Jill R Baumann

US Patent:

6442157, Aug 27, 2002

Filed:

Sep 23, 1999

Appl. No.:

09/404121

Inventors:

Daniel T. Carter - Plano TX
Regena Lee Richardson - Sachse TX
Jill R. Baumann - Wylie TX

Assignee:

Nortel Networks Limited - St. Laurent

International Classification:

H04B 7212

US Classification:

370347, 370333, 714774, 455 63, 455513

Abstract:

A system and method for quality-driven channel selection in a communication network that measures interference on idle and active voice channels in a first quality-driven channel selection (QCS) cell is disclosed. A voice channel queue is automatically ordered based on a clearest voice channel which is determined by a reverse bit error rate (RBER) measurement and a forward bit error rate (FBER) measurement on the active voice channels and by an idle noise measurement on the idle voice channels. Further, dynamic channel sets (DCS) are created from the voice channel queue based on the RBER, FBER, and idle noise received, where the DCS are queues that include low interference channels and moderate interference channels.

US Patent:

6853842, Feb 8, 2005

Filed:

Jul 31, 2000

Appl. No.:

09/629787

Inventors:

James Eric Wilson - Richardson TX, US
Jill R. Baumann - Wylie TX, US

Assignee:

Nortel Networks Limited - St. Laurent

International Classification:

H04Q007/20

US Classification:

455423, 455424, 455425, 455 6711, 455 6713, 455 6714

Abstract:

A system and method collects radio frequency isolation values with the assistance of mobile stations operating within a cellular wireless communication system. A broadcast channel and a broadcast cell/sector are first chosen. Then, the broadcast channel is disabled in neighboring (or all) other cells/sectors in the system. The base station servicing the broadcast cell/sector then transmits on the broadcast cell sector. Mobile stations operating within the system are then directed to measure and report the signal strength of the broadcast channel as well as a traffic channel servicing their ongoing calls. The mobile stations then report these signal strengths to the cellular wireless communication system. The signal strength measurements are then used to calculate cell/sector radio frequency isolation values between the broadcast cell/sector and respective servicing cell/sectors. Because the broadcast channel may be transmitted at a greater level than normal transmissions, a normalization process may be required.

US Patent:

6438376, Aug 20, 2002

Filed:

May 11, 1999

Appl. No.:

09/309543

Inventors:

Stephen B. Elliott - Allen TX
Srinivas Eswara - Carrollton TX
Jill R. Baumann - Wylie TX
Daniel Carter - Plano TX

Assignee:

Nortel Networks Limited - St. Laurant

International Classification:

H04Q 720

US Classification:

455437, 455440

Abstract:

The present invention incorporates information representing the location and movement of a mobile station in a wireless telecommunications network to manage and control hand-offs, reduce the risk of falsing, prioritize channel assignments and control the power level of channels.