Patent ID: 8724818

Claim:
A method for security processing during Radio Resource Control (RRC) connection re-establishment, wherein the method comprises: a User Equipment (UE) sending an RRC connection re-establishment request message to an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) NodeB (eNB); and after receiving the RRC connection re-establishment request message, the eNB determining whether an original access layer security algorithm used by the UE is supported by the eNB itself according to a current status and configuration; and if supported, communication protection between the eNB and the UE being implemented via the original access layer security algorithm; if not supported, according to the security capability of the UE, a access layer security algorithm which has the highest priority and is supported by the UE being selected from access layer security algorithms configured by the eNB itself to be a new access layer security algorithm, and the communication protection between the eNB and the UE being implemented by the new access layer security algorithm.