公开(公告)号：WO2011014435A1

公开(公告)日：2011-02-03

申请号：PCT/US2010/043174

申请日：2010-07-24

Applicant: QUALCOMM INCORPORATED ,  KIM, Youngjae ,  LU, Feng ,  GOTETI, Anil, Kumar ,  SIDI, Jonathan

Inventor： KIM, Youngjae ,  LU, Feng ,  GOTETI, Anil, Kumar ,  SIDI, Jonathan

IPC: H04B17/00

CPC classification number: H04B17/3911 ,  H04B17/23

Abstract: A method for detecting a channel condition for a wireless communication device is provided. The method includes measuring a plurality of power levels as received by the wireless communication device; determining a metric based on the plurality of power level measurements; and generating a high-speed fading indication signal based on the metric. An apparatus for performing the method is also disclosed herein.

Abstract translation: 提供了一种用于检测无线通信设备的信道状况的方法。 该方法包括测量由无线通信设备接收的多个功率电平; 基于所述多个功率电平测量确定度量; 以及基于所述度量产生高速衰落指示信号。 本文还公开了一种用于执行该方法的装置。

公开(公告)号：WO2010104980A1

公开(公告)日：2010-09-16

申请号：PCT/US2010/026866

申请日：2010-03-10

Applicant: QUALCOMM INCORPORATED ,  SONG, Wei-Jei ,  PALAKODETY, Sivaram, S. ,  LU, Feng ,  KIM, Youngjae ,  GOTETI, Anil, Kumar ,  ZHANG, Danlu

Inventor： SONG, Wei-Jei ,  PALAKODETY, Sivaram, S. ,  LU, Feng ,  KIM, Youngjae ,  GOTETI, Anil, Kumar ,  ZHANG, Danlu

IPC: H03L7/107 ,  H04L27/233

CPC classification number: H04B17/309 ,  H04B17/21 ,  H04B17/336 ,  H04L2027/0024

Abstract: A wireless communications method is provided. The method includes analyzing one or more channel conditions from a wireless communication and automatically adjusting a frequency tracking loop gain or a time tracking loop gain in view of the channel conditions.

Abstract translation: 提供了一种无线通信方法。 该方法包括从无线通信分析一个或多个信道条件，并根据信道条件自动调整频率跟踪环路增益或时间跟踪环路增益。

公开(公告)号：WO2019070332A1

公开(公告)日：2019-04-11

申请号：PCT/US2018/043924

申请日：2018-07-26

Applicant: QUALCOMM INCORPORATED

Inventor： SANTHANAM, Arvind ,  HOOVER, Scott ,  MU, Yunsong ,  WANG, Yuanbo ,  XIAO, Gang ,  LIU, Haiqin ,  RAO, Subramanya ,  TANI, Taoufik ,  LU, Feng

IPC: H04W72/04

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a limit on a number of resource blocks (RBs) permitted to be used for a vehicle-to-everything (V2X) transmission by the UE; may determine, based at least in part on the limit, one or more parameters for the V2X transmission, wherein the one or more parameters include at least one of a modulation and coding scheme (MCS) for the V2X transmission, a number of transport blocks (TBs) for the V2X transmission, a number of RBs per TB for the V2X transmission, or a retransmission configuration for the V2X transmission; and may transmit the V2X transmission based at least in part on the one or more parameters. Numerous other aspects are provided.

公开(公告)号：WO2012087967A1

公开(公告)日：2012-06-28

申请号：PCT/US2011/065904

申请日：2011-12-19

Applicant: QUALCOMM Incorporated ,  DUA, Aditya ,  LU, Feng ,  SETHURAMAN, Vignesh

Inventor： DUA, Aditya ,  LU, Feng ,  SETHURAMAN, Vignesh

IPC: H04W72/12 ,  H04L1/00 ,  H04B7/06 ,  H04L5/00 ,  H04B7/04

CPC classification number: H04W72/1231 ,  H04B17/327 ,  H04B17/345 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/20 ,  H04L25/0212 ,  H04L25/0224 ,  H04W72/1284

Abstract: A method, apparatus, computer program product, and processing system for generating a channel quality indicator CQI (716) adapted according to the speed of a moving user equipment UE (534). A CQI can be generated by mapping a calculated signal-to-noise ratio SNR to a CQI value. The SNR corresponds to a signal power and a noise power of a received pilot signal. The signal power and the noise power may be generated utilizing respective infinite impulse response IIR filters (612, 614) having filter coefficients chosen in accordance with the speed at which the UE moves (608, 610). Selection of the filter coefficients can be made in accordance with a continuous function or a discontinuous function utilizing a threshold, and may utilize hysteresis.

