Apparatus and method for performing radio communication

An apparatus comprising:

• a circuitry configured to
• perform radio communication;
• and
• acquire information for determining a width of a guard band in a frequency band to be used in the radio communication from an external apparatus through the radio communication,
• wherein the width is determined based on a corresponding configuration of resource blocks and a subcarrier spacing for the radio communication,
• wherein the information for determining the width of the guard band is transmitted as part of radio resource control (RRC) signaling.

A method comprising:

• performing radio communication;
• and
• performing control, by a processor, such that information for determining a width of a guard band in a frequency band to be used in the radio communication is transmitted to an external apparatus through the radio communication,
• wherein the width is determined based on a corresponding configuration of resource blocks and a subcarrier spacing for the radio communication, and
• wherein the information for determining the width of the guard band is transmitted as part of radio resource control (RRC) signaling.

A method comprising:

• performing radio communication;
• and
• acquiring, by a processor, information for determining a width of a guard band in a frequency band to be used in the radio communication from an external apparatus through the radio communication,
• wherein the width is determined based on a corresponding configuration of resource blocks and a subcarrier spacing for the radio communication, and
• wherein the information for determining the width of the guard band is transmitted as part of radio resource control (RRC) signaling.