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公开(公告)号：US12207148B2
公开(公告)日：2025-01-21
申请号：US18508419
申请日：2023-11-14
Applicant: Apple Inc.
Inventor： Wenting Chang , Shirish Nagaraj , Bishwarup Mondal , Yuan Zhu , Yushu Zhang
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.
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公开(公告)号：US11558886B2
公开(公告)日：2023-01-17
申请号：US15565436
申请日：2015-12-10
Applicant: APPLE INC.
Inventor： Yushu Zhang , Yuan Zhu , Wenting Chang , Gang Xiong , Qinghua Li
IPC: H04W72/12 , H04W28/04 , H04W28/02 , H04L1/18 , H04W28/10 , H04W72/04 , H04W72/14 , H04L1/16 , H04W76/28
Abstract: Briefly, in accordance with one or more embodiments, an apparatus of a user equipment (UE) comprises circuitry to configure a scheduling request (SR) transmission based on a physical uplink control channel (PUCCH), and combine the scheduling request with a buffer status report (BSR). The UE transmits the combined SR and BSR in a single subframe to a network entity, receives uplink resource scheduling from the network entity in reply to the combined SR and BSR, and transmits uplink data to the network entity according to the uplink resource scheduling.
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公开(公告)号：US11510187B2
公开(公告)日：2022-11-22
申请号：US17181797
申请日：2021-02-22
Applicant: Apple Inc.
Inventor： Ralf Matthias Bendlin , Gang Xiong , Jong-Kae Fwu , Hong He , Yushu Zhang , Seunghee Han , Yuan Zhu
IPC: H04W72/04 , H04L5/00 , H04B1/7143 , H04L27/26 , H04L1/00
Abstract: Methods and apparatus are described for transmitting uplink control information (UCI) over an OFDMA-based uplink. In some embodiments, UCI symbols are mapped to resource elements (REs) in the time/frequency resource grid to maximize frequency diversity. In some embodiments, UCI is mapped in a manner that takes into account channel estimation performance by mapping UCI symbols to those REs that are closest (in terms of OFDM subcarriers/symbols) to REs that carry reference signals.
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公开(公告)号：US20220352943A1
公开(公告)日：2022-11-03
申请号：US17859363
申请日：2022-07-07
Applicant: Apple Inc.
Inventor： Huaning Niu , Hyejung Jung , Gang Xiong , Yushu Zhang , Hooman Shirani-Mehr , Yuan Zhu , Jong-Kae Fwu
Abstract: Disclosed herein are apparatuses, systems, and methods using or implementing dynamic beamforming in control channels, by transmitting downlink control channels to user equipment (UEs) in a number of orthogonal frequency division multiplexing (OFDM) symbols of a downlink subframe. A first OFDM symbol of the number of OFDM symbols can be transmitted using first beamforming parameters in a first direction, and a second OFDM symbol of the number of OFDM symbols can be transmitted using second beamforming parameters different from the first beamforming parameters and in a second direction different from the first direction. The number of OFDM symbols used, as well as other parameters, can be dynamically adjusted in subsequent subframes. Other embodiments are described.
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公开(公告)号：US11265837B2
公开(公告)日：2022-03-01
申请号：US16480272
申请日：2018-03-14
Applicant: Apple Inc.
Abstract: User equipment performs autonomous time adjustment that includes selecting a Timing Error Limit (i.e. Te_NR) and Maximum Autonomous Time Adjustment Step (i.e. Tq_NR) based on bandwidth (BW) and subcarrier spacing (SCS). In one embodiment, given a certain downlink BW, if the SCS=x(kHz) and the Te_NR of this SCS is N, then the Te_NR of SCS=x/2(kHz) is 2*N. Given a certain downlink BW, if the SCS=x(kHz) and the Te_NR of this SCS is N, then the Te_NR of SCS=2*x(kHz) is N/2. For example, given BW=10 MHz, if the Te_NR of SCS=30kHz is n*Ts_NR (TS_NR is the basic timing unit for NR system), then the Te_NR of SCS=60 kHz is N/2*Ts_NR, and the Te_NR of SCS=15 kHz is 2*N*Ts_NR.
