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公开(公告)号：US20240356585A1
公开(公告)日：2024-10-24
申请号：US18258536
申请日：2021-02-07
Applicant: QUALCOMM Incorporated
Inventor： Hung Dinh LY , Yu ZHANG , Saeid SAHRAEI , Krishna Kiran MUKKAVILLI
CPC classification number: H04B7/04013 , H04L5/0051 , H04L5/0094
Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a configuration for a transmission configuration state for receiving downlink channel transmissions from a base station via a configurable surface. The transmission configuration state may indicate a quasi-co-location source associated with transmission via the configurable surface. The UE may receive a downlink channel transmission via the configurable surface based on the transmission configuration state and the quasi-co-location source. The UE may be capable of determining whether the transmission configuration state conflicts with the quasi-co-location source indicated by the transmission configuration state. The UE may transmit an indication to the base station that the configuration for the transmission configuration state conflicts with the quasi-co-location source. The indication may include a beam failure indication or a measurement report. The UE may fall back to a transmission configuration state previously activated at the UE.
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公开(公告)号：US20240235623A1
公开(公告)日：2024-07-11
申请号：US18559988
申请日：2021-07-12
Applicant: QUALCOMM INCORPORATED
Inventor： Saeid SAHRAEI , Ahmed ELSHAFIE , Hung Dinh LY , Yu ZHANG , Hwan Joon KWON , Krishna Kiran MUKKAVILLI
IPC: H04B7/04 , H04B7/0408 , H04B7/06 , H04B7/145
CPC classification number: H04B7/04013 , H04B7/0408 , H04B7/0623 , H04B7/145
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a controller of a reconfigurable reflective surface may receive or determine configuration information for a set of reflective elements of the reconfigurable reflective surface, wherein the configuration information indicates a set of reflective matrices associated with indicating reconfigurable reflective surface information to a user equipment (UE), wherein the configuration information indicates the UE, and wherein the configuration information is associated with reflecting a signal in a sub-band, of multiple sub-bands, of a base station. The controller may configure the set of reflective elements to indicate the reconfigurable reflective surface information via the signal as reflected by the reconfigurable reflective surface. Numerous other aspects are described.
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公开(公告)号：US20240235622A1
公开(公告)日：2024-07-11
申请号：US18558715
申请日：2021-07-12
Applicant: QUALCOMM Incorporated
Inventor： Saeid SAHRAEI , Ahmed ELSHAFIE , Yu ZHANG , Hung Dinh LY , Krishna Kiran MUKKAVILLI
CPC classification number: H04B7/04013 , H04B7/026
Abstract: Methods, systems, and devices for wireless communications are described. A reconfigurable reflective surface may exploit signals transmitted from a user equipment (UE) to communicate feedback to a base station. For example, the surface may communicate feedback by reflecting two or more reference signals according to two or more configurations. In some cases, the two or more configurations may be phase shifted relative each other. In another example, the surface may communicate feedback by altering the intensity of or more reference signals transmitted from the UE. In yet another example, the surface may communicate feedback to the base station by reflecting reference signals towards one or more antenna arrays. In some cases, the one or more antenna arrays may be located at a single base station. In some other cases, the one or more antenna arrays may be located at multiple base stations or multiple transmission/reception points.
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公开(公告)号：US20240107423A1
公开(公告)日：2024-03-28
申请号：US18273512
申请日：2021-03-16
Applicant: QUALCOMM Incorporated
Inventor： Hung Dinh LY , Yu ZHANG , Saeid SAHRAEI , Krishna Kiran MUKKAVILLI
CPC classification number: H04W48/02 , H04B7/04013 , H04W36/08
Abstract: A method, apparatus, and system for barring at least one UE from communicating with one or more RISs is disclosed. A base station may determine to bar at least one UE from communicating with one or more RISs of a plurality of RISs. The base station may transmit, to the at least one UE, a barring indication for the one or more RISs. The barring indication may identify the one or more RISs with which the at least one UE is barred from communicating. The UE may determine to refrain from communicating with the one or more RISs based on the barring indication. The UE may communicate with the base station based on the determination to refrain from communicating with the one or more RISs.
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公开(公告)号：US20240097742A1
公开(公告)日：2024-03-21
申请号：US18261992
申请日：2021-03-15
Applicant: QUALCOMM Incorporated
Inventor： Hung Dinh LY , Saeid SAHRAEI , Yu ZHANG , Krishna Kiran MUKKAVILLI
CPC classification number: H04B7/04013 , H04W74/0833
Abstract: Methods, systems, and devices for wireless communications are described. In a wireless communications system, a user equipment (UE) may receive an indication of a configuration (e.g., via control signaling) of a set of reconfigurable intelligent surfaces (RISs). The UE may select a primary RIS for bidirectional wireless communication (e.g., uplink and downlink) and one or more secondary RISs for unidirectional wireless communication (e.g., uplink or downlink) based on the configuration. The UE may use the one or more secondary RISs to enable higher throughput and extended coverage in the wireless communication system. The UE may communicate with the base station using the primary RIS, or the secondary RIS, or both.
