公开(公告)号：US12294534B2

公开(公告)日：2025-05-06

申请号：US17482100

申请日：2021-09-22

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Zhifei Fan ,  Xiaoxia Zhang ,  Tao Luo ,  Jing Sun ,  Wooseok Nam

IPC: H04L5/00 ,  H04W72/0453

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for enabling user equipment (UE) and a base station (BS) to communicate using a set of frequency resources in which a subset of frequency resources include a phase tracking reference signal (PTRS). In one aspect, the UE may measure the PTRS in the subset of frequency resources, and select a phase noise compensation that is used to demodulate a communication from the BS. The subset of frequency resources may be selected from the set frequency resources based on channel conditions of different subsets of frequency resources. The BS may provide an indication of the selected subset of frequency resources to the UE, such as in control information that schedules the communication from the BS.

公开(公告)号：US12041002B2

公开(公告)日：2024-07-16

申请号：US17651010

申请日：2022-02-14

Applicant: QUALCOMM Incorporated

Inventor： Mohamed Fouad Ahmed Marzban ,  Xiaoxia Zhang ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Zhifei Fan ,  Wooseok Nam ,  Tao Luo ,  Jing Sun ,  Qingjiang Tian ,  Hemant Saggar

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

CPC classification number: H04L5/0048 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/0094 ,  H04L27/2666

Abstract: Certain aspects of the present disclosure provide techniques for receiving an indication of variable tracking reference signal (TRS). A method that may be performed by a user equipment (UE) includes determining a configuration indicating a value for a variable tracking reference signal (TRS) density, monitoring for TRSs from a base station (BS) according to the indicated value for the variable TRS density, and performing at least one of frequency tracking or timing tracking based on the monitoring.

公开(公告)号：US11916812B2

公开(公告)日：2024-02-27

申请号：US16875441

申请日：2020-05-15

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Tao Luo ,  Juan Montojo ,  Jing Sun ,  Srinivas Yerramalli ,  Vinay Chande ,  Zhifei Fan ,  Olufunmilola Omolade Awoniyi-Oteri ,  Sungwoo Park ,  Arumugam Chendamarai Kannan

IPC: H04L5/00 ,  H04W72/20 ,  H04W72/54

CPC classification number: H04L5/0007 ,  H04W72/20 ,  H04W72/54

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a control channel that uses an orthogonal frequency division multiplexing (OFDM) waveform. The UE may transmit or receiving a data channel, associated with the control channel, that uses a single-carrier (SC) waveform. Numerous other aspects are provided.

公开(公告)号：US11902972B2

公开(公告)日：2024-02-13

申请号：US17448414

申请日：2021-09-22

Applicant: QUALCOMM Incorporated

Inventor： Qingjiang Tian ,  Mostafa Khoshnevisan ,  Jing Sun ,  Olufunmilola Omolade Awoniyi-Oteri ,  Wooseok Nam ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Zhifei Fan ,  Xiaoxia Zhang ,  Tao Luo

IPC: H04W72/1273 ,  H04W72/1263

CPC classification number: H04W72/1273

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect a physical downlink shared channel (PDSCH) transmission associated with a multi-PDSCH semi-persistent scheduling (SPS) that potentially conflicts with a second transmission in a slot. The UE may determine to keep at least one of the PDSCH transmission associated with the multi-PDSCH SPS or the second transmission in the slot based at least in part on one or more rules. The UE may perform, with a base station in the slot, at least one of the PDSCH transmission associated with the multi-PDSCH SPS or the second transmission that is kept based at least in part on the one or more rules. Numerous other aspects are described.

公开(公告)号：US20240031084A1

公开(公告)日：2024-01-25

申请号：US17814114

申请日：2022-07-21

Applicant: QUALCOMM Incorporated

Inventor： Raviteja Patchava ,  Xiaoxia Zhang ,  Junyi Li ,  Zhifei Fan ,  Jing Sun ,  Tao Luo ,  Morteza Soltani

IPC: H04L5/00 ,  H04L27/01

CPC classification number: H04L5/0007 ,  H04L5/0053 ,  H04L27/01

Abstract: Certain aspects of the present disclosure provide techniques for delay-Doppler processing in orthogonal frequency domain multiplexing (OFDM). A method of wireless communication includes obtaining an indication of a first resource allocation associated with a first signal; obtaining the first signal in an OFDM resource grid based at least in part on the first resource allocation; and processing the first signal in a delay-Doppler domain.

公开(公告)号：US11856581B2

公开(公告)日：2023-12-26

申请号：US17136929

申请日：2020-12-29

Applicant: QUALCOMM Incorporated

Inventor： Qingjiang Tian ,  Jing Sun ,  Xiaoxia Zhang ,  Zhifei Fan ,  Tao Luo ,  Wooseok Nam ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail

IPC: H04W72/23 ,  H04W72/1273

CPC classification number: H04W72/23 ,  H04W72/1273

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a physical downlink shared channel (PDSCH) grant scheduling a set of PDSCH transmissions, wherein one or more PDSCH transmissions, of the set of PDSCH transmissions, are associated with a size and length indicator value (SLIV), and wherein at least one orthogonal frequency division multiplexing (OFDM) symbol overlaps with a semi-static uplink symbol. The UE may monitor for at least one PDSCH transmission, of the set of PDSCH transmissions, in accordance with the PDSCH grant. Numerous other aspects are described.

公开(公告)号：US11736221B2

公开(公告)日：2023-08-22

申请号：US17183268

申请日：2021-02-23

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Jing Sun ,  Xiaoxia Zhang ,  Tao Luo ,  Zhifei Fan

IPC: H04L1/00 ,  H04L5/00 ,  H04W72/0446 ,  H04W76/27 ,  H04W72/23

CPC classification number: H04L1/0007 ,  H04L5/0053 ,  H04W72/0446 ,  H04W72/23 ,  H04W76/27

Abstract: Aspects presented herein may enable a transmitter or a receiver to determine a size of a TB that spans more than one slot. In one aspect, a transmitter determines a multiple slot overhead parameter size for a TB of a shared channel based on an allocation of multiple slots. The transmitter calculates a number of REs allocated for the TB of the shared channel based on a number of subcarriers in a PRB, a number of scheduled symbols in a slot, a number of REs for DMRS per PRB, the multiple slot overhead parameter size, and a number of allocated PRBs. The transmitter transmits the TB of the shared channel using the calculated number of REs.

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：US11601253B2

公开(公告)日：2023-03-07

申请号：US16951665

申请日：2020-11-18

Applicant: QUALCOMM Incorporated

Inventor： Akula Reddy ,  Jing Sun ,  Tao Luo ,  Xiaoxia Zhang ,  Srinivas Yerramalli ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Zhifei Fan ,  Sungwoo Park ,  Wooseok Nam

IPC: H04W4/00 ,  H04L5/00 ,  H04W72/0453 ,  H04W72/04 ,  H04W56/00 ,  H04W74/08

Abstract: A wireless communication system utilizes a synchronization signal block (SSB) structure to enable beam switching at higher sub carrier spacing (SCS) or uplink transmissions within an SSB. The SSB structure has a first SCS for an SSB transmission and a second SCS for a data transmission. The SSB structure is based on the first SCS and the second SCS, with the SSB structure including at least one gap between SSB symbols or between SSBs. The wireless communication system transmits or receives an SSB based on the SSB structure. A base station may transmit a downlink signal during the gap, for example, where the second SCS is much greater than the first SCS. A user equipment may transmit an uplink signal such as an acknowledgment during the at least one gap. The user equipment or the base station may perform analog beam switching during the at least one gap between SSBs.