1. A method performed at an eNodeB (eNB), the method comprising:determining that a high priority communication is pending transmission to a user equipment (UE) device;
transmitting a high priority indicator within a licensed frequency band to at least one other eNB, the high priority indicator indicating that the eNB has a high priority communication pending transmission; and
transmitting the high priority communication over the unlicensed frequency band to the UE device when it is determined that the unlicensed frequency band is not in use,
wherein the transmitting the high priority indicator comprises:
determining whether the unlicensed frequency band is in use;
transmitting the high priority indicator only if the unlicensed frequency band is in use;
determining whether another high priority indicator has been received from another eNB; and
transmitting the high priority indicator only if no other high priority indicator has been received.