公开(公告)号：US20210152305A1

公开(公告)日：2021-05-20

申请号：US16963453

申请日：2019-02-06

Applicant: QUALCOMM Incorporated

Inventor： Chao WEI ,  Qiaoyu LI ,  Peng CHENG

IPC: H04L5/00 ,  H04W52/32

Abstract: Aspects of the present disclosure provide techniques for grouping demodulation reference signal (DMRS) sequences for uplink transmission without grant based on one or more of cross correlation of sequences, the cubic metric or peak-to-average power ratio (PAPR). In accordance with this technique, the power control for transmissions of DMRS can also be exploited to enhance sequence grouping. Features of the present disclosure may prepare a composite sequence that is generated by concatenating two base sequences. In this instance, the base station may provide UEs with a pool of base sequences. For transmission of DMRS, the UEs may select two base sequences that may be transmitted in two consecutive slots or two DMRS symbols in a slot. By allowing the UE to select two base sequences, the network may reduce the probability of a collision that may occur when two UEs select the same base sequence.

公开(公告)号：US20210120481A1

公开(公告)日：2021-04-22

申请号：US17041628

申请日：2019-04-11

Applicant: Peng CHENG ,  Huichun LIU ,  Qualcomm Incorporated

Inventor： Peng CHENG ,  Huichun LIU

IPC: H04W48/10 ,  H04J11/00 ,  H04W56/00 ,  H04W36/00

Abstract: A wireless device may receive a first synchronization signal block (SSB) in a radio frequency band of a first cell of a neighbor base station, and report a physical cell identifier (PCI) for the first cell to a serving base station. The serving base station may identify, based on the PCI report, whether a radio frequency band of the first SSB is in or off a synchronization raster, and determine whether to instruct the UE to report a global cell identifier (CGI) for the neighbor base station (e.g., CGI for the neighbor cell) based on the identification. The wireless device may identify CGI based system information obtained from the neighbor cell, system information obtained from a master cell associated with the neighbor base station, system information obtained from CGI broadcast from the neighbor cell, or system information requested from the neighbor cell using dedicated resources, based on the instruction.

公开(公告)号：US20200214042A1

公开(公告)日：2020-07-02

申请号：US16631402

申请日：2018-07-25

Applicant: Sumeeth NAGARAJA ,  Muhammad Nazmul ISLAM ,  Sundar SUBRAMANIAN ,  Tao LUO ,  Peng CHENG ,  QUALCOMM Incorporated

Inventor： Sumeeth NAGARAJA ,  Muhammad Nazmul ISLAM ,  Sundar SUBRAMANIAN ,  Tao LUO ,  Peng CHENG

IPC: H04W74/08 ,  H04W74/02 ,  H04W76/19 ,  H04W36/08 ,  H04W16/28 ,  H04B7/06

Abstract: A user equipment (UE) may initiate a random access (RACH) procedure using an uplink resource selected based on a corresponding received synchronization signal block. The UE may detect a random access procedure trigger. The UE may configure a selection threshold time. The selection threshold time may be based at least in part on a latency requirement of the UE. The UE may select a synchronization signal block having a corresponding uplink resource within the selection threshold time. The synchronization signal block and corresponding uplink resource satisfy one or more parameters or conditions. The UE may transmit a random access preamble on the corresponding uplink resource.

公开(公告)号：US20200169370A1

公开(公告)日：2020-05-28

申请号：US16630110

申请日：2018-06-25

Applicant: QUALCOMM Incorporated

Inventor： Peng CHENG ,  Wanshi CHEN ,  Hao XU ,  Umesh PHUYAL ,  Alberto RICO ALVARINO ,  Chao WEI

IPC: H04L5/00 ,  H04W72/04

Abstract: In an example, a method of wireless communication of a base station may include assigning, by the base station, one or more resources to a group comprising a plurality of UEs that includes a first UE. The method may include receiving, by the base station from the first UE, a message on the one or more assigned resources. The message may include a cyclic redundancy check (CRC) scrambled with a group identifier for the group comprising the plurality of UEs. The message may include an indication of a UE identifier for the first UE within the group. The message may include a DMRS, where the indication of the UE identifier is represented by a sequence of the DMRS.

公开(公告)号：US20200154486A1

公开(公告)日：2020-05-14

申请号：US16630180

申请日：2018-08-21

Applicant: QUALCOMM Incorporated

Inventor： Peng CHENG ,  Chao WEI

IPC: H04W74/08 ,  H04L5/00 ,  H04L25/03 ,  H04L27/26

Abstract: NPRACH suffers from false alarms in which a base station detects and cannot distinguish an NPRACH signal that is intended for a different base station. An NPRACH may include a cell specific frequency shift pattern over repetitions and/or a repetition level scrambling sequence that enables a base station to more accurately detect NPRACH. An apparatus generates an NPRACH signal comprising multiple repetitions, wherein each repetition comprises multiple symbol groups. The apparatus may apply a different frequency shift between repetitions of the NPRACH signal. The frequency shift may comprise a cell specific random frequency shift pattern applied over each repetition. The apparatus may apply a repetition level scrambling sequence to the NPRACH signal, wherein a single scrambling sequence is applied to a set of repetitions comprised in the NPRACH signal. The apparatus transmits the NPRACH to a serving cell.

