公开(公告)号：US10862599B2

公开(公告)日：2020-12-08

申请号：US16410562

申请日：2019-05-13

Applicant: Apple Inc.

Inventor： Shuang Tian ,  Andrey Chervyakov ,  Dmitry Belov ,  Jie Cui ,  Yang Tang

IPC: H04B17/00 ,  H04B17/391 ,  H04B17/21 ,  H04B17/29 ,  H04B7/08

Abstract: Systems and methods provide solutions for testing an 8Rx capable UE using test cases for 4Rx capable UEs. An example method establishes a connection from a first Tx source and a second Tx source to each of 8Rx antenna ports. The connection duplicates a fading channel from both the first Tx source and the second Tx source to each of the eight Rx antenna ports, and adds independent noise for each of the 8Rx antenna ports. One test scenario uses 4Rx supported RF bands by connecting four of the Rx ports with data from a system simulator, and the other four Rx ports are connected with zero input. Same requirements specified with 4Rx capable UEs are applied. Another test scenario uses 8Rx supported RF bands and applies lower dB SNR requirements than those specified for 4Rx tests.

公开(公告)号：US10784947B2

公开(公告)日：2020-09-22

申请号：US16379047

申请日：2019-04-09

Applicant: Apple Inc.

Inventor： Yang Tang ,  Shuang Tian ,  Andrey Chervyakov ,  Jie Cui ,  Hua Li ,  Dmitry Belov ,  Carlos Cordeiro ,  Geng Wu ,  Jeongho Jeon ,  Puneet Jain ,  Qian Li ,  Youn Hyoung Heo ,  Anthony Lee ,  Seau S. Lim

IPC: H04B7/06 ,  H04W72/04 ,  H04W24/10 ,  H04W24/08

Abstract: Embodiments of a User Equipment (UE), Next Generation Node-B (gNB) and methods of communication are generally described herein. The UE receive training signals from a plurality of transmit-receive points (TRPs) associated with the gNB. Each training signal may comprise a reference signal resource identifier (ID) to indicate a corresponding TRP and a corresponding transmit direction of a plurality of transmit directions. The UE may, for each transmit direction of the plurality of transmit directions, determine an average signal quality measurement based on individual signal quality measurements in multiple receive directions. The UE may select, for reporting to the gNB, a subset of the average signal quality measurements to ensure that the average signal quality measurements excluded from the subset are less than or equal to a minimum value of the average signal quality measurements in the subset.

公开(公告)号：US11284357B2

公开(公告)日：2022-03-22

申请号：US16476375

申请日：2018-01-31

Applicant: Apple Inc.

Inventor： Jie Cui ,  Hong He ,  Yang Tang ,  Yuan Zhu ,  Shuang Tian

IPC: H04W52/36 ,  H04W72/04 ,  H04L5/00 ,  H04W52/22

Abstract: A UE may estimate the power headroom value when using shortened Transmission Time Intervals (sTTI). In one implementation, the power headroom value may be calculated based on an estimation of the UE transmission power over two or seven OFDM symbols. Alternatively or additionally, the power headroom value may be calculated based on an estimation of the UE transmission power over the period of an sTTI. Alternatively or additionally, the power headroom value may be calculated based on an average of the UE transmission power over multiple sTTI periods in a subframe. Alternatively or additionally, the power headroom value may be calculated based on a maximum or minimum of the UE transmission power measured over multiple sTTI periods in a subframe. Alternatively or additionally, the power headroom value may be calculated based on UE transmission power measured in the first or the last sTTI period in a subframe.

公开(公告)号：US10790896B2

公开(公告)日：2020-09-29

申请号：US16410498

申请日：2019-05-13

Applicant: Apple Inc.

Inventor： Hua Li ,  Yang Tang ,  Jie Cui ,  Shuang Tian ,  Yuhan Zhou

IPC: H04B7/06

Abstract: Systems and methods provide for beam detection in a wireless communication system. An apparatus for a UE may be configured to identify a plurality of CSI-RS resources corresponding to different Tx beams configured for measurement by the UE, measure an L1-RSRP for the plurality of CSI-RS resources, determine a selected Tx beam of the different Tx beams based on measured L1-RSRP values for the plurality of CSI-RS resources, and determine a measurement accuracy of a first L1-RSRP value corresponding to the selected Tx beam based on successful beam detection probability.

公开(公告)号：US20250039814A1

公开(公告)日：2025-01-30

申请号：US18912484

申请日：2024-10-10

Applicant: Apple Inc.

