公开(公告)号：US12166563B2

公开(公告)日：2024-12-10

申请号：US18476802

申请日：2023-09-28

Applicant: Apple Inc.

Inventor： Dhruv Khati ,  Shiva Krishna Narra ,  Sudhir K. Baghel ,  Sanjeevi Balasubramanian ,  Sebastian Balint Seeber ,  Anjaneyulu Maganti ,  Jeremiah Hsu ,  Venkateswara Rao Manepalli

IPC: H04B7/08 ,  G01S19/22 ,  G01S19/42

Abstract: Methods, devices, and apparatus to adapt operating parameters for satellite signal reception and transmission by a wireless device to mitigate effects of fading due to specular reflections are described herein. The wireless device measures received signal power levels and compares characteristics of the measurements over an observation duration to at least one fading criteria to determine whether to operate in a normal or adaptive mode. While operating in the adaptive mode, the wireless device alternates between high performance mode time periods and low performance mode time periods. The wireless device indicates to a ground station associated with the satellite in which operating mode the wireless device is operating via an uplink data message transmitted during a data cycle at the start of a high or low performance mode time period. The ground station schedules data transmissions accordingly during subsequent data cycles of the high or low performance mode time periods.

公开(公告)号：US11843443B1

公开(公告)日：2023-12-12

申请号：US17235855

申请日：2021-04-20

Applicant: Apple Inc.

Inventor： Dhruv Khati ,  Shiva Krishna Narra ,  Sudhir K. Baghel ,  Sanjeevi Balasubramanian ,  Sebastian Balint Seeber ,  Anjaneyulu Maganti ,  Jeremiah Hsu ,  Venkateswara Rao Manepalli

IPC: H04B7/08 ,  G01S19/22 ,  G01S19/42

CPC classification number: H04B7/0894 ,  G01S19/22 ,  G01S19/428

Abstract: Methods, devices, and apparatus to adapt operating parameters for satellite signal reception and transmission by a wireless device to mitigate effects of fading due to specular reflections are described herein. The wireless device measures received signal power levels and compares characteristics of the measurements over an observation duration to at least one fading criteria to determine whether to operate in a normal or adaptive mode. While operating in the adaptive mode, the wireless device alternates between high performance mode time periods and low performance mode time periods. The wireless device indicates to a ground station associated with the satellite in which operating mode the wireless device is operating via an uplink data message transmitted during a data cycle at the start of a high or low performance mode time period. The ground station schedules data transmissions accordingly during subsequent data cycles of the high or low performance mode time periods.