D2D communication system that use the non-licensed band to the auxiliary band and method of D2D system thereof
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United States of America Patent
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Oct 10, 2017
Grant Date -
Jul 6, 2017
app pub date -
Jul 20, 2016
filing date -
Dec 30, 2015
priority date (Note) -
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Abstract
Disclosed is a resource allocating method of a LTE-advanced based D2D communications system including a plurality of D2D terminals, the method comprising: by the D2D terminals, requesting a base station to allocate a licensed band and searching for a spectrum for usable non-licensed bands; generating a D2D communications link by using a resource of the licensed band that is allocated from the base station; calculating a signal to interference and noise ratio (SINR) of the D2D communications link; selecting at least one of resources of the searched non-licensed band when the signal to interference and noise ratio (SINR) is smaller than a threshold value; and performing D2D communications by using a resource of the selected non-licensed band.
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