公开(公告)号：WO2009099903A1

公开(公告)日：2009-08-13

申请号：PCT/US2009/032503

申请日：2009-01-29

Applicant: QUALCOMM INCORPORATED ,  YAN, Hongbo ,  FILIPOVIC, Daniel Fred

Inventor： YAN, Hongbo ,  FILIPOVIC, Daniel Fred

IPC: G06F17/50

CPC classification number: H03L1/022

Abstract: Techniques are disclosed for estimating a frequency of a crystal oscillator based on temperature. In an embodiment, the oscillator frequency is computed using a polynomial approximation. Techniques are disclosed for deriving and periodically updating the coefficients used in the polynomial approximation.

Abstract translation: 公开了用于基于温度估计晶体振荡器的频率的技术。 在一个实施例中，使用多项式近似计算振荡器频率。 公开了用于导出和周期性地更新在多项式近似中使用的系数的技术。

公开(公告)号：EP3008832B1

公开(公告)日：2020-08-26

申请号：EP14737098.5

申请日：2014-06-10

Applicant: Qualcomm Incorporated

Inventor： YAN, Hongbo ,  KANG, Insung ,  FILIPOVIC, Daniel Fred ,  FAN, Michael Mingxi ,  HE, Ning ,  LIU, Minkui

IPC: H04B7/06 ,  H04B7/0404 ,  H04W52/42 ,  H04B7/26

公开(公告)号：EP3120462A1

公开(公告)日：2017-01-25

申请号：EP15712773.9

申请日：2015-03-13

Applicant: Qualcomm Incorporated

Inventor： YAN, Hongbo ,  NGAI, Francis Ming-Meng ,  FILIPOVIC, Daniel Fred ,  HE, Ning

IPC: H04B1/403 ,  H04B7/08

CPC classification number: H04B7/0814 ,  H04B1/406 ,  H04B7/0608 ,  H04B7/0805 ,  H04W88/06

Abstract: A wireless device includes: a first radio and first transceiver configured to transmit and receive according to a first radio access technology; a second radio and second transceiver configured to transmit and receive according to a second radio access technology; a first antenna and a second antenna connected to the first radio and the second radio; a switch; and a control unit configured to control the switch to configure connections of the first and second antennas to the first and second radios. The control unit is configured to control the switch to disconnect the second radio from the second antenna in response to a receiving, by the second radio through the second antenna, a signal that is below a predetermined threshold, and to connect the second radio to the first antenna during a wakeup period of the second radio.

Abstract translation: 无线设备包括：第一无线电和第一收发机，被配置为根据第一无线电接入技术进行发送和接收; 第二无线电和第二收发机，被配置为根据第二无线电接入技术进行发送和接收; 连接到第一无线电和第二无线电的第一天线和第二天线; 开关 以及控制单元，被配置为控制所述开关以配置所述第一和第二天线与所述第一和第二无线电的连接。 控制单元被配置为响应于由第二无线电通过第二天线接收低于预定阈值的信号并且将第二无线电与第二无线电连接到第二无线电 在第二无线电的唤醒周期期间的第一天线。

公开(公告)号：EP3039797A1

公开(公告)日：2016-07-06

申请号：EP14762198.1

申请日：2014-08-28

Applicant: Qualcomm Incorporated

Inventor： YAN, Hongbo ,  NGAI, Francis Ming-Meng ,  MOHSENI, Jafar ,  FILIPOVIC, Daniel Fred

IPC: H04B7/08 ,  H04B7/06

CPC classification number: H04B7/0868 ,  H04B7/0602 ,  H04B7/0817

Abstract: Systems and methods for antenna selection in a wireless terminal with two radios are provided. Signals received using first and second antennas are demodulated by first and second modems according to first and second protocols. A receive path between the second antenna and the second modem can be controlled to receive signals according to the first protocol. A performance measure of demodulating, according to the first protocol, a signal received using the second antenna is determined. The performance measure may be determined using a mirror module in the second modem or using a search module in the first modem. The wireless terminal switches antennas so that the first modem demodulates a signal received using the second antenna, if the performance measure for using the second antenna is such that the switch would improve performance of the first modem.

