System information updates in LTE

摘要

An apparatus for receiving system information updates includes a wireless transmit receive unit (WTRU) configured to receive a system frame number. The WTRU is also configured to receive system information messages in a modification period. The modification period has a boundary determined by the system frame number. The WTRU is configured to receive system information change notification after a first modification change boundary and determines that the system information is valid until a second modification change boundary.