公开(公告)号：US20220311499A1

公开(公告)日：2022-09-29

申请号：US17593562

申请日：2020-05-15

Applicant: APPLE INC.

Inventor： Yushu Zhang ,  Chunhai Yao ,  Chunxuan Ye ,  Dawei Zhang ,  Fangli Xu ,  Haijing Hu ,  Haitong Sun ,  Hong He ,  Wei Zeng ,  Weidong Yang ,  Yeong-Sun Hwang ,  Yuchul Kim ,  Yuqin Chen

IPC: H04B7/06 ,  H04B7/08 ,  H04L5/00

Abstract: Systems and methods for control signaling for beam searching latency reduction are disclosed herein. A g Node B (gNB) may determine that a first Synchronization Signal Block (SSB) and a second SSB are to be spatially correlated and may select a first transmit (Tx) beam to transmit the first SSB and a second Tx beam to transmit the second SSB accordingly. The gNB may also transmit a correlation message including spatial correlation information to help a UE determine the spatial correlation. The UE may measure the first SSB on a first subset of a plurality of receive (Rx) beams and measure the second. SSB on a second subset of the plurality of Rx beams, and select an Rx beam for one or both. In some embodiments, channel state information reference signals (CSI-RS) that are quasi co-located (QCLed) with a Oven SSB may be measured in place of the SSB.

公开(公告)号：US20220304042A1

公开(公告)日：2022-09-22

申请号：US17442117

申请日：2020-08-05

Applicant: Apple Inc.

Inventor： Weidong Yang ,  Arjun Bharadwaj ,  Yushu Zhang ,  Dawei Zhang ,  Haitong Sun ,  Chunhai Yao ,  Hong He ,  Chunxuan Ye ,  Oghenekome Oteri ,  Sigen Ye ,  Wei Zeng ,  Ralf Rossbach

IPC: H04W72/14 ,  H04W72/12

Abstract: Improved configured grants (CGs) may include the designation of a footprint corresponding to uplink transmission of a UE, with the footprint at least partially defined by the occupied transmission time, occupied transmission frequency, and transmission power. The footprint may be adjustable and/or selectable by the UE according to the current traffic needs of the UE and within limits set for the footprint via prior signaling from the base station to the UE. The UE may indicate the actual footprint parameters/values for the UE's uplink data transmissions by transmitting CG uplink control information (CG-UCI) inclusive of the actual footprint values to the base station. The UE may transmit the CG-UCI over resources configured according to additional parameter values received via the prior signaling from the base station. The UE may further transmit uplink data on resources configured according to the actual footprint values.

公开(公告)号：US20220303998A1

公开(公告)日：2022-09-22

申请号：US17439024

申请日：2020-10-12

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Yushu Zhang ,  Huaning Niu ,  Hong He ,  Wei Zeng ,  Chunxuan Ye ,  Oghenekome Oteri ,  Sigen Ye ,  Dawei Zhang ,  Chunhai Yao ,  Jie Cui ,  Yang Tang

IPC: H04W72/08 ,  H04W72/04 ,  H04L5/00

Abstract: A cellular base station (BS) which transmits more flexible downlink control information (DCI) to the UE, and a UE capable of receiving and processing a received DCI message. The DCI message may have a DCI format of 0_1 or 0_2 and further may comprise an UL-SCH set to 0, a CSI request field of all 0s and an SRS request field having a nonzero value. The DCI message may indicate to the UE that the UE should: 1) transmit an aperiodic SRS corresponding to SRS request; and 2) that the UE should not transmit on the PUSCH. The DCI may include existing fields that specify either a slot offset or beam information useable when transmitting the aperiodic SRS. The base station may also generate a DCI message with an SRS trigger that is targeted to a plurality of UEs in a group, or a plurality of groups of UEs, for greater efficiency.

公开(公告)号：US20220303086A1

公开(公告)日：2022-09-22

申请号：US17437571

申请日：2020-09-16

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Chunhai Yao ,  Chunxuan Ye ,  Dawei Zhang ,  Haitong Sun ,  Hong He ,  Huaning Niu ,  Oghenekome Oteri ,  Seyed Ali Akbar Fakoorian ,  Sigen Ye ,  Wei Zeng ,  Weidong Yang

IPC: H04L5/00 ,  H04W24/08 ,  H04W72/04

Abstract: This disclosure relates to techniques for a user equipment device (UE) performing a quasi-colocation (QCL) update in a wireless communication system. The UE may receive an indication to change a spatial relationship for transmission/reception. The UE may receive aperiodic reference signals for use in beam tracking according to the new spatial relationship. The UE may also receive provide aperiodic reference signals for time, frequency, and/or phase tracking. Thus, the UE may change to the new spatial relationship and use the aperiodic reference signals to quickly complete initial tracking operations.

公开(公告)号：US20220302966A1

公开(公告)日：2022-09-22

申请号：US17442129

申请日：2020-08-05

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Yushu Zhang ,  Wei Zeng ,  Dawei Zhang ,  Weidong Yang ,  Sigen Ye ,  Jie Cui ,  Yang Tang ,  Chunhai Yao ,  Chunxuan Ye ,  Hong He ,  Oghenekome Oteri

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

Abstract: Embodiments are presented herein of apparatuses, systems, and methods for a user equipment device (UE) to establish a cellular connection with a base station. The UE may receive multiple input, multiple output (MIMO) uplink configuration information from the base station. The MIMO configuration information may indicate a plurality of sounding reference signal (SRS) resources. The UE may receive downlink control information (DCI) from the base station, which may specify a plurality of MIMO parameters. The UE may perform uplink MIMO communication with the base station according to the MIMO configuration and the plurality of MIMO parameters.

