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11. 发明授权

US07039001B2 Channel estimation for OFDM communication systems 有权
标题翻译： OFDM通信系统的信道估计
公开(公告)号：US07039001B2
公开(公告)日：2006-05-02
申请号：US10340130
申请日：2003-01-10
申请人： Ranganathan Krishnan , Tamer Kadous
发明人： Ranganathan Krishnan , Tamer Kadous
IPC分类号： H04J11/00
CPC分类号： H04W52/325 , H04L25/0212 , H04L25/022 , H04L25/023 , H04W52/24 , H04W52/34 , H04W52/42
摘要： Techniques to estimate the frequency response of a wireless channel in an OFDM system. In one method, an initial estimate of the frequency response of the wireless channel is obtained for a first group of subbands based on a pilot transmission received via the subbands in the first group. An estimate of the impulse response of the wireless channel is then derived based on the initial frequency response estimate. An enhanced estimate of the frequency response of the wireless channel is then derived for a second group of subbands based on the impulse response estimate. The first and second groups may each include all or only a subset of the usable subbands. Subband multiplexing may be used to allow simultaneous pilot transmissions by multiple terminals on their associated groups of subbands.
摘要翻译：估计OFDM系统中无线信道的频率响应的技术。在一种方法中，基于经由第一组中的子带接收的导频传输，针对第一组子带获得无线信道的频率响应的初始估计。然后基于初始频率响应估计推导出无线信道的脉冲响应的估计。然后基于脉冲响应估计对第二组子带导出对无线信道的频率响应的增强估计。第一组和第二组可以各自包括全部或仅一个可用子带的子集。子带复用可用于允许在其相关联的子带组上的多个终端的同时导频传输。

12. 发明申请

US20050170783A1 Channel estimation for OFDM communication systems 有权
标题翻译： OFDM通信系统的信道估计
公开(公告)号：US20050170783A1
公开(公告)日：2005-08-04
申请号：US11101908
申请日：2005-04-07
申请人： Ranganathan Krishnan , Tamer Kadous
发明人： Ranganathan Krishnan , Tamer Kadous
IPC分类号： H04B7/005 , H04B17/00 , H04L25/02 , H04W52/24 , H04W52/32 , H04W52/34 , H04W52/42 , H03D1/00 , H04L27/06
CPC分类号： H04W52/325 , H04L25/0212 , H04L25/022 , H04L25/023 , H04W52/24 , H04W52/34 , H04W52/42
摘要： Techniques to estimate the frequency response of a wireless channel in an OFDM system. In one method, an initial estimate of the frequency response of the wireless channel is obtained for a first group of subbands based on a pilot transmission received via the subbands in the first group. An estimate of the impulse response of the wireless channel is then derived based on the initial frequency response estimate. An enhanced estimate of the frequency response of the wireless channel is then derived for a second group of subbands based on the impulse response estimate. The first and second groups may each include all or only a subset of the usable subbands. Subband multiplexing may be used to allow simultaneous pilot transmissions by multiple terminals on their associated groups of subbands.
摘要翻译：估计OFDM系统中无线信道的频率响应的技术。在一种方法中，基于经由第一组中的子带接收的导频传输，针对第一组子带获得无线信道的频率响应的初始估计。然后基于初始频率响应估计推导出无线信道的脉冲响应的估计。然后基于脉冲响应估计对第二组子带导出对无线信道的频率响应的增强估计。第一组和第二组可以各自包括全部或仅一个可用子带的子集。子带复用可用于允许在其相关联的子带组上的多个终端的同时导频传输。

13. 发明授权

US09198084B2 Wireless architecture for a traditional wire-based protocol 有权
标题翻译：用于传统线性协议的无线架构
公开(公告)号：US09198084B2
公开(公告)日：2015-11-24
申请号：US11624642
申请日：2007-01-18
申请人： Dinesh Dharmaraju , Ranganathan Krishnan , Lauren KwanKit Leung
发明人： Dinesh Dharmaraju , Ranganathan Krishnan , Lauren KwanKit Leung
IPC分类号： H04M11/00 , H04J1/16 , H04W28/22
CPC分类号： H04W28/22
摘要： Embodiments are described in connection with transferring data traditionally communicated through a wired link over a high-speed wireless link. The disclosed embodiments provide the wired and/or wireless data communication with minimal changes on the existing wired architecture. According to an embodiment is an apparatus for communicating wirelessly over a traditional wired link. The apparatus includes a transmitter comprising a host and a first portion of a client connected by a wired link and a receiver comprising a second portion of the client. According to some embodiments, the apparatus can include a query module that determines an operation rate based in part on a rate supported by a medium access control and a retransmission statistic and an assigner module that assigns a communication to a wired protocol or a wireless protocol.
摘要翻译：结合传送通过有线链路通过高速无线链路传送的数据来描述实施例。所公开的实施例在有线和/或无线数据通信中提供现有有线架构的最小变化。根据一个实施例是一种用于通过传统有线链路无线通信的装置。该装置包括发射机，其包括由有线链路连接的主机和客户端的第一部分，以及包括客户端的第二部分的接收机。根据一些实施例，该装置可以包括查询模块，该查询模块部分地基于由媒体访问控制和重发统计信息支持的速率以及向有线协议或无线协议分配通信的分配器模块来确定操作速率。

