Patent ID: 7519068
Filing Date: 2009-04-14
Classification: H04L,H04W

Abstract:
1. A protocol embodying system converting user data into IP packets and converting IP packets into user data for mobile station communications across various networks, the protocol embodying system in GGSN (gateway GPRS supporting node) including a GPRS (general packet radio service) network which includes protocols of first and second network layers, and a protocol of a transfer layer wherein a PDN (public data network) is connected to the GPRS network in which the PDN uses the protocols of the first and second layers to transmit the IP packets to the GPRS network, the protocol embodying system comprising: an IP layer provided between the GPRS network and the PDN, for performing inter-network routing between the two networks, and performing intra-network routing between the protocols of the first and second network layers and the transfer layer protocol on the GPRS network; a GPRS tunneling protocol unit (GTP-U) interfaced to the IP layer, the GTP-U converting the IP packets into tunnel messages using a GPRS tunneling protocol and intra-network transmitting the tunnel messages using the IP layer between the GTP-U and the GGSN; and a virtual driver provided on the lower part of the IP layer for performing inter-network routing of IP packets to the PDN via the IP layer and performing routing IP packets to the GTP-U from the virtual driver.