公开(公告)号：US20070207751A1

公开(公告)日：2007-09-06

申请号：US11711719

申请日：2007-02-28

申请人： Arya Behzad ,  Prasanna Desai ,  Brima Ibrahim ,  Mark Gonikberg ,  Thomas Varghese

发明人： Arya Behzad ,  Prasanna Desai ,  Brima Ibrahim ,  Mark Gonikberg ,  Thomas Varghese

IPC分类号： H04B7/08

CPC分类号： H04B1/406 ,  H04B1/18

摘要： A radio receiver is described that processes multiple wireless standards using a single antenna according to embodiments of the invention. The radio receiver includes a single antenna, and a low noise amplifier that is connected to the antenna, without an intervening power divider or power splitter. The output of the low noise amplifier feeds multiple wireless receivers in a parallel arrangement that are operating according to different communications standards, including for example a Bluetooth receiver, and a WLAN 802.11 receiver. Additional wireless standards and their corresponding receivers could be added as well. The input impedance of the low noise amplifier defines the impedance seen by the antenna, regardless of which operational standard is actually in use. Since the input impedance of the low noise amplifier is substantially independent of whether the Bluetooth or WLAN paths are ON or OFF, simultaneous operation can be accomplished.

摘要翻译： 描述了根据本发明的实施例的使用单个天线处理多个无线标准的无线电接收机。 无线电接收机包括单个天线和连接到天线的低噪声放大器，而没有中间的功率分配器或功率分配器。 低噪声放大器的输出以并行布置馈送多个无线接收器，该并行装置根据不同的通信标准（例如蓝芽接收机）和WLAN 802.11接收机进行操作。 还可以添加附加的无线标准及其对应的接收器。 低噪声放大器的输入阻抗定义天线所看到的阻抗，无论实际使用哪个操作标准。 由于低噪声放大器的输入阻抗基本上与蓝牙或WLAN路径是ON还是OFF无关，所以可以实现同时的操作。

公开(公告)号：US20080238807A1

公开(公告)日：2008-10-02

申请号：US11880257

申请日：2007-07-20

申请人： Brima Ibrahim ,  Prasanna Desai ,  Mark Gonikberg

发明人： Brima Ibrahim ,  Prasanna Desai ,  Mark Gonikberg

IPC分类号： H01Q21/00

CPC分类号： H04B1/401 ,  H01Q21/29 ,  H04B1/44 ,  H04B7/04 ,  H04W88/06

摘要： A method includes determining that an antenna shared between a Bluetooth transceiver and a WLAN transceiver is available to the WLAN transceiver based on an activity signal associated with the Bluetooth transceiver. Access to the shared antenna is provided to the WLAN transceiver based on the determination, and the WLAN transceiver is configured to use diversity in transacting WLAN signals via a plurality of antennas, including the shared antenna. Access to the shared antenna is transferred from the WLAN transceiver to the Bluetooth transceiver based on the activity signal.

摘要翻译： 一种方法包括基于与蓝牙收发器相关联的活动信号来确定WLAN收发器和WLAN收发器之间共享的天线可用于WLAN收发器。 基于确定，向WLAN收发器提供对共享天线的访问，并且WLAN收发器被配置为使用经由包括共享天线的多个天线来处理WLAN信号的分集。 根据活动信号，从WLAN收发器到蓝牙收发器的访问共享天线。

公开(公告)号：US08615270B2

公开(公告)日：2013-12-24

申请号：US11880257

申请日：2007-07-20

申请人： Brima Ibrahim ,  Prasanna Desai ,  Mark Gonikberg

发明人： Brima Ibrahim ,  Prasanna Desai ,  Mark Gonikberg

IPC分类号： H04M1/00

CPC分类号： H04B1/401 ,  H01Q21/29 ,  H04B1/44 ,  H04B7/04 ,  H04W88/06

摘要： A method includes determining that an antenna shared between a Bluetooth transceiver and a WLAN transceiver is available to the WLAN transceiver based on an activity signal associated with the Bluetooth transceiver. Access to the shared antenna is provided to the WLAN transceiver based on the determination, and the WLAN transceiver is configured to use diversity in transacting WLAN signals via a plurality of antennas, including the shared antenna. Access to the shared antenna is transferred from the WLAN transceiver to the Bluetooth transceiver based on the activity signal.

