User equipment, scheduling node, method for user equipment, and method for scheduling node

A method for a user equipment (UE), the method comprising the steps of:

• detecting, while in a procedure for transmitting first data in an inactive state, that second data are to be transmitted in the inactive state;
• determining whether or not there is a transmission opportunity to wait for, wherein the transmission opportunity to wait for is:
• a transmission opportunity for transmitting at least part of the first data, and
• expected to occur as part of the procedure for transmitting the first data;
• when it is determined that there is no transmission opportunity to wait for or the transmission opportunity to wait for is no longer expected to occur, initiating a random access channel (RACH) procedure for entering a connected state;
• and
• when it is determined that there is the transmission opportunity to wait for and the transmission opportunity occurs, transmitting, using the transmission opportunity, a traffic indication indicating the detection of the second data, wherein
• the traffic indication is signaled by a predefined value of a logical channel ID (LCID) in a MAC subheader, wherein
• the predefined value of the LCID indicates that the second data have been detected.

A scheduling device, comprising:

• a transceiver;
• and
• circuitry which, in operation:
• controls the transceiver to receive, from a user equipment (UE), in an inactive state, a transmission including first data;
• and
• obtains, from the transmission including the first data, a traffic indication indicating the detection, by the UE, of second data, wherein
• the second data are data to be transmitted by the UE in the inactive state,
• the traffic indication is signaled by a predefined value of a logical channel ID (LCID) in a MAC subheader, and
• the predefined value of the LCID indicates that the second data have been detected.