公开(公告)号：US20230090492A1

公开(公告)日：2023-03-23

申请号：US17482315

申请日：2021-09-22

Applicant: QUALCOMM Incorporated

Inventor： Jun MA ,  Xiaoxia ZHANG ,  Morteza SOLTANI ,  Raviteja PATCHAVA ,  Elyes BALTI ,  Tao LUO ,  Iyab Issam SAKHNINI ,  Zhifei FAN ,  Dung Ngoc DOAN

IPC: H04L1/00 ,  H03M13/25 ,  H04L27/34

Abstract: Aspects present herein relate to methods and devices for wireless communication including an apparatus, e.g., a UE and/or a base station. The apparatus may encode a plurality of bits associated with QAM, the plurality of bits corresponding to a circular buffer associated with at least one RV, the plurality of bits including a plurality of systematic bits. The apparatus may also transfer the plurality of bits from the circular buffer associated with the at least one RV to a first buffer and a second buffer. Additionally, the apparatus may map the plurality of bits from the first buffer and the second buffer to a plurality of modulation symbols.

公开(公告)号：US20230080844A1

公开(公告)日：2023-03-16

申请号：US18056365

申请日：2022-11-17

Applicant: QUALCOMM Incorporated

Inventor： Xiao Feng WANG ,  Iyab Issam SAKHNINI ,  Jun MA ,  Huilin XU ,  Dan ZHANG

IPC: 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 information that indicates whether to perform a first random access channel (RACH) procedure for a non-terrestrial network or a second RACH procedure for a terrestrial network, wherein the first RACH procedure is configured to support a larger number of UEs contemporaneously performing a RACH procedure than the second RACH procedure. Responsive to the information indicating that the UE is to perform the first RACH procedure, the UE may perform the first RACH procedure. Numerous other aspects are provided.

公开(公告)号：US20230065940A1

公开(公告)日：2023-03-02

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

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：US20230058532A1

公开(公告)日：2023-02-23

申请号：US17759073

申请日：2020-02-07

Applicant: QUALCOMM Incorporated

Inventor： Qiang WU ,  Xiao Feng WANG ,  Huilin XU ,  Iyab Issam SAKHNINI ,  Dan ZHANG ,  Yiqing CAO ,  Jun MA

IPC: H04W64/00

Abstract: Disclosed are techniques for positioning. A receiver receives complementary timing information associated with the positioning reference signals (PRS) of a repetition of a PRS sequence. The complementary timing information distinguishes a repetition of a PRS sequence from remaining repetitions of the PRS sequence. Based on the complementary timing information associated with different PRS from different non-terrestrial vehicles indicating that the PRS were transmitted during the same radio frame, the receiver can determine an observed time difference of arrival (OTDOA) between the PRS received from the respective non-terrestrial vehicles.

公开(公告)号：US20230053650A1

公开(公告)日：2023-02-23

申请号：US17405596

申请日：2021-08-18

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia ZHANG ,  Raviteja PATCHAVA ,  Morteza SOLTANI ,  Jun MA ,  Jing SUN ,  Peter GAAL ,  Iyab Issam SAKHNINI

IPC: H04L27/26 ,  H04W28/26 ,  H04W72/04 ,  H04W72/12

Abstract: Disclosed are techniques for wireless communication. In an aspect, a wireless device maps data, a unique word (UW) sequence, and a suppression signal to a set of reserved time-domain resources based on a time-domain resource mapping and reservation rule to produce DFT input data. DFT processing is performed on the DFT input data to produce IFFT input data. IFFT processing is performed on the IFFT input data to produce the GI-based waveform with a data part (e.g., non-zero part) and a tail part (e.g., zero tail part). The wireless device may further transmit the GI-based waveform.

