INTER-RAT HANDOVER CONTROL USING SEQUENCE NUMBERS

INTER-RAT HANDOVER CONTROL USING SEQUENCE NUMBERS

An empty GRE packet along with a sequence number provides in-order delivery of data packets for a session to a UE during inter-RAT handover. In particular, an empty GRE packet sent from a source gateway in a source RAN (Radio Access Network) to a target gateway in a target RAN includes a sequence nu...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: JAISWAL, Suraj, WEN, Renhua
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
WIRELESS COMMUNICATIONS NETWORKS
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:An empty GRE packet along with a sequence number provides in-order delivery of data packets for a session to a UE during inter-RAT handover. In particular, an empty GRE packet sent from a source gateway in a source RAN (Radio Access Network) to a target gateway in a target RAN includes a sequence number to indicate to the target gateway the end of forwarded data packets from the source gateway. The target gateway sends data packets received from the source gateway to the UE until the empty GRE packet with the expected sequence number is received. Upon receipt of the empty GRE packet containing the expected sequence number, the target gateway begins sending data packets received directly from a home network gateway to the UE.