公开(公告)号：US12126551B2

公开(公告)日：2024-10-22

申请号：US17395339

申请日：2021-08-05

Applicant: QUALCOMM Incorporated

Inventor： Vinay Chande ,  Arumugam Chendamarai Kannan ,  Srinivas Yerramalli ,  Giovanni Chisci ,  Xiaoxia Zhang ,  Jing Sun ,  Tao Luo

IPC: H04W72/0453 ,  H04L5/00 ,  H04W24/10 ,  H04W72/541

CPC classification number: H04L5/0039 ,  H04W24/10 ,  H04W72/0453 ,  H04W72/541

Abstract: The present disclosure relates to methods and devices for wireless communication including an apparatus, e.g., a UE and/or a base station. In one aspect, the apparatus may measure one or more candidate bandwidths, each of the one or more candidate bandwidths corresponding to a candidate channel. The apparatus may also select an operating bandwidth of the one or more candidate bandwidths based on the measured one or more candidate bandwidths, the operating bandwidth corresponding to an operating channel. Additionally, the apparatus may adjust an energy detection threshold of a reference bandwidth based on a sensing bandwidth. The apparatus may also determine whether a transmission medium is available based on at least one of the adjusted energy detection threshold or an interference level of at least one signal.

公开(公告)号：US12114353B2

公开(公告)日：2024-10-08

申请号：US17449870

申请日：2021-10-04

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Vinay Chande ,  Arumugam Chendamarai Kannan ,  Xiaoxia Zhang ,  Aleksandar Damnjanovic

IPC: H04W74/0808 ,  H04W24/08 ,  H04W24/10 ,  H04W72/044 ,  H04W74/00 ,  H04W74/0816

CPC classification number: H04W74/0808 ,  H04W24/08 ,  H04W24/10 ,  H04W72/0473 ,  H04W74/002 ,  H04W74/0816

Abstract: A method of wireless communication includes determining, by a communication device, a value of a counter associated with a listen-before-talk (LBT) operation. The method further includes, after determining the value of the counter and during a first portion of a deferral interval associated with the LBT operation, performing a first measurement of a particular duration to determine a first energy value. The method further includes, during a second portion of the deferral interval subsequent to the first portion, performing a second measurement of the particular duration to determine a second energy value. The method also includes determining whether to initiate a contention interval associated with the LBT operation based on the first energy value and further based on the second energy value.

公开(公告)号：US12028733B2

公开(公告)日：2024-07-02

申请号：US17472342

申请日：2021-09-10

Applicant: QUALCOMM Incorporated

Inventor： Vinay Chande ,  Arumugam Chendamarai Kannan ,  Jing Sun ,  Xiaoxia Zhang ,  Aleksandar Damnjanovic ,  Tao Luo

IPC: H04W24/10 ,  H04B17/318 ,  H04W24/04 ,  H04W84/04 ,  H04W84/12

CPC classification number: H04W24/10 ,  H04B17/318 ,  H04W24/04 ,  H04W84/042 ,  H04W84/12

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, related to long-term-sensing-based inter-operator coexistence techniques for unlicensed high bands providing a measurement framework and candidate measurements, along with channel selection, per beam channel deselection, and dynamic frequency selection. In one aspect, a network entity may determine that a non-coordinating node satisfies a communication presence threshold based on the at least one long term sensing measurement, and transmitting, to a user equipment (UE), an indication of a remedial action, or adjusting the communication channel based on the determination. In another aspect, a UE may obtain at least one long term sensing measurement, and transmit a long term sensing report including the at least one long term sensing measurement.

