公开(公告)号：US20210084672A1

公开(公告)日：2021-03-18

申请号：US17012626

申请日：2020-09-04

Applicant: QUALCOMM Incorporated

Inventor： Kapil Gulati ,  Junyi Li ,  Sony Akkarakaran ,  Jung Ho Ryu ,  Vasanthan Raghavan ,  Tao Luo

IPC: H04W72/12 ,  H04W72/14 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit to a base station a request for resources including an indication of a transmission beam for performing a sidelink communication in a millimeter wave (mmW) system. The base station may determine a transmission configuration based on the request for resources. The UE may transmit reference signals based on the transmission configuration, and the base station may monitor for the reference signals using one or more reception beams. The base station may determine timing information for the sidelink communication, and transmit the timing information to the UE in a resource grant. Based on the timing information, the UE may perform the sidelink communication using the transmission beam. In some examples, the sidelink communication may be multiplexed in frequency from the perspective of the base station with an uplink transmission from another UE.

公开(公告)号：US20210014729A1

公开(公告)日：2021-01-14

申请号：US16904210

申请日：2020-06-17

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Tianyang Bai ,  Jung Ho Ryu ,  Hua Wang ,  Junyi Li

IPC: H04W28/06

Abstract: Certain aspects of the present disclosure relate to assisting communications with low data payloads with relay nodes. An example method generally includes forming a first cluster with a first wireless node and one or more second wireless nodes, wherein each of the second wireless nodes has a low data rate demand relative to a system bandwidth. The method also includes determining to serve as a relay node for the first cluster, generating a first set of packets for uplink transmission to a base station, receiving a second set of packets from the one or more second wireless nodes, combining the first set of packets and the second set of packets into an uplink payload based on the determination, and transmitting, to the base station, the uplink payload based on the determination.

公开(公告)号：US10834615B2

公开(公告)日：2020-11-10

申请号：US16121199

申请日：2018-09-04

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Valentin Gheorghiu ,  Jung Ryu ,  Junyi Li

IPC: H04W24/04 ,  H04W24/02 ,  H04B7/06 ,  H04B7/0408 ,  H04W36/00 ,  H04B17/309 ,  H04B7/08

Abstract: A beam selection method and apparatus suitable for millimeter wave (mmW) communication systems is disclosed. In one aspect, a user equipment (UE) may perform a beam sweep procedure to identify suitable downlink beams candidates from one or more gNBs. The UE may generate a beam list by selecting some of the downlink beams for active tracking. When beams on the beam list become unavailable, the UE may compare the number of available beams on the beam list with a threshold value. If the number of available beams falls below the threshold, the UE may perform another beam sweep procedure.

公开(公告)号：US10819448B2

公开(公告)日：2020-10-27

申请号：US16144681

申请日：2018-09-27

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Junyi Li

IPC: H04B17/12 ,  H01Q21/00 ,  H04B17/17 ,  H04W24/06 ,  H04B17/10 ,  H04B17/00 ,  H04B7/06 ,  H04B7/0456 ,  H04W52/24 ,  H04W52/52 ,  H04B17/14 ,  H04B17/318 ,  H04W24/02

Abstract: In order to address the potential for antenna failure in large antenna arrays, a method, a computer-readable medium, and an apparatus are provided for wireless communication, e.g., at a base station or CPE. The apparatus detects a failure of a plurality of antenna elements in an antenna array associated with an antenna module in an antenna array comprising a plurality of antenna modules. The apparatus then applies a mitigation procedure in response to detecting the failure, e.g., when a fraction of antenna elements for which a failure is detected meets a threshold. The mitigation procedure may include any of switching to a different codebook, increasing DL or UL transmission power, or a VGA. The failure may be detected by transmitting pilot signals using sets of antenna elements of the antenna array and using signal strength measurements to detect antenna element failures.

公开(公告)号：US20200336942A1

公开(公告)日：2020-10-22

申请号：US16806731

申请日：2020-03-02

Applicant: QUALCOMM Incorporated

Inventor： Junyi Li ,  Juergen Cezanne ,  Vasanthan Raghavan

IPC: H04W28/16

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.

