公开(公告)号：US11303327B2

公开(公告)日：2022-04-12

申请号：US16861970

申请日：2020-04-29

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Raghu Narayan Challa ,  Jong Hyeon Park

IPC: H04B7/04 ,  H04B7/0408 ,  H04B7/0456 ,  H04B7/06

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may select two transmit beams from a plurality of beams that the UE is capable of forming using an antenna array of the UE that includes a plurality of antenna elements, wherein the two transmit beams are to be used to transmit two corresponding layers of information; determine, after selecting the two transmit beams, a phase difference to be applied to the two transmit beams based at least in part on the two transmit beams; and transmit the information on the two corresponding layers concurrently via the two transmit beams using the phase difference. Numerous other aspects are provided.

公开(公告)号：US11108170B2

公开(公告)日：2021-08-31

申请号：US16178189

申请日：2018-11-01

Applicant: Qualcomm Incorporated

Inventor： Kaushik Chakraborty ,  Rahul Malik ,  Jeremy Dunworth

IPC: H01Q1/22 ,  H01Q21/30 ,  H01Q5/28 ,  H01Q5/35 ,  H01Q5/50 ,  H01Q1/24 ,  H01Q1/40 ,  H01Q21/24

Abstract: An apparatus is disclosed for a multi-band millimeter-wave (mmW) antenna array and radio-frequency integrated circuit (RFIC) module. In an example aspect, the apparatus includes a multi-band mmW antenna array and RFIC module with a first antenna array, a second antenna array, and at least one radio-frequency front-end integrated circuit. The first antenna array includes at least two first antenna elements and is tuned to a first mmW frequency band. The second antenna array includes at least two second antenna elements and is tuned to a second mmW frequency band. The at least one radio-frequency front-end integrated circuit includes at least two first transceiver chains and at least two second transceiver chains. The at least two first transceiver chains are respectively coupled to the at least two first antenna elements, and the at least two second transceiver chains are respectively coupled to the at least two second antenna elements.

公开(公告)号：US11044735B2

公开(公告)日：2021-06-22

申请号：US16721705

申请日：2019-12-19

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Tao Luo ,  Jing Sun ,  Rahul Malik ,  Tamer Kadous ,  Akula Reddy

IPC: H04W72/12 ,  H04J1/02 ,  H04L5/00 ,  H04W72/04 ,  H04L27/26

Abstract: Aspects of the disclosure relate to methods and apparatus of wireless communication to support frequency division multiplexing (FDM) of multiple waveforms. The methods and apparatus schedule FDM symbols where the scheduling of the FDM symbols is selectively based on one or more waveform parameters during a time interval when the FDM symbols are transmitted. The FDM symbols are then transmitted over the time interval. Further aspects also include the reception of the FDM symbols in a receiver where the waveform parameters are applied for decoding based on application of the waveform parameters.

公开(公告)号：US11032718B2

公开(公告)日：2021-06-08

申请号：US15878056

申请日：2018-01-23

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Tamer Adel Kadous ,  Tao Luo

IPC: H04W16/28 ,  H04W64/00 ,  H04B7/06 ,  H04B7/08 ,  H04B7/0404 ,  H04M15/00 ,  H04W4/24

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for optimizing millimeter wave beam-searching. In certain aspects, a method for use by a wireless communications device includes determining a usage scenario of the wireless device based on input performing a beam search to maintain or establish a communication link with one or more other wireless devices, wherein one or more beams are prioritized or de-prioritized during the beam search based on the usage scenario.

公开(公告)号：US10897326B2

公开(公告)日：2021-01-19

申请号：US15934745

申请日：2018-03-23

Applicant: QUALCOMM Incorporated

Inventor： Akula Reddy ,  Jing Sun ,  Tao Luo ,  Sony Akkarakaran ,  Rahul Malik ,  Tamer Kadous

IPC: H04L1/00 ,  H04L5/00

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may determine a coreset of time and frequency resources within a control region of a coreset bandwidth. In one aspect, the coreset bandwidth may be based on a minimum bandwidth configuration associated with one or more UEs in a set of UEs. The apparatus may also transmit a PDCCH as a single-carrier waveform via the coreset of time and frequency resources. In one aspect, the PDCCH may be transmitted to each UE in the set of UEs using the coreset bandwidth.

