公开(公告)号：US20230111316A1

公开(公告)日：2023-04-13

申请号：US17657906

申请日：2022-04-04

Applicant: QUALCOMM Incorporated

Inventor： Liangping Ma ,  Xiao Feng Wang ,  Ayan Sengupta ,  Bharat Shrestha ,  Umesh Phuyal ,  Peter Gaal ,  Alberto Rico Alvarino ,  Changhwan Park

IPC: H04B7/185

Abstract: Certain aspects of the present disclosure provide techniques for enhancing ephemeris for non-terrestrial networks. For example, UEs of different orbit propagation capabilities (e.g., computing orbit propagation models of different accuracy levels) may receive additional ephemeris parameters. In one aspect, a network entity may determine at least one additional set of ephemeris parameters that includes different ephemeris parameters than one or more basic sets of ephemeris parameters associated with a satellite that provides a coverage for the network entity. The network entity may transmit broadcast signaling indicating the at least one additional set of ephemeris parameters. The UE may receive and use the at least one additional set of ephemeris parameters in an orbit propagation model to compute a state of motion of the satellite.

公开(公告)号：US11626954B2

公开(公告)日：2023-04-11

申请号：US17447119

申请日：2021-09-08

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/044 ,  H04W72/12 ,  H04W24/10

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may determine a polarization associated with a channel state information reference signal (CSI-RS) resource set configuration. The base station may transmit, to a user equipment, a polarization indication that indicates the polarization associated with the CSI-RS resource set configuration. Numerous other aspects are provided.

公开(公告)号：US11589292B1

公开(公告)日：2023-02-21

申请号：US17661996

申请日：2022-05-04

Applicant: QUALCOMM Incorporated

Inventor： Xiao Feng Wang ,  Liangping Ma ,  Bharat Shrestha ,  Umesh Phuyal ,  Alberto Rico Alvarino ,  Ayan Sengupta ,  Peter Gaal ,  Wanshi Chen ,  Juan Montojo

IPC: H04W48/10 ,  H04B7/185

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from an entity of a non-terrestrial network (NTN), a system information block (SIB) that indicates information relating to one or more NTN SIBs that are to include at least one of ephemeris information or feeder link timing advance information. The UE may receive, from the entity of the NTN, the one or more NTN SIBs based at least in part on the information. Numerous other aspects are described.

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.

公开(公告)号：US20220132547A1

公开(公告)日：2022-04-28

申请号：US17451745

申请日：2021-10-21

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/12 ,  H04L1/16 ,  H04L5/00 ,  H04L1/18

Abstract: Certain aspects of the present disclosure are directed to techniques for hybrid automatic repeat request (HARQ) codebook design. For example, a user equipment (UE) configured for feedback processing may comprise a memory and a processor configured to receive, from a base station (BS), a first indication of a first feedback process type for providing feedback to the BS for a plurality of feedback processes of the UE. The memory and the processor may also be configured to receive one or more first downlink transmissions from the BS associated with at least one feedback process of the plurality of feedback processes. The memory and the processor may also be configured to transmit feedback or withhold transmission of feedback to the BS regarding decoding of the one or more first downlink transmissions according to the first feedback process type.

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.

公开(公告)号：US20220007313A1

公开(公告)日：2022-01-06

申请号：US17348526

申请日：2021-06-15

Applicant: QUALCOMM Incorporated

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

IPC: H04W56/00 ,  H04W72/00 ,  H04W72/04 ,  H04W72/12 ,  H04J13/00

Abstract: Methods, systems, and devices for wireless communications are described. A base station may determine a terrestrial characteristic of a cell associated with the base station. A UE may perform a synchronization procedure with the cell and may receive, as part of the synchronization procedure, broadcast signaling associated with the cell. The broadcast signaling may identify the terrestrial characteristic of the cell. The base station may initiate communications with the UE based on the broadcast signaling including the indication of the terrestrial characteristic of the cell.

公开(公告)号：US20210368407A1

公开(公告)日：2021-11-25

申请号：US17322797

申请日：2021-05-17

Applicant: QUALCOMM Incorporated

Inventor： Bharat Shrestha ,  Prasad Reddy Kadiri ,  Umesh Phuyal ,  Alberto Rico Alvarino

IPC: H04W36/00

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques may provide for efficiently triggering a handover at a user equipment (UE) from a source cell to a target cell. The UE may receive, at a first time period, a first control message including a configuration of a target cell to use at a second time period for performing a handover procedure from a source cell to a target cell. The UE may then receive, at the second time period, a second control message triggering the UE to perform the handover procedure from the source cell to the target cell. The UE may use the configuration of the target cell received in the first control message to perform a handover procedure from the source cell to the target cell at the second time period in response to receiving the second control message.

公开(公告)号：US20210321357A1

公开(公告)日：2021-10-14

申请号：US17222650

申请日：2021-04-05

Applicant: QUALCOMM Incorporated

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

IPC: H04W60/04 ,  H04W68/00 ,  H04W24/08 ,  H04W76/11

Abstract: Methods, systems, and devices for wireless communications are described. In some non-terrestrial networks, the movement of satellites may result in the movement of cell coverage. A user equipment (UE) may experience changing cell coverage due to the movement of cell coverage, even if the UE is stationary. A UE may be configured to determine a cell is serving two or more earth-fixed tracking areas, determine whether to monitor paging resources of a first earth-fixed tracking area or a second earth-fixed tracking area, and monitor the selected paging resources. In some aspects, the UE may determine that a cell serves two or more earth-fixed tracking areas based on a received control message including multiple tracking area indicators. In some aspects, the UE may determine which paging resources to monitor based on a geographic position of the UE.

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.