Mobile location management in atm networks

Details Mobile location management in atm networks Mobile location management in atm networks

H - Electricity

04

L

H04L 12/56 (2006.01) H04Q 11/04 (2006.01) H04Q 7/36 (2006.01) H04Q 7/38 (2006.01) H04Q 7/24 (2006.01)

Patent

CA 2215533

The tracking of mobile terminals served by base stations supported by respective switches formed into respective peer groups of switches in which the peer groups are then formed into a hierarchical logical network having a prescribed number of levels of scope S, and in which individual ones of the switches serve as a home switch for respective ones of said wireless terminals is enhanced. Specifically, responsive to receiving a registration message sent by one of the wireless terminals, the receiving switch notifies the home switch associated with the sending terminal. The home switch, in turn, notes the current location of that terminal and sends a similar message to the switch serving the zone in which the sending wireless terminal was last located. The latter switch, responsive to receipt of the message sets a pointer that points to (a) the current location of the sending wireless terminal if the switch is within the scope of the current location of the sending terminal or (b) the home switch if the switch is outside of the scope of the current location of the sending terminal.

On améliore la poursuite des terminaux mobiles par des stations de base supportées par des centraux respectifs formés en groupes de centraux maillés, ces groupes maillés étant organisés en réseau logique hiérarchique avec un nombre prescrit de niveaux de rayon d'action S, et dans lesquels chaque central individuel agit comme un central d'accueil pour des terminaux sans fil respectifs. Plus précisément, réagissant à la réception d'un message d'inscription par un des terminaux sans fil, le central de réception notifie au central d'accueil associé au terminal envoyeur. Le central d'accueil, à son tour, relève l'emplacement courant de ce terminal et envoie un message analogue au central desservant la zone du dernier emplacement du terminal sans fil envoyeur. Ce dernier central, réagissant à la réception du message positionne un pointeur qui renvoie à a) l'emplacement courant du terminal sans fil envoyeur si le central est à l'intérieur du rayon d'action du terminal envoyeur à son emplacement courant, ou à b) le central d'accueil si le central est en dehors du rayon d'action du terminal envoyeur à son emplacement courant.

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