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1. 发明申请

WO2007038723A3 RF CHANNEL SWITCHING IN BROADCAST OFDM SYSTEMS 审中-公开
标题翻译：广播OFDM系统中的RF信道切换
公开(公告)号：WO2007038723A3
公开(公告)日：2008-12-11
申请号：PCT/US2006037992
申请日：2006-09-27
申请人： QUALCOMM INC , LI LINBO , MANTRAVADI ASHOK , LING FUYUN , KRISHNAMOORTHI RAGHURAMAN
发明人： LI LINBO , MANTRAVADI ASHOK , LING FUYUN , KRISHNAMOORTHI RAGHURAMAN
IPC分类号： H04W48/16
CPC分类号： H04W48/16
摘要： Systems and methodologies are described that facilitate monitoring RF channels in a wireless communication environment to determine whether one or more channels comprise a forward-link-only (FLO) signal. A receiver can receive a first RF channel with a FLO signal and can monitor other RF channels for FLO signals. Upon a determination that a monitored RF channel comprises a FLO signal, the receiver can switch between the first RF channel and the monitored RF channel to facilitate providing seamless reception of the FLO signal, which can be superframe synchronized between RF channels. FLO signal detection can be performed using one or more of a wide-area identification channel energy detection protocol and a wide-area overhead information symbol decoding error detection protocol.
摘要翻译：描述了便于在无线通信环境中监视RF信道以确定一个或多个信道是包括仅前向链路（FLO）信号的系统和方法。接收机可以接收具有FLO信号的第一RF信道，并且可以监视FLO信号的其他RF信道。在确定被监视的RF信道包括FLO信号之后，接收机可以在第一RF信道和所监视的RF信道之间切换，以便于提供FLO信号的无缝接收，FLO信号可以在RF信道之间超帧同步。可以使用广域识别信道能量检测协议和广域开销信息符号解码错误检测协议中的一个或多个来执行FLO信号检测。

2. 发明申请

WO2006099530A2 AUTOMATIC GAIN CONTROL FOR A WIRELESS RECEIVER 审中-公开
标题翻译：无线接收机的自动增益控制
公开(公告)号：WO2006099530A2
公开(公告)日：2006-09-21
申请号：PCT/US2006/009473
申请日：2006-03-13
申请人： QUALCOMM INCORPORATED , MURTHY, Vinay , KRISHNAMOORTHI, Raghuraman , LI, Linbo
发明人： MURTHY, Vinay , KRISHNAMOORTHI, Raghuraman , LI, Linbo
IPC分类号： H03G3/30
CPC分类号： H03G7/007 , H03G3/3068 , H03G3/3078 , H03G3/3089 , H04B1/18 , H04L27/2601 , H04L27/2614 , H04L27/2647
摘要： Techniques for performing automatic gain control (AGC) at a wireless receiver are described. The total gain for the wireless receiver is achieved with discrete gain steps for analog circuitry and continuous gain for a digital variable gain amplifier (DVGA). An AGC loop is updated based on power measurements for an output signal from the DVGA. A first gain for the analog circuitry is selected from among multiple discrete gain values based on the AGC loop to maintain the average power of a baseband signal within a predetermined range at an analog-to-digital converter (ADC) input. A second gain for the DVGA is selected based on the AGC loop to maintain the average power of the output signal at a reference power level. The first gain is switched in a manner to avoid saturation of the ADC caused by the baseband signal and to provide switching hysteresis. The AGC may be performed in log domain and with multiple modes.
摘要翻译：描述了用于在无线接收器处执行自动增益控制（AGC）的技术。无线接收器的总增益是通过模拟电路的离散增益级和数字可变增益放大器（DVGA）的连续增益实现的。根据来自DVGA的输出信号的功率测量更新AGC环路。基于AGC环路从多个离散增益值中选择模拟电路的第一增益，以在模数转换器（ADC）输入处将基带信号的平均功率保持在预定范围内。根据AGC环路选择DVGA的第二个增益，以将输出信号的平均功率保持在参考功率电平。第一增益以避免由基带信号引起的ADC饱和并提供切换滞后的方式切换。 AGC可以在日志域和多种模式下执行。