公开(公告)号：US20200186229A1

公开(公告)日：2020-06-11

申请号：US16680338

申请日：2019-11-11

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Juergen Cezanne ,  Kobi Ravid ,  Jung Ho Ryu ,  Junyi Li

IPC: H04B7/06 ,  H04W24/10 ,  H04W72/04 ,  H04W16/28

Abstract: Methods, systems, and devices for wireless communications are described. A communication device may perform a first set of beam measurements for a first plurality of beams over a wireless channel, each beam in the first plurality of beams having a first beam-width. The communication device may transmit a first beam measurement report for the first plurality of beams, the first beam measurement report indicating a beam sweep order for a second set of beam measurements for a second plurality of beams. The communication device may perform the second set of beam measurements for the second plurality of beams over the wireless channel according to the indicated beam sweep order, each beam in the second plurality of beams having a second beam-width that is narrower than the first beam-width.

公开(公告)号：US10681624B2

公开(公告)日：2020-06-09

申请号：US16557582

申请日：2019-08-30

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Jianghong Luo ,  Raghu Narayan Challa ,  Qijia Liu ,  Junyi Li ,  Alexei Yurievitch Gorokhov ,  Assaf Touboul

IPC: H04W48/16 ,  H04B7/06 ,  H04B7/0456 ,  H04W16/28

Abstract: A method, an apparatus, and a computer-readable medium may be described in the present disclosure. The apparatus may be a user equipment. The apparatus may determine whether a number of unsuccessful repetitions associated with performance of a first type of scanning exceeds a repetition threshold. The apparatus may perform a second type of beam scanning based on the determination that the number of unsuccessful repetitions exceeded the repetition threshold.

公开(公告)号：US20200178182A1

公开(公告)日：2020-06-04

申请号：US16783053

申请日：2020-02-05

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Mohammad Ali Tassoudji ,  Kobi Ravid ,  Yu-Chin Ou ,  Ozge Koymen ,  Junyi Li

IPC: H04W52/24 ,  H04B7/04

Abstract: Wireless communications systems and methods related to mitigation of calibration errors are provided. A base station (BS) transmits, via an antenna array including a plurality of antenna elements, a first communication signal using a first number of the plurality of antenna elements and a first transmission power level to a user equipment (UE). The BS receives from at least one UE, a measurement report based on the first communication signal. The BS transmitting a second communication signal using a second number of the plurality of antenna elements and a second transmission power level based on the one or more measurement reports. At least one of the first number of the plurality of antenna elements is different from the second number of the plurality of antenna elements, or the first transmission power level is different from the second transmission power level. Other aspects and features are also claimed and described.

公开(公告)号：US20200100191A1

公开(公告)日：2020-03-26

申请号：US16138880

申请日：2018-09-21

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Mohammad Ali Tassoudji ,  Kobi Ravid ,  Yu-Chin Ou ,  Ozge Koymen ,  Junyi Li

IPC: H04W52/24 ,  H04B7/04

Abstract: Wireless communications systems and methods related to mitigation of calibration errors are provided. A base station (BS) transmits, via an antenna array including a plurality of antenna elements, a first communication signal using a first number of the plurality of antenna elements and a first transmission power level to a user equipment (UE). The BS receives from at least one UE, a measurement report based on the first communication signal. The BS transmitting a second communication signal using a second number of the plurality of antenna elements and a second transmission power level based on the one or more measurement reports. At least one of the first number of the plurality of antenna elements is different from the second number of the plurality of antenna elements, or the first transmission power level is different from the second transmission power level. Other aspects and features are also claimed and described.

公开(公告)号：US20200077411A1

公开(公告)日：2020-03-05

申请号：US16513373

申请日：2019-07-16

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Alessio Marcone ,  Marco Papaleo ,  Junyi Li

IPC: H04W72/08 ,  H04W72/04

Abstract: Methods, systems, and devices for beamforming in environments with angular constraints are described. A wireless device such as a user equipment (UE) or base station may configure beam parameters based on a sensitivity level of a neighboring wireless device (e.g., a satellite). The configuration of beam parameters may be based on an interference power profile (e.g., threshold(s) indicated by an interference power profile). The interference power profile may specify a mask, which may indicate allowed or unintended directions for transmission or a transmission power mask. A beamformed transmission may be in accordance with the configured beam parameters, which may result in a reduced transmission power in one or more directions, compliance with total power limits, peak power limits, or energy radiated over a period of time, or any combination thereof.