Method and Arrangement in a Telecommunication System
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsIngrid Nordstrand, Håkan Palm
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Abstract
The invention relates to a method and arrangement in a serving Radio Network Controller, SRNC for controlling inter RAT handover to E-UTRAN of a UE with E-UTRA capability operating in a serving network comprising said SRNC, wherein the SRNC receives, from a Serving GPRS Support Node, SGSN, security keys generated at authentication and key agreement, AKA, upon attachment of the UE to the serving network; characterized in the steps of determining (202) which type of UICC the UE is equipped with by analyzing the security keys received from SGSN; using the knowledge of which type of UICC the UE is equipped with to base a decision (204) on whether to allow handover of the UE to E-UTRAN.
Claims14
A method in a serving Radio Network Controller, SRNC, for controlling inter RAT handover to E-UTRAN of a User Equipment, UE, with E-UTRA capability operating in a serving network comprising said SRNC, wherein the SRNC receives, from a Serving GPRS Support Node, SGSN, security keys generated at authentication and key agreement, AKA, upon attachment of the UE to the serving network;
- comprising the steps of:
- determining which type of UICC the UE is equipped with by analyzing the security keys received from SGSN;
- and
- using the knowledge of which type of UICC the UE is equipped with to base a decision on whether to allow handover of the UE to E-UTRAN.
An arrangement in a Radio Network Controller, RNC, capable of controlling inter RAT handover to E-UTRAN of a UE with E-UTRA capability operating in a serving network comprising said RNC, comprising an interface for communicating with a Serving GPRS Support Node, SGSN, said interface being adapted to receive, from the SGSN, security keys generated at authentication and key agreement, AKA, upon attachment of the UE to the serving network;
- comprising a processing unit capable of:
- determining which type of UICC the UE is equipped with by analyzing the security keys received from SGSN;
- and
- using the knowledge of which type of UICC the UE is equipped with to base a decision on whether to allow handover of the UE to E-UTRAN.
Dependencies are inferred from the claim text.