Method to Locate Survivors Post-Hazard Using Their Cellular Devices


Available for Licensing

IP Status

Copyright / Software


Alaa Alsaeedy
Edwin Chong

At A Glance

​Researchers at Colorado State University have developed a method to find and locate potential disaster victims by locating their cellular devices without heir explicit help, utilizing reference signal received power (RSRP) inherent to these devices, accessible with limited or absent wireless coverage available.

Methods and algorithms are proprietary.  Please contact our office for more details.

Licensing Director

Tech Mgr: TBD

Reference No.:  2020-066


​The commercial cellular networks play vital role in the effectiveness of life rescue operations after disasters strike, enabling first response agencies to exchange information during emergency situations and hence prioritize their operations to save lives and manage the available resources. Essentially, disaster victims can use their cellular mobile device (also called user equipment (UE)) for video streaming, making texts/calls, and even location sharing wherever they are located in disaster-impacted areas. However, the infrastructure of these networks can be devastated partially or completely by natural disasters (or attacks). Additionally, survivors might be unable to use their UEs for telecommunication after a disaster due to injuries or unconsciousness.  In this case, the cellular coverage becomes very limited or no longer available, leaving both the disaster victims and first responders isolated and unreachable.

Last updated: April 2022

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