A system for surveillance and a method for the application...

Details A system for surveillance and a method for the application... A system for surveillance and a method for the application...

G - Physics

08

B

G08B 25/10 (2006.01) H04L 12/56 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2570923

A method and a system (100) for transmission of a large amount of data over a first dedicated wireless link (A) at a first frequency, such as 2,4 GHz. If the signal strength is weak, the data is further compressed. If the signal strength is further weaker, a second wireless link (B) is used at a second frequency, such as 868 MHZ. The second wireless link (B) is at the same time used as a network system for exchange of information in which the nodes of the system operates as nodes in a multi-hop system.

L'invention concerne un procédé et un système (100) de transmission d'une quantité importante de données sur une première liaison sans fil spécifique (A) à une première fréquence, telle que 2,4 GHz. Si la puissance du signal est faible, les données sont comprimées. Si la puissance du signal est encore plus faible, une seconde liaison sans fil (B) est utilisée à une seconde fréquence, telle que 868 MHZ. La seconde liaison sans fil (B) est utilisée en même temps comme un système de réseau destiné à l'échange d'informations dans lequel les noeuds du système fonctionnent comme des noeuds dans un systèmes à sauts multiples.

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