Cellular Network Which Selectively Configures a Measurement Gap Based on Subcarrier Spacing

A cellular base station, comprising:

• a plurality of antennas;
• a radio operably coupled to the plurality of antennas;
• and
• a processor operably coupled to the radio;
• wherein the cellular base station is configured to:
• transmit a radio resource control message to a user equipment (UE) to modify a current radio resource control (RRC) connection of the UE with the base station, wherein the radio resource control message comprises subcarrier spacing information of one or more target bands of at least one target base station;
• receive gap information from the UE in response to transmission of the radio resource control message to the UE, wherein the gap information indicates whether a gap is needed in performing measurements on a reference signal transmitted at each of the one or more target frequency bands;
• and
• selectively assign at least one time slot to the UE for target base station reference signal measurements based on the received gap information.

A method, comprising:

• communicating with a current base station, wherein the current base station has a first subcarrier spacing (SCS) configuration;
• receiving a radio resource control message from the current base station to modify a current radio connection, wherein the radio resource control message comprises target band configuration information of one or more target bands of at least one target base station;
• determining gap information for each of the one or more target bands, wherein for each respective target band the gap information is based at least in part on an assumption that the respective target band has a SCS configuration that is the same as the first SCS configuration, wherein for each respective target frequency band the gap information indicates whether a gap is needed in performing measurements on a reference signal transmitted at the respective target frequency band;
• and
• transmitting the gap information to the current base station.