公开(公告)号：US11617215B2

公开(公告)日：2023-03-28

申请号：US17443154

申请日：2021-07-21

Applicant: QUALCOMM Incorporated

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

IPC: H04W56/00 ,  H04W74/08 ,  H04W74/00 ,  H04W36/00 ,  H04W24/08 ,  H04W84/06

Abstract: Various aspects described herein relate to dynamically controlling a time when random access initiated in a target cell of a non-terrestrial network. For example, when a user equipment (UE) detects an event that triggers a random access procedure in the target cell, the UE may monitor a control channel from the target cell for a control signal during a target cell monitoring window prior to initiating random access in the target cell. For example, the control signal may include a dynamic indication to identify UEs allowed to initiate random access, whereby a UE is not permitted to autonomously start contention-based random access in the target cell during the target cell monitoring window unless the UE has received the control signal. In this way, the target cell may regulate a rate at which UEs initiate the RACH procedure in order to manage congestion in the target cell.

公开(公告)号：US11601906B2

公开(公告)日：2023-03-07

申请号：US17348491

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 ,  H04W76/30

Abstract: Methods, systems, and devices for wireless communications are described. A narrowband internet of things (NB-IoT) user equipment (UE) associated with a non-terrestrial wireless network may identify a first synchronization procedure that is specific to the non-terrestrial network and different from synchronization procedures specific to terrestrial networks. In some cases, the UE may identify a different channel raster or may receive an indication of a true frequency of operation of a narrowband cell in the non-terrestrial network. The UE may identify the narrowband cell associated with the non-terrestrial network and may synchronize with the network using the identified synchronization procedure.

公开(公告)号：US11582707B2

公开(公告)日：2023-02-14

申请号：US17168702

申请日：2021-02-05

Applicant: QUALCOMM Incorporated

Inventor： Liangping Ma ,  Xiao Feng Wang ,  Huilin Xu ,  Alberto Rico Alvarino

IPC: H04W56/00 ,  H04L5/00 ,  H04W72/04 ,  H04W72/0453 ,  H04W72/044

Abstract: Certain aspects of the present disclosure provide techniques for rate matching of synchronization signal block (SSB) transmissions in non-terrestrial networks (NTNs). A method that may be performed by a user equipment (UE) includes receiving configuration information indicating a beam-specific rate matching pattern for at least one beam of a plurality of beams configured for the UE, wherein a SSB transmission corresponding to each of the plurality of beams is configured using the same set of frequencies, receiving a data channel using the at least one beam, and processing the data channel based on the rate matching pattern.

公开(公告)号：US11539426B2

公开(公告)日：2022-12-27

申请号：US17149710

申请日：2021-01-14

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/185 ,  H04L1/18 ,  H04L5/00 ,  H04W24/08 ,  H04W28/02 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communication are described. A communication device, such as a user equipment (UE) may transmit, to a base station of a non-terrestrial network, a random access request message associated with a random access procedure using a transport block size (TBS) and a power control specified for the random access request message (e.g., a payload of the random access request message) for the random access procedure. The random access request message including a random access preamble and a random access payload carrying a buffer status report (BSR) or uplink data, or both. The UE may then monitor a response window based at least in part on transmitting the random access request message. The UE may receive, from the base station of the non-terrestrial network, a response message of the random access procedure during the response window.

公开(公告)号：US20220322131A1

公开(公告)日：2022-10-06

申请号：US17219678

申请日：2021-03-31

Applicant: QUALCOMM Incorporated

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

IPC: H04W28/02 ,  H04W72/12 ,  H04W28/06 ,  H04W72/14 ,  H04W84/06

Abstract: Methods, systems, and devices for wireless device are described. A wireless device may receive a configuration for a data radio bearer associated with voice traffic in a wireless communications network. In some examples, the configuration may indicate one or more parameters associated with the voice traffic. Additionally, or alternatively, the wireless device may receive a configuration for a data radio bearer and a configured grant associated with voice traffic. The wireless device may identify a mapping between a configured grant identifier and the data radio bearer based on the configuration In some examples, the wireless device may generate a transport block including the voice traffic based on the one or more parameters associated with the voice traffic or the mapping between the configured grant identifier and the data radio bearer. The wireless device may then transmit the generated transport block including the voice traffic.

公开(公告)号：US11425670B2

公开(公告)日：2022-08-23

申请号：US17248062

申请日：2021-01-07

Applicant: QUALCOMM Incorporated

Inventor： Liangping Ma ,  Huilin Xu ,  Xiao Feng Wang

IPC: H04W56/00 ,  H04W68/02 ,  H04W76/28 ,  H04W72/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a non-terrestrial network (NTN) entity, a configuration message that indicates first paging monitoring occasions (MOs) for first consecutive synchronization signal blocks (SSBs) to be transmitted in a first set of beams and second paging MOs for second consecutive SSBs to be transmitted in a second set of beams. The UE may monitor for the first consecutive SSBs during the first paging MOs and for the second consecutive SSBs during the second paging MOs such that the first paging MOs overlap in time with the second paging MOs. Numerous other aspects are provided.

公开(公告)号：US20220217712A1

公开(公告)日：2022-07-07

申请号：US17142001

申请日：2021-01-05

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Liangping Ma ,  Jing Lei ,  Xiao Feng Wang

IPC: H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. Generally, a user equipment (UE) may communicate with a network device in an idle or disconnected state using preconfigured uplink resources (PURs). The UE may transmit uplink data, and may begin to monitor for a PUR response message corresponding to the uplink data after a configurable time offset. The Base station may indicate the configurable time offset in an RRC release message, another message, or the UE may select the configurable time offset from a set of configurable time offsets based on one or more system parameter values. Additionally, the UE may not monitor for PUR response messages after every PUR occasion during which it transmits uplink data.

公开(公告)号：US20220015148A1

公开(公告)日：2022-01-13

申请号：US17364230

申请日：2021-06-30

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04B7/185 ,  H04W72/04 ,  H04W74/00

Abstract: Methods, systems, and devices for wireless communications are described in which random access preambles may be designed to provide for relatively low inter-carrier interference (ICI) of adjacent available frequency resources in a non-terrestrial network (NTN). Random access preambles for NTN random access requests may be selected from a first set of random access preambles that are different from a second set of random access preambles for terrestrial random access requests. The first set of random access preambles may be a subset of the second set of random access preambles. The first set of random access preambles may be provided for contention-based random access (CBRA) and contention-free random access (CFRA) preambles may be configured by a base station from random access preambles that correspond to or are different from the second set of random access preambles.

公开(公告)号：US20210337598A1

公开(公告)日：2021-10-28

申请号：US17240708

申请日：2021-04-26

Applicant: QUALCOMM Incorporated

Inventor： Jun Ma ,  Qiang Wu ,  Dan Zhang ,  Alberto Rico Alvarino ,  Xiao Feng Wang ,  Liangping Ma ,  Peter Gaal ,  Iyab Issam Sakhnini

IPC: H04W74/08 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may account for propagation delay when initiating a random access (RACH) procedure. For example, the UE may determine transmission timing for a RACH preamble based on an estimated propagation delay, such that the RACH preamble is received at a base station approximately at the beginning of a slot. To support reliable communication of the RACH preamble, the UE may implement a timing offset. In some examples, the base station may configure the UE with the timing offset using system information. Alternatively, the UE may be pre-configured with the timing offset. By determining the transmission timing for the RACH preamble further based on the timing offset, the UE may ensure that the RACH preamble is received at the base station after a slot boundary (e.g., avoiding causing interference to communications in a previous slot).

公开(公告)号：US12302264B2

公开(公告)日：2025-05-13

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

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.