公开(公告)号：US20200044704A1

公开(公告)日：2020-02-06

申请号：US16599018

申请日：2019-10-10

Applicant: QUALCOMM Incorporated

Inventor： Yu Zhang ,  Chao WEI ,  Peng CHENG ,  Neng WANG ,  Jilei HOU

IPC: H04B7/0456 ,  H04L1/00 ,  H04W16/10 ,  H04B7/0426 ,  H04L1/06 ,  H04L1/18 ,  H04B7/06 ,  H04B7/0452 ,  H04W16/28

Abstract: Certain aspects of the present disclosure provide methods and apparatus for linear precoding in full-dimensional MIMO (FD-MIMO) systems. According to aspects, an eNB may compress a larger number of antenna elements to a smaller number of antenna ports. The eNB may use a port precoding matrix to transmit reference signals to a UE, receive feedback regarding CSI based on the reference signals, and transmit data to the UE, based on a mapping of multiple data layers and mapping of antenna ports to the physical antenna elements. Further, aspects include performing elevation beamforming by dynamically forming one or more vertical sectors based on UE feedback in the elevation domain.

公开(公告)号：US20250106799A1

公开(公告)日：2025-03-27

申请号：US18730514

申请日：2022-03-28

Applicant: QUALCOMM Incorporated

Inventor： Dan VASSILOVSKI ,  Gabi SARKIS ,  Karthika PALADUGU ,  Fatih ULUPINAR ,  Ozcan OZTURK ,  Peng CHENG ,  Hong CHENG ,  Qing LI ,  Tien Viet NGUYEN ,  Gene Wesley MARSH ,  Gavin Bernard HORN

IPC: H04W56/00 ,  H04W92/18

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first sidelink device may obtain an absolute time. The first sidelink device may perform a ranging session on a first sidelink connection with a second sidelink device to obtain a first propagation delay between the first sidelink device and the second sidelink device. The first device may generate a first corrected absolute time for the second sidelink device based at least in part on the absolute time and the first propagation delay such that the second sidelink device will also have the absolute time. The first sidelink device may transmit the first corrected absolute time to the second sidelink device in a first message on the first sidelink connection. Numerous other aspects are described.

公开(公告)号：US20250048156A1

公开(公告)日：2025-02-06

申请号：US18717561

申请日：2022-02-01

Applicant: QUALCOMM Incorporated

Inventor： Peng CHENG ,  Karthika PALADUGU ,  Hong CHENG

IPC: H04W24/10 ,  H04W76/11

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a remote user equipment (UE) may generate a measurement report for discovery that includes a serving relay UE source Layer 2 (L2) identifier (ID), of a serving relay UE that serves the remote UE, and a candidate relay UE source L2 ID, for each candidate relay UE of a set of candidate relay UEs. The UE may transmit the measurement report. Numerous other aspects are described.

公开(公告)号：US20240414513A1

公开(公告)日：2024-12-12

申请号：US18699872

申请日：2021-12-13

Applicant: QUALCOMM Incorporated

Inventor： Karthika PALADUGU ,  Hong CHENG ,  Gene Wesley MARSH ,  Peng CHENG

IPC: H04W8/00 ,  H04B17/318 ,  H04W76/14 ,  H04W92/18

Abstract: Methods, apparatuses, and computer-readable medium are provided. An example method may include transmitting, to one or more UEs including a second UE, a sidelink discovery message for a communication with a third UE. The example method may further include receiving, from the one or more UEs, a sidelink discovery response including information about a path with the third UE. The example method may further include establishing a sidelink connection with the second UE to relay the communication from the first UE to the third UE based, at least in part, on the information about the path between the second UE and the third UE.

公开(公告)号：US20240357695A1

公开(公告)日：2024-10-24

申请号：US18682104

申请日：2021-09-16

Applicant: QUALCOMM Incorporated

Inventor： Peng CHENG ,  Karthika PALADUGU ,  Ozcan OZTURK

IPC: H04W76/27 ,  H04W76/19 ,  H04W76/38

CPC classification number: H04W76/27 ,  H04W76/19 ,  H04W76/38

Abstract: A method, apparatus, and computer-readable storage medium for wireless communication at a first user equipment (UE) is provided. The UE receives an indication of one or more timers associated with a radio resource control (RRC) connection procedure with a base station via a relay. The UE transmits a request associated with an RRC connection to a second UE to be relayed to the base station and monitors for a response from the base station based on the one or more timers associated with the RRC connection procedure via the second UE as the relay.