Method and apparatus for providing fixed cellular functionality

H - Electricity – 04 – W

Patent

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H04W 48/04 (2009.01) H04W 84/14 (2009.01)

Patent

CA 2226483

A method and apparatus for providing fixed telephony service in a mobile cellular telecommunications system is disclosed. In the invention a fixed subscriber (130) is assigned a fixed area (132) within a cellular system and may not move beyond the fixed area. The restriction on movement is accomplished by monitoring a location area identity (LAI) (316, 332), a timing advance (TA) value (318, 328) and a handover candidate cell list (326) for the fixed subscriber. Monitored parameters are then compared with a fixed LAI, a fixed TA and a fixed handover candidate cell list to determine if the fixed subscriber has moved beyond the fixed area. If the comparison indicates movement has occurred, a violation signal (319, 338) is generated.

La présente invention se rapporte à un procédé et à un appareil assurant un service de téléphonie fixe dans un système de télécommunications cellulaires mobiles. Dans l'invention, une zone fixe à l'intérieur d'un système cellulaire est attribuée à un abonné fixe (130) et celui-ci ne peut se déplacer à l'extérieur de cette zone fixe. La restriction des mouvements est obtenue en surveillant une identité de zone de situation (LAI) (316, 332), une valeur d'avance de temps (TA) (318, 328) et une liste (326) de cellules candidates au transfert pour l'abonné fixe. Les paramètres surveillés sont ensuite comparés à une LAI fixe, une TA fixe et une liste fixe de cellules candidates au transfert pour déterminer si l'abonné fixe s'est déplacé hors de la zone fixe. Si la comparaison indique qu'un mouvement s'est produit, un signal de violation (319, 338) est généré.

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