公开(公告)号：SG11202100152RA

公开(公告)日：2021-03-30

申请号：SG11202100152R

申请日：2019-07-19

Applicant: QUALCOMM INC

Inventor： LU FENG ,  PARK CHEOL HEE ,  TAN CHENG ,  SIMMONS EDMUND VICTOR ,  MASCHUE SEAN VINCENT ,  VEEREPALLI SIVARAMAKRISHNA ,  SANTHANAM ARVIND VARDARAJAN ,  RAO SUBRAMANYA

IPC: H04B7/04 ,  H04B7/06

Abstract: This disclosure discloses various vehicle-to-everything (V2X) wireless communication processes that use switching diversity to improve coverage over that of a single transmit antenna. Switching diversity may be implemented by alternating the transmit antennas according to a certain switching pattern. A V2X device determines a pattern for alternating a plurality of antennas for transmitting data packets. The V2X device selects, based on the pattern, a first antenna of the plurality of antennas, and transmit a first packet of the data packets using the first antenna. The V2X device further select, based on the pattern, a second antenna of the plurality of antennas, and transmit a second packet of the data packets using the second antenna.

公开(公告)号：CA3074560A1

公开(公告)日：2019-04-11

申请号：CA3074560

申请日：2018-07-26

Applicant: QUALCOMM INC

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：SG11202102223WA

公开(公告)日：2021-04-29

申请号：SG11202102223W

申请日：2019-10-09

Applicant: QUALCOMM INC

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：WO2010033704A3

公开(公告)日：2010-11-04

申请号：PCT/US2009057321

申请日：2009-09-17

Applicant: QUALCOMM INC ,  CUI TAO ,  LU FENG ,  GOTETI ANIL KUMAR ,  SETHURAMAN VIGNESH ,  RAO SUBRAMANYA P ,  SUBRAHMANYA PARVATHANATHAN

Inventor： CUI TAO ,  LU FENG ,  GOTETI ANIL KUMAR ,  SETHURAMAN VIGNESH ,  RAO SUBRAMANYA P ,  SUBRAHMANYA PARVATHANATHAN

IPC: H04L1/20 ,  H04L1/00

CPC classification number: H04W28/0236 ,  H04L1/0026 ,  H04L1/203 ,  H04W28/0205

Abstract: A method for optimizing throughput in a wireless communication system is disclosed. A target metric is estimated based on previous acknowledgment data. A channel quality indicator offset is determined based on the target metric. A channel quality indicator is adjusted based on the channel quality indicator offset. The channel quality indicator indicates the quality of a wireless transmission channel.

Abstract translation: 公开了一种用于优化无线通信系统中的吞吐量的方法。 目标度量基于先前的确认数据进行估计。 信道质量指标偏移量是基于目标度量确定的。 信道质量指标根据信道质量指标偏移进行调整。 信道质量指示符指示无线传输信道的质量。

公开(公告)号：WO2010028351A2

公开(公告)日：2010-03-11

申请号：PCT/US2009056206

申请日：2009-09-08

Applicant: QUALCOMM INC ,  CUI TAO ,  LU FENG ,  SETHURAMAN VIGNESH ,  RAO SUBRAMANYA P ,  SUBRAHMANYA PARVATHANATHAN ,  GOTETI ANIL KUMAR

Inventor： CUI TAO ,  LU FENG ,  SETHURAMAN VIGNESH ,  RAO SUBRAMANYA P ,  SUBRAHMANYA PARVATHANATHAN ,  GOTETI ANIL KUMAR

IPC: H04W16/04

CPC classification number: H04L1/0026

Abstract: Various embodiments are disclosed which predict the channel quality indicator (CQI) in High Speed Downlink Packet Access (HSDPA). The accuracy of CQI is crucial for HSDPA performance. In some HSDPA systems the CQI may be as much as three (3) subframes stale. Accordingly, the prediction of CQI values is required in order to efficiently schedule data for transmission over the communication channel. Various embodiments disclose first order adaptive IIR filters which are significantly less complex than the finite impulse response (FIR) counterparts and achieve similar accuracy. By minimizing the mean squared error (MSE), an exact gradient descent algorithm may be used as well as two embodiment pseudolinear regression algorithms.

