公开(公告)号：US11309941B2

公开(公告)日：2022-04-19

申请号：US16794120

申请日：2020-02-18

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Bilal Sadiq ,  Tao Luo ,  Sundar Subramanian ,  Junyi Li

IPC: H04B7/00 ,  H04B7/0417 ,  H04B7/08 ,  H04B7/06 ,  H04B7/0452 ,  H01Q1/24 ,  H04B7/0404 ,  H04B7/0426 ,  H04W16/28 ,  H04W28/02 ,  H04W40/08 ,  H04W52/14 ,  H04W74/08

Abstract: A UE may select a first beam for communication with a base station. The UE may attempt, through the selected first beam, at least one RACH procedure with the base station. The UE may determine that the at least one RACH procedure failed with the base station. The UE may send, after a successful RACH procedure with the base station, information indicating that the at least one RACH procedure failed. In an aspect, the UE may select a new beam for communication with the base station after the determination that the at least one RACH procedure failed, and at least a portion of the successful RACH procedure may be performed through the selected new beam.

公开(公告)号：US11304210B2

公开(公告)日：2022-04-12

申请号：US17068408

申请日：2020-10-12

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Sundar Subramanian ,  Junyi Li ,  Juergen Cezanne ,  Navid Abedini ,  Bilal Sadiq ,  Tao Luo ,  Ashwin Sampath

IPC: H04W72/08 ,  H04B7/06 ,  H04W72/04 ,  H04W16/28 ,  H04W36/06 ,  H04W36/32 ,  H04W52/02

Abstract: Techniques are described for wireless communication. One method includes exchanging one or more signals between a first wireless node and a second wireless node, determining, at the first wireless node and based on the one or more signals, a range of correspondence between at least one of a transmit beam of the first wireless node and a receive beam of the first wireless node, determining a difference between indices of the transmit beam of the first wireless node and the receive beam of the first wireless node, and determining an uncertainty region for beam mapping based on the determined difference.

公开(公告)号：US11280876B2

公开(公告)日：2022-03-22

申请号：US16419769

申请日：2019-05-22

Applicant: QUALCOMM Incorporated

Inventor： Kapil Gulati ,  Junyi Li ,  Jayakrishnan Unnikrishnan ,  Sundar Subramanian

IPC: G01S7/00 ,  G01S13/34 ,  G01S13/32 ,  H04J13/00 ,  G01S7/35 ,  G01S7/02

Abstract: Methods, systems, and devices for radar signaling are described. In some systems, devices may implement techniques to support coexistence for multiple radar sources using a phase-coded frequency modulated continuous wave waveform. A user equipment (e.g., a vehicle) may select a codeword (e.g., a pattern of parameters) from a codebook and may derive phase code information and waveform shape parameters from values specified in the codeword. The user equipment may apply phase modulation to at least one chirp of a waveform using the indicated phase code. In some cases, the phase-coded frequency modulated continuous wave waveform may resemble nested Zadoff-Chu sequences, where the waveform resembles a Zadoff-Chu sequence and the phase code resembles another Zadoff-Chu sequence. The phase code may support mitigating interference between radar waveforms that use the same slope and frequency offset parameters for chirps overlapping in time.

公开(公告)号：US20220060960A1

公开(公告)日：2022-02-24

申请号：US17453762

申请日：2021-11-05

Applicant: QUALCOMM INCORPORATED

Inventor： Jung Ho Ryu ,  Navid Abedini ,  Junyi Li ,  Karl Georg Hampel ,  Muhammad Nazmul Islam ,  Sundar Subramanian ,  Jianghong Luo ,  Juergen Cezanne ,  Vasanthan Raghavan

IPC: H04W36/32 ,  H04W36/00 ,  H04L5/00 ,  H04W36/36 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may initiate handover from one base station to another. The handover procedure may not include random access channel (RACH) transmissions, and thus may be a localized RACH-less handover. The UE may initiate handover to a new base station based on the relative location of the UE and the new base station, some predetermined time, or based on the characteristics of the signals from each base station.

公开(公告)号：US11259300B2

公开(公告)日：2022-02-22

申请号：US16858022

申请日：2020-04-24

Applicant: QUALCOMM Incorporated

Inventor： Sundar Subramanian ,  Joseph Binamira Soriaga ,  Ashwin Sampath ,  Junyi Li ,  Juergen Cezanne ,  Tingfang Ji ,  Alexei Yurievitch Gorokhov ,  Muhammad Nazmul Islam

IPC: H04W72/04 ,  H04L5/00

Abstract: A structure where there are self-contained subframes/slots with smaller TTIs within the subframes/slots is provided to address the issues in MMW scheduling. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may transmit downlink information to at least one UE using a plurality of downlink TTIs within a subframe/slot. The apparatus may receive uplink information from the at least one UE using at least one uplink region within the subframe/slot. In another aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may receive downlink information from a base station using at least one downlink TTI within a subframe/slot. The subframe/slot may include a plurality of downlink TTIs and at least one uplink region. The apparatus may transmit uplink information to the base station using the at least one uplink region within the subframe/slot.

