公开(公告)号：US11457482B2

公开(公告)日：2022-09-27

申请号：US17247206

申请日：2020-12-03

Applicant: QUALCOMM Incorporated

Inventor： Mahmoud Taherzadeh Boroujeni ,  Tao Luo ,  Juan Montojo ,  Peter Gaal ,  Jelena Damnjanovic ,  Yan Zhou

IPC: H04B17/318 ,  H04L1/00 ,  H04W24/10 ,  H04W56/00 ,  H04W74/08 ,  H04W74/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine a message type for a random access message associated with a two-step random access channel procedure. The message type may be either a first message type or a second message type that is different from the second message type. The message type may be determined based at least in part on whether a signal strength satisfies a signal strength threshold. The user equipment may transmit the random access message based at least in part on the determined message type. Numerous other aspects are provided.

公开(公告)号：US11456906B2

公开(公告)日：2022-09-27

申请号：US16991609

申请日：2020-08-12

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Tingfang Ji ,  John Edward Smee

IPC: H04L27/26 ,  H04L5/00 ,  G01S13/50 ,  H04L23/02 ,  H04L25/02

Abstract: Certain aspects of the present disclosure provide techniques for transmitting and processing reference signals, such as DMRS, that may account for mobility characteristics (e.g., that relate to a Doppler measurement) of a wireless node (e.g., a UE), such as Doppler measurements indicating how fast such a device is moving.

公开(公告)号：US11456904B2

公开(公告)日：2022-09-27

申请号：US17214027

申请日：2021-03-26

Applicant: QUALCOMM Incorporated

Inventor： Mehmet Izzet Gurelli ,  Qiang Wu ,  Jing Sun ,  Xiaoxia Zhang ,  Tao Luo ,  Iyab Issam Sakhnini ,  Jun Ma ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Juan Montojo ,  Peter Gaal

IPC: H04L27/26

Abstract: Orthogonal frequency-division multiplexing (OFDM) numerologies that maintain symbol boundary alignment while distributing excess cyclic prefixes (CPs) among OFDM symbols. Communication is established using a first sub-carrier spacing (SCS) and a first OFDM numerology, such as an exemplary numerology that distributes excess CP duration among a set of symbols that occupy a time interval within or equal to a corresponding time interval of a symbol of a second OFDM numerology with a second lower SCS. The first SCS may be, e.g., 960 kHz. The second SCS may be, e.g., 120 kHz. Another exemplary OFDM numerology described herein distributes the excess CP as prefix and postfix portions to one of the symbols, such as the first symbol of a set. Communication then proceeds using the first OFDM numerology at the first SCS and, in illustrative examples, using the second OFDM numerology at the second SCS or other OFDM numerologies at other SCSs.

公开(公告)号：US11451425B2

公开(公告)日：2022-09-20

申请号：US17185603

申请日：2021-02-25

Applicant: QUALCOMM Incorporated

Inventor： Gokul Sridharan ,  Saeid Sahraei ,  June Namgoong ,  Peter Gaal ,  Krishna Kiran Mukkavilli ,  Tingfang Ji ,  Wei Yang

IPC: H04L25/03 ,  H04L25/49 ,  H04L27/26 ,  H04B1/71 ,  H04W72/04

Abstract: Techniques for peak-to-average power ratio (PAPR) reduction are described. Wireless devices may use one or more PAPR shaping resources, such as expanded bandwidth and/or pulse-shaping filtering, for shaping a signal to reduce PAPR. For example, expanded bandwidth may be utilized for adding a cyclic affix (CA), such as may comprise a cyclic prefix (CP), cyclic suffix (CS), etc., and combinations thereof, to a frequency domain data signal to provide a CP augmented frequency domain data signal used to generate a reduced PAPR time domain data signal. Additionally or alternatively, pulse-shaping filtering may be applied to a frequency domain signal to provide a pulse-shaped frequency domain data signal used to generate a reduced PAPR time domain data signal. Other aspects and features are also claimed and described.

公开(公告)号：US20220286866A1

公开(公告)日：2022-09-08

申请号：US17193897

申请日：2021-03-05

Applicant: QUALCOMM Incorporated

Inventor： Le Liu ,  Alberto Rico Alvarino ,  Peter Gaal ,  Chiranjib Saha ,  Umesh Phuyal ,  Xiao Feng Wang ,  Juan Montojo ,  Vishnu Vardhan Chetlur Ravi

IPC: H04W16/28 ,  H04W36/08 ,  H04W74/08 ,  H04W56/00 ,  H04B7/06 ,  H04L5/00

Abstract: Example aspects include a method, apparatus and computer-readable medium of wireless communication at a base station of a mobile network, comprising transmitting system information corresponding to an aerial cell of the mobile network or a cell having at least one aerial sector being formed by one or more uptilt beams of the base station. The aspects further include performing, according to the system information, a random access channel (RACH) procedure with an aerial user equipment (UE). Additionally, the aspects include establishing, via the aerial cell or the at least one aerial sector, a communications link with the aerial UE.

