELESS COMMUNICATION NETWORK 有权
    无线通信网络中的频道扫描和频道选择

    公开(公告)号：US20110096739A1

    公开(公告)日：2011-04-28

    申请号：US12913200

    申请日：2010-10-27

    申请人： Sam Heidari ,  Kapil Gulati ,  Ali Rouhi ,  Ravi Narasimhan ,  Rajkumar Samuel

    发明人： Sam Heidari ,  Kapil Gulati ,  Ali Rouhi ,  Ravi Narasimhan ,  Rajkumar Samuel

    IPC分类号： H04W72/04

    CPC分类号： H04W72/085 ,  H04W36/06 ,  H04W48/16

    摘要： A method and apparatus to select the best channel of a wireless network for data communication at any given time, during normal operation of the network, is described. The network may be an IEEE standard 802.11 compliant network. Channel scanning may be performed in any station on the wireless network, such as an access point (AP) or a mobile station, or both. Channel scanning may be performed during data communication idle time, or simultaneously with data communication on the network. The technique can be implemented in a multiple-input multiple-output (MIMO) communication system, where the antenna or antennas used for channel scanning can be selected dynamically during operation, to optimize one or more performance characteristics.

    摘要翻译： 描述了在网络的正常操作期间在任何给定时间选择用于数据通信的无线网络的最佳信道的方法和装置。 网络可以是IEEE标准的802.11兼容网络。 频道扫描可以在诸如接入点（AP）或移动台之类的无线网络上的任何站中执行，或者两者。 信道扫描可以在数据通信空闲时间期间执行，或者与网络上的数据通信同时进行。 该技术可以在多输入多输出（MIMO）通信系统中实现，其中可以在操作期间动态地选择用于信道扫描的天线或天线，以优化一个或多个性能特征。

    Method and apparatus for DSL communication over a 4 wire system
    7.
    发明授权
    Method and apparatus for DSL communication over a 4 wire system 失效
    用于通过4线系统进行DSL通信的方法和装置

    公开(公告)号：US08514917B1

    公开(公告)日：2013-08-20

    申请号：US12661243

    申请日：2010-03-12

    申请人： Sam Heidari ,  Qasem Aldrubi ,  Felipe Fuks ,  Hossein Dehghan-Fard

    发明人： Sam Heidari ,  Qasem Aldrubi ,  Felipe Fuks ,  Hossein Dehghan-Fard

    IPC分类号： H04L5/16

    CPC分类号： H04L5/16 ,  H04B3/32 ,  H04M11/062

    摘要： A digital subscriber line ‘XDSL’ communication system for provisioning multi-tone modulated communications over two subscriber lines with two modems. The first modem has shared and discrete components forming a transmit path coupled exclusively to an end of a first of the two subscriber lines and a receive path coupled exclusively to an end of a second of the two subscriber lines. The second modem also has shared and discrete components forming a transmit path and a receive path having couplings of transmit and receive path components to corresponding opposing ends of the two subscriber lines diametrically opposite to those of the first modem, whereby the modems provision the first subscriber line exclusively for unidirectional communication from the first to the second modem, and provision the second subscriber line for unidirectional communication in the opposite direction, specifically from the second modem to the first modem. A related method and modem are disclosed.

    摘要翻译： 一种用于通过具有两个调制解调器的两个用户线路提供多音调调制通信的数字用户线“XDSL”通信系统。 第一调制解调器具有形成专用于两个用户线中的第一个的一端的发送路径的共享和离散组件，以及专用于两条用户线中的第二个用户线的一端的接收路径。 第二调制解调器还具有形成传输路径的共享和离散组件以及具有发射和接收路径组件的耦合的接收路径到与第一调制解调器的两个用户线的直径相反的两个用户线的对应端的接收路径，由此调制解调器提供第一订户 专用于从第一调制解调器到第二调制解调器的单向通信，并且将第二用户线路在相反方向，特别是从第二调制解调器提供给第一调制解调器的单向通信。 公开了一种相关方法和调制解调器。

    Method and apparatus for DSL line card power management
    8.
    发明授权
    Method and apparatus for DSL line card power management 有权
    DSL线卡电源管理的方法和装置

    公开(公告)号：US08345859B2

    公开(公告)日：2013-01-01

    申请号：US12009196

    申请日：2008-01-16

    申请人： Sam Heidari ,  Sigurd Schelstraete ,  Aner Tennen ,  Elango Pakriswamy ,  Chun-Sup Kim ,  Luiz Felipe Fuks

    发明人： Sam Heidari ,  Sigurd Schelstraete ,  Aner Tennen ,  Elango Pakriswamy ,  Chun-Sup Kim ,  Luiz Felipe Fuks

    IPC分类号： H04M1/00 ,  H04M9/00 ,  H04M7/00

    CPC分类号： H04M11/062

    摘要： A XDSL line card including an allocator for allocating power to the multi-tone modulated communications on each of the subscriber lines, and for selecting control parameters sufficient to effect communications on each of the subscriber lines at a power level proximate to an allocated power level therefore. The line card also includes configurable components coupled to one another to form a transmit path and a receive path to couple to the digital subscriber lines. The configurable components are responsive to the control parameters selected by the allocator to initialize multi-tone communications over each of the plurality of subscriber lines at a power level proximate the allocated power level.

