Disclosed herein is a Residential Gateway (RG) system for home network service. The RG system receives various supplementary services through a Home Network Serving Node (HNSN) that provides home network service. The system includes an Open Service Gateway initiative (OSGi) framework, an RG agent, a virtual Universal Plug and Play (UPnP) device, and a Java virtual machine. The RG agent is installed on the OSGi framework and implemented in bundle form. The UPnP device is registered on the OSGi framework by the RG agent. The Java virtual machine is ported by the RG agent to hardware on which an operating system is installed.