公开(公告)号：US11438846B2

公开(公告)日：2022-09-06

申请号：US16544819

申请日：2019-08-19

Applicant: QUALCOMM Incorporated

Inventor： Wei Yang ,  Amir Aminzadeh Gohari ,  Yi Huang ,  Peter Gaal ,  Chao Jin ,  Amir Farajidana ,  Alexei Yurievitch Gorokhov ,  Rebecca Wen-ling Yuan ,  Vishal Mahajan ,  Tarandeep Virk ,  Christos Komninakis

IPC: H04W72/04 ,  H04W52/14 ,  H04W74/08 ,  H04B1/713 ,  H04L5/00

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for maintaining phase coherency in the event of changes to uplink transmit power. For example, the techniques described herein may help mitigate the impact on phase continuity of uplink transmissions by UEs capable of dual connectivity (DC).

公开(公告)号：US11431463B2

公开(公告)日：2022-08-30

申请号：US16992920

申请日：2020-08-13

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok Ang ,  Peter Gaal ,  Huilin Xu ,  Wooseok Nam ,  Muhammad Sayed Khairy Abdelghaffar ,  Aamod Dinkar Khandekar ,  Yuanning Yu

IPC: H04L5/00 ,  H04W72/04 ,  H04L1/16

Abstract: Certain aspects of the present disclosure provide techniques for wireless communication scheduling. An example method that may be performed by a user equipment (UE) includes receiving, from a base station, one or more configurations indicating wireless communication resources including at least one of a plurality of bandwidth parts (BWP) or a plurality of component carriers (CCs); receiving, from the base station, control signaling indicating a scheduling offset to communicate with the base station via at last one of the BWPs within at least one of the CCs; determining a value of the scheduling offset based at least in part on a minimum scheduling offset value; and taking at least one action in response to the determination.

公开(公告)号：US11431459B2

公开(公告)日：2022-08-30

申请号：US14456880

申请日：2014-08-11

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Naga Bhushan ,  Wanshi Chen ,  Durga Prasad Malladi ,  Tingfang Ji ,  Tao Luo ,  Yongbin Wei ,  Peter Gaal

IPC: H04L5/00 ,  H04W16/14 ,  H04W74/08 ,  H04L1/16

Abstract: Methods, systems, devices, and apparatuses are described for wireless communications. In one method, a set of one or more data subframes of a data frame may be transmitted over an unlicensed spectrum, to a user equipment (UE), during a transmission period. A group hybrid automatic repeat request (HARQ) feedback message for a plurality of data subframes including at least one of the data subframes in the set of one or more data subframes may then be received over the unlicensed spectrum, from the UE, during the transmission period. In another method, a set of one or more data subframes of a data frame may be received over an unlicensed spectrum during a transmission period. A group HARQ feedback message for a plurality of data subframes including at least one of the data subframes in the set of one or more data subframes may then be transmitted over the unlicensed spectrum during the transmission period.

公开(公告)号：US11425714B2

公开(公告)日：2022-08-23

申请号：US16947385

申请日：2020-07-30

Applicant: QUALCOMM Incorporated

Inventor： Heechoon Lee ,  Peter Gaal ,  Wanshi Chen ,  Tao Luo ,  Juan Montojo ,  Tingfang Ji

IPC: H04W72/04 ,  H04L5/00 ,  H04L5/14 ,  H04W72/00 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit or otherwise indicate a semi-static slot format configuration and a dynamic slot format configuration to a user equipment (UE). The UE may determine a slot format configuration based on the received semi-static and dynamic slot format configurations. In some cases, the UE may replace certain resources of the semi-static slot format configuration with resources from the dynamic slot format configuration depending on a certain embodiment. Additionally or alternatively, the base station may transmit an anchor slot configuration to the UE, which may indicate which resources of the semi-static slot format configuration can be overridden or replaced by the dynamic slot format configuration.

公开(公告)号：US11424790B2

公开(公告)日：2022-08-23

申请号：US17424097

申请日：2020-01-20

Applicant: QUALCOMM Incorporated

Inventor： Chenxi Hao ,  Parisa Cheraghi ,  Yu Zhang ,  Lei Xiao ,  Peter Gaal ,  Wanshi Chen ,  Alexei Yurievitch Gorokhov

IPC: H04B7/02 ,  H04B7/0417 ,  H04B7/0456

Abstract: A user equipment (UE) may utilize frequency domain (FD) compression for reporting channel state information (CSI) including a precoding matrix indicator (PMI). The UE may receive a CSI configuration specifying a first set of configured FD units to be reported. The UE may determine a first number of FD units based on the first set of configured FD units. The UE may select a second number of FD units that is greater than or equal to the first number of FD units. The UE may calculate, for one or more layers, a PMI for a second set of FD units including a number of FD units equal to the second number of FD units. The UE may allocate, according to a mapping rule, a number of PMIs for the first set of FD units to a subset of the PMIs for the second set of FD units.