PACKET OFF-LOADING SYSTEM USING FEMTO-CELL LOCAL GATEWAY AND D2D COMMUNICATION TECHNOLOGY AT REMOTE SHIPYARD

摘要

The present invention relates to a packet off-loading method, and more specifically, to an off-loading scheme applied to a remote shipyard to separate traffic, which exchanges important information between a higher level shipyard and a remote shipyard, from general traffic. According to the present invention, a packet off-loading system using a femto-cell local gateway and a D2D communication technology at remote shipyard includes a local gateway added beside SeNB to be tunneling-connected to a PDN gateway. When the tunneling-connection between the local gateway and the PDN gateway is constructed, an off-load state is registered at cache entry of the local gateway according to the cache entry stored in the local gateway, and then the off-load is performed, data is transmitted to the PDN gateway without the off-load, or an off-load through a D2D communication is performed, so that a traffic off-load is performed according to a network situation between the higher level shipyard and a lower level shipyard.;COPYRIGHT KIPO 2016