    摘要翻译： 一种XDSL线路卡，包括用于为每个用户线路上的多音调调制通信分配功率的分配器，并且用于选择足以在接近分配的功率电平的功率电平上在每个用户线上进行通信的控制参数 。 线卡还包括彼此耦合的可配置组件以形成发送路径和接收到数字用户线路的接收路径。 可配置组件响应于由分配器选择的控制参数，以在接近分配的功率电平的功率电平上初始化多个用户线中的每一个上的多音通信。

    Method and apparatus for differentiated communication channel robustness in a multi-tone transceiver
    9.
    发明申请
    Method and apparatus for differentiated communication channel robustness in a multi-tone transceiver 有权
    用于多音调收发器中差分通信信道鲁棒性的方法和装置

    公开(公告)号：US20080069193A1

    公开(公告)日：2008-03-20

    申请号：US11901346

    申请日：2007-09-15

    申请人： Avadhani Shridhar ,  Sam Heidari ,  Rouben Toumani ,  Ying Wu

    发明人： Avadhani Shridhar ,  Sam Heidari ,  Rouben Toumani ,  Ying Wu

    IPC分类号： H04B1/38

    CPC分类号： H04L5/006 ,  H04L5/0042 ,  H04L5/0046

    摘要： A multi-tone transceiver including: a channel controller and a plurality of components forming a transmit path and a receive path. The channel controller configured to determine bit-loading for each successive symbol or tone set based on a 1st noise margin target for a first subset of tones in each tone set dedicated to transport of a robust communications channel (RCC) and based on a 2nd noise margin target less than the 1st noise margin target for remaining tones in each tone set dedicated to a standard communications channel (SCC). The plurality of components forming the transmit and receive paths are responsive to the channel controller to select for data modulated on a given tone at least one of smaller constellations and higher gain scaling levels when the given tone corresponds to an RCC tone as compared to an SCC tone, whereby the first set of tones dedicated to the RCC exhibit greater immunity to noise variations than the remaining tones dedicated to the SCC.

    摘要翻译： 一种多音调收发器，包括：信道控制器和形成发送路径和接收路径的多个组件。 信道控制器，被配置为基于专用于传输鲁棒通信信道的每个音调集合中的第一音调子集，确定每个连续符号或音调集合的比特加载（...） RCC），并且基于小于专用于标准通信信道（SCC）的每个音调集合中的剩余音调的小于噪声余量目标的2 nd nd噪声容限目标。 形成发送和接收路径的多个组件响应于信道控制器，以便在给定音调对应于RCC音调与SCC相比时，为给定音调调制的数据中的至少一个较小星座和较高增益缩放级别 音调，由此专用于RCC的第一组音调比专用于SCC的剩余音调具有更大的对噪声变化的抗扰度。

    Method and apparatus for initializing modem communications
    10.
    发明授权
    Method and apparatus for initializing modem communications 失效
    用于初始化调制解调器通信的方法和装置

    公开(公告)号：US07035326B1

    公开(公告)日：2006-04-25

    申请号：US10071536

    申请日：2002-02-08

    申请人： Sam Heidari ,  Mazen M. Shihabi ,  Saman Behtash ,  Hojat Khelghati ,  John Gevargiz ,  Avadhani Sridhar ,  Fernando Ramirez-Mireles

    发明人： Sam Heidari ,  Mazen M. Shihabi ,  Saman Behtash ,  Hojat Khelghati ,  John Gevargiz ,  Avadhani Sridhar ,  Fernando Ramirez-Mireles

    IPC分类号： H03H7/40 ,  H04B1/38

    CPC分类号： H04L5/0046 ,  H04L5/1438

    摘要： The present invention provides a method and apparatus for demodulating data received over a communication medium carrying a transmission having multiple pilot tones with pilot data modulated thereon and message tones with message data modulated thereon and with the pilot tones and message tones frequency division multiplexed with respect to one another. In an embodiment of the invention the communication protocol utilized for modulation and demodulation is discrete multi tone (DMT). The invention allows message processing and equalizer training to proceed in parallel before equalizer training tables have been completed thus reducing the time associated with modem initialization. The apparatus in one embodiment of the invention includes on the receive path of a DMT or other multi-tone modem, a fast Fourier transform engine (FFT), a message processor, and a decoder. The FFT converts the received data from a time domain to a frequency domain. The received data in the frequency domain includes successive sets of pilot tones together with message tones. The message processor selects pairs of message and pilot tones proximate to one another in the frequency domain in each set of pilot tones and message tones. The message tone in each pair is then equalized with the pilot tone in the pair to substantially remove frequency dependent phase shifts imparted by the communication medium to the message tone. The equalized message tone is then decoded in the decoder to the corresponding specific set of message data which it represents.

    摘要翻译： 本发明提供一种方法和装置，用于解调在载有具有调制其上的导频数据的多个导频音调的传输的通信媒体上接收的数据，以及在其上调制了消息数据的消息音，并且相对于 另一个。 在本发明的实施例中，用于调制和解调的通信协议是离散多音（DMT）。 本发明允许消息处理和均衡器训练在均衡器训练表已经完成之前并行进行，从而减少与调制解调器初始化相关联的时间。 本发明的一个实施例中的装置包括在DMT或其他多音调制解调器的接收路径上，快速傅里叶变换引擎（FFT），消息处理器和解码器。 FFT将接收的数据从时域转换为频域。 频域中接收到的数据包括连续的导频音集以及消息音。 消息处理器在每组导频音和消息音中在频域中选择彼此接近的消息和导频音对。 然后，每对中的消息音调与该对中的导频音调相等，以基本上消除由通信媒体向消息音色赋予的频率相关相移。 然后，均衡消息音在解码器中被解码为它所表示的对应的特定消息数据组。