3. 发明申请

WO2009015365A1 CHANNEL MONITORING METHODS IN WIRELESS BROADCAST SYSTEMS 审中-公开
标题翻译：无线广播系统中的信道监测方法
公开(公告)号：WO2009015365A1
公开(公告)日：2009-01-29
申请号：PCT/US2008/071252
申请日：2008-07-25
申请人： QUALCOMM Incorporated , LI, Linbo , MANTRAVADI, Ashok , LING, Fuyun , KRISHNAMOORTHI, Raghuraman
发明人： LI, Linbo , MANTRAVADI, Ashok , LING, Fuyun , KRISHNAMOORTHI, Raghuraman
IPC分类号： H04W48/16
CPC分类号： H04W72/005
摘要： Systems and methodologies are described that facilitate monitoring RF channels in a wireless communication environment to determine whether one or more channels comprise a forward-link-only (FLO) signal. A receiver can receive a first RF channel with a FLO signal and can monitor other RF channels for FLO signals. Upon a determination that a monitored RF channel comprises a FLO signal, the receiver can switch between the first RF channel and the monitored RF channel. FLO signal detection can be performed using one or more of a wide-area identification channel energy detection protocol and a wide-area overhead information symbol decoding error detection protocol.
摘要翻译：描述了便于在无线通信环境中监视RF信道以确定一个或多个信道是包括仅前向链路（FLO）信号的系统和方法。接收机可以接收具有FLO信号的第一RF信道，并且可以监视FLO信号的其他RF信道。在确定所监视的RF信道包括FLO信号时，接收机可以在第一RF信道和被监控的RF信道之间切换。可以使用广域识别信道能量检测协议和广域开销信息符号解码错误检测协议中的一个或多个来执行FLO信号检测。

4. 发明申请

WO2008124332A1 METHODS AND APPARATUS FOR RF CHANNEL SWITCHING IN A MULTI-FREQUENCY NETWORK 审中-公开
标题翻译：在多频网络中进行RF信道切换的方法和装置
公开(公告)号：WO2008124332A1
公开(公告)日：2008-10-16
申请号：PCT/US2008/058524
申请日：2008-03-27
申请人： QUALCOMM INCORPORATED , GUPTA, Binita , CHEN, An Mei , LI, Linbo , KRISHNAMOORTHI, Raghuraman , MANTRAVADI, Ashok
发明人： GUPTA, Binita , CHEN, An Mei , LI, Linbo , KRISHNAMOORTHI, Raghuraman , MANTRAVADI, Ashok
IPC分类号： H04Q7/38
CPC分类号： H04W72/005 , H04H20/06 , H04H20/22 , H04H20/42 , H04L5/0023 , H04L5/0037 , H04L5/0091 , H04W16/02
摘要： Methods and apparatus for RF channel switching in a multi-frequency network. In an aspect, a method includes identifying a local area operations infrastructure (LOI) in the multi-frequency network, generating a channel description message (700) that associates at least one descrambling sequence identifier (704) with each RF channel associated with the LOI, respectively, and distributing the CDM over the LOI. In another aspect, a method includes receiving a CDM (1104) that associates at least one descrambling sequence identifier with each RF channel available in a LOI, detecting an RF channel switch event (1106) that identifies a selected RF channel, determining a selected descrambling sequence identifier from the CDM based on the selected RF channel (1110), switching to the selected RF channel wherein the selected descrambling sequence identifier identifies a selected descrambling sequence to descramble desired content carried on the selected RF channel (1112), and acquiring the desired content on the selected RF channel (1116).
摘要翻译：多频网络中RF信道切换的方法和装置。一方面，一种方法包括识别多频网络中的局域操作基础设施（LOI），产生信道描述消息（700），其将至少一个解扰序列标识符（704）与与LOI相关联的每个RF信道，并将清洁发展机制分配到LOI上。在另一方面，一种方法包括接收将至少一个解扰序列标识符与LOI中可用的每个RF信道相关联的CDM（1104），检测识别所选RF信道的RF信道切换事件（1106），确定选择的解扰基于所选择的RF信道（1110）从CDM的序列标识符切换到所选择的RF信道，其中所选择的解扰序列标识符识别所选择的解扰序列以解扰所选择的RF信道上承载的期望内容（1112），并获取期望的所选RF信道上的内容（1116）。

