![]() ![]() A GTP header is added to the T-PDU to constitute a G-PDU (or GTP-U PDU), which is sent in an UDP/IP path, a connectionless path between two endpoints.įigure 3.31 illustrates a tunneling mechanism for IP packet sending toward MS. With the tunneling mechanism, T-PDUs are multiplexed and demultiplexed by GTP between two GSNs by using the TEID field present in the GTP headers, which indicates the tunnel of a particular T-PDU. The IP datagram tunneled in a GTP tunnel is called a T-PDU. GTP-C tunnel (control plane), defined for all PDP contexts with the same PDP address and access point network (APN). GTP-U tunnel (user plane), defined for each PDP context in the GSNs We show our new flow controlled based routing method to significantly improve network throughput, packet delay, packet delay jitter, and packet loss ratio. Figure 3.31 illustrates a tunneling mechanism for IP packet sending toward MS. These identifiers are contained in IP and GTP PDU headers. Figure 3.30 shows the architecture of the GPRS backbone network (see gray. A GTP tunnel is identified in each GSN node by a tunnel endpoint identifier (TEID), a GSN IP address, and a UDP port number. A GTP tunnel is created during a PDP context activation procedure. 14 10 Access Network 1 20 22 MPDS GMPDS 16 Packet Switch Backbone Network. A GTP tunnel is a two-way PTP path between two GSNs used to deliver packets between an external PDN and an MS. 6,137,782 AUTOMATIC NETWORK TRAFFIC ANALYSIS Azulai Sharon, 1035 Aster Ave. ![]()
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