Patent ID: 8594671

Claim:
A power-saving method of handling a minimization of drive, hereafter called MDT, including a MDT timer for a mobile device when the mobile device finishes an inter-RAT procedure, the method comprising: receiving a MDT measurement configuration from a first radio access technology (RAT); starting the MDT a timer corresponding to a timer value included in the MDT measurement configuration when the mobile device receives the MDT measurement configuration; and keeping the MDT timer running when the mobile device finishes the inter-RAT procedure and moves from the first RAT to a second RAT; wherein the MDT measurement configuration comprises an IdleLoggingConfiguration message or a MDT LOGGING CONFIGURATION message, and the MDT timer is a timer T 326 and the first RAT is a Universal Terrestrial Radio Access Network, hereafter called UTRAN, or the MDT timer is a timer T 330 and the first RAT is an Evolved UTRAN, hereafter called EUTRAN.