公开(公告)号：US20220167321A1

公开(公告)日：2022-05-26

申请号：US17440932

申请日：2020-03-19

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Alexei Davydov ,  Bishwarup Mondal ,  Guotong Wang ,  Avik Sengupta

IPC: H04W72/04

Abstract: Wireless communication systems can include multiple Transmission and Reception Points (TRPs). Systems, devices, and techniques for control signaling of Precoding Resource block Group (PRG) size configuration for multi-TRP operations are described. A described technique includes determining, by a User Equipment (UE), a PRG size based on a downlink control information (DCI) message that provides scheduling information for a physical ?downlink shared channel (PDSCH); receiving, by the UE, a group of PDSCH transmissions from multiple TRPs that are transmitted in accordance with the DCI message; and decoding, by the UE, one or more of the PDSCH transmissions based on the PRG size.

公开(公告)号：US11343876B2

公开(公告)日：2022-05-24

申请号：US16646311

申请日：2018-09-10

Applicant: Apple Inc.

Inventor： Guotong Wang ,  Yushu Zhang ,  Alexei Davydov

IPC: H04W88/06 ,  H04W76/30 ,  H04W76/27 ,  H04B7/06 ,  H04B7/08 ,  H04L5/00 ,  H04W56/00 ,  H04W74/08

Abstract: Provided herein are method and apparatus for beam recovery. An embodiment provides an apparatus for a user equipment (UE) including a radio frequency (RF) interface; and processing circuitry configured to: determine, in response to a beam failure, a channel for transmission of a beam failure recovery request as one of: a Physical Uplink Control Channel (PUCCH), a non-contention based Physical Random Access Channel (PRACH), and a contention based Physical Random Access Channel (PRACH); and encode the beam failure recovery request for transmission to an access node via the determined channel using the RF interface. At least some embodiments allow for transmission of a beam failure recovery request for beam recovery, allow for beam failure detection or new Tx beam identification, and allow for determining whether to configure a scheduling delay between a PDCCH and a PDSCH.

公开(公告)号：US11317430B2

公开(公告)日：2022-04-26

申请号：US16886256

申请日：2020-05-28

Applicant: Apple Inc.

Inventor： Ajit Nimbalker ,  Alexei Davydov ,  Gang Xiong ,  Yushu Zhang

IPC: H04W72/12 ,  H04W72/14 ,  H04L5/00 ,  H04L1/18 ,  H04L27/26

Abstract: Embodiments of a User Equipment (UE), Next Generation Node-B (gNB) and methods of communication are generally described herein. The UE may receive an information element (IE) that includes: a higher layer parameter that indicates a plurality of modulation and coding scheme (MCS) thresholds; and another higher layer parameter that includes a plurality of resource block (RB) thresholds. The UE may determine a time density of phase tracking reference signal (PT-RS) to be transmitted by the UE based at least partly on a comparison between a MCS and the plurality of MCS thresholds. The UE may determine a frequency density of the PT-RS based at least partly on a comparison between a scheduled bandwidth and the plurality of RB thresholds. The UE may encode the PT-RS for transmission in accordance with the determined time density and the determined frequency density.

公开(公告)号：US11316721B2

公开(公告)日：2022-04-26

申请号：US16976624

申请日：2018-07-26

Applicant: Apple Inc.

Inventor： Gregory Morozov ,  Dae Won Lee ,  Alexei Davydov ,  Seung Hee Han ,  Yongjun Kwak

IPC: H04W56/00 ,  H04L27/26 ,  H04W76/11 ,  H04J13/00 ,  H04L1/00 ,  H04L5/00 ,  H04L5/10

Abstract: A reference signal sequence to modulate the demodulation reference signal for the Physical Broadcast Channel in New Radio standard is disclosed. Formulas are proposed for calculating the initialization value for the RS sequence generator so as to accord with the characteristics of New Radio.

公开(公告)号：US20220124819A1

公开(公告)日：2022-04-21

申请号：US17428002

申请日：2020-02-05

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Gang Xiong ,  Guotong Wang ,  Alexei Davydov

IPC: H04W74/08

Abstract: Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for use in a wireless network for beam failure recovery (BFR). For example, some embodiments are directed to a user equipment (UE). The UE includes radio front end circuitry and processor circuitry coupled to the radio front end circuitry. The processor circuitry can be configured to receive, using the radio front end circuitry, one or more reference signals. The processor circuitry can be further configured to, in response to determining that a beam failure occurred for the one or more reference signals, determine a contention-free (CF) physical random access channel (PRACH) resource for a beam failure recovery (BFR) request. The processor circuitry can be further configured to transmit, using the radio front circuitry, the BFR request using the determined CF PRACH resource.

公开(公告)号：US20220109590A1

公开(公告)日：2022-04-07

申请号：US17502608

申请日：2021-10-15

Applicant: Apple Inc.

