公开(公告)号：US11785590B2

公开(公告)日：2023-10-10

申请号：US17540117

申请日：2021-12-01

Applicant: QUALCOMM Incorporated

Inventor： Kang Gao ,  Jun Zhu ,  Yong Li ,  Yongle Wu ,  Raghu Narayan Challa

IPC: H04L12/26 ,  H04W72/044 ,  H04W72/02 ,  H04W24/08 ,  H04W56/00

CPC classification number: H04W72/046 ,  H04W24/08 ,  H04W72/02 ,  H04W56/00

Abstract: A method of wireless communication by a user equipment (UE) includes determining a first synchronization signal block (SSB) to monitor beam management. The first SSB comprises a primary synchronization signal (PSS), multiple physical broadcast channels (PBCHs), and a secondary synchronization signal (SSS). The method also includes determining a list of receive beams for measuring the first SSB. The method further includes measuring the first SSB by measuring the PSS with a first beam from the list of receive beams, measuring, with a second beam from the list of receive beams, a first demodulation reference signal (DMRS) on a first PBCH symbol of a first of the PBCHs, measuring the SSS with a third beam from the list of receive beams; and measuring, with a fourth beam from the list of receive beams, a second DMRS on a second PBCH symbol of a second of the PBCHs.

公开(公告)号：US11785567B2

公开(公告)日：2023-10-10

申请号：US17244708

申请日：2021-04-29

Applicant: QUALCOMM Incorporated

Inventor： Ting Kong ,  Yongle Wu ,  Yong Li ,  Jun Zhu ,  Raghu Narayan Challa ,  Linzhe Li ,  Aparna Narayanan ,  Uzma Khan Qazi

IPC: H04W56/00

CPC classification number: H04W56/0015

Abstract: A UE is configured to determine a set of parameters associated with receiving the SSBs, the set of parameters including a first parameter bitmap associated with a serving cell, a second parameter bitmap associated with the neighbor cell, and the SMTC. The UE is configured to determine a search window for searching the received SSBs based on the SMTC and at least one of the first parameter bitmap or the second parameter bitmap. The UE may measure the SSBs searched during the determined search window and send measurement results associated with at least a subset of the measured SSBs to the base station. The UE may also prune measurements to generate the measurement results by removing measurements associated with SSBs received in slots that are not indicated to expect SSBs, based on the first parameter bitmap, the second first parameter bitmap, or the SMTC.

公开(公告)号：US11606762B2

公开(公告)日：2023-03-14

申请号：US16932412

申请日：2020-07-17

Applicant: QUALCOMM Incorporated

Inventor： Jun Zhu ,  Mihir Vijay Laghate ,  Raghu Narayan Challa ,  Yong Li

IPC: H04W56/00 ,  H04W24/10 ,  H04B7/06 ,  H04B7/01 ,  H04W72/044

Abstract: Certain aspects of the present disclosure provide techniques for a synchronization signal block (SSB)-level sleep mode. A method that may be performed by a user equipment (UE) includes determining, from a synchronization signal burst set, a first set of synchronization signal blocks (SSBs) to forgo performing measurements on using one or more receive beams based, at least in part, on one or more previous measurements associated with the determined first set of SSBs and performing measurements on only one or more remaining SSBs in the synchronization signal burst set using the one or more receive beams.

公开(公告)号：US11595957B2

公开(公告)日：2023-02-28

申请号：US17244416

申请日：2021-04-29

Applicant: QUALCOMM Incorporated

Inventor： Jun Zhu ,  Kang Gao ,  Yong Li ,  Heechoon Lee ,  Arvind Vardarajan Santhanam ,  Peter Pui Lok Ang ,  Raghu Narayan Challa

IPC: H04L12/28 ,  H04W72/0453 ,  H04J1/16

Abstract: Methods, systems, and devices for wireless communications are described. In a wireless communications system, a user equipment (UE) may receive, from a base station, an indication of a set of component carriers (CCs) for the UE and a respective frequency range (FR) for each CC of the set of CCs. Each CC-FR pairing may be associated with a respective priority of a set of priorities. The UE may initiate a plurality of timers, where each timer of the plurality of timers may correspond to a respective CC-FR pairing. After expiration of a timer of the plurality of timers, the UE may measure one or more reference signals of a subset of the set of CCs based at least in part on a capability of the UE and a priority of the respective CC-FR pairing associated with the timer.

