公开(公告)号：US11843495B2

公开(公告)日：2023-12-12

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

CPC classification number: H04L27/2636 ,  H04L27/261 ,  H04L27/2607

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：US11812431B2

公开(公告)日：2023-11-07

申请号：US17373399

申请日：2021-07-12

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04W72/1273 ,  H04L1/1812 ,  H04L1/1867 ,  H04W72/0446 ,  H04W72/21 ,  H04W84/06

CPC classification number: H04W72/1273 ,  H04L1/1819 ,  H04L1/1896 ,  H04W72/0446 ,  H04W72/21 ,  H04W84/06

Abstract: The apparatus wireless communication may include a UE. The UE may receive a DL communication triggering a UL communication starting in a first UL slot/subframe from an NTN BS over at least one DL slot/subframe ending in a first DL slot/subframe. The UE may monitor for DL communications from the NTN BS in at least a subset of DL slots/subframes between the first DL slot/subframe and a second DL slot/subframe that is time-aligned with the first UL slot/subframe. The DL communication may trigger a second DL communication starting at a third DL slot/subframe and ending at a fourth DL slot/subframe, and the UL communication is based at least in part on receiving the second DL communication, and the UE may monitor the at least the subset of slots/subframes between the fourth DL slot/subframe and the second DL slot/subframe.

公开(公告)号：US20230341562A1

公开(公告)日：2023-10-26

申请号：US17726919

申请日：2022-04-22

Applicant: QUALCOMM Incorporated

Inventor： Weimin Duan ,  Yuxiang Peng ,  Qiang Wu ,  Mehmet Izzet Gurelli ,  Jun Ma ,  Huilin Xu ,  Lianghai Ji ,  Karthik Anantha Swamy ,  Mohamad Sayed Hassan

IPC: G01S19/25 ,  H04W24/10 ,  H04L5/00

CPC classification number: G01S19/254 ,  H04L5/0051 ,  H04W24/10 ,  H04W84/06

Abstract: Techniques are described for supporting user equipment (UE) positioning in a non-terrestrial network (NTN). To allow calculating a position/location of a UE based on reference signal (RS) measurements to and from one satellite (or a terrestrial base station), a device may be configured to calculate a doppler measurement and a range measurement and report such measurements to be used by a location server to calculate a UE position. An example device may receive a first RS (with the first RS being one of a positioning reference signal (PRS) or a sounding reference signal (SRS)), receive a second RS associated with the first RS, calculate a doppler measurement based on one or both of the first RS or the second RS, and report the doppler measurement. The doppler measurement (such as a measured frequency offset) may be used by a location server to calculate a UE position on the earth surface.

公开(公告)号：US11800551B2

公开(公告)日：2023-10-24

申请号：US17375610

申请日：2021-07-14

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/12 ,  H04L5/00 ,  H04W72/542 ,  H04W72/1268

CPC classification number: H04W72/542 ,  H04L5/0048 ,  H04W72/1268

Abstract: The apparatus may be a device at a UE or a base station. The UE (or base station) may be configured to measure a phase noise of a first local oscillator associated with a first port. The UE (or base station) may further be configured to configure, based on the measured phase noise, an allocation of a first set of one or more REs of a PUSCH (or PDSCH) for at least one PT-RS associated with the first port. The first set of one or more REs may include multiple layers associated with a multiple-layer single-carrier waveform transmission. The UE (or base station) may also be configured to transmit, to a base station (or a UE), the PUSCH (or PDSCH) including the at least one PT-RS, the at least one PT-RS being transmitted via the configured allocation of the first set of one.

公开(公告)号：US11800530B2

公开(公告)日：2023-10-24

申请号：US17222269

申请日：2021-04-05

Applicant: QUALCOMM Incorporated

Inventor： Iyab Issam Sakhnini ,  Yan Zhou ,  Tao Luo ,  Wooseok Nam ,  Qiang Wu ,  Jun Ma ,  Mehmet Izzet Gurelli ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail

IPC: H04W72/12 ,  H04W72/23 ,  H04L5/00 ,  H04W72/50 ,  H04W72/0453

CPC classification number: H04W72/23 ,  H04L5/0012 ,  H04W72/535 ,  H04W72/0453

Abstract: Certain aspects of the subject matter described in this disclosure can be implemented in a method for wireless communication by a user equipment (UE). The method generally includes receiving, from a network entity, signaling that schedules an uplink or downlink transmission on resources that overlap with a time gap for switching from a first set of frequency resources to a second set of frequency resources; and taking an action to process the uplink or downlink transmission so that the uplink or downlink transmission does not overlap with the time gap.

