Evolved packet system fallback and voice over new radio call save techniques

Abstract

Techniques are provided for a voice over new radio techniques based on a fallback procedure. An example method can include causing a first tracking area update (TAU) request message to be transmitted to a first base station of a first network. The method can further include connecting with a second network based on performing an evolved packet system fallback (EPSFB) procedure. The method can include processing a message from the second network, the message indicating a dedicated bearer. The method can include generating a second TAU request message prior to processing a TAU accept message associated with the first TAU request, the second TAU request message to include evolved packet system (EPS) bearer information (EBI) having an indication of an Internet Protocol address for the dedicated bearer. The method can further include causing the second TAU request message to be transmitted to a second base station of the second network.

Dependencies are inferred from the claim text.