公开(公告)号：US10863494B2

公开(公告)日：2020-12-08

申请号：US16252294

申请日：2019-01-18

Applicant: Apple Inc.

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

IPC: H04W72/04 ,  H04L5/00

Abstract: Systems, apparatuses, methods, and computer-readable media are provided for time domain resource allocations in wireless communications systems. Disclosed embodiments include time-domain symbol determination and/or indication using a combination of higher layer and downlink control information signaling for physical downlink shared channel and physical uplink shared channel; time domain resource allocations for mini-slot operations; rules for postponing and dropping for multiple mini-slot transmission; and collision handling of sounding reference signals with semi-statically or semi-persistently configured uplink transmissions. Other embodiments may be described and/or claimed.

公开(公告)号：US20200351668A1

公开(公告)日：2020-11-05

申请号：US16865011

申请日：2020-05-01

Applicant: Apple Inc.

Inventor： Lopamudra Kundu ,  Gang Xiong ,  Yongjun Kwak

IPC: H04W16/14 ,  H04W72/04 ,  H04L1/16 ,  H04W80/08 ,  H04W74/08 ,  H04L5/00

Abstract: Apparatuses, systems, and methods for providing frequency domain resource allocation schemes for use in unlicensed spectrum. A wireless device may determine a frequency domain resource allocation scheme for use for uplink communication in unlicensed spectrum. The wireless device may receive information indicating a frequency domain resource allocation for an uplink communication in unlicensed spectrum in accordance with the frequency domain resource allocation scheme. The wireless device may perform the uplink communication using the indicated frequency domain resource allocation.

公开(公告)号：US20200322979A1

公开(公告)日：2020-10-08

申请号：US16907206

申请日：2020-06-20

Applicant: Apple Inc.

Inventor： Debdeep Chatterjee ,  Sergey Panteleev ,  Gang Xiong

IPC: H04W72/12 ,  H04W72/04 ,  H04L5/14 ,  H04L5/00

Abstract: The disclosure describes mechanisms for reliability enhancement on control channel and data channel and mechanisms in URLLC. An apparatus of a RAN node for URLLC includes baseband circuitry to configure at least one DCI for scheduling transmission of at least one PDSCH content having same information. For each DCI, the baseband circuitry determines a CORESET for transmitting the DCI. The disclosure further describes mechanisms for the support of low latency transmission in URLLC. To improve peak data rate and spectrum efficiency in FDD system, the RAN node configures a DCI for scheduling data transmission using blank resources of a self-contained slot structure. Further, CBG-based transmission with separate HARQ-ACK feedback is provided to configure a DCI for scheduling data transmission of a TB and to divide the TB into multiple CBGs, and to configure uplink control data to carry separate HARQ feedback for the CBGs.

公开(公告)号：US20200295899A1

公开(公告)日：2020-09-17

申请号：US16890558

申请日：2020-06-02

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Yushu Zhang ,  Ajit Nimbalker ,  Joonyoung Cho ,  Lopamudra Kundu

IPC: H04L5/00 ,  H04L29/08 ,  H04B7/06 ,  H04L27/26 ,  H04B7/0456

Abstract: Embodiments of a User Equipment (UE), Next Generation Node-B (gNB) and methods of communication are generally described herein. A channel state information (CSI) report may include a CSI part 1 transmission and may be configurable to include a CSI part 2 transmission. The UE may determine a first number of coded modulation symbols per layer to be used for the CSI part 1 transmission on a physical uplink shared channel (PUSCH) without uplink shared channel (UL-SCH) data. The first number of coded modulation symbols per layer may be determined as: a minimum of a first term and a second term if the CSI report includes the CSI part 2 transmission; and the second term if the CSI report does not include the CSI part 2 transmission.

公开(公告)号：US10771987B2

公开(公告)日：2020-09-08

申请号：US15935402

申请日：2018-03-26

Applicant: Apple Inc.

Inventor： Konstantinos D. Dimou ,  Gang Xiong ,  Seunghee Han ,  Hong He

IPC: H04W24/02 ,  H04W48/12 ,  H04W24/08 ,  H04W74/08 ,  H04W74/00 ,  H04W36/08

Abstract: Embodiments of a User Equipment (UE) to operate in accordance with a physical random access channel (PRACH) are disclosed herein. The UE may comprise hardware processing circuitry to determine a coverage enhancement category for the UE based on downlink channel statistics related to reception of downlink signals at the UE from an Evolved Node-B (eNB) and an uplink-downlink imbalance parameter related to uplink reception at the eNB. The hardware processing circuitry may be further to select, for use in a coverage enhancement mode, a PRACH preamble from a set of candidate PRACH preambles based on the determined coverage enhancement category for the UE. In some embodiments, at least some of the candidate PRACH preambles may span a different number of sub-frames.

