公开(公告)号：US11716633B2

公开(公告)日：2023-08-01

申请号：US17837871

申请日：2022-06-10

Applicant: QUALCOMM Incorporated

Inventor： Kaushik Chakraborty ,  Xiaoxia Zhang ,  Jing Sun ,  Tamer Kadous

IPC: H04J1/16 ,  H04W16/14 ,  H04W24/04 ,  H04W74/08 ,  H04W72/0453 ,  H04W72/23

CPC classification number: H04W16/14 ,  H04W24/04 ,  H04W72/0453 ,  H04W72/23 ,  H04W74/0808

Abstract: Wireless communications systems and methods related to communications in a network that supports data transmitted in an unlicensed frequency band and a licensed frequency band are provided. A first wireless communication device communicates, with a second wireless communication device, a configuration indicating a first resource in an unlicensed frequency band and a second resource in a licensed band. The first wireless communication device communicates, with the second wireless communication device in the unlicensed frequency band, a first communication signal based on the configuration. The first wireless communication device communicates with the second wireless communication device in the licensed frequency band, a second communication signal based on at least one of a channel status of the unlicensed frequency band or a transmission parameter associated with at least one of the first communication signal or the second communication signal.

公开(公告)号：US11653341B2

公开(公告)日：2023-05-16

申请号：US17367583

申请日：2021-07-05

Applicant: QUALCOMM incorporated

Inventor： Srinivas Yerramalli ,  Jing Sun ,  Xiaoxia Zhang ,  Tamer Kadous ,  Yongbin Wei

IPC: H04W72/04 ,  H04W72/0446 ,  H04W72/1268 ,  H04W74/08

CPC classification number: H04W72/0446 ,  H04W72/1268 ,  H04W74/0808

Abstract: Methods, systems, and devices for wireless communications are described that provide for frame-based initiator device operations. A wireless device may be operating within a frame-based equipment communications system, where a frame may include a channel occupancy time period and a minimum idle period. An initiating device may be configured to initiate autonomous uplink communications during the channel occupancy time period of its frame, while the device may not initiate communications during an idle period of its frame. In some cases, a frame-based equipment communications system may include more than one initiating device, where the idle periods for different initiating devices may occur at different times. In some cases, the initiating device may be configured to initiate communications during the idle period for another initiating device. This may allow the wireless system to decrease system overhead associated with a minimum idle period per frame.

公开(公告)号：US11470655B2

公开(公告)日：2022-10-11

申请号：US16365505

申请日：2019-03-26

Applicant: QUALCOMM Incorporated

Inventor： Seyed Ali Akbar Fakoorian ,  Xiaoxia Zhang ,  Srinivas Yerramalli ,  Chih-Hao Liu ,  Tamer Kadous

IPC: H04L5/00 ,  H04W74/08 ,  H04W76/27 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may perform a transmission detection procedure on each base station before combining control information. The UE may use demodulation reference signals (DMRS) as a detection mechanism. If the UE detects a DMRS from a base station, the UE may determine that a control resource set associated with the base station is valid for combining. If the UE does not detect DMRS from the base station, the UE may refrain from combining control information from the base station. In another example, base stations that pass a listen-before-talk (LBT) pr6ocedure may transmit a preamble before transmitting control information. A preamble may carry a preamble sequence associated with a specific control resource set. The UE may identify a preamble sequence and determine that the corresponding control resource set is valid for control information combining.

公开(公告)号：US11469945B2

公开(公告)日：2022-10-11

申请号：US15847737

申请日：2017-12-19

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Chih-Hao Liu ,  Tamer Kadous

IPC: H04L12/24 ,  H04W72/04 ,  H04W28/20 ,  H04L5/00 ,  H04W88/08 ,  H04W88/02 ,  H04W4/02 ,  H04L41/0816 ,  H04L41/0896

Abstract: In order to conserve power resources for low complexity UEs, a base station may apparatus dynamically adjust a bandwidth configuration of a UE or the base station and communicates with the UE according to the dynamically adjusted bandwidth configuration. The communication may be narrowband communication. A UE may apparatus dynamically adjust a bandwidth configuration of the UE and communicates with a base station based on the dynamically adjusted bandwidth configuration. The dynamically adjusted bandwidth configuration may correspond to a function performed by the UE.

公开(公告)号：US11431430B2

公开(公告)日：2022-08-30

申请号：US16711768

申请日：2019-12-12

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tao Luo ,  Tamer Kadous ,  Juan Montojo ,  Xiao Feng Wang ,  Sony Akkarakaran

IPC: H04J11/00 ,  H04W48/12 ,  H04L5/00 ,  H04W72/12

Abstract: User equipment associated with a legacy network may utilize a bottom-to-top search technique to identify relevant control channel samples. Generating a control channel that is configured for the bottom-to-top search technique may lead to poor performance in a single-carrier waveform, which may be disadvantageous as networks move toward New Radio. In some aspects, described herein, a base station generates a control channel that is configured to minimize gaps in the control channel, and a user equipment performs a top-to-bottom search technique to identify relevant control channel samples. By using the top-to-bottom search technique, degradation of single-carrier waveforms is reduced and efficiency is improved.

