Inactive MDT log with inactive duration

A mobile wireless communication device comprising:

• a memory;
• a receiver configured to receive a release to inactive message instructing the mobile wireless communication device to enter an inactive state, the inactive state comprising connection to a network in a connection management connected (CM_Connected) state without a capability of transmitting or receiving user data between the mobile wireless communication device and the network;
• a transmitter configured to transmit a resume request to a base station while the mobile wireless communication device is in the inactive state, the resume request requesting establishment of a connected state comprising the capability to transmit and receive user data between the mobile wireless communication device and the network;
• a controller configured to log an inactive duration indicative of a duration of time from receiving the release to inactive message to the transmission of the resume request.