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Patent Agency Ranking
公开(公告)号：US20230283332A1
公开(公告)日：2023-09-07
申请号：US18173482
申请日：2023-02-23
Applicant: QUALCOMM Incorporated
Inventor： Saeid SAHRAEI , Gokul SRIDHARAN , Shimman Arvind PATEL , Krishna Kiran MUKKAVILLI , June NAMGOONG , Taesang YOO , Renqiu WANG
IPC: H04B7/0456 , H04B7/06 , H04W72/23
CPC classification number: H04B7/0465 , H04B7/0634 , H04W72/23
Abstract: Methods, systems, and devices for wireless communications are described in which a base station may identify a null space matrix that lies within a null space of an effective channel matrix for communications between the base station and a user equipment (UE). An indication of the null space matrix may be provided to the UE, and the null space matrix used to determine modifications to a precoding matrix. The base station and UE may determine a redistribution matrix that provides a reduced variance of transmission powers for a number of transmission channels, where a product of the null space matrix and the redistribution matrix may be computed and added to the precoding matrix to generate a modified precoding matrix. The modified precoding matrix may be used to generate the communications from the base station and UE with reduced power variance across channels.
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公开(公告)号：US20230216572A1
公开(公告)日：2023-07-06
申请号：US17568682
申请日：2022-01-04
Applicant: QUALCOMM Incorporated
Inventor： Ahmed ELSHAFIE , Saeid SAHRAEI , Yu ZHANG , Hung Dinh LY
IPC: H04B7/06 , H04W72/08 , H01Q3/46 , H04B7/0426
CPC classification number: H04B7/0695 , H01Q3/46 , H04B7/043 , H04B7/0617 , H04W72/085
Abstract: Various aspects to reduce interferences in presence of a reconfigurable intelligent surface (RIS) are provided. In an aspect, a first device perform a first transmission using a first set of beams of the first device in response to an activated RIS for serving a second device to facilitate communication between the first device and the second device not being present. The first device may further perform a second transmission using a second set of beams of the first device in response to the activated RIS being present, the second set of beams being a subset of the first set of beams that excludes one or more beams of the first set of beams.
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公开(公告)号：US20220070039A1
公开(公告)日：2022-03-03
申请号：US17305274
申请日：2021-07-02
Applicant: QUALCOMM Incorporated
Inventor： Hung Dinh LY , Saeid SAHRAEI , Muhammad Sayed Khairy ABDELGHAFFAR , Renqiu WANG , Krishna Kiran MUKKAVILLI
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, information indicating at least one of a first set of peak reduction tones (PRTs) for uplink communication, or a second set of PRTs for downlink communication, for use in a full-duplex communication mode. The first set of PRTs and the second set of PRTs may share at least one PRT. The UE may transmit, to the base station, or receive, from the base station, at least one signal based at least in part on the at least one of the first set of PRTs or the second set of PRTs. Numerous other aspects are provided.
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公开(公告)号：US20220039093A1
公开(公告)日：2022-02-03
申请号：US17391922
申请日：2021-08-02
Applicant: QUALCOMM Incorporated
Inventor： Hung Dinh LY , Saeid SAHRAEI , Gokul SRIDHARAN , Krishna Kiran MUKKAVILLI
IPC: H04W72/04
Abstract: Aspects relate using peak reduction tones on a supplementary uplink to reduce peak to average power ratio on the supplementary uplink. For example, when a UE elects to switch from a primary carrier (e.g., a 5G NR carrier) to an SUL carrier (e.g., in a limited coverage scenario), the UE may use a defined set of PRTs to transmit data on the SUL carrier. In some examples, PRTs may be used on multiple carriers. For example, a first set of PRTs may be defined for an SUL carrier and a second set of PRTs may be defined for another carrier.
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公开(公告)号：US20210377090A1
公开(公告)日：2021-12-02
申请号：US17332856
申请日：2021-05-27
Applicant: QUALCOMM Incorporated
Inventor： Saeid SAHRAEI , Gokul SRIDHARAN , Peter GAAL , Krishna Kiran MUKKAVILLI , June NAMGOONG
Abstract: Aspects of the disclosure relate to selection and use of peak reduction tones (PRTs) including obtaining a predetermined sequence of PRTs corresponding to a set of granted resources including a plurality of tones, mapping a set of data to a first subset of the plurality of tones outside of the predetermined sequence of PRTs and mapping a set of PRTs to a second subset of the plurality of tones within the predetermined sequence of PRTs. At least one peak of a time domain representation of the first subset of the plurality of tones is canceled using a time domain representation of the second subset of the plurality of tones. A transmitted waveform comprising the first subset of the plurality of tones and the second subset of the plurality of tones is transmitted.
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