公开(公告)号：US11632272B1

公开(公告)日：2023-04-18

申请号：US17706026

申请日：2022-03-28

Applicant: QUALCOMM Incorporated

Inventor： Raviteja Patchava ,  Jun Ma ,  Morteza Soltani ,  Jing Sun ,  Xiaoxia Zhang ,  Zhifei Fan ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail

IPC: H04L25/02 ,  H04L27/26 ,  H04J13/00

Abstract: Methods, systems, and devices for wireless communications are described. A network entity may map a demodulation reference signal (DMRS), a truncated sequence, and data in a delay-Doppler domain in accordance with a control signal. The network entity may apply a Fourier transform on the mapped DMRS, the truncated sequence, and the data to generate a signal in the time domain. The network entity may output, and a user equipment (UE) may receive, the signal in the time domain, including the DMRS, the truncated sequence, and the data. The UE may apply a Fourier transform on the received signal in the time domain to generate a mapping of the DMRS and the data in the delay-Doppler domain. The UE may perform channel estimation based on applying the Fourier transform on the received signal.

公开(公告)号：US11627608B2

公开(公告)日：2023-04-11

申请号：US17127632

申请日：2020-12-18

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Zhifei Fan ,  Arumugam Chendamarai Kannan ,  Srinivas Yerramalli ,  Wooseok Nam ,  Tao Luo ,  Sungwoo Park

IPC: H04W74/08 ,  H04W76/11 ,  H04W72/04 ,  H04L5/00 ,  H04W72/0446 ,  H04W72/0453

Abstract: Methods, systems, and devices for wireless communications are described. The method includes receiving a random access configuration for the UE, the random access configuration indicating a subcarrier spacing for random access preambles of a random access procedure and a periodicity of slots including random access channel occasions for transmission of the random access preambles, where the periodicity of the slots is based on the subcarrier spacing for the random access preambles, determining a random access radio network temporary identifier based on the periodicity of the slots and a slot index for a slot in which the UE is to transmit a random access preamble, and transmitting, in the slot, the random access preamble indicating the determined random access radio network temporary identifier.

公开(公告)号：US11627578B2

公开(公告)日：2023-04-11

申请号：US17225893

申请日：2021-04-08

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04W72/044 ,  H04W8/22 ,  H04W72/0446

Abstract: Methods, systems, and devices for wireless communications are described. A device such as a user equipment (UE) or a base station may identify a beam switching capability of the UE, the beam switching capability indicating a threshold quantity of beam switches during a transmission time interval, a threshold quantity of symbol periods between beam switching operations, or a combination thereof. The device may determine that the beam switching capability of the UE is satisfied based at least in part on one or more parameters (e.g., one or more symbol period durations, one or more quantities of beam switches during a transmission time interval, one or more adjustment parameters, one or more threshold values associated with the capability of the UE, etc.). The device may perform one or more beam switching operations based on determining that the beam switching capability is satisfied.

公开(公告)号：US11621813B2

公开(公告)日：2023-04-04

申请号：US17203624

申请日：2021-03-16

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Zhifei Fan ,  Jun Ma ,  Wooseok Nam ,  Iyab Issam Sakhnini ,  Tao Luo

IPC: H04L5/00 ,  H04L27/26 ,  H04W72/0446

Abstract: The apparatus is configured to transmit and/or receive GDMRS that may be scrambled based on a same scrambling identifier (ID) and shared for a plurality of UEs or channels. The apparatus, in some configurations, is further configured to multiplex, in time, data for the plurality of UEs or channels into different segments within each symbol in a set of symbols. The apparatus is further configured to transmit and/or receive the multiplexed data for the plurality of UEs or channels. In some configurations, the apparatus is further configured to demodulate the received data based on the GDMRS, and extract at least one segment for a UE or a plurality of channels associated with the apparatus within the demodulated data for subsequent decoding at the apparatus. In some configurations the extraction is based on a SLIV transmitted and/or received by the apparatus.

公开(公告)号：US11606175B2

公开(公告)日：2023-03-14

申请号：US16926547

申请日：2020-07-10

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Tanumay Datta ,  Ananta Narayanan Thyagarajan ,  Jing Sun ,  Xiaoxia Zhang ,  Zhifei Fan

IPC: H04L5/00 ,  H04W72/12 ,  H04L27/26

Abstract: Certain aspects of the present disclosure provide techniques for enhanced physical uplink control channel (PUCCH) transmission. In some cases, a UE obtains payload bits to be conveyed in a physical uplink control channel (PUCCH) transmission via an interlace of resource blocks (RBs), determines a group of the RBs available to the UE, and transmits the payload bits using the determined group of RBs, wherein the transmitting involves modulating different RBs of the group by at least one of different payload bits or sequences.