公开(公告)号：US11363465B2

公开(公告)日：2022-06-14

申请号：US16581579

申请日：2019-09-24

Applicant: QUALCOMM incorporated

Inventor： Kaushik Chakraborty ,  Xiaoxia Zhang ,  Jing Sun ,  Tamer Kadous

IPC: G06F11/00 ,  H04W16/14 ,  H04W24/04 ,  H04W72/14 ,  H04W74/08

Abstract: Wireless communications systems and methods related to communications in a network that supports data transmitted in an unlicensed frequency band and a licensed frequency band are provided. A first wireless communication device communicates, with a second wireless communication device, a configuration indicating a first resource in an unlicensed frequency band and a second resource in a licensed band. The first wireless communication device communicates, with the second wireless communication device in the unlicensed frequency band, a first communication signal based on the configuration. The first wireless communication device communicates with the second wireless communication device in the licensed frequency band, a second communication signal based on at least one of a channel status of the unlicensed frequency band or a transmission parameter associated with at least one of the first communication signal or the second communication signal.

公开(公告)号：US11284308B2

公开(公告)日：2022-03-22

申请号：US16584366

申请日：2019-09-26

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Kamel Sadek ,  Yisheng Xue ,  Siddhartha Mallik ,  Tamer Kadous ,  Xiaoxia Zhang ,  Taesang Yoo ,  Michael Mingxi Fan ,  Aleksandar Damnjanovic ,  Yongbin Wei ,  Jing Sun

IPC: H04W28/26 ,  H04W52/24 ,  H04L5/00 ,  H04W16/14 ,  H04B7/06 ,  H04L27/00 ,  H04L5/14 ,  H04B17/336 ,  H04W74/08 ,  H04W84/04

Abstract: A medium reservation framework is disclosed for coexistence of coordinated and uncoordinated wireless networks in licensed spectrum and shared spectrum. The proposed medium reservation framework organically takes into account operating regimes with different numbers of Tx/Rx antennas per node, provides flexibility in trading off medium contention aggressiveness and power saving, leverages the inherent synchronization nature of NR, and covers both coordinated and uncoordinated operation scenarios. Various aspects of the medium reservation framework may be centered on one or more combinations of some basic building blocks, such as an operation grid, synchronization signals, and reservation messages, such as a reservation request signal (RRQ) and one or more a reservation response signals (RRS).

公开(公告)号：US11259327B2

公开(公告)日：2022-02-22

申请号：US16384732

申请日：2019-04-15

Applicant: QUALCOMM Incorporated

Inventor： Kaushik Chakraborty ,  Xiaoxia Zhang ,  Jing Sun ,  Tamer Kadous

IPC: H04W74/08 ,  H04W16/14

Abstract: Methods, systems, and devices for wireless communications are described. In systems supporting unlicensed downlink and licensed uplink communications, transmitter-based and/or receiver-based listen-before-talk may be implemented. In a transmitter-based scheme, a base station performs listen-before-talk on a downlink unlicensed band to monitor for signals from other base stations. In a first receiver-based scheme, a user equipment may send a clear to send signal on the licensed uplink channel or unlicensed downlink channel to assist a listen-before-talk operation at a serving base station. In a second receiver-based scheme, the user equipment monitors for downlink preamble transmissions from base stations other than a serving base station and reports detected preambles to the serving base station. The base station may schedule the user equipment based on the reported preambles. In some cases, the serving base station may signal other base stations to back off and reduce interference on the unlicensed downlink spectrum.

公开(公告)号：US11233614B2

公开(公告)日：2022-01-25

申请号：US16385929

申请日：2019-04-16

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04L5/00 ,  H04W56/00

Abstract: A method and a system for narrowband wireless communication is disclosed. The base station constructs a DRS comprising a first set of contiguous NPSS subframes followed by a second set of contiguous repeating NSSS subframes. The DRS may further comprise a third set of NSSS subframes followed by a fourth set of NPSS subframes. The base station may apply a cover code to symbols of the NPSS subframes. The base station transmits the NPSS/NSSS subframes as part of a DRS subframe on an anchor channel.

公开(公告)号：US20210410189A1

公开(公告)日：2021-12-30

申请号：US17474750

申请日：2021-09-14

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Jing Sun ,  Xiaoxia Zhang ,  Ananta Narayanan Thyagarajan ,  Tamer Kadous

IPC: H04W74/08 ,  H04W74/00 ,  H04L1/00 ,  H04W72/14 ,  H04W72/12 ,  H04W16/14

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may rate match an uplink transmission around a set of resources reserved by a base station. The base station may indicate a set of reserved resources which overlaps an uplink resource allocation to the UE. The base station may transmit an indicator of the reserved resources, and the UE may identify a location of a clear channel assessment (CCA) gap in a symbol period relative to the reserved resources. By rate matching around the reserved resources and one or more CCA gaps, the UE may transmit uplink information despite the allocated uplink resources colliding with the reserved resources.