Inventor： Qiming LI ,  Jie Cui ,  Yang Tang ,  Yuhan Zhou ,  Shuang Tian

IPC: H04W56/00 ,  H04W4/02

Abstract: A method for enhanced autonomous uplink timing adjustment includes determining that a user equipment (UE) is traveling above a predetermined velocity. In response to the determination that the UE is traveling above the predetermined velocity, a maximum aggregate adjustment rate to an uplink timing for the UE and a maximum amount of a magnitude of a timing change to the uplink timing for the UE are determined. The uplink timing for the UE is adjusted based on the maximum aggregate adjustment rate and the maximum amount of the magnitude of the timing change.

公开(公告)号：US20240205716A1

公开(公告)日：2024-06-20

申请号：US18399097

申请日：2023-12-28

Applicant: Apple Inc.

Inventor： Jie Cui ,  Yang Tang ,  Rui Huang ,  Yuan Zhu ,  Shuang Tian

IPC: H04W24/10 ,  H04L27/26 ,  H04W28/06 ,  H04W36/00

CPC classification number: H04W24/10 ,  H04L27/2613 ,  H04L27/26136 ,  H04W28/06 ,  H04W36/0088

Abstract: An invention to perform a method of cell measurement in a wireless network, wherein the wireless network comprises a plurality of frequency layers, the invention configured to: determine a Measurement Gap Length, MGL, for each one of the plurality of frequency layers operational in the wireless network; determine a gap bitmap to indicate a measurement gap availability in a time sequence for each one of the plurality of frequency layers of the wireless network; and transmit gap assistance information for each one of the plurality of frequency layers of the wireless network to a User Equipment, wherein the gap assistance information comprises at least the determined Measurement Gap Length and the determined gap bitmap.

公开(公告)号：US11979759B2

公开(公告)日：2024-05-07

申请号：US17439202

申请日：2020-03-27

Applicant: Apple Inc.

Inventor： Qiming Li ,  Yuhan Zhou ,  Jie Cui ,  Yang Tang ,  Shuang Tian

IPC: H04W24/08 ,  H04W24/10

CPC classification number: H04W24/08 ,  H04W24/10

Abstract: In a communication system comprising user equipment (UE) and a radio access network (RAN) comprising a plurality of cells is configured for receiving, by the UE, a radio resource control (RRC) information element (IE) indicating a high speed scenario (HST); and monitoring, by the UE in response to receiving the RRC IE indicating HST, a first number of frequency carriers that is reduced relative to a second number of frequency carriers monitored by the UE during a non-HST.

公开(公告)号：US20220159498A1

公开(公告)日：2022-05-19

申请号：US17589626

申请日：2022-01-31

Applicant: Apple Inc.

Inventor： Jie Cui ,  Yang Tang ,  Rui Huang ,  Yuan Zhu ,  Shuang Tian

IPC: H04W24/10 ,  H04L27/26

Abstract: An invention to perform a method of cell measurement in a wireless network, wherein the wireless network comprises a plurality of frequency layers, the invention configured to: determine a Measurement Gap Length, MGL, for each one of the plurality of frequency layers operational in the wireless network; determine a gap bitmap to indicate a measurement gap availability in a time sequence for each one of the plurality of frequency layers of the wireless network; and transmit gap assistance information for each one of the plurality of frequency layers of the wireless network to a User Equipment, wherein the gap assistance information comprises at least the determined Measurement Gap Length and the determined gap bitmap.

公开(公告)号：US11070999B2

公开(公告)日：2021-07-20

申请号：US16499747

申请日：2018-05-01

Applicant: APPLE INC.

Inventor： Jie Cui ,  Yuan Zhu ,  Candy Yiu ,  Rui Huang ,  Yang Tang ,  Shuang Tian ,  Dae Won Lee

IPC: H04W24/10 ,  H04L1/16 ,  H04W56/00 ,  H04W88/06

Abstract: Technology for a user equipment (UE) operable to decode measurement gap patterns received from a Next Generation NodeB (gNB) is disclosed. The UE can decode a per-frequency range (per-FR) measurement gap pattern received from the gNB in a New Radio (NR) system. The per-FR measurement gap pattern can indicate a measurement gap partem for monitoring selected frequency layers within a frequency range at the UE. The UE can process one or more measurements for the selected frequency layers within the frequency range. The one or more measurements for the selected frequency layers can be measured in accordance with the per-FR measurement gap pattern. The UE can encode the one or more measurements for the selected frequency layers for reporting to the gNB.