公开(公告)号：US11601967B2

公开(公告)日：2023-03-07

申请号：US17105456

申请日：2020-11-25

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/12 ,  H04W72/14 ,  H04B7/0417 ,  H04B7/0456 ,  H04W72/04 ,  H04W72/0446 ,  H04W72/1263

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a grant scheduling a downlink transmission of a set of configurable downlink transmissions. The downlink transmission may include reference slots corresponding to offset values associated with one or more feedback occasions. The UE may construct a feedback codebook based on a first quantity of slots in the set of configurable downlink transmissions, a second quantity of reference slots in the set of configurable downlink transmissions, and a third quantity of configurable offset values associated with one or more feedback occasions. Based on a size of the feedback codebook, the UE may generate feedback bits for reporting whether the UE successfully received a downlink transmission in corresponding slots. In some examples, the UE may identify a slot with a symbol reserved for an uplink transmission, and skip generating a corresponding feedback bit for the identified slot.

公开(公告)号：US11546916B2

公开(公告)日：2023-01-03

申请号：US17081878

申请日：2020-10-27

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L1/00 ,  H04L27/26 ,  H04W72/12

Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for performing rate matching when resources for a physical downlink shared channel (PDSCH) overlap with resources of a control resource set (CORESET) in which a physical downlink control channel (PDCCH) that scheduled the PDSCH. As used herein, rate matching generally refers to the process of repeating or puncturing bits on a transport channel.

公开(公告)号：US11540268B2

公开(公告)日：2022-12-27

申请号：US17172630

申请日：2021-02-10

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04W72/14 ,  H04W72/12 ,  H04L5/00

Abstract: A configuration for a single transport block spanning over multiple slots and having a noncontiguous time domain allocation. The apparatus configures DCI that schedules a plurality of PDSCH symbols or a plurality of PUSCH symbols with a single transport block that spans more than one slot and at least one gap between two adjacent PDSCH symbols or PUSCH symbols. Each of the plurality of PDSCH symbols or PUSCH symbols are contiguous and have a respective SLIV. The apparatus transmits the DCI to at least one UE.

公开(公告)号：US11502811B2

公开(公告)日：2022-11-15

申请号：US17019978

申请日：2020-09-14

Applicant: QUALCOMM Incorporated

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

IPC: H04L12/28 ,  H04L5/00 ,  H04W56/00 ,  H04W72/04

Abstract: Subcarrier spacing (SCS) for data may be adapted or dynamically configured based on the occurrence or presence of a synchronization signal block (SSB) transmission. For example, during a SSB transmission, the SCS of data may be automatically switched from some default data SCS to a second SCS (e.g., the SCS of the SSB) to allow for frequency division multiplexing (FDM) of data and SSB where the data and SSB use the same numerology. As such, communicating devices (e.g., a base station and a user equipment (UE)) may identify some location or configuration for a SSB, and may determine a second subcarrier spacing (e.g., a subcarrier spacing associated with the SSB) such that the SCS of data may be adapted to the second subcarrier spacing during the FDM of the SSB and the data. The SSB and data may thus be contemporaneously transmitted or received using the second SCS.

公开(公告)号：US20220182993A1

公开(公告)日：2022-06-09

申请号：US17115613

申请日：2020-12-08

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Jun Ma ,  Zhifei Fan ,  Wooseok Nam ,  Iyab Issam Sakhnini ,  Tao Luo

IPC: H04W72/04 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communications are described. Devices in a wireless communications system may support different configurations to support intra-symbol multiplexing for communications between the devices using a single carrier waveform. For example, the different configurations may include symbol level cyclic prefixes, device-specific or channel-specific cyclic prefixes, device-specific or channel-specific guard intervals, or a combination thereof to support the intra-symbol multiplexing. That is, the cyclic prefixes or guard intervals may separate different fractions of a symbol, such that individual signals communicated in each of the different fractions do not leak into a subsequent fraction to cause interference. In some implementations, the cyclic prefixes or guard intervals may be enabled for a subset of devices or channels. A configuration for this intra-symbol multiplexing with device-specific or channel-specific cyclic prefixes or guard intervals may be signaled in a control message to the corresponding devices.