Patent ID: 8620267

Claim:
A method performed by a target base station of a communication network for detecting a manipulated or defective status of a source base station in connection with a handover of a user equipment (UE), said method comprising: receiving a prioritized algorithm list (PAL) from the network, said list listing algorithms allowed for use when communicating with said UE in order of priority; receiving UE security capabilities (SCAP) related information from the source base station for the UE that is handed over between the source and target base stations; selecting at least one algorithm having the highest priority according to the PAL out of the algorithms allowed for use when communicating with said UE in response to said UE SCAP related information; and reporting the received UE SCAP related information to a core network node that has knowledge of the UE SCAP of said UE and that is configured to use the reported UE SCAP related information to detect whether the source base station has a manipulated or defective status.