公开(公告)号：US20250088220A1

公开(公告)日：2025-03-13

申请号：US18727589

申请日：2022-03-30

Applicant: QUALCOMM Incorporated

Inventor： Saeid SAHRAEI ,  Yu ZHANG ,  Krishna Kiran MUKKAVILLI

IPC: H04B7/04 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. A first device may include reflective elements and may reflect signals between a second and third device using the reflective elements. In some cases, the first device may receive signaling from the second device indicating a first subset of the reflective elements corresponding to a first phase configuration and a second subset of the reflective elements corresponding to a second phase configuration. In some other cases, the first device may receive signaling indicating a transmission beam of the second device. Here, the first device may identify the first and second subsets of the reflective elements based on an angle of arrival and departure associated with the indicated transmission beam. In either case, the first device may set the phase configurations of the reflective elements according to the first and second subsets.

公开(公告)号：US20240284289A1

公开(公告)日：2024-08-22

申请号：US18546934

申请日：2021-04-16

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh LY ,  Yu ZHANG ,  Saeid SAHRAEI

IPC: H04W36/30 ,  H04B7/04 ,  H04W36/00

CPC classification number: H04W36/30 ,  H04B7/04013 ,  H04W36/0085

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a first set of reference signals and a second set of reference signals from a base station, where the second set of reference signals are reflected from a first passive device operating as a reconfigurable intelligent surface (RIS). The UE may communicate with the base station in consideration of the first passive device. Numerous other aspects are described.

公开(公告)号：US20240244555A1

公开(公告)日：2024-07-18

申请号：US18562371

申请日：2021-07-24

Applicant: QUALCOMM Incorporated

Inventor： Yu ZHANG ,  Wanshi CHEN ,  Saeid SAHRAEI ,  Krishna Kiran MUKKAVILLI ,  Hwan Joon KWON ,  Tingfang JI ,  Peter GAAL ,  Naga BHUSHAN

IPC: H04W56/00 ,  H04B7/04

CPC classification number: H04W56/0045 ,  H04W56/0005 ,  H04B7/04013

Abstract: Schemes and mechanisms for timing advance adjustment are provided. In a method for wireless communication, a BS transmits, to a user equipment (UE), a first timing offset configuration associated with a first reconfigurable intelligent surface (RIS) state and a second timing offset configuration associated with a second RIS state. The BS transmits, to the UE, a timing offset indication indicating one of the first timing offset configuration or the second timing offset configuration. The BS receives, from the UE based on the timing offset indication, an uplink (UL) communication.

公开(公告)号：US20240022367A1

公开(公告)日：2024-01-18

申请号：US17812643

申请日：2022-07-14

Applicant: QUALCOMM Incorporated

Inventor： Saeid SAHRAEI ,  Muhammad Sayed Khairy ABDELGHAFFAR ,  Renqiu WANG ,  Joseph Patrick BURKE ,  Tingfang JI ,  Vijay KUMARAVELU

IPC: H04L5/00 ,  H04B7/06

CPC classification number: H04L5/0048 ,  H04B7/0686

Abstract: Aspects are provided which allow a network entity to consider an identity property for received RS during analog combining or aggregation in order to achieve efficient channel sounding and estimation. The network entity may receive an RS in a time period via a plurality of antenna elements. The network entity may combine, in an analog domain, the RS received via each of the antenna elements based at least in part on weights associated with the antenna elements. At least one weight of the weights changes over the time period, and the weights are elements of a time domain orthogonal cover code or a DFT matrix. As a result of these weights, the network entity may estimate multiple combined or individual channels of antenna elements or groups from one or more RS in one or more symbols, potentially improving UE energy efficiency, efficient resource allocation, and coherency between the antenna elements.

公开(公告)号：US20230318696A1

公开(公告)日：2023-10-05

申请号：US17711776

申请日：2022-04-01

Applicant: QUALCOMM Incorporated

Inventor： Saeid SAHRAEI ,  Yu ZHANG ,  Krishna Kiran MUKKAVILLI

IPC: H04B7/155 ,  H04W72/04 ,  H04W72/10 ,  H04L5/00

CPC classification number: H04B7/15542 ,  H04B7/15507 ,  H04W72/046 ,  H04W72/0446 ,  H04W72/0433 ,  H04W72/10 ,  H04L5/0023

Abstract: Some aspects described herein relate to receiving, at a reconfigurable intelligent surface (RIS), a first configuration having a time interval for applying the first configuration to reflect signals from a network node, applying the first configuration to multiple antenna elements on the RIS for the time interval, and applying, based on expiration of the time interval, a second configuration, that is different from the first configuration, to the multiple antenna elements on the RIS. Other aspects relate to prioritizing configurations. Additional aspects relate to transmitting a default configuration and/or dynamic configuration to the RIS.

