公开(公告)号：US11728869B2

公开(公告)日：2023-08-15

申请号：US17454684

申请日：2021-11-12

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Tao Luo ,  Junyi Li

IPC: H04L5/12 ,  H04B7/06 ,  H04B7/0426 ,  H04B7/0456

CPC classification number: H04B7/0639 ,  H04B7/043 ,  H04B7/0482 ,  H04B7/0695

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine, based at least in part on at least one of a plurality of conditions being met, to switch from a static analog beamforming codebook to a dynamic analog beamforming beam weight calculation for selecting beam weights for communications between the UE and a base station. The UE may select the beam weights for the communications using the dynamic beam weight calculation. The UE may communicate, using the beam weights, with the base station. Numerous other aspects are described.

公开(公告)号：US20230247592A1

公开(公告)日：2023-08-03

申请号：US18146250

申请日：2022-12-23

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Sony Akkarakaran ,  Kang Yang ,  Shrenik Patel

IPC: H04W72/044 ,  H04W72/23 ,  H04W72/51

CPC classification number: H04W72/044 ,  H04W72/23 ,  H04W72/51

Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may transmit, to a second wireless device, capability control signaling indicating a first quantity of beam switches is supported within a first time period for a first antenna subarray, a first antenna module, or both, of the first wireless device. The first wireless device may receive from the second wireless device in accordance with the capability control signaling, a grant scheduling one or more messages and indicating a set of beams of the first wireless device over which to communicate the one or more messages in respective transmission time intervals (TTIs) of the first time period. The first wireless device may then transmit or receive, over the first time period using the first antenna subarray, the first antenna module, or both, the one or more messages using the set of beams.

公开(公告)号：US20230246789A1

公开(公告)日：2023-08-03

申请号：US18133330

申请日：2023-04-11

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Tao Luo ,  Junyi Li

IPC: H04L5/00

CPC classification number: H04L5/006 ,  H04L5/0046 ,  H04L5/0094

Abstract: Methods, systems, and devices for wireless communications are described. In some examples, a wireless communications system may support group channel quality indicator (CQI) reporting. For example, a user equipment (UE) may receive, from a base station, signaling indicating a group of component carriers (CCs) and one or more subbands within the group of CCs. The UE may receive one or more reference signals within the one or more subbands and determine a group CQI index corresponding to the group of CCs based at least in part on the one or more reference signals. The UE may then transmit a report to the base station indicating the group CQI index and the base station may determine a CQI index for each of the one or more subbands based on the group CQI index.

公开(公告)号：US11711128B2

公开(公告)日：2023-07-25

申请号：US17467107

申请日：2021-09-03

Applicant: QUALCOMM INCORPORATED

Inventor： Muhammad Nazmul Islam ,  Bilal Sadiq ,  Ashwin Sampath ,  Sundar Subramanian ,  Junyi Li ,  Vasanthan Raghavan

IPC: H04B7/06 ,  H04L5/00 ,  H04W24/10 ,  H04W72/04 ,  H04B7/0456 ,  H04W16/28 ,  H04W72/044 ,  H04W88/02

CPC classification number: H04B7/0617 ,  H04B7/0456 ,  H04B7/0621 ,  H04B7/0695 ,  H04L5/0048 ,  H04W16/28 ,  H04W24/10 ,  H04W72/046 ,  H04W88/02

Abstract: Methods, systems, and devices for wireless communication are described. A network device, such as a base station, may transmit a request message to a user equipment (UE). The request message may include a request for the UE to transmit a set of sounding reference signals (SRSs). The set of SRSs may include two (or more) beamformed signals. The network device may receive the set of SRSs according to the request message. The network device may identify, based on a co-phasing parameter associated with the two (or more) beamformed signals, an antenna port precoder configuration to use for communicating with the UE.

公开(公告)号：US11695462B2

公开(公告)日：2023-07-04

申请号：US16748754

申请日：2020-01-21

Applicant: QUALCOMM incorporated

Inventor： Vasanthan Raghavan ,  Jung Ho Ryu ,  Junyi Li

IPC: H04B7/06 ,  H04B7/024 ,  H04L5/00 ,  H04B7/0417 ,  H04B7/0408

CPC classification number: H04B7/0695 ,  H04B7/024 ,  H04B7/0408 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0626 ,  H04L5/0051

Abstract: Methods, systems, and devices for wireless communications that support coordinated beamforming in millimeter wave (mmW) systems. A user equipment (UE) may indicate a number of supported antennas for signal reception. A plurality of transmission-reception points (TRxPs) may coordinate a beam training with the supported antennas, in determining a beam estimation for coordinated reception at the UE. The coordinated beam training may be carried over combined beams of the associated TRxPs, and may be based on co-phasing factors within a single antenna panel for each of the TRxPs. Based on the coordinated beam training, the UE may determine a matched filtering beam estimate for reception and receive coordinated beamformed transmissions from the plurality of TRxPs as part of coordinated multipoint (CoMP) transmissions.

