E711 - A public emergency wireless phone system

This paper introduces the conceptual design of a new information technology integrating wireless telephony and Internet services to assist in locating lost or displaced people in a moment of crisis. This public safety service is based on a novel text messaging mobile-phone emergency service called "E711" which informs that the caller is safe and well. The proposed E711 messages are delivered as guaranteed SMS packets to a centralized web emergency registry operated by a public safety organization. Finding the whereabouts of a victim could be done by consulting the entries of this registry. The public could access the emergency database in a variety of ways including Internet searches and phone calls. Optionally, non-guarantee E711 SMS messages are forwarded to family and friends. We provide an algorithm to automatically recognize critical flow changes of E711 packets and dynamically adapt congested network gateways for optimum delivery. We argue that in case of high network traffic, the E711 system has a better chance of success than voice services such as E911 or person-to-person communication.Facultad de Informátic

Two complementary mobile technologies for disaster risk reduction through warning

Disaster risk reduction is a core function of government. It is possible to significantly improve this government function using mobile application and leveraging the explosive diffusion of the technology even among the poor in developing countries. Coordination within government, including communication to first responders responsible for evacuation and localized warnings, and communication to mass media who serve a critical function in public warning, can be achieved through the use of an SMS engine supplemented as necessary by an informative and robust website. Cell broadcasting can serve as an extremely useful addition to the conventional public warning methods, especially in countries with significant mobile penetration

E711 - A public emergency wireless phone system

This paper introduces the conceptual design of a new information technology integrating wireless telephony and Internet services to assist in locating lost or displaced people in a moment of crisis. This public safety service is based on a novel text messaging mobile-phone emergency service called "E711" which informs that the caller is safe and well. The proposed E711 messages are delivered as guaranteed SMS packets to a centralized web emergency registry operated by a public safety organization. Finding the whereabouts of a victim could be done by consulting the entries of this registry. The public could access the emergency database in a variety of ways including Internet searches and phone calls. Optionally, non-guarantee E711 SMS messages are forwarded to family and friends. We provide an algorithm to automatically recognize critical flow changes of E711 packets and dynamically adapt congested network gateways for optimum delivery. We argue that in case of high network traffic, the E711 system has a better chance of success than voice services such as E911 or person-to-person communication.Facultad de Informátic

Policy-based Congestion Management for an SMS Gateway

We present a policy-based approach to managing congestions in Short Message Service (SMS) systems. Congestion situations typically occur on SMS Gateways (SMSGs), which route SMS messages between different networks and domains. In our architecture, an SMS operator can dynamically define the maximum acceptable loss of messages of a nonguaranteed SMS service class, thereby controlling the trade-off between minimal message loss and maximum throughput in an SMS system. We present the functional architecture of a manageable SMSG and discuss the realization of the Policy Decision Point (PDP), which applies the congestion policy on the SMSG. An implementation of our architecture on a commercial SMSG, the EMG, is underway. 1