Brian D Bolliger

US Patent:

52788920, Jan 11, 1994

Filed:

Jan 21, 1993

Appl. No.:

8/007034

Inventors:

Brian D. Bolliger - Winfield IL
Talmage P. Bursh - South Orange NJ
Kelvin K. Ho - Somerset NJ
Alan S. Mulberg - Boulder CO
LaJeana N. Roberts - Bedminster NJ
Kenneth F. Smolik - Naperville IL
Douglas A. Spencer - Boulder CO
Kenneth W. Strom - Naperville IL
John S. Thompson - Boulder CO

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

H04M 1100
H04M 700
H04J 400
H04Q 1104

US Classification:

379 60

Abstract:

A CDMA cellular radio-telephone system (FIG. 2) comprises a packet-switched communications network (202, 207, 201) that interconnects cells (base stations; 202) with each other and with the public telephone network (100). A unique combination of a static addressing plan that uses a different LAPD DLCI (302 in FIG. 7) for each unidirectional virtual call path, direct cell (202)-to-cell and cell-to-call-processing unit (264 in FIG. 5) control information exchanges, and packet-switching techniques that permit call traffic and control communications to share call paths and permit different call paths to share physical resources, is applied to call processing. This enables soft handoffs (FIGS. 27-29) to be handled in a manner transparent to the parties to the call and without significant involvement of system control elements (134 and 261 in FIG. 2) whose involvement would adversely impact the system's call-handling capacity.

US Patent:

51950901, Mar 16, 1993

Filed:

Jul 9, 1991

Appl. No.:

7/727498

Inventors:

Brian D. Bolliger - Winfield IL
Talmage P. Bursh - South Orange NJ
Marc K. Dennison - Berkeley Heights NJ
Michael J. English - Aurora CO
Charles Y. Farwell - Denver CO
Michel L. Hearn - Broomfield CO
Richard M. Heidebrecht - Boulder CO
Kelvin K. Ho - Somerset NJ
Kenneth Y. Ho - Syosset NY
David M. Kissel - Boulder CO
Paul E. Miller - Northglenn CO
Richard D. Miller - Northglenn CO
Alan S. Mulberg - Boulder CO
LaJeana N. Roberts - Bedminster NJ
Michael A. Smith - Westminster CO
Kenneth F. Smolik - Naperville IL
Douglas A. Spencer - Boulder CO
Kenneth W. Strom - Naperville IL
John S. Thompson - Boulder CO
Richard A. Windhausen - Westminster CO

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

H04J 302

US Classification:

370 941

Abstract:

A wireless-access communications system, such as a CDMA cellular radio-telephone system (FIG. 2), comprises a packet-switched communications network (202, 207, 201) that interconnects cells (base stations; 202) with each other and with the public telephone network (100). Traffic of individual calls is packetized, and packet-bearing frames (300 in FIG. 7) of a plurality of calls are then statistically multiplexed and frame-relayed through the network to yield the high capacity, efficiency, and speed of traffic transport and handoff required for a CDMA cellular system. At each call processing unit (264 in FIG. 5), individual calls are handled by individual service circuits (602 and 612) which perform speech-processing functions such as coding and decoding, tone insertion, and echo cancellation, and packet-to-circuit-switched-PCM traffic conversion. Processors (602) adapt call processing unit timing to compensate for asynchrony between cells and call processing units and variations in call path transmission delays. Cell-to-cell communications, fixed call path addressing, and packetized control message transfers ensure that the same service circuit handles a call through even multiple soft handoffs (FIGS.

US Patent:

52260712, Jul 6, 1993

Filed:

Dec 18, 1990

Appl. No.:

7/629522

Inventors:

Brian D. Bolliger - Winfield IL
Charalambos G. Constantinides - Chicago IL
Steven L. Stevens - Lisle IL

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

H04M 1100

US Classification:

379 60

Abstract:

A wireless telecommunications system where call path resources are allocated in an orderly manner by queuing call requests during, for example, radio channel unavailability, and assigning radio channels to queued call requests as they become available. To accomodate movement of the mobile station within the service area, a plurality of queues are provided for different locations and a call request is sequentially placed in different queues as the mobile station moves. The system is usable for both incoming and outgoing calls.

US Patent:

59696796, Oct 19, 1999

Filed:

Jun 30, 1998

Appl. No.:

9/108336

Inventors:

Brian David Bolliger - Naperville IL
Jeffrey Ross Light - Lincolnwood IL
Mark Kevin Stockert - Winfield IL
Charles Varvaro - Glendale Heights IL

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G01S 302

US Classification:

342464

Abstract:

A method and apparatus for determining whether a wireless station is operating within a prescribed geographic location. During an initialization process, the wireless telephone measures propagation delays of pilot signals from nearby base stations and stores the propagation delays in a non-volatile memory of the wireless station. Thereafter, during a check process, the wireless station measures propagation delays of pilot signals from nearby base stations and compares them with the stored propagation delays stored in memory. If the difference between the two sets of propagation delays are within a predetermined tolerance, then a determination is made that the wireless station is operating within the prescribed geographic location. Multiple sets of propagation delays may be stored in memory such that a determination can be made as to whether the mobile station is operating within any one of a number of prescribed geographic locations.