摘要翻译： 一种方法包括基于与蓝牙收发器相关联的活动信号来确定WLAN收发器和WLAN收发器之间共享的天线可用于WLAN收发器。 基于确定，向WLAN收发器提供对共享天线的访问，并且WLAN收发器被配置为使用经由包括共享天线的多个天线来处理WLAN信号的分集。 根据活动信号，从WLAN收发器到蓝牙收发器的访问共享天线。

公开(公告)号：US08345704B2

公开(公告)日：2013-01-01

申请号：US11950559

申请日：2007-12-05

申请人： Prasanna Desai ,  Brima Ibrahim ,  John Walley ,  Gang Lu

发明人： Prasanna Desai ,  Brima Ibrahim ,  John Walley ,  Gang Lu

IPC分类号： H04L12/40

CPC分类号： H04B1/0067 ,  H04B1/0064 ,  H04B1/0475 ,  H04B1/40 ,  H04W72/02 ,  H04W88/06

摘要： Aspects of a method and system for multi-radio coexistence and a collaborative interface may include exchanging information between a plurality of radio transceivers integrated within a single device to enable coexistence, and coordinating sharing of transmit and receive resources between the plurality of radio transceivers by controlling access to the transmit and receive resources, where any one of the plurality of radio transceivers may be enabled to be selected to control the access based on the exchanged information. Selecting one of the radio transceivers for the controlling of the access band may be based on processing capability or priority of communication. The resources may comprise frequency bands, time slots, and antenna access. The information may be exchanged via a serial bus between the plurality of radio transceivers, where the serial bus may conform to an I2C (I-square-C) multi-master serial bus. Each of the radio transceivers may conform to one or more radio frequency technology.

摘要翻译： 用于多无线电共存和协作接口的方法和系统的方面可以包括在集成在单个设备内的多个无线电收发器之间交换信息以实现共存，以及通过控制来协调多个无线电收发器之间的发送和接收资源的共享 访问发送和接收资源，其中可以使多个无线收发器中的任一个能够被选择以基于所交换的信息来控制访问。 选择用于控制接入频带的无线电收发机之一可以基于处理能力或通信的优先级。 资源可以包括频带，时隙和天线接入。 信息可以通过串行总线在多个无线电收发器之间交换，其中串行总线可以符合I2C（I-square-C）多主机串行总线。 每个无线电收发器可以符合一个或多个射频技术。

公开(公告)号：US20110294432A1

公开(公告)日：2011-12-01

申请号：US13206035

申请日：2011-08-09

申请人： Prasanna Desai ,  Sven Jerlhagen ,  Brima Ibrahim ,  Siukai Mak ,  Asif Grushkevich ,  John Walley

发明人： Prasanna Desai ,  Sven Jerlhagen ,  Brima Ibrahim ,  Siukai Mak ,  Asif Grushkevich ,  John Walley

IPC分类号： H04B7/00

CPC分类号： H04B1/715 ,  H04B2001/7154 ,  H04W28/04 ,  H04W84/18

摘要： A method for frequency selection in a wireless communication system, includes performing in a wireless device, receiving at least one signal at a current frequency; processing at least one data packet received via the received at least one signal to determine the presence of bit errors; characterizing the received at least one signal received at the current frequency based on the processing of the at least one data packet; classifying the current frequency based on at least the characterization of the received at least one signal; and selecting the current frequency based on the classification. At least one signal strength measurement may be performed on the received at least one signal, and the processing of the at least one data packet may be performed within a current channel classification update interval.

