公开(公告)号：US10959105B2

公开(公告)日：2021-03-23

申请号：US16143281

申请日：2018-09-26

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Rahul Malik ,  Tamer Kadous

IPC: H04W4/00 ,  H04W16/14 ,  H04W74/08 ,  H04W72/04 ,  H04W72/08

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.

公开(公告)号：US10904773B2

公开(公告)日：2021-01-26

申请号：US16123899

申请日：2018-09-06

Applicant: QUALCOMM Incorporated

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

IPC: H04W24/02 ,  H04B7/0408 ,  H04B7/06 ,  H04W24/10 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described that provide for partitioning two or more dimensions of an uplink transmission, where different partitions in each partitioned dimension can be used to provide different feedback information. A UE may measure one or more downlink transmissions from a base station (e.g., beam measurements in a beam sweep procedure), and select a partition of one of the partitioned dimensions to indicate feedback related to the measured downlink transmissions. The feedback may indicate, for example, a particular beam that may be used for an active beam pair, beam refinement information, or other feedback. The partitioned dimensions may include one or more of time resource, a frequency resource dimension, a root sequence dimension, a cyclic shift dimension, a time-frequency dimension, or any combination thereof.

公开(公告)号：US10812214B2

公开(公告)日：2020-10-20

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 ,  H04W16/14 ,  H04W74/08 ,  H04W88/06 ,  H04L1/18 ,  H04W72/12

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：US10805979B2

公开(公告)日：2020-10-13

申请号：US16193786

申请日：2018-11-16

Applicant: QUALCOMM Incorporated

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

IPC: H04W76/28 ,  H04W52/02 ,  H04W76/15

Abstract: Methods, systems, and devices for wireless communications are described. Some wireless communications systems may support communications between a base station and a user equipment (UE) on multiple carriers. A UE may maintain a connection with a base station on a first carrier (e.g., an anchor carrier), and the UE may use a discontinuous reception (DRX) cycle on a second carrier. The DRX cycle may include scheduled on-durations during which the UE may monitor the second carrier for signaling from the base station. To reduce the power consumption at the UE associated with repeatedly monitoring scheduled on-durations, the base station may transmit wake-up signaling to the UE on the first carrier to identify the on-durations that include data from the base station. Accordingly, the UE may monitor these on-durations for the data and avoid monitoring other on-durations to limit power consumption.

公开(公告)号：US10716013B2

公开(公告)日：2020-07-14

申请号：US15909856

申请日：2018-03-01

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Tamer Kadous

IPC: H04W16/28 ,  H04L5/00 ,  H04B7/06 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described for transmitting a first signal corresponding to a symbol so as to cover a geographic sector with via analog beamforming, transmitting, using analog beamforming and a second port, a second signal corresponding to the symbol, wherein aspects of the symbol are phase modulated with respect to the first signal such that corresponding aspects of a combined signal are beam-formed in one or more directions that at least partially overlap the geographic sector, a receiver receives the combined signal and from it determines a preferred refined beam for subsequent transmissions and transmits an indicator that includes the preferred refined beam, and the transmitter receives an indication from a receiver identifying one or more aspects of the combined signal, and determining a refined beam for subsequent transmissions based at least in part on the indication.

公开(公告)号：US10548153B2

公开(公告)日：2020-01-28

申请号：US15910710

申请日：2018-03-02

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 the waveform parameters.

公开(公告)号：US20200029345A1

公开(公告)日：2020-01-23

申请号：US16454828

申请日：2019-06-27

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Jong Hyeon Park ,  Udara Fernando ,  Alexei Yurievitch Gorokhov ,  Nan Zhang ,  Junsheng Han ,  Scott Hoover ,  Ruhua He

IPC: H04W72/12 ,  H04W76/27 ,  H04W74/08 ,  H04W56/00 ,  H04W24/10 ,  H04L27/36 ,  H04W76/28 ,  H04W68/00 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may perform calibration of a transceiver chain to maintain or improve operation of a device or comply with legal or protocol requirements. The UE may receive one or more wireless signals indicating a first set of resources where the first device is scheduled to transmit or receive communications. The UE may calibrate a wireless transceiver chain of the first device in a second set of resources. The second set of resources excludes the first set of resources and includes at least a portion of a third set of resources. The third set of resources are resource in which the first device has an option to transmit or receive communications based on a protocol configuration.

公开(公告)号：US10419157B2

公开(公告)日：2019-09-17

申请号：US15913739

申请日：2018-03-06

Applicant: QUALCOMM Incorporated

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

IPC: H04L1/00 ,  H04W16/14 ,  H04W74/08 ,  H04W88/06 ,  H04L1/18 ,  H04W72/12

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：US20190141783A1

公开(公告)日：2019-05-09

申请号：US16180938

申请日：2018-11-05

Applicant: QUALCOMM Incorporated

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

IPC: H04W88/06 ,  H04W74/08 ,  H04L27/26 ,  H04L5/00 ,  H04W76/27 ,  H04W8/24

CPC classification number: H04W88/06 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0098 ,  H04L27/261 ,  H04L27/2666 ,  H04W8/24 ,  H04W36/06 ,  H04W74/0833 ,  H04W76/15 ,  H04W76/27 ,  H04W88/02 ,  H04W88/08

Abstract: Methods, systems, and devices for wireless communications are described that provide for activating and deactivating high-band connections, such as millimeter wave (mmW) connections while maintaining a low-band connection, based on a state of a user equipment (UE). An initial low-band connection, such as a connection that uses lower frequencies than mmW frequencies, may be established by a UE and a base station, and the base station may configure the UE for one or more high-band connections with one or more high-band base stations. The base station may provide an activation command to the UE to activate a high-band connection, and the UE may determine a currently supported mode for the activated high-band connection and establish the high-band connection based on the currently supported mode.

公开(公告)号：US20190141539A1

公开(公告)日：2019-05-09

申请号：US16182527

申请日：2018-11-06

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Rahul Malik ,  Kaushik Chakraborty

IPC: H04W16/14 ,  H04L1/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive data transmissions on primary cell and transmit feedback for the data transmissions on a secondary cell, where carriers on the secondary cell have a subcarrier spacing that is greater than the subcarrier spacing of carriers on the primary cell. The UE may perform a self-contained transmission by receiving data and transmitting feedback within a single transmission opportunity. The base station may schedule the UE for only downlink transmissions in the primary cell, removing uplink transmission resources and guard periods from slots of primary cell carriers. The UE may transmit other information on the high band cell as well, such as a channel quality indicator or scheduling requests. The base station may apply rate adjustments for downlink transmission in the next slot of a primary cell carrier.