Resolving colliding signals

A wireless device operable in a cellular communications network, the wireless

• device comprising:
• a transceiver;
• a processor in communication with the transceiver;
• and
• memory storing instructions executable by the processor to cause the wireless device is operable to:
• obtain an indicator that is indicative of whether reserved Resource Elements, REs, are present in a subframe in which a physical downlink channel transmission is transmitted from a radio access node to the wireless device;
• determine whether reserved REs are present in the subframe based on the indicator;
• and upon determining that reserved REs are present in the subframe, attempt reception of the physical downlink channel transmission based on an assumption that reserved REs are present in the subframe.

A radio access node operable in a cellular communications network, the radio access node comprising:

• a transceiver;
• a processor in communication with the transceiver;
• and
• memory storing instructions executable by the processor to cause the radio access node to perform operations comprising:
• transmitting a downlink transmission to a wireless device using one or more Physical Resource Blocks (PRBs) that comprise reserved Resource Elements (REs) by first mapping the downlink transmission to REs in the one or more PRBs and then mapping reference symbols to a subset of the REs in the one or more PRBs that are the reserved REs such that the downlink transmission is punctured by the reference symbols at positions of the reserved REs, the downlink transmission being a physical downlink channel transmission.