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公开(公告)号：US10356789B2
公开(公告)日：2019-07-16
申请号：US15663542
申请日：2017-07-28
Applicant: QUALCOMM Incorporated
Inventor： Vasanthan Raghavan , Juergen Cezanne , Sundar Subramanian , Ashwin Sampath , Junyi Li
IPC: H04W72/04 , H04B7/06 , H04W72/08 , H04B7/0456 , H04B7/08
Abstract: Methods, systems, and devices are described for wireless communication at a user equipment (UE). A wireless communications system may improve UE discovery latency by dynamically selecting and switching beam forming codebooks at the millimeter wave base station and the wireless device. Selecting an optimal beam forming codebook may allow the wireless communication system to improve link margins between the base station without compromising resources. In some examples, a wireless device may determine whether the received signals from the millimeter wave base station satisfy established signal to noise (SNR) thresholds, and select an optimal beam codebook to establish communication. Additionally or alternately, the wireless device may further signal the selected beam codebook to the millimeter wave base station and direct the millimeter wave base station to adjust its codebook based on the selection.
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公开(公告)号：US20190123803A1
公开(公告)日：2019-04-25
申请号：US16167050
申请日：2018-10-22
Applicant: QUALCOMM Incorporated
Inventor： Vasanthan Raghavan , Valentin Alexandru Gheorghiu , Awlok Singh Josan , Jung Ryu , Junyi Li
IPC: H04B7/06 , H04B7/08 , H04B17/318 , H04B7/0426 , H04W72/04
Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may monitor for a beam scanning period indicator from a base station; configure an interval for beam scanning; and beam scan with a set of beams at the interval for beam scanning. In some aspects, a base station may configure an interval for beam scanning by a user equipment; selectively provide, to the user equipment, a beam scanning period indicator identifying the interval for beam scanning; and provide at least one beam from a set of beams in a synchronization codebook to enable the user equipment to perform beam scanning using the interval. Numerous other aspects are provided.
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公开(公告)号：US20190059056A1
公开(公告)日：2019-02-21
申请号：US16104014
申请日：2018-08-16
Applicant: QUALCOMM Incorporated
Inventor： Muhammad Nazmul Islam , Juergen Cezanne , Ashwin Sampath , Vasanthan Raghavan
IPC: H04W52/02
Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify that data is available to be transmitted to a user equipment (UE) that is operating in a discontinuous reception (DRX) mode. The base station may transmit, based at least in part on the data being available, a first wakeup message using a first band supported by the UE. The base station may transmit, based at least in part on the data being available, a second wakeup message using a second band supported by the UE, the second band being different from the first band.
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公开(公告)号：US20190053321A1
公开(公告)日：2019-02-14
申请号：US16058706
申请日：2018-08-08
Applicant: QUALCOMM Incorporated
Inventor： Muhammad Nazmul Islam , Juergen Cezanne , Ashwin Sampath , Vasanthan Raghavan , Jianghong Luo , Sundar Subramanian , Sumeeth Nagaraja
Abstract: Methods, systems, and devices for wireless communication are described. A base station may initiate a beam management procedure, including reference signal transmission to a user equipment (UE) and receive beam training. A base station may configure a UE to monitor a set of beams for reference signals. Based on the received reference signals, the UE may optionally select one or more transmit beams for wakeup signal reception, and may transmit an indication of the selected beams to the base station. The base station may transmit a wakeup signal over the originally configured or the UE-selected transmit beams to initiate wake-up procedure at the UE. The base station and UE may subsequently perform a refined beam management procedure, providing a refined reference signal transmission from the base station. Based on the received transmission, the UE may select a refined beam for downlink transmissions.
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公开(公告)号：US20180368149A1
公开(公告)日：2018-12-20
申请号：US15997157
申请日：2018-06-04
Applicant: QUALCOMM Incorporated
Inventor： Vasanthan Raghavan , Miguel Rodrigo Castellanos Llorca , Jung Ryu , Sundar Subramanian , Juergen Cezanne , Junyi Li
IPC: H04W72/08 , H04B7/0452 , H04B7/04 , H04B7/0408 , H04W72/12 , H04W72/14
Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may identify a set of transmit beams having a channel characteristic above a first threshold. The set of transmit beams may be an ordered list of transmit beams based on the associated channel characteristic of each transmit beam. The UE may determine, based at least in part on the set of transmit beams, a cross-correlation metric between a set of receive beams. The set of receive beams may include an ordered list of receive beam configurations with channel characteristic above a second threshold. The UE may transmit a message that identifies the cross-correlation metric between beams in the set of receive beams.