公开(公告)号：US10862562B2

公开(公告)日：2020-12-08

申请号：US16698049

申请日：2019-11-27

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Srinivas Yerramalli ,  Tamer Kadous ,  Kaushik Chakraborty

IPC: H04B7/06 ,  H04B7/0404 ,  H04B7/08

Abstract: Methods, systems, and devices for wireless communications are described that provide for refinement of receive beam beamforming parameters at a user equipment (UE). A UE may transmit two or more signals in an uplink transmission that have different beamforming parameters. A base station receiving the uplink transmission may measure the two or more signals, and identify a first signal of the two or more signals based at least in part on the measuring. The base station may inform the UE of the identified first signal, which the UE may use to set receive beam beamforming parameters for one or more subsequent downlink transmissions.

公开(公告)号：US20200220584A1

公开(公告)日：2020-07-09

申请号：US16733500

申请日：2020-01-03

Applicant: QUALCOMM INCORPORATED

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Sony Akkarakaran ,  Rahul Malik ,  Kaushik Chakraborty

IPC: H04B7/0408 ,  H04B7/0413 ,  H04W72/04 ,  H04B7/08 ,  H04B7/06 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A base station may configure a first sub-band and a second sub-band of a system bandwidth for communication with a user equipment (UE). The base station may determine a spatial quasi co-location (QCL) relationship between the first sub-band and the second sub-band and may transmit signaling to the UE that indicates the determined spatial QCL relationship. Upon receiving the signaling, the UE may derive, based on the indicated spatial QCL relationship, spatial parameters (e.g., beam width, pointing angle, etc.) for communication with the base station via the second sub-band. The spatial parameters may be derived based on spatial parameters used for reception of a downlink transmission from the base station via the first sub-band. Subsequently, the UE may communicate with the base station via the second sub-band using the derived spatial parameters.

公开(公告)号：US20190342029A1

公开(公告)日：2019-11-07

申请号：US16517399

申请日：2019-07-19

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Aleksandar Damnjanovic ,  Marco Papaleo ,  Rahul Malik ,  Peter Gaal

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

Abstract: Techniques are described for wireless communication. A first method includes sensing an indication of first radio access technology (RAT) communications occupying a shared radio frequency spectrum band; and configuring, in response to the sensing, at least one parameter of a second RAT used by a device to contend for access to the band. A second method includes randomly selecting a number from a range of numbers extending between a lower bound and an upper bound; contending for access to a shared radio frequency spectrum band by performing an extended clear channel assessment (ECCA) procedure over a plurality of CCA slots, the plurality of CCA slots including a first number of CCA slots equal to the upper bound; and winning contention for access to the band after determining, while performing the ECCA procedure, that the band is available for a second number of CCA slots equal to the randomly selected number.

公开(公告)号：US10397976B2

公开(公告)日：2019-08-27

申请号：US16022522

申请日：2018-06-28

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Srinivas Yerramalli

IPC: H04W16/32 ,  H04W76/27 ,  H01Q5/307 ,  H04L5/00 ,  H04W24/10 ,  H04B1/00 ,  H04B1/403 ,  H04W16/10 ,  H04W24/02 ,  H04W24/08

Abstract: Methods, systems, and devices for wireless communication are described. Some wireless communications systems may support multi-band operation. Different frequency bands may experience different communication characteristics (e.g., frequency-dependent fading), which may result in undesirable interference patterns and/or coverage gaps. The described techniques provide for a network architecture that optimizes throughput while considering interference metrics. The network architecture may in some cases adapt to changes in the communication environment (e.g., dynamically or semi-statically), and the adaptation may be autonomous or may be performed in conjunction with a coordinating entity. Additionally, the described techniques provide for improved mobility procedures for devices within the network, which may improve throughput, reduce latency, or otherwise benefit the wireless communications system.

公开(公告)号：US20190104416A1

公开(公告)日：2019-04-04

申请号：US16143281

申请日：2018-09-26

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Rahul Malik ,  Tamer Kadous

IPC: H04W16/14 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. A base station may configure a system bandwidth of shared spectrum partitioned into a plurality of bandwidth parts based on interference associated with each of the plurality of bandwidth parts. The base station may then transmit the configuration of the system bandwidth to a plurality of devices. A UE may receive, from a base station, a configuration of a system bandwidth of shared spectrum. The system bandwidth may be partitioned into a plurality of bandwidth parts based on interference associated with each of the plurality of bandwidth parts. The UE may then communicate with the base station on at least one of the bandwidth parts.