Medium access control (MAC) signaling for reference signal activation and quasi co-location indication in wireless communication networks

A radio network node adapted to:

• generate a medium access control (MAC) message comprising a first field indicating whether a second field is present, or absent, in the MAC message, the second field identifying one or more resource sets among a plurality of resource sets which are to be activated or deactivated, and a third field comprising quasi co-location, (QCL) information;
• transmit the generated MAC message to a wireless device.

A method in a wireless device, the method comprising:

• receiving a medium access control (MAC) message from a radio network node;
• decoding the received MAC message, the MAC message comprising a first field indicating whether a second field is present, or absent, in the MAC message, the second field identifying one or more resource sets among a plurality of resource sets which are to be activated or deactivated, and a third field comprising quasi co-location (QCL) information.

A wireless device adapted to:

• receive a medium access control (MAC) message from a radio network node;
• decode the received MAC message, the MAC message comprising a first field indicating whether a second field is present, or absent, in the MAC message, the second field identifying one or more resource sets among a plurality of resource sets which are to be activated or deactivated, and a third field comprising quasi co-location (QCL) information.