Method, equipment and system for realizing security context information synchronization

Abstract

The embodiment of the invention provides a method, equipment and a system for realizing security context information synchronization. The method comprises the following steps that: a base station acquires user plane security context information of user equipment transmitted by a radio network controller (RNC), wherein the user plane security context information comprises an uplink / downlink serial number and an encryption key which are wirelessly carried; the base station encrypts data transmitted to the user equipment according to the user plane security context information or decrypts the data received from the user equipment, wherein the user plane security context information varies along with the encryption / decryption; and if set trigger conditions are met, the base station transmits the changed user plane security context information serving as the current user plane security context information to the RNC. Therefore, the synchronization of the security context information between a Node B and the RNC is guaranteed to smoothly perform certain operation processes in a universal mobile telecommunications system (UMTS).

Description

technical field [0001] The embodiments of the present invention relate to the field of communication technologies, and in particular, to a method, device and system for realizing synchronization of security context information. Background technique [0002] Local Switch (hereinafter referred to as: LS) ​​is a local loopback technology for user data. This technology enables user data to be directly looped back locally at a data aggregation point that is closer to the user, saving transmission resources within the network. . For the Universal Mobile Telecommunications System (Universal Mobile Telecommunications System; UMTS for short), there are two types of LSs, namely a base station (NodeB) LS and a radio network controller (Radio Network Controller; RNC for short) LS. Since the transmission resource of the Iub interface between NodeB and RNC is more scarce, the demand of NodeB LS is more urgent. NodeB LS can effectively save data transmission resources on the Iub interfac...

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a method, device, and system for synchronizing security context information to solve the problem in the prior art that the security context between RNC and NodeB is not synchronized, resulting in the inability to complete some operation procedures in UMTS

Images