5. 发明申请

WO2008116193A1 METHODS AND APPARATUS FOR RF CHANNEL SWITCHING IN A MULTI-FREQUENCY NETWORK 审中-公开
标题翻译：在多频网络中进行RF信道切换的方法和装置
公开(公告)号：WO2008116193A1
公开(公告)日：2008-09-25
申请号：PCT/US2008/057934
申请日：2008-03-21
申请人： QUALCOMM INCORPORATED , GUPTA, Binita , CHEN, An, Mei , SHAH, Devarshi , LI, Linbo , KRISHNAMOORTHI, Raghuraman , MANTRAVADI, Ashok
发明人： GUPTA, Binita , CHEN, An, Mei , SHAH, Devarshi , LI, Linbo , KRISHNAMOORTHI, Raghuraman , MANTRAVADI, Ashok
IPC分类号： H04Q7/38
CPC分类号： H04W76/11 , H04W48/12 , H04W72/02 , H04W76/15
摘要： Methods and apparatus for RF channel switching in a multi-frequency network. In an aspect, a method includes identifying a multiplex set that comprises one or more content flows, wherein the multiplex set is one of a vertical multiplex (VM) set and a unified multiplex (UM) set, generating an overhead message that associates one or more RF carrier frequencies with the one or more content flows, and transmitting the overhead message over the multi-frequency network. An apparatus includes input logic configured to receive an overhead message that associates one or more content flows with one or more RF carrier frequencies, and processing logic configured to detect a channel switch event that identifies a selected content flow, determine a selected RF carrier frequency associated with the selected content flow based on the overhead message, and switch to the selected RF carrier frequency to receive the selected content flow.
摘要翻译：多频网络中RF信道切换的方法和装置。一方面，一种方法包括识别包括一个或多个内容流的多路复用集合，其中多路复用集合是垂直多路复用（VM）集合和统一多路复用（UM）集合之一，生成将开销消息与一个或多个内容流相关联的开销消息，具有一个或多个内容流的更多RF载波频率，以及通过多频网络发送开销消息。一种装置包括输入逻辑，其被配置为接收将一个或多个内容流与一个或多个RF载波频率相关联的开销消息，以及被配置为检测识别所选内容流的信道切换事件的处理逻辑，确定所选择的RF载波频率相关联所选择的内容流程基于开销消息，并且切换到所选择的RF载波频率以接收所选择的内容流。

6. 发明申请

WO2006099530A3 AUTOMATIC GAIN CONTROL FOR A WIRELESS RECEIVER 审中-公开
标题翻译：无线接收机的自动增益控制
公开(公告)号：WO2006099530A3
公开(公告)日：2006-12-21
申请号：PCT/US2006009473
申请日：2006-03-13
申请人： QUALCOMM INC , MURTHY VINAY , KRISHNAMOORTHI RAGHURAMAN , LI LINBO
发明人： MURTHY VINAY , KRISHNAMOORTHI RAGHURAMAN , LI LINBO
IPC分类号： H03G3/30
CPC分类号： H03G7/007 , H03G3/3068 , H03G3/3078 , H03G3/3089 , H04B1/18 , H04L27/2601 , H04L27/2614 , H04L27/2647
摘要： Techniques for performing automatic gain control (AGC) at a wireless receiver are described. The total gain for the wireless receiver is achieved with discrete gain steps for analog circuitry and continuous gain for a digital variable gain amplifier (DVGA). An AGC loop is updated based on power measurements for an output signal from the DVGA. A first gain for the analog circuitry is selected from among multiple discrete gain values based on the AGC loop to maintain the average power of a baseband signal within a predetermined range at an analog-to-digital converter (ADC) input. A second gain for the DVGA is selected based on the AGC loop to maintain the average power of the output signal at a reference power level. The first gain is switched in a manner to avoid saturation of the ADC caused by the baseband signal and to provide switching hysteresis. The AGC may be performed in log domain and with multiple modes.
摘要翻译：描述了在无线接收机处执行自动增益控制（AGC）的技术。无线接收机的总增益通过模拟电路的离散增益步长和数字可变增益放大器（DVGA）的连续增益来实现。基于来自DVGA的输出信号的功率测量来更新AGC环路。基于AGC环路从多个离散增益值中选择模拟电路的第一增益，以将模拟 - 数字转换器（ADC）输入端的基带信号的平均功率维持在预定范围内。基于AGC环路选择DVGA的第二增益，以将输出信号的平均功率维持在参考功率电平。第一增益以避免由基带信号引起的ADC饱和并提供开关滞后的方式进行切换。 AGC可以在对数域和多种模式下执行。

