METHOD FOR LINK SECURITY AUTHENTICATION IN WIRELESS RELAY NETWORKS, DEVICE AND SYSTEM THEREOF

摘要

A method, device and system for link security authentication in wireless relay networks are disclosed in the present invention, and the method includes that: a multi-hop relay base station or an access relay station receives a first management message sent by a mobile station, the first management message carries a first message authentication code, and the first management message also carries a count value of the first message authentication code key and a count value of the first message authentication code packet number which are contained in a first authentication key context stored by the mobile station itself; the first message authentication code is verified based on a second authentication key and a second authentication key identification which are contained in a second authentication key context, the count value of the first message authentication code key, and the count value of the first message authentication code packet number, and whether the access link between the mobile station and the access relay station is safe is determined based on the verification result. With the technical scheme of the present invention, replay attacks in the wireless relay networks could be prevented effectively