Scott Duy Tran

US Patent:

6826402, Nov 30, 2004

Filed:

Feb 20, 2001

Appl. No.:

09/788973

Inventors:

Scott Tran - Plano TX

Assignee:

Nortel Networks Limited - St. Laurent

International Classification:

H04Q 720

US Classification:

455438, 455436, 455437, 455439, 455440, 455442, 4554321, 370331, 370332

Abstract:

A method for providing wireless communications system providers to adjust when soft and hard handoffs occur relative to the signal strengths of surrounding antennae. This is achieved by providing two sets of parameters. The first set of parameters is used to adjust either hard or soft handoffs, and the second set of parameters are added as an offset to the first set of parameters to adjust the other handoff, thereby, allowing the wireless communications system providers system to adjust soft and hard handoffs independently.

US Patent:

8433333, Apr 30, 2013

Filed:

May 27, 2010

Appl. No.:

12/789253

Inventors:

Scott Tran - Plano TX, US
Michael Woodmansee - Plano TX, US
Gordon Edwards - Red Deer, CA
Kashif Hussain - Murphy TX, US
Martin Kendall - Wylie TX, US
Miroslav Budic - Murphy TX, US
Yves Choiniere - Calgary, CA

Assignee:

Telefonaktiebolaget L M Ericsson (publ) - Stockholm

International Classification:

H04W 24/00
H04W 4/00
H04W 36/00

US Classification:

455453, 455434, 455436, 455421, 370331, 370338

Abstract:

A radio network controller of a wireless telecommunications network having an umbrella cell base station for an umbrella cell and capacity cell base stations for capacity cells within the umbrella cell includes a network interface from which a message is sent to the umbrella base station of the umbrella cell to search for capacity cells within the umbrella cell to redirect traffic of an AT from the umbrella cell to at least one of the capacity cells, and at which eligible capacity cells to which traffic of the AT can be redirected is received. The controller includes a processing unit which selects target capacity cells from the eligible capacity cells to which traffic of the AT will be redirected. A method for a radio network controller of a wireless telecommunications network having an umbrella cell base station for an umbrella cell and capacity cell base stations for capacity cells within the umbrella cell.

US Patent:

20020077149, Jun 20, 2002

Filed:

Dec 15, 2000

Appl. No.:

09/738204

Inventors:

Scott Tran - Plano TX, US
Farhad Bassirat - Plano TX, US
Martin Kendall - Wylie TX, US

International Classification:

H04Q007/20

US Classification:

455/560000, 455/422000, 455/446000, 455/507000, 455/524000

Abstract:

A wireless communication system infrastructure services wireless communications within a service coverage area. A digital enclosure includes a plurality of wireless communication processing components that perform digital processing functions. A plurality of radio enclosures couple to the digital enclosure via communication links and each service wireless communications within a corresponding geographic area of the service coverage area. During operation of the wireless communication system infrastructure, two radio enclosures of the plurality of radio enclosures share a communication processing component of the digital enclosure while jointly servicing a single wireless communication. The two radio enclosures reside at respective geographic locations that are separated by a geographic distance such that each of the radio enclosures services a respective cell. Each of the radio enclosures may service a plurality of sectors that form the cell. The digital enclosure couples to a base station controller, which in turn couples to a mobile switching center and, in some embodiments, to the Internet. Further, the mobile switching center couples to the public switched telephone network. During handoff of the wireless communication in a CDMA system from a first cell to a second cell, a core of the digital enclosure couples a channel element to a plurality of radio enclosures, each of which services a cell/sector(s) participating in the handoff. In one handoff operation in which six-way handoff is performed, the core couples a channel element of the digital enclosure to three radio modules, each of which services two sectors participating in the handoff.