Framework for supporting custom signaling between a wireless device and a cellular network

An apparatus, comprising:

• a processor configured to cause a user equipment (UE) to:
• establish a wireless link with a cellular network;
• determine to initiate secondary cell group (SCG) failure;
• and
• transmit, to the cellular network, custom signaling, the custom signaling including a unique signature indicating to initiate the SCG failure.

A method, comprising:

• at a cellular network:
• establishing a wireless link with a user equipment (UE);
• and
• receiving, from the UE, a message according to a first custom signaling framework, the message including:
• a physical cell identity (PCI) field with a value of 0;
• and
• a measurement results field, the measurement results field being empty.