发明名称 |
Method and arrangement in a telecommunication system |
摘要 |
A method in a User Equipment (UE) of an Evolved Packet System (EPS) establishes a security key (K_eNB) for protecting Radio Resource Control/User Plane (RRC/UP) traffic exchanged with a serving eNodeB. The method comprises sending a Non-Access Stratum (NAS) Service Request to a Mobility Management Entity (MME), the request indicating a NAS uplink sequence number (NAS_U_SEQ). The method further comprises receiving an indication of the NAS_U_SEQ of the NAS Service Request sent to the MME, back from the MME via the eNodeB. The method further comprises deriving the K_eNB from at least the received indication of the NAS_U_SEQ and from a stored Access Security Management Entity-key (K_ASME) shared with said MME. |
申请公布号 |
US8938076(B2) |
申请公布日期 |
2015.01.20 |
申请号 |
US201414151077 |
申请日期 |
2014.01.09 |
申请人 |
Telefonaktiebolaget L M Ericsson (Publ) |
发明人 |
Blom Rolf;Mildh Gunnar;Norman Karl |
分类号 |
H04L9/08;H04W12/04;H04L29/06;H04W8/20;H04W92/10 |
主分类号 |
H04L9/08 |
代理机构 |
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代理人 |
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主权项 |
1. A method in a User Equipment (UE) of an Evolved Packet System (EPS) of establishing a security key (K_eNB) for protecting Radio Resource Control/User Plane (RRC/UP) traffic exchanged with a serving eNodeB, the method comprising:
sending a Non-Access Stratum (NAS) Service Request to a Mobility Management Entity (MME), the request indicating a NAS uplink sequence number (NAS_U_SEQ); receiving an indication of the NAS_U_SEQ of the NAS Service Request sent to the MME, back from the MME via the eNodeB; deriving the K_eNB from at least the received indication of the NAS_U_SEQ and from a stored Access Security Management Entity-key (K_ASME) shared with said MME. |
地址 |
Stockholm SE |