公开(公告)号：US20230023632A1

公开(公告)日：2023-01-26

申请号：US17949983

申请日：2022-09-21

Applicant: Apple Inc.

Inventor： Carlos H. Aldana ,  Yongjun Kwak ,  Yingyang Li ,  Salvatore Talarico

IPC: H04W74/08 ,  H04W72/12

Abstract: Methods and apparatus are disclosed for a UE and its serving base station in 5G NR systems to signal channel scan or channel sensing to allow channel occupancy time (COT) sharing before transmissions. The COT sharing may be initiated by the base station or by the UE by asserting a CCA indication to enable channel sensing by a UE or base station, respectively. When the UE receives and decodes the asserted CCA indication during downlink transmission, the UE may perform channel sensing during a short interframe space (SIFS) between the downlink transmission and a scheduled uplink transmission. When the UE detects that the sensed RF energy across an intended transmission band is greater than an energy detect threshold, the UE may refrain from transmitting during the scheduled uplink transmission. Otherwise, or when the CCA indication is de-asserted, the UE may transmit during the scheduled uplink transmission without performing channel sensing.

公开(公告)号：US11490417B2

公开(公告)日：2022-11-01

申请号：US16924123

申请日：2020-07-08

Applicant: Apple Inc.

Inventor： Salvatore Talarico ,  Yongjun Kwak ,  Yingyang Li ,  Carlos H. Aldana

IPC: H04W74/08 ,  H04W16/14 ,  H04W72/12 ,  H04W88/08

Abstract: Apparatuses, systems, and methods are disclosed for frame based equipment (FBE) framework for new radio (NR) systems operating on the unlicensed spectrum. A processor for a base station performs a first clear channel assessment (CCA) using Category-1 (CAT-1) or CAT-2 listen-before-talk (LBT) on an unlicensed spectrum. The processor transmits first downlink (DL) data to one or more user equipments (UEs) within a fixed frame period (FFP) in accordance with a frame based equipment (FBE) framework for new radio (NR) on the unlicensed spectrum. The base station operates as an initiating device and the one or more UEs operate as responding devices. The processor performs a second CCA responsive to a gap of X orthogonal frequency-division multiplexing (OFDM) symbols between a DL burst and an uplink (UL) burst being greater than a threshold gap. The processor transmits second DL data within the FFP responsive to performing the second CCA.

公开(公告)号：US11469806B2

公开(公告)日：2022-10-11

申请号：US16133208

申请日：2018-09-17

Applicant: Apple Inc.

Inventor： Salvatore Talarico ,  Huaning Niu ,  Wenting Chang

IPC: H04B1/713 ,  H04B7/06 ,  H04L25/02 ,  H04L5/00 ,  H04W24/10 ,  H04L27/00 ,  H04W16/14 ,  H04W4/70 ,  H04W76/27 ,  H04W74/08

Abstract: Techniques described herein can facilitate Channel-State Information (CSI) measurement and feedback for communication in unlicensed spectrum or Sounding Reference Signal (SRS) transmission and/or channel-state estimation for communication in unlicensed spectrum. In an example, an apparatus is configured to be employed in a User Equipment (UE), and the apparatus comprises a Radio Frequency (RF) circuitry interface and processing circuitry configured to perform CSI measurement for communication in unlicensed spectrum. The apparatus further generates data for feedback according to the CSI measurement, and sends the data for feedback to RF circuitry via the RF circuitry interface. In an example, a frame structure of a data channel begins with a downlink (DL) transmission or soon after an initial signal. In an example, the CSI measurement includes measuring Channel Quality Information (CQI) for one or more sub-bands.

公开(公告)号：US11412450B2

公开(公告)日：2022-08-09

申请号：US16478246

申请日：2018-06-13

Applicant: Apple Inc.

Inventor： Wenting Chang ,  Huaning Niu ,  Anthony Lee ,  Salvatore Talarico ,  Qiaoyang Ye

IPC: H04W52/02 ,  H04L5/00 ,  H04W4/70 ,  H04W72/00 ,  H04W72/04 ,  H04W68/00

Abstract: Machines or networked devices such as internet of things (IoT) devices operate to generate an unlicensed IoT (U-IoT) communication or enhanced Machine Type Communication (eMTC) based on frequency hopping operations on different channels. An anchor channel can be configured to carry system information and paging messages for the U-IoT/eMTC communication on the different channels. The system information and paging messages can include essential system information such as a system information block MulteFire (SIB-MF) message. Physical channels can be configured to enable component carriers anchored to a long term evolution (LTE) licensed band, and entirely comprise unlicensed carrier components that are unanchored to any LTE component carrier in a standalone configuration to enable transmission of the U-IoT communication in standalone communications in an unlicensed band.

公开(公告)号：US20220150802A1

公开(公告)日：2022-05-12

申请号：US17583929

申请日：2022-01-25

Applicant: Apple Inc.

