公开(公告)号：WO2022061635A1

公开(公告)日：2022-03-31

申请号：PCT/CN2020/117353

申请日：2020-09-24

Applicant: APPLE INC. ,  YAO, Chunhai

Inventor： YE, Chunxuan ,  ZHANG, Dawei ,  HU, Haijing ,  SUN, Haitong ,  HE, Hong ,  NIU, Huaning ,  OTERI, Oghenekome ,  FAKOORIAN, Seyed Ali Akbar ,  YE, Sigen ,  ZENG, Wei ,  YANG, Weidong ,  ZHANG, Yushu

IPC: H04W74/04 ,  H04W72/12 ,  H04L5/00

Abstract: Various techniques are presented to improve channel estimation in a wireless system, comprising: transmitting an indication of a physical downlink channel configuration, the physical downlink channel transmission including a demodulation reference signal (DMRS); receiving an indication that the wireless device supports bundling DMRS signals across multiple slots; transmitting, a DMRS configuration, the DMRS configuration including a channel estimation bundle window, the channel estimation bundle window indicating that channel estimation may be performed across multiple slots; transmitting a set of DMRS signals in the channel estimation bundle window, wherein a first DMRS signal of the set of DMRS signals is transmitted in a first slot, and wherein a second DMRS signal of the set of DMRS signals is transmitted in a second slot, and wherein the first DMRS signal and the second DMRS signal are configured for use by the wireless device to estimate a radio channel.

公开(公告)号：WO2022027655A1

公开(公告)日：2022-02-10

申请号：PCT/CN2020/107967

申请日：2020-08-07

Applicant: APPLE INC. ,  YAO, Chunhai

Inventor： YE, Chunxuan ,  ZHANG, Dawei ,  HU, Haijing ,  SUN, Haitong ,  HE, Hong ,  OTERI, Oghenekome ,  VANGALA, Sarma V. ,  YE, Sigen ,  ZENG, Wei ,  YANG, Weidong ,  ZHANG, Yushu

IPC: H04W56/00

Abstract: A user equipment (UE) comprising a processor configured to perform the operations that determines an uplink (UL) slot is described. In exemplary embodiments, the UE receives, from a base station, a scaling factor through a first Radio Resource Control (RRC) signal. The UE may further determines an offset through a second RRC signal. In addition, the UE may receive from the base station, downlink control information (DCI) that includes an indication of an initial time gap. Furthermore, the UE may calculate a new time gap by at least applying the scaling factor to the initial time gap and determine a slot of uplink transmission based on at least the new time gap and the offset.

公开(公告)号：WO2022027457A1

公开(公告)日：2022-02-10

申请号：PCT/CN2020/107455

申请日：2020-08-06

Applicant: APPLE INC. ,  YAO, Chunhai

Inventor： YE, Chunxuan ,  ZHANG, Dawei ,  HU, Haijing ,  SUN, Haitong ,  HE, Hong ,  TANG, Jia ,  OTERI, Oghenekome ,  YE, Sigen ,  ZENG, Wei ,  YANG, Weidong ,  ZHANG, Yushu ,  WU, Zhibin

IPC: H04W72/04 ,  H04W74/08

Abstract: Systems, methods and circuitries are provided for performing UE autonomous selection in a vehicle-to-anything (V2X) communication environment, that includes one or more processors configured to schedule resources for discontinuous periodic transmission having a scheduled discontinuous time period in which scheduled resources are not transmitted. The one or more processors are further configured to perform a monitoring operation at the scheduled discontinuous time period, the monitoring operation comprising a monitoring for a collision of scheduled resources of the evaluating UE with scheduled resources of a competing UE, and selectively perform a corrective action when a collision of scheduled resources of the evaluating UE with scheduled resources of the competing UE is detected during the monitoring operation.

