Joseph J Lester

US Patent:

7558235, Jul 7, 2009

Filed:

Nov 7, 2003

Appl. No.:

10/704296

Inventors:

Joseph O. Lester - Chandler AZ, US
Apoorv Chaudhri - Sunrise FL, US
Leslie G. Gustafson - Oakwood Hills IL, US
Stanko Jelavic - Davis FL, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04Q 7/00
H04Q 7/28
H04Q 7/20
H04J 3/16

US Classification:

370329, 370341, 370437, 455450

Abstract:

In a network comprising a plurality of channels, at least two channels are operating at different frequencies. The fixed network equipment (FNE; ) identifies a plurality of channels present at a serving site and classifies each channel into one of a plurality of bandwidth groups. All the channels in a given bandwidth group have common roaming characteristics. The FNE periodically broadcasts information relating to at least one channel in each bandwidth group present at the serving site. The FNE further identifies least one channel present at an adjacent site. Each channel present at the adjacent site is also classified in one of the plurality of bandwidth groups. The FNE broadcasts information on loading for each bandwidth group present at the adjacent site.

US Patent:

57377316, Apr 7, 1998

Filed:

Aug 5, 1996

Appl. No.:

8/692109

Inventors:

Joseph Olk Lester - Mesa AZ
Scott David Blanchard - Mesa AZ
Dean Paul VandenHeuvel - Chandler AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G06F 1208

US Classification:

707 1

Abstract:

A global communication system must comply with service restrictions when operating across political and other restrictive boundaries. The location of a subscriber unit must be correlated to a service area region for identifying and extending appropriate restrictions and services. The Earth is partitioned into equally spaced areas (125, 130) with entries stored in database records. Service area boundary data (205) overlays the equally spaced areas (125, 130) to assign each equally spaced area to a location area enabling efficient use of the communication system. Equally spaced areas (125, 130) are iteratively subdivided to form a hierarchical database (350) when service area boundary data (205) bisects an equally spaced area (125, 130).

US Patent:

60729864, Jun 6, 2000

Filed:

Jul 31, 1997

Appl. No.:

8/903693

Inventors:

Scott David Blanchard - Mesa AZ
Dean Paul Vanden Heuvel - Chandler AZ
Joseph Olk Lester - Mesa AZ

Assignee:

Motorola Inc. - Schaumburg IL

International Classification:

H04B 7185
H04B 700

US Classification:

455 134

Abstract:

In a global satellite communication system (10) that provides antenna beams that move with respect to Earth's surface, gateways (22) send ring alerts directed to subscriber units (26) based on a list of antenna beams. The list of antenna beams is determined by a dot product between a subscriber unit's basis vector and antenna beam vectors. Ring alerts are transmitted in antenna beams when the dot product exceeds a predetermined threshold. Subscriber units listen for ring alerts in the same antenna beams of the list by calculating the list the same way the gateway calculates the list.

US Patent:

46821740, Jul 21, 1987

Filed:

Oct 7, 1985

Appl. No.:

6/785125

Inventors:

Carl T. Richmond - Scottsdale AZ
Joseph O. Lester - Mesa AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G01S 1352

US Classification:

342160

Abstract:

A surface acoustic wave (SAW) device in a pseudo-coherent moving target indicator uses a common input transducer to delay both reference and signal inputs to a mixer by varying amounts. The mixer produces a Doppler signal which is processed within a single range cell. The SAW device may contain additional delay paths which drive other range cells. Power splitting and amplification sections of the moving target indicator are minimized through use of the SAW device.

US Patent:

56129785, Mar 18, 1997

Filed:

May 30, 1995

Appl. No.:

8/453420

Inventors:

Scott D. Blanchard - Mesa AZ
Joseph O. Lester - Mesa AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04B 110

US Classification:

375350

Abstract:

A finite impulse response filter performs an FFT on a signal, multiplies it by a transfer function in the frequency domain, and then performs an inverse FFT. The transfer function is dynamically computed in real-time by detecting signal energy in the frequency domain and turning off bins that contain the signal. The signal is delayed prior to turning off the bin in a FIFO memory by an amount equal to the time required to compute the transfer function. In this way, relatively fast changes in the interference environment can be tracked and rejected. For example, short duration narrow band interference signals in the presence of a wideband signal of interest, including direct sequence (DS) spread-spectrum signals in the presence of frequency hopped (FH) spread spectrum signals are rejected. The received signal quality of DS spread spectrum signals is improved.

US Patent:

60816007, Jun 27, 2000

Filed:

Oct 3, 1997

Appl. No.:

8/939720

Inventors:

Scott David Blanchard - Mesa AZ
Dean Paul Vanden Heuvel - Chandler AZ
Joseph Olk Lester - Mesa AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04L 900

US Classification:

380255

Abstract:

A system and method provides signaling privacy for communications between nodes of a communications network (30). Multiple logical links exist between distinct network nodes (38-40, 42, 50-53) of the communication network (30). Signaling privacy is achieved by a subscriber unit (80) providing encryption/decryption of signaling data messages at the messaging level. The subscriber unit (80) employs a signaling encryptor/decryptor (86) along the signaling path, which enables the signaling data messages to be separately encrypted from data on the traffic channel. The encrypted signaling data can then be sent along a different logical link from the traffic, while maintaining cipher key synchronization between the signaling encryptor/decryptor (86) and a network encryptor/decryptor (78) at a remote end of the logical link which transports the encrypted signaling data.

US Patent:

57900736, Aug 4, 1998

Filed:

Mar 13, 1996

Appl. No.:

8/627218

Inventors:

Daniel Richard Tayloe - Phoenix AZ
Dean Paul Vanden Heuvel - Chandler AZ
Joseph Olk Lester - Mesa AZ
Scott David Blanchard - Mesa AZ
Johanna Alexandra Wild - Scottsdale AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G01S 502

US Classification:

342357

Abstract:

A system (28) provides communication services to mobile units (24). Mobile units (24) perform a unit-based location process (46, 48) to determine their locations. The system (28) performs a system-based location process (64, 66) to independently determine mobile unit locations. The system-based process may determine location less precisely than the unit-based process. A location selection process (104) evaluates the unit-determined location in view of a system-determined location error region to decide whether the unit-determined location is reliable. If the unit-determined location is reliable, it is used (120) to qualify communication services to be provided to the mobile unit (24). If the unit-determined location is unreliable, the system-based process is repeated (116) to improve the system-determined location precision, and the resulting system-determined location is used (118) to qualify communication services to be provided to the mobile unit (24).

US Patent:

56297076, May 13, 1997

Filed:

Jan 6, 1995

Appl. No.:

8/369617

Inventors:

Dean P. V. Heuvel - Chandler AZ
Scott D. Blanchard - Mesa AZ
Joseph O. Lester - Mesa AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G01S 502
H04B 7185
H04B 100

US Classification:

342357

Abstract:

A subscriber unit (26) communicates with a satellite (12) using electromagnetic signals so that observations (102) of the signals are obtained. Surface contours are generated (104) based on the signal component measured. The surface contour intersections produce candidate locations on the earth's surface. The candidate locations seed a least-squares estimation to produce final locations. Data produced during the least-squares fit is used to generate confidence ellipses (116) about the final locations. Most likely actual locations are determined from the fit associated with the confidence regions. A variety of signal source measurements can be used while providing a best estimate of a signal source location when an exact solution is not mathematically possible. The location is converted to coordinates that can be used in a satellite communication system (10) for making decisions regarding the granting or denying of communication services, billing rate and the like.