SECURE DATA TRANSMISSION METHOD AND ASSOCIATED DEVICE

摘要

A secure data transmission method and an associated device. Secure data transmission includes: user equipment (UE) sending a first measurement report message to a first station, the first station being a current service station of the UE; receiving a cell adding command message returned by the first station, the cell adding a command message containing the physical cell identifier (PCI) and frequency of a newly added cell as well as the security algorithm identifier of a second station to which the newly added cell belongs, wherein the newly added cell is determined as a newly added service cell for the UE by the first station based on the first measurement report message; generating a security key based on the PCI and frequency of the newly added cell and the security algorithm specified by the security algorithm identifier; and carrying out secure data transmission using the generated security key and the second station. The technical solution provided in the embodiments of the present invention can realize secure data transmission between UE and different service stations.