公开(公告)号：US12010724B2

公开(公告)日：2024-06-11

申请号：US18194961

申请日：2023-04-03

Applicant: QUALCOMM Incorporated

Inventor： Giovanni Chisci ,  Arumugam Chendamarai Kannan ,  Jing Sun ,  Vinay Chande ,  Xiaoxia Zhang ,  Aleksandar Damnjanovic

IPC: H04W74/0816 ,  H04W16/28 ,  H04W72/044

CPC classification number: H04W74/0816 ,  H04W16/28 ,  H04W72/046

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitting node may perform a directional listen-before-talk (LBT) using a sensing beam. The transmitting node may start a channel occupancy time (COT) after the directional LBT based at least in part on one of a COT claiming signal or a time stamp. The transmitting node may perform, to a receiving node, one or more transmissions during the COT using one or more transmit beams that are included in the sensing beam. Numerous other aspects are described.

公开(公告)号：US12010668B2

公开(公告)日：2024-06-11

申请号：US17357342

申请日：2021-06-24

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Vasanthan Raghavan ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Junyi Li ,  Giovanni Chisci ,  Xiaoxia Zhang ,  Tao Luo ,  Jing Sun ,  Sungwoo Park

IPC: H04W72/0453 ,  H04B7/08 ,  H04L5/00 ,  H04L27/26 ,  H04W56/00 ,  H04W72/044 ,  H04W72/23

CPC classification number: H04W72/0453 ,  H04B7/0888 ,  H04L5/0094 ,  H04L27/26025 ,  H04L27/2657 ,  H04W56/001 ,  H04W72/046 ,  H04W72/23 ,  H04L5/001 ,  H04L5/0048

Abstract: Methods, systems, and devices for wireless communications are described. To support a reliable array response for wideband communications, a base station may configure a set of transmission instances for a set of signals distributed across a wideband carrier bandwidth. At least one transmission instance of the set of transmission instances may be configured in each sub-band of the carrier bandwidth. The base station may transmit the set of signals in the configured transmission instances to a user equipment (UE). The UE may receive the set of signals distributed across the carrier bandwidth and may measure, for the signals, a set of signal measurements corresponding to the set of sub-bands. Based on the signal measurements, the UE may determine a set of communication beams for the set of sub-bands. Using one or more of the determined communication beams, the UE may communicate with the base station in the carrier bandwidth.

公开(公告)号：US11889510B2

公开(公告)日：2024-01-30

申请号：US17098303

申请日：2020-11-13

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Xiaoxia Zhang ,  Tao Luo

IPC: H04W72/23 ,  H04L5/00 ,  H04W72/044 ,  H04W72/542

CPC classification number: H04W72/23 ,  H04L5/0048 ,  H04W72/046 ,  H04W72/542 ,  H04W72/044

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for frame based operation and medium contention procedures in wireless networks. In some aspects, devices of a wireless network may perform receiver side contention operations. To illustrate, reference signals from a receiving device may be transmitted to a transmitting device and used by the transmitting device to estimate interference for transmitter side transmissions. Such receiver side reference signals may more accurately reflect the interference profile that transmissions sent by the transmitting device will face, such as when operating in a spectrum shared with many devices. The transmitting device may utilize the beam(s) that satisfy interference criteria when receiving the reference signals to transmit data. Receiver side frame based operation may provide a more stable interference profile which enables better rate prediction, and the better rate prediction may increase reliability and overall network and medium throughput.

公开(公告)号：US11716755B2

公开(公告)日：2023-08-01

申请号：US17125021

申请日：2020-12-17

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Xiaoxia Zhang ,  Vinay Chande ,  Arumugam Chendamarai Kannan ,  Srinivas Yerramalli ,  Tao Luo ,  Juan Montojo ,  Aleksandar Damnjanovic

IPC: H04W74/08 ,  H04L5/00 ,  H04W72/21 ,  H04W72/0453

CPC classification number: H04W74/0808 ,  H04L5/0055 ,  H04W72/21 ,  H04W72/0453

Abstract: Aspects are provided that allow a base station to provide a user equipment (UE) multiple timing opportunities to transmit an acknowledgment to a pre-grant (APG) after receiving a pre-grant for a downlink transmission. The base station transmits to the UE a pre-grant for a downlink transmission from the base station, the pre-grant triggering a plurality of timing opportunities for the UE to send an APG to the base station. The UE performs, after receiving the pre-grant, a clear channel assessment (CCA) during at least one timing opportunity of the plurality of timing opportunities. The UE transmits one or more APGs to the base station when the CCA is successful, and the UE receives the downlink transmission from the base station in response to the one or more APGs. The UE transmits the one or more APGs to the base station until the downlink transmission is received from the base station.

