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    • 22. 发明授权
    • Method and system for antenna and radio front-end topologies for a system-on-a-chip (SOC) device that combines bluetooth and IEEE 802.11 b/g WLAN technologies
    • 用于组合蓝牙和IEEE 802.11 b / g WLAN技术的片上系统(SOC)设备的天线和无线电前端拓扑的方法和系统
    • US09059782B2
    • 2015-06-16
    • US11387340
    • 2006-03-23
    • Prasanna DesaiBrima Ibrahim
    • Prasanna DesaiBrima Ibrahim
    • H04B7/00H04B1/403H04W88/06
    • H04W72/1215H04B1/406H04W4/80H04W84/12H04W88/06
    • Certain embodiments of the invention may be found in a method and system for antenna and radio front-end topologies for a system-on-a-chip (SOC) device that combines Bluetooth and IEEE 802.11 b/g WLAN technologies. A single chip radio device that supports WLAN and Bluetooth technologies receives a WLAN signal in a WLAN processing circuitry of the radio front-end and in a Bluetooth processing circuitry of the radio front-end. Signals generated by the WLAN processing circuitry and the Bluetooth processing circuitry from the received WLAN signal may be combined in a diversity combiner that utilizes selection diversity gain combining or maximal ratio combining (MRC). When a generated signal is below a threshold value, the signal may be dropped from the combining operation. A single antenna usage model may be utilized with the single chip radio device front-end topology to support WLAN and Bluetooth communications.
    • 本发明的某些实施例可以在组合蓝牙和IEEE 802.11b / g WLAN技术的用于片上系统(SOC)设备的天线和无线电前端拓扑的方法和系统中找到。 支持WLAN和蓝牙技术的单芯片无线电设备在无线电前端的WLAN处理电路和无线电前端的蓝牙处理电路中接收WLAN信号。 由WLAN处理电路和蓝牙处理电路从接收到的WLAN信号生成的信号可以组合在利用选择分集增益组合或最大比组合(MRC)的分集组合器中。 当生成的信号低于阈值时,可以从组合操作中丢弃该信号。 单个天线使用模型可以与单芯片无线电设备前端拓扑结合使用以支持WLAN和蓝牙通信。
    • 24. 发明授权
    • Collaborative coexistence of co-located mobile WiMAX, wireless LAN, and/or bluetooth radios
    • 共同移动WiMAX,无线局域网和/或蓝牙无线电的协同共存
    • US08526348B2
    • 2013-09-03
    • US13310744
    • 2011-12-03
    • Prasanna Desai
    • Prasanna Desai
    • G08C17/00
    • H04W52/0229H04W16/14H04W52/0225H04W88/06Y02D70/1224Y02D70/1244Y02D70/1246Y02D70/142Y02D70/144Y02D70/146Y02D70/162Y02D70/166
    • Collaborative coexistence of co-located mobile WiMAX, wireless LAN, and/or Bluetooth radios. Within a communication device that includes multi-protocol communication capability, the various radio modules included within such a communication device operate cooperatively such that collisions are avoided between those various radios. When a first of the radio modules operates as governed by a relatively rigid frame structure, a second of the radio modules capitalizes upon that predetermined nature (of the relatively rigid frame structure) to support communication during times in which that first radio module has a lower level of activity (e.g., turned off completely, within a power savings mode, in a sleep mode, etc.). The radio module operation is performed within a time-orthogonal manner, such that multiple radio modules are not attempting to transmit or receive simultaneously. Moreover, CTS2SELF operation can be employed alone or in conjunction with power savings operation of co-located radios within a communication device.
    • 共同移动WiMAX,无线局域网和/或蓝牙无线电的协同共存。 在包括多协议通信能力的通信设备中,包括在这种通信设备内的各种无线电模块协作地进行操作,以避免这些各种无线电之间的冲突。 当无线电模块中的第一个由相对刚性的帧结构来操作时,第二个无线电模块利用该预定特性(相对刚性的帧结构)来支持在该第一无线电模块具有较低的 活动水平(例如,在省电模式下,睡眠模式下等)完全关闭。 以时间正交的方式执行无线电模块操作,使得多个无线电模块不尝试同时发送或接收。 此外,CTS2SELF操作可以单独使用或与通信设备内的同位置无线电的功率节省操作结合使用。
    • 25. 发明申请
    • Direct detection of wireless interferers in a communication device for multiple modulation types
    • 在多种调制类型的通信设备中直接检测无线干扰源
    • US20120294396A1
    • 2012-11-22
    • US13555296
    • 2012-07-23
    • Prasanna Desai
    • Prasanna Desai
    • H04B1/10H04W88/06
    • H04B1/1027H04L5/0062
    • Direct detection of wireless interferers in a communication device for multiple modulation types. One or more radios implemented within a communication device is/are operative to receive and process wireless communications. A wireless communication signal is processed to extract symbols there from. Various symbols groups are processed in accordance with correlation processing to identify potential interferers (e.g., other communication devices using common portions of frequency spectra). Alternatively, matched filter processing (e.g., using a Barker matched filter in some embodiments) operates on the various symbol groups to identify some potential interferers. Various combinations of correlation processing and matched filter processing may be employed in other instances (e.g., using any of a desired means of comparison, combining, etc.) in considering interferers identified in accordance with each of these two means. Also, re-identification and re-characterization of possible interferers may be performed subsequently to remove or re-admit frequency spectra for use in communications.
