公开(公告)号：US11729809B2

公开(公告)日：2023-08-15

申请号：US17143012

申请日：2021-01-06

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Tao Luo ,  Junyi Li

IPC: H04W72/541 ,  H04W76/15 ,  H04W72/044 ,  H04L41/0816 ,  H04W72/0446 ,  H04L5/14 ,  H04W72/56 ,  H04W88/06

CPC classification number: H04W72/541 ,  H04L5/14 ,  H04L41/0816 ,  H04W72/046 ,  H04W72/0446 ,  H04W72/56 ,  H04W76/15 ,  H04W88/06

Abstract: Dynamic time division duplex (TDD) is a flexible transmission technique allowing different user equipments (UEs) to operate in a downlink mode or an uplink mode depending on the instantaneous traffic load. As a result, a UE transmitting on an uplink channel may interfere with a neighboring UE receiving on a downlink channel. UEs may coordinate communication parameters to reduce cross-link interference. A UE may determine a preferred value(s) for a first communication parameter comprising a beam direction or a slot format index (SFI). The UE receives a candidate value(s) for the first communication parameter, the candidate value(s) being based on communications between a second UE and a first base station. The UE selects a first value among the preferred values based on the received candidate value(s); and initiates communications with a second base station using the first value for the first communication parameter.

公开(公告)号：US11728866B1

公开(公告)日：2023-08-15

申请号：US17804819

申请日：2022-05-31

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Kobi Ravid ,  Junyi Li

IPC: H04B7/06

CPC classification number: H04B7/0634 ,  H04B7/0617

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may receive, from a second network node, a first set of reference signals, wherein receiving the first set of reference signals comprises receiving each reference signal using a respective antenna element of the first network node. The first network node may transmit, to the second network node, a second set of reference signals, wherein the second set of reference signals is based on the first set of reference signals, and wherein each reference signal of the second set of reference signals is associated with an antenna element of the plurality of antenna elements of the first network node. The first network node may receive, from the second network node, an estimation report comprising estimation information associated with the second set of reference signals. Numerous other aspects are described.

公开(公告)号：US11705975B2

公开(公告)日：2023-07-18

申请号：US17332572

申请日：2021-05-27

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Tao Luo ,  Junyi Li

IPC: H04B17/12 ,  H04W24/10 ,  H04L5/00 ,  H04B7/06 ,  H04W52/36 ,  H04B7/0452 ,  H04W8/24

CPC classification number: H04B17/12 ,  H04B7/0452 ,  H04B7/0617 ,  H04L5/0051 ,  H04W8/24 ,  H04W24/10 ,  H04W52/367

Abstract: A base station may perform online calibration of antenna elements at two or more transmission reception points (TRPs) based on measurements by one or more user equipment (UEs). The base station may transmit a request for the one or more UEs to perform antenna calibration measurements, for the two or more TRPs, during measurement gaps. The base station may coordinate, among the two or more TRPs, transmission of reference signals during the measurement gaps. The base station may receive a report based on the antenna calibration measurements from the one or more UEs. The base station may calibrate one or more antenna elements of the two or more TRPs based on the antenna calibration measurements.

公开(公告)号：US20230180144A1

公开(公告)日：2023-06-08

申请号：US17544287

申请日：2021-12-07

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Tao Luo ,  Junyi Li

IPC: H04W52/24 ,  H04W52/14 ,  H04W52/36 ,  H04W52/54

CPC classification number: H04W52/245 ,  H04W52/54 ,  H04W52/143 ,  H04W52/367

Abstract: Methods, systems, and devices for wireless communications are described. Generally, a user equipment (UE) may transmit an indication to a base station that a total received power for the UE exceeds an overload threshold. In some cases, the indication may be an explicit request for a decrease in transmit power by a specific amount of reduction. The UE may transmit indications that the overload threshold is exceeded to multiple transmit/receive points. The indications may request specific transmit power reduction amounts that are specific to the TRPs, or may be generic indications that the overload threshold is exceeded, and the TRPs may coordinate to reduce their respective transmit powers to satisfy the overload threshold at the UE. The base station may allocate a first set of resources for near field UEs and a second set of resources for far field UEs.