摘要翻译： 一种在无线通信系统中进行频率选择的方法，包括在无线设备中执行以当前频率接收至少一个信号; 处理经由所接收的至少一个信号接收的至少一个数据分组，以确定位错误的存在; 基于所述至少一个数据分组的处理来表征所接收的以当前频率接收的至少一个信号; 至少基于所接收的至少一个信号的特征来对当前频率进行分类; 并根据分类选择当前频率。 可以对所接收的至少一个信号执行至少一个信号强度测量，并且可以在当前信道分类更新间隔内执行至少一个数据分组的处理。

公开(公告)号：US20110021142A1

公开(公告)日：2011-01-27

申请号：US12546621

申请日：2009-08-24

申请人： Prasanna Desai ,  Chikan Kwan ,  Angel Polo ,  Song Qiao ,  Cindy Tian ,  Yuan Zhuang ,  Guoxin Xie ,  Latha Caliaperoumal ,  Brima Ibrahim

发明人： Prasanna Desai ,  Chikan Kwan ,  Angel Polo ,  Song Qiao ,  Cindy Tian ,  Yuan Zhuang ,  Guoxin Xie ,  Latha Caliaperoumal ,  Brima Ibrahim

IPC分类号： H04B7/00

CPC分类号： H04W8/005 ,  H04W4/80 ,  H04W52/0216 ,  H04W84/18 ,  Y02D70/00 ,  Y02D70/144

摘要： A dual-mode BLE device identifies idle intervals within Bluetooth BR/EDR traffic communications. The identified idle intervals are used by the dual-mode BLE device to concurrently perform various BLE activities. For example, advertising packet transmissions, advertising packet scanning, connection setup, and/or data packet communication may be concurrently performed within identified idle intervals within the Bluetooth BR/EDR traffic communications. Packet transmission timing, advertising interval, scan window, and/or packet size are determined based on the identified idle intervals within the Bluetooth BR/EDR traffic communications. A scan window is adjusted based on timing of expected advertising transmissions and/or advertising interval(s) for saving power. BLE packets and Bluetooth BR/EDR packets may be detected in a single advertising channel. Maximal payload size is set based on the identified idle intervals within Bluetooth BR/EDR traffic communications. As a slave, the dual-mode BLE device updates connection parameters based on the identified idle intervals within Bluetooth BR/EDR traffic communications.

摘要翻译： 双模式BLE设备识别蓝牙BR / EDR通信通信中的空闲间隔。 识别的空闲间隔由双模BLE设备用于同时执行各种BLE活动。 例如，广告分组传输，广告分组扫描，连接建立和/或数据分组通信可以在蓝牙BR / EDR业务通信内的标识的空闲间隔内同时执行。 基于蓝牙BR / EDR业务通信中识别的空闲间隔来确定分组传输定时，广告间隔，扫描窗口和/或分组大小。 基于预期的广告发送的定时和/或用于节省功率的广告间隔来调整扫描窗口。 可以在单个广告信道中检测到BLE分组和蓝牙BR / EDR分组。 基于蓝牙BR / EDR业务通信中识别的空闲间隔来设置最大有效载荷大小。 作为从设备，双模BLE设备基于蓝牙BR / EDR业务通信中识别的空闲间隔来更新连接参数。

公开(公告)号：US20090147763A1

公开(公告)日：2009-06-11

申请号：US11950559

申请日：2007-12-05

申请人： Prasanna Desai ,  Brima Ibrahim ,  John Walley ,  Gang Lu

发明人： Prasanna Desai ,  Brima Ibrahim ,  John Walley ,  Gang Lu

IPC分类号： H04J1/00

CPC分类号： H04B1/0067 ,  H04B1/0064 ,  H04B1/0475 ,  H04B1/40 ,  H04W72/02 ,  H04W88/06

摘要： Aspects of a method and system for multi-radio coexistence and a collaborative interface may include exchanging information between a plurality of radio transceivers integrated within a single device to enable coexistence, and coordinating sharing of transmit and receive resources between the plurality of radio transceivers by controlling access to the transmit and receive resources, where any one of the plurality of radio transceivers may be enabled to be selected to control the access based on the exchanged information. Selecting one of the radio transceivers for the controlling of the access band may be based on processing capability or priority of communication. The resources may comprise frequency bands, time slots, and antenna access. The information may be exchanged via a serial bus between the plurality of radio transceivers, where the serial bus may conform to an I2C (I-square-C) multi-master serial bus. Each of the radio transceivers may conform to one or more radio frequency technology.

