公开(公告)号：US20240380645A1

公开(公告)日：2024-11-14

申请号：US18316937

申请日：2023-05-12

Applicant: QUALCOMM Incorporated

Inventor： Hemant SAGGAR ,  Iyab Issam SAKHNINI ,  Jing SUN ,  Xiaoxia ZHANG ,  Tao LUO ,  Junyi LI ,  Morteza SOLTANI ,  Raviteja PATCHAVA

IPC: H04L27/26 ,  H04L1/00 ,  H04L25/03

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration that indicates, within each symbol of a plurality of symbols, an extra guard interval (GI) before data and a tail GI after the data. The UE may decode first data within a first symbol of the plurality of symbols at a first time location that is based at least in part on the extra GI and the tail GI within the first symbol. The UE may decode second data within a second symbol of the plurality of symbols at a second time location that is based at least in part on the tail GI within the second symbol. Numerous other aspects are described.

公开(公告)号：US20230188404A1

公开(公告)日：2023-06-15

申请号：US17643540

申请日：2021-12-09

Applicant: QUALCOMM Incorporated

Inventor： Raviteja PATCHAVA ,  Jun MA ,  Morteza SOLTANI

IPC: H04L27/26 ,  H04L5/00

CPC classification number: H04L27/2697 ,  H04L5/0007 ,  H04L27/2636

Abstract: Certain aspects of the present disclosure provide techniques for hybrid modulation and demodulation, which may include multiplexing and demultiplexing different waveform types. An example method includes receiving a time-domain waveform from a transmitting entity and converting the time-domain waveform to a frequency domain. The method also includes identifying a first set of time and frequency resources associated with converted first information and a second set of time and frequency resources associated with second information in time and frequency resources of an orthogonal frequency domain multiplexing (OFDM) resource grid in a time-frequency domain. The method further includes decoding the first set of time and frequency resources to generate first information from the converted first information. For certain aspects, the first information may be precoded with an orthogonal time frequency space (OTFS) modulation.

公开(公告)号：US20230110723A1

公开(公告)日：2023-04-13

申请号：US17500853

申请日：2021-10-13

Applicant: QUALCOMM Incorporated

Inventor： Hemant SAGGAR ,  Iyab Issam SAKHNINI ,  Raviteja PATCHAVA ,  Morteza SOLTANI ,  Jun MA ,  Tao LUO

IPC: H04W72/04 ,  H04L27/26

Abstract: A method for wireless communication at a user equipment (UE) includes receiving, from a base station, a slot parameter that configures the UE to receive a number of symbols within a self-contained slot. The method also includes receiving, from the base station, a cyclic prefix (CP) parameter associated with a single symbol of the number of symbols, the CP parameter indicating a source of samples for a CP included at a beginning of the single symbol. The method further includes receiving, from the base station, the number of symbols within the self-contained slot. In some examples, a guard interval (GI) may be included at one or both of an end or a beginning of each symbol of the number of symbols. The CP may be outside a single FFT window of a number of FFT windows, associated with the single symbol of the number of symbols.

公开(公告)号：US20250088326A1

公开(公告)日：2025-03-13

申请号：US18464151

申请日：2023-09-08

Applicant: QUALCOMM Incorporated

Inventor： Morteza SOLTANI ,  Jing SUN ,  Xiaoxia ZHANG ,  Iyab Issam SAKHNINI ,  Tao LUO ,  Peter GAAL

IPC: H04L5/00 ,  H04L1/00 ,  H04W72/232

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a control message indicating to switch from a first slot format to a second slot format. The first slot format may include symbols for reference signal transmissions and symbols for data transmissions. Thus, the first slot format may be a full-TDM slot that supports time division multiplexing (TDM) reference signals and data. The second slot format may be a hybrid TDM/frequency division multiplexing (FDM) slot or a full-FDM slot that includes at least one symbol for frequency division multiplexing (FDM) reference signals and data. Based on a capability of the UE and the control message, the UE may switch to the second slot format and communicate a reference signal in a symbol configured for FDM. That is, the reference signal may be FDMed with data according to the second slot format.

公开(公告)号：US20240422771A1

公开(公告)日：2024-12-19

申请号：US18335947

申请日：2023-06-15

Applicant: QUALCOMM Incorporated

Inventor： Morteza SOLTANI ,  Mahmoud TAHERZADEH BOROUJENI ,  Tao LUO

IPC: H04W72/1263 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communications are described. A wireless communication device may transmit an indication of a probabilistically-shaped (PS) constellation being enabled for transmission of one or more messages. The wireless communication device may communicate a grant with a second wireless communication device, the grant indicating a set of resources including one or more resource blocks for transmission of a message of the one or more messages. The wireless communication device may transmit the message over the set of resources in accordance with the PS constellation based on a quantity of the one or more resource blocks of the set of resources failing to satisfy a threshold quantity of resource blocks. In some examples, the wireless communication device may transmit a second indication of the PS constellation, where transmitting the message in accordance with the PS constellation may be based on transmitting the second indication.