Abstract translation: 一种用于产生根据移动用户设备UE（534）的速度适配的信道质量指示符CQI（716）的方法，装置，计算机程序产品和处理系统。 可以通过将计算的信噪比SNR映射到CQI值来生成CQI。 SNR对应于接收到的导频信号的信号功率和噪声功率。 可以使用具有根据UE移动速度（608,610）选择的滤波器系数的相应的无限脉冲响应IIR滤波器（612,614）产生信号功率和噪声功率。 可以根据使用阈值的连续函数或不连续函数来选择滤波器系数，并且可以利用滞后。

公开(公告)号：WO2012075454A1

公开(公告)日：2012-06-07

申请号：PCT/US2011/063171

申请日：2011-12-02

Applicant: QUALCOMM INCORPORATED ,  CHO, Young Geun ,  DUA, Aditya ,  LU, Feng ,  MERGEN, Gokhan ,  RAO, Subramanya P.N. ,  GUPTA, Abhinav ,  SUBRAHMANYA,, Parvathanathan

Inventor： CHO, Young Geun ,  DUA, Aditya ,  LU, Feng ,  MERGEN, Gokhan ,  RAO, Subramanya P.N. ,  GUPTA, Abhinav ,  SUBRAHMANYA,, Parvathanathan

IPC: H04L1/20

CPC classification number: H04L1/20

Abstract: Methods and apparatuses for data aided channel quality estimation using both pilot and data information are disclosed herein. In one exemplary aspect, a method for estimating channel quality in a wireless communication system is disclosed. The method comprises estimating a pilot noise variance based on a pilot signal received from a base station on a downlink and estimating a data noise variance based on a data signal received from the base station on the downlink. The method also comprises combining the pilot noise variance and the data noise variance to obtain a combined noise variance, and estimating the channel quality based on the combined noise variance.

Abstract translation: 本文公开了使用导频和数据信息的数据辅助信道质量估计的方法和装置。 在一个示例性方面，公开了一种用于估计无线通信系统中的信道质量的方法。 该方法包括基于从下行链路上的基站接收的导频信号来估计导频噪声方差，并且基于在下行链路上从基站接收的数据信号来估计数据噪声方差。 该方法还包括组合导频噪声方差和数据噪声方差以获得组合噪声方差，并且基于组合的噪声方差来估计信道质量。

公开(公告)号：WO2020076973A1

公开(公告)日：2020-04-16

申请号：PCT/US2019/055430

申请日：2019-10-09

Applicant: QUALCOMM INCORPORATED

Inventor： PARK, Cheol Hee ,  LU, Feng ,  SANTHANAM, Arvind Vardarajan ,  RAO, Subramanya ,  VEEREPALLI, Sivaramakrishna ,  TAN, Cheng ,  MASCHUE, Sean Vincent ,  IYER, Ashish Shankar ,  RAMAKRISHNAN, Giridhar ,  PATEL, Yax ,  RAJAGOPALAN, Srinivasan

IPC: H04W56/00 ,  H04W4/46

Abstract: Aspects directed towards synchronizing out of coverage (OOC) vehicle-to- everything (V2X) communications are disclosed. In one example, a scheduled entity detects a loss of a synchronization signal associated with a V2X communication by detecting when a timing uncertainty value or error value is greater than a threshold value. Packet timing information is then received in response to the loss of the synchronization signal from at least one user equipment (UE) synchronized with the synchronization signal. The scheduled entity then maintains the V2X communication by performing a timing adjustment based on the packet timing information.

公开(公告)号：WO2020006110A1

公开(公告)日：2020-01-02

申请号：PCT/US2019/039295

申请日：2019-06-26

Applicant: QUALCOMM INCORPORATED

Inventor： SHUKAIR, Mutaz ,  LU, Feng ,  AMBRISS, Mouaffac ,  BAGHEL, Sudhir Kumar

IPC: H04W4/46

Abstract: Aspects of the disclosure relate to mechanisms for a user equipment for indicating resources having limited wireless wide area network (WWAN) transmission capability. In some examples, a user equipment indicates a sidelink transmission pattern to a WWAN, receives one or more uplink transmission grants for the WWAN based on at least the sidelink transmission pattern, and transmits at least one of first data to a second user equipment on a sidelink channel based on the sidelink transmission pattern or second data to the WWAN based on the one or more uplink transmission grants. In some examples, the user equipment transmits a sidelink transmission configuration to the WWAN, the sidelink transmission configuration including one or more sidelink transmission patterns. In some examples, the user equipment selects a sidelink transmission pattern from among the one or more sidelink transmission patterns based on expected sidelink transmissions.

