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    DEDICATED UNICAST TRANSMISSION OF SATELLITE LOCATION INFORMATION
    63.
    发明申请
    DEDICATED UNICAST TRANSMISSION OF SATELLITE LOCATION INFORMATION 有权

    公开(公告)号：US20220322263A1

    公开(公告)日：2022-10-06

    申请号：US17220893

    申请日：2021-04-01

    Applicant: QUALCOMM Incorporated

    Inventor： Ayan Sengupta ,  Le Liu ,  Alberto Rico Alvarino ,  Xiao Feng Wang ,  Mungal Singh Dhanda ,  Jun Ma ,  Peter Gaal ,  Bharat Shrestha ,  Liangping Ma ,  Umesh Phuyal

    IPC: H04W56/00 ,  H04B7/185 ,  H04W72/04

    Abstract: Methods, systems, and devices for wireless communications are described in which UEs may communicate with satellites or base stations, or both in a non-terrestrial network. Due to large distances between transmitting devices and receiving devices in a non-terrestrial network, the UE may account for propagation delay and frequency shift of communications with a satellite based on location information of the satellite. The UE may receive first satellite location information from a base station or a satellite, via a broadcast message. The UE may receive second satellite location information from the wireless network node via a unicast message, where both the first satellite location information and the second satellite location information relate to a same satellite. The UE may transmit an uplink communication via the satellite based on at least one of the first satellite location information or the second satellite location information.

    TECHNIQUES FOR DETERMINING BEAM FAILURE OR RADIO LINK FAILURE
    64.
    发明申请
    TECHNIQUES FOR DETERMINING BEAM FAILURE OR RADIO LINK FAILURE 有权

    公开(公告)号：US20220038933A1

    公开(公告)日：2022-02-03

    申请号：US17346960

    申请日：2021-06-14

    Applicant: QUALCOMM Incorporated

    Inventor： Liangping Ma ,  Xiao Feng Wang ,  Ayan Sengupta ,  Bharat Shrestha ,  Alberto Rico Alvarino ,  Umesh Phuyal ,  Jun Ma

    IPC: H04W24/10 ,  H04L12/26 ,  H04L1/18 ,  H04L12/24

    Abstract: Methods, systems, and devices for wireless communications are described. In some networks, a user equipment (UE) may perform radio link monitoring according to one or more radio link monitoring configurations. The UE may select a radio link monitoring configuration from a first radio link monitoring configuration associated with radio link monitoring over a duration that a hybrid automatic repeat request (HARQ) process is enabled and a second radio link monitoring configuration associated with radio link monitoring over a duration that the HARQ process is disabled. The UE may monitor reference signals using the selected radio link monitoring configuration, and may determine a radio link failure, a beam failure, or both has occurred based on monitoring the one or more reference signals using the selected radio link monitoring configuration. The UE may subsequently transmit a measurement report based on determining the radio link failure, the beam failure, or both.

    TIMING IMPROVEMENTS FOR WIRELESS COMMUNICATIONS SYSTEMS
    66.
    发明申请
    TIMING IMPROVEMENTS FOR WIRELESS COMMUNICATIONS SYSTEMS 有权

    公开(公告)号：US20210314889A1

    公开(公告)日：2021-10-07

    申请号：US17214538

    申请日：2021-03-26

    Applicant: QUALCOMM Incorporated

    Inventor： Alberto Rico Alvarino ,  Xiao Feng Wang ,  Liangping Ma ,  Ayan Sengupta ,  Jun Ma ,  Huilin Xu ,  Peter Gaal ,  Bharat Shrestha

    IPC: H04W56/00 ,  H04W4/029 ,  H04W74/08

    Abstract: Non-terrestrial networks (NTNs) may establish uplink (UL) and downlink (DL) radio frame timing structures to efficiently account for propagation delay and propagation delay variation associated with communications in the NTN. NTNs may manage (synchronize) radio frame timing structures of base stations (e.g., satellites) and user equipment (UEs) in the NTN. Further, UEs may determine timing advance (TA) values to be applied to UL transmissions based on their respective scheduling offset (e.g., offset in UL and DL radio frame timing structures), as well as based on propagation delay or round trip time (RTT). As such, served UEs may determine UL timing such that UL transmissions from the UEs to a satellite arrives at the satellite in a time synchronized manner. In other cases, a satellite may determine UL timing, based on reception timing, such that various UEs in the NTN may implement uniform UL and DL radio frame timing structures.

    TIMING ADJUSTMENT IN NON-TERRESTRIAL WIRELESS COMMUNICATIONS
    67.
    发明申请
    TIMING ADJUSTMENT IN NON-TERRESTRIAL WIRELESS COMMUNICATIONS 有权

    公开(公告)号：US20210281520A1

    公开(公告)日：2021-09-09

    申请号：US17188943

    申请日：2021-03-01

    Applicant: QUALCOMM Incorporated

    Inventor： Bharat Shrestha ,  Xiao Feng Wang ,  Umesh Phuyal ,  Alberto Rico Alvarino ,  Liangping Ma

    IPC: H04L12/841 ,  H04B7/185

    Abstract: Methods, systems, and devices for wireless communications are described in which UEs may communicate with satellites and base stations or gateways in a non-terrestrial network (NTN). Due to the large distances between transmitting devices and receiving devices in a NTN, timing adjustments to account for propagation delay communications links via a satellite may include a propagation delay between a UE and a satellite, a propagation delay between a base station and a satellite, as well as a variation in the propagation delays due to movement of the satellite. In accordance with various techniques discussed herein, a UE may account for variation in propagation delay, in addition to determined propagation delay, when determining an uplink timing for uplink communications via a satellite.

    REAL-TIME TRANSPORT (RTP) HEADER EXTENSION BINDING AND RTP HEADER EXTENSION FOR IN-BAND DELAY MEASUREMENT ON EITHER END DEVICE
    69.
    发明申请
    REAL-TIME TRANSPORT (RTP) HEADER EXTENSION BINDING AND RTP HEADER EXTENSION FOR IN-BAND DELAY MEASUREMENT ON EITHER END DEVICE 有权

    公开(公告)号：US20250119372A1

    公开(公告)日：2025-04-10

    申请号：US18904548

    申请日：2024-10-02

    Applicant: QUALCOMM Incorporated

    Inventor： Liangping Ma ,  Imed Bouazizi ,  Thomas Stockhammer ,  Nikolai Konrad Leung

    IPC: H04L43/0852 ,  H04L65/65 ,  H04L65/70

    Abstract: An example method includes sending or receiving a session description protocol (SDP) message that includes binding information that associates a first RTP header extension and a second RTP header extension for an RTP session, wherein the binding information is indicative of a first timestamp in the first RTP header extension, and the first timestamp in the second RTP header extension, both being indicative of a time at which a first RTP packet including the first RTP header extension is transmitted. The method includes transmitting, by a first device, the first RTP packet and receiving, by the first device, a second RTP packet, the second RTP packet including the second RTP header extension including the first timestamp, a second timestamp, and a third timestamp. The method includes determining, based on at least one of the first timestamp, the second timestamp, or the third timestamp, a delay.

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