Brevet : EP3057357 - CHANGEMENT DE CELLULE CSFB

Titre

CHANGEMENT DE CELLULE CSFB

N° et date de publication de la demande

EP3057357 - 17/08/2016

Type de la demande

A1

N° et date de dépôt

EP13896842.5 - 04/11/2013

N° et date de priorité

PCT/CN2013086517 - 04/11/2013

Famille de brevets

WO2015062111A1 ; EP3057357A1 ; US2016249258A1 ; CN105122882A

Abrégé

The present invention discloses a network handover method, where in a process of implementing circuit switched fallback, handover from an LTE network to a 2G or 3G network is triggered, so that UE can be directly handed over from the LTE network to a CS domain of the 2G or 3G network, and the network or the UE uses a session generated in the process in which the called party is handed over from the LTE network to the CS domain of the 2G or 3G network. Therefore, a common called procedure does not need to be performed after the UE is handed over from the LTE network to the 2G or 3G network, thereby shortening time for which a user waits before the voice session is connected.