Abstract translation: 公开了预测高速下行链路分组接入（HSDPA）中的信道质量指示符（CQI）的各种实施例。 CQI的准确性对于HSDPA性能至关重要。 在一些HSDPA系统中，CQI可能多达三（3）个子帧陈旧。 因此，为了有效地调度用于在通信信道上传输的数据，需要预测CQI值。 各种实施例公开了一阶自适应IIR滤波器，其比有限脉冲响应（FIR）对应物复杂得多，并且实现类似的精度。 通过最小化均方误差（MSE），可以使用精确的梯度下降算法以及两个实施例的伪线性回归算法。

公开(公告)号：WO2012074845A1

公开(公告)日：2012-06-07

申请号：PCT/US2011061894

申请日：2011-11-22

Applicant: QUALCOMM INC ,  DUA ADITYA ,  LU FENG

Inventor： DUA ADITYA ,  LU FENG

IPC: H04B7/08

CPC classification number: H04B7/0877 ,  H04L5/0023 ,  H04L25/03891 ,  H04L2025/03414

Abstract: An apparatus and method for mitigation of receive power imbalance including estimating input power levels on two diversity receive branches in a receiver; computing a power imbalance between the two diversity receive branches and determining a weaker receive branch; setting a weakRX parameter based on the weaker receive branch; computing an intercept parameter c0 for a switching curve based on the weakRX parameter; computing a threshold T based on the intercept parameter; and determining a switching decision for the receiver based on the threshold T.

Abstract translation: 一种用于减轻接收功率不平衡的设备和方法，包括：估计接收机中两个分集接收支路上的输入功率电平; 计算两个分集接收分支之间的功率不平衡并确定较弱的接收分支; 根据较弱的接收分支设置weakRX参数; 基于weakRX参数计算切​​换曲线的截距参数c0; 基于截距参数来计算阈值T; 并基于阈值T确定接收机的切换决定。

公开(公告)号：WO2010045485A3

公开(公告)日：2010-06-10

申请号：PCT/US2009060885

申请日：2009-10-15

Applicant: QUALCOMM INC ,  GOTETI ANIL KUMAR ,  BUTALA AMIT ,  LU FENG ,  VENKATACHARI HARISH

Inventor： GOTETI ANIL KUMAR ,  BUTALA AMIT ,  LU FENG ,  VENKATACHARI HARISH

IPC: H04W72/12

CPC classification number: H04W72/1268 ,  Y02D70/12

Abstract: A wireless user equipment device transmits a control channel and a data channel. Each of the control channel and the data channel include a plurality of time slots. The control channel is configured to transmit control information and includes both transmission time slots and non-transmission time slots. The data channel is configured to transmit data packets. The device further includes a processor configured to schedule at least one data packet for transmission in at least one data channel time slot that is concurrent to at least one control channel transmission time slot, and a transmission module configured to transmit the at least one data packet in the at least one data channel time slot that is concurrent to the at least one control channel transmission time slot.

Abstract translation: 无线用户设备装置发送控制信道和数据信道。 每个控制信道和数据信道都包括多个时隙。 控制信道被配置为发送控制信息并且包括发送时隙和非发送时隙两者。 数据通道配置为传输数据包。 该设备还包括处理器，该处理器被配置为调度至少一个数据分组以便在与至少一个控制信道传输时隙并行的至少一个数据信道时隙中传输，以及传输模块，被配置为传输至少一个数据分组 在与所述至少一个控制信道传输时隙同时发生的所述至少一个数据信道时隙中。

公开(公告)号：WO2010008830A2

公开(公告)日：2010-01-21

申请号：PCT/US2009048263

申请日：2009-06-23

Applicant: QUALCOMM INC ,  LU FENG ,  SRIPATHI PRASHANT UDUPA ,  ZHAO LIANG ,  SUBRAHMANYA PARVATHANATHAN ,  RAO SUBRAMANYA P

Inventor： LU FENG ,  SRIPATHI PRASHANT UDUPA ,  ZHAO LIANG ,  SUBRAHMANYA PARVATHANATHAN ,  RAO SUBRAMANYA P

IPC: H04B1/10

CPC classification number: H04W52/245 ,  H04B17/345 ,  H04L1/0026 ,  H04L1/20 ,  H04W52/241 ,  H04W52/243

Abstract: System(s) and method(s) are provided for generating phase-noise resilient channel quality indicator(s). A pilot signal utilized to determine a channel quality indicator is rotated to be aligned to a phase reference signal. Separate noise evaluations in quadrature and in-phase directions are utilized, at least in part, to generate a net noise estimate that is phase-noise compensated or resilient. For example, various combination schemes of quadrature and in-phase noise evaluations can be exploited to generate a net noise estimate, the schemes include weighted average of in-phase and quadrature noise estimates and running averages thereof. Simulation of net noise estimates as a function of geometry conditions reveal that the combination schemes provide substantive mitigation of phase-noise, thus making CQI generation phase-noise resilient.

Abstract translation: 提供了用于产生相位噪声弹性信道质量指示符的系统和方法。 用于确定信道质量指示符的导频信号被旋转以与相位参考信号对准。 至少部分地利用正交和同相方向上的独立噪声评估来产生相位噪声补偿或弹性的净噪声估计。 例如，可以利用正交和同相噪声评估的各种组合方案来产生净噪声估计，该方案包括同相和正交噪声估计的加权平均值及其运行平均值。 作为几何条件的函数的净噪声估计的模拟表明，组合方案提供了相位噪声的实质性减轻，从而使得CQI生成相位噪声具有弹性。