GPRS is utilized to convey General Packet Radio Service (GPRS) inside the 3G and 4G networks. GTP is described by 3gpp network. A GTP tunnel is a channel between two GPRS support nodes by which two hosts convey information. The S-GW encapsulates packets inside a GTP header before forwarding them to the P-GW through the GTP tunnel. At the point when the P-GW receives the packets, it decapsulates them and forwards them to the external host.