14. 发明授权

US08351985B2 Low power dual processor architecture for multi mode devices 有权
标题翻译：用于多模式设备的低功耗双处理器架构
公开(公告)号：US08351985B2
公开(公告)日：2013-01-08
申请号：US13354377
申请日：2012-01-20
申请人： Ranganathan Krishnan , Albert S. Ludwin , William R. Gardner
发明人： Ranganathan Krishnan , Albert S. Ludwin , William R. Gardner
IPC分类号： H04B1/38 , H04W52/02
CPC分类号： G06F1/3203 , G06F1/3293 , H04W52/028 , H04W52/0287 , Y02D10/122 , Y02D70/1222 , Y02D70/1242
摘要： A mobile computing device with multiple modes, for example, wireless communication and personal computing, has an application processor and a communication processor. In the computing mode, the application processor is the master processor. In the communication mode, the application processor is deenergized to conserve battery power, with the communication processor functioning as the master processor by accessing the device's peripheral bus using the memory interface of the communication processor.
摘要翻译：具有多种模式（例如无线通信和个人计算）的移动计算设备具有应用处理器和通信处理器。在计算模式下，应用处理器是主处理器。在通信模式下，应用处理器被断电以节省电池电力，通信处理器通过使用通信处理器的存储器接口访问设备的外围总线而用作主处理器。

15. 发明授权

US08028024B2 System and method of instant messaging between wireless devices 有权
标题翻译：无线设备之间即时通讯的系统和方法
公开(公告)号：US08028024B2
公开(公告)日：2011-09-27
申请号：US11361260
申请日：2006-02-24
申请人： Ranganathan Krishnan
发明人： Ranganathan Krishnan
IPC分类号： G06F15/16 , H04M3/00
CPC分类号： H04L67/04 , H04L43/00 , H04L51/04 , H04L51/38 , H04L67/24 , H04W80/12
摘要： A system and method of instant messaging is disclosed and includes transmitting an indication from a wireless device to an instant messaging server that instant messaging is enabled at the wireless device. Further, a plurality of communication signals between the wireless device and a plurality of base stations are monitored. After determining that the wireless device has one remaining communication signal with one base station, the one remaining communication signal is monitored. Moreover, a time history of signal strength data for the one remaining communication signal is recorded and a slope of the signal strength data is determined. Based on the slope of the signal strength data, it can be determined whether an imminent loss of signal is about to occur at the wireless device.
摘要翻译：公开了一种即时消息收发系统和方法，包括从无线设备向无线设备发送即时消息收发的即时消息收发服务器的指示。此外，监视无线装置与多个基站之间的多个通信信号。在确定无线设备与一个基站之间具有一个剩余通信信号之后，监视一个剩余的通信信号。此外，记录一个剩余通信信号的信号强度数据的时间历史，并确定信号强度数据的斜率。基于信号强度数据的斜率，可以确定无线设备即将发生即将发生的信号丢失。

16. 发明授权

US07907898B2 Asynchronous inter-piconet routing 有权
标题翻译：异步微微网路由
公开(公告)号：US07907898B2
公开(公告)日：2011-03-15
申请号：US10809996
申请日：2004-03-26
申请人： Ranganathan Krishnan , Sanjiv Nanda
发明人： Ranganathan Krishnan , Sanjiv Nanda
IPC分类号： H04B7/00
CPC分类号： H04W92/18 , H04W40/00 , H04W40/32 , H04W48/16 , H04W76/10 , H04W84/18 , H04W92/02
摘要： Systems and techniques are disclosed relating to wireless communications. The systems and techniques involve wireless communications wherein a process, module or communications terminal is capable of engaging in intra-piconet communications. The process, module or communications terminal may also be used to detect a pilot signal from a foreign terminal, and establish a peer-to-peer connection with the foreign terminal to support communications if the pilot signal is below a threshold.
摘要翻译：公开了与无线通信有关的系统和技术。该系统和技术涉及无线通信，其中过程，模块或通信终端能够参与微网内通信。过程，模块或通信终端也可以用于检测来自外部终端的导频信号，并且如果导频信号低于阈值，则与外部终端建立对等连接以支持通信。

17. 发明授权

US07852799B2 Network using randomized time division duplexing 有权
标题翻译：网络使用随机时分双工
公开(公告)号：US07852799B2
公开(公告)日：2010-12-14
申请号：US10762116
申请日：2004-01-20
申请人： Sanjiv Nanda , Ranganathan Krishnan
发明人： Sanjiv Nanda , Ranganathan Krishnan
IPC分类号： H04B7/216
CPC分类号： H04W56/0085 , H04L45/02 , H04W74/00
摘要： A network node may have a transmitter, a receiver and a controller. The controller may be configured to automatically and repeatedly cause the network node to cycle back and forth between transmitting information on a network with the transmitter and receiving information with the receiver from the network, wherein the lengths of at least some of the transmissions and receptions vary in accordance with a predetermined pattern.
摘要翻译：网络节点可以具有发射机，接收机和控制器。控制器可以被配置为自动地和重复地使得网络节点在网络上与发射机之间发送信息和从网络接收信息之间来回循环，其中传输和接收中的至少一些的长度变化根据预定图案。

