公开(公告)号：US20220330171A1

公开(公告)日：2022-10-13

申请号：US17301582

申请日：2021-04-08

Applicant: Apple Inc.

Inventor： Prashant H. VASHI ,  Ioannis PEFKIANAKIS ,  Madhusudan CHAUDHARY ,  Rajesh AMBATI ,  Thanigaivelu ELANGOVAN

IPC: H04W52/28 ,  H04W52/14 ,  H04W52/36 ,  H04W52/34

Abstract: A user equipment (UE) determines a transmission power for data transmission to a network. The UE determines a specific absorption rate (SAR) limit associated with the UE and determines a transmission power to be allocated to data transmissions based on one or more applications running on the UE and the SAR limit.

公开(公告)号：US20240396817A1

公开(公告)日：2024-11-28

申请号：US18324851

申请日：2023-05-26

Applicant: Apple Inc.

Inventor： Ioannis PEFKIANAKIS

IPC: H04L43/0864 ,  H04L43/0829 ,  H04L43/16 ,  H04W24/08

Abstract: The described embodiments regard latency estimation by a wireless device for a cellular wireless access link. The wireless device determines maximum grant allocations (e.g., maximum transport block size values) for time slots based on channel conditions, monitors grant allocations to the wireless device, and classifies time slots having non-zero grant allocations based on a comparison of the grant allocations to the maximum possible grants to determine traffic bursts. The wireless device measures time periods of time slots with zero grant allocations within traffic bursts to estimate latency values for traffic bursts. The wireless device statistically processes the latency values to generate a composite (e.g., weighted moving average) latency value to compare with a threshold to determine whether to initiate latency mitigation actions.

公开(公告)号：US20240306176A1

公开(公告)日：2024-09-12

申请号：US18669298

申请日：2024-05-20

Applicant: Apple Inc.

Inventor： Madhusudan CHAUDHARY ,  Arun G. MATHIAS ,  Rajesh AMBATI ,  Ajay SINGH ,  Franco TRAVOSTINO ,  Muthukumaran DHANAPAL ,  Lakshmi N. KAVURI ,  Ajoy K. SINGH ,  Thanigaivelu ELANGOVAN ,  Ioannis PEFKIANAKIS ,  Raghuveer MALLIKARJUNAN ,  Faraz FAHEEM ,  Geoffrey R. HALL ,  Harshit CHUTTANI ,  Rohan C. MALTHANKAR ,  Prashant H. VASHI ,  Hisham A. MAHMOUD ,  Henri S. BERGER ,  Divyaprakash P. BHOJKUMAR

IPC: H04W72/51 ,  H04L65/61 ,  H04W52/02 ,  H04W72/0453

CPC classification number: H04W72/51 ,  H04L65/61 ,  H04W52/027 ,  H04W52/0277 ,  H04W52/028 ,  H04W72/0453

Abstract: Embodiments described herein relate to managing access to 5G cellular baseband resources for 5G-capable wireless devices. A wireless device can monitor application workloads by analyzing communication network performance requirements for a given application in-use or launching for future use along with system-level indications of overall device usage, battery level, and mobility status to determine whether access to 5G cellular baseband resources is recommended for an application. A 5G cellular baseband resource recommendation is provided for an application indicating a level of bandwidth in current use or expected for future use as well as a confidence metric in the bandwidth level indication. The 5G cellular baseband resource recommendation is used with additional device criteria to determine whether access to one or more 5G radio frequency bands is allowed.

公开(公告)号：US20240098654A1

公开(公告)日：2024-03-21

申请号：US17932666

申请日：2022-09-15

Applicant: Apple Inc.

Inventor： Lorenzo BERTIZZOLO ,  Prashant H. VASHI ,  Ioannis PEFKIANAKIS

IPC: H04W52/36 ,  H04W52/14 ,  H04W52/26

CPC classification number: H04W52/367 ,  H04W52/146 ,  H04W52/267

Abstract: This application describes methods and apparatus to allocate uplink (UL) power dynamically across multiple parallel radio frequency links for wireless devices. The wireless device sets an initial maximum transmit power level (MTPL) for each UL radio link of multiple radio links used for UL traffic based on a duty cycle prediction for the respective UL radio link. The wireless device adjusts the initial MTPL for each UL radio link based on a predicted data throughput for the UL radio link relative to a total predicted data throughput for all UL radio links. The adjusted MTPL for each UL radio link can be also reduced when the UL radio link uses UL multiple input multiple output (MIMO) transmission via multiple antenna ports, e.g., by apportioning the adjusted MTPL among the multiple antenna ports of the UL radio link equally.

公开(公告)号：US20250055490A1

公开(公告)日：2025-02-13

申请号：US18731986

申请日：2024-06-03

Applicant: Apple Inc.

Inventor： Murali Mohan CHAKKA ,  Baohua ZHENG ,  Ioannis PEFKIANAKIS ,  Prashant H. VASHI ,  Amith Kumar NAGARAJ ,  Karan R. SACHDEV ,  Muthukumaran DHANAPAL ,  Sharad GARG ,  Vijay GADDE ,  Tarakkumar G. DHANANI ,  Sanjeevi BALASUBRAMANIAN

IPC: H04B1/10 ,  H04B1/04

Abstract: This application sets forth techniques for mitigating radio frequency (RF) interference from wired connections on cellular wireless reception quality, including pre-emptively determining when to perform RF interference mitigation based on various factors. An interference mitigation module in the wireless device determines whether to perform an interference mitigation procedure based on active and/or imminent use of a high-speed wired connection port for data transfer in parallel with a cellular wireless connection that uses a mid-frequency RF band or a high-frequency RF band. The wireless device determines a target cell in a low-frequency RF band and biases measurement reports sent to a cellular wireless network to handover and keep the cellular wireless connection to the target cell in the low-frequency RF band while a high-speed wired connection is active.

公开(公告)号：US20210282127A1

公开(公告)日：2021-09-09

申请号：US17189015

申请日：2021-03-01

Applicant: Apple Inc.

Inventor： Madhusudan CHAUDHARY ,  Arun G. MATHIAS ,  Rajesh AMBATI ,  Ajay SINGH ,  Franco TRAVOSTINO ,  Muthukumaran DHANAPAL ,  Lakshmi N. KAVURI ,  Ajoy K. SINGH ,  Thanigaivelu ELANGOVAN ,  Ioannis PEFKIANAKIS ,  Raghuveer MALLIKARJUNAN ,  Faraz FAHEEM ,  Geoffrey R. HALL ,  Harshit CHUTTANI ,  Rohan C. MALTHANKAR ,  Prashant H. VASHI ,  Hisham A. MAHMOUD ,  Henri S. BERGER ,  Divyaprakash P. BHOJKUMAR

IPC: H04W72/04 ,  H04L29/06 ,  H04N7/14

Abstract: Embodiments described herein relate to managing access to 5G cellular baseband resources for 5G-capable wireless devices. A wireless device can monitor application workloads by analyzing communication network performance requirements for a given application in-use or launching for future use along with system-level indications of overall device usage, battery level, and mobility status to determine whether access to 5G cellular baseband resources is recommended for an application. A 5G cellular baseband resource recommendation is provided for an application indicating a level of bandwidth in current use or expected for future use as well as a confidence metric in the bandwidth level indication. The 5G cellular baseband resource recommendation is used with additional device criteria to determine whether access to one or more 5G radio frequency bands is allowed.