公开(公告)号：US11095319B2

公开(公告)日：2021-08-17

申请号：US16831912

申请日：2020-03-27

Applicant: Apple Inc.

Inventor： Ayman F. Naguib ,  Arun Yadav ,  Robert Golshan

IPC: H04B1/38 ,  H04B1/00

Abstract: An electronic device configures two or more virtual responders associated with different subsets of capabilities of a physical responder in the electronic device, where the physical responder comprises a radio-frequency (RF) transceiver and multiple antennas, and where a given virtual responder corresponds to the RF transceiver and a given antenna. Then, the electronic device performs, based at least in part on wirelessly communication with a second electronic device and using at least the virtual responders, measurements on wireless signals from the second electronic device to the electronic device, where the measurements correspond to a time of flight of the wireless signals. Next, the electronic device determines, based at least in part on the measurements, a range between the electronic device and the second electronic device, where the determination uses the measurements from different virtual responders to correct for an environmental condition and/or increase an accuracy of the determined range.

公开(公告)号：US11057743B2

公开(公告)日：2021-07-06

申请号：US16784022

申请日：2020-02-06

Applicant: Apple Inc.

Inventor： Yagil Burowski ,  Subash Marri Sridhar ,  Ayman Naguib ,  Robert Golshan

IPC: H04W4/029 ,  H04W4/02

Abstract: A mobile device can include ranging circuitry to determine distance to another mobile device. Ranging between multiple mobile devices can present challenges due to clock drift between the devices resulting in missed messages due to collisions between ranging messages. Techniques can be implemented to reduce the number of collisions by designating time slots for ranging sessions based on timing from a coordinator mobile device. Alternative techniques allow for splitting up channels at different time amount different pairs of devices. The ranging techniques can be used to share information between devices with a predefined distance for applications such as augmented reality.