公开(公告)号：US11601824B2

公开(公告)日：2023-03-07

申请号：US17259057

申请日：2019-08-07

Applicant: Apple Inc.

Inventor： Fatemeh Hamidi-Sepehr ,  Debdeep Chatterjee ,  Bishwarup Mondal ,  Sergey Panteleev ,  Toufiqul Islam ,  Yushu Zhang ,  Alexei Vladimirovich Davydov

IPC: H04W16/28 ,  H04W72/04 ,  H04W72/044

Abstract: User equipment (UE) includes processing circuitry coupled to memory. To configure the UE for multi-transmission reception point (TRP) reception, the processing circuitry is to decode radio resource control (RRC) signaling. The RRC signaling includes configuration information configuring a plurality of transmission configuration indication (TCI) states. A media access control (MAC) control element (CE) is decoded, where the MAC CE indicates multiple active TCI states of the configured plurality of TCI states. Multiple received beams are determined using the multiple active TCI states. Downlink information is decoded, where the downlink information originates from multiple TRPs and is received via the determined multiple receive beams associated with the multiple active TCI states.

公开(公告)号：US11515917B2

公开(公告)日：2022-11-29

申请号：US17417302

申请日：2020-01-18

Applicant: Apple Inc.

Inventor： Victor Sergeev ,  Alexei Davydov ,  Bishwarup Mondal ,  Gregory Morozov ,  Dmitry Dikarev

IPC: H04B7/06 ,  H04B7/0456

Abstract: An approach is described that includes receiving a CSI report, where the CSI report includes a channel quality indicator (CQI), a rank indicator (RI), and a precoding matrix indicator (PMI). The approach further includes constructing a precoding matrix based on a linear combination of a plurality of mutually orthogonal digital Fourier transformation (DFT) spatial beams, and determining a number of bits for the PMI of the precoding matrix. The approach also includes determining a space frequency matrix based, at least in part, on the number of bits for the PMI and the precoding matrix, and compressing the space frequency matrix. Finally, the approach includes determining a compressed PMI based, at least in part, on the space frequency matrix.

公开(公告)号：US11477676B2

公开(公告)日：2022-10-18

申请号：US17289013

申请日：2019-10-29

Applicant: Apple Inc.

Inventor： Bishwarup Mondal ,  Lopamudra Kundu ,  Seau S. Lim ,  Dae Won Lee

IPC: H04W24/08 ,  H04L5/00 ,  H04J11/00 ,  H04W76/18 ,  H04L1/20 ,  H04W74/08

Abstract: An apparatus of user equipment (UE) includes processing circuitry coup led to a memory, where to configure the UE for radio link monitoring (RLM) in a New Radio-Unlicensed (NR-U) network, the processing circuitry is to decode radio resource control (RRC) signaling from a base station. The RRC signaling includes configuration information to configure transmission occasions for a plurality of RLM reference signals (RLM-RSs). A primary synchronization signal (PSS) or a secondary synchronization signal (SSS) detection is performed to determine a number of RLM-RSs of the plurality of RLM-RSs that are successfully transmitted during the transmission occasions. Signal measurements are performed on the RLM-RSs that are successfully transmitted within an evaluation duration to determine a block error rate (BLER). The signal measurements are performed when the number is higher than a threshold number. An in-sync (IS) indicator or an out-of-sync (OOS) indicator are generated based on the signal measurements.

公开(公告)号：US20220150926A1

公开(公告)日：2022-05-12

申请号：US17441654

申请日：2020-05-01

Applicant: Apple Inc.

Inventor： Bishwarup Mondal ,  Gang Xiong ,  Yushu Zhang

IPC: H04W72/12 ,  H04W72/04 ,  H04W72/02 ,  H04L1/18

Abstract: Systems, devices, and techniques for physical uplink control channel (PUCCH) resource grouping in wireless communication systems that include transmission and reception points (TRPs) are described. A described technique performed by a user equipment (UE) includes receiving a PUCCH resource group configuration associated with TRPs, including a first TRP and a second TRP; and performing PUCCH transmissions to the TRPs in accordance with the PUCCH resource group configuration. The PUCCH resource group configuration can include a configuration for a first group of PUCCH resources associated with the first TRP and a second group of PUCCH resources associated with the second TRP.

公开(公告)号：US11165487B2

公开(公告)日：2021-11-02

申请号：US16084505

申请日：2016-07-01

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Wenting Chang ,  Yuan Zhu ,  Gang Xiong ,  Bishwarup Mondal

IPC: H04B7/08 ,  H04L5/00 ,  H04L25/02 ,  H04L27/26 ,  H04W74/08 ,  H04B7/26

Abstract: Technologies described herein provide mechanisms and formats to accomplish the beam switching. In one implementation, least one frame structure for both uplink (UL) and downlink (DL) beam switching is provided. The UL beam switching and refinement may rely on 5G Physical Random Access Channel (xPRACH) or 5G Sounding Reference Signal (xSRS). The DL beam switching and refinement may be done based on a beam refinement reference signal (BRRS). In some embodiments, to accomplish the both UL and DL beam switching and refinement in one subframe, the BRRS and xPRACH or xSRS may be located in one subframe.

