公开(公告)号：US11750430B2

公开(公告)日：2023-09-05

申请号：US17446593

申请日：2021-08-31

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jun Ma ,  Morteza Soltani ,  Raviteja Patchava ,  Jing Sun ,  Iyab Issam Sakhnini ,  Tao Luo ,  Peter Gaal

IPC: H04L27/26 ,  H04L5/00 ,  H04W92/18

CPC classification number: H04L27/2607 ,  H04L5/0051 ,  H04L27/2613 ,  H04L27/2636 ,  H04W92/18

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive first configuration information indicating a first guard interval associated with sidelink communications. The UE may transmit, to a base station and another UE, a first sidelink communication using the first guard interval. The UE may transmit, to the base station and using a second guard interval having a second length that is different from a first length of the first guard interval, an uplink communication. Numerous other aspects are described.

公开(公告)号：US11729655B2

公开(公告)日：2023-08-15

申请号：US17344873

申请日：2021-06-10

Applicant: QUALCOMM Incorporated

Inventor： Morteza Soltani ,  Jun Ma ,  Iyab Issam Sakhnini ,  Hemant Saggar

IPC: H04L27/26 ,  H04W24/10 ,  H04B17/336 ,  H04L5/00 ,  H04W24/08

CPC classification number: H04W24/10 ,  H04B17/336 ,  H04L5/0051 ,  H04W24/08

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may determine a phase noise profile and may transmit the phase noise profile to a receiving device. The receiving device may use the phase noise profile and received phase tracking reference signals to more accurately determine phase errors on a wireless channel between the two devices and compensate for the phase noise errors. In examples where the UE transmits the phase noise profile to the base station, the UE may include the phase noise profile in a measurement report or in a radio resource control (RRC) message, among other examples. In examples where the base station transmits the phase noise profile to a UE, the base station may include the phase noise profile in a broadcast message, a unicast message, or an RRC message.

公开(公告)号：US20230254077A1

公开(公告)日：2023-08-10

申请号：US17649041

申请日：2022-02-07

Applicant: QUALCOMM Incorporated

Inventor： Iyab Issam SAKHNINI ,  Tao LUO ,  Hemant SAGGAR ,  Xiaoxia Zhang ,  Jun Ma

IPC: H04L5/00 ,  H04L27/26

CPC classification number: H04L5/0044 ,  H04L27/2607 ,  H04L27/2636

Abstract: A wireless device (e.g., a UE or a base station) may generate a hybrid symbol including a CP portion, a data portion, and at least one of a header portion or a tail portion. The CP portion may be located at a beginning of the hybrid symbol, and may include one or more CP samples that correspond to a predefined number of samples at an end of the hybrid symbol. The data portion may be located after the header portion or before the tail portion. The header portion may be located after the CP portion, and may include one or more predefined header samples. The tail portion may be located at the end of the hybrid symbol, and may include one or more predefined tail samples. The wireless device may generate a waveform including the generated hybrid symbol. The wireless device may transmit a signal based on the generated waveform.

公开(公告)号：US11671932B2

公开(公告)日：2023-06-06

申请号：US17152693

申请日：2021-01-19

Applicant: QUALCOMM Incorporated

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

IPC: H04W56/00 ,  H04W68/00 ,  H04W74/08 ,  H04W76/11 ,  H04W76/27 ,  H04W84/06

CPC classification number: H04W56/005 ,  H04W68/005 ,  H04W74/0833 ,  H04W76/11 ,  H04W76/27 ,  H04W84/06

Abstract: Various aspects relate to adjusting communication timing in response to a switch from one feeder link to another feeder link in a non-terrestrial network. For example, when a satellite moves out of the coverage area of a first ground network entity (or if the first ground network entity is turned off), the satellite switches to a second ground network entity. The resulting switch from a first feeder link for the first ground network entity to a second feeder link for the second ground network entity may cause a timing glitch that adversely affects the UEs under the coverage of the satellite. The disclosure relates in some aspects to sending an indication of the switch and/or a common timing adjust command to all of the UEs affected by the feeder link switch.