公开(公告)号：US11664866B2

公开(公告)日：2023-05-30

申请号：US17180675

申请日：2021-02-19

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Junyi Li

IPC: H04B7/06 ,  H04B17/318 ,  H04B7/08

CPC classification number: H04B7/0617 ,  H04B7/0632 ,  H04B7/088 ,  H04B17/318

Abstract: Aspects are provided which allow a transmitting device to provide reference signals to a receiving device for beam management according to an arbitrarily determined sequence of transmission beams at any time, and to implicitly convey information regarding the determined sequence of transmission beams to the receiving device. The transmitting device provides a message to the receiving device indicating a beam sequence conveyance mode. The transmitting device subsequently determines a sequence of different transmission beams, and associates a reference signal with each one of the transmission beams for transmission to the receiving device according to the sequence. The receiving device obtains the plurality of reference signals from the transmitting device, where each of the reference signals is associated with a different transmission beam. The receiving device identifies a reception beam for each of the transmission beams, and determines a sequence of the transmission beams in response to the identification.

公开(公告)号：US20230163938A1

公开(公告)日：2023-05-25

申请号：US18158749

申请日：2023-01-24

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Tao Luo ,  Junyi Li

IPC: H04L5/14 ,  H04W72/0453

CPC classification number: H04L5/14 ,  H04W72/0453

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for indication of asymmetric default operating frequencies (DOFs) for bidirectional communications. In one aspect, a first device may report to the second device that the first device is using either a same DOF for communications in different transmission directions or different DOFs for the different transmission directions. Based on the reported DOF(s), the second device may use beam correspondence-based beam relationships on the different transmission directions if the DOFs are the same and resource block allocations for the communications in both transmission directions are closely matched in frequencies. Alternatively, if the DOFs are different for the different transmission directions, the second device may adjust either a codebook parameter or may use an appropriate antenna panel. Additionally, or alternatively, the second device may direct the first device to use respective antenna subarrays with similar DOFs.

公开(公告)号：US20230130505A1

公开(公告)日：2023-04-27

申请号：US18047835

申请日：2022-10-19

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/0456 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit a synchronization signal block (SSB) burst set including a first set of SSBs transmitted using a first codebook and a second set of SSBs transmitted using a second codebook. In some cases, the first codebook may be configured for beamforming at a first transmission distance range (e.g., for far field transmissions) and the second codebook may be configured for beamforming at a second transmission distance range (e.g., for near field transmissions). Based on transmitting the SSB burst, the base station may receive an indication of a first SSB from the first set or the second set from a user equipment (UE). The base station may then communicate messages to the UE using a transmission beam and codebook associated with the first SSB indicated by the UE.

公开(公告)号：US11622335B2

公开(公告)日：2023-04-04

申请号：US16923953

申请日：2020-07-08

Applicant: QUALCOMM Incorporated

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

IPC: H04W52/14 ,  H04W4/23 ,  H04W4/90 ,  H04L1/00 ,  H04W4/06 ,  H04W52/28 ,  H04W72/04 ,  H04W52/24 ,  H04W92/18 ,  H04W72/044

Abstract: Certain aspects of the present disclosure provide techniques for priority-based transmit power control. A method that may be performed by a user equipment (UE) includes communicating with at least a second UE via a link, determining a transmission power for transmitting information via the link based, at least in part, on a priority corresponding to the information, and outputting the information for transmission via the link in accordance with the determined transmission power.

公开(公告)号：US11621758B2

公开(公告)日：2023-04-04

申请号：US17457896

申请日：2021-12-06

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Mohammad Ali Tassoudji ,  Raghu Narayan Challa ,  Brian Clarke Banister

IPC: H04L1/02 ,  H04B7/06 ,  H04B17/318 ,  H04B17/373 ,  H04B7/0413

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with other network devices as part of a wireless communications system. The UE may identify a blockage corresponding to one or more antenna arrays of a set of antenna arrays based on using a first set of beam weights, which may correspond to a static beamforming codebook of the one or more antenna arrays. The UE may switch from a static beamforming codebook-based beam weight determination to a dynamic beamforming codebook-based beam weight determination. The UE may then determine a second set of beam weights to use for the one or more antenna arrays based on the dynamic beamforming codebook-based beam weight determination. The UE may then communicate using the one or more antenna arrays according to the second set of beam weights.