公开(公告)号：WO2019126669A1

公开(公告)日：2019-06-27

申请号：PCT/US2018/067139

申请日：2018-12-21

Applicant: QUALCOMM INCORPORATED

Inventor： PARK, Cheol Hee ,  IYER, Ashish Shankar ,  SANTHANAM, Arvind Vardarajan ,  SHENG, Hongsan ,  RAO, Subramanya ,  LU, Feng ,  RONGALA, Santosh Kumar ,  SHENG, Li ,  WANG, Yuanbo

IPC: H04W72/04 ,  H04W24/10

CPC classification number: H04W72/085 ,  H04B17/318 ,  H04L43/16 ,  H04W4/40 ,  H04W24/08 ,  H04W72/0486

Abstract: Aspects of the present disclosure implement techniques that allow a vehicle performing V2X communications to provide more accurate S-RSSI measurements and CBR calculations for use in channel selection and congestion control. Techniques may include measuring a sidelink received signal strength indicator (S-RSSI) for each of a plurality of sub-channels, determining one or more signal impairment adjustment factors based on the S-RSSI for each of the plurality of sub-channels, calculating a channel busy ratio (CBR) for the plurality of sub-channels based on the one or more signal impairment adjustment factors, and initiating communication with at least one of the plurality of sub-channels based on at least the CBR.

公开(公告)号：WO2019104009A1

公开(公告)日：2019-05-31

申请号：PCT/US2018/061963

申请日：2018-11-20

Applicant: QUALCOMM INCORPORATED

Inventor： PARK, Cheol Hee ,  SANTHANAM, Arvind ,  LU, Feng ,  TANI, Taoufik ,  CHRISTOL, Thomas ,  MU, Yunsong ,  WANG, Yuanbo ,  XIAO, Gang ,  NAVALEKAR, Abhijit ,  IYER, Ashish ,  RAO, Subramanya ,  RAJAGOPALAN, Srinivasan

IPC: H04W72/04 ,  H04W72/12

Abstract: A method, apparatus, and computer-readable medium at a transmitting user equipment (UE) in a distributed cellular vehicle-to-everything environment are disclosed to determine a schedule for transmissions on subchannels of multiple frequencies based on a set of UE-specific, dynamic, and performance related metrics or criteria. The metrics may include an estimated number of users on a subchannel, a best-bandwidth fit, channel loading conditions, transmission range, and quality requirements of an application, among others. Such a schedule for transmissions on subchannels of multiple frequencies may result in either an improved capacity utilization, an improved communication quality, or both.

公开(公告)号：WO2016064574A1

公开(公告)日：2016-04-28

申请号：PCT/US2015/054328

申请日：2015-10-06

Applicant: QUALCOMM INCORPORATED

Inventor： ZHANG, Wei ,  XIE, Guang ,  RAYAPATI, Hemanth Kumar ,  LU, Feng ,  CHIZGI, Nate

IPC: H04B1/7117

CPC classification number: H04B1/7117 ,  H04B2201/70702 ,  H04B2201/709781

Abstract: Methods and apparatus for wireless communications are described. A method of wireless communications includes determining an energy for a first signal received at a first finger of a rake receiver after a reference signal is received at a second finger of the rake receiver, determining an energy for a second signal received at a third finger of a rake receiver before the reference signal is received at the second finger of the rake receiver, and selecting the first signal as a new reference signal when the energy of the first signal exceeds the energy of the second signal by a predefined threshold amount. In another aspect, a method includes assigning a signal received at a rake receiver to a finger of the rake receiver, and deassigning the finger if the signal has an energy level below a preselected lock threshold energy for a predefined time.

Abstract translation: 描述用于无线通信的方法和装置。 一种无线通信方法包括：在rake接收机的第二个手指接收到参考信号之后，确定在rake接收机的第一个手指处接收的第一个信号的能量，确定在第三个手指处接收到的第二个信号的能量 在前置雷达接收机的第二个手指接收参考信号之前的前置接收机，并且当第一信号的能量超过第二信号的能量预定的阈值量时，选择第一信号作为新的参考信号。 在另一方面，一种方法包括将在瑞克接收机处接收的信号分配给瑞克接收机的手指，以及如果信号在预定义时间内具有低于预先选择的锁定阈值能量的能级，则解除指配。