公开(公告)号：US20230052894A1

公开(公告)日：2023-02-16

申请号：US17401738

申请日：2021-08-13

Applicant: QUALCOMM Incorporated

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

IPC: H04W36/06 ,  H04W36/00 ,  H04L5/00 ,  H04L1/00

Abstract: A (repeater) node may identify a first indication of a waveform switch associated with a first link between a base station and the node or a second link between the node and a UE. A waveform switch associated with the first link may be triggered by the base station or the node. A waveform switch associated with the second link may be triggered by the node or the UE. The waveform switch may correspond to a first switch from an OFDM waveform to an SC waveform or a second switch from the SC waveform to the OFDM waveform. The base station may transmit, to the node, an indication of a post-waveform switch resource mapping between a first waveform associated with the first link and a second waveform associated with the second link. The node may execute the waveform switch associated with the first link or the second link.

公开(公告)号：US20230024935A1

公开(公告)日：2023-01-26

申请号：US17443400

申请日：2021-07-26

Applicant: QUALCOMM Incorporated

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

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

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may receive, using a first beam, a first physical random access channel (PRACH) communication during a first random access channel (RACH) occasion. The base station may receive, during the first RACH occasion, a data communication having a timing that is aligned with a timing of the PRACH communication to provide a beam switching gap before reception of a second PRACH communication during a second RACH occasion. Numerous other aspects are described.

公开(公告)号：US20230006873A1

公开(公告)日：2023-01-05

申请号：US17305292

申请日：2021-07-02

Applicant: QUALCOMM Incorporated

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

IPC: H04L27/26 ,  H04L5/00 ,  H04W80/02

Abstract: Apparatus, methods, and computer-readable media for facilitating multiplexing of time-varying DMRS within a symbol are disclosed herein. An example method for wireless communication at a receiving device includes receiving a first symbol of a single carrier waveform, the first symbol including a first set of DMRS resources. The example method also includes receiving a second symbol of the single carrier waveform, the second symbol including a second set of DMRS resources, the second set of DMRS resources associated with at least one of a DMRS starting location and a DMRS duration that is different than the first set of DMRS resources.

公开(公告)号：US20220360401A1

公开(公告)日：2022-11-10

申请号：US17316669

申请日：2021-05-10

Applicant: QUALCOMM Incorporated

Inventor： Morteza SOLTANI ,  Jun MA ,  Xiaoxia ZHANG ,  Iyab Issam SAKHNINI ,  Hemant SAGGAR

IPC: H04L5/00 ,  H04L5/22

Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for flexible intra-symbol multiplexing of DMRS of different antenna ports for single carrier waveforms. A base station may transmit one or more DMRSs within a symbol and provide an intra-symbol guard interval prior to each of the one or more DMRSs. The intra-symbol guard interval may have a duration that is based on a duration of a CP. A UE may receive the one or more demodulation reference signals DMRSs within the symbol based on the intra-symbol guard interval prior to each of the one or more DMRSs, and perform a channel estimation based on at least one of the one or more DMRSs.

公开(公告)号：US20220295569A1

公开(公告)日：2022-09-15

申请号：US17201598

申请日：2021-03-15

Applicant: QUALCOMM Incorporated

Inventor： Iyab Issam SAKHNINI ,  Tao LUO ,  Xiaoxia ZHANG ,  Jun MA

IPC: H04W74/08 ,  H04W74/00 ,  H04L5/00 ,  H04L27/26

Abstract: For a two-step random access channel (RACH) process, the base station determines a random access configuration to configure a user equipment (UE) with the two-step RACH process that includes a communication of a first message including a preamble portion and a payload portion, where the determining the random access configuration includes determining to exclude a demodulation reference signal (DMRS) from the payload portion based on satisfaction of conditions. The base station generates configuration information including the random access configuration indicating the two-step RACH process, the configuration information including a configuration for a transmission of the preamble portion and the payload portion without the DMRS based on the satisfaction of the conditions. The base station transmits the configuration information to the UE, and subsequently receives, based on the configuration information, a first RACH message that includes the preamble portion and the payload portion without the DMRS, using the single carrier waveform.