公开(公告)号：US20230089794A1

公开(公告)日：2023-03-23

申请号：US17834801

申请日：2022-06-07

Applicant: Apple Inc.

Inventor： Firouz Behnamfar ,  Christian W. Mucke ,  Sharad Sambhwani

IPC: H04W76/28 ,  H04W28/18 ,  H04W24/10

Abstract: An electronic device may include wireless circuitry with a radio that conveys wireless data with a wireless base station using antennas according to a communication schedule and that performs sensing using the antennas. The sensing may involve transmission of sensing signals and reception of reflected signals during sensing periods. Control circuitry may adjust timing of the sensing periods, based on network configuration information and the current sensing requirements of the device, to align with scheduled inactive times for the radio. In this way, the radio may perform radio-frequency sensing for use in adjusting wireless transmissions to satisfy radio-frequency exposure requirements without substantially disrupting wireless data communications.

公开(公告)号：US20220408369A1

公开(公告)日：2022-12-22

申请号：US17894047

申请日：2022-08-23

Applicant: Apple Inc.

Inventor： Jie Cui ,  Sharad Sambhwani ,  Yang Tang ,  Hong He ,  Dawei Zhang ,  Wei Zeng ,  Haitong Sun ,  Yuchul Kim ,  Yushu Zhang ,  Chunhai Yao ,  Chunxuan Ye ,  Weidong Yang ,  Zhibin Wu ,  Dirk Nickisch

IPC: H04W52/14 ,  H04B1/3827 ,  H04W52/36 ,  H04W52/24

Abstract: A wireless network may include a base station and user equipment (UE). The UE may transmit uplink (UL) signals to the base station using a dynamically adjustable maximum UL duty cycle. When the UE identifies that a user is in proximity to the UE, the UE may transmit an indicator to the base station. The indicator may identify that a radio-frequency exposure (RFE) event has occurred and/or a suggested maximum UL duty cycle that would allow the UE to satisfy limits on RFE. The base station may limit a UL grant to the UE so that the UE performs subsequent communications using the suggested maximum UL duty cycle or a different maximum UL duty cycle. Coordinating adjustment of UL duty cycle in this way may allow the UE to meet limits on RFE without requiring the UE to perform maximum transmit power level reductions.

公开(公告)号：US20220369237A1

公开(公告)日：2022-11-17

申请号：US17868637

申请日：2022-07-19

Applicant: Apple Inc.

Inventor： Jie Cui ,  Sharad Sambhwani ,  Yang Tang ,  Hong He ,  Dawei Zhang ,  Wei Zeng ,  Haitong Sun ,  Yuchul Kim ,  Yushu Zhang ,  Chunhai Yao ,  Chunxuan Ye ,  Weidong Yang ,  Zhibin Wu ,  Dirk Nickisch

IPC: H04W52/14 ,  H04W52/24 ,  H04W52/36 ,  H04B1/3827

Abstract: A wireless network may include a base station and user equipment (UE). The UE may transmit uplink (UL) signals to the base station using a dynamically adjustable maximum UL duty cycle. When the UE identifies that a user is in proximity to the UE, the UE may transmit an indicator to the base station. The indicator may identify that a radio-frequency exposure (RFE) event has occurred and/or a suggested maximum UL duty cycle that would allow the UE to satisfy limits on RFE. The base station may limit a UL grant to the UE so that the UE performs subsequent communications using the suggested maximum UL duty cycle or a different maximum UL duty cycle. Coordinating adjustment of UL duty cycle in this way may allow the UE to meet limits on RFE without requiring the UE to perform maximum transmit power level reductions.

公开(公告)号：US20220368366A1

公开(公告)日：2022-11-17

申请号：US17868513

申请日：2022-07-19

Applicant: Apple Inc.

Inventor： Sharad Sambhwani ,  Digvijay A. Jadhav ,  Dirk Nickisch ,  Gil Katzir ,  Laxminarayana Pillutla

IPC: H04B1/3827 ,  H04W24/08

Abstract: An electronic device may include a first set of radios subject to a specific absorption rate (SAR) limit and a second set of radios subject to a maximum permissible exposure (MPE) limit over an averaging period. Control circuitry may dynamically adjust radio-frequency (RF) exposure metric budgets provided to the radios over the averaging period, based on feedback reports from the radios identifying the amount of SAR and MPE consumed by the radios during different subperiods of the averaging period. The control circuitry may distribute and adjust SAR budgets and MPE budgets across the radios based on the feedback reports, distribution policies, radio statuses, transmit activity factors, and/or usage ratios associated with the radios. This may provide efficient utilization of the total available SAR and MPE budget, thereby leading to increased uplink coverage and throughput relative to scenarios where the SAR and MPE budgets remain static.

公开(公告)号：US20250038804A1

公开(公告)日：2025-01-30

申请号：US18917664

申请日：2024-10-16

Applicant: Apple Inc.

Inventor： Sung-En Chiu ,  Sharad Sambhwani

IPC: H04B7/06

Abstract: A base station may transmit beams to user equipment. The user equipment may receive the beams and transmit a signal to a base station. The base station may determine signal characteristics associated with the beams based on the signal and compare the signal characteristics with predefined signal characteristics that correspond to potential locations of the user equipment. Based on this comparison, the base station may determine a position of the user equipment and transmit a targeted beam based on the position of the user equipment. The base station may also track the position of the user equipment and provide an updated targeted beam based on an updated position of the user equipment. Accordingly, the base station may efficiently form and update the targeted beam based on the predefined signal characteristics, thereby reducing an amount of time required to establish and maintain communication with the user equipment.

