Techniques for broadcasting emergency information to unmanned aerial vehicles in a wireless communication system

A method for wireless communication at a base station, comprising:

• receiving, from a network node, emergency instructions for unmanned aerial vehicles;
• transmitting, to an aerial user equipment (UE), a downlink control information message indicating availability of a broadcast message carrying emergency information;
• and
• transmitting, to one or more aerial UEs, the broadcast message comprising an indicator identifying that the emergency information is for the unmanned aerial vehicles, the emergency information indicating the emergency instructions, wherein the broadcast message further comprises an indication of a geodetic 2D area or a geodetic 3D volume to enable the UE to determine whether the aerial UE is inside the geodetic 2D area or the geodetic 3D volume and to ignore the broadcast message if the aerial UE is determined to be not inside the geodetic 2D area or the geodetic 3D volume.

An apparatus for wireless communication at an aerial user equipment (UE), comprising:

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• receive, from a base station of a cellular radio access network, a downlink control information message indicating availability of a broadcast message carrying emergency information;
• receive the broadcast message, the broadcast message comprising an indicator identifying that the emergency information is for unmanned aerial vehicles, wherein the broadcast message further comprises an indication of a geodetic 2D area or a geodetic 3D volume;
• determine whether the aerial UE is inside the geodetic 2D area or the geodetic 3D volume;
• ignore the broadcast message if the aerial UE is determined to be not inside the geodetic 2D area or the geodetic 3D volume;
• decode the emergency information to obtain emergency instructions based at least in part on the indicator identifying that the emergency information is for unmanned aerial vehicles;
• and
• perform one or more actions for unmanned aerial vehicles based at least in part on the emergency instructions.

An apparatus for wireless communication at a base station, comprising:

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• receive, from a network node, emergency instructions for unmanned aerial vehicles;
• transmit, to an aerial user equipment (UE), a downlink control information message indicating availability of a broadcast message carrying emergency information;
• and
• transmit, to one or more aerial UEs, the broadcast message comprising an indicator identifying that the emergency information is for the unmanned aerial vehicles, the emergency information indicating the emergency instructions, wherein the broadcast message further comprises an indication of a geodetic 2D area or a geodetic 3D volume to enable the UE to determine whether the aerial UE is inside the geodetic 2D area or the geodetic 3D volume and to ignore the broadcast message if the aerial UE is determined to be not inside the geodetic 2D area or the geodetic 3D volume.