公开(公告)号：US20240324018A1

公开(公告)日：2024-09-26

申请号：US18261087

申请日：2021-02-12

Applicant: QUALCOMM Incorporated

Inventor： Liangping MA ,  Xiao Feng WANG ,  Jun MA ,  Peter GAAL ,  Juan MONTOJO ,  Wanshi CHEN ,  Alberto RICO ALVARINO ,  Ayan SENGUPTA ,  Bharat SHRESTHA ,  Huilin XU ,  Yiqing CAO ,  Umesh PHUYAL

IPC: H04W74/0833 ,  H04B7/06

CPC classification number: H04W74/0833 ,  H04B7/0617 ,  H04B7/0626

Abstract: Certain aspects of the present disclosure provide techniques for beam selection for random access. A method that may be performed by a user equipment (UE) includes receiving, from a network entity, via a first beam, system information associated with at least a first plurality of beams that are within a coverage area of the first beam. The method also includes selecting a second beam among at least the first plurality of beams based at least in part on the system information and performing a random access procedure via the selected second beam.

公开(公告)号：US20240276404A1

公开(公告)日：2024-08-15

申请号：US18440963

申请日：2024-02-13

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 ,  H04W74/0833

CPC classification number: H04W56/0005 ,  H04W4/029 ,  H04W74/0833

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.

公开(公告)号：US20240267865A1

公开(公告)日：2024-08-08

申请号：US18567225

申请日：2021-08-06

Applicant: QUALCOMM Incorporated

Inventor： Liangping MA ,  Xiao Feng WANG ,  Changhwan PARK ,  Peter GAAL ,  Alberto RICO ALVARINO ,  Ayan SENGUPTA ,  Bharat SHRESTHA ,  Umesh PHUYAL ,  Huilin XU ,  Jun MA ,  Wanshi CHEN ,  Juan MONTOJO ,  Yiqing CAO

IPC: H04W56/00 ,  H04B7/185

CPC classification number: H04W56/0045 ,  H04B7/18513

Abstract: A user equipment (UE) receives one or more timing advance commands from a non-terrestrial network (NTN). The UE resets, after a GNSS fix, a cumulative timing advance value based on the one or more timing advance commands from the NTN and transmits an uplink transmission with a timing advance based on a self-estimated delay and the cumulative timing advance value. The UE may adjust a self-estimated delay based on at least one GNSS fix. The UE may transmit an uplink transmission with a timing advance based on the adjusted self-estimated delay and a cumulative timing advance value based on the one or more timing advance commands from the NTN.

公开(公告)号：US20240259917A1

公开(公告)日：2024-08-01

申请号：US18565405

申请日：2021-08-12

Applicant: QUALCOMM Incorporated

Inventor： Liangping MA ,  Huilin XU ,  Xiao Feng WANG ,  Ayan SENGUPTA ,  Alberto RICO ALVARINO ,  Bharat SHRESTHA ,  Jun MA ,  Changhwan PARK ,  Peter GAAL ,  Umesh PHUYAL ,  Juan MONTOJO ,  Wanshi CHEN ,  Yiqing CAO

IPC: H04W48/10 ,  H04L5/00

CPC classification number: H04W48/10 ,  H04L5/0051

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a synchronization signal/physical broadcast channel (SS/PBCH) block index, associated with an SS/PBCH block, based at least in part on a set of bits included in a payload of a PBCH of the SS/PBCH block, a demodulation reference signal (DMRS) sequence included in the PBCH, a scrambling sequence associated with the PBCH, or an interleaving associated with the PBCH. Numerous other aspects are described.

公开(公告)号：US20240178912A1

公开(公告)日：2024-05-30

申请号：US18431807

申请日：2024-02-02

Applicant: QUALCOMM Incorporated

Inventor： Bharat SHRESTHA ,  Alberto RICO ALVARINO ,  Xiao Feng WANG ,  Masato KITAZOE ,  Ayan SENGUPTA ,  Amer CATOVIC ,  Umesh PHUYAL ,  Liangping MA ,  Le LIU

IPC: H04B7/185 ,  H04W36/00 ,  H04W36/08

CPC classification number: H04B7/18541 ,  H04W36/0009 ,  H04W36/00835 ,  H04W36/08

Abstract: A user equipment (UE) selects or reselects a target cell of a non-terrestrial network or resumes connectivity with the target cell after a satellite handover for a permanently fixed low Earth orbit (LEO) cell. The target cell is a serving or non-serving cell. The UE determines a cell type of the target cell. The cell type may be a LEO cell type, a geostationary Earth orbit (GEO) cell type, a moving cell type, a fixed cell type, a temporarily fixed LEO cell type, or a permanently fixed LEO cell type. The UE completes selection or reselection of the target cell or completes the connectivity with the target cell, based on the cell type.

