Universal personal communication system and tracing system...

H - Electricity – 04 – B

Patent

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Details

H04B 7/26 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2127273

A communication system (100) includes a plurality of organizational layers (102, 104, 106, 108, 110), a plurality of portable communication units (20, 22, 24), and a plurality of base stations (112). Each layer comprises a plurality of nodes. The plurality of nodes includes a plurality of base stations (112) in the first layer, and a plurality of communication services nodes organized into higher layers (102, 104, 106, 108, 110). Each communication services node includes a database possibly containing information on the locations of one or more portable communication units (24). The databases constitute a distributed database containing information on the locations of some of the portable communication units (24) within the system (100), and a tracing strategy is realized by the transmission of control messages (306) informing the system of a moving portable communication unit's (24) location. The system tries to set up a connection (120) to the home address of the called portable communication unit. If there is information on the called unit (24), its location is indicated by the address chain (138) in the distributed database.

Un système de communications (100) comprend une multiplicité de niveaux d'organisation (102, 104, 106, 108, 110), une multiplicité d'unités de communications portatives (20, 22, 24), et une multiplicité de stations fixes (112). Chaque niveau comprend une multiplicité de noeuds. Cette multiplicité de noeuds comprend une multiplicité de stations fixes (112) dans le premier niveau, et une multiplicité de noeuds de services de communications organisés dans des plus hauts niveaux (102, 104, 106, 108, 110). Chaque noeud de service de communications comprend une base de données contenant éventuellement des informations concernant les emplacements d'une ou de plusieurs unités de communications portatives (24). Les bases de données constituent une base de données répartie contenant des informations sur les emplacements de certaines des unités de communications portatives (24) dans le système (100), et une stratégie de recherche est appliquée par la transmission de messages de commande (306) avisant le système de l'emplacement d'une unité de communication portative (24). Le système tente d'établir une connexion (120) avec l'adresse de domicile de l'unité portative appelée. Si des informations sont présentes sur l'unité appelée (24) son emplacement est indiqué par la chaîne d'adresses (138) se trouvant dans la base de données répartie.

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