METHOD AND ARRANGEMENT IN A TELECOMMUNICATION SYSTEM

METHOD AND ARRANGEMENT IN A TELECOMMUNICATION SYSTEM

A security key, K_eNB, for protecting RRC/UP traffic between a User Equipment, UE, (11) and a serving eNodeB (12) is established by a method and an arrangement in a Mobility Management Entity (13), MME, and in said UE (11), of an Evolved Packet System, EPS. The MME and the UE derives the security ke...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MILDH, Gunnar, Blom, Rolf, NORRMAN, Karl
Format: Patent
Sprache:eng ; hun
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
WIRELESS COMMUNICATIONS NETWORKS
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Beschreibung
Zusammenfassung:A security key, K_eNB, for protecting RRC/UP traffic between a User Equipment, UE, (11) and a serving eNodeB (12) is established by a method and an arrangement in a Mobility Management Entity (13), MME, and in said UE (11), of an Evolved Packet System, EPS. The MME and the UE derives the security key, K_eNB, from at least an NAS uplink sequence number, NAS_U_SEQ, sent from the UE to the MME, and from an Access Security Management Entity-key, K_ASME, shared between the MME and the UE.