公开(公告)号：US12022573B2

公开(公告)日：2024-06-25

申请号：US17438996

申请日：2020-10-15

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Dawei Zhang ,  Deepankar Bhattacharjee ,  Haijing Hu ,  Lele Cui ,  Lijie Zhang ,  Qiang Miao ,  Zhiwei Wang

IPC: H04W8/30 ,  H04W76/15 ,  H04W76/19

CPC classification number: H04W8/30 ,  H04W76/15 ,  H04W76/19

Abstract: This disclosure relates to techniques for performing wireless communications using a split bearer. A user equipment device may perform a recovery operation for a lost uplink packet. The recovery operation may be in response to an indication from the network or may be initiated autonomously by the device.

公开(公告)号：US20230269818A1

公开(公告)日：2023-08-24

申请号：US17919466

申请日：2021-10-19

Applicant: APPLE INC.

Inventor： Lijie Zhang ,  Lele Cui ,  Kai Zhang ,  Yong Zhong ,  Zhiwei Wang ,  Qiang Miao

IPC: H04W76/28 ,  H04W72/1268

CPC classification number: H04W76/28 ,  H04W72/1268

Abstract: Techniques for low power voice communications include determining a time between an arrival of data for uplink transmission by a device and a scheduling request (SR) occasion, the SR occasion occurring after the arrival of the data and within an on duration of a discontinuous reception (DRX) cycle, and delaying transmission of a SR by the device during a time period that begins at the arrival of the data for uplink transmission and continues for the determined time.

公开(公告)号：US20230074893A1

公开(公告)日：2023-03-09

申请号：US17839684

申请日：2022-06-14

Applicant: Apple Inc.

Inventor： Lijie Zhang ,  Hailong Yang ,  Kexin Ma ,  Alex Yee Kit Ho ,  Feng Zhang, SR. ,  Bing Zhao ,  Ying Zhang ,  Zhiwei Wang ,  Qiang Miao

IPC: H04W52/36 ,  H04W72/04

Abstract: An electronic device receives an indication of a number of physical resource blocks and subcarrier spacing of at least a portion of a transmission channel and determines a dynamic transmission bandwidth, or receives an indication of a modulation coding scheme of the transmission channel and determines a modulation order. The electronic device transmits, using a transmitter, a signal over at least the portion of the transmission channel based on the dynamic transmission bandwidth being less than or equal to a threshold bandwidth, or the modulation order not corresponding to an additional power backoff, using a first power based on a maximum output power capacity of the electronic device and a maximum power reduction. Otherwise, the electronic device transmits the signal over at least the portion of the transmission channel at a second power based on the maximum output power capacity, the maximum power reduction and the additional power backoff.

公开(公告)号：US11071035B2

公开(公告)日：2021-07-20

申请号：US17020407

申请日：2020-09-14

Applicant: Apple Inc.

Inventor： Jishan Gao ,  Yong Zhong ,  Shangfeng Li ,  Lijie Zhang ,  Qiang Miao ,  Ying Zhang ,  Yaoqi Yan ,  Zhiwei Wang ,  Tao Xie ,  Junzhen Qin

IPC: H04W36/00 ,  H04W36/32 ,  H04W76/19 ,  H04W76/28 ,  H04W36/30 ,  H04W4/02 ,  H04W24/08 ,  H04W64/00

Abstract: This disclosure relates to techniques for performing radio link monitoring and cell searching when moving at high speeds. A movement speed of a wireless device may be determined. When performing a cell search, the manner of the cell search may depend on the movement speed of the wireless device, potentially including cells that are associated with high movement speed being more highly prioritized when the wireless device is determined to be at a higher movement speed than when the wireless device is determined to be at a lower movement speed.