Multi-Network Terminal-Proximity Discovery Using Joint Spectrum
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United States of America Patent
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Issued Date -
Aug 21, 2014
app pub date -
Feb 19, 2014
filing date -
Feb 20, 2013
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Abstract
A first mobile communication device is communicatively connected to a first network for receiving a first communication service in a first geographic area and in a first frequency-band. A second mobile communication device is communicatively connected to a second network, different from the first network, for receiving a second communication service in a second geographic area and in a second frequency-band. The first device is transmitting, in a third frequency-band disjoint from the first and second frequency-bands, a first identifier and a first location of the first device. The second network monitors the third frequency-band and receives the information in the transmission. Under control of the first identifier, a database is consulted for determining if the first device is listed as associated with the second device. If so, a second location of the second device is determined and a spatial proximity is determined between the first and second devices based on the first and second locations, enabling the first device and the second device to set up a device-to-device communication session.
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