公开(公告)号：US20180288624A1

公开(公告)日：2018-10-04

申请号：US15937212

申请日：2018-03-27

Applicant: QUALCOMM Incorporated

Inventor： Wenshu ZHANG ,  Chengjin ZHANG ,  Alexei Yurievitch GOROKHOV ,  Amir AMINZADEH GOHARI ,  Yongle WU ,  Supratik BHATTACHARJEE

IPC: H04W16/14 ,  H04L5/00 ,  H04W48/16 ,  H04L27/26

Abstract: Aspects of the present disclosure provide a plurality of discovery reference signal (DRS) search modes implemented by the user equipment (UE) during contention-based communication in an unlicensed spectrum. The plurality of DRS search modes may include a first DRS search mode (“Full search mode”), second DRS search mode (“Comb search mode”), and a third DRS search mode (“Thin search mode”). The DRS search modes may be selected by the UE based on the system requirements (e.g., tradeoffs between robustness and complexity against cycle cost). Features of the present disclosure further provide techniques for dynamically switching between the plurality of DRS search modes in order to minimize power consumption while reducing the number of cycles required to locate the DRS.

公开(公告)号：US20240430799A1

公开(公告)日：2024-12-26

申请号：US18666463

申请日：2024-05-16

Applicant: QUALCOMM Incorporated

Inventor： Nicolas GRAUBE ,  Tingting LIU ,  Chengjin ZHANG

IPC: H04W52/02 ,  H04W56/00

Abstract: Disclosed are systems, apparatuses, processes, and computer-readable media for wireless communications. For example, a wireless communication device can receive an energizing signal from an energizer and can harvest energy from the energizing signal. The wireless communication device can synchronize, based on one of the energizing signal or a beacon signal, timing for a timing schedule associated with the wireless communication device. The wireless communication device can transmit a signal according to the timing schedule associated with the wireless communication device.

公开(公告)号：US20180007575A1

公开(公告)日：2018-01-04

申请号：US15635547

申请日：2017-06-28

Applicant: QUALCOMM Incorporated

Inventor： Vaibhav SINGHAL ,  Heechoon LEE ,  Alexei Yurievitch GOROKHOV ,  Sarabjot Singh KHANGURA ,  Chengjin ZHANG ,  Amir FARAJIDANA ,  Amir AMINZADEH GOHARI ,  Wenshu ZHANG

IPC: H04W24/08 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04W24/08 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0057 ,  H04L5/006 ,  H04L5/0085 ,  H04L27/26 ,  H04W24/04 ,  H04W72/042 ,  H04W72/0446 ,  H04W76/15 ,  H04W76/19 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/23 ,  Y02D70/24

Abstract: In wireless communication networks using carrier aggregation including a secondary component carrier in unlicensed spectrum, a user equipment (UE) may monitor a downlink radio link quality of secondary cells for an event indicating failure of a communication link in the unlicensed spectrum with a secondary cell. The UE detects one or more failure events based on the downlink radio link quality. When a designated set of failure events is detected, the UE declares a failure state on the secondary cell. In response to the failure state, the UE may adjust operations related to the secondary component carrier in the unlicensed spectrum in order to save power and resources.

公开(公告)号：US20170048919A1

公开(公告)日：2017-02-16

申请号：US15232672

申请日：2016-08-09

Applicant: QUALCOMM Incorporated

Inventor： Peter GAAL ,  Srinivas YERRAMALLI ,  Durga Prasad MALLADI ,  Yongbin WEI ,  Alexei Yurievitch GOROKHOV ,  Brian BANISTER ,  Michael Lee MCCLOUD ,  Tao LUO ,  Supratik BHATTACHARJEE ,  Chengjin ZHANG ,  Ravi Teja SUKHAVASI

