(12) United States Patent ao) Patent No.: us 6,907,019 B2
Kotzin et al. (45) Date of Patent: Jun. 14,2005
(54) COMMUNICATION CONTROLLER AND
METHOD FOR MANAGING THE TRAFFIC
FLOW OF A COMMUNICATION
CONNECTION DURING A CELL
(75) Inventors: Michael D. Kotzin, Buffalo Grove, IL
(US); Charles P. Binzel, Bristol, WI
(US); Mark E. Pecen, Palatine, IL
(US); Stephen L. Spear, Skokie, IL
(73) Assignee: Motorola Inc., Schaumburg, IL (US)
( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 101 days.
(21) Appl. No.: 10/647,776
(22) Filed: Aug. 25, 2003
(65) Prior Publication Data
US 2005/0047370 Al Mar. 3, 2005
(51) Int. C I. II04Q 7/00
(52) U.S. CI 370/332; 455/442
(58) Field of Search 370/329-333,
(56) References Cited
U.S. PATENT DOCUMENTS
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6,374,112 Bl * 4/2002 Widegren et al 455/452.2
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6,594,238 Bl * 7/2003 Wallentin et al 370/252
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2002/0118662 Al 8/2002 Sheynman et al.
2003/0092445 Al 5/2003 Timonen et al.
FOREIGN PATENT DOCUMENTS
WO WO 01/76162 Al 10/2001
The present invention provides a method for managing in a mobile subscriber the traffic flow of a communication connection during a cell reselection. The method includes communicating via a communication connection with a first cell, and monitoring communication conditions, while communicating with the first cell. An approximate time is then determined, when conditions associated with the flow of communication via the communication connection with the first cell is consistent with transferring the flow of communication to a communication connection with a second cell. The mobile subscriber then establishes a communication connection with the second cell, while maintaining the communication connection with the first cell. The method further includes routing the flow of the communication from the communication connection with the first cell to the communication connection with the second cell, and releasing by the mobile subscriber the communication connection with the first cell, proximate the time that the flow of communication is routed from the communication connection with the first cell to the communication connection with the second cell.
32 Claims, 4 Drawing Sheets