公开(公告)号：US10587298B1

公开(公告)日：2020-03-10

申请号：US16117352

申请日：2018-08-30

Applicant: QUALCOMM Incorporated

Inventor： Hongbo Yan ,  Junsheng Han ,  Raghu Narayan Challa

IPC: H04B1/3827 ,  H04L1/00 ,  H04L1/18 ,  H04W52/26 ,  H04W28/06 ,  H04W52/22 ,  H04W52/24

Abstract: Techniques for providing transmission throttling for emission exposure management are described. Embodiments implement duty cycle based transmission throttling for emission exposure management. Transmission throttling implemented in accordance with embodiments drops or skips transmission of some portion of transmission blocks of a communication process, such as to drop some transmission blocks providing retransmission of data. Transmit power levels utilized with respect to each of transmission blocks transmitted may be closer to that of a transmit power control target level (e.g., meeting the TPC target level) while nevertheless meeting an emission exposure limit level. Embodiments may, for example, be implemented with respect to a hybrid automatic repeat request (HARQ) process. Other aspects and features are also claimed and described.

公开(公告)号：US10462806B2

公开(公告)日：2019-10-29

申请号：US15841211

申请日：2017-12-13

Applicant: QUALCOMM Incorporated

Inventor： Jun Zhu ,  Raghu Narayan Challa

IPC: H04W72/12 ,  H04W72/02 ,  H04W72/04 ,  H04B7/0408 ,  H04W72/00 ,  H04B7/06 ,  H04B7/08 ,  H04W72/08

Abstract: The choice of a transmit (Tx)-Receive (Rx) beam pair out of many available beam pairs between a base station and a millimeter wave (mmW)-capable UE is directly related to the performance of transmission between the base station and the UE. A method, apparatus, and computer-readable medium at a transmitting user equipment (UE) capable of (mmW) communication are disclosed to determine a new serving Tx-Rx beam pair based on cumulative strengths of a plurality of Tx-Rx beam pairs. The UE may iteratively perform a process of, until a predetermined number of synchronization cycles is reached: selecting one of the plurality of Transmit (Tx)-Receive (Rx) beam pairs based at least in part on a scheduling opportunity value of the selected Tx-Rx beam pair that has not been measured for a current synchronization period; and measuring a strength of the selected Tx-Rx beam pair.

公开(公告)号：US10440682B2

公开(公告)日：2019-10-08

申请号：US15841182

申请日：2017-12-13

Applicant: QUALCOMM Incorporated

Inventor： Jun Zhu ,  Raghu Narayan Challa ,  Alexei Yurievitch Gorokhov ,  Junyi Li ,  Assaf Touboul

IPC: H04W72/02 ,  H04W72/10 ,  H04B7/0408 ,  H04B7/06 ,  H04W72/08

Abstract: The choice of a transmit (Tx)-Receive (Rx) beam pair out of many available beam pairs between a base station and a millimeter wave (mmW)-capable UE is directly related to the performance of transmission between the base station and the UE. A method, apparatus, and computer-readable medium at a transmitting user equipment (UE) capable of (mmW) communication are disclosed to determine a new serving Tx-Rx beam pair based on priorities of the plurality of Tx-Rx beam pairs. The UE may select a Transmit (Tx)-Receive (Rx) beam pair from a plurality of Tx-Rx beam pairs available at the UE for measurement, based in part on a priority of the Tx-Rx beam pair, and update the priority of the selected Tx-Rx beam pair based in part on a combination of static information and dynamic information of the selected Tx-Rx beam pair.

公开(公告)号：US09232478B2

公开(公告)日：2016-01-05

申请号：US13781394

申请日：2013-02-28

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Raghu Narayan Challa ,  Hisham A. Mahmoud

IPC: H04L1/00 ,  H04W52/18 ,  H04W52/14 ,  H04W48/16 ,  H04B17/10

CPC classification number: H04W52/18 ,  H04B17/101 ,  H04W48/16 ,  H04W52/143

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in which a set of time intervals is obtained from a received radio frequency signal. A power profile is determined for a frequency spectrum segment in each time interval. A first list is used to identify frequency spectrum segments that exhibit a power or energy profile over a range of frequencies associated with a downlink channel bandwidth, and a second list is used to identify frequency spectrum segments that have a total or average energy greater than a threshold energy relative to a noise floor. An absolute radio frequency channel number (ARFCN) of a wireless communication system is determined based on the time intervals identified in the first and second lists.