Inventor： Hong He ,  Gang Xiong ,  Seunghee Han ,  Hwan-Joon Kwon ,  Alexei Davydov

IPC: H04L25/02 ,  H04W76/27 ,  H04L1/18 ,  H04L5/00 ,  H04L5/14 ,  H04L27/26 ,  H04W4/06 ,  H04W72/04

Abstract: An apparatus can receive or transmit parameters for a sounding reference signal (SRS) transmission configuration as an uplink (UL)/downlink (DL) configuration of a serving cell. A time division duplex (TDD) operation with a plurality of component carriers (CCs) can be enabled/generated based on the parameters and at least one component carriers being reserved for the UL transmission or having a higher priority than a physical channel transmission such as a physical uplink shared channel (PUSCH) transmission or a physical uplink control channel (PUCCH) transmission.

公开(公告)号：US11272530B2

公开(公告)日：2022-03-08

申请号：US16933700

申请日：2020-07-20

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Sameer Pawar

IPC: H04W72/12 ,  H04B7/0413 ,  H04L1/00 ,  H04L5/00

Abstract: Embodiments of a User Equipment (UE) and methods of communication are generally described herein. If a higher layer parameter altMCS-Table is configured, and a physical downlink shared channel (PDSCH) is assigned by a downlink control information (DCI) format 1, 1B, 1D, 2, 2A, 2B, 2C, or 2D, the UE may, for some subframe/frame configurations, determine a number of physical resource blocks (PRBs) for the transport block as a maximum of: 1; and a floor function applied to a product of a total number of allocated PRBs, a parameter dependent on a special subframe configuration, and a scaling parameter. For other subframe/frame configurations, the UE may determine the number of PRBs for the transport block as a maximum of: 1; and the floor function applied to a product of the total number of allocated PRBs and the scaling parameter.

公开(公告)号：US11265091B2

公开(公告)日：2022-03-01

申请号：US16734564

申请日：2020-01-06

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Seunghee Han ,  Debdeep Chatterjee ,  Gregory Morozov ,  Dae Won Lee ,  Yongjun Kwak

IPC: H04W72/04 ,  H04B7/08 ,  H04B17/382 ,  H04B7/06 ,  H04B17/318 ,  H04W24/08 ,  H04L5/00 ,  H04L25/02 ,  H04B17/24 ,  H04W24/10

Abstract: Embodiments of the present disclosure describe apparatuses, methods and machine-readable storage medium for Reference Signal Received Power (RSRP) measurement and allocation of Downlink (DL) transmission resources. A user equipment (UE) may detect a first Synchronization Signal/Physical Broadcast Channel (SS/PBCH) block, and determine a subcarrier spacing (SCS) thereof. Mapping the first SS/PBCH block to OFDM symbols may be dependent on the SCS and a first SS/PBCH block index of the first SS/PBCH block. The UE may determine, based on the first SS/PBCH block and the SCS, a number of symbols of the slot or the slot pair for a CORESET for reception of a DL control channel associated with Remaining Minimum System Information (RMSI). The UE may decode the DL control channel in the CORESET. The DL control channel may be configured to indicate a DL data channel carrying the RMSI associated with the first SS/PBCH block.

公开(公告)号：US11233529B2

公开(公告)日：2022-01-25

申请号：US16488309

申请日：2018-03-22

Applicant: Apple Inc.

Inventor： Dmitry Dikarev ,  Grigory Ermolaev ,  Ajit Nimbalker ,  Alexei Davydov ,  Ashwin Chandrasekaran ,  Sathishkumar Chellakuhigounder Kulandaivel

IPC: H03M13/00 ,  H03M13/13 ,  H03M13/09 ,  H03M13/27

Abstract: One example aspect of the techniques discussed herein is a User Equipment (UE) comprising processing circuitry configured to determine one or more thresholds for code block segmentation, wherein the one or more thresholds for code block segmentation comprise one or more of a payload threshold (Kseg) or a code rate threshold (Rseg); determine to perform code block segmentation based on the one or more thresholds and at least one of a current payload (K) of an information block or a current code rate (R) for the information block; segment the information block into a plurality of segments; and encode each segment of the plurality of segments via a polar encoder with a code size (N).

公开(公告)号：US20210344431A1

公开(公告)日：2021-11-04

申请号：US17234665

申请日：2021-04-19

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Wook Bong Lee ,  Dae Won Lee ,  Seunghee Han ,  Alexei Davydov ,  Guotong Wang ,  Gregory Morozov

IPC: H04B17/327 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/08

Abstract: Provided herein are method and apparatus for perform radio link monitoring (RLM) based on a Reference signal (RS). An embodiment provides a user Equipment (UE) comprising circuitry configured to: decode a Reference Signal (RS) received from an access node; and determine beam quality for one or more beam pair links (BPLs) of the RS between the UE and the access node based on the decoded RS, wherein each of the BPLs comprises a transmit (Tx) beam of the access node and a receive (Rx) beam of the UE. Also provided is a procedure of RLM. At least some embodiments allow for beam recovery request for UE beam refinement, and allow for determining whether radio link failure (RLF) occurs.