18. 发明授权

US07664140B2 Early termination of low data rate traffic in a wireless network 失效
标题翻译：提前终止无线网络中的低数据速率流量
公开(公告)号：US07664140B2
公开(公告)日：2010-02-16
申请号：US10794259
申请日：2004-03-04
申请人： Amol Rajkotia , Ranganathan Krishnan , Joseph Patrick Burke
发明人： Amol Rajkotia , Ranganathan Krishnan , Joseph Patrick Burke
IPC分类号： H04J3/24 , H04J3/16 , H04J3/22
CPC分类号： H04L1/0083 , G03G5/0514 , G03G5/0517 , G03G5/0521 , H04L1/0001 , H04L1/1621
摘要： Systems and techniques are disclosed relating to wireless communications, and more specifically, to various systems and techniques for early termination of low rate traffic in a wireless network. A physical layer packet (PLP) grouping factor K configures the PLP into K groups and an ACK/NAK is received on each group.
摘要翻译：公开了与无线通信相关的系统和技术，更具体地，涉及用于在无线网络中提前终止低速业务的各种系统和技术。物理层分组（PLP）分组因子K将PLP配置为K组，并且在每个组上接收到ACK / NAK。

19. 发明授权

US07519371B2 Multi-hop communications in a wireless network 有权
标题翻译：无线网络中的多跳通信
公开(公告)号：US07519371B2
公开(公告)日：2009-04-14
申请号：US10775971
申请日：2004-02-09
申请人： Sanjiv Nanda , Ranganathan Krishnan
发明人： Sanjiv Nanda , Ranganathan Krishnan
IPC分类号： H04Q7/20
CPC分类号： H04W72/1226 , H04W52/367 , H04W52/46 , H04W84/18
摘要： Systems and techniques are disclosed relating to wireless communications. The systems and techniques involve wireless communications wherein a module or communications device is configured to select first and second terminal pairs, the first terminal pair having a first transmitting terminal and a first receiving terminal, and the second terminal pair having a second transmitting terminal and a second receiving terminal, schedule a first signal transmission from the first transmitting terminal to an intermediate terminal, the first signal transmission being destined for the first receiving terminal, schedule, simultaneously with the first signal transmission, a second signal transmission from the second transmitting terminal to the second receiving terminal, and schedule a power level for each of the first and second signal transmissions that satisfies a target quality parameter for each of the intermediate terminal and the second receiving terminal.
摘要翻译：公开了与无线通信有关的系统和技术。该系统和技术涉及无线通信，其中模块或通信设备被配置为选择第一和第二终端对，第一终端对具有第一发送终端和第一接收终端，并且第二终端对具有第二发送终端和第二接收终端，调度从第一发送终端到中间终端的第一信号传输，第一信号传输指定给第一接收终端，与第一信号传输同时调度从第二发射终端到第二信号传输的第二信号传输第二接收终端，并为每个中间终端和第二接收终端分别满足目标质量参数的第一和第二信号传输中的每一个调度功率电平。

20. 发明授权

US07515595B2 Network using encoded transmissions and forwarding 有权
标题翻译：网络使用编码传输和转发
公开(公告)号：US07515595B2
公开(公告)日：2009-04-07
申请号：US10754246
申请日：2004-01-09
申请人： Sanjiv Nanda , Ranganathan Krishnan
发明人： Sanjiv Nanda , Ranganathan Krishnan
IPC分类号： H04L12/28
CPC分类号： H04W88/04 , H04B1/707 , H04B1/7163 , H04L45/00 , H04L45/22 , H04L45/28 , H04W40/02
摘要： A first network node may include a wireless transmitter, a wireless receiver, a user interface and a controller. The controller may be configured to cause information that is received by the receiver to be delivered to the user interface, if that information is encoded to be delivered to the user interface of the network node. The controller may also be configured to cause information to be transmitted in a format encoded for a first target node by the transmitter, if that information is encoded to be forwarded by the network node. The controller may also be configured to cause information from the user interface to be transmitted in a format encoded for a second target node by the transmitter. Related processes are also disclosed.
摘要翻译：第一网络节点可以包括无线发射机，无线接收机，用户接口和控制器。如果该信息被编码以传送到网络节点的用户界面，则控制器可以被配置为使得由接收者接收的信息被传递到用户接口。控制器还可以被配置为如果该信息被编码以由网络节点转发，则使得以由发射机为第一目标节点编码的格式发送信息。控制器还可以被配置为使得来自用户界面的信息以由发射机为第二目标节点编码的格式被发送。还公开了相关过程。

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