Radio resource allocation for D2D communications
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United States of America Patent
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Mar 14, 2017
Grant Date -
Jun 23, 2016
app pub date -
Dec 18, 2014
filing date -
Dec 18, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
Systems and methods for switching radio resource allocation for User Equipment (UE) enabled for a device-to-device (D2D) communication. One embodiment is a base station that switches resource allocation between Mode 1, Mode 2, and a transition mode. For the transition mode, one or more parameters have a value in a range between a value specified in Mode 1 and a value specified in Mode 2 for the parameter(s). The base station detects movement of the UE from in-coverage of the base station to edge-of-coverage, and initiates switching of the resource allocation for the UE from Mode 1 to the transition mode. The base station then detects movement of the UE from edge-of-coverage of the base station to out-of-coverage, and initiates switching of the radio resource allocation for the UE from the transition mode to Mode 2.
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