Abstract translation: 提供一种用于无线通信的方法，装置和计算机程序产品，其中从接收的射频信号获得一组时间间隔。 在每个时间间隔内为频谱段确定功率曲线。 第一列表用于识别在与下行链路信道带宽相关联的频率范围上呈现功率或能量分布的频谱段，并且第二列表用于识别具有大于或等于的总频谱或平均能量的频谱段 相对于本底噪声的阈值能量。 基于在第一和第二列表中识别的时间间隔来确定无线通信系统的绝对射频信道号（ARFCN）。

公开(公告)号：US20130122841A1

公开(公告)日：2013-05-16

申请号：US13670580

申请日：2012-11-07

Applicant: Qualcomm Incorporated

Inventor： Shivratna Giri Srinivasan ,  Raghu Narayan Challa ,  Supratik Bhattacharjee ,  Brian Clarke Banister

IPC: H04W56/00

CPC classification number: H04W56/00 ,  H04B1/7083 ,  H04J11/0069 ,  H04L27/2663

Abstract: Methods and apparatus for determining a reference sequence and timing based on normalized correlations are described. One example method generally includes receiving, at a first antenna of an apparatus, a first signal comprising a reference sequence; receiving, at a second antenna of the apparatus, a second signal comprising the same reference sequence; sampling the first and second signals to form first and second signal sequences; correlating the first and second signal sequences with each of one or more candidate sequences for the reference sequence using normalization; and determining the reference sequence and timing for the first and second signals based on the normalized correlations.

Abstract translation: 描述了基于归一化相关性来确定参考序列和定时的方法和装置。 一个示例性方法通常包括在装置的第一天线处接收包括参考序列的第一信号; 在装置的第二天线处接收包括相同参考序列的第二信号; 对第一和​​第二信号进行采样以形成第一和第二信号序列; 使用归一化将第一和第二信号序列与用于参考序列的一个或多个候选序列中的每一个相关; 以及基于所述归一化相关性来确定所述第一和第二信号的参考序列和定时。

公开(公告)号：US12289713B2

公开(公告)日：2025-04-29

申请号：US17350794

申请日：2021-06-17

Applicant: QUALCOMM Incorporated

Inventor： Mahbod Ghelichi ,  James Francis Geekie ,  Raghu Narayan Challa ,  Mihir Vijay Laghate ,  Ruhua He ,  Yong Li

IPC: H04W72/0453 ,  G01K3/00 ,  H04W72/51 ,  H04W72/541 ,  H04W88/02

Abstract: In some aspects, the present disclosure provides methods, apparatuses, and systems for efficient thermal mitigation while maintaining wireless device performance on a primary component carrier (PCC). Embodiments described may include implementation of target transceiver module configurations, where bandwidth (e.g., PCC bands and secondary component carrier (SCC) bands) may be monitored by a wireless device based on intra-module target configurations and/or inter-module target configurations. An intra-module target configuration may include a target transceiver module monitoring both PCC bands and SCC bands. An inter-module target configuration may include or refer to a plurality of target transceiver modules together monitoring PCC bands and SCC bands. In scenarios where operating temperatures exceed temperature thresholds, target transceiver module configurations may be implemented to transition PCC bands, SCC bands, or both, from a PCC-resident transceiver module to another transceiver module to reduce the operating temperatures of concern. Various additional and alternative aspects are described herein.

