Method for routing area (ra) update

H - Electricity – 04 – Q

Patent

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Details

H04Q 7/38 (2006.01) H04Q 7/22 (2006.01)

Patent

CA 2313117

The present invention relates to a method for routing area (RA) update request messages which in accordance with a time period broadcasted from the network are periodically sent from an MS (Mobile Station) to an SGSN (Serving GPRS Support Node) through a BSS (Base Station System), which SGSN supports GPRS (General Packet Radio Service), and which as a result of a routing area update procedure will return an appropriate accept message, and for the purpose of taking into account the differentiation in nature of normal routing area update procedure and periodic updates, it is according to the present invention suggested that for the purpose of simplifying said routing area update procedure, there is broadcasted a new indicator from the network together with the time period for the periodic routing updates, said indicator being adapted to determine whether the periodic routing update procedure is performed ciphered instead of unciphered.

L'invention concerne un procédé destiné à des messages de demande d'actualisation de zones d'acheminement (RA) qui sont périodiquement envoyés, selon une période diffusée par le réseau, d'une station mobile (MS) à un noeud d'appui GPRS de desserte (SGSN) par un système station de base (BSS). Ce SGSN supporte le GPRS (General Packet Radio Service) et, suite à une procédure d'actualisation de la zone d'acheminement, renvoie un message d'acceptation approprié. L'invention a pour objet, d'une part, de tenir compte de la différence de nature entre une procédure d'actualisation normale d'une zone d'acheminement et des actualisations périodiques et, d'autre part, de simplifier ladite procédure d'actualisation. Pour ce faire, un nouvel indicateur est diffusé par le réseau en même temps que la période des actualisations d'acheminement périodiques. Cet indicateur est conçu pour déterminer si la procédure d'actualisation d'acheminement périodique est réalisée de façon chiffrée au lieu de façon non chiffrée.

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