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Patent Agency Ranking
公开(公告)号：US09872296B2
公开(公告)日：2018-01-16
申请号：US14822681
申请日：2015-08-10
Applicant: QUALCOMM Incorporated
Inventor： Vasanthan Raghavan , Juergen Cezanne , Sundar Subramanian , Ashwin Sampath , Junyi Li
CPC classification number: H04W72/0466 , H04B7/0456 , H04B7/0617 , H04B7/0639 , H04B7/0874 , H04W72/085
Abstract: Methods, systems, and devices are described for wireless communication at a user equipment (UE). A wireless communications system may improve UE discovery latency by dynamically selecting and switching beam forming codebooks at the millimeter wave base station and the wireless device. Selecting an optimal beam forming codebook may allow the wireless communication system to improve link margins between the base station without compromising resources. In some examples, a wireless device may determine whether the received signals from the millimeter wave base station satisfy established signal to noise (SNR) thresholds, and select an optimal beam codebook to establish communication. Additionally or alternately, the wireless device may further signal the selected beam codebook to the millimeter wave base station and direct the millimeter wave base station to adjust its codebook based on the selection.
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公开(公告)号：US12302175B2
公开(公告)日：2025-05-13
申请号：US17942425
申请日：2022-09-12
Applicant: QUALCOMM Incorporated
Inventor： Junyi Li , Juergen Cezanne , Vasanthan Raghavan
Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may configure one or more first sets of resources of a radio frequency spectrum band associated with a first pathloss mode, and may configure one or more second sets of resources associated with a second pathloss mode. Each set of resources may be configured with some transmission timing parameters and frame structure, such that a transmission time interval (TTI) associated with the first pathloss mode may be different from the TTI associated with the second pathloss mode. The wireless device may communicate with a second wireless device using the one or more first sets of resources based on identifying a pathloss value is below an identified pathloss threshold. Additionally, the wireless device may communicate with a third device using the one or more second sets of resources based on identifying a pathloss value satisfies the identified pathloss threshold.
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公开(公告)号：US12301496B2
公开(公告)日：2025-05-13
申请号：US16948895
申请日：2020-10-05
Applicant: QUALCOMM Incorporated
Inventor： Vasanthan Raghavan , Tao Luo , Junyi Li
IPC: H04L5/00 , H04B7/0408 , H04B7/06
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit sounding reference signals (SRSs) on a plurality of beams to a base station using a set of SRS resources indicated by the base station. The UE may receive, from the base station, an SRS resource indicator indicating one or more SRS resources of the set of SRS resources and determine a combined transmit beam from the plurality of beams based at least in part on the SRS resource indicator. Numerous other aspects are provided.
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公开(公告)号：US12250576B2
公开(公告)日：2025-03-11
申请号：US17690816
申请日：2022-03-09
Applicant: QUALCOMM Incorporated
Inventor： Daoud Abdelhafiz Burghal , Raghu Narayan Challa , Vasanthan Raghavan , Farhad Meshkati , Ruhua He , Ting Kong
Abstract: Methods, systems, and devices for wireless communications are described. A first device may monitor for a set of reference signals from a second device using a set of directional beams. The first device may perform measurements on the received reference signals and select a subset of directional beams from the set of directional beams based on the performed measurements. Each directional beam may be associated with a set of beamforming weights. The first device may communicate with the second device using a dynamic set of beamforming weights. The first device may form the dynamic set of beamforming weights using a combination of beamforming weights from each set of beamforming weights associated with the subset of directional beams. The dynamic set of beamforming weights may be different from each set of beamforming weights associated with the subset of directional beams.
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公开(公告)号：US12245254B2
公开(公告)日：2025-03-04
申请号：US17476626
申请日：2021-09-16
Applicant: QUALCOMM Incorporated
Inventor： Vasanthan Raghavan , Sony Akkarakaran , Tao Luo , Junyi Li
IPC: H04W72/51 , H04W72/044 , H04W72/21
Abstract: A method at a UE for indicating change in physical state of the UE includes: determining a change of the UE from a first physical state of a plurality of physical states to a second physical state of the plurality of physical states; and transmitting one or more antenna system characteristics, corresponding to an antenna system of the UE, based on determining the change of the UE from the first physical state of the plurality of physical states to the second physical state of the plurality of physical states.
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