7. 发明申请

WO2009015362A1 CHANNEL HANDOFF METHODS IN WIRELESS BROADCAST SYSTEMS 审中-公开
标题翻译：无线广播系统中的信道切换方法
公开(公告)号：WO2009015362A1
公开(公告)日：2009-01-29
申请号：PCT/US2008/071244
申请日：2008-07-25
申请人： QUALCOMM INCORPORATED , LI, Linbo , MANTRAVADI, Ashok , LING, Fuyun , KRISHNAMOORTHI, Raghuraman
发明人： LI, Linbo , MANTRAVADI, Ashok , LING, Fuyun , KRISHNAMOORTHI, Raghuraman
IPC分类号： H04Q7/38
CPC分类号： H04W36/28 , H04W36/30 , H04W72/085
摘要： Systems and methodologies are described that facilitate monitoring RF channels in a wireless communication environment to determine whether one or more channels comprise a forward-link-only (FLO) signal. A receiver can receive a first RF channel with a FLO signal and can monitor other RF channels for FLO signals. Upon a determination that a monitored RF channel comprises a FLO signal, the receiver can switch between the first RF channel and the monitored RF channel, employing information on current MLC decoding status, to facilitate providing seamless reception of the FLO signal, which can be superframe synchronized between RF channels. FLO signal detection can be performed using one or more of a wide-area identification channel energy detection protocol and a wide-area overhead information symbol decoding error detection protocol.
摘要翻译：描述了便于在无线通信环境中监视RF信道以确定一个或多个信道是包括仅前向链路（FLO）信号的系统和方法。接收机可以接收具有FLO信号的第一RF信道，并且可以监视FLO信号的其他RF信道。在确定被监视的RF信道包括FLO信号之后，接收机可以使用关于当前MLC解码状态的信息在第一RF信道和被监控的RF信道之间切换，以便于提供FLO信号的无缝接收，其可以是超帧在RF信道之间同步。可以使用广域识别信道能量检测协议和广域开销信息符号解码错误检测协议中的一个或多个来执行FLO信号检测。

8. 发明申请

WO2008058059A3 NARROW-BAND INTERFERENCE CANCELLER 审中-公开
标题翻译：窄带干扰CANCELLER
公开(公告)号：WO2008058059A3
公开(公告)日：2008-08-07
申请号：PCT/US2007083594
申请日：2007-11-05
申请人： QUALCOMM INC , VRCELJ BOJAN , MANTRAVADI ASHOK , LING FUYUN , LI LINBO , KRISHNAMOORTHI RAGHURAMAN , CHARI MURALI RAMASWAMY , MURTHY VINAY
发明人： VRCELJ BOJAN , MANTRAVADI ASHOK , LING FUYUN , LI LINBO , KRISHNAMOORTHI RAGHURAMAN , CHARI MURALI RAMASWAMY , MURTHY VINAY
IPC分类号： H04B1/10 , H04B15/00
CPC分类号： H04L25/03044 , H04B1/1036 , H04B1/109 , H04B15/00 , H04B2215/061 , H04L2025/03477
摘要： The disclosure is directed to a receiver. The receiver includes an interference canceller configured to filter digital samples produced from a modulated signal transmitted over a wireless channel, and a digital variable gain amplifier (DVGA) configured to amplify the filtered digital samples.
摘要翻译：本公开涉及一种接收机。接收机包括被配置为对通过无线信道传输的调制信号产生的数字样本进行滤波的干扰消除器，以及被配置成放大经滤波的数字样本的数字可变增益放大器（DVGA）。