公开(公告)号：US11792059B2

公开(公告)日：2023-10-17

申请号：US17464101

申请日：2021-09-01

Applicant: QUALCOMM Incorporated

Inventor： Wooseok Nam ,  Jing Sun ,  Xiaoxia Zhang ,  Tao Luo ,  Jun Ma ,  Peter Gaal

IPC: H04L1/00 ,  H04L27/26

CPC classification number: H04L27/2613 ,  H04L1/0051 ,  H04L27/2607

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may generate a set of symbols, wherein each symbol of the set of symbols includes a first portion including data and a second portion including a demodulation reference signal (DMRS) sequence, wherein the second portion of each symbol is positioned at the end of the respective symbol. The wireless device may add, to a beginning of each symbol in the set of symbols, a cyclic prefix including the DMRS sequence in the second portion of the respective symbol. The wireless device may then transmit the set of symbols, including the cyclic prefix at the beginning of each respective symbol, in a burst over a wireless channel using a single-carrier waveform.

公开(公告)号：US11785643B2

公开(公告)日：2023-10-10

申请号：US17148283

申请日：2021-01-13

Applicant: QUALCOMM Incorporated

Inventor： Liangping Ma ,  Xiao Feng Wang ,  Peter Gaal ,  Alberto Rico Alvarino ,  Ayan Sengupta ,  Juan Montojo ,  Jun Ma ,  Huilin Xu

IPC: H04W74/08 ,  H04B7/06 ,  H04L27/26 ,  H04L41/0803

CPC classification number: H04W74/0833 ,  H04B7/0602 ,  H04L27/2605 ,  H04L41/0803

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, a random access channel configuration that indicates one or more physical random access channel (PRACH) formats associated with antenna switching. The UE may transmit, to the base station, a PRACH sequence using a PRACH format associated with antenna switching from the one or more PRACH formats associated with antenna switching. Numerous other aspects are described.

公开(公告)号：US11751155B2

公开(公告)日：2023-09-05

申请号：US17222162

申请日：2021-04-05

Applicant: QUALCOMM Incorporated

Inventor： Iyab Issam Sakhnini ,  Tao Luo ,  Qiang Wu ,  Xiaoxia Zhang ,  Jun Ma ,  Wooseok Nam ,  Juan Montojo ,  Jing Sun

IPC: H04W56/00 ,  H04W72/04 ,  H04L5/00 ,  H04W72/23

CPC classification number: H04W56/0035 ,  H04L5/0048 ,  H04W56/004 ,  H04W72/23

Abstract: Aspects described herein relate to communicating a demodulation reference signal (DMRS) corresponding to a downlink control channel, buffering, based on receiving the DMRS, samples of a downlink data channel associated with the downlink control channel, and processing, during on a time period indicated based at least in part on a sequence of the DMRS, at least a portion of the samples of the downlink data channel. Another aspect relates to determining, based at least in part on a sequence of the DMRS, a time offset from the downlink control channel to a downlink data channel, and determining, based at least in part on the time offset, a time period based on which to transmit or start processing samples of the downlink data channel.

公开(公告)号：US11751152B2

公开(公告)日：2023-09-05

申请号：US17451994

申请日：2021-10-22

Applicant: QUALCOMM Incorporated

Inventor： Qingjiang Tian ,  Xiaoxia Zhang ,  Jing Sun ,  Zhifei Fan ,  Arumugam Chendamarai Kannan ,  Jun Ma ,  Tao Luo ,  Juan Montojo

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

CPC classification number: H04W56/001 ,  H04L5/0051 ,  H04L27/26025

Abstract: In one aspect, an extended SSB (ESSB) is provided that includes more than four symbols to facilitate UE reception of SSBs. In this aspect, the base station configures an ESSB comprising an SSB including four symbols and an initial symbol preceding the SSB. The base station transmits and the UE receives at least a portion of the ESSB. The UE processes the ESSB. Thus, higher capacity UEs can benefit from additional coding gain in the initial symbol while lower capacity UEs can switch beams to receive back-to-back ESSBs. In another aspect, a UE performs additional behaviors to receive SSBs. In this aspect, the UE receives a first SSB using a reception beam, and the UE determines to maintain the reception beam for a second SSB or to switch the reception beam during a PSS symbol of the second SSB. Thus, lower capacity UEs can also receive back-to-back SSBs.

公开(公告)号：US11743929B2

公开(公告)日：2023-08-29

申请号：US17230713

申请日：2021-04-14

Applicant: QUALCOMM Incorporated

Inventor： Jun Ma ,  Xiaoxia Zhang ,  Qiang Wu ,  Iyab Issam Sakhnini ,  Jing Sun ,  Mehmet Izzet Gurelli ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail

IPC: H04W4/00 ,  H04W72/53 ,  H04L27/26 ,  H04W56/00 ,  H04W72/0446 ,  H04W72/23

CPC classification number: H04W72/53 ,  H04L27/2607 ,  H04L27/26025 ,  H04W56/001 ,  H04W72/0446 ,  H04W72/23

Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for mitigating timing resolution limitations due to synchronization signal blocks (SSBs) with low subcarrier spacing (SCS). An example method by a user equipment (UE) generally includes detecting a SSB; determining a start time of a control resource set (CORESET) associated with the detected SSB, wherein the start time of the CORESET is aligned with a boundary of a symbol having a larger cyclic prefix (CP) than one or more other symbols in a same half-subframe; and monitoring the CORESET for a physical downlink control channel (PDCCH) transmission.