公开(公告)号：US20220239427A1

公开(公告)日：2022-07-28

申请号：US17453814

申请日：2021-11-05

Applicant: QUALCOMM Incorporated

Inventor： Anantha Krishna Karthik NAGARAJAN ,  Jun MA ,  Morteza SOLTANI ,  Xiaoxia ZHANG ,  Iyab Issam SAKHNINI ,  Wooseok NAM ,  Tao LUO ,  Peter GAAL ,  Juan MONTOJO

IPC: H04L5/00

Abstract: Certain aspects of the present disclosure provide techniques for demodulation reference signal (DMRS) sequence selection. One aspect provides a method for wireless communication by a first wireless node. The method generally includes selecting a type of DMRS sequence to be used for communication with a second wireless node based on a signal quality associated with the communication, receiving a message having the type of DMRS sequence, and performing channel estimation based on the DMRS sequence using the message.

公开(公告)号：US20240405867A1

公开(公告)日：2024-12-05

申请号：US18327779

申请日：2023-06-01

Applicant: QUALCOMM Incorporated

Inventor： Yisheng XUE ,  Karoly BECZE ,  Xiaoxia ZHANG ,  Junyi LI ,  Morteza SOLTANI ,  Sam LIU ,  Jing SUN ,  Jason BUSH ,  Timothy VU ,  Sergio ALVAREZ

IPC: H04B10/079 ,  H04B10/11 ,  H04B10/40

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) in an optical wireless communications system may utilize a curved focal plane of a condenser lens to communicate an optical wireless signal. An optical front-end (OFE) of the UE may include one or more optical communication components located at varying distances from the condenser lens on a curved focal plane of the condenser lens. Additionally or alternatively, the UE may adjust a position of one or more optical communication components on the curved focal plane. Additionally or alternatively, the OFE may include an array of condenser lenses and optical communication components each optically coupled with one or more condenser lenses. The UE may perform equal gain combination and/or equal ratio power splitting to communicate an optical wireless signal using the array of condenser lenses and optical communication components.

公开(公告)号：US20240259244A1

公开(公告)日：2024-08-01

申请号：US18103380

申请日：2023-01-30

Applicant: QUALCOMM Incorporated

Inventor： Morteza SOLTANI ,  Jing SUN ,  Xiaoxia ZHANG ,  Raviteja PATCHAVA ,  Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL

IPC: H04L27/26

CPC classification number: H04L27/2613 ,  H04L27/2636

Abstract: A method for wireless communication by a user equipment (UE) includes transmitting, to a network node, a first message indicating a capability of the UE to transmit a multiplexed low peak-to-average power ratio (PAPR) demodulation reference signal (DM-RS) and a high PAPR reference signal (RS) within a single slot. The method also includes multiplexing, associated with the capability, the low PAPR DM-RS with the high PAPR RS within the single slot. The method further includes transmitting, to the network node, the multiplexed low PAPR DM-RS and high PAPR RS within the single slot.

公开(公告)号：US20230051510A1

公开(公告)日：2023-02-16

申请号：US17445124

申请日：2021-08-16

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia ZHANG ,  Jing SUN ,  Jun MA ,  Raviteja PATCHAVA ,  Morteza SOLTANI ,  Tao LUO ,  Iyab Issam SAKHNINI ,  Hemant SAGGAR

IPC: H04L27/26

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) or a base station may generate a discrete Fourier transform (DFT) waveform from separate DFT inputs of data content, a guard interval (GI) sequence, and tail suppression samples. The UE or the base station may generate a first communication with the DFT waveform using an inverse fast Fourier transform (IFFT) operation. The first communication may include, in a time domain, a data signal corresponding to the data content and a GI-based tail signal that corresponds to the GI sequence and that is suppressed with a tail suppression signal based at least in part on the tail suppression samples. The UE or the base station may transmit the first communication. Numerous other aspects are described.

公开(公告)号：US20230023316A1

公开(公告)日：2023-01-26

申请号：US17443399

申请日：2021-07-26

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia ZHANG ,  Jun MA ,  Morteza SOLTANI ,  Jing SUN ,  Raviteja PATCHAVA

IPC: H04L27/26 ,  H04W72/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiving device may receive, from a first wireless communication device on a first communication channel, a first communication that is configured with at least one guard interval (GI) sequence of a first GI type. The receiving device may receive, from the first wireless communication device or a second wireless communication device on the first communication channel or a second communication channel, a second communication that is configured with at least one GI sequence of a second GI type. Numerous other aspects are described.