General

What is the difference between GTP-C and GTP-U?

Standard

What is the difference between GTP-C and GTP-U?

GTP-C supports transport of control packets in IPv4 format. GTP-U— Transports user data within the core GPRS network and between the Radio Access Network (RAN) and the core network. GTP-U supports IPv4 and IPv6 user data, but transport is IPv4.

What is GTPv2 protocol?

GPRS Tunnelling Protocol version 2. In LTE , GTP (GPRS Tunnelling Protocol) tunnels are used between two nodes communicating over a GTP based interface, to separate traffic into different communication flows.

Why GTP protocol is used in LTE?

GPRS Tunneling protocol is an important IP/UDP based protocol used in GSM, UMTS and LTE core networks. It is used to encapsulate user data when passing through core network and also carries bearer specific signalling traffic between various core network entities.

What is difference between GTPv1 and GTPv2?

The GTPv1-U is used between eNodeB and Serving GW, between RNC and Serving GW and between SGSN and Serving GW as well as between Serving GWs. Thus the GTPv2-C is used on S3, S4, S5, S8, S10, S11 and S16 interfaces and GTPv1-U is used on S1-U, Iu-U, S4, S5, S8, S12 and X2-U interfaces.

What protocol is used between SGSN and GGSN?

GPRS Tunneling Protocol (GTP)
The protocol used for the tunnel between the SGSN and GGSN is the GPRS Tunneling Protocol (GTP).

What is S11 interface?

S11 – This is the interface between the MME and S-GW in an LTE network. The interface is based on Gn/GTP-Control (GTP-C) (interface between SGSN-GGSN) with some additional functions for paging coordination, mobility compared to the legacy Gn/GTP-C (SGSN-GGSN) interface. S11 is a many-to-many interface.

What is GTP Teid?

The GPRS tunneling protocol (GTP) stack assigns a unique tunnel endpoint identifier (TEID) to each GTP control connection to the peers. The GTP stack also assigns a unique TEID to each GTP user connection (bearer) to the peers. The TEID is a 32-bit number field in the GTP (GTP-C or GTP-U) packet.

What is the difference between GTP and ATP?

The key difference between ATP and GTP is that ATP is a nucleoside triphosphate made up of adenine nitrogenous base, sugar ribose, and triphosphate, while GTP is a nucleoside triphosphate made up of guanine nitrogenous base, sugar ribose, and triphosphate.

What is SCTP in LTE?

Stream Control Transmission Protocol (SCTP) is the key protocol utilized as transport for all signaling between the RAN and EPC. SCTP is also utilized as transport for the Diameter protocol in LTE.

What is Gx and Gy interface?

Gx interface enables signaling of PCC decisions, negotiation of IP-CAN bearer establishment mode and termination of Gx session . Gy. It is online charging reference point. Gy lies between PCEF (Policy Control Enforcement Function) and OCS (Online Charging Function).