1
Siavash Alamouti, Eduardo F Casas, Michael Hirano, Elliott Hoole, Mary Jesse, David G Michelson, Patrick Poon, Gregory J Veintimilla, Hongliang Zhang: Method for frequency division duplex communications. AT&T Wireless Services, August 3, 1999: US05933421 (403 worldwide citation)

The high quality PCS communications are enabled in environments where adjacent PCS service bands operate with out-of-band harmonics that would otherwise interfere with the system's operation. The highly bandwidth-efficient communications method combines a form of time division duplex (TDD), frequenc ...


2
Michael Buhrmann, Jane Elizabeth Montemayor: Method and apparatus for providing telecommunication services based on a subscriber profile updated by a personal information manager. AT&T Wireless Services, August 3, 1999: US05933778 (299 worldwide citation)

A subscriber enters personal information data into a personal information manager (PIM). The PIM, either automatically, or based on additional profile requests entered by the subscriber, generates profile update data associated with the personal information data. The PIM transmits the profile update ...


3
Michael Buhrmann, Jane Elizabeth Montemayor: Personal information manager for updating a telecommunication subscriber profile. AT&T Wireless Services, May 11, 1999: US05903845 (271 worldwide citation)

A subscriber enters personal information data into a personal information manager (PIM). The PIM, either automatically, or based on additional profile requests entered by the subscriber, generates profile update data associated with the personal information data. The PIM transmits the profile update ...


4
Ronald S Barchi: E-mail usage pattern detection. AT&T Wireless Services, Kenyon & Kenyon, January 14, 2003: US06507866 (256 worldwide citation)

A method and apparatus for identifying undesired e-mail messages by receiving e-mail messages, storing fields from the headers of the received e-mail messages and analyzing the stored fields for patterns indicative of undesired e-mail messages. The pattern recognition performed includes counting the ...


5
Armin Roeseler, Yuming Huang: Method and apparatus for navigation using a portable communication device. AT&T Wireless Services, Oliff & Berridge, November 13, 2001: US06317684 (232 worldwide citation)

The invention provides an apparatus and method for route planning and navigation using a portable communication device. A route planning and navigation unit receives a route request from a caller. The route planning and navigation unit checks the latest traffic/road condition data, long term map dat ...


6
Siavash Alamouti, Vahid Tarokh: Transmitter diversity technique for wireless communications. AT&T Wireless Services, February 6, 2001: US06185258 (202 worldwide citation)

A simple block coding arrangement is created with symbols transmitted over a plurality of transmit channels, in connection with coding that comprises only of simple arithmetic operations, such as negation and conjugation. The diversity created by the transmitter utilizes space diversity and either t ...


7
Alan Denis MacDonald: Method and apparatus for determining the location of a mobile telephone. AT&T Wireless Services, Jeffrey M Weinick, March 24, 1998: US05732354 (202 worldwide citation)

A method and apparatus for determining the location of a mobile telephone within the serving area of a mobile telephone system are disclosed. A mobile switching center analyzes the calling mobile telephone number and called telephone number to determine if a location function is required. Upon initi ...


8
Nicolas Kauser, Alan Denis MacDonald: Method and apparatus for locating a mobile station by comparing calculated location area with GPS coordinates. AT&T Wireless Services, March 3, 1998: US05724660 (200 worldwide citation)

A method and apparatus for determining the location of a mobile telephone within the serving area of a mobile telephone system. A mobile switching center analyzes the calling mobile telephone number and called telephone number to determine if a location function is required. Upon initiation of the l ...


9
Brian Kevin Daly: Method and apparatus for over-the-air programming of telecommunication services. AT&T Wireless Services, September 19, 2000: US06122503 (194 worldwide citation)

A method for updating service information stored in a mobile station relies on the programmability of the station and over-the-air transmission of teleservice information. When a station is inactive, a delivery flag is set when the station subsequently registers the over-the-air transmission is perf ...


10
David Chi Yin Chan: Packet data transmission using dynamic channel assignment. AT&T Wireless Services, August 4, 1998: US05790551 (186 worldwide citation)

A method for transmitting packetized data in a cellular communication system uses a dynamic channel assignment scheme. In this aspect of the invention a data control channel is used in addition to the data traffic channel. The mobile end system uses the data control channel to send a request for ass ...



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