公开(公告)号：US20230116477A1

公开(公告)日：2023-04-13

申请号：US17500793

申请日：2021-10-13

Applicant: QUALCOMM Incorporated

Inventor： Ayan Sengupta ,  Javier Rodriguez Fernandez ,  Alberto Rico Alvarino

IPC: H04L27/26 ,  H04W4/06 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A device may receive a set of demodulation reference signals (DMRSs) over a multi-path channel on a set of resources in accordance with a reference signal pattern. The reference signal pattern may be associated with a non-uniform frequency spacing that results in a row-sampled Discrete Fourier Transform (DFT) matrix associated with the reference signal pattern having a lower coherence than other row-sampled DFT matrices. Additionally or alternatively, the device may receive a set of tracking reference signals (TRSs) over the multi-path channel. The set of TRSs may be specific to wide-area terrestrial broadcast services, single frequency network (SFN)-based broadcast services, multimedia broadcast multicast services (MBMSs), or the reference signal pattern. The device may perform channel estimation based on receiving one or both of the set of DMRSs or the set of TRSs over the multi-path channel.

公开(公告)号：US11621805B2

公开(公告)日：2023-04-04

申请号：US17248110

申请日：2021-01-08

Applicant: QUALCOMM Incorporated

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

IPC: H04L1/18 ,  H04W72/12 ,  H04L1/20 ,  H04W76/27 ,  H04W72/14 ,  H04W24/08 ,  H04L1/1812

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a base station, a first physical uplink shared channel (PUSCH) using one or more physical layer (PHY) parameters associated with a first block error rate (BLER) target performance. The UE may receive, from the base station prior to expiration of a round trip timer associated with the first PUSCH, downlink control information (DCI) scheduling a second PUSCH and configuring one or more PHY parameters associated with a second BLER target performance. The UE may transmit, to the base station, the second PUSCH using the PHY parameter(s) associated with the second BLER target performance, wherein the second PUSCH includes a retransmission of the first PUSCH or a new transmission based at least in part on a hybrid automatic repeat request process indicated in the DCI. Numerous other aspects are described.

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：US11616528B2

公开(公告)日：2023-03-28

申请号：US16865216

申请日：2020-05-01

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Ayan Sengupta ,  Le Liu ,  Umesh Phuyal

IPC: H04W4/00 ,  H04B1/7143 ,  H04W72/04 ,  H04W76/27 ,  H04W72/14 ,  H04L5/00 ,  H04W24/08 ,  H04W8/24 ,  H04L1/1812 ,  H04L1/1867 ,  H04B1/713 ,  H04W52/02

Abstract: Methods, systems, and devices for wireless communications are described that support techniques for wireless communications using preconfigured uplink resources. Generally, the described techniques provide for enhancement of communication features including frequency hopping, an uplink control channel, coverage enhancement, timing advance, uplink power control, reconfiguration, a downlink control channel, a downlink data channel, retransmissions, or subcarrier spacing for a UE in idle mode. The UE may receive an uplink resource configuration for uplink communications in idle mode, the uplink resource configuration comprising an indicator associated with allocated resources for the uplink communications in idle mode and a set of parameters. The UE may transmit, while in idle mode, a first uplink transmission associated with a transport block on the allocated resources and according to one or more of the parameters, and monitor for a response to the first uplink transmission.

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：US11582715B2

公开(公告)日：2023-02-14

申请号：US17172485

申请日：2021-02-10

Applicant: QUALCOMM INCORPORATED

Inventor： Le Liu ,  Peter Gaal ,  Ayan Sengupta ,  Alberto Rico Alvarino ,  Kazuki Takeda ,  Xiaoxia Zhang ,  Tao Luo ,  Wanshi Chen ,  Prasad Reddy Kadiri ,  Mostafa Khoshnevisan ,  Umesh Phuyal ,  Xipeng Zhu

IPC: H04W72/00 ,  H04L5/00 ,  H04W72/14 ,  H04W72/12

Abstract: Wireless communications systems and methods related to acknowledgement/negative-acknowledgement (ACK/NACK) feedback operations for multicast communications are provided. A first user equipment (UE) receives, from a base station (BS), a multicast feedback configuration indicating a first resource configuration for a negative-acknowledgement (NACK) feedback mode; and a second resource configuration for an acknowledgement/negative-acknowledgement (ACK/NACK) feedback mode. The first UE receives, from the BS, a first multicast communication. The first UE transmits, to the BS, a NACK feedback for the first multicast communication based on the first resource configuration. The first UE receives, from the BS, a second multicast communication. The first UE transmits, to the BS, an ACK feedback or a NACK feedback for the second multicast communication based on the second resource configuration.

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：US20220361254A1

公开(公告)日：2022-11-10

申请号：US17651206

申请日：2022-02-15

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/04 ,  H04L5/00

Abstract: Aspects are provided which allow coverage enhancement and support in NTNs for repetition, frequency hopping, and antenna switching during msgA transmissions based on a preamble-to-PO mapping. In one aspect, the base station provides and the UE obtains a RACH configuration associating a preamble with at least one PO for two-step random access, where the PO spans a time interval greater than one slot. In another aspect, the base station provides and the UE obtains a RACH configuration associating a preamble with a plurality of POs for two-step random access. In a further aspect, the base station provides the UE a plurality of configurations each indicating a PO for two-step random access. In an additional aspect, the base station provides the UE a configuration indicating a guard band for a PO for two-step random access, where the guard band is indicated in units of subcarriers spanning less than one PRB.

公开(公告)号：US11496966B2

公开(公告)日：2022-11-08

申请号：US17171696

申请日：2021-02-09

Applicant: QUALCOMM incorporated

Inventor： Kazuki Takeda ,  Le Liu ,  Peter Gaal ,  Ayan Sengupta ,  Alberto Rico Alvarino ,  Xiaoxia Zhang ,  Tao Luo ,  Wanshi Chen ,  Prasad Reddy Kadiri ,  Mostafa Khoshnevisan ,  Umesh Phuyal ,  Xipeng Zhu

IPC: H04W52/14 ,  H04W4/06 ,  H04W72/00 ,  H04W52/24 ,  H04W72/04 ,  H04L12/18

Abstract: Methods, systems, and devices for wireless communications are described. A base station may communicate with a user equipment (UE) or multiple UEs using multicast transmissions, and each of the multiple UEs may use shared resources to transmit feedback. A UE may receive a power control configuration associated with multicast communications and indicating one or more control parameters or weighting factors for uplink feedback. The UE may monitor a set of downlink resources for the multicast message from the base station, and may determine a decoding failure for the multicast message. The UE may determine whether to transmit uplink feedback to the base station based on the received power control parameters, such as adjusting UE transmit power using a weighting factor or other power control parameters. The UE may determine whether to transmit the uplink feedback message indicating the decoding failure based on the power control configuration.

公开(公告)号：US20220353203A1

公开(公告)日：2022-11-03

申请号：US17246298

申请日：2021-04-30

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Peter Gaal ,  Le Liu ,  Kazuki Takeda ,  Ayan Sengupta

IPC: H04L12/861

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a first transmission including encoded bits of a data packet and a second transmission including some or all of the encoded bits of the data packet. The first transmission associated with a first limited buffer rate matching (LBRM) configuration and the second transmission may be associated with a second LBRM configuration. The UE may process the first transmission and the second transmission based on the first LBRM associated with the first transmission being different than the second LBRM associated with the second transmission.