Dennis P Diekelman

US Patent:

6603957, Aug 5, 2003

Filed:

Mar 31, 2000

Appl. No.:

09/540727

Inventors:

John A. Sherman - Tempe AZ
Dennis P. Diekelman - Chandler AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04B 7185

US Classification:

455 131, 455 132, 455927, 455 121

Abstract:

The present invention provides a method and apparatus for establishing a partnering scheme having dynamic cross-links between satellites of a satellite communication system that are travelling in different, non-adjacent orbital planes and in different directions. The present invention provides a definitive set of dynamic cross-links for a satellite positioned within a first orbital plane traveling in a first direction, such as an ascending direction, with a satellite positioned in a non-adjacent orbital plane and traveling in a second direction, such as an descending direction.

US Patent:

56127014, Mar 18, 1997

Filed:

Sep 18, 1995

Appl. No.:

8/529829

Inventors:

Dennis P. Diekelman - Tempe AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04B 7185

US Classification:

342354

Abstract:

A method and apparatus for allocating service beams (72, 76) to communication units (80-84) (CUs) ascertains (124) the location of a CU (81) attempting to access the communication system (30), and determines (126) whether a currently active service beam (72) is capable of providing service to the CU (81). If so, a ground position aim point (90) is determined (134), and the active service beam (72) is steered (142) to the ground position aim point (90). If not, a new service beam (76) is provided (132) to the CU (83). When a call is terminated (162), a new ground position aim point (92) is determined (168) and the service beam (72) is steered (170) to the new ground position aim point (92). If no remaining CUs are being serviced by the service beam, the service beam is deactivated is (166).

US Patent:

62264931, May 1, 2001

Filed:

May 31, 1996

Appl. No.:

8/657846

Inventors:

Raymond Joseph Leopold - Tempe AZ
Dennis Paul Diekelman - Tempe AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04B 719

US Classification:

455 131

Abstract:

A geosynchronous satellite system (10) uses crosslinks (30) between geosynchronous satellites (16) which travel along the same ground path (18) or are located within a common orbital slot (32) in order to increase traffic-carrying capacity and decrease signal delays. The geosynchronous satellites (16) can have substantial angles of inclination to provide high quality coverage within a wide range of latitudes (40, 42). In addition, the orbits can be elliptical, resulting in concentrated network capacity in either the northern or southern hemisphere. For co-positioned satellites (171-174), orbit perturbations are introduced in order to eliminate crosslink blockage caused by intervening satellites (172, 173). Methods for deploying and operating the geosynchronous satellite system enable network capacity to be modified (708) and routing (804), crosslinks (1008), and handoffs (908) to be controlled.

US Patent:

55554440, Sep 10, 1996

Filed:

Mar 11, 1994

Appl. No.:

8/208772

Inventors:

Dennis P. Diekelman - Tempe AZ
Catherine B. Stockwell - Phoenix AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04B 7185

US Classification:

455 121

Abstract:

A method and apparatus for controlling operations of a cellular communication system having multiple satellites, multiple subscriber units which communicate through the multiple satellites, and a system control segment which creates a subscriber traffic prediction and manages operation of the communication system. The method includes the steps of decomposing a traffic prediction request into regional traffic requests; determining a regional traffic prediction for each regional traffic request based on past regional traffic history; and combining the regional traffic requests into a consolidated subscriber traffic prediction. The subscriber traffic prediction is then used to determine a system operational plan which controls operations of the communication system.

US Patent:

55795366, Nov 26, 1996

Filed:

Jun 13, 1994

Appl. No.:

8/259093

Inventors:

James T. Stackman - Chandler AZ
Dennis P. Diekelman - Tempe AZ
Victor H. Cutler - Mesa AZ
Gerald J. Davieau - Eldersburg MD

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04B 100

US Classification:

455 541

Abstract:

A method and apparatus for establishing communication links between communication units that travel in different, determinable directions. The method includes the steps of calculating communication link boundary corridors, generating operational plans that inform the communication units how to establish and maintain a communication link, transmitting the operational plans to the communication units, and establishing links according to the operational plans. The apparatus includes a control segment that generates the operational plans and transmits them to the communication units.

US Patent:

55903959, Dec 31, 1996

Filed:

Nov 10, 1993

Appl. No.:

8/150702

Inventors:

Dennis P. Diekelman - Tempe AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04B 7185

US Classification:

455 131

Abstract:

A method for managing resource usage within a cellular communications system (10) having at least one satellite (12) and, capable of communicating with the satellite(s) (12), at least one controlling station (28) and multiple ground terminals (26). The controlling station (28) predicts (372, 380) system communication traffic and operating capabilities for a future period; generates (216) a system plan (250) and an individual operational plan (270-30n) for each satellite (12) based on the prediction; distributes (222) each individual operational plan (270-30n) to each corresponding satellite (12); monitors (226) execution of the system plan (250) during the future period to determine (228) whether the plan is operating acceptably and when the plan is not operating acceptably (228), generates (216) a new plan, or portion thereof, to alleviate the unacceptable operation; and repeats the foregoing steps for additional future periods. Each satellite (12) receives (502), stores (504), executes (224) and monitors execution (226) of its individual operational plan (270-30n) and transmits out-of-plan messages (338) to the controlling station (28) when it detects an out-of-plan condition (336).

US Patent:

55746608, Nov 12, 1996

Filed:

Jul 12, 1993

Appl. No.:

8/089464

Inventors:

Dennis P. Diekelman - Tempe AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G06F 1700

US Classification:

364514R

Abstract:

A method and apparatus for operating a radio for communicating between a terrestrial station and a satellite by (i) selecting one of a number of predetermined computational methods for computing longitudes of particular satellite ground path equator crossings based on minimum and maximum ground path latitudes and terrestrial station coverage perimeter latitudes, (ii) determining a first range of longitudes of satellite ground path equator crossings corresponding to the coverage perimeter, (iii) determining with the selected method, a first time of day when a first equator crossing has a longitude falling within the first range of longitudes, (iv) determining first and second time intervals for satellite ground path position to move from the first equator crossing into and out of the coverage perimeter and (v) activating the radio during a time determined from a combination of the first time of day and the first and second time intervals.

US Patent:

58945903, Apr 13, 1999

Filed:

Jul 31, 1995

Appl. No.:

8/509677

Inventors:

Gregory Barton Vatt - Mesa AZ
Dennis Paul Diekelman - Tempe AZ
John E. Major - Barrington Hills IL

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04B 7185

US Classification:

455 121

Abstract:

Multiple, different, independent constellations (10, 20) of satellites (2, 21-23) share a portion of a common frequency spectrum such as a single carrier frequency. The satellites' antennas (11) may be either multi-beam or omni-directional, while those of earth stations (13, 14) are directional. When interference occurs between communications of a satellite (31) of a first constellation (10) and a satellite (41) of a second constellation (20), any of several interference-mitigation options may be employed, such as the first satellite (31) handing off communications to a second satellite (32) of the same constellation (10), or temporarily suspending communications. The remedial action may occur in response to either predicted or detected interference.