公开(公告)号：US12238808B2

公开(公告)日：2025-02-25

申请号：US17933915

申请日：2022-09-21

Applicant: APPLE INC.

Inventor： Lijie Zhang ,  Lele Cui ,  Xiaolong Tu ,  Dongzhou Yang ,  Tao Tao ,  Lei Zhou ,  Zihuan Xu

IPC: H04W76/28 ,  H04L1/00

Abstract: Systems and methods related to “on/off” determinations regarding the performance of physical downlink control channel (PDCCH) monitoring during connected mode discontinuous reception (CDRX) on duration windows are disclosed herein. In some cases, a radio access network (RAN) predicts whether a downlink (DL) packet for a UE will arrive at a buffer of the RAN prior to an end of a CDRX on duration window of the UE, and sends a downlink control information (DCI) with a cyclic redundancy check (CRC) scrambled by a power-saving radio network temporary identifier (PS-RNTI) (DCP) for the CDRX on duration window indicating whether or not the UE should perform PDCCH monitoring during the CDRX on duration window based on the prediction. In some cases, a UE determines a current state of DL traffic and adaptively uses DCP monitoring based on the current state of the traffic. Aggregation level adaptation by the RAN is also discussed.

公开(公告)号：US12219396B2

公开(公告)日：2025-02-04

申请号：US17945627

申请日：2022-09-15

Applicant: Apple Inc.

Inventor： Kai Zhang ,  Lele Cui ,  Deepankar Bhattacharjee

IPC: H04W28/08 ,  H04L47/263 ,  H04L47/32

Abstract: Systems, methods, and apparatuses disclosed herein can mitigate transmitting latency to improve the quality of a voice or the video call. These systems, methods, and apparatuses reset a transmitting latency timer upon retrieving a packet from a transmitting buffer. Thereafter, these systems, methods, and apparatuses start the count of the transmitting latency timer as the packet is being processed. And these systems, methods, and apparatuses compare the transmitting latency timer e with a transmitting latency threshold as these systems, methods, and apparatuses are processing a packet for transmission. These systems, methods, and apparatuses can drop the packet and/or can select another packet for processing in response to the transmitting latency timer exceeding the transmitting latency threshold to mitigate the transmitting latency.

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：US20220394110A1

公开(公告)日：2022-12-08

申请号：US17888331

申请日：2022-08-15

Applicant: Apple Inc.

Inventor： Yingjie Zhao ,  Jianxiong Shi ,  Lele Cui ,  Li Su ,  Faraz Faheem

IPC: H04L69/04 ,  H04L69/14 ,  H04L69/16 ,  H04L69/22 ,  H04W28/06 ,  H04W80/06 ,  H04W88/02

Abstract: Systems, methods, and mechanisms for performing ROHC header compression on TCP packets with MPTCP option enabled. A compressor may determine that a first portion of the stream of data packets is formatted according to the transmission control protocol (TCP) with a multipath TCP (MPTCP) option enabled. The compressor may establish context with a corresponding decompressor and may operate in one of three modes of compression based on the context. In some embodiments, when the context indicates that the corresponding decompressor supports decompression of TCP data packets with MPTCP option enabled, the compressor may operate in a first or second mode of compression. In some embodiments, when the context indicates that the corresponding decompressor does not support decompression of TCP data packets with MPTCP option enabled, the compressor may operation in a third mode of compression.

公开(公告)号：US20220072175A1

公开(公告)日：2022-03-10

申请号：US17519287

申请日：2021-11-04

Applicant: Apple Inc.

Inventor： Srirang A. Lovlekar ,  Sethuraman Gurumoorthy ,  Murtaza A. Shikari ,  Srinivasan Nimmala ,  Sree Ram Kodali ,  Fangli Xu ,  Haijing Hu ,  Yuqin Chen ,  Dawei Zhang ,  Longda Xing ,  Zhiwei Wang ,  Yaoqi Yan ,  Muthukumaran Dhanapal ,  Beibei Wang ,  Lele Cui

IPC: A61L2/24 ,  A61L2/10 ,  A61L2/22 ,  G05D1/00 ,  G05D1/10

Abstract: Devices and associated methods for operating a dual-subscriber identity module (SIM) dual-standby (DSDS) user equipment device (UE) configured with a first SIM and a second SIM. The UE performs communications with a first cellular network using the first SIM and a first radio resource control (RRC) connection, and receives a request to perform a higher priority communication using the second SIM. In response to the request to perform the higher priority communication, the UE transmits a request to the first network to suspend the first RRC connection. After transmission of the request to suspend the first RRC connection, the UE receives a message from the first network to place the first RRC connection in an inactive state, and initiates a timer, wherein the timer is used to determine whether the first RRC connection remains in the inactive state or transitions to an idle state.

公开(公告)号：US20200304604A1

公开(公告)日：2020-09-24

申请号：US16084658

申请日：2017-09-29

Applicant: Apple Inc.

Inventor： Yingjie Zhao ,  Jianxiong Shi ,  Lele Cui ,  Li Su ,  Faraz Faheem

IPC: H04L29/06 ,  H04W28/06 ,  H04W80/06 ,  H04W88/02

Abstract: Some embodiments relate to a user equipment device (UE), and associated methods for performing ROHC header compression on TCP packets with MPTCP option enabled. In some embodiments, a compressor may determine that a first portion of the stream of data packets is formatted according to the transmission control protocol (TCP) with a multipath TCP (MPTCP) option enabled. The compressor may establish context with a corresponding decompressor and may operate in one of three modes of compression based on the context. In some embodiments, when the context indicates that the corresponding decompressor supports decompression of TCP data packets with MPTCP option enabled, the compressor may operate in a first or second mode of compression. In some embodiments, when the context indicates that the corresponding decompressor does not support decompression of TCP data packets with MPTCP option enabled, the compressor may operation in a third mode of compression.