Abstract translation: 提供了具有两个无线电的无线终端天线选择的系统和方法。 使用第一和第二天线接收的信号由第一和第二调制解调器根据第一和第二协议进行解调。 可以控制第二天线和第二调制解调器之间的接收路径，以便根据第一协议接收信号。 根据第一协议解调使用第二天线接收的信号的性能测量被确定。 性能测量可以使用第二调制解调器中的镜像模块或使用第一调制解调器中的搜索模块来确定。 无线终端切换天线，使得第一调制解调器解调使用第二天线接收的信号，如果使用第二天线的性能测量使得交换机将改善第一调制解调器的性能。

公开(公告)号：EP2215714A1

公开(公告)日：2010-08-11

申请号：EP08844510.1

申请日：2008-10-29

Applicant: QUALCOMM Incorporated

Inventor： YAN, Hongbo ,  FILIPOVIC, Daniel Fred

IPC: H03B5/04 ,  H03B5/36

CPC classification number: H03B5/04 ,  H03B5/36

Abstract: Method and apparatus for generating a temperature compensated frequency estimate for a crystal oscillator, wherein the temperatures of the crystal and oscillator are both accounted for. A crystal temperature measurement is used to generate a first frequency component. The difference between the oscillator temperature measurement and a second temperature is scaled, and used to generate a second frequency component. The first and second frequency components may be summed to produce a frequency estimate for the crystal oscillator. In an embodiment, the computations may be performed in the slope domain.

公开(公告)号：EP3008832A2

公开(公告)日：2016-04-20

申请号：EP14737098.5

申请日：2014-06-10

Applicant: Qualcomm Incorporated

Inventor： YAN, Hongbo ,  KANG, Insung ,  FILIPOVIC, Daniel Fred ,  FAN, Michael Mingxi ,  HE, Ning ,  LIU, Minkui

IPC: H04B7/06 ,  H04B7/04 ,  H04W52/42

Abstract: TDD devices may transmit using multiple antennas. First and second antennas having first and second receive conditions may receive a communication. In an aspect, first and second transmit conditions for the first and second antennas may be determined based on the first and second receive conditions. In an aspect, the first and second transmit conditions may be compared to select the first or second antenna for transmissions. In an aspect, the first and second receive conditions may be compared to select the first or second antenna for transmissions. In an aspect, first and second transmission conditioning values, which may determine transmission powers, may be determined based on the first and second receive conditions. A first transmission chain, associated with an active RAT or carrier, and a second transmission chain, associated with an inactive RAT or carrier, may be activated to send transmissions from the first and second antennas.

公开(公告)号：EP2907236A1

公开(公告)日：2015-08-19

申请号：EP13783758.9

申请日：2013-10-11

Applicant: Qualcomm Incorporated

Inventor： GENG, Jifeng ,  FILIPOVIC, Daniel Fred

IPC: H03F1/02 ,  H03F1/32 ,  H04L27/36 ,  H03F3/24

CPC classification number: H04L1/0033 ,  H03F1/025 ,  H03F1/3247 ,  H03F1/3288 ,  H03F3/24 ,  H03F2200/321 ,  H03F2200/336 ,  H04L27/368

Abstract: Aspects disclosed herein relate to predicting one or more signal characteristics to improve efficiency for a PA. A wireless communications device may be include a power amplifier and a processor that is associated with a signal prediction module. In an aspect, the processor may be a modem, a RF chip, etc. In one example, the wireless communications device may be configured to buffer one or more values associated with an input signal. The signal prediction module may be configured to predict a system response to at least a portion of the one or more buffered values, and generate a switcher control signal based on the system response. The signal prediction module may also generate a predicted supply voltage from the values associated with the input signal.

