Method, apparatus, user equipment and base station for implementing location area update

An apparatus for implementing a location area update, applied to a user equipment in an inactive state, the apparatus comprising:

• a processor;
• and
• a memory for storing instructions executable by the processor, wherein
• the processor is configured to:
• obtain a judgement result by determining whether there is data to be transmitted currently, when a radio access network-based location area update (RLAU) is triggered, wherein the data to be transmitted is one of service data and signaling data;
• based on the judgment result and a first message, determine a second message, wherein the first message is an original connection resume request message, and the second message carries a cause value requesting for resuming connection;
• and
• transmit the second message to a base station.