Method for implementing access stratum security, user equipment, and small radio access network node

摘要

A method for implementing access stratum security is provided. The method includes: performing end-to-end user plane access stratum security between a UE and a gateway node; and performing end-to-end control plane access stratum security between the UE and an initial access node when the UE only has a micro communication path; when the UE has the micro communication path and a macro communication path, performing end-to-end control plane access stratum security between the UE and a macro base station in the macro communication path. The micro communication path is a communication path in which the UE accesses a small radio access node via a radio access link and then accesses a core network finally. The macro communication path is a communication path in which the UE accesses the macro base station via the radio access link and then accesses the core network finally.