In-order data delivery during handover in a wireless...

Details In-order data delivery during handover in a wireless... In-order data delivery during handover in a wireless...

H - Electricity

04

W

H04W 36/02 (2009.01)

Patent

CA 2693821

Techniques for performing in-order data delivery during handover in a wireless communication system are described. A user equipment (UE) may perform handover from a source base station to a target base station. The target base station may start a timer after a data path from a gateway to the UE has been switched from the source base station to the target base station. The target base station may receive forwarded packets for the UE from the source base station and may receive new packets for the UE from the gateway. The target base station may send the forwarded packets received prior to expiration of the timer to the UE before any new packets. The target base station may send the forwarded packets to the UE without waiting for the timer to expire and may send the new packets to the UE after the timer expires.

La présente invention concerne des techniques pour effectuer une fourniture de données ordonnées lors d'un transfert dans un système de communications sans fil. Un équipement utilisateur (UE) peut effectuer un transfert depuis une station de base source vers une station de base cible. La station de base source peut démarrer un chronomètre après qu'un trajet de données à partir d'une passerelle vers l'UE a été basculé de la station de base source à la station de base cible. La station de base cible peut recevoir des paquets transférés pour l'UE depuis la station de base source et peut recevoir de nouveaux paquets pour l'UE depuis la passerelle. La station de base cible peut envoyer les paquets transférés reçus avant l'expiration du chronomètre à l'UE avant tout nouveau paquet. La station de base cible peut envoyer les paquets transférés à l'UE sans attendre l'expiration du chronomètre et peut envoyer les nouveaux paquets à l'UE après l'expiration du chronomètre.

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