公开(公告)号：US20230126013A1

公开(公告)日：2023-04-27

申请号：US17508680

申请日：2021-10-22

Applicant: QUALCOMM Incorporated

Inventor： Sarath Pinayour Chandrasekaran ,  Satish Kumar

IPC: H04W74/00 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may transmit a first random access preamble to a base station and may transmit a payload associated with the first random access preamble via a first random access message as part of a two-step random access procedure. The base station may receive the first random access message and attempt to detect the first random access preamble. The base station may identify multiple random access preamble indices based on a detected random access preamble and may perform multiple decoding attempts on the payload portion of the first random access message using the multiple random access preamble indices. The base station may perform the multiple decoding attempts sequentially until one decoding attempt is successful or may perform the multiple decoding attempts in parallel.

公开(公告)号：US11923991B2

公开(公告)日：2024-03-05

申请号：US17103259

申请日：2020-11-24

Applicant: QUALCOMM Incorporated

Inventor： Satish Kumar ,  Siva Naga Raju Undrakunta ,  Harika Lavanuru ,  Sarath Pinayour Chandrasekaran ,  Loksiva Paruchuri ,  Ashok Kumar Tripathi ,  Raja Sekhar Bachu

IPC: H04L1/24 ,  H04L1/20 ,  H04L5/00

CPC classification number: H04L1/248 ,  H04L1/206 ,  H04L5/0048 ,  H04L5/0051

Abstract: Certain aspects of the present disclosure provide techniques for dynamic configuration of demodulation reference signals (DMRSs). A method that may be performed by a base station (BS) includes receiving one or more uplink signals from at least one user equipment (UE); estimating a Doppler shift associated with the one or more uplink signals; determining a density of reference signals (RSs) within a slot for the at least one UE based, at least in part, on the estimated Doppler shift associated with the one or more uplink signals; and transmitting information to the at least one UE indicating an allocation of RS resources for the UE, wherein the allocation of the RS resources is based on the density of the RSs for the at least one UE.

公开(公告)号：US20230092369A1

公开(公告)日：2023-03-23

申请号：US17480478

申请日：2021-09-21

Applicant: QUALCOMM Incorporated

Inventor： Satish Kumar ,  Sarath Pinayour Chandrasekaran ,  Gabi Sarkis

IPC: H04B7/155

Abstract: Methods, systems, and devices for wireless communications are described. Aspects of the present disclosure relate to an in-coverage user equipment (UE) relaying broadcast messages to out-of-coverage UEs using one or more messaging techniques over a sidelink channel. The in-coverage UE may monitor for broadcast messages to relay the broadcast messages to out-of-coverage UEs. In some cases, the in-coverage UE may determine to relay broadcast messages to the out-of-coverage UEs based on one or more metrics. Additionally, the in-coverage UE may determine whether the broadcast message is to be included in a groupcast, broadcast, or unicast signaling. Based on the determination to relay broadcast messages, as well as whether the alert message is to be included in a groupcast, broadcast, or unicast signaling, the in-coverage UE may leverage sidelink communications to relay broadcast messages to the out-of-coverage UEs.

公开(公告)号：US12284129B2

公开(公告)日：2025-04-22

申请号：US17663094

申请日：2022-05-12

Applicant: QUALCOMM Incorporated

Inventor： Satish Kumar ,  Sarath Pinayour Chandrasekaran ,  Xiaoxia Zhang

IPC: H04L5/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive an indication of a non-uniform density associated with a phase-tracking reference signal (PT-RS). Accordingly, the UE may transmit, or receive, within a slot, wherein the slot includes the PT-RS at the non-uniform density across a plurality of symbols of the slot. For example, the non-uniform density may be applied based on an offset between the slot and a previous downlink slot including a demodulation reference signal. Numerous other aspects are described.

公开(公告)号：US12200754B2

公开(公告)日：2025-01-14

申请号：US17508680

申请日：2021-10-22

Applicant: QUALCOMM Incorporated

Inventor： Sarath Pinayour Chandrasekaran ,  Satish Kumar

IPC: H04W74/00 ,  H04W74/0833 ,  H04W76/10

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may transmit a first random access preamble to a base station and may transmit a payload associated with the first random access preamble via a first random access message as part of a two-step random access procedure. The base station may receive the first random access message and attempt to detect the first random access preamble. The base station may identify multiple random access preamble indices based on a detected random access preamble and may perform multiple decoding attempts on the payload portion of the first random access message using the multiple random access preamble indices. The base station may perform the multiple decoding attempts sequentially until one decoding attempt is successful or may perform the multiple decoding attempts in parallel.