摘要翻译： 用于多无线电共存和协作接口的方法和系统的方面可以包括在集成在单个设备内的多个无线电收发器之间交换信息以实现共存，以及通过控制来协调多个无线电收发器之间的发送和接收资源的共享 访问发送和接收资源，其中可以使多个无线收发器中的任一个能够被选择以基于所交换的信息来控制访问。 选择用于控制接入频带的无线电收发机之一可以基于处理能力或通信的优先级。 资源可以包括频带，时隙和天线接入。 信息可以通过串行总线在多个无线电收发器之间交换，其中串行总线可以符合I2C（I-square-C）多主机串行总线。 每个无线电收发器可以符合一个或多个射频技术。

公开(公告)号：US07301993B2

公开(公告)日：2007-11-27

申请号：US10243857

申请日：2002-09-13

申请人： Brima Ibrahim ,  Prasanna Desai

发明人： Brima Ibrahim ,  Prasanna Desai

IPC分类号： H04B1/00

CPC分类号： H04B1/7093 ,  H04L25/0232

摘要： A method and apparatus for channel estimation in a spread spectrum receiver include processing that begins by despreading a received spread spectrum complex baseband sample utilizing a pseudorandom spreading sequence to produce a despread baseband symbol. The processing continues by filtering the despread baseband symbol to attenuate adverse channel effects based on a channel response estimate to produce a filtered despread baseband symbol. The processing then continues by decoding the filtered despread baseband symbol to produce recaptured data. The processing continues by modulating the recaptured data to produce a remodulated symbol. The processing then continues by producing a reconstructed spread spectrum complex baseband sample from the remodulated symbol based on the pseudorandom spreading sequence. The processing then continues by generating the channel response estimate such that a convolution of the channel response estimate with the reconstructed spread spectrum complex baseband sample substantially emulates the received spread spectrum complex baseband sample.

摘要翻译： 用于扩展频谱接收机中的信道估计的方法和装置包括利用伪随机扩展序列解扩接收的扩展频谱复基带采样开始的处理，以产生解扩基带符号。 通过对解扩基带符号进行滤波以基于信道响应估计来衰减不利信道效应以产生经滤波的解扩基带符号，继续处理。 然后，通过对经滤波的解扩基带符号进行解码以产生再捕获的数据，继续处理。 该处理继续通过调制重新捕获的数据以产生重新调制的符号。 然后通过基于伪随机扩展序列从重新调制的符号产生重构的扩展频谱复基带样本，继续处理。 然后通过产生信道响应估计继续进行处理，使得信道响应估计与重建的扩展频谱复基带采样的卷积基本上模拟接收的扩展频谱复基带样本。

公开(公告)号：US20060270346A1

公开(公告)日：2006-11-30

申请号：US11286555

申请日：2005-11-22

申请人： Brima Ibrahim ,  Mitchell Buznitsky ,  Ahmadreza Rofougaran ,  John Walley ,  Bojko Marholev ,  Roy Tobin ,  Prasanna Desai ,  Angel Polo ,  Hea Kim ,  Paul Lettieri ,  Siukai Mak

发明人： Brima Ibrahim ,  Mitchell Buznitsky ,  Ahmadreza Rofougaran ,  John Walley ,  Bojko Marholev ,  Roy Tobin ,  Prasanna Desai ,  Angel Polo ,  Hea Kim ,  Paul Lettieri ,  Siukai Mak

