公开(公告)号：US11558081B1

公开(公告)日：2023-01-17

申请号：US17339884

申请日：2021-06-04

Applicant: Amazon Technologies, Inc.

Inventor： Aditya V. Padaki ,  Sai Prashanth Chinnapalli

IPC: H04B1/71 ,  H04B1/7176 ,  H04L1/18 ,  H04W4/80

Abstract: Technologies directed to data transfer protocols for Ultra-Wideband (UWB) are described. One method includes a UWB radio of a first device receiving first data from an application. The first device sends data to second and third devices, the data identifying a number of data rounds, a duration of each round, a duration of a data slot, a duration of a data block, and a first slot index for the second device and a second slot index for the third device. The first device sends, during a first slot associated with the first slot index, the first data to the second device using the UWB radio. The first device sends, during a second slot associated with the second slot index, the first data to the third device using the UWB radio.

公开(公告)号：US11290977B1

公开(公告)日：2022-03-29

申请号：US16934940

申请日：2020-07-21

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Sai Prashanth Chinnapalli

IPC: H04W24/00 ,  G08B1/08 ,  G01S13/74 ,  G01S5/02 ,  H04W64/00 ,  H04W4/02 ,  G01S5/14 ,  H04B7/08 ,  H04L101/622

Abstract: An autonomous mobile device (AMD) moves within a physical space. Various wireless devices with transmitters may be present, such as internet of things (IoT) devices, smartphones, tablets, user devices, and so forth. At different physical locations in the physical space a radio receiver of the AMD receives radio signals sent by transmitters sending data. Data is stored that is indicative of the physical location where the data was acquired, an identifier of the transmitter, and a received signal strength indication (RSSI). Estimated distances, each with respect to a different physical location, are determined based on the received signal strength. A plurality of the estimated distances and associated physical locations are used to determine an estimated location of a transmitter. For example, the estimated transmitter location may be determined as a point where the estimated distances coincide.

公开(公告)号：US11122637B1

公开(公告)日：2021-09-14

申请号：US16657808

申请日：2019-10-18

Applicant: Amazon Technologies, Inc.

Inventor： Muhaiyadeen Ansarullah Habibullah ,  Sai Prashanth Chinnapalli ,  Milos Jorgovanovic ,  Ganesha Batta

IPC: H04W8/00 ,  H04W4/00 ,  H04W76/14 ,  H04W68/00 ,  H04W4/80 ,  H04B1/713 ,  H04W72/04 ,  H04W84/20

Abstract: Technologies directed to a process of establishing a wireless connection between two devices with out-of-band transport assistance are described herein. In one method, a first device scans for a first message via a first radio. The first message includes information that a second device is using either a first or a second set of frequencies of a page hopping sequence. The first device repeatedly sends, via a second radio, a second message according to only the first or second set specified in the first message. The first device receives, via the second radio at a first frequency of the first or second set, a third message from the second device, via the second radio at the first frequency, a third message comprising additional information that establishes the wireless connection between the first device and the second device via the second radio.