公开(公告)号：US20230077982A1

公开(公告)日：2023-03-16

申请号：US17475928

申请日：2021-09-15

Applicant: QUALCOMM Incorporated

Inventor： Raj Kumar NATTHA ,  Jun ZHU ,  Jyothi Kiran VATTIKONDA

IPC: H04W16/28 ,  H04W56/00 ,  H04W24/08 ,  H04B17/318

Abstract: Method and apparatus for an enhanced beam refinement procedure in a multi-cell scenario. The apparatus receives a beam refinement configuration indicating beam measurement is restricted to a serving cell and excluded for a neighbor cell. The apparatus measures an SSB of the serving cell by sweeping multiple beams restricted based on the beam refinement configuration. Measurement of a concurrent SSB of the neighbor cell is excluded in the sweeping of the multiple beams. The apparatus identifies a refined beam for the serving cell based on the sweeping of the multiple beams.

公开(公告)号：US20220248429A1

公开(公告)日：2022-08-04

申请号：US17167598

申请日：2021-02-04

Applicant: QUALCOMM Incorporated

Inventor： Jun ZHU ,  Yongle WU ,  Raghu Narayan CHALLA

IPC: H04W72/12 ,  H04W72/02

Abstract: Certain aspects of the present disclosure provide techniques for scheduling component carriers and one or more operations on a per NB RF chain basis. A method that may be performed by a user equipment (UE) includes monitoring occurrences of a first number of operations to be performed for a plurality of component carriers (CCs) according to different periodicities, determining a second number of available narrow band (NB) radio frequency (RF) chains, and scheduling, on the available NB RF chains, up to the second number of the operations to be performed for the plurality of CCs based on a scheduling algorithm if the first number is greater than the second number.

公开(公告)号：US20220239361A1

公开(公告)日：2022-07-28

申请号：US17160954

申请日：2021-01-28

Applicant: QUALCOMM Incorporated

Inventor： Ruhua HE ,  Mihir Vijay LAGHATE ,  Jun ZHU ,  Yong LI ,  Raghu Narayan CHALLA

IPC: H04B7/06 ,  H04W24/10 ,  H04B17/318 ,  H04B17/336 ,  H04W56/00 ,  H04W72/00 ,  H04L5/00

Abstract: A wireless communication device can expedite beam scans for beam management. The wireless communication device can perform a beam scan using a first beam reference signal of a synchronization signal block (SSB) and a second beam reference signal associated with a physical broadcast control channel (PBCH) of the SSB. For each synchronization signal block (SSB) index (e.g., transmit beam) monitored by the wireless communication device, the wireless communication device can obtain a respective beam quality metric on each of two or more respective receive beams using at least the first and second beam reference signals. Other aspects, features, and embodiments are also claimed and described.

公开(公告)号：US20220131574A1

公开(公告)日：2022-04-28

申请号：US17452300

申请日：2021-10-26

Applicant: QUALCOMM Incorporated

Inventor： Jun ZHU ,  Mihir Vijay LAGHATE ,  Raghu Narayan CHALLA

IPC: H04B7/0426 ,  H04B7/06

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a monitoring signal associated with one or more antennas. The UE may identify, based at least in part on the monitoring signal, a blockage associated with the one or more antennas. The UE may perform a beam search using a decreased frequency of occurrence of tracking occasions for the one or more antennas based at least in part on the identification of the blockage associated with the one or more antennas. Numerous other aspects are provided.

