Broadcasting system information in a wireless communication system

A radio network node configured for notifying wireless communication devices in a wireless communication system about an upcoming change of broadcasted system information, the radio network node comprising:

• radio circuitry;
• and
• processing circuitry configured to:
• broadcast current system information via the radio circuitry;
• generate a notification indicating that changed system information will be broadcasted, wherein the notification is generated to indicate how the changed system information will differ from the current system information, wherein the current system information and the changed system information each include scheduling information indicating radio resources in which different system information components are broadcasted;
• transmit the notification via the radio circuitry, wherein the notification from the radio network node enabling the wireless communication device to read one or more components of the changed system information using the scheduling information included in the current system information, in responsive to determining that the notification does not indicate that the scheduling information included in the changed system information differs from the scheduling information included in the current system information;
• and
• after transmitting the notification, broadcast the changed system information via the radio circuitry.

A method implemented by a wireless communication device configured for operation in a wireless communication system, the method comprising:

• receiving current system information broadcasted from a radio network node;
• receiving a notification indicating that the radio network node will broadcast changed system information, and indicating how the changed system information will differ from the current system information, wherein the current system information and the changed system information each include scheduling information indicating radio resources in which different system information components are broadcasted;
• determining, based on the notification, an extent to which the wireless communication device will read the changed system information when broadcasted;
• selectively reading the changed system information to the determined extent;
• and
• in responsive to determining that the notification does not indicate that the scheduling information included in the changed system information differs from the scheduling information included in the current system information, reading one or more components of the changed system information using the scheduling information included in the current system information.