公开(公告)号：US20230033247A1

公开(公告)日：2023-02-02

申请号：US17872302

申请日：2022-07-25

Applicant: QUALCOMM Incorporated

Inventor： Jun Zhu ,  Chinmay Shankar Vaze ,  Mihir Vijay Laghate ,  Raghu Narayan Challa ,  Alexei Yurievitch Gorokhov ,  Brian Clarke Banister ,  Yongle Wu

IPC: H04W24/08 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described in which a user equipment (UE) may perform beam measurements for one or more subsets of beams that are selected to provide enhanced beam switch determinations. The UE may identify one or more prioritized beams, and may measure the prioritized beams at a same periodicity as measurements of a serving beam. The UE may, additionally or alternatively, identify a set of all layer one beams (e.g., maximum-level beams or top level beams) for measurement according to a periodic interval, based on a measured mobility being less than a threshold value. The periodic interval may provide that each layer one beam may be measured at a cadence of one beam per measurement occasion, in order to provide measurement diversity.

公开(公告)号：US20220400390A1

公开(公告)日：2022-12-15

申请号：US17866224

申请日：2022-07-15

Applicant: QUALCOMM Incorporated

Inventor： Jun Zhu ,  Yong Li ,  Hongbo Yan ,  Raghu Narayan Challa

IPC: H04W16/28 ,  H04W24/10 ,  H04W56/00 ,  H04W72/00 ,  H04B17/318 ,  H04B17/336 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications at a user equipment (UE) are described. Aspects of the described techniques may include the user equipment measuring signal aspects for a plurality of respective receive beams for receiving communications associated with a synchronization signal block transmitted by a base station on a transmit beam. From the measured signal aspects, the UE may determine that a receive beam from the plurality of receive beams is a preferred beam for receipt of communications from the base station transmitted on the transmit beam. With the determined preferred beam, the UE may initiate a beam-sweeping procedure to re-measure the plurality of UE receive beams, where the UE measures the first UE receive beam before measuring others of the plurality of UE receive beams.

公开(公告)号：US11523394B2

公开(公告)日：2022-12-06

申请号：US16775213

申请日：2020-01-28

Applicant: QUALCOMM Incorporated

Inventor： Mihir Vijay Laghate ,  Raghu Narayan Challa ,  Jun Zhu ,  Mingming Cai ,  Yong Li ,  Ruhua He

IPC: H04W8/08 ,  H04W72/04 ,  H04W16/28 ,  H04W24/10

Abstract: A UE may be configured to select narrower or wider beams that may be suitable for use with a current UE mobility, scattering environment, etc. The UE may track changes to an identified beam of a certain width, and so may recover from tracking or other radio link failures by switching to a beam that is spatially adjacent or to a beam of a different width. The UE may identify a first beam associated with a first beam width based on at least one reference signal received by the UE. The UE may further determine a set of beams based on the first beam width that is associated with the identified first beam, and the determined set of beams may include at least one beam corresponding to the first beam width. The UE may further measure respective channel qualities associated with each beam of the determined set of beams.

公开(公告)号：US20220353863A1

公开(公告)日：2022-11-03

申请号：US17244416

申请日：2021-04-29

Applicant: QUALCOMM Incorporated

Inventor： Jun Zhu ,  Kang Gao ,  Yong Li ,  Heechoon Lee ,  Arvind Vardarajan Santhanam ,  Peter Pui Lok Ang ,  Raghu Narayan Challa

IPC: H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. In a wireless communications system, a user equipment (UE) may receive, from a base station, an indication of a set of component carriers (CCs) for the UE and a respective frequency range (FR) for each CC of the set of CCs. Each CC-FR pairing may be associated with a respective priority of a set of priorities. The UE may initiate a plurality of timers, where each timer of the plurality of timers may correspond to a respective CC-FR pairing. After expiration of a timer of the plurality of timers, the UE may measure one or more reference signals of a subset of the set of CCs based at least in part on a capability of the UE and a priority of the respective CC-FR pairing associated with the timer.

公开(公告)号：US11477664B2

公开(公告)日：2022-10-18

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 ,  H04W52/52 ,  H04B17/318 ,  H04B17/336 ,  H04W24/10

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：US11357010B2

公开(公告)日：2022-06-07

申请号：US16908355

申请日：2020-06-22

Applicant: QUALCOMM Incorporated

Inventor： Jun Zhu ,  Mihir Vijay Laghate ,  Raghu Narayan Challa

IPC: H04W72/04 ,  H04W64/00 ,  G01C19/00 ,  G01S19/01 ,  H04W24/10

Abstract: Sensor assisted beam management system and methods for mobile User Equipment (UEs) are disclosed. An embedded rotation sensor may be used to determine orientation, rotating direction and angular speed of the UE. A speed sensor and GPS may also be used to determine location, moving direction and speed of the UE. The sensor outputs may be used by the UE to efficiently select UE beams after movement or to predict when a UE beam should be updated. Beam search and measurement periodicities may also be updated based on UE movements reported by the sensors.