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    • 41. 发明授权
    • Multi-hop communications in a wireless network
    • 无线网络中的多跳通信
    • US08019351B2
    • 2011-09-13
    • US12401591
    • 2009-03-10
    • Sanjiv NandaRanganathan Krishnan
    • Sanjiv NandaRanganathan Krishnan
    • H04W72/00
    • H04W72/1226H04W52/367H04W52/46H04W84/18
    • 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.
    • 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。
    • 43. 发明授权
    • Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation
    • 利用多载波调制的多天线通信系统的传输方案
    • US07606326B2
    • 2009-10-20
    • US11501130
    • 2006-08-07
    • Ranganathan KrishnanAnand D. SubramaniamTamer Kadous
    • Ranganathan KrishnanAnand D. SubramaniamTamer Kadous
    • H04B7/06H04B7/02
    • H04W52/42H04B7/0667H04L5/0023H04L5/0048
    • Pilot and data transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation are provided. Subband multiplexing is used to avoid interference resulting from transmitting multiple signals simultaneously from multiple antennas. M usable subbands are initially arranged to form multiple groups of subbands, with each group including a different subset of the usable subbands. Each of T transmit antennas is then assigned one or possibly more subband groups for pilot transmission and typically one subband group for data transmission. Pilot and data may then be transmitted from each antenna on the subbands assigned to that antenna for pilot and data transmission. For each transmit antenna, the transmit power for each assigned subband may be scaled higher such that all of the total transmit power available for the antenna is used for transmission. Pilot and/or data may be transmitted simultaneously from all T antennas on all usable subbands without causing mutual interference.
    • 提供了利用多载波调制的多天线通信系统的导频和数据传输方案。 使用子带复用来避免从多个天线同时发送多个信号导致的干扰。 M个可用的子带最初被布置成形成多个子带组,每组包括可用子带的不同子集。 然后,每个T发射天线被分配一个或可能更多的子带组用于导频传输,并且通常用于数据传输的一个子带组。 然后可以从分配给该天线的子带上的每个天线发送导频和数据用于导频和数据传输。 对于每个发射天线,每个分配的子带的发射功率可以被缩放更高,使得可用于天线的全部发射功率被用于传输。 导频和/或数据可以在所有可用子带上从所有T个天线同时传输而不引起相互干扰。
    • 44. 发明申请
    • MULTI-HOP COMMUNICATIONS IN A WIRELESS NETWORK
    • 无线网络中的多通信通信
    • US20090201907A1
    • 2009-08-13
    • US12401591
    • 2009-03-10
    • Sanjiv NandaRanganathan Krishnan
    • Sanjiv NandaRanganathan Krishnan
    • H04J3/00
    • H04W72/1226H04W52/367H04W52/46H04W84/18
    • 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.
    • 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。
    • 47. 发明申请
    • WIRELESS ARCHITECTURE FOR A TRADITIONAL WIRE-BASED PROTOCOL
    • 基于传统电路协议的无线架构
    • US20080045149A1
    • 2008-02-21
    • US11624634
    • 2007-01-18
    • Dinesh DharmarajuRanganathan KrishnanLauren KwanKit Leung
    • Dinesh DharmarajuRanganathan KrishnanLauren KwanKit Leung
    • H04B7/24
    • G09G5/006G06F3/14
    • 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.
    • 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。
    • 50. 发明申请
    • System and method of instant messaging between wireless devices
    • 无线设备之间即时通讯的系统和方法
    • US20070203986A1
    • 2007-08-30
    • US11361260
    • 2006-02-24
    • Ranganathan Krishnan
    • Ranganathan Krishnan
    • G06F15/16G06F15/173
    • H04L67/04H04L43/00H04L51/04H04L51/38H04L67/24H04W80/12
    • 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.
    • 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。