Embodiments of the invention include a universal integrated mobile gateway used in wireless communication networks to interconnect different networks, comprising: AMP for data collocation and state management for other modules, CCM for data switching network management (together with other modules) and control data frame switching between modules, CDP for storage and management of relay resource and global shared resources, SPCs for processing services in different networks, and network interface; CCM is connected with AMP, CDP, and SPCs through HDLC protocol; SPCs are connected to the network interface through TCP/IP protocol. The embodiments improve normalization and operability of network interconnection, facilitate unified settlement between different networks, and enhance overall resource utilization of the networks.