APPARATUS, METHOD AND COMPUTER PROGRAMME Russian patent published in 2022 - IPC H04W76/19 H04W76/27 

FIELD: computer technology.

SUBSTANCE: invention relates to tools for invoking a service request procedure. In response to receiving a return indication from the radio resource control layer, the fact that the specified apparatus does not have a pending non-access stratum procedure, or that the specified apparatus has a pending non-access stratum procedure different from the service request procedure, is determined. The service request procedure is invoked based on said determination. The information element of the service type is established in the message with a service request depending on said determination.

EFFECT: ensured invoking of the service request procedure or registration procedure when receiving a return indication from the radio resource control level.

20 cl, 16 dwg