Alan F Jovanovich

US Patent:

6556553, Apr 29, 2003

Filed:

Apr 12, 1999

Appl. No.:

09/291581

Inventors:

Brian G. Palmer - Redmond WA
Alan F. Jovanovich - Des Moines WA

Assignee:

Intermec IP Corp. - Beverly Hills CA

International Classification:

H04Q 720

US Classification:

370333, 370331, 455440, 455436

Abstract:

Methods for improving communication performance in a wireless communication system where the wireless communication system has at least one mobile wireless communication device and a plurality of transmitter/receiver sites. The transmitter/receiver sites have a geographic area, defined as a cell, within which the mobile wireless communication devices can communicate with at least one of the transmitter/receiver sites. The methods determine when the mobile wireless communication device should rate shift or roam based on connection quality measurement data. In one method, the measurement data is subjected to configurable parameters to create a functional relationship value that is recorded. The recorded functional relationship values are trended and extrapolated to determine whether a rate shift or roam should be performed. In a second method, the measurement data taken prior to a communication connection failure is stored in at least one data vector with there being at least one data vector for each rate shift and one for roam. A functional relationship utilizing current measurements, last data rate, and the respective data vectors determines whether a rate shift or roam should be performed.

US Patent:

6791959, Sep 14, 2004

Filed:

Jun 29, 1999

Appl. No.:

09/342315

Inventors:

Brian G. Palmer - Redmond WA
Alan F. Jovanovich - Des Moines WA

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04Q 700

US Classification:

370332, 370328, 370329, 370331, 370335, 370342, 455423, 455424, 455 631, 455436

Abstract:

Methods for improving communication performance in a wireless communication system where the wireless communication system has at least one mobile wireless communication device and a plurality of transmitter/receiver sites. The transmitter/receiver sites have a geographic area, defined as a cell, within which the mobile wireless wireless communication devices can communicate with at least one of the transmitter/receiver sites. The methods determine when the mobile wireless communication device should rate shift or roam based on connection quality measurement data or position information such as GPS.

US Patent:

7400605, Jul 15, 2008

Filed:

Sep 13, 2004

Appl. No.:

10/940064

Inventors:

Brian G. Palmer - Redmond WA, US
Alan F. Jovanovich - Des Moines WA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04Q 7/00

US Classification:

370333, 370328, 370332, 455423, 4554352, 455436, 4554522, 455455

Abstract:

Methods for improving communication performance in a wireless communication system where the wireless communication system has at least one mobile wireless communication device and a plurality of transmitter/receiver sites. The transmitter/receiver sites have a geographic area, defined as a cell, within which the mobile wireless communication devices can communicate with at least one of the transmitter/receiver sites. The methods determine when the mobile wireless communication device should rate shift or roam based on connection quality measurement data or position information such as GPS. In one method, the measurement data is subjected to configurable parameters to create a functional relationship value that is recorded. The recorded functional relationship values are trended and extrapolated to determine whether a rate shift or roam should be performed. In a second method, the measurement data taken prior to a communication connection failure is stored in at least one data vector with there being at least one data vector for each rate shift and one for roam.

US Patent:

8218507, Jul 10, 2012

Filed:

Jul 15, 2008

Appl. No.:

12/173297

Inventors:

Brian G. Palmer - Redmond WA, US
Alan F. Jovanovich - Des Moines WA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04W 4/00
H04W 24/00

US Classification:

370333, 370328, 4554352, 455437, 455425, 455 6711

Abstract:

Methods for improving communication performance in a wireless communication system where the wireless communication system has at least one mobile wireless communication device and a plurality of transmitter/receiver sites. The transmitter/receiver sites have a geographic area, defined as a cell, within which the mobile wireless communication devices can communicate with at least one of the transmitter/receiver sites. The methods determine when the mobile wireless communication device should rate shift or roam based on connection quality measurement data or position information such as GPS. In one method, the measurement data is subjected to configurable parameters to create a functional relationship value that is recorded. The recorded functional relationship values are trended and extrapolated to determine whether a rate shift or roam should be performed. In a second method, the measurement data taken prior to a communication connection failure is stored in at least one data vector with there being at least one data vector for each rate shift and one for roam.