公开(公告)号：US20200274595A1

公开(公告)日：2020-08-27

申请号：US16807013

申请日：2020-03-02

Applicant: Apple Inc.

Inventor： Wenting Chang ,  Yuan Zhu ,  Huaning Niu ,  Gang Xiong ,  Yushu Zhang

IPC: H04B7/06 ,  H04B7/0413

Abstract: Machine-readable media, methods, apparatus and system for beam acquisition in a wireless system are disclosed. In some embodiments, a base station may comprise a transceiver to transmit, to a user equipment (UE), a plurality of beam reference signals (BRSs) via a plurality of transmission beams; and to receive, from the UE, a report to report receiving information associated with at least one of the BRSs on at least one of the transmission beams, wherein the report comprises an antenna identifier to identify a directional antenna panel or an antenna port associated with the directional antenna panel of the UE which receives the at least one of the BRSs on the at least one of the transmission beam.

公开(公告)号：US20200245366A1

公开(公告)日：2020-07-30

申请号：US16724069

申请日：2019-12-20

Applicant: Apple Inc.

Inventor： Debdeep Chatterjee ,  Alexey Khoryaev ,  Gang Xiong ,  Seunghee Han

IPC: H04W74/08 ,  H04W48/04 ,  H04W8/00 ,  H04L29/08

Abstract: Embodiments described herein related generally to techniques for device discovery for device-to-device (D2D) communications. A user equipment (UE) may receive a transmission probability (e.g., from an evolved Node B (eNB)) for transmission of a discovery medium access control (MAC) protocol data unit (PDU) for D2D communications. The UE may determine a pseudo-random number based on an identifier of the UE, information in the discovery MAC PDU, or information associated with a discovery period. The UE may compare the pseudo-random number with the transmission probability to determine whether to transmit the discovery MAC PDU in the discovery period. Another UE may also determine the pseudo-random number to determine whether the UE is to transmit the discovery MAC PDU in the discovery period. Other embodiments may be described and claimed.

公开(公告)号：US20200177250A1

公开(公告)日：2020-06-04

申请号：US16780477

申请日：2020-02-03

Applicant: Apple Inc.

Inventor： Wenting Chang ,  Yuan Zhu ,  Yushu Zhang ,  Gang Xiong ,  Huaning Niu

IPC: H04B7/06 ,  H04B7/08

Abstract: Devices for and methods of synchronous beam refinement using a beam refinement reference signal (BRRS) are generally described. In one example embodiment, a UE receives BRRS information indicating switching of a Tx beam. The UE then uses this information to switch an associated Rx beam. In some embodiments, timing information is used to match the switching times. In some embodiments. DCI and CSI-RS operations are used to determine switching for the synchronous beam refinement.

公开(公告)号：US10666334B2

公开(公告)日：2020-05-26

申请号：US15746983

申请日：2015-12-11

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Yushu Zhang ,  Yuan Zhu ,  Ralf Bendlin ,  Jong-Kae Fwu ,  Seunghee Han

IPC: H04B7/06 ,  H04L5/00 ,  H04W76/27 ,  H04L1/18 ,  H04L27/26 ,  H04W72/04 ,  H04W88/10

Abstract: In one example, an apparatus of an e-NodeB (eNB) capable to establish a communication connection with a user equipment (UE) in a communication network, the eNB comprising processing circuitry to transmit a downlink (DL) beamforming training reference signal (BF-TRS) to a user equipment (UE) using transmit beamforming weights that are the same. Other examples are also disclosed and claimed.

公开(公告)号：US20200154422A1

公开(公告)日：2020-05-14

申请号：US16742043

申请日：2020-01-14

Applicant: Apple Inc.

Inventor： Jong-Kae Fwu ,  Gang Xiong

IPC: H04W72/04 ,  H04W4/70 ,  H04L5/00 ,  H04L27/26 ,  H04W72/12

Abstract: An eNodeB (eNB), user equipment (UE) and method of providing a flexible Radio Access Technology (FRAT) are generally described. The information (resource allocation, partition information and numerology) of at least one of a plurality of RATs used by the eNB is provided to a UE. Each RAT has a flexible subcarrier spacing and symbol duration, which are integer multiples of a base subcarrier spacing and symbol duration, and is associated with at least one of different temporal and frequency resources. The symbol and/or frame structure of each RAT are independent. A Transmission Time Interval (TTI) boundary between the RATs is common, and the RATs comprise a common reference TTI duration. The information of the RATs is provided either via a different RAT than the RAT used by the UE for communication or via a dedicated carrier in the RAT used by the UE for communication.