公开(公告)号：US20210160706A1

公开(公告)日：2021-05-27

申请号：US17104948

申请日：2020-11-25

Applicant: QUALCOMM Incorporated

Inventor： Yongle WU ,  Ting KONG ,  Arvind Vardarajan SANTHANAM ,  Yong LI ,  Jun ZHU ,  Raghu Narayan CHALLA ,  Viswanath SANKARAN ,  Nagaraju GAJULA

IPC: H04W16/28 ,  H04W36/00 ,  H04W36/08 ,  H04W24/10 ,  H04B17/318 ,  H04B17/336 ,  H04W52/52

Abstract: Methods, systems, and devices for wireless communications are described. The method, systems, and devices may include techniques for establishing a first connection with a first cell operating in accordance with a first radio access technology (RAT), and performing a beam sweep procedure for one or more candidate beams for adding or handover to a second cell operating in accordance with millimeter wave (mmW) RAT. The beam sweep procedure may be performed based on previous beam measurements stored in a measurement database. The techniques may further include selecting a beam from the one or more candidate beams for adding or handover to the second cell based on the beam sweep procedure, and adding or handing over to the second cell by establishing a second connection with the second cell using the selected beam.

公开(公告)号：US20190191425A1

公开(公告)日：2019-06-20

申请号：US15843778

申请日：2017-12-15

Applicant: QUALCOMM Incorporated

Inventor： Jun ZHU ,  Raghu Narayan CHALLA ,  Assaf TOUBOUL ,  Junyi LI

IPC: H04W72/04 ,  G06N3/08

CPC classification number: H04W72/046 ,  G06N3/08 ,  H04B7/0695 ,  H04B7/088

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 using an artificial neural network. The UE may predict a set of good Tx-Rx beam pairs using the artificial neural network, wherein the artificial neural network comprises an input layer, a middle layer, and an output layer. The UE may then determine the new serving Tx-Rx beam pair based on the set of good Tx-Rx beam pairs.

公开(公告)号：US20190182852A1

公开(公告)日：2019-06-13

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

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：US20250158778A1

公开(公告)日：2025-05-15

申请号：US18508758

申请日：2023-11-14

Applicant: QUALCOMM Incorporated

Inventor： Jun ZHU ,  Mihir Vijay LAGHATE ,  Raghu Narayan CHALLA

IPC: H04L5/00 ,  H04W72/044 ,  H04W72/541

Abstract: Method and apparatus for using different beams for PDCCH and PDSCH. The apparatus receives a PDCCH transmission using a first receive beam, the PDCCH transmission scheduling a PDSCH transmission. The apparatus receives the PDSCH transmission using a second receive beam. The apparatus may select the second receive beam for the PDSCH transmission separately from the first receive beam for the PDCCH transmission. The apparatus may switch from the first receive beam to the second receive beam after reception of the PDCCH transmission to receive the PDSCH transmission.

公开(公告)号：US20250132805A1

公开(公告)日：2025-04-24

申请号：US18491518

申请日：2023-10-20

Applicant: QUALCOMM Incorporated

Inventor： Jun ZHU ,  Raghu Narayan CHALLA ,  Yongle WU ,  Kang GAO ,  Sumant Jayaraman IYER ,  Shrenik PATEL ,  Michael Lee MCCLOUD ,  Brian Clarke BANISTER

IPC: H04B7/06 ,  H04B17/24 ,  H04L25/02

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive downlink communications with a receive beam that is formed using a set of antenna elements. The UE may measure, in parallel with the receiving the downlink communications, a channel impulse response (CIR) for each antenna element of the set of antenna elements in a round-robin fashion. The UE may generate a second receive beam or a transmit beam based at least in part on the CIRs for the set of antenna elements. Numerous other aspects are described.

公开(公告)号：US20240405844A1

公开(公告)日：2024-12-05

申请号：US18327810

申请日：2023-06-01

Applicant: QUALCOMM Incorporated

Inventor： Kang GAO ,  Jun ZHU ,  Mihir Vijay LAGHATE ,  Raghu Narayan CHALLA

IPC: H04B7/08 ,  H04W72/542

Abstract: Method and apparatus for a beam panic design. The apparatus measures at least one subset of beams of a set of beams received from a network entity. The apparatus monitors for a change within a subset of the measured beams having a highest signal quality. The apparatus measures a rate of the change of the subset of the measured beams having the highest signal quality, in response to detection of an occurrence of the change of the subset of the measured beams having the highest signal quality. The apparatus initiates a beam panic mode based on at least the rate of change of the subset of the measured beams having the highest signal quality is less than a first threshold