A METHOD AND SYSTEM FOR INTERCONNECTING A UMTS NETWORK WITH AN EVOLVED NETWORK

摘要

A method and system for interconnecting a UMTS network with an evolved network include a UMTS network and an evolved network, a UTRAN in the UMTS is connected with the evolved packet core of the evolved network, a UE is accessed to the evolved packet core via the UTRAN of UMTS. According to this invention, if only the UTRAN is interconnected with the evolved packet core, the mobility management and session management functions or the like may be performed by the evolved packet core when the UB is switching and roaming between UMTS network and evolved network, and the efficiency of mobility management and session management is largely advanced; and when the UE moves from the evolved access network to the area which is converged only by UMTS network, it is only necessary to establish a data link between the evolved packet core and UTRAN, thereby the amount of the nodes required on the data link is reduced, and the time for switching between the evolved network and UMTS network is shortened, the rigorous requirements of switch time between systems required by 3GPP is easily satisfied.