公开(公告)号：US20230199841A1

公开(公告)日：2023-06-22

申请号：US17697778

申请日：2022-03-17

Applicant: Apple Inc.

Inventor： Sarvesh Kumar Varatharajan ,  Arun Vijayakumari Mahasenan ,  Venkateswara Rao Manepalli ,  Won Soo Kim ,  Yaranama Venkata Ramana Dass ,  Giri Prassad Deivasigamani ,  Anil G Naik ,  Piyush Kumar Upadhyay

IPC: H04W74/08

CPC classification number: H04W74/0816

Abstract: The present disclosure relates to several techniques for reducing the occurrence of data collisions, which can occur when multiple devices simultaneously transmit data in the same (frequency) channel. For example, a turnaround time in which a device switches from a receive mode of operation to a transmit mode of operation may be reduced based on the device and another device indicating that they are capable of operating with a reduced turnaround. As another example, devices may use learning-based turnaround estimation to determine a turnaround time supported by other devices and utilize the determined turnaround time, for instance, instead of a longer turnaround time. As yet another example, multiple clear channel assessments may be performed before transmitting data. For instance, a first clear channel assessment may be performed during a backoff period, and a second clear channel assessment may be performed afterwards before data is transmitted.

公开(公告)号：US11903027B2

公开(公告)日：2024-02-13

申请号：US17697778

申请日：2022-03-17

Applicant: Apple Inc.

Inventor： Sarvesh Kumar Varatharajan ,  Arun Vijayakumari Mahasenan ,  Venkateswara Rao Manepalli ,  Won Soo Kim ,  Yaranama Venkata Ramana Dass ,  Giri Prassad Deivasigamani ,  Anil G Naik ,  Piyush Kumar Upadhyay

IPC: H04W74/08

CPC classification number: H04W74/0816

Abstract: The present disclosure relates to several techniques for reducing the occurrence of data collisions, which can occur when multiple devices simultaneously transmit data in the same (frequency) channel. For example, a turnaround time in which a device switches from a receive mode of operation to a transmit mode of operation may be reduced based on the device and another device indicating that they are capable of operating with a reduced turnaround. As another example, devices may use learning-based turnaround estimation to determine a turnaround time supported by other devices and utilize the determined turnaround time, for instance, instead of a longer turnaround time. As yet another example, multiple clear channel assessments may be performed before transmitting data. For instance, a first clear channel assessment may be performed during a backoff period, and a second clear channel assessment may be performed afterwards before data is transmitted.