A registration method in a cellular mobile radio system

H - Electricity – 04 – Q

Patent

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Details

H04Q 7/38 (2006.01)

Patent

CA 2147745

The present invention relates to a method of registering a mobile station in a cellular mobile radio system in which cells or service areas, each including a plurality of cells, form registration areas. Each registration area has its own identity. According to the proposed method, individual location areas are formed for one or more mobile stations with the intention of avoiding an unnecessarily high number of registrations in border areas of the different registration areas. A location area may have the form of a list which is stored in a mobile station, or may be stored in the system and transmitted to the mobile station via a base station in a given registration area, in conjunction with registration of the mobile station in this area. A new registration made only if the mobile station enters a service area that belongs to a registration area whose identity is not found on the stored listed identities.

L'invention concerne un procédé d'enregistrement d'une station mobile dans un système radio cellulaire mobile dans lequel les cellules ou les zones de desserte comprenant chacune une pluralité de cellules forment des zones d'enregistrement, chaque zone d'enregistrement (RA1, RA2, RA3 ...) présentant son propre identifiant (X). Dans le procédé selon l'invention, des zones de localisation séparées sont formées pour une ou plusieurs stations mobiles en vue d'éviter un nombre inutilement élevé d'enregistrements dans les zones frontalières des différentes zones d'eregistrement. Une zone de localisation peut se présenter sous forme de liste (X1, X2, X3, ...) stockées dans une station mobile (SM) ou éventuellement dans le système (HLR - registre de localisation local, MSC- central mobile) et transmise à la station mobile (SM) par l'intermédiaire d'une station de base (SB) dans une zone de localisation donnée conjointement avec l'enregistrement de la station mobile dans cette zone. Un nouvel enregistrement n'est effectué que si la station mobile entre dans une zone de desserte appartenant à la zone d'enregistrement dont l'identifiant (X) ne figure par sur la liste d'identifiants stockée (X1, X2, X3 ...).

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