Abstract
When text emergency service (T911) is used over satellite, the carrier configuration may be such that the emergency text is routed to a concierge service that may be outside the country that the user equipment is in. This can result in inefficient emergency response, as there may be a delay in communications to the local public safety answering point (PSAP). This disclosure describes techniques that enable a mobile device to communicate directly with a local PSAP via satellite when terrestrial networks are unavailable. A specialized emergency packet data network (PDN) connection is established that utilizes local breakout (LBO) architecture within the visited country. The connection is anchored in the core network of the visited country. The anchor enables an Internet Protocol (IP)-based message (e.g., Short Message Service (SMS)-over-IP) to be routed directly to a local PSAP that is geographically close to the user. The emergency text message is delivered at low latency, since it is handled fully within the visited country without a concierge or other human-in-the-loop.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Mallampati, Aishwarya and Sasindran, Sooraj, "Direct-to-Local-PSAP Emergency Messaging over Satellite", Technical Disclosure Commons, ()
https://www.tdcommons.org/dpubs_series/10131