公开(公告)号：US12156167B2

公开(公告)日：2024-11-26

申请号：US17759073

申请日：2020-02-07

Applicant: QUALCOMM Incorporated

Inventor： Qiang Wu ,  Xiao Feng Wang ,  Huilin Xu ,  Iyab Issam Sakhnini ,  Dan Zhang ,  Yiqing Cao ,  Jun Ma

IPC: H04W64/00

Abstract: Disclosed are techniques for positioning. A receiver receives complementary timing information associated with the positioning reference signals (PRS) of a repetition of a PRS sequence. The complementary timing information distinguishes a repetition of a PRS sequence from remaining repetitions of the PRS sequence. Based on the complementary timing information associated with different PRS from different non-terrestrial vehicles indicating that the PRS were transmitted during the same radio frame, the receiver can determine an observed time difference of arrival (OTDOA) between the PRS received from the respective non-terrestrial vehicles.

公开(公告)号：US12137476B2

公开(公告)日：2024-11-05

申请号：US17776640

申请日：2019-11-14

Applicant: Qualcomm Incorporated

Inventor： Qiaoyu Li ,  Chao Wei ,  Hao Xu ,  Huilin Xu ,  Jing Lei ,  Peter Pui Lok Ang ,  Wanshi Chen ,  Le Liu ,  Yiqing Cao ,  Peter Gaal

IPC: H04W74/04 ,  H04W74/00 ,  H04W74/0833

Abstract: A low complexity user equipment (UE) may be in communication with another UE (e.g., with a premium UE or more capable UE) via a device-to-device communication link (e.g., via sidelink), and the low complexity UE may leverage the device-to-device link to improve (e.g., simplify, expedite, etc.) random access procedures performed by the low complexity UE. For example, a low complexity UE may request contention free random access (CFRA) resources via the device-to-device link with another UE. Another device (e.g., another UE in device-to-device communication with the low complexity UE) may receive the request from the low complexity UE and forward the request to the network (e.g., to a base station). The network may then configure CFRA resources for the low complexity UE. Upon receiving the CFRA configuration, the low complexity UE may perform a random access procedure (e.g., a CFRA procedure) with the network (e.g., with the base station) accordingly.

公开(公告)号：US12047330B2

公开(公告)日：2024-07-23

申请号：US17309615

申请日：2019-12-27

Applicant: QUALCOMM Incorporated

Inventor： Yiqing Cao ,  Huilin Xu ,  Yuwei Ren ,  Tingfang Ji

IPC: H04L5/00 ,  H04W72/044 ,  H04W72/1268

CPC classification number: H04L5/0094 ,  H04L5/0051 ,  H04L5/0062 ,  H04W72/044 ,  H04W72/1268

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station (BS) may receive a first downlink determining, based at least in part on an uplink transmission schedule for a user equipment (UE), one or more communications that are to be transmitted as a cross link interference reference signal (CLI-RS) during a time window. The BS may transmit, to the UE, an instruction to transmit the one or more communications as the CLI-RS during the time window. Numerous other aspects are provided.

公开(公告)号：US11991751B2

公开(公告)日：2024-05-21

申请号：US17310485

申请日：2020-02-26

Applicant: QUALCOMM Incorporated

Inventor： Yiqing Cao ,  Jing Lei ,  Wanshi Chen

IPC: H04L12/50 ,  H04L5/00 ,  H04W74/0833

CPC classification number: H04W74/0833 ,  H04L5/0044 ,  H04L5/0048

Abstract: A user equipment (UE) may be configured to generate a preamble of a first message associated with a random access channel (RACH) procedure, such as a two-step RACH procedure. The UE may be further configured to determine an identifier (ID) associated with the UE based on at least one of an ID associated with the preamble or a port index associated with a demodulation reference signal (DMRS). The UE may generate a payload of the first message that indicates the ID associated with the UE. The UE may then transmit the first message to a base station to initiate the RACH procedure. Potentially, the UE may receive a second message from the base station responsive to the first message, and the second message may confirm the ID associated with the UE.