US Patent:

8331792, Dec 11, 2012

Filed:

May 28, 2010

Appl. No.:

12/790375

Inventors:

Alan Frank Jovanovich - Port Ludlow WA, US
Jeffrey Douglas Scotten - Granite Bay CA, US

Assignee:

Emulex Design & Manufacturing Corporation - Costa Mesa CA

International Classification:

H04B 10/00

US Classification:

398140, 398135, 455 68

Abstract:

Provided herein are various schemes for transmitting out of band (OOB) signals over optical connections that may not support the transmission of such signals. One scheme may involve converting the OOB signals to different types of signals that are supported by the optical connection, while another scheme may utilize a separate parallel connection that supports the transmission of out of band signals in order to extend the optical connection. Yet another scheme modulates the reference clock of the original (in-band) signal to transmit and receive the OOB information.

US Patent:

59129212, Jun 15, 1999

Filed:

Aug 20, 1997

Appl. No.:

8/915260

Inventors:

Bruce G. Warren - Poulsbo WA
Alan F. Jovanovich - Des Moines WA
John W. Mensonides - Monroe WA

Assignee:

Intermec IP Corp. - Beverly Hills CA

International Classification:

H04B 138

US Classification:

375220

Abstract:

A wireless local area network (WLAN) provides optimal data throughput by operating at multiple data rates simultaneously. The WLAN includes a network master communicating with a plurality of remote client transceiver nodes. The network master maintains a table of active client transceiver nodes. The table includes a current data rate for each of the active client transceiver nodes. Periodic high-speed and low-speed beacon signals are transmitted from the network master to the active client transceiver nodes. Each of the active client transceiver nodes receives and processes the beacon signals to determine an optimal data rate. Then, each of the active client transceiver nodes transmits a return signal to the network master which designates the determined optimal data rate. Thereafter, the network master updates the table to reflect the optimal data rate for each of the active client transceiver nodes. Subsequent messages from the network master to the active client transceiver nodes are thereby transmitted at the current data rate for each respective one of the active client transceiver nodes.

US Patent:

54955009, Feb 27, 1996

Filed:

Aug 9, 1994

Appl. No.:

8/287645

Inventors:

Alan F. Jovanovich - Des Moines WA
Bruce G. Warren - Poulsbo WA

Assignee:

Intermec Corporation - Everett WA

International Classification:

H04B 1707

US Classification:

375206

Abstract:

A homodyne radio system for receiving direct sequence spread spectrum communications enables a received signal to be down-converted directly to a baseband signal. An input RF amplifier receives and amplifies a carrier signal modulated by a digital code sequence. A local oscillator provides a signal having a frequency substantially equal to the frequency of the carrier signal. A phase splitter coupled to the input RF amplifier receives the modulated carrier signal, and splits the signal into corresponding quadrature component signals. The mixer combines a first one of the quadrature component signals with the local oscillator signal to generate a first quadrature baseband output signal. A second one of the quadrature component signals is combined with the local oscillator signal shifted in phase by 90. degree. to generate a second quadrature baseband output signal.

US Patent:

59405090, Aug 17, 1999

Filed:

Nov 18, 1997

Appl. No.:

8/972905

Inventors:

Alan F. Jovanovich - Des Moines WA
Bruce G. Warren - Poulsbo WA
Duane G. Charron - Marysville WA
Steven B. Duke - Bothell WA

Assignee:

Intermec IP Corp. - Woodland Hills CA

International Classification:

H04L 932

US Classification:

380 23

Abstract:

A secure communication system is provided for transmitting a country specific frequency allocation in encrypted form between a host processor and a remote device. The secure communication system comprises a host processor and a remote device capable of communicating with the host processor over a communication link. The host processor has a plurality of stored data sets and a predefined encryption algorithm. Each one of the stored data sets comprises a country specific frequency allocation. The remote device has a unique identifier code and also has the predefined encryption algorithm. Responsive to the unique identifier code, the host processor provides a selected one of the plurality of data sets in encrypted form by utilizing the predefined encryption algorithm. The unique identifier code provides an encryption key for the predefined encryption algorithm. The remote device then decrypts the encrypted data set using the predefined encryption algorithm with the identifier code as a decryption key.