IPC: H04W76/04 ,  H04W72/00 ,  H04W72/14 ,  H04W72/04 ,  H04B7/06

Abstract: Various aspects related to techniques for harmonization between common reference signal (CRS) and demodulation reference signal (DM-RS) based transmission modes (TMs) in unlicensed spectrum are described. In one aspect, a downlink/uplink (DL/UL) subframe configuration may be signaled for each subframe. Information provided by the DL/UL subframe configuration may indicate whether the respective downlink subframe is a single-frequency network (MBSFN) subframe (associated with DM-RS-based TM) or a non-MBSFN subframe (associated with CRS-based TM). In another aspect, periodic as well as aperiodic channel state information (CSI) reporting requests may be supported. In yet another aspect, discontinued reception (DRX) wake ups for unlicensed carriers may be explicitly or implicitly indicated to a user equipment (UE) via a carrier in a licensed spectrum.

Abstract translation: 描述与非许可频谱中的公共参考信号（CRS）和基于解调参考信号（DM-RS）的传输模式（TM）之间的协调技术相关的各个方面。 在一个方面，可以为每个子帧发信号通知下行链路/上行链路（DL / UL）子帧配置。 由DL / UL子帧配置提供的信息可以指示相应的下行链路子帧是单频网络（MBSFN）子帧（与基于DM-RS的TM相关联）还是非MBSFN子帧（与基于CRS的TM相关联） 。 在另一方面，可以支持周期性和非周期性信道状态信息（CSI）报告请求。 在另一方面，可以通过许可频谱中的运营商向用户设备（UE）明确地或隐含地指示用于未授权载体的中断接收（DRX）唤醒。

公开(公告)号：US20250081141A1

公开(公告)日：2025-03-06

申请号：US18240690

申请日：2023-08-31

Applicant: QUALCOMM Incorporated

Inventor： Varun Amar REDDY ,  Murray JARVIS ,  Chengjin ZHANG

IPC: H04W64/00 ,  H04B17/318

Abstract: A wireless device may receive a first set of beacon messages from a first set of proximity devices. The wireless device may measure the first set of beacon messages. The wireless device may calculate a first position estimate of the wireless device based on the measured first set of beacon messages and a first set of locations associated with the first set of proximity devices. The wireless device may transmit the first position estimate. The wireless device may receive a second set of beacon messages from a subset of a second set of proximity devices based on the first position estimate. The wireless device may measure the second set of beacon messages. The wireless device may calculate a second position estimate based on the measured second set of beacon messages and a second set of locations associated with the subset of the second set of proximity devices.

公开(公告)号：US20240283291A1

公开(公告)日：2024-08-22

申请号：US18581840

申请日：2024-02-20

Applicant: QUALCOMM Incorporated

Inventor： Chengjin ZHANG ,  David GAGNE ,  Murray JARVIS ,  Tingfang JI ,  Arthur MILLER

IPC: H02J50/00 ,  G01S13/04 ,  H02J50/60

CPC classification number: H02J50/001 ,  G01S13/04 ,  H02J50/60

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmission device may receive sensing information. The transmission device may transmit a radio frequency (RF) signal configured to power an RF energy harvesting device based at least in part on the sensing information satisfying a condition associated with a presence of an object. Numerous other aspects are described.

公开(公告)号：US20190394791A1

公开(公告)日：2019-12-26

申请号：US16013674

申请日：2018-06-20

Applicant: QUALCOMM Incorporated

Inventor： Stefan BRUECK ,  Sunil Kumar KANDUKURI NARAYANA ,  Brian GEORGE ,  Chengjin ZHANG

IPC: H04W72/12 ,  H04W74/08 ,  H04W72/14

Abstract: The present disclosure relates to resolving out-of-sync uplink grants for communication in an unlicensed spectrum. For example, a user equipment (UE) may receive an uplink grant from a network entity on a downlink communication channel, wherein the uplink grant is associated with a system frame number (SFN). The UE may further determine, based on the SFN, that the uplink grant is out of order with one or more stored uplink grants within a queue. Additionally, the UE may insert the uplink grant in an ordered position within the queue relative to the one or more stored uplink grants.