Abstract
Mobile network stacks sometimes struggle to manage handovers effectively in hybrid environments where terrestrial networks (TN) and non-terrestrial networks (NTN) coexist. A mechanism that intelligently routes emergency calls (E911) on a mobile device capable of operating across heterogeneous networks such as Wi-Fi, terrestrial networks (TN), and non-terrestrial networks (NTN) can ensure a high call success rate and good voice quality. This disclosure describes techniques that evaluate real-time network states, including Wi-Fi signal quality, TN service availability (full vs. limited), and NTN voice capability, to facilitate reliable emergency communication in hybrid environments. The techniques include a proactive scanning mechanism to discover terrestrial limited service signals even when camped on a satellite connection.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Mallampati, Aishwarya; Sasindran, Sooraj; Nguyen, Dang Tu; Paul, Soumyadeep; Janakan, Karthick Musuvathi; and Rane, Pranit, "Intelligent Emergency Call Routing in Overlapping Wi-Fi, Terrestrial, and Non-Terrestrial Networks", Technical Disclosure Commons, (February 18, 2026)
https://www.tdcommons.org/dpubs_series/9339