公开(公告)号：US12224828B2

公开(公告)日：2025-02-11

申请号：US17430642

申请日：2020-02-06

Applicant: Apple Inc.

Inventor： Victor Sergeev ,  Alexei Davydov ,  Bishwarup Mondal ,  Dmitry Dikarev

IPC: H04B7/06

Abstract: Some embodiments of this disclosure include apparatuses and methods for reporting channel state information (CSI) for multiple spatial layers. The apparatuses and methods can include at least: determining, by a user equipment (UE), a precoding matrix indicator (PMI) for a set of precoding matrixes, wherein the PMI is determined based on a combination of digital Fourier transformation (DFT) spatial domain (SD) vectors, or based on DFT-based frequency domain (FD) compression; and transmitting, by the UE, the PMI to a next-generation NodeB (gNB).

公开(公告)号：US20250024270A1

公开(公告)日：2025-01-16

申请号：US18796052

申请日：2024-08-06

Applicant: Apple Inc.

Inventor： Fatemeh Hamidi-Sepehr ,  Debdeep Chatterjee ,  Bishwarup Mondal ,  Sergey Panteleev ,  Toufiqual Islam ,  Yushu Zhang ,  Alexei Vladimirovich Devydov

IPC: H04W16/28 ,  H04W72/044 ,  H04W72/23 ,  H04W76/20

Abstract: User equipment (UE) includes processing circuitry coupled to memory. To configure the UE for multi-transmission reception point (TRP) reception, the processing circuitry is to decode radio resource control (RRC) signaling. The RRC signaling includes configuration information configuring a plurality of transmission configuration indication (TCI) states. A media access control (MAC) control element (CE) is decoded, where the MAC CE indicates multiple active TCI states of the configured plurality of TCI states. Multiple received beams are determined using the multiple active TCI states. Downlink information is decoded, where the downlink information originates from multiple TRPs and is received via the determined multiple receive beams associated with the multiple active TCI states.

公开(公告)号：US12069722B2

公开(公告)日：2024-08-20

申请号：US17439244

申请日：2020-03-27

Applicant: Apple Inc.

Inventor： Yongjun Kwak ,  Bishwarup Mondal ,  Lopamudra Kundu ,  Jiwoo Kim

IPC: H04W74/08 ,  H04L1/00 ,  H04W16/14 ,  H04W74/0808

CPC classification number: H04W74/0808 ,  H04L1/0013 ,  H04W16/14

Abstract: Systems, devices, and techniques for wideband operations in unlicensed spectrum are described. A described technique receiving, by a user equipment (UE), a schedule for transmitting on a Physical uplink shared channel (PUSCH) over at least a portion of a plurality of listen-before-talk (LBT) subbands of a bandwidth part (BWP) in an unlicensed spectrum. The scheduled PUSCH bandwidth indicated by the schedule can be greater than a unit bandwidth of a LBT subband. The technique includes performing, by the UE, a LBT procedure on each scheduled LBT subband of the plurality of LBT subbands, each of the scheduled LBT subbands being associated with the scheduled PUSCH bandwidth. The technique includes performing, by the UE, a PUSCH transmission in accordance with the schedule that uses one or more of the scheduled LBT subbands that have passed the LBT procedure.

公开(公告)号：US12022463B2

公开(公告)日：2024-06-25

申请号：US17441654

申请日：2020-05-01

Applicant: Apple Inc.

Inventor： Bishwarup Mondal ,  Gang Xiong ,  Yushu Zhang

IPC: H04W72/1268 ,  H04L1/1812 ,  H04W72/02 ,  H04W72/044 ,  H04W72/23

CPC classification number: H04W72/1268 ,  H04L1/1812 ,  H04W72/02 ,  H04W72/044 ,  H04W72/23

Abstract: Systems, devices, and techniques for physical uplink control channel (PUCCH) resource grouping in wireless communication systems that include transmission and reception points (TRPs) are described. A described technique performed by a user equipment (UE) includes receiving a PUCCH resource group configuration associated with TRPs, including a first TRP and a second TRP; and performing PUCCH transmissions to the TRPs in accordance with the PUCCH resource group configuration. The PUCCH resource group configuration can include a configuration for a first group of PUCCH resources associated with the first TRP and a second group of PUCCH resources associated with the second TRP.

公开(公告)号：US20240179593A1

公开(公告)日：2024-05-30

申请号：US18503610

申请日：2023-11-07

Applicant: Apple Inc.

Inventor： Wenting Chang ,  Shirish Nagaraj ,  Bishwarup Mondal ,  Yuan Zhu ,  Yushu Zhang

IPC: H04W36/08 ,  H04W36/00 ,  H04W72/23

CPC classification number: H04W36/085 ,  H04W36/0064 ,  H04W72/23

Abstract: The first circuitry may be operable to establish a first UE Receive (Rx) beam as being for reception of data from a first eNB. The second circuitry may be operable to process a transmission including Downlink Control Information (DCI), wherein the DCI carries an eNB cell-switching indicator. The first circuitry may also be operable to establish a second UE Rx beam as being for reception of data from a second eNB based on the eNB cell-switching indicator.