公开(公告)号：US11665745B2

公开(公告)日：2023-05-30

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 ,  H04W74/00 ,  H04B7/185 ,  H04W72/044

CPC classification number: H04W74/0833 ,  H04B7/18576 ,  H04W72/044 ,  H04W74/006

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：US11665705B2

公开(公告)日：2023-05-30

申请号：US17235759

申请日：2021-04-20

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/12 ,  H04W72/23 ,  H04L1/00

CPC classification number: H04W72/23 ,  H04L1/0013

Abstract: A method of wireless communication by a user equipment (UE) includes receiving a first stage of piggyback downlink control information (DCI). The first stage includes scheduling information for a second stage of piggyback DCI. The method also includes receiving the second stage in accordance with the scheduling information. The second stage includes component DCIs. The first and second stages are separately decoded. A method of wireless communication by a base station includes transmitting a first stage of piggyback DCI. The base station also transmits the second stage in accordance with the scheduling information. The second stage includes component DCIs. The first and second stages are separately coded.

公开(公告)号：US11653347B2

公开(公告)日：2023-05-16

申请号：US17121697

申请日：2020-12-14

Applicant: QUALCOMM Incorporated

Inventor： Anantha Krishna Karthik Nagarajan ,  Jing Sun ,  Xiaoxia Zhang ,  Tao Luo ,  Jun Ma ,  Wooseok Nam ,  Zhifei Fan ,  Qingjiang Tian ,  Hemant Saggar ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail

IPC: H04W72/04 ,  H04W72/044 ,  H04W74/00 ,  H04W72/02 ,  H04W74/08

CPC classification number: H04W72/0473 ,  H04W72/02 ,  H04W72/0413 ,  H04W74/004 ,  H04W74/0833

Abstract: Apparatus, methods, and computer-readable media for coexistence of multiple uplink control channel formats for wireless communication with power spectral density limitation are disclosed herein. A user equipment (UE) may communicate, with a base station (BS) over a random access channel on a first set of random access resources or a second set of random access resources, a random access request based on a comparison between an intended transmit power of the random access request and a reference transmit power threshold. The UE may communicate, on a first set of uplink resources, a control message for initial network access when the random access request is communicated on the first set of random access resources. The UE also may communicate, on a second set of uplink resources, the control message when the random access request is communicated on the second set of random access resources.

公开(公告)号：US11617210B2

公开(公告)日：2023-03-28

申请号：US17195191

申请日：2021-03-08

Applicant: QUALCOMM Incorporated

Inventor： Iyab Issam Sakhnini ,  Xiaoxia Zhang ,  Jing Sun ,  Tao Luo ,  Zhifei Fan ,  Arumugam Chendamarai Kannan ,  Juan Montojo ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Qiang Wu ,  Jun Ma ,  Mehmet Izzet Gurelli

IPC: H04L27/26 ,  H04W74/00 ,  H04W74/08

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a physical random access channel (PRACH) preamble configuration that indicates a first preamble format for a first PRACH preamble and a second preamble format for a second PRACH preamble, wherein the first preamble format is different from the second preamble format. The UE may transmit the first PRACH preamble as part of a random access procedure based at least in part on the PRACH preamble configuration, wherein transmitting the first PRACH preamble enables a determination of a symbol boundary offset. The UE may transmit the second PRACH preamble as part of the random access procedure based at least in part on the PRACH preamble configuration, wherein transmitting the second PRACH preamble enables a determination of a symbol timing offset. Numerous other aspects are described.

公开(公告)号：US11616676B1

公开(公告)日：2023-03-28

申请号：US17652254

申请日：2022-02-23

Applicant: QUALCOMM Incorporated

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

IPC: H04L27/26 ,  H04L5/00

Abstract: Method and apparatus for PTRS for OTFS waveforms. The apparatus measures a PTRS using an OTFS including a delay-Doppler domain. The OTFS includes a plurality of symbols in the delay-Doppler domain based on the PTRS. A first symbol of the plurality of symbols includes a first PTRS resource sample having a first value in the delay-Doppler domain. A second symbol of the plurality of symbols includes a second PTRS resource sample having a second value in the delay-Doppler domain. The first PTRS resource sample is adjacent to the second PTRS resource sample. The apparatus performs phase noise tracking for a data channel based on the measured PTRS.

公开(公告)号：US11611459B1

公开(公告)日：2023-03-21

申请号：US17412080

申请日：2021-08-25

Applicant: QUALCOMM Incorporated

Inventor： Jun Ma ,  Xiaoxia Zhang ,  Iyab Issam Sakhnini ,  Wooseok Nam ,  Morteza Soltani

IPC: H04L25/03 ,  H04L25/02

Abstract: Disclosed are techniques for wireless communication. In an aspect, a wireless device determines a symbol configuration for transmission of SC-FDE waveform with zero gaps arranged between a communication channel part, RS part, and CP part. The SC-FDE waveform is transmitted to another wireless device, which processes the SC-FDE waveform.