公开(公告)号：WO2022027452A1

公开(公告)日：2022-02-10

申请号：PCT/CN2020/107449

申请日：2020-08-06

Applicant: APPLE INC. ,  YAO, Chunhai

Inventor： YE, Chunxuan ,  ZHANG, Dawei ,  HU, Haijing ,  SUN, Haitong ,  HE, Hong ,  TANG, Jia ,  OTERI, Oghenekome ,  YE, Sigen ,  ZENG, Wei ,  YANG, Weidong ,  ZHANG, Yushu ,  WU, Zhibin

IPC: H04W4/46

Abstract: An evaluating user equipment (UE) includes memory and one or more processors communicatively coupled to the memory. The one or more processor are configured to schedule periodic resources with one or more configured feedback-based collision detection parameters, and perform a periodic transmission to one or more receiving UEs. The one or more processors are also configured to collect negative acknowledgement (NACK) statistics for the periodic transmission according to the configured feedback-based collision detection parameters, and selectively perform corrective action based on the collected NACK statistics and at least one of the configured feedback-based collision detection parameters.

公开(公告)号：WO2022027388A1

公开(公告)日：2022-02-10

申请号：PCT/CN2020/107243

申请日：2020-08-05

Applicant: APPLE INC. ,  YAO, Chunhai

Inventor： SUN, Haitong ,  YAO, Chunhai ,  YE, Chunxuan ,  ZHANG, Dawei ,  HE, Hong ,  CUI, Jie ,  OTERI, Oghenekome ,  YE, Sigen ,  ZENG, Wei ,  YANG, Weidong ,  TANG, Yang ,  ZHANG, Yushu

IPC: H04W72/12

Abstract: A user equipment (UE) may transmit hybrid automatic repeat request (HARQ) feedback when part of a group of UEs. The UE receives a radio network temporary identifier (RNTI) associated with a group of UEs that includes the UE. The UE monitors for a signal from one of a cell on which the UE is currently camped or a cell to which the UE is currently connected that is scrambled by the RNTI and includes control information. The UE transmits HARQ feedback to the one of the currently camped cell or currently connected cell, the HARQ feedback associated with the signal and, when the signal is received, performs an operation in response to the control information.

公开(公告)号：WO2022027387A1

公开(公告)日：2022-02-10

申请号：PCT/CN2020/107242

申请日：2020-08-05

Applicant: APPLE INC. ,  YAO, Chunhai

Inventor： YE, Chunxuan ,  ZHANG, Dawei ,  ZENG, Wei ,  SUN, Haitong ,  YE, Sigen ,  YANG, Weidong ,  OTERI, Oghenekome ,  HE, Hong ,  ZHANG, Yushu ,  VANGALA, Sarma ,  HU, Haijing

IPC: H04W74/08

Abstract: Methods and systems to enhance NR RACH procedure to accommodate non-terrestrial networks (NTN) are disclosed. The length of the RAR window may be extended. In one aspect, a gNB of the NTN may perform blind retransmissions of the RAR message scheduled by DCI within the RAR window to user equipment to improve transmission reliability of the RAR message for NTN. The number of blind retransmission and the transmission pattern may depend on the PRACH reception condition, an uplink channel condition, or may be pre-configured. In one aspect, the gNB may extend the K1 value and K2 value that determine the delays between uplink and downlink transmissions to align the time domain duplex (TDD) uplink-downlink configuration due to the long propagation delays associated with the NTN. In one aspect, the gNB may broadcast or multicast RAR window size extension values to the UEs based on the orbital altitude of the satellites.