Inventor： Salvatore Talarico ,  Carlos Aldana ,  Bishwarup Mondal ,  Jeongho Jeon ,  Dae Won Lee

IPC: H04W48/10 ,  H04W56/00 ,  H04L5/00

Abstract: Systems and methods of providing timing information for initial access in an unlicensed band are described. A UE monitors a new radio discovery signal (NRDS-U) window in an unlicensed band for a DRS transmission that is constrained to be transmitted within the NRDS-U window. The UE determines initial access information, including an offset that indicates when the DRS transmission occurs within the NRDS-U window, and engages in initial access dependent on the offset. The offset is from a radio frame or half radio frame boundary or the start of the NRDS-U window. The offset is indicated in three least/most significant bits an SSB index or from an sl-offset field in a MIB of the SSB. When the base station uses a DFS channel, the base station transmits a periodic signal to emulate a radar signal.

公开(公告)号：US11259238B2

公开(公告)日：2022-02-22

申请号：US16515704

申请日：2019-07-18

Applicant: Apple Inc.

Inventor： Salvatore Talarico ,  Carlos Aldana ,  Bishwarup Mondal ,  Jeongho Jeon ,  Dae Won Lee

IPC: H04W48/16 ,  H04L5/00 ,  H04W56/00 ,  H04W72/00

Abstract: Systems and methods of providing timing information for initial access in an unlicensed band are described. A UE monitors a new radio discovery signal (NRDS-U) window in an unlicensed band for a DRS transmission that is constrained to be transmitted within the NRDS-U window. The UE determines initial access information, including an offset that indicates when the DRS transmission occurs within the NRDS-U window, and engages in initial access dependent on the offset. The offset is from a radio frame or half radio frame boundary or the start of the NRDS-U window. The offset is indicated in three least/most significant bits an SSB index or from an sl-offset field in a MIB of the SSB. When the base station uses a DFS channel, the base station transmits a periodic signal to emulate a radar signal.

公开(公告)号：US20210385855A1

公开(公告)日：2021-12-09

申请号：US17348699

申请日：2021-06-15

Applicant: Apple Inc.

Inventor： Salvatore Talarico ,  Gang Xiong ,  Jeongho Jeon ,  Lopamudra Kundu ,  Hwan-Joon Kwon

IPC: H04W72/14 ,  H04W72/04 ,  H04W72/12 ,  H04L5/00 ,  H04L1/18 ,  H04W80/02 ,  H04W76/27 ,  H04L1/00

Abstract: Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for configuring, transmitting, and receiving configured grant uplink transmissions. Other embodiments may be described and claimed.

公开(公告)号：US11109360B2

公开(公告)日：2021-08-31

申请号：US16267810

申请日：2019-02-05

Applicant: Apple Inc.

Inventor： Wenting Chang ,  Huaning Niu ,  Salvatore Talarico ,  Rongrong Sun

IPC: H04W72/04 ,  H04W72/00 ,  H04W56/00 ,  H04L29/08 ,  H04W88/02

Abstract: An apparatus and method for frequency hopping in the unlicensed band are described. A NB-IoT UE receives a MIB from a RAN. The MIB includes a DL/UL configuration for communication with the RAN. Frequency hopping information is preconfigured in the UE. The MIB is received in an anchor segment of a fixed NB anchor channel in the unlicensed band. The frequency hopping sequence is determined based on timing information carried in a PBCH on the anchor channel. Data is communicated between the NB-IoT UE and the RAN in data segments on the data channels in accordance with the frequency hopping sequence.

公开(公告)号：US11096247B2

公开(公告)日：2021-08-17

申请号：US16384672

申请日：2019-04-15

Applicant: Apple Inc.

Inventor： Huaning Niu ,  Wenting Chang ,  Qiaoyang Ye ,  Salvatore Talarico ,  Rongrong Sun

IPC: H04W88/10 ,  H04W4/80 ,  H04L1/18 ,  H04W72/04 ,  H04W56/00

Abstract: Methods, systems, and storage media are described for the transmission of system information in narrowband Internet-of-Things (NB-IoT) systems. Other embodiments may be described and/or claimed.

公开(公告)号：US20210226760A1

公开(公告)日：2021-07-22

申请号：US16487226

申请日：2018-03-22

Applicant: Apple Inc.

Inventor： Qiaoyang Ye ,  Debdeep Chatterjee ,  Salvatore Talarico

IPC: H04L5/00

Abstract: A network device such as an evolved NodeB (eNB) or next generation NodeB (gNB) can configure a set of user equipment (UE) for cell reference signal (CRS) muting in order to provide better channel quality and power efficiency in communications. Where an eNB mutes CRS transmissions that are not needed by any UE, an improvement in downlink throughput and reduce connection drop rate can be generated. A CRS muting capability can be determined based on a user equipment (UE) capability information. According to the CRS muting capability of a UE, CRS muting can be generated in a physical channel outside of a narrow band (NB) or a wide band (WB) plus/minus X physical resource blocks (PRBs), wherein X is a non-negative integer, based on the CRS muting capability.