公开(公告)号：US11696327B2

公开(公告)日：2023-07-04

申请号：US17182508

申请日：2021-02-23

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Aleksandar Damnjanovic ,  Xiaoxia Zhang ,  Vinay Chande ,  Srinivas Yerramalli ,  Jing Sun ,  Tao Luo

IPC: H04W74/08

CPC classification number: H04W74/0808 ,  H04W74/0816

Abstract: Methods, systems, and devices for wireless communications are described in which a transmitting device using shared radio frequency spectrum may perform a listen before talk (LBT) procedure for at least a minimum dwell time and, upon successful completion of the LBT procedure, may occupy the spectrum for up to a duration of a channel occupancy time (COT). The transmitting device may discontinue transmitting during the COT for a gap period, and resume transmitting subsequent to the gap period without performing another LBT procedure. The minimum dwell time may be based on a periodicity of a channel reservation signal transmitted by one or more other devices using the shared radio frequency spectrum. In some cases, the transmitting device may schedule one or more receiving devices with resources for transmissions during the COT, and the receiving devices may perform a LBT that is non-adjacent with an associated transmission.

公开(公告)号：US11582618B2

公开(公告)日：2023-02-14

申请号：US16888131

申请日：2020-05-29

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Sony Akkarakaran ,  Xiaoxia Zhang ,  Tao Luo ,  Sungwoo Park ,  Olufunmilola Omolade Awoniyi-Oteri ,  Mostafa Khoshnevisan ,  Kaushik Chakraborty

IPC: H04W16/28 ,  H04W72/04 ,  H04W56/00 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device, such as a base station or a user equipment, may identify an energy detection threshold for a sensing beam associated with a channel access procedure, such as a listen-before-talk (LBT) procedure. The wireless device may also identify a set of transmit power parameters for one or more transmit beams. The wireless device may determine a degree of overlap between a coverage area of one or more transmit beams and a coverage area of the sensing beam. The wireless device may adjust the set of transmit power parameters, the energy detection threshold, or a combination thereof based on the degree of overlap. The wireless device may perform the channel access procedure based on the determining, the adjusting, or both.

公开(公告)号：US11576206B2

公开(公告)日：2023-02-07

申请号：US16326290

申请日：2017-09-22

Applicant: Qualcomm Incorporated

Inventor： Peng Cheng ,  Vinay Chande ,  Arumugam Chendamarai Kannan ,  Chirag Patel

IPC: H04W74/08 ,  H04W72/12 ,  H04W52/02 ,  H04W8/00 ,  H04W24/10 ,  H04W52/24 ,  H04W72/14 ,  H04W74/00 ,  H04W76/27

Abstract: Methods, systems, and devices for wireless communication are described. A base station may determine a measurement scheme or uplink mode and then transmit an indication of the scheme or uplink mode to an associated user equipment (UE). The base station may identify a set of hidden nodes for the UE and configure the UE for autonomous or grant-based uplink transmissions accordingly. A UE may initiate a channel clearance scheme by transmitting a first channel clearance signal (e.g., a request-to-send message), which may include a UE identifier before transmitting an uplink message in the unlicensed radio frequency spectrum band. In response, the base station may transmit a second channel clearance signal (e.g., a clear-to-send message). In some cases, the second channel clearance signal may include control information or may be transmitted at a power level that is based on a characteristic of the UE.