公开(公告)号：US11985524B2

公开(公告)日：2024-05-14

申请号：US17434280

申请日：2020-02-04

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Hung Dinh Ly ,  Yiqing Cao ,  Peter Gaal

IPC: H04W24/08 ,  H04W56/00

CPC classification number: H04W24/08 ,  H04W56/0065

Abstract: A configuration for a UE that measures CLI to determine the reception timing of the CLI signal transmitted from a UE in another cell. Aspects of a method, apparatus, and computer-readable medium are presented herein that provide a solution to the problem of measuring CLI signals by improving the manner in which a wireless device determines the reception timing of a transmitted CLI signal. An apparatus receives a first downlink signal from a first base station. The apparatus receiving a second downlink signal from a second base station. The apparatus determines a CLI signal measurement from a second UE received at the first UE based on a propagation delay difference, the propagation delay difference being based on the first downlink signal and the second downlink signal.

公开(公告)号：US11792675B2

公开(公告)日：2023-10-17

申请号：US17284740

申请日：2019-10-15

Applicant: QUALCOMM Incorporated

Inventor： Yiqing Cao ,  Huilin Xu ,  Wanshi Chen ,  Yuwei Ren

IPC: H04W28/02 ,  H04B17/336 ,  H04W76/11 ,  H04L5/00 ,  H04W24/10

CPC classification number: H04W28/0236 ,  H04B17/336 ,  H04L5/0051 ,  H04W24/10 ,  H04W76/11

Abstract: Aspects are provided allowing a first base station to distinguish between cross-link interference and remote interference caused to a second base station and to apply different mitigation mechanisms based on the type of interference. A UE receives from a second base station a reference signal based on a reference signal identifier that indicates a location of the second base station that is experiencing interference from the first base station. The UE sends to the first base station an indication of the reference signal received from the second base station. The first base station receives from the UE the indication of the reference signal from the second base station based on the reference signal identifier. The first base station applies a mitigation mechanism based on whether the reference signal identifier indicates that the second base station is a remote base station or a neighbor base station.

公开(公告)号：US11606789B2

公开(公告)日：2023-03-14

申请号：US16949149

申请日：2020-10-15

Applicant: QUALCOMM Incorporated

Inventor： Peter Gaal ,  Yiqing Cao ,  Wei Yang

IPC: H04W72/04 ,  H04W16/32 ,  H04W72/0453 ,  H04W72/0446

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive information identifying an offset between a start of a frame on a first component carrier and a start of a frame on a second component carrier, wherein the first component carrier is one of a primary cell (PCell) or a secondary cell (SCell), and wherein the second component carrier is the other of the PCell or the SCell; determine that a slot on the first component carrier is aligned with a slot on the second component carrier; identify the slot on the second component carrier in accordance with the offset; and communicate on the first component carrier or the second component carrier based at least in part on the start of the slot on the second component carrier. Numerous other aspects are provided.

公开(公告)号：US11575551B2

公开(公告)日：2023-02-07

申请号：US17040596

申请日：2019-03-25

Applicant: Qualcomm Incorporated

Inventor： Yiqing Cao ,  Wanshi Chen ,  Jing Lei ,  Renqiu Wang

IPC: H04W72/04 ,  H04L27/26 ,  H04L5/00 ,  H04L25/02 ,  H04W72/044

Abstract: Methods, systems, and devices for wireless communications are described. In some systems (e.g., non-orthogonal multiple access (NOMA) systems), a base station may serve a large number of user equipments (UEs) on the uplink. To improve detectability for these uplink transmissions (e.g., if reference signals are not available for the transmissions), the UEs may implement parallel transmissions of preambles with uplink data. A UE may split the uplink data into one or more data layers, and may select one or more preamble layers to transmit superposed with the data layers. These preambles may be sequences known to both the UE and the base station to aid in detectability. The UE may assign different signature sequences to each of these layers based on cross-correlation values (e.g., assigning sequences with higher cross-correlation values to the data layers for improved detectability), and may scramble the layers into a single shared signal for transmission.