公开(公告)号：WO2022027362A1

公开(公告)日：2022-02-10

申请号：PCT/CN2020/107205

申请日：2020-08-05

Applicant: APPLE INC. ,  ZHANG, Yushu

Inventor： YAO, Chunhai ,  YE, Chunxuan ,  ZHANG, Dawei ,  SUN, Haitong ,  HE, Hong ,  CUI, Jie ,  OTERI, Oghenekome ,  YE, Sigen ,  ZENG, Wei ,  YANG, Weidong

IPC: H04L1/08 ,  H04W72/04

Abstract: Methods and systems for performing Physical Uplink Shared Channel (PUSCH) transmissions include receiving, by a user equipment (UE) from a base station, an indicator of a plurality of precoders corresponding to M Physical Uplink Shared Channel (PUSCH) repetitions, wherein M is an integer. A plurality of precoders corresponding to two or more of the M PUSCH repetitions is indicated. The UE configures the plurality of precoders based on the indicator and transmits one or more of the M Physical Uplink Shared Channel (PUSCH) repetitions corresponding to one or more of the plurality of precoders. The indicator can be provided in higher layer signaling. One or more transmission rank indicator (TRIs) and transmission precoder matrix indicators (TPMIs) for the M PUSCH repetitions can be provided. The indicator can be provided in a scheduling downlink control indicator (DCI) communication. The indicator can also be provided within N sounding reference signal (SRS) resource indicator(s) (SRIs) of the scheduling DCI.

公开(公告)号：WO2022027348A1

公开(公告)日：2022-02-10

申请号：PCT/CN2020/107188

申请日：2020-08-05

Applicant: APPLE INC. ,  HE, Hong

Inventor： YAO, Chunhai ,  YE, Chunxuan ,  ZHANG, Dawei ,  SUN, Haitong ,  CUI, Jie ,  OTERI, Oghenekome ,  YE, Sigen ,  ZENG, Wei ,  YANG, Weidong ,  TANG, Yang ,  ZHANG, Yushu

IPC: H04W72/04

Abstract: Methods, circuitries, and systems are disclosed for configuring multiple PDSCH/PUSCH transmission with repetition of each transmission. In one example, a method includes receiving, from a base station, control information that indicates i) time domain resources for communication of at least two physical downlink shared channel (PDSCH) or at least two physical uplink shared channel (PUSCH) transmissions and ii) at least one repetition number indicating a number of times each of the at least two PDSCH/PUSCH transmissions is repeated. The method includes configuring operation to receive the at least two PDSCH transmissions or to transmit the at least two PUSCH transmissions based on the time domain resources and repetition number.

公开(公告)号：WO2022027316A1

公开(公告)日：2022-02-10

申请号：PCT/CN2020/107109

申请日：2020-08-05

Applicant: APPLE INC. ,  YAO, Chunhai

Inventor： SUN, Haitong ,  YAO, Chunhai ,  YE, Chunxuan ,  ZHANG, Dawei ,  HE, Hong ,  CUI, Jie ,  OTERI, Oghenekome ,  YE, Sigen ,  ZENG, Wei ,  YANG, Weidong ,  TANG, Yang ,  ZHANG, Yushu

IPC: H04W72/04

Abstract: A cell performs simultaneous scheduling for a group of user equipment (UE). The cell associates a radio network temporary identifier (RNTI) with a group of user equipment (UEs), transmits a signal to the group of UEs, the signal scrambled by the RNTI and including control information and performs an operation indicated in the control information.

公开(公告)号：WO2022027308A1

公开(公告)日：2022-02-10

申请号：PCT/CN2020/107087

申请日：2020-08-05

Applicant: APPLE INC. ,  ZHANG, Yushu

Inventor： YANG, Weidong ,  BHARADWAJ, Arjun ,  ZHANG, Dawei ,  SUN, Haitong ,  YAO, Chunhai ,  HE, Hong ,  YE, Chunxuan ,  OTERI, Oghenekome ,  YE, Sigen ,  ZENG, Wei ,  ROSSBACH, Ralf

IPC: H04W24/04 ,  H04W72/04

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 actual footprint parameters/values for the UE's uplink data transmissions may be received by the base station as part of CG uplink control information (CG-UCI) received from the UE. The base station may receive the CG-UCI over resources configured according to additional parameter values transmitted to the UE via the prior signaling from the base station. The base station may further receive uplink data on resources configured according to the actual footprint values.