公开(公告)号：US20210297212A1

公开(公告)日：2021-09-23

申请号：US16948155

申请日：2020-09-04

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia ZHANG ,  Jing SUN ,  Zhifei FAN ,  Srinivas YERRAMALLI ,  Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL ,  Wooseok NAM ,  Juan MONTOJO ,  Tao LUO

IPC: H04L5/00 ,  H04W56/00 ,  H04W48/16

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive information indicating a timing configuration for candidate positions of a discovery reference signal (DRS) window, wherein the DRS window is within an unlicensed millimeter wave (mmW) band, and wherein the timing configuration provides for repetition of a synchronization signal block (SSB) within the DRS window based at least in part on a wraparound scheme; and scan for the SSB in accordance with the timing configuration. Numerous other aspects are provided.

公开(公告)号：US20210289559A1

公开(公告)日：2021-09-16

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: H04W74/08 ,  H04W74/00 ,  H04L27/26

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：US20210289455A1

公开(公告)日：2021-09-16

申请号：US17199100

申请日：2021-03-11

Applicant: QUALCOMM Incorporated

Inventor： Jing SUN ,  Xiaoxia ZHANG ,  Tao LUO ,  Juan MONTOJO ,  Arumugam CHENDAMARAI KANNAN

IPC: H04W56/00 ,  H04W16/28 ,  H04L1/00 ,  H04W74/08 ,  H04L5/00

Abstract: Certain aspects of the present disclosure provide techniques for synchronization signal block (SSB) patterns with gaps. A method that may be performed by a network entity (e.g., a BS) generally includes determining a synchronization signal block (SSB) pattern that identifies SSB positions for sweeping a set of SSB beams over multiple SSB bursts with gaps between at least some of the SSB positions, wherein the SSB pattern identifies a subset of the set of SSB beams to use per SSB burst. The method generally includes transmitting SSBs over the multiple SSB bursts in accordance with the pattern.

公开(公告)号：US20210266979A1

公开(公告)日：2021-08-26

申请号：US17249167

申请日：2021-02-22

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL ,  Xiaoxia ZHANG ,  Jing SUN ,  Srinivas YERRAMALLI ,  Zhifei FAN ,  Wooseok NAM ,  Tao LUO ,  Juan MONTOJO

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

Abstract: Wireless communications systems and methods related to random access signaling are provided. A user equipment (UE) may transmit to a base station (BS) in a frequency band, a random access signal including at least one of a length in time or a length in frequency that is based on a subcarrier spacing (SCS) in the frequency band. The BS may receive the random access signal and transmit a response to the random access signal.

公开(公告)号：US20210266214A1

公开(公告)日：2021-08-26

申请号：US17172982

申请日：2021-02-10

Applicant: QUALCOMM Incorporated

Inventor： Jing SUN ,  Xiaoxia ZHANG ,  Tao LUO

IPC: H04L27/26 ,  H04W56/00 ,  H04W24/10 ,  H04W74/08

Abstract: A base station may transmit a control channel transmission during a configured discovery reference signal window on a shared spectrum. A user equipment (UE) may detect the control channel transmission from the base station during the configured discovery reference signal window on the shared spectrum. The UE may determine, in response to detecting the control channel transmission, expected synchronization signal block (SSB) positions within a maximum SSB burst length starting from the control channel transmission during the discovery reference signal window. The base station may transmit SSBs at the expected SSB positions within the maximum SSB burst length starting from the control channel transmission during the discovery reference signal window. The UE may measure SSBs at the expected SSB positions. The UE may conserve power by stopping measurements or entering a sleep mode after the expected SSB positions.

公开(公告)号：US20210250953A1

公开(公告)日：2021-08-12

申请号：US17248124

申请日：2021-01-11

Applicant: QUALCOMM Incorporated

Inventor： Jing SUN ,  Xiaoxia ZHANG ,  Stefan BRUECK ,  Christian SGRAJA

IPC: H04W72/04 ,  H04W24/08

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configurations for a plurality of search space sets for a control resource set (CORESET), the plurality of search space sets including one or more of a first type of search space set configured with multiple frequency domain monitoring locations or a second type of search space set configured without multiple frequency domain monitoring locations. The UE may receive a physical downlink control channel communication based at least in part on monitoring the plurality of search space sets according to a determination that the CORESET is associated with search space sets of a same type. Numerous other aspects are described.