    • 在多种调制类型的通信设备中直接检测无线干扰源。 在通信设备内实现的一个或多个无线电装置可操作以接收和处理无线通信。 处理无线通信信号以从中提取符号。 根据相关处理来处理各种符号组,以识别潜在的干扰源(例如,使用频谱的公共部分的其他通信设备)。 或者,匹配滤波处理(例如,在一些实施例中使用巴克匹配滤波器)对各种符号组进行操作以识别一些潜在的干扰源。 在其他情况下可以采用相关处理和匹配滤波处理的各种组合(例如,使用任何所需的比较方法,组合等)来考虑根据这两种装置中的每一种识别的干扰源。 此外,可以随后执行可能的干扰源的重新识别和重新表征以去除或重新接收用于通信的频谱。
    • 28. 发明授权
    • Method and system for dynamic selection of a coexistence method and transmit power level based on calibration data
    • 基于校准数据动态选择共存方法和传输功率电平的方法和系统
    • US08200161B2
    • 2012-06-12
    • US12428085
    • 2009-04-22
    • John WalleyPrasanna Desai
    • John WalleyPrasanna Desai
    • H04B1/00
    • H04W52/265G01S19/21H04B1/1027H04B7/06H04W24/00H04W28/18H04W52/346H04W72/00H04W88/06
    • Aspects of the invention may comprise calibrating operations of wireless transmitters and/or receivers in a communication device to mitigate interference caused during concurrent communications via the wireless interfaces in the communication device. Calibration may be performed dynamically, and may comprise managing system parameters and/or physical resources of the communication device and/or the wireless transmitters and/or receivers; managing characteristics of wireless communication performed via the wireless transmitters and/or receivers; and/or managing isolation between two or more of said plurality of wireless transmitters and/or receivers in said communication device. The calibration may be performed based on data generated, via the wireless transmitters and/or receivers, during active and/or idle phases of operations. The data may be based on monitoring of RF effects caused by operations of other wireless transmitters and/or receivers. A coexistence manager may exchange data and/or control signaling with the wireless transmitters and/or receivers during to performing the calibration.
    • 本发明的方面可以包括校准通信设备中的无线发射机和/或接收机的操作,以减轻通过通信设备中的无线接口在并发通信期间引起的干扰。 可以动态地执行校准,并且可以包括管理通信设备和/或无线发射器和/或接收器的系统参数和/或物理资源; 管理经由无线发射机和/或接收机执行的无线通信的特性; 和/或管理所述通信设备中的所述多个无线发射机和/或接收机中的两个或更多个之间的隔离。 可以在活动和/或空闲操作阶段期间,经由无线发射器和/或接收器产生的数据执行校准。 数据可以基于由其他无线发射器和/或接收器的操作引起的RF效应的监视。 在执行校准期间,共存管理器可以与无线发射机和/或接收机交换数据和/或控制信令。
    • 30. 发明申请
    • Angle of arrival and/or range estimation within a wireless communication device
    • 无线通信设备内的到达角度和/或范围估计
    • US20100302102A1
    • 2010-12-02
    • US12787256
    • 2010-05-25
    • Prasanna DesaiBrima B. IbrahimSiukai Mak
    • Prasanna DesaiBrima B. IbrahimSiukai Mak
    • G01S5/02
    • G01S3/14G01S3/50G01S5/12G01S11/06H04W64/006
    • Angle of arrival and/or range estimation within a wireless communication device. Appropriate processing of communications received by a wireless communication device is performed to determine the angle of arrival of the communication (e.g., with respect to some coordinate basis of the wireless communication device). Also, appropriate processing of the communications may be performed in accordance with range estimation as performed by the wireless communication device to determine the distance between the transmitting and receiving wireless communication devices. There are two separate modes of packet processing operations that may be performed: (1) when contents of the received packet are known, and (2) when contents of the received packet are unknown. The wireless communication device includes a number of antenna, and a switching mechanism switches from among the various antennae capitalizing on the spatial diversity of the antennae to generate a multi-antenna signal.
    • 无线通信设备内的到达角度和/或范围估计。 执行由无线通信设备接收的通信的适当处理以确定通信的到达角度(例如,关于无线通信设备的某些坐标基础)。 此外,可以根据由无线通信设备执行的范围估计来执行通信的适当处理,以确定发送和接收无线通信设备之间的距离。 可以执行两种分组处理操作的模式:(1)当接收到的分组的内容是已知的,以及(2)当接收的分组的内容是未知的时。 无线通信装置包括多个天线,并且切换机构从各种天线之间切换,利用天线的空间分集来生成多天线信号。