Remote DLNA communication system based on NTMobile

Abstract

With the spread of information home appliances certified by Digital Living Network Alliance (DLNA), it has become quite easy to share digital contents within a home network. In the meantime, the mobile Internet has been drawing much attention along with the popularization of high-performance mobile devices and the development of high-speed wireless communication technologies. Under such circumstances, there is a growing desire to obtain digital contents stored in a home network from a remote network in a simplified manner. In this paper, we propose a DLNA-based, remote communication method that enables the sharing of contents between a home network and a foreign network, by expanding functions of NTMobile (Network Traversal with Mobility), which is our original technology that can realize mobility and solve the NAT traversal simultaneously. By implementing our proposed method in a prototype system, we confirmed that a node can transmit media contents over a NAT and keep on browsing the contents even when the node moving to another network during communication.