公开(公告)号：US20230327827A1

公开(公告)日：2023-10-12

申请号：US17658411

申请日：2022-04-07

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04B7/0456

CPC classification number: H04L5/0023 ,  H04B7/0456 ,  H04L5/0046 ,  H04L5/0098

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may apply an orthogonal time frequency space (OTFS) precoding to a plurality of tracking reference signal (TRS) resource samples allocated in a delay-Doppler domain to obtain a plurality of TRS symbols with the OTFS precoding. The first network node may transmit, to a second network node, a TRS in which the plurality of TRS symbols with the OTFS precoding have a uniform spacing in a time domain. Numerous other aspects are described.

公开(公告)号：US20230318892A1

公开(公告)日：2023-10-05

申请号：US17655339

申请日：2022-03-17

Applicant: QUALCOMM Incorporated

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

IPC: H04L27/26 ,  H04L5/00

CPC classification number: H04L27/2607 ,  H04L5/0048 ,  H04L27/2613

Abstract: Certain aspects of the present disclosure provide techniques for time division multiplexing (TDMing) user equipment (UE) data using guard interval (GI)-based waveforms. An example method generally includes communicating with a device using a frame format, the frame format comprising a first symbol, a second symbol, and a third symbol, wherein: the first symbol comprises a first data portion for a first UE and a first GI corresponding to the first UE; the third symbol comprises a second data portion for a second UE and a second GI corresponding to the second UE, wherein the third symbol is later in time than the first symbol; and the second symbol comprises a gap or a reference signal (RS), a third GI corresponding to the first UE, and a fourth GI corresponding to the second UE, wherein the second symbol is between the first and third symbol in time.

公开(公告)号：US20230291468A1

公开(公告)日：2023-09-14

申请号：US17691855

申请日：2022-03-10

Applicant: QUALCOMM Incorporated

Inventor： Weimin DUAN ,  Huilin XU ,  Lianghai JI ,  Mehmet Izzet GURELLI ,  Jun MA ,  Qiang WU ,  Bala RAMASAMY ,  Karthik ANANTHA SWAMY

IPC: H04B7/185 ,  H04W56/00 ,  H04L5/00

CPC classification number: H04B7/18554 ,  H04W56/0045 ,  H04W56/0065 ,  H04B7/18565 ,  H04L5/0048

Abstract: Systems and techniques are provided for wireless communications performed at a network entity. For example, the systems and techniques can include obtaining, at the network entity, a target relative time difference (RTD). A transmission timing pre-compensation can be determined at the network entity between a first reference signal and a second reference signal, wherein the transmission timing pre-compensation is determined based on the target RTD and one or more network delay components. The first reference signal and the second reference signal can be transmitted using the transmission timing pre-compensation to offset the first reference signal from the second reference signal by the target RTD.

公开(公告)号：US20230247629A1

公开(公告)日：2023-08-03

申请号：US18297151

申请日：2023-04-07

Applicant: QUALCOMM Incorporated

Inventor： Xiao Feng WANG ,  Iyab Issam SAKHNINI ,  Peter GAAL ,  Jun MA ,  Huilin XU

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

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

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：US20230247577A1

公开(公告)日：2023-08-03

申请号：US18296732

申请日：2023-04-06

Applicant: QUALCOMM Incorporated

Inventor： Alberto RICO ALVARINO ,  Seyedkianoush HOSSEINI ,  Xiao Feng WANG ,  Liangping MA ,  Ayan SENGUPTA ,  Jun MA ,  Huilin XU ,  Peter GAAL ,  Bharat SHRESTHA

IPC: H04W56/00 ,  H04L1/1812 ,  H04W72/0446 ,  H04L27/26 ,  H04W74/08 ,  H04W72/23

CPC classification number: H04W56/009 ,  H04W56/005 ,  H04L1/1819 ,  H04W72/0446 ,  H04L27/26025 ,  H04W74/0833 ,  H04W72/23 ,  H04W84/06