公开(公告)号：US12218719B2

公开(公告)日：2025-02-04

申请号：US18177728

申请日：2023-03-02

Applicant: QUALCOMM Incorporated

Inventor： Kang Gao ,  Jun Zhu ,  Raghu Narayan Challa

IPC: H04B7/0426 ,  H04B7/08

Abstract: A UE may identify a channel correlation matrix for a channel between the UE and a network node. The UE may identify whether the channel is associated with an LOS condition based on the channel correlation matrix. The UE may obtain a plurality of eigenvalues of the channel correlation matrix based on an eigen decomposition operation on the channel correlation matrix. The UE may identify whether the channel is associated with the LOS condition based on the plurality of eigenvalues of the channel correlation matrix. The UE may identify that the channel is associated with the LOS condition if a difference between a greatest eigenvalue in the plurality of eigenvalues and an average of other eigenvalues in the plurality of eigenvalues is greater than a threshold. Otherwise, the UE may identify that the channel is not associated with the LOS condition.

公开(公告)号：US12200609B2

公开(公告)日：2025-01-14

申请号：US17439366

申请日：2019-11-22

Applicant: QUALCOMM Incorporated

Inventor： Jun Zhu ,  Mihir Vijay Laghate ,  Raghu Narayan Challa

IPC: H04W48/16 ,  H04W24/10 ,  H04W56/00 ,  H04W72/04 ,  H04W72/044 ,  H04W36/30

Abstract: Aspects of the present disclosure provide a method for wireless communication at a user equipment (UE). The method includes selecting, for each of a plurality of periodic search opportunities, one receive beam of a plurality of receive beams for receiving at least one synchronization signal. The plurality of periodic search opportunities includes a plurality of regular search opportunities and a plurality of prioritized search opportunities. The plurality of receive beams includes at least one prioritized receive beam and at least one additional receive beam. The selecting includes selecting from the at least one prioritized receive beam for each of the plurality of prioritized search opportunities; and selecting from the plurality of receive beams for each of the plurality of regular search opportunities. The method further includes receiving, at each of the plurality of periodic search opportunities, the corresponding at least one synchronization signal using the corresponding selected receive beam.

公开(公告)号：US12096376B2

公开(公告)日：2024-09-17

申请号：US17695705

申请日：2022-03-15

Applicant: QUALCOMM Incorporated

Inventor： Farhad Meshkati ,  Raghu Narayan Challa ,  Tienyow Liu

IPC: H04W52/14 ,  H04W52/30

CPC classification number: H04W52/146 ,  H04W52/30

Abstract: Methods, systems, and devices for wireless communications are described that support techniques for transmission power determination for radio frequency (RF) exposure compliance. A transmitting device, such as a user equipment (UE) may determine an uplink transmit power limit for a time window based on an RF limit and a duration of the time window. The device may use the power limit to determine an uplink transmit power based on a computed uplink transmission period for the time window that accounts for a time period during which the device is expected to actually transmit. The computed uplink transmission period may be based on one or more actual uplink transmission periods during one or more prior time windows, a predictive model, network signaling, or any combinations thereof. The device may transmit one or more uplink transmissions during the time window using the determined uplink transmit power.

公开(公告)号：US12063524B2

公开(公告)日：2024-08-13

申请号：US18308871

申请日：2023-04-28

Applicant: QUALCOMM Incorporated

Inventor： Mihir Vijay Laghate ,  Mingming Cai ,  Raghu Narayan Challa ,  Michael Burke ,  Revathi Sundara Raghavan ,  Siddharth Kamath

IPC: H04W16/28 ,  H04B7/0408 ,  H04B7/0456 ,  H04B7/06 ,  H04W24/10

CPC classification number: H04W16/28 ,  H04B7/0408 ,  H04B7/0469 ,  H04B7/0617 ,  H04W24/10

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a UE may communicate via a serving beam set of the UE, the serving beam set being one or more of a plurality of beams. The UE may measure another beam set in accordance with a measurement schedule configured to prioritize measurement on one or more adjacent beam sets associated with the serving beam set over one or more non-adjacent beam sets associated with the serving beam set. In some aspects, the one or more adjacent beam sets may be associated with one or more coverage areas that at least partially overlap a coverage area of the serving beam set, are adjacent to the coverage area of the serving beam set, or are associated with a measurement value that satisfies a threshold in the coverage area of the serving beam set. Numerous other aspects are provided.