公开(公告)号：US11258575B2

公开(公告)日：2022-02-22

申请号：US16184864

申请日：2018-11-08

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Sundar Subramanian ,  Junyi Li ,  Durga Prasad Malladi ,  Karl Georg Hampel ,  Muhammad Nazmul Islam

IPC: H04L5/14 ,  H04B7/0404 ,  H04L5/16 ,  H04B7/06 ,  H04B7/0408 ,  H04L5/00 ,  H04W72/04 ,  H04B7/0452

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may utilize different beam configurations for different signal types, traffic demand, path loss, capabilities of the wireless device or other wireless devices in the system, and the like. The wireless device also may be capable of determining different duplexing modes, which may be utilized in addition to the different beam configurations. The duplexing mode may be based on received measurement reports (e.g., from one or more reference signals) or in some instances, the duplexing mode may be determined by another node (e.g., a core network node, a base station) and transmitted to the wireless device.

公开(公告)号：US20220007344A1

公开(公告)日：2022-01-06

申请号：US17476067

申请日：2021-09-15

Applicant: QUALCOMM Incorporated

Inventor： Bilal Sadiq ,  Sundar Subramanian ,  Muhammad Nazmul Islam ,  Juergen Cezanne ,  Navid Abedini ,  Tao Luo

IPC: H04W72/04 ,  H04L27/26 ,  H04W56/00 ,  H04L5/00

Abstract: Techniques are described for wireless communication. In one method, a user equipment (UE) receives a timing synchronization signal (TSS) and a physical broadcast channel (PBCH), with the TSS based at least in part on a timing of the TSS within a broadcast channel transmission time interval (BCH TTI); determines the timing of the TSS within the BCH TTI; and demodulates the PBCH based at least in part on the TSS. In another method, a base station allocates resources for a TSS and a PBCH within a BCH TTI; determines the TSS based at least in part on a timing of the TSS within the BCH TTI; and transmits, on the resources allocated for the TSS and the PBCH, the TSS and the PBCH, with the TSS transmitted as a demodulation reference signal (DMRS) for the PBCH on at least one port used to transmit the TSS and the PBCH.

公开(公告)号：US11211986B2

公开(公告)日：2021-12-28

申请号：US16673530

申请日：2019-11-04

Applicant: QUALCOMM Incorporated

Inventor： Sundar Subramanian ,  Xiao Feng Wang ,  Junyi Li ,  Juergen Cezanne ,  Ashwin Sampath

IPC: H04L5/12 ,  H04B7/06 ,  H04W56/00 ,  H04W24/10 ,  H04L5/00 ,  H04L25/02

Abstract: Methods, systems, and devices for wireless communication are described. In aspects of the present disclosure, a user equipment (UE) may report metrics (e.g., received signal power, beam identifier) about synchronization signal (SS) beams using the same (e.g., or a similar) framework that is used for channel state information reference signal (CSI-RS) reporting. Because SSs are intended to be broadcast across a wide coverage area in a beamformed manner, the SSs represent a promising complement to existing beam management techniques. Accordingly, beam management may be achieved at least in part based on reporting one or more metrics of beamformed SSs through a channel feedback framework.

公开(公告)号：US11196462B2

公开(公告)日：2021-12-07

申请号：US15188502

申请日：2016-06-21

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Sundar Subramanian ,  Krishna Kiran Mukkavilli ,  Ashwin Sampath ,  Junyi Li

IPC: H04B7/0408 ,  H04W16/28 ,  H04B7/0413 ,  H04B7/06 ,  H04B17/336 ,  H04L7/04 ,  H04W72/04 ,  H04B7/0452

Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify two (or more) beamforming directions associated with simultaneous communications to a set of receivers. Each receiver may be associated with a different one of the two beamforming directions. The base station may schedule resources for simultaneous communications with the set of receivers based on the identified two beamforming directions. The base station may schedule simultaneous transmissions to the set of receivers using the scheduled resources.

公开(公告)号：US11191108B2

公开(公告)日：2021-11-30

申请号：US15707520

申请日：2017-09-18

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Junyi Li ,  Juergen Cezanne ,  Tao Luo ,  Sundar Subramanian

IPC: H04W74/06 ,  H04W74/08 ,  H04B7/06 ,  H04L5/00 ,  H04W48/16 ,  H04W72/04

Abstract: Certain aspects of the present disclosure provide techniques for random-access channel (RACH) communication. For example, certain aspects provide a method for wireless communication. The method generally includes transmitting a plurality of reference signals using one or more beams, and receiving at least one of a RACH preamble and or a RACH payload corresponding to one or more of the reference signals transmitted via at least one of the one or more beams.