Title:
METHOD AND APPARATUS FOR ESTABLISHING DIRECT MOBILE TO MOBILE COMMUNICATION BETWEEN CELLULAR MOBILE TERMINALS
Document Type and Number:
WIPO Patent Application WO2005060503
Kind Code:
A3
Abstract:
The present invention provides a method for establishing direct mobile to mobile communication between cellular mobile terminals. The method includes selecting a frequency designated as a mobile communication frequency within a cellular communication system, and transmitting a communication initiation sequence at the selected frequency by a first mobile terminal. A second mobile terminal then monitors the designated mobile communication frequencies, and detects the communication initiation sequence. In at least one embodiment, selecting a frequency includes determining the region in which the first mobile terminal is operating, and selecting a mobile communication frequency for the determined region. In at least a further embodiment, the mobile communication frequency is a mobile transmission frequency for the determined region. In at least a still further embodiment, selecting a frequency includes selecting a frequency that is designated as a mobile transmit frequency in a first supported region and is designated as a mobile receive frequency in a second supported region.
Inventors:
BLACK GREG R (US)
BINZEL CHARLES P (US)
MEYER GEORGE W (US)
BINZEL CHARLES P (US)
MEYER GEORGE W (US)
Application Number:
PCT/US2004/039228
Publication Date:
June 29, 2006
Filing Date:
November 23, 2004
Export Citation:
Assignee:
MOTOROLA INC (US)
BLACK GREG R (US)
BINZEL CHARLES P (US)
MEYER GEORGE W (US)
BLACK GREG R (US)
BINZEL CHARLES P (US)
MEYER GEORGE W (US)
International Classes:
H04W4/10; H04W84/08; H04W84/18
Foreign References:
| US20050085253A1 | 2005-04-21 | |||
| US20040116132A1 | 2004-06-17 | |||
| US6819919B1 | 2004-11-16 | |||
| US6584090B1 | 2003-06-24 | |||
| US6208844B1 | 2001-03-27 |
Other References:
See also references of EP 1687994A4
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