Techniques for handling voice over service fallback

A method of wireless communication at a user equipment (UE), comprising:

• initiating a tracking area update (TAU) procedure when performing a change from a first cell associated with a first radio access technology (RAT) to connect to a second cell associated with a second RAT different than the first RAT;
• initiating a timer when the TAU procedure fails, the timer associated with a first duration;
• and
• re-initiating the TAU procedure based on an occurrence of a timer modification event, the re-initiating of the TAU procedure occurring before the first duration associated with the timer expires.

An apparatus for wireless communication at a user equipment (UE), comprising:

• means for initiating a tracking area update (TAU) procedure when performing a change from a first cell associated with a first radio access technology (RAT) to connect to a second cell associated with a second RAT different than the first RAT;
• means for initiating a timer when the TAU procedure fails, the timer associated with a first duration;
• and
• means for re-initiating the TAU procedure based on an occurrence of a timer modification event, the re-initiating of the TAU procedure occurring before the first duration associated with the timer expires.

A computer-readable medium storing computer executable code at a user equipment (UE), the code, when executed, causes a processor to:

• initiate a tracking area update (TAU) procedure when performing a change from a first cell associated with a first radio access technology (RAT) to connect to a second cell associated with a second RAT different than the first RAT;
• initiate a timer when the TAU procedure fails, the timer associated with a first duration;
• and
• re-initiate the TAU procedure based on an occurrence of a timer modification event, the re-initiating of the TAU procedure occurring before the first duration associated with the timer expires.