Abstract: A scheduling offset between an uplink and downlink radio frame timing structure of a user equipment (UE) may be updated to provide for more efficient utilization of hybrid automatic repeat request (HARQ) processes in a non-terrestrial network. For instance, different UEs may experience different round trip delays (RTDs) with a non-terrestrial cell. Different UEs may be configured with different scheduling offsets such that scheduling delays may be reduced and HARQ processes identifiers may be reused more rapidly. Additionally or alternatively, wireless communications systems may define one or more separation distances (or timing thresholds) for timing between communications and HARQ processes may be reused based on the separation distance threshold (e.g., such that a satellite may reuse a HARQ process ID for two scheduled communications that have not yet been performed by the UE).

公开(公告)号：US20230246679A1

公开(公告)日：2023-08-03

申请号：US17649502

申请日：2022-01-31

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/0456 ,  H04L5/00 ,  H04W72/04 ,  H04B7/185

CPC classification number: H04B7/0478 ,  H04L5/0048 ,  H04W72/0446 ,  H04B7/1855

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may precode a sounding reference signal (SRS) transmission using a delay-Doppler precoder. The UE may transmit, after precoding the SRS transmission using the delay-Doppler precoder, the SRS transmission in an SRS symbol in a slot. Numerous other aspects are described.

公开(公告)号：US20230077142A1

公开(公告)日：2023-03-09

申请号：US17470735

申请日：2021-09-09

Applicant: QUALCOMM Incorporated

Inventor： Huilin XU ,  Jun MA ,  Weimin DUAN ,  Mehmet Izzet GURELLI ,  Qiang WU

IPC: H04L27/26 ,  H04L5/00

Abstract: Example implementations include a method, apparatus and computer-readable medium of wireless communication for applying resource element (RE) skipping to a symbol where a beam change is to occur. A transmitter and a receiver determine that a beam change is to occur during the symbol. The transmitter allocates bits to a subset of REs for the symbol in a frequency domain allocation. Each RE of the subset is spaced apart by a number of empty REs. The transmitter performs an inverse fast Fourier transform (IFFT) on the REs to generate a time domain signal including a number of repetitions of a transmitted waveform. The receiver receives the time domain signal during at least a portion of the symbol. The receiver performs a fast Fourier transform (FFT) on the time domain signal and determines transmitted bits or a channel from the subset of REs output from the FFT.

公开(公告)号：US20230069330A1

公开(公告)日：2023-03-02

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.

公开(公告)号：US20230064285A1

公开(公告)日：2023-03-02

申请号：US17446594

申请日：2021-08-31

Applicant: QUALCOMM Incorporated

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

IPC: H04W88/14 ,  H04L27/26 ,  H04L5/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, an integrated access and backhaul (IAB) node may receive, from a first wireless device, an uplink communication using a first guard interval. The IAB may receive, from a second wireless device, a downlink communication using a second guard interval, a second length of the second guard interval being different from a first length of the first guard interval. The IAB may process the uplink communication and the downlink communication in a same fast Fourier transform window. Numerous other aspects are described.

公开(公告)号：US20230036387A1

公开(公告)日：2023-02-02

申请号：US17443879

申请日：2021-07-28

Applicant: QUALCOMM Incorporated

Inventor： Morteza SOLTANI ,  Jun MA ,  Xiaoxia ZHANG ,  Iyab Issam SAKHNINI ,  Tao LUO ,  Juan MONTOJO ,  Peter GAAL ,  Raviteja PATCHAVA ,  Hemant SAGGAR

IPC: H04W56/00 ,  H04L5/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a synchronization signal block (SSB) transmitted using a single carrier quadrature amplitude modulation (SC-QAM) waveform, wherein the SSB has a uniform bandwidth allocation for each of a primary synchronization signal (PSS) included in the SSB, a secondary synchronization signal (SSS) included in the SSB, and physical broadcast channel (PBCH) data included in the SSB. The UE may perform initial channel access based at least in part on the SSB. Numerous other aspects are described.