1
J Michael Watters, Leo Strawczynski, David G Steer: Combining GPS with TOA/TDOA of cellular signals to locate terminal. Nortel Networks Corporation, Foley & Lardner, November 9, 1999: US05982324 (336 worldwide citation)

Aspects of global positioning system (GPS) technology and cellular technology are combined in order to provide an effective and efficient position location system. In a first aspect of the invention, a cellular network is utilized to collect differential GPS error correction data, which is forwarded ...


2
Leo Strawczynski, Bill W A Gage, Rafi Rabipour: Telecommunication network utilizing a quality of service protocol. Nortel Networks Corporation, March 14, 2000: US06038452 (195 worldwide citation)

The present invention provides novel systems and methods for improving the voice quality of wireless-to-wireless calls or wireless-to-fixed terminal calls. This disclosure describes methods and apparatuses to determine and control the quality of service objectives in a telecommunication network invo ...


3
Shiquan Wu, Wen Tong, Leo Strawczynski: Adaptive time diversity and spatial diversity for OFDM. Nortel Networks, Mintz Levin Cohn Ferris Glovsky & Popeo P C, January 10, 2006: US06985434 (190 worldwide citation)

An adaptable orthogonal frequency-division multiplexing system (OFDM) that uses a multiple input multiple output (MIMO) to having OFDM signals transmitted either in accordance with time diversity to reducing signal fading or in accordance with spatial diversity to increase the data rate. Sub-carrier ...


4
Ahmad Jalali, Leo Strawczynski: Fast forward link power control in a code division multiple access system. Nortel Networks, John D Crane, November 28, 2000: US06154659 (140 worldwide citation)

The radiotelephone demodulates the information received from the base station. The symbol-energy-to-noise-density (E.sub.s /N.sub.o) is estimated over a specified duration. This estimate is compared to a target E.sub.s /N.sub.o value. The target is updated periodically in order to maintain the quali ...


5
J Michael Watters, Leo Strawczynski, David G Steer: GPS and cellular system interworking. Nortel Networks, Foley & Lardner, June 19, 2001: US06249245 (125 worldwide citation)

Aspects of global positioning system (GPS) technology and cellular technology are combined in order to provide an effective and efficient position location system. In a first aspect of the invention, a cellular network is utilized to collect differential GPS error correction data, which is forwarded ...


6
J Michael Watters, Leo Strawczynski, David Steer: Devices and processing in a mobile radio communication network having calibration terminals. Nortel Networks, Dennis R Haszko, May 8, 2001: US06230018 (121 worldwide citation)

In a mobile communication network, the accuracy of location determinations for mobiles based on TDOA measurements made by the mobiles is increased by measuring the TDOA of signals from base station pairs at a known location and generating correction factors for compensating timing and propagation er ...


7
Leo Strawczynski, Howard M Sandler, Gregory L Plett, David G Steer: Intra-cell call hand-over in radio communication systems with dynamic channel allocation. Northern Telecom, Jean Pierre Fortin, August 24, 1993: US05239676 (87 worldwide citation)

The intra-cell call hand-over technique of this invention is characterized by the use of channel information from both base station and subscriber terminal in determining a standby radio traffic channel upon which to hand over a call. Communication between the base station and subscriber terminal is ...


8
Paul Coverdale, Leo Strawczynski: Unidirectional streaming services in wireless systems. Nortel Networks, Jeff Measures, April 16, 2002: US06373842 (80 worldwide citation)

A high layer protocol organizes Unidirectional Streaming Services (USS) data into frames and said data is transmitted to the wireless user's terminal. The USS data is not delivered until a criteria is satisfied, e.g., the receive buffer is filled to an appropriate value. After the USS data is r ...


9
Ning Guo, Leo Strawczynski: System for providing stream based and packet based services. Nortel Networks, Jeff Measures, May 14, 2002: US06389034 (72 worldwide citation)

This invention proposes a novel common packet data channel (CPDC) system structure and method to efficiently provide variable-rate packet data services in CDMA system. This system uses common code channels to serve packet data calls for a plurality of packet data users within a cell or sector. On th ...


10
J Michael Watters, Leo Strawczynski, David G Steer: Cellular terminal location using GPS signals in the cellular band. Nortel Networks, Foley & Lardner, May 22, 2001: US06236359 (54 worldwide citation)

Aspects of global positioning system (GPS) technology and cellular technology are combined in order to provide an effective and efficient position location system. In a first aspect of the invention, a cellular network is utilized to collect differential GPS error correction data, which is forwarded ...