9. 发明申请

WO2007118101A1 METHOD AND SYSTEM FOR AUTOMATIC GAIN CONTROL DURING SIGNAL ACQUISITION 审中-公开
标题翻译：信号采集期间自动增益控制的方法与系统
公开(公告)号：WO2007118101A1
公开(公告)日：2007-10-18
申请号：PCT/US2007/065896
申请日：2007-04-03
申请人： QUALCOMM INCORPORATED , MURTHY, Vinay , LI, Linbo , KRISHNAMOORTHI, Raghuraman
发明人： MURTHY, Vinay , LI, Linbo , KRISHNAMOORTHI, Raghuraman
IPC分类号： H03G3/30
CPC分类号： H03G3/3052
摘要： The disclosure is directed to a mobile communication device that includes automatic gain control (AGC) circuitry and operates in either a tracking mode or an acquisition mode. A received signal is sampled n times to calculate an energy estimate that is used to set the gain control values within the AGC circuitry. The value of n varies depending on whether the handset is operating in the acquisition mode or the tracking mode. Acquisition mode is typically considered to be the mode prior to coarse timing acquisition, also referred to as frame acquisition.
摘要翻译：本公开涉及包括自动增益控制（AGC）电路并且以跟踪模式或采集模式操作的移动通信设备。接收到的信号被采样n次以计算用于设置AGC电路内的增益控制值的能量估计。 n的值根据手机在采集模式或跟踪模式下的运行而变化。采集模式通常被认为是粗略定时采集之前的模式，也称为帧采集。

10. 发明申请

WO2007117723A2 PHASE COMPENSATION FOR ANALOG GAIN SWITCHING IN OFDM MODULATED PHYSICAL CHANNEL 审中-公开
标题翻译： OFDM调制物理通道中模拟增益切换的相位补偿
公开(公告)号：WO2007117723A2
公开(公告)日：2007-10-18
申请号：PCT/US2007/060189
申请日：2007-01-05
申请人： QUALCOMM INCORPORATED , MURTHY, Vinay , LI, Linbo , KRISHNAMOORTHI, Raghuraman
发明人： MURTHY, Vinay , LI, Linbo , KRISHNAMOORTHI, Raghuraman
IPC分类号： H04B17/40
CPC分类号： H03G1/0088 , H03G3/3052 , H04L27/2657
摘要： A control of an amplifier in an automatic gain control (AGC) loop, e.g. in the RF front end circuitry of an OFDM receiver, provides phase adjustment control data to an associated automatic frequency control (AFC), to compensate for a phase jump that would otherwise be caused by switching of the AGC gain between discrete gain states. In the disclosed example, for each gain state, comparators detect a signal energy estimate crossing either a high threshold or a low threshold. Upon threshold crossing, multiplexers select compensation data corresponding to the necessary transition from the prior state to the new state determined by the comparators, based on identification of the prior state and on the particular threshold that has been crossed (high or low). The phase compensation data supplied to the AFC, for one interval corresponding to the timing of the gain switching, adjusts phase rotation implemented in the AFC.
摘要翻译：自动增益控制（AGC）回路中放大器的控制，例如，在OFDM接收机的RF前端电路中，向相关联的自动频率控制（AFC）提供相位调整控制数据，以补偿否则将由离散增益状态之间的AGC增益切换引起的相位跳变。在所公开的示例中，对于每个增益状态，比较器检测穿过高阈值或低阈值的信号能量估计。在阈值交叉时，多路复用器基于先前状态的识别和已经被交叉（高或低）的特定阈值来选择对应于从比较器确定的从先前状态到新状态的必要转换的补偿数据。提供给AFC的相位补偿数据在对应于增益切换的定时的一个间隔内调整在AFC中实现的相位旋转。

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