公开(公告)号：US11671862B2

公开(公告)日：2023-06-06

申请号：US17450255

申请日：2021-10-07

Applicant: QUALCOMM Incorporated

Inventor： Marco Papaleo ,  Alessio Marcone ,  Vasanthan Raghavan ,  Peter Gaal ,  Guillaume Lebrun

IPC: H04W24/10 ,  H04L5/14 ,  H04W72/04 ,  H04W72/08 ,  H04W72/12 ,  H04W72/044 ,  H04W72/541 ,  H04W72/542

CPC classification number: H04W24/10 ,  H04L5/14 ,  H04W72/044 ,  H04W72/12 ,  H04W72/541 ,  H04W72/542

Abstract: Certain aspects of the present disclosure provide techniques for interference mitigation. An exemplary method performed by a base station generally includes determining, based on a location of another base station and information regarding the other base station, that the other base station is likely to experience interference while receiving an uplink transmission due to a downlink transmission by the base station and forming a null in a beam of the downlink transmission in a direction matching the location of the other base station.

公开(公告)号：US11658704B2

公开(公告)日：2023-05-23

申请号：US17534785

申请日：2021-11-24

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Raghu Narayan Challa ,  Mihir Vijay Laghate ,  Yuan Gao ,  Jun Zhu

IPC: H04B7/005 ,  H04W24/02 ,  H04B7/24

CPC classification number: H04B7/005 ,  H04B7/24 ,  H04W24/02

Abstract: Methods, systems, and devices for wireless communications are described. In some examples, a base station and a user equipment (UE) may utilize multi-port reference signals to determine a beam pair for rank-2 transmissions. For example, a UE may receive a set of multi-port reference signals, where each multi-port reference signal of the set corresponds to a unique beam pair and is received via two ports associated with two different polarizations. The UE may determine a spectral efficiency estimation for each multi-port reference signal of the set, select a beam pair associated with a multi-port reference signal with the highest determined spectral efficiency estimation of the set, and transmit an indication of the selected beam pair to the base station. Therefore, the UE and the base station may communicate using a beam pair which maximizes the spectral efficiency and rate of rank-2 transmissions.

公开(公告)号：US11622348B2

公开(公告)日：2023-04-04

申请号：US17193972

申请日：2021-03-05

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Tao Luo ,  Junyi Li

IPC: H04W72/14 ,  H04W72/0446 ,  H04W72/08

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine, for communications via a component carrier, to avoid one or more slot format indices (SFIs) associated with a set of configurations for a set of symbols; and transmit a request to avoid the one or more SFIs. Numerous other aspects are provided.

公开(公告)号：US20230073398A1

公开(公告)日：2023-03-09

申请号：US17468976

申请日：2021-09-08

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Mohammad Ali Tassoudji ,  Tao Luo ,  Junyi Li

IPC: H04W72/04 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may transmit signaling to an assistive node, and the assistive node may retransmit the signaling to a second wireless device. The assistive node may be configured with a mapping between receive beams and transmit beams at the assistive node. The mapping may enable the assistive node to receive signaling using a receive beam with a first beamwidth and retransmit the signaling using a transmit beam with a second, different beamwidth.

公开(公告)号：US11601917B2

公开(公告)日：2023-03-07

申请号：US17303559

申请日：2021-06-02

Applicant: QUALCOMM Incorporated

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

IPC: H04W4/00 ,  H04W72/02 ,  H04B7/06 ,  H04W72/0453 ,  H04W72/044

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a set of frequency components to use in sidelink operation based at least in part on an inter-band carrier aggregation configuration. In some aspects, the set of frequency components includes one or more frequency components in a first frequency band and one or more frequency components in a second frequency band. The UE may communicate with another UE over a sidelink using one or more beams that are selected based at least in part on channel conditions associated with the one or more frequency components in the first frequency band and channel conditions associated with the one or more frequency components in the second frequency band. Numerous other aspects are provided.

公开(公告)号：US20230069736A1

公开(公告)日：2023-03-02

申请号：US18047090

申请日：2022-10-17

Applicant: QUALCOMM Incorporated

Inventor： Junyi Li ,  Juergen Cezanne ,  Vasanthan Raghavan

IPC: H04W56/00 ,  H04W76/27 ,  H04W24/08

Abstract: Methods, systems, and devices for wireless communications are described. Different periodicities may be dynamically selected when monitoring and transmitting signaling used for link management, where respective periodicities may be based on the quality of the link between devices. For instance, a first wireless device may use a first monitoring periodicity to monitor for signals transmitted from another wireless device. Upon determining that a link condition has changed (e.g., decreased or reached a threshold), the first wireless device may decrease its monitoring periodicity (and increase monitoring frequency) to detect signals transmitted by the other wireless device more frequently. In such cases, the other wireless device may likewise transmit its measurement signals more often (e.g., in accordance with a second periodicity) based on the link quality. The adjusted monitoring and transmission periodicities may provide additional occasions for the wireless device to detect signals from another device.