IPC分类号： H04B7/00 ,  H04M1/00

CPC分类号： H04H20/08 ,  H04B1/406 ,  H04H60/80 ,  H04H60/92 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/164 ,  Y02D70/40

摘要： A method and system for a single chip integrated Bluetooth and FM transceiver and baseband processor are provided. The single chip may comprise a Bluetooth radio, an FM radio, a processor system, and a peripheral transport unit (PTU). FM data may be received and/or transmitted via the FM radio and Bluetooth data may be received and/or transmitted via the Bluetooth radio. The FM radio may receive radio data system (RDS) data. The PTU may support digital and analog interfaces. A processor in the processor system may time-multiplex processing of FM data and processing of Bluetooth data. The single chip may operate in an FM-only, a Bluetooth-only, and an FM-Bluetooth mode. The single chip may reduce power consumption by disabling portions of the Bluetooth radio during FM-only mode and/or disabling analog circuitry when performing digital processing. Communication between Bluetooth and FM channels may be enabled via the single chip.

摘要翻译： 提供了用于单芯片集成蓝牙和FM收发器和基带处理器的方法和系统。 单芯片可以包括蓝牙无线电，FM无线电，处理器系统和外围传输单元（PTU）。 可以通过FM收音机接收和/或发送FM数据，并且可以经由蓝牙无线电接收和/或发送蓝牙数据。 FM收音机可以接收无线电数据系统（RDS）数据。 PTU可以支持数字和模拟接口。 处理器系统中的处理器可以对FM数据进行时间复用处理和处理蓝牙数据。 单芯片可以仅在FM，蓝牙和FM蓝牙模式下工作。 单芯片可以通过在仅FM模式期间禁用蓝牙无线电的部分并且/或在执行数字处理时禁用模拟电路来降低功耗。 蓝牙和FM频道之间的通信可以通过单个芯片启用。

公开(公告)号：US20060084383A1

公开(公告)日：2006-04-20

申请号：US11286844

申请日：2005-11-22

申请人： Brima Ibrahim ,  John Walley ,  Prasanna Desai

发明人： Brima Ibrahim ,  John Walley ,  Prasanna Desai

IPC分类号： H04Q7/20

CPC分类号： H04W84/12 ,  H04W16/14 ,  H04W72/1215 ,  H04W74/0875 ,  H04W84/18 ,  H04W88/06

摘要： A method and system for collocated IEEE 802.11 b/g WLAN, and Bluetooth (BT) with FM in coexistent operation are provided. A single chip comprising an integrated BT radio and an integrated FM radio in a coexistence station may generate a priority signal to disable WLAN transmissions in a WLAN radio when a BT HV3 frame is available for transmission. When the priority signal is asserted, an exponentially growing retransmission backoff mechanism in the WLAN radio may be disabled. Moreover, when the BT radio and the WLAN radio are enabled for coexistence operation, a WLAN fragmentation threshold in the WLAN radio may be modified based on a WLAN modulation rate and the BT HV3 frame duration. An on-chip processor that time multiplexes FM and Bluetooth data processing may be utilized to control the BT radio operation and the FM radio operation in the single chip.

摘要翻译： 提供了一种用于并置IEEE 802.11b / g WLAN的方法和系统，以及具有FM的蓝牙（BT）的共存操作。 在BT HV3帧可用于传输的情况下，包括集成BT无线电和共存站中的集成FM无线电的单个芯片可以生成优先级信号以禁用WLAN无线电中的WLAN传输。 当优先级信号被断言时，WLAN无线电中的指数增长的重传退避机制可能被禁用。 此外，当BT无线电和WLAN无线电被启用以共存操作时，可以基于WLAN调制速率和BT HV3帧持续时间来修改WLAN无线电中的WLAN分段阈值。 时分复用FM和蓝牙数据处理的片上处理器可用于控制单芯片中的BT无线电操作和FM无线电操作。