公开(公告)号：US20230275635A1

公开(公告)日：2023-08-31

申请号：US17652804

申请日：2022-02-28

Applicant: QUALCOMM Incorporated

Inventor： Saeid SAHRAEI ,  Muhammad Sayed Khairy ABDELGHAFFAR ,  Renqiu WANG ,  Lu YUAN ,  Joseph Patrick BURKE ,  Tingfang JI ,  Peter GAAL

IPC: H04B7/06 ,  H04B7/0426 ,  H04L25/02

CPC classification number: H04B7/0626 ,  H04B7/0695 ,  H04B7/043 ,  H04L25/0224

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network entity may receive a sounding reference signal (SRS) at a multi-panel system of the network entity, where the multi-panel system includes one or more sounded panels and one or more non-sounded panels. The network entity may estimate a channel to obtain channel state information (CSI) for the one or more sounded panels based at least in part on the SRS. The network entity may estimate CSI for the one or more non-sounded panels based at least in part on the CSI for the one or more sounded panels. The network entity may transmit or receive a communication based at least in part on the CSI for the one or more sounded panels and the CSI for the one or more non-sounded panels. Numerous other aspects are described.

公开(公告)号：US20250119182A1

公开(公告)日：2025-04-10

申请号：US18865810

申请日：2022-08-02

Applicant: QUALCOMM Incorporated

Inventor： Ahmed ELSHAFIE ,  Yu ZHANG ,  Hung Dinh LY ,  Huilin XU ,  Zhikun WU ,  Saeid SAHRAEI ,  Peter GAAL

IPC: H04B7/04 ,  H04W16/28

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 associated with a reconfigurable intelligent surface (RIS), positioning information associated with the RIS. The first network node may communicate, with a third network node, using a beam of a set of beams that is configured based at least in part on the positioning information. Numerous other aspects are described.

公开(公告)号：US20240413855A1

公开(公告)日：2024-12-12

申请号：US18701530

申请日：2021-12-10

Applicant: QUALCOMM Incorporated

Inventor： Ahmed ELSHAFIE ,  Hung Dinh LY ,  Yu ZHANG ,  Saeid SAHRAEI ,  Krishna Kiran MUKKAVILLI

IPC: H04B7/04 ,  H04B17/318 ,  H04B17/336 ,  H04L5/00

Abstract: Certain aspects of the present disclosure provide techniques for wireless communication by a network entity. For example, the network entity defines a size of reconfigurable intelligent surface (RIS) elements. The network entity further defines a set of patterns representing active RIS elements and/or inactive RIS elements, based on the size of RIS elements. The network entity transmits an indication of the size of RIS elements and the set of patterns to a RIS controller.

公开(公告)号：US20240275432A1

公开(公告)日：2024-08-15

申请号：US18567672

申请日：2021-08-27

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh LY ,  Saeid SAHRAEI ,  Yu ZHANG ,  Krishna Kiran MUKKAVILLI

IPC: H04B7/04

CPC classification number: H04B7/04013

Abstract: A passive multiple-input multiple-output (P-MIMO) method that may be performed by a reconfigurable intelligent surface (RIS) includes applying a first voltage set to one or more unit cells of the RIS for reflecting a downlink signal from a first wireless communication device to a second wireless communication device. The method includes applying a second voltage set to the one or more unit cells of the RIS for reflecting an uplink signal from the second wireless communication device to the first wireless communication device.

公开(公告)号：US20240187040A1

公开(公告)日：2024-06-06

申请号：US18553457

申请日：2021-06-10

Applicant: QUALCOMM incorporated

Inventor： Saeid SAHRAEI ,  Ahmed ELSHAFIE ,  Hung Dinh LY ,  Yu ZHANG ,  Krishna Kiran MUKKAVILLI

IPC: H04B7/04 ,  H04L5/00 ,  H04L25/02

CPC classification number: H04B7/04013 ,  H04L5/005 ,  H04L25/0224

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first device (310) may receive multiple reference signals (RSs) from a second device (320) via a plurality of passive devices (410,420), where each RS of the multiple RSs is forwarded individually by one of the plurality of passive devices with a first set of reflection configurations (Slot 502, Slot 504). The first device may receive an additional RS from the second device via the plurality of passive devices, where the additional RS is forwarded jointly by all of the plurality of passive devices with a second set of reflection configurations (Slot 506). The first device may determine information from the plurality of passive devices based on the multiple RSs and the additional RS, where the information is represented by a change between the first set of reflection configurations and the second set of reflection configurations. Numerous other aspects are described.