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Patent Agency Ranking
公开(公告)号：US20210410094A1
公开(公告)日：2021-12-30
申请号：US16476397
申请日：2018-02-06
Applicant: Apple Inc.
Inventor： Jie Cui , Hong He , Yang Tang , Yuan Zhu , Shuang Tian
Abstract: Methods and architectures to determine whether carrier aggregation (CA) component carrier signals transmitted or received by a user equipment (UE) device with a primary serving cell (PCell) and one or more secondary serving cells (SCell) exceed a maximum transmission timing difference compare a relative difference of signals derived from subframe boundaries, a subslot transmission time interval (sTTI) boundary or a combination thereof, with a maximum receive timing threshold value. In the uplink, timing advance groups (TAGs) for the PCell and/SCells may be compared by the UE to a maximum transmit timing threshold value. If the maximum thresholds are exceeded, the SCell may be dropped or changed to avoid UE from exceeding its power maximums.
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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
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.
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公开(公告)号：US20210013932A1
公开(公告)日：2021-01-14
申请号：US16938720
申请日：2020-07-24
Applicant: Apple Inc.
Inventor： Yuan Zhu , Qinghua Li , Xiaogang Chen , Jong-Kae Fwu
IPC: H04B7/0456 , H04B7/06 , H04B7/0417 , H04L5/00 , H04B7/0452
Abstract: Various embodiments include an apparatus to be employed by an enhanced Node B (eNB), the apparatus comprising communication circuitry to receive, from a user equipment (UE), feedback information and control circuitry, coupled with the communication circuitry, to identify a codeword from a three-dimensional codebook based on the feedback information received from the UE, wherein the communication circuitry is further to precede data to be transmitted to the UE based on the codeword. An apparatus to be employed by a UE and additional methods are described.
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公开(公告)号：US20200296797A1
公开(公告)日：2020-09-17
申请号：US16832938
申请日：2020-03-27
Applicant: Apple Inc.
Inventor： Gang Xiong , Glenn J. Bradford , Yushu Zhang , Jong-Kae Fwu , Yuan Zhu
Abstract: Devices for and methods of providing low latency 5G FDD communications are generally described. A HARQ ACK/NACK for an xPDSCH is transmitted in the xPUCCH of the same or next subframe as the xPDSCH and xPDCCH. An xPUSCH is generated in the same subframe in response to an xPDCCH and HARQ ACK/NACK response is carried by another xPDCCH or xPHICH in the same or next sub frame. The xPDCCH and the xPUCCH are at opposite ends of the same subframe, DL and UL subframe are delayed relative to each other, or at least one of the DL and UL subframe has an additional blank portion, portion with data associated with another UE or portion that contains a reference signal, broadcast signal or control information.
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公开(公告)号：US20200186263A1
公开(公告)日：2020-06-11
申请号：US16787344
申请日：2020-02-11
Applicant: Apple Inc.
Inventor： Yushu Zhang , Yuan Zhu , Gang Xiong , Huaning Niu , Wenting Chang
IPC: H04B17/327 , H04L5/00 , H04B7/06
Abstract: Devices and methods of simultaneous data reception and measurement are generally described. A UE transmits to an eNB antenna capacity and receives a Beamformed Reference Signal (BRS) configuration in response. Beamformed signals from the eNB include a BRS subframe in accordance with the BRS configuration. The BRS subframe has a BRS whose structure depends on the UE antenna capacity. If the UE has a single antenna panels, neither an EPDCCH nor a PDSCH for the UE is in the BRS frame. If the UE has a single antenna panels and multiple ports or multiple antenna panels, the BRS may contain an EPDCCH or PDSCH for the UE as different ports or antenna panels may be assigned different functionality. The UE measures BRS Received Power (BRS-RP) of the BRS, transmits a BRS report based on the BRS-RP and selects an optimal beam based on BRS-RPs from BRSs of the beams.
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