1
Eugene J Bruckert, Stuart W Thro: Method and apparatus for selecting a serving transceiver. Motorola, Richard A Sonnentag, Christopher J Reckamp, February 14, 1995: US05390339 (263 worldwide citation)

A radio communication system selects a serving transceiver for a remote unit by generating and using a center of mass location estimation. The radio communication system collects uplink and downlink signal characteristics, including impaired signals caused by co-channel interference, from a set of t ...


2
Amitava Ghosh, John Douglas Reed, Walter Joseph Rozanski Jr, Kevin Andrew Buford: Method and apparatus for location finding in a CDMA system. Motorola, Richard A Sonnentag, April 7, 1998: US05736964 (160 worldwide citation)

A method and apparatus for determining the location of a communication unit in a CDMA system includes in a first embodiment, sending a location request via a spread spectrum signal to the subscriber (140), and receiving in return a subscriber signal including a response message showing a receive tim ...


3
Fuyun Ling, Thomas A Sexton, Gene Bruckert: Method and apparatus for coherent communication reception in a spread-spectrum communication system. Motorola, Richard A Sonnentag, Kevin A Buford, April 8, 1997: US05619524 (150 worldwide citation)

A method and apparatus is provided for facilitating coherent communication reception. A received reference symbol coded spread spectrum communication signal is despread with a spreading code to derive a stream of reference samples and a stream of data samples. The channel response is estimated by ut ...


4
Eugene J Bruckert, Richard A Sonnentag: Method and apparatus for time aligning signals for reception in a code-division multiple access communication system. Motorola, Richard A Sonnentag, August 29, 1995: US05446727 (139 worldwide citation)

A coherent reverse channel, a per-chip spreading function, orthogonal spreading functions and a time alignment of all traffic channels are implemented such that the main signal of each channel arrives at a base-station within a fraction of a chip of one another in accordance with the invention. With ...


5
Fuyun Ling: Method and apparatus for coherent communication in a spread-spectrum communication system. Motorola, Richard A Sonnentag, Shawn B Dempster, July 12, 1994: US05329547 (135 worldwide citation)

A method and apparatus is provided for encoding and decoding to facilitate coherent communication. In encoding, reference symbols are inserted into a stream of input data symbols to form a reference coded stream of input data symbols. Subsequently, the reference coded stream of input data symbols ar ...


6
David Chambers, Kenneth A Gustafson, Paul Crichton, Karen E Hathaway Norman, Sue Ellen Schroeder, Dennis E Vogt: Communication system architecture and method of routing therefor. Motorola, Richard A Sonnentag, December 29, 1998: US05854982 (124 worldwide citation)

To alleviate the constraints imposed on communication system management by the assignment of dedicated ranges of MSISDNs and IMSIs to each particular home location register (HLR.sub.1, HLR.sub.2, HLR.sub.N), the present invention provides an ability to separate IMSIs and MSISDNs between HLR platform ...


7
Michael D Kotzin, Walter J Rozanski Jr: Method and apparatus for transmitting signals in a communication system. Motorola, Richard A Sonnentag, Mario J Donato Jr, March 14, 2000: US06038263 (123 worldwide citation)

Different orthogonal codes (W.sub.x, W.sub.y) are used to spread common pilot channels (Pilot.sub.A) intended for transmission to a particular mobile station (106) within a coverage area (sector A) to implement forward link transmit diversity. By implementing separate, different orthogonal codes (W. ...


8
John Douglas Reed, Walter Joseph Rozanki Jr: Method and apparatus for mitigating the effects of interference in a wireless communication system. Motorola, Richard A Sonnentag, Sayed Hossain Beladi, July 20, 1999: US05926761 (121 worldwide citation)

A wireless communication system (200) estimates (303) the location of a mobile station (215) when a degradation in the mobile station's communication occurs due to interference, and stores (305) the location estimate in a database. The database is used to determine the potential for the mobile stati ...


9
Nimrod Averbuch: Data packet alignment in a communication system. Motorola, Richard A Sonnentag, December 7, 1993: US05268933 (120 worldwide citation)

A communication system provides data packet timing alignment to facilitate soft handoff. A vocoder (315) transmits compressed voice frames to base-stations (130,131) along links (110,112) of variable length, .DELTA..sub.L. The .DELTA..sub.L translates to a delay .DELTA..sub.t in the air-frames to be ...


10
Kenneth A Felix, Alton P Werronen, Thomas B Hart, Scott A Hardman, Thomas G Hulsebosch: Radio telephone system incorporating multiple time periods for communication transfer. Motorola, Richard A Sonnentag, Raymond A Jenski, Raymond J Warren, April 13, 1993: US05203010 (117 worldwide citation)

A cellular radiotelephone system transfers a call from a source base-site (200) to one target base-site (205,210). A source base-site (200) in the first RF coverage area (100) measures the signal strength (RSSI.sub.S) of a mobile (225), provides a forecasted signal strength (RSSI.sub.F) representing ...