Patent ID: 9661653
Date: 2017-05-23
CPC Classifications: H04W

Claim:
1. A user equipment (UE) operable to perform device-to-device (D2D) communications, the UE having one or more processors configured to: identify D2D data to be transmitted from the UE using a D2D radio bearer of the UE, the D2D data being identified when the UE is in a radio resource control (RRC) idle mode; determine that the UE is limited to using a defined resource allocation mode one to communicate the D2D data from the UE; initiate a service request procedure at a non-access stratum (NAS) of the UE, the service request procedure triggering an RRC layer of the UE to perform an RRC connection establishment procedure with an evolved node B (eNB) to switch the UE from the RRC idle mode to an RRC connected mode; receive an uplink (UL) grant from the eNB for transmission of the D2D data from the UE; and send the D2D data using the UL grant provided by the eNB, the D2D data being transmitted from the UE using the D2D radio bearer of the UE.