Method, system and device for transmitting GTPv2 messages

Abstract

The invention discloses a method, a system and a device for transmitting GTPv2 messages of general packet radio service tunnel protocol of transmitting version 2, which are used for improving the reliability of the GTPv2 message transmitting by using a GTP tunnel. The method comprises the following steps: establishing the GTP tunnel between a first network entity supporting GTPv2 protocol and a second network entity supporting the GTPv2 protocol by adopting the GTPv2 protocol, wherein the GTP tunnel comprises two IP connections which are respectively a first IP connection adopting Internet protocol IPv4 as the tunnel IP protocol and a second IP connection adopting Internet protocol IPv6 as the tunnel IP protocol; and transmitting the GTPv2 messages between the first network entity and thesecond network entity through the GTP tunnel. The invention is used for transmitting the GTPv2 messages between the network entities supporting the GTPv2 protocol through the GTP tunnel.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, system and device for transmitting version 2 General Packet Radio Service (GPRