公开(公告)号：US11831573B2

公开(公告)日：2023-11-28

申请号：US17387562

申请日：2021-07-28

Applicant: QUALCOMM Incorporated

Inventor： Hemant Saggar ,  Iyab Issam Sakhnini ,  Jun Ma ,  Tao Luo

IPC: H04L5/00 ,  H04L27/26

CPC classification number: H04L5/0048 ,  H04L27/2605

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of a subcarrier spacing (SCS) for communications in a transmission time interval (TTI), such as a half-subframe, including multiple symbols, corresponding cyclic prefixes, and a padding duration which is at least as long as a symbol duration. The UE may receive a configuration for the padding duration, indicating that at least a portion of the padding duration is reallocated for a reference signal that indicates waveform parameters for one or more symbols of the TTI after the padding duration. The UE may receive the reference signal indicating the waveform parameters during the portion of the padding duration and communicate during the one or more symbols of the TTI according to the waveform parameters.

公开(公告)号：US11784862B1

公开(公告)日：2023-10-10

申请号：US17580976

申请日：2022-01-21

Applicant: QUALCOMM Incorporated

Inventor： Iyab Issam Sakhnini ,  Tao Luo ,  Xiaoxia Zhang ,  Jing Sun ,  Junyi Li ,  Jun Ma

IPC: H04L27/26

CPC classification number: H04L27/2607 ,  H04L27/2613

Abstract: Certain aspects of the present disclosure provide techniques for wireless communications by a transmitter, comprising generating a waveform to be transmitted in one or more symbols, with a guard interval (GI) between adjacent symbols according to a GI configuration selected from a plurality of GI configurations, and transmitting the waveform with the GI between symbols.

公开(公告)号：US20230276309A1

公开(公告)日：2023-08-31

申请号：US18314501

申请日：2023-05-09

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Qiang Wu ,  Jun Ma ,  Xiao Feng Wang ,  Iyab Issam Sakhnini ,  Dan Zhang ,  Liangping Ma

IPC: H04W36/00 ,  H04W60/04 ,  H04B7/185

CPC classification number: H04W36/0016 ,  H04W60/04 ,  H04B7/18508 ,  H04W36/0072 ,  H04W36/0058 ,  H04B7/18541

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for wireless communication via a non-terrestrial network (NTN). In one aspect, a method for wireless communication includes initiating, by a user equipment (UE), a registration process with a network entity of an NTN to access the NTN. The method also includes transmitting, by the UE to the network entity, UE capability information of the UE. The method further includes receiving, by the UE from the network entity, a handover command, the handover command comprising a handover time indicator associated with a target handover time for the UE to perform a handover operation from a first beam to a second beam. Other aspects and features are also claimed and described.

公开(公告)号：US20230254793A1

公开(公告)日：2023-08-10

申请号：US17667254

申请日：2022-02-08

Applicant: QUALCOMM Incorporated

Inventor： Raviteja Patchava ,  Jun Ma ,  Jing Sun ,  Sony Akkarakaran ,  Morteza Soltani ,  Xiaoxia Zhang ,  Zhifei Fan ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail

IPC: H04W56/00 ,  H04L5/00 ,  H04L1/00 ,  H04L27/26

CPC classification number: H04W56/0045 ,  H04L5/0023 ,  H04L1/0071 ,  H04L27/26526

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may generate a orthogonal time frequency space (OTFS) waveform for transmission to a second wireless device. Generation of an OTFS waveform may include mapping information samples to a delay-Doppler resource grid having a set of delay values and a set of Doppler values. A channel estimation block may occupy one or more rows of the delay-Doppler grid. When mapping information samples to the delay-Doppler grid, the transmitting device may first map information samples in the delay dimension (e.g., first map all of the symbols in one column of the delay-Doppler grid before mapping information samples into a second column). Such a mapping scheme may reduce the distance from any given information sample to the channel estimation block.

公开(公告)号：US11689398B2

公开(公告)日：2023-06-27

申请号：US17484529

申请日：2021-09-24

Applicant: QUALCOMM Incorporated

Inventor： Iyab Issam Sakhnini ,  Tao Luo ,  Jun Ma ,  Jing Sun ,  Xiaoxia Zhang ,  Hemant Saggar ,  Morteza Soltani

IPC: H04L27/01 ,  H04L27/00 ,  H04W56/00

CPC classification number: H04L27/001 ,  H04W56/0015

Abstract: Methods, systems, and devices for scrambling initialization indication for higher bands are described. For example, a user equipment (UE) may receive a synchronization signal block (SSB) from a base station, the SSB including a primary synchronization signal (PSS), a data payload, and a demodulation reference signal (DMRS). The UE may identify a first part of a cell identifier (ID) of the base station, a second part of the cell ID, or both, indicated in a sequence of the DMRS, indicated in the data payload, or a combination thereof. The UE may monitor for a message from the base station based on identifying the cell ID.

公开(公告)号：US20230198692A1

公开(公告)日：2023-06-22

申请号：US17553254

申请日：2021-12-16

Applicant: QUALCOMM Incorporated

Inventor： Raviteja Patchava ,  Jun Ma ,  Morteza Soltani ,  Xiaoxia Zhang

IPC: H04L5/00 ,  H04W72/04 ,  H04L27/26 ,  H04L25/02

CPC classification number: H04L5/0023 ,  H04L5/0048 ,  H04W72/044 ,  H04L27/2605 ,  H04L25/0212

Abstract: Methods, systems, and devices for wireless communications are described. For example, a wireless device may support physical broadcast channel (PBCH) precoding in high-doppler scenarios. In some cases, a base station may generate a synchronization signal block (SSB) including synchronization signals and PBCH signaling. The base station may transmit, to a UE, the PBCH signaling in accordance with an orthogonal time frequency space (OTFS) precoding and the synchronization signals in accordance with a non-OTFS precoding. The UE may monitor for the SSB and receive the PBCH signaling in accordance with the OTFS precoding and the synchronization signals in accordance with a non-OTFS precoding. The UE may establish or modify a connection with the base station according to the PBCH signaling.

公开(公告)号：US11653350B2

公开(公告)日：2023-05-16

申请号：US16863650

申请日：2020-04-30

Applicant: QUALCOMM Incorporated

Inventor： Xiao Feng Wang ,  Iyab Issam Sakhnini ,  Peter Gaal ,  Jun Ma ,  Huilin Xu

IPC: H04W72/12 ,  H04W72/1268 ,  H04W74/08 ,  H04W72/0446 ,  H04W72/044

CPC classification number: H04W72/1268 ,  H04W72/046 ,  H04W72/0446 ,  H04W74/0833

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station (BS) may determine at least one of a variable random access response (RAR) window start time, a variable maximum quantity of slots for an index of a first slot of a physical random access channel occasion, or scheduling information related to one or more variable delays for an uplink transmission. The BS may transmit, to a user equipment, at least one of information that identifies the RAR window start time, information that identifies the variable maximum quantity of slots, or the scheduling information. Numerous other aspects are provided.

公开(公告)号：US11653245B2

公开(公告)日：2023-05-16

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: H04L1/18 ,  H04L1/20 ,  H04L41/0681 ,  H04L41/0686 ,  H04L43/06 ,  H04L43/0805 ,  H04W8/24 ,  H04W24/10 ,  H04W28/04 ,  H04W56/00 ,  H04W76/25 ,  H04W84/02 ,  H04W88/02 ,  H04W88/08 ,  H04W92/02 ,  H04W92/10

CPC classification number: H04W24/10 ,  H04L1/18 ,  H04L1/203 ,  H04L41/0681 ,  H04L41/0686 ,  H04L43/06 ,  H04L43/0805 ,  H04W8/245 ,  H04W28/04 ,  H04W56/0015 ,  H04W76/25 ,  H04W84/02 ,  H04W88/02 ,  H04W88/08 ,  H04W92/02 ,  H04W92/10

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：US20230135780A1

公开(公告)日：2023-05-04

申请号：US17518022

申请日：2021-11-03

Applicant: QUALCOMM Incorporated

Inventor： Iyab Sakhnini ,  Tao Luo ,  Jing Sun ,  Morteza Soltani ,  Xiaoxia Zhang ,  Jun Ma

IPC: H04L27/26 ,  H04W8/24

Abstract: Methods, systems, and devices for wireless communications are described for indication of one or more symbol structures for one or multiple subsets of a set of symbols. The one or more symbol structures may include one or more guard interval (GI)-based symbol formats that are to be applied to one or more of the subsets of symbols. Different symbol formats may be indicated for different subsets of symbols, and a first subset of symbols may use a GI-based symbol format and a second subset of symbols may use a CP-based or GI-based symbol format. A base station may transmit control signaling to a user equipment to indicate one or more symbol structures for the one or more subsets of symbols, and the UE and the base station may communicate data in one or more slots in accordance with the indicated symbol structures based on the control signaling.

公开(公告)号：US20230123276A1

公开(公告)日：2023-04-20

申请号：US17503900

申请日：2021-10-18

Applicant: QUALCOMM Incorporated

Inventor： Iyab Issam Sakhnini ,  Tao Luo ,  Jing Sun ,  Xiaoxia Zhang ,  Jun Ma ,  Hemant Saggar ,  Morteza Soltani

IPC: H04L27/26 ,  H04W72/04 ,  H04L25/02

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device such as a user equipment (UE) may receive control signaling from a scheduling device such as a base station which indicates a configuration for decoding control channel information at the UE using a single discrete transform process. In such cases, the configuration may be for decoding control channel information such as downlink control information (DCI) that is time multiplexed with data channel information in one or more symbols of a single carrier waveform. Using the configuration, the UE may decode the control channel information and the data channel information using the discrete transform process.