公开(公告)号：US11451361B2

公开(公告)日：2022-09-20

申请号：US17023342

申请日：2020-09-16

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Yakun Sun ,  Fangli Xu ,  Yuqin Chen ,  Dawei Zhang ,  Haijing Hu ,  Chunhai Yao ,  Yuchul Kim ,  Hong He ,  Wei Zeng ,  Haitong Sun

IPC: H04L5/00 ,  H04B7/06 ,  H04W24/10

Abstract: A wireless user equipment (UE) may employ any of various mechanisms for reporting signal quality measurements to a wireless network. The UE may impose a time delay between measurement and reporting, based on a delay parameter K. The UE may average measurements obtained at different measurement instances. The UE may employ any of various schemes for prioritizing transmission of one type of report over another, when temporal collisions occur between different types of report. The UE may employ a differential report that includes a state for indicating that a beam is not workable. The UE may employ a beam index that includes a state for indicating an invalid beam. A base station may receive a signal quality report and determine workability of a beam, e.g., by triggering a report of channel state information.

公开(公告)号：US20220279450A1

公开(公告)日：2022-09-01

申请号：US16977442

申请日：2019-09-29

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Chunhai Yao ,  Dawei Zhang ,  Fangli Xu ,  Haijing Hu ,  Haitong Sun ,  Hong He ,  Wei Zeng ,  Yakun Sun ,  Yuchul Kim ,  Yuqin Chen

IPC: H04W52/08 ,  H04W52/14 ,  H04W52/36 ,  H04W52/24

Abstract: Embodiments are presented herein of apparatuses, systems, and methods for a user equipment device (UE) to perform power control for uplink (UL) reference signals (RS). A UE may determine spatial configuration for UL RS based on another communication. A UE may determine an updated pathloss within a reduced implementation following an update of downlink (DL) RS. A UE may reset a power control factor in response to receiving an update.

公开(公告)号：US20220271886A1

公开(公告)日：2022-08-25

申请号：US17438586

申请日：2021-01-13

Applicant: Apple Inc.

Inventor： Hong He ,  Dawei Zhang ,  Wei Zeng ,  Haitong Sun ,  Chunhai Yao ,  Yushu Zhang ,  Seyed Ali Akbar Fakoorian ,  Oghenekome Oteri ,  Weidong Yang ,  Sigen Ye

IPC: H04L5/00

Abstract: Transmission of uplink demodulation reference signals (DMRSs) may be dynamically adapted for mobile devices. Downlink control information (DCI) that schedules uplink transmission(s) of the mobile device may include an information element (IE) corresponding to a DMRS to be transmitted by the UE during the uplink transmission(s). The IE enables the mobile device to determine when to transmit DMRSs during the scheduled uplink transmission(s). The mobile device may identify a corresponding DMRS pattern indicated by the IE, with the DMRS pattern defining how many DMRSs to transmit during the uplink transmission(s), how many DMRSs to transmit in a given time interval (TTI) bundle in the uplink transmission(s), how many DMRSs to transmit in a given repetition of the TTI bundle, and/or where the relative position(s) of the DMRSs are within the given repetition and the given TTI bundle. The DMRS patterns may be configured for the mobile device via higher layer signaling or may be hard-coded.

公开(公告)号：US11356151B2

公开(公告)日：2022-06-07

申请号：US17267603

申请日：2020-02-12

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Yushu Zhang ,  Wei Zeng ,  Dawei Zhang ,  Yuchul Kim ,  Hong He ,  Weidong Yang ,  Chunhai Yao ,  Chunxuan Ye ,  Oghenekome Oteri ,  Ismael Gutierrez Gonzalez ,  Ghaith N Hattab ,  Jie Cui ,  Yang Tang ,  Haijing Hu ,  Fangli Xu ,  Zhibin Wu ,  Yuqin Chen ,  Yeong-Sun Hwang

IPC: H04W92/18 ,  H04B7/0413 ,  H04L1/18 ,  H04L5/00 ,  H04W72/04

Abstract: Apparatuses, systems, and methods for multi-TRP by a UE, including out of order delivery of PDSCH, PUSCH, and/or DL ACK/NACK. The UE may receive, from a base station, a configuration that may include multiple control resource set (CORESET) poos and each CORESET pool may be associated with an index value. The UE may determine that at least two DCIs of the multiple DCIs end at a common symbol and determine, based on one or more predetermined rules, when the UE may be scheduled to receive PDSCHs, transmit PUSCHs, and/or transmit ACK/NACKs from CORESETs associated with the at least two DCIs.

公开(公告)号：US20210368368A1

公开(公告)日：2021-11-25

申请号：US17059187

申请日：2019-11-28

Applicant: Apple Inc.

Inventor： Hong He ,  Pengkai Zhao ,  Wei Zeng ,  Dawei Zhang ,  Haitong Sun ,  Yuchul Kim ,  Chunhai Yao ,  Yushu Zhang ,  Wei Zhang ,  Weidong Yang ,  Chunxuan Ye

IPC: H04W24/08 ,  H04L5/00

Abstract: A device may wirelessly communicate with a number of different cells used in a carrier aggregation. The device may monitor physical downlink control channels (PDCCHs) on the different cells, dynamically switching between a dormant monitoring state (DS) and an active monitoring state (AS). In the DS, the UE may not monitor any PDCCH candidates on the active secondary SCells corresponding to the DS, or it may monitor PDCCH candidates in the search space (SS) set with the largest monitoring periodicity among the multiple SS sets on the active bandwidth part (BWP). In the AS, the UE may monitor a set of PDCCH candidates in physical resources configured by higher layers on the BWPs. Switching from one monitoring state to another may be facilitated through the use of a new downlink control information (DCI) format without data scheduling, a modified existing DCI format with data scheduling, and/or use of a DS timer.