Christopher Lee Reece

US Patent:

61482013, Nov 14, 2000

Filed:

Jul 31, 1998

Appl. No.:

9/127104

Inventors:

Hakan Ernam - Dallas TX
Christopher S. Reece - Plano TX
Jim Xu - Plano TX

Assignee:

Nortel Networks Corporation - Montreal

International Classification:

H04Q 720

US Classification:

455433

Abstract:

A wireless communication system constructed according to the present invention assigns mobile units to equalize loading among a plurality of mobile switching centers. The wireless communication system includes the plurality of mobile switching centers and a base station system which includes a plurality of base station controllers, each of which couples to a plurality of base stations. A plurality of mobile units served by the system are assigned to the mobile switching centers so that loading is equalized. In one particular construction of the wireless communication system, a dispatching switch couples the base station system to the plurality of mobile switching centers and performs the assignments of the mobile units. In an example of operation, upon attachment of a mobile unit, the dispatching switch determines loading of each of the mobile switching centers. Then, based upon the loading, the dispatching switch assigns the mobile unit to one of the mobile switching centers, the "serving" mobile switching center.

US Patent:

60979518, Aug 1, 2000

Filed:

Aug 6, 1998

Appl. No.:

9/130293

Inventors:

Hakan Ernam - Plano TX
Jim Xu - Plano TX
Christopher S. Reece - Plano TX

Assignee:

Northern Telecom Limited - Montreal

International Classification:

H04Q 720

US Classification:

455433

Abstract:

A method and apparatus for scaling a wireless telecommunications network having an architecture based upon subscriber distribution includes providing a base station subsystem (BSS) and a pool of mobile switching centers (MSCs) interconnected with one another. The mobile switching centers include visitor location registers (VLRs). Lastly, a dispatcher mobile switching center (DMSC) is provided, the dispatcher mobile switching center being coupled between the base station subsystem (BSS) and the pool of mobile switching centers (MSCs) for establishing communication between the base station subsystem (BSS) and the pool of mobile switching centers (MSCs). The dispatcher mobile switching center (DMSC) further provides for distributing mobile station subscribers and call related work among the pool of mobile switching centers (MSCs).

US Patent:

57651035, Jun 9, 1998

Filed:

Aug 16, 1996

Appl. No.:

8/698831

Inventors:

Shun Hua Zhou - Dallas TX
F. Marco Marchetti - Plano TX
Christopher S. Reece - Plano TX
Payam Maveddat - Plano TX
Gokul V. Subramaniam - Plano TX
Ramanathan Balachander - Dallas TX
Louis Perez - Richardson TX
Balaji S. Holur - Plano TX
Robert L. Hicks - Dallas TX

Assignee:

Northern Telecom Limited - Montreal

International Classification:

H04Q 738

US Classification:

455434

Abstract:

While setting up a fixed wireless system, each subscriber radiotelephone is configured to a permanent home cell. Subscribers located at the border of a cell may be configured to multiple cells for better coverage. The signal levels at the border subscriber's position are received and the mean values of each determined. These mean values are listed in descending order. If the largest mean value is greater than a predetermined threshold, the subscriber is configured to only the home cell. If the largest mean value is within a predetermined range, the second largest mean value is evaluated to determine if it is within the predetermined range. If so, the subscriber is configured to both serving cells. If the second largest mean value is outside the predetermined range, the subscriber is configured to only the home cell.