Abstract translation: 方面盘在游离缺失涉及预测一个或多个信号特性，提高了PA的效率。 一种无线通信设备可以是包括功率放大器和处理器也与信号预测模块相关联。 在一个方面中，处理器可为调制解调器，RF芯片等。在一个实施例中，无线通信设备可以被配置为缓冲在与输入信号相关联的一个或多个值。 信号预测模块可以被配置为预测的系统响应于所述一个或多个缓冲值中的至少一部分，并生成基于所述系统响应一个切换控制信号。 因此，该信号预测模块可以生成从与所述输入信号相关联的值的预测电源电压。

公开(公告)号：EP2867700A1

公开(公告)日：2015-05-06

申请号：EP13734636.7

申请日：2013-06-27

Applicant: Qualcomm Incorporated

Inventor： WU, Jie ,  FILIPOVIC, Daniel Fred ,  SIMIC, Emilija Milorad ,  AGARWAL, Vishal

IPC: G01S19/23

CPC classification number: H04W56/00 ,  G01S19/235 ,  H03L1/022

Abstract: Systems and methods for temperature-calibration of an uncompensated XO in a mobile device during mobile device operation. The XO is temperature-calibrated based on assistance from wireless signals, such as from satellite source, and optionally from terrestrial sources such as WWAN, CDMA, etc. Based on one or more received wireless signals received at a receiver, corresponding frequency estimates of the XO are obtained and correlated with corresponding operating temperatures in a processor. Based on one or more samples of frequency estimates and associated temperatures, the XO is temperature-calibrated in the processor wherein a frequency-temperature (FT) model is formulated for the XO. The frequency of the temperature-calibrated XO can be determined from the FT model at any given temperature.

公开(公告)号：EP2853039A1

公开(公告)日：2015-04-01

申请号：EP13727727.3

申请日：2013-05-20

Applicant: Qualcomm Incorporated

Inventor： YAN, Hongbo ,  FILIPOVIC, Daniel Fred

IPC: H04B7/04 ,  H04B7/06 ,  H04B7/08

CPC classification number: H01Q3/24 ,  H04B1/44 ,  H04B7/0404 ,  H04B7/0602 ,  H04B7/0608 ,  H04B7/0802 ,  H04B7/0814 ,  H04W24/02 ,  H04W36/14 ,  H04W36/30 ,  H04W72/085 ,  H04W76/18 ,  H04W88/06

Abstract: This disclosure provides systems, methods, and apparatus for an initial network acquisition process via multiple antennas. In one aspect a method of establishing communications via a wireless network at a wireless communications apparatus is provided. The method includes attempting an initial acquisition process, over one or more frequencies, for establishing communications over the wireless network via a transmit circuit and a receive circuit transmitting and receiving via a first antenna. The method further includes switching the transmit circuit and the receive circuit from transmitting and receiving via the first antenna to a second antenna in response to detecting failure of the initial acquisition process. The switching is independent of a performance metric of the first or the second antenna. The method further includes re-attempting the initial acquisition process based on the switching to the second antenna over the one or more frequencies.

公开(公告)号：EP2567470A2

公开(公告)日：2013-03-13

申请号：EP11721866.9

申请日：2011-05-03

Applicant: Qualcomm Incorporated

Inventor： MOHANTY, Bibhu Prasad ,  SAMBHWANI, Sharad Deepak ,  ZHANG, Chengjin ,  FILIPOVIC, Daniel Fred ,  AGARWAL, Ravi ,  HOU, Jilei ,  KAPOOR, Rohit

IPC: H04B7/06

CPC classification number: H04B7/0689 ,  H04B7/0602 ,  H04B7/0617

Abstract: In a communication system, user equipment (UE) conditionally performs uplink transmit diversity (ULTD) either by Switched Antenna Transmit Diversity (SATD) or Beamforming Transmit Diversity (BFTD) using a first antenna and a second antenna. Either a serving node or the UE determines that uplink transmit diversity is conditionally authorized. Either a serving node or the UE measures a value. The UE transmits using ULTD in response to determining that an enabling condition based on the value is satisfied. The UE can also disable uplink transmit diversity in response to determining that a disabling condition based on the value is satisfied. The disabling condition comprises a disabling threshold that equals the enabling condition comprising an enabling threshold with a threshold adjustment for hysteresis.