John L Swartz

US Patent:

8539319, Sep 17, 2013

Filed:

Jan 28, 2011

Appl. No.:

13/016117

Inventors:

Neil Diener - Hudson OH, US
John Matthew Swartz - Lithia FL, US
William Robert Seed - Los Altos CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H03M 13/00

US Classification:

714776

Abstract:

In an example embodiment, there is described herein a methodology were the Forward Error Correction (FEC) data for a data stream is distributed into a plurality of FEC sub-streams. Subscribers to the data stream indicate which of the plurality of FEC sub-streams should be provided to them. The distribution of FEC sub-streams are limited to subscribed FEC sub-streams. FEC sub-streams with no subscribers are not forwarded beyond a distribution point such as an access point (AP).

US Patent:

20220200558, Jun 23, 2022

Filed:

Mar 14, 2022

Appl. No.:

17/654717

Inventors:

- San Jose CA, US
Evgeny YANKEVICH - Beachwood OH, US
John M. SWARTZ - Lithia FL, US

International Classification:

H03G 3/30
H03G 3/00
H04W 28/02
H04B 1/10

Abstract:

Dynamic automatic gain controller configuration in multiple input and multiple output receivers is provided by monitoring a given section of wireless spectrum for higher-priority signals using a first antenna set associated with a first Automatic Gain Controller (AGC) set while concurrently monitoring the given section of wireless spectrum for wireless packet-based traffic using a second antenna set associated with a second AGC set; in response to detecting a packet via the second antenna set: re-associating the first antenna set and the second antenna set to a third AGC set; receiving the packet via the first antenna set and the second antenna set using the third AGC set; and in response to the packet being received, re-associating the first antenna set to the first AGC set and the second antenna set to the second AGC set.

US Patent:

20210377901, Dec 2, 2021

Filed:

Aug 13, 2021

Appl. No.:

17/445060

Inventors:

- San Jose CA, US
Matthew A. SILVERMAN - Shaker Heights OH, US
John M. SWARTZ - Lithia FL, US
Vishal S. DESAI - San Jose CA, US
Robert E. BARTON - Richmond, CA

International Classification:

H04W 64/00
G01S 13/74

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.

US Patent:

20210282107, Sep 9, 2021

Filed:

Mar 6, 2020

Appl. No.:

16/812004

Inventors:

- San Jose CA, US
Matthew A. SILVERMAN - Shaker Heights OH, US
John M. SWARTZ - Lithia FL, US
Vishal S. DESAI - San Jose CA, US
Robert E. BARTON - Richmond, CA

International Classification:

H04W 64/00
G01S 13/74

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.

US Patent:

20210249770, Aug 12, 2021

Filed:

Apr 28, 2021

Appl. No.:

17/302253

Inventors:

- San Jose CA, US
Danielle N. BANE - Cleveland OH, US
John M. BLOSCO - Norton OH, US
Paul J. STAGER - Akron OH, US
Daniel N. JOHNSON - Louisville OH, US
Timothy A. FRANK - Medina OH, US
John M. SWARTZ - Lithia FL, US

International Classification:

H01Q 3/36
H04B 7/0413
H04B 7/06

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.

US Patent:

20210135359, May 6, 2021

Filed:

May 15, 2020

Appl. No.:

16/875655

Inventors:

- San Jose CA, US
Danielle N. BANE - Cleveland OH, US
John M. BLOSCO - Norton OH, US
Paul J. STAGER - Akron OH, US
Daniel N. JOHNSON - Louisville OH, US
Timothy A. FRANK - Medina OH, US
John M. SWARTZ - Lithia FL, US

International Classification:

H01Q 3/36
H04B 7/0413

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.

US Patent:

20200288323, Sep 10, 2020

Filed:

Mar 5, 2019

Appl. No.:

16/293218

Inventors:

- San Jose CA, US
Daniel Joseph Lyons - Medina OH, US
Pooya Monajemi - Irvine CA, US
John Matthew Swartz - Lithia FL, US

International Classification:

H04W 16/10
H04W 74/08
H04L 1/00
H04W 72/04
H04W 80/08
H04B 17/336
H04W 72/08

Abstract:

In one illustrative example, a device configured for use in a wireless local area network (WLAN) may cause a spatial reuse (SR) adjustment to be performed based on data received from a multi-user receiver procedure for the blind detection and demodulation of colliding packets from multiple stations. This procedure may be performed by one or more access points (APs) and/or distributed sensor nodes, each having such a multi-user receiver. The procedure may involve receiving and decoding, over a channel, a first spatial stream from a first device of a first base service set (BSS) color; simultaneously receiving and decoding, over the channel, a second spatial stream from a second device of a second BSS color (i.e. an overlapping BSS or “OBSS”); and calculating a signal-to-interference ratio (SIR) based on signal levels associated with the streams. The SR adjustment may involve adjusting an OBSS Packet Detect (PD) (OBSS-PD) threshold.

US Patent:

20190215842, Jul 11, 2019

Filed:

Jan 9, 2018

Appl. No.:

15/865877

Inventors:

- San Jose CA, US
Zhigang Gao - Twinsburg OH, US
Oscar Bejarano Chavez - Cleveland OH, US
John Matthew Swartz - Lithia FL, US
Santosh Ghanshyam Pandey - Fremont CA, US

International Classification:

H04W 72/08
H04B 7/06
H04W 24/10
H04W 48/00

Abstract:

In one embodiment, a control device associated with a wireless network of a given location determines a reference quality of location readings between access points and client devices based on using substantially all of an available wireless communication bandwidth. The control device may then determine channel state information (CSI) between the client devices and access points for each orthogonal frequency-division multiple access (OFDMA) resource unit (RU), and selects a subset of RUs for allocation to each respective client device, based on the subset of RUs allocated to each respective client device i) surpassing a determined threshold of certain parameters of the CSI, while also ii) providing a minimum quality of a location reading based on using only the subset of RUs as compared to the reference quality of location readings. The control device may then allocate the selected subset of RUs to each respective client device for location-preserving OFDMA-signaling-based communication.