公开(公告)号：US11129125B1

公开(公告)日：2021-09-21

申请号：US16812004

申请日：2020-03-06

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Matthew A. Silverman ,  John M. Swartz ,  Vishal S. Desai ,  Robert E. Barton

IPC: H04W48/20 ,  H04W64/00 ,  G01S13/74

Abstract: Coordinated radio fine time measurement is provided via sending, from a client device, a ranging request to a first radio; receiving a first response sent at a first time from the first radio over a first channel; receiving a second response sent at the first time from a second radio over a second channel; and calculating, based on times of flight for the first response and the second response, a location of the client device relative to the first radio and to the second radio. Coordinated radio fine time measurement is also proved via in response to receiving, at an Access Point (AP), a ranging request from a client device and determining to respond using multiple channels: sending, both at a first time, a first response from a first radio over a first channel a second response from a second radio over a different channel.

公开(公告)号：US11024961B2

公开(公告)日：2021-06-01

申请号：US16875655

申请日：2020-05-15

Applicant: Cisco Technology, Inc.

Inventor： Fred J. Anderson ,  Danielle N. Bane ,  John M. Blosco ,  Paul J. Stager ,  Daniel N. Johnson ,  Timothy A. Frank ,  John M. Swartz

IPC: H04B7/0413 ,  H01Q3/36 ,  H04B7/06

Abstract: An electronically a steerable and switchable antenna array is provided that can produce a first beam with a first coverage range and a second beam with a second coverage range by selecting one of a first and a second beamwidth for both the first and second beams; in response to selecting the first beamwidth: switching signal inputs to narrow-beam antenna arrays; steering the first beam to one of a first positive, negative, or zero offset position; independently steering the second beam to one of a second positive, negative offset, or zero offset position; and transmitting signals received from the signal inputs via the first beam and the second beam; and in response to selecting the second beamwidth: switching signal inputs to wide-beam antenna arrays; and transmitting signals received from the signal inputs via the first beam and the second beam.