公开(公告)号：US20240121830A1

公开(公告)日：2024-04-11

申请号：US18270393

申请日：2021-03-22

Applicant: QUALCOMM Incorporated

Inventor： Liangping MA ,  Xiao Feng WANG ,  Hung Dinh LY ,  Gokul SRIDHARAN ,  Jun MA ,  Ayan SENGUPTA ,  Alberto RICO ALVARINO ,  Bharat SHRESTHA ,  Umesh PHUYAL ,  Peter GAAL ,  Juan MONTOJO ,  Wanshi CHEN ,  Huilin XU ,  Yiqing CAO

IPC: H04W74/0833 ,  H04B17/318 ,  H04W72/1268 ,  H04W74/08

CPC classification number: H04W74/0833 ,  H04B17/328 ,  H04W72/1268 ,  H04W74/0866

Abstract: RACH occasion repetition and PRACH format selection in an NTN are disclosed. The base station may determine, based on at least one beam, a first PRACH configuration for at least one first UE and a second PRACH configuration for at least one second UE. The base station may transmit, to at least one of the at least one first UE or the at least one second UE, an indication of the first PRACH configuration and the second PRACH configuration. The UE, based on whether it is a first UE or a second UE, may select, based on the received indication, the first PRACH configuration or the second PRACH configuration for at least one beam. The UE may initiate, via the at least one beam, a RACH procedure for the selected first PRACH configuration or the selected second PRACH configuration.

公开(公告)号：US20240114320A1

公开(公告)日：2024-04-04

申请号：US18523272

申请日：2023-11-29

Applicant: QUALCOMM Incorporated

Inventor： Le LIU ,  Wanshi CHEN ,  Alberto RICO ALVARINO ,  Kazuki TAKEDA ,  Ayan SENGUPTA

IPC: H04W4/06 ,  H04L1/1867 ,  H04W72/1263 ,  H04W80/02

CPC classification number: H04W4/06 ,  H04L1/1896 ,  H04W72/1263 ,  H04W80/02

Abstract: Methods, systems, and devices for wireless communications are described in which a user equipment (UE) may receive a feedback configuration for providing feedback for downlink communications from a base station. Based on the feedback configuration, the UE may determine whether one or more feedback processes has a multicast-only configuration for multicast data communications, or a multicast-or-unicast configuration for either multicast data communications or unicast data communications. The UE may decode one or more transmissions associated with the one or more feedback processes based on the multicast-only or multicast-or-unicast configuration, and may determine a feedback codebook based on the multicast-only or multicast-or-unicast configuration of the one or more feedback processes. The UE may monitor for retransmissions of one or more multicast data communications based on the feedback process configuration.

公开(公告)号：US20230362965A1

公开(公告)日：2023-11-09

申请号：US18314073

申请日：2023-05-08

Applicant: QUALCOMM Incorporated

Inventor： Umesh PHUYAL ,  Mungal Singh DHANDA ,  Ayan SENGUPTA ,  Alberto RICO ALVARINO ,  Le LIU

IPC: H04W72/53 ,  H04W76/27 ,  H04W76/36 ,  H04W72/21 ,  H04W72/23

CPC classification number: H04W72/53 ,  H04W76/27 ,  H04W76/36 ,  H04W72/21 ,  H04W72/23

Abstract: Methods, systems, and devices for wireless communications are described. that support preconfigured uplink resources (PUR) in wireless communications. A base station may communicate that support for PUR is available, and may allocate PUR resources to a user equipment (UE) based on requests from the UE. The UE may receive an indication that the base station supports PUR, such as via a system information block (SIB), determine to request PUR, and transmit a PUR request message to the base station. A PUR response from the base station may indicate configuration, or reconfiguration of PUR allocation for the UE that may be used for uplink transmissions, or release of the PUR allocation.

公开(公告)号：US20230276349A1

公开(公告)日：2023-08-31

申请号：US18169428

申请日：2023-02-15

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

CPC classification number: H04W48/10 ,  H04B7/18513

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：US20230213661A1

公开(公告)日：2023-07-06

申请号：US18046892

申请日：2022-10-14

Applicant: QUALCOMM Incorporated

Inventor： Bharat SHRESTHA ,  Mungal Singh DHANDA ,  Ayan SENGUPTA ,  Umesh PHUYAL

IPC: G01S19/24 ,  H04W76/20 ,  H04W76/30

CPC classification number: G01S19/24 ,  H04W76/20 ,  H04W76/30 ,  H04W84/06

Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for GNSS validity reporting in NTNs. A UE may transmit, to a network entity, a report of a validity duration for GNSS tracking information. The GNSS tracking information may be associated with an NTN including the UE and the network entity. The report may include an indication of a remaining time period of the validity duration based on a threshold. The UE may switch to an RRC idle mode based on the report of the validity duration. The RRC idle mode may be switched to after an expiration of the remaining time period of the validity duration or based on an RRC release message received from the network entity.