公开(公告)号：US12267259B2

公开(公告)日：2025-04-01

申请号：US17516455

申请日：2021-11-01

Applicant: QUALCOMM Incorporated

Inventor： Satish Kumar ,  Sarath Pinayour Chandrasekaran ,  Xiaoxia Zhang

IPC: H04L5/00 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/20

Abstract: Certain aspects of the present disclosure provide a method for wireless communication by a user equipment (UE). The UE receives an indication of a phase tracking reference signal (PTRS) hopping offset from a network entity. The UE may process PTRSs transmitted in different transmissions across multiple symbols or time slots. In one example, processing the PTRSs may include transmitting the PTRSs in uplink (UL) slots. In another example, processing the PTRSs may include monitoring for the PTRSs in downlink (DL) slots. Frequency resources for the PTRSs may change across the different transmissions based on the PTRS hopping offset.

公开(公告)号：US11778477B2

公开(公告)日：2023-10-03

申请号：US17304196

申请日：2021-06-16

Applicant: QUALCOMM Incorporated

Inventor： Sarath Pinayour Chandrasekaran ,  Satish Kumar ,  Loksiva Paruchuri

IPC: H04W16/10 ,  H04W72/04 ,  H04W48/16 ,  H04W72/0446 ,  H04W72/0453 ,  H04W24/10 ,  H04W72/23

CPC classification number: H04W16/10 ,  H04W24/10 ,  H04W48/16 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/23

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may extract information from a neighboring base station with cell coverage that overlaps cell coverage of the base station. The base station may determine, from the information, one or more locations of control resource sets (CORESETs) used by the neighboring base station. The base station may select resources that do not overlap with the CORESETs used by the neighboring base station. The base station may transmit a communication using the selected resources. Numerous other aspects are described.

公开(公告)号：US20230284298A1

公开(公告)日：2023-09-07

申请号：US17684161

申请日：2022-03-01

Applicant: QUALCOMM Incorporated

Inventor： Satish Kumar ,  Sarath Pinayour Chandrasekaran ,  Gabi Sarkis

IPC: H04W76/14 ,  H04W4/12

CPC classification number: H04W76/14 ,  H04W4/12 ,  H04W92/18

Abstract: Methods, systems, and devices for wireless communications are described. A first network entity may establish a sidelink connection with a first user equipment (UE). The first network entity may detect sidelink communications including sidelink data from the first UE, and may forward the detected sidelink data to a second network entity via a sidelink interface or a backhaul link. The second network entity may transmit the sidelink data to a second UE via a sidelink connection between the second network entity and the second UE.

公开(公告)号：US11728880B2

公开(公告)日：2023-08-15

申请号：US17480478

申请日：2021-09-21

Applicant: QUALCOMM Incorporated

Inventor： Satish Kumar ,  Sarath Pinayour Chandrasekaran ,  Gabi Sarkis

IPC: H04B7/15 ,  H04B7/155

CPC classification number: H04B7/15507

Abstract: Methods, systems, and devices for wireless communications are described. Aspects of the present disclosure relate to an in-coverage user equipment (UE) relaying broadcast messages to out-of-coverage UEs using one or more messaging techniques over a sidelink channel. The in-coverage UE may monitor for broadcast messages to relay the broadcast messages to out-of-coverage UEs. In some cases, the in-coverage UE may determine to relay broadcast messages to the out-of-coverage UEs based on one or more metrics. Additionally, the in-coverage UE may determine whether the broadcast message is to be included in a groupcast, broadcast, or unicast signaling. Based on the determination to relay broadcast messages, as well as whether the alert message is to be included in a groupcast, broadcast, or unicast signaling, the in-coverage UE may leverage sidelink communications to relay broadcast messages to the out-of-coverage UEs.

公开(公告)号：US11716675B2

公开(公告)日：2023-08-01

申请号：US17190164

申请日：2021-03-02

Applicant: QUALCOMM Incorporated

Inventor： Satish Kumar ,  Sarath Pinayour Chandrasekaran

IPC: H04W48/14 ,  H04W48/16 ,  H04W74/08 ,  H04W72/23

CPC classification number: H04W48/14 ,  H04W48/16 ,  H04W72/23 ,  H04W74/0833

Abstract: A first base station is disclosed. The first base station may transmit, to a second BS, at least one PRACH preamble for requesting OSI. The first base station may receive a PDCCH and an associated PDSCH, the PDSCH including the OSI. Prior to transmitting the at least one PRACH, the first base station may scan for neighboring BSs. The first base station may determine, based on first quality metrics associated with the neighboring BSs, a set of BSs, the set of BSs including the second BS. The first station may obtain a MIB and at least one SIB from each of the set of BSs. The at least one PRACH preamble may be transmitted to the second BS based on the obtained MIB and the at least one SIB from the second BS.