Dual-mesh network and communication system for emergency...

Details Dual-mesh network and communication system for emergency... Dual-mesh network and communication system for emergency...

H - Electricity

04

L

H04L 12/56 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2596532

A communications system is provided for emergency services personnel that includes a plurality of portable devices (20) and a base station (12) . The portable devices are configured to be carried by emergency services personnel while at an emergency site. The portable devices each have a first transceiver (50) configured to communicate over a first network and a second transceiver (60) configured to communicate over a second network, where the first and second networks operate independent of one another. The base station (12) has at least one transceiver for communicating with the portable devices over at least one of the first and second networks. Furthermore, an emergency search procedure using that communication system is provided. Search messages are sent over the second network (610) and relayed to the target device (608) . A reply message is sent from the target device over the second network (612) .

L'invention concerne un système de communications destiné à un personnel de services d'urgence comprenant une pluralité de dispositifs portables (20) et une station de base (12). Les dispositifs portables sont configurés afin d'être portés par le personnel de services d'urgence au niveau d'un site d'urgence. Ces dispositifs portables comprennent chacun un émetteur-récepteur (50) configuré afin de communiquer sur un premier réseau et un second émetteur-récepteur (60) configuré afin de communiquer sur un second réseau, les premier et second réseaux fonctionnant indépendamment l'un de l'autre. La station de base (12) comprend au moins un émetteur-récepteur qui permet de communiquer avec les dispositifs portables sur au moins l'un des premier et second réseau. L'invention concerne également une procédure de recherche d'urgence utilisant ce système de communications. Des messages de recherche sont envoyés sur le second réseau(610) et relayés vers un dispositif cible (608). Un message de réponse est envoyé du dispositif cible sur le second réseau (612) .

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