公开(公告)号：US20210243620A1

公开(公告)日：2021-08-05

申请号：US17301917

申请日：2021-04-19

Applicant: QUALCOMM Incorporated

Inventor： Jing SUN ,  Taesang Yoo ,  Xiaoxia Zhang

IPC: H04W24/02 ,  H04L5/00 ,  H04L27/26 ,  H04J13/14 ,  H04L27/00 ,  H04J11/00 ,  H04J13/00 ,  H04W40/24 ,  H04W74/00

Abstract: A base station may determine a root for a sequence to be included in a signal to a UE. The base station may generate a generalized Chu sequence based on the root and scramble the generalized Chu sequence using a pseudorandom sequence that is common to a plurality of base stations. The base station may transmit the scrambled generalized Chu sequence to indicate the beginning of a downlink transmission. The UE may receive this scrambled generalized Chu sequence and determine if a beginning of a downlink transmission from a serving base station based on the received generalized Chu sequence and an expected generalized Chu sequence.

公开(公告)号：US20210235454A1

公开(公告)日：2021-07-29

申请号：US17115465

申请日：2020-12-08

Applicant: QUALCOMM Incorporated

Inventor： Sungwoo PARK ,  Mostafa KHOSHNEVISAN ,  Tao LUO ,  Jing SUN ,  Xiaoxia ZHANG ,  Arumugam CHENDAMARAI KANNAN ,  Wooseok NAM

IPC: H04W72/04 ,  H04L1/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, configuration information including multiple transmission configuration indication (TCI) states associated with a control resource set (CORESET). The UE may receive, from the base station, a physical downlink control channel (PDCCH) in a region associated with the CORESET, wherein the PDCCH includes at least one control channel element (CCE). The UE may perform blind decoding for multiple configured PDCCH candidates based at least in part on a resource element group (REG) bundle included in the at least one CCE, wherein the multiple configured PDCCH candidates are associated with one or more of the multiple TC states associated with the CORESET. Accordingly, the UE may identify the PDCCH transmitted by the base station based at least in part on the blind decoding.

公开(公告)号：US20210226734A1

公开(公告)日：2021-07-22

申请号：US16746415

申请日：2020-01-17

Applicant: QUALCOMM Incorporated

Inventor： Seyed Ali Akbar FAKOORIAN ,  Jing SUN ,  Xiaoxia ZHANG ,  Chih-Hao LIU ,  Srinivas YERRAMALLI

IPC: H04L1/18 ,  H04W72/04 ,  H04W72/14

Abstract: A method, an apparatus, a base station, and a user equipment (UE) for wireless communication are provided to reduce the retransmission latency for URLLC communications. Upon receiving a downlink data transmission, a UE waits until it completes decoding of the received downlink data transmission before it can send an ACK/NAK report on the decoded downlink data transmission. In case of a decoding failure, the base station cannot start retransmission until the UE finishes the decoding of the downlink data transmission and sends the ACK/NAK report and until the base station finishes decoding of an NAK in the ACK/NAK report. This considerable retransmission latency may not meet stringent latency requirements of some URLLC applications. A two-stage ACK/NAK reporting is disclosed to reduce the retransmission latency where the UE sends an early ACK/NAK report upon partially completing the decoding of the downlink data transmission.

公开(公告)号：US20210218437A1

公开(公告)日：2021-07-15

申请号：US17248169

申请日：2021-01-12

Applicant: QUALCOMM Incorporated

Inventor： Mostafa KHOSHNEVISAN ,  Xiaoxia ZHANG ,  Jing SUN

IPC: H04B1/713 ,  H04W72/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a first set of repetitions of a physical uplink shared channel (PUSCH) communication using a plurality of sets of values for a set of transmission parameters on a first set of frequencies using frequency hopping; and transmit a second set of repetitions of the PUSCH communication using the plurality of sets of values for the set of transmission parameters on a second set of frequencies using frequency hopping. Numerous other aspects are provided.