公开(公告)号：US20240397501A1

公开(公告)日：2024-11-28

申请号：US18792079

申请日：2024-08-01

Applicant: Apple Inc.

Inventor： Sharad Sambhwani ,  Dirk Nickisch ,  Madhukar Krishnamoorthi Shanbhag ,  Sanjeevi Balasubramanian ,  Shiva Krishna Narra ,  Sriram Subramanian ,  Vishwanth Kamala Govindaraju

IPC: H04W72/0453

Abstract: This disclosure provides various techniques for decreasing the time it takes user equipment to tune away from a compromised network connection. By more quickly detecting a signal characteristic issue (e.g., signal quality issue) in the compromised signal and performing mitigation actions, the user equipment may decrease power consumption and increase data throughput. The signal quality issue may be detected by monitoring the location of the user equipment, a channel impulse response of the user equipment, and/or a block error rate (BLER) of a signal, among other methods. The data obtained may be fed into confidence validation logic, which may determine a level of confidence that the signal quality issue may cause a weak or broken connection between the user equipment and a network. The confidence validation logic may, based on the determination, operate the user equipment in an active state, a suspend state, or a release state.

公开(公告)号：US12143181B2

公开(公告)日：2024-11-12

申请号：US18101959

申请日：2023-01-26

Applicant: Apple Inc.

Inventor： Sung-En Chiu ,  Sharad Sambhwani

IPC: H04B7/06

Abstract: A base station may transmit beams to user equipment. The user equipment may receive the beams and transmit a signal to a base station. The base station may determine signal characteristics associated with the beams based on the signal and compare the signal characteristics with predefined signal characteristics that correspond to potential locations of the user equipment. Based on this comparison, the base station may determine a position of the user equipment and transmit a targeted beam based on the position of the user equipment. The base station may also track the position of the user equipment and provide an updated targeted beam based on an updated position of the user equipment. Accordingly, the base station may efficiently form and update the targeted beam based on the predefined signal characteristics, thereby reducing an amount of time required to establish and maintain communication with the user equipment.

公开(公告)号：US12096382B2

公开(公告)日：2024-09-17

申请号：US18459301

申请日：2023-08-31

Applicant: Apple Inc.

Inventor： Sharad Sambhwani ,  Digvijay A. Jadhav ,  Dirk Nickisch ,  Gil Katzir ,  Laxminarayana Pillutla

IPC: H04W52/36

CPC classification number: H04W52/367

Abstract: An electronic device may include a radio that generates a first maximum power based on a radio-frequency exposure (RFE) budget. The radio may transmit signals subject to the first maximum power during a subperiod of an averaging period and may generate an instantaneous RFE metric value based on an antenna coefficient and the conducted transmit power of the antenna during the subperiod. The radio may generate a consumed RFE value by averaging the instantaneous RFE metric value with previous instantaneous RFE values from the averaging period, may generate a remaining budget based on the consumed RFE value, may generate a second maximum transmit power based on the remaining budget, and may transmit signals during a subsequent subperiod subject to the second maximum power. Time-averaging the RFE metric may serve to optimize performance of the radio relative to scenarios where the radio performs time-averaging of conducted TX power.

公开(公告)号：US20240250741A1

公开(公告)日：2024-07-25

申请号：US18157682

申请日：2023-01-20

Applicant: Apple Inc.

Inventor： Sharad Sambhwani ,  Boqiang Fan ,  Ankit Bhamri ,  Mithat C Dogan

IPC: H04B7/145 ,  H04B7/0426

CPC classification number: H04B7/145 ,  H04B7/043

Abstract: A communication system may include a base station (BS), user equipment (UE), and a set of reconfigurable intelligent surfaces (RIS's). The RIS's, the UE, and the BS may communicate using a control RAT and a data RAT. The BS may transmit downlink (DL) signals to the UE device via reflection off a DL RIS. The UE device may transmit uplink (UL) signals to the BS via reflection off a UL RIS. This may optimize wireless performance in situations where reflecting the UL and DL signals off the same RIS would limit performance under the current data RAT channel conditions. The BS and the UE device may use channel measurements of the control RAT at the RIS's to select the UL RIS and the DL RIS. This may significantly reduce overhead required to identify the UL and DL RIS's relative to scenarios where exhaustive beam training is used.

公开(公告)号：US20240097862A1

公开(公告)日：2024-03-21

申请号：US17948003

申请日：2022-09-19

Applicant: Apple Inc.

Inventor： Anatoliy S Ioffe ,  Amit Freiman ,  Alexander Sayenko ,  Sumit Verma ,  Sharad Sambhwani

IPC: H04L5/00

CPC classification number: H04L5/0073 ,  H04L5/0007 ,  H04L5/0092 ,  H04L5/0094

Abstract: User equipment may transmit and receive wireless signals to and from various communication networks. Furthermore, user equipment may indicate usage capabilities to the various wireless communication networks to enable the user equipment to transmit and/or receive wireless signals to and from at least two different communication networks. In particular, the user equipment may indicate usage capabilities of supporting both Frequency Range 2 (FR2) wireless signals of a fifth generation (5G) network and 7-24 gigahertz (GHz) wireless signals of a sixth generation (6G) network in an intermediate frequency range of the user equipment. The communication network(s) may then configure and/or schedule the user equipment based on the usage capabilities to enable the user equipment to simultaneously or non-simultaneously communicate using both the FR2 wireless signals and the 7-24 GHz wireless signals while preventing interference in the intermediate frequency range of the user equipment.