Call set-up on 800 mhz analog voice channel from 1900 mhz...

Details Call set-up on 800 mhz analog voice channel from 1900 mhz... Call set-up on 800 mhz analog voice channel from 1900 mhz...

H - Electricity

04

Q

H04Q 7/36 (2006.01) H04Q 7/22 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2260882

In a cellular network having a first cluster of base stations (BSA, BSB) serving a first group of mobile stations (MS) over digital RF channels and a second cluster of base stations (BSA, BSB), collocated with said first cluster, for serving a second group of mobile stations over analog RF channels, wherein some of the base stations in the second cluster (A', B') have cells which overlap with cells (A, B) of the first cluster, a method (Figs. 3a, 3b) is disclosed for setting up a call on an analog voice channel of a base station of the second cluster while a mobile station is being served on a digital control channel of a base station in the first cluster. In another a method is disclosed for setting up a call on an analog voice channel while the mobile station is being served on a digital traffic channel.

L'invention concerne un réseau cellulaire comportant une première grappe de stations de base (BSA, BSB) desservant un premier groupe de stations mobiles (MS) sur des radiocanaux numériques, et une deuxième grappe de stations de base (BSA, BSB), située au même endroit que la première grappe, pour desservir un deuxième groupe de stations mobiles sur des radiocanaux analogiques, certaines des stations de base de la deuxième grappe (A', B') possédant des cellules chevauchant des cellules (A, B) de la première grappe. L'invention concerne un procédé (Figs. 3a, 3b) pour établir une communication sur une voie téléphonique analogique d'une station de base de la deuxième grappe tandis qu'une station mobile est en cours de prise en charge sur une voie de commande numérique d'une station de base de la première grappe. L'invention concerne également un procédé pour établir une communication sur une voie téléphonique analogique tandis que la station mobile est en cours de prise en charge sur un canal de trafic numérique.

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