  Disaster scenarios can disconnect entire cities from the core network (CN),
isolating base stations (BSs) and disrupting the Internet connection of app
services for many users. Such a disruption is particularly disastrous when it
affects critical app services such as communication, information, and
navigation. Deploying local app servers at the network edge can solve this
issue but leaves mobile network operators (MNOs) faced with design decisions
regarding the criticality of traffic flows, the BS topology, and the app server
deployment. We present the Crisis and Resilience Evaluation Tool (CARET) for
crisis-mode radio access networks RANs, enabling MNOs to make informed
decisions about a city's RAN configuration based on real-world data of the
NetMob23 dataset.
