Provided are a system and a method in which bearers can be aggregated, increases in network resources, network facilities, and the like can be reduced, and excessive band securing can be avoided. When setting a tunnel between a user data gateway apparatus (50) and a user data mobility providing apparatus (40) based on a request from a terminal (1), one common aggregated tunnel (60) is set for a group of terminals (terminal group) including the terminal, based on subscriber information of the terminal (see Fig. 1 ).