公开(公告)号：US11432249B1

公开(公告)日：2022-08-30

申请号：US17349793

申请日：2021-06-16

Applicant: Apple Inc.

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

IPC: H04W52/36

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：US11438023B1

公开(公告)日：2022-09-06

申请号：US17318927

申请日：2021-05-12

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：US20230413194A1

公开(公告)日：2023-12-21

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：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：US11792747B2

公开(公告)日：2023-10-17

申请号：US17866322

申请日：2022-07-15

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：US20220408378A1

公开(公告)日：2022-12-22

申请号：US17866322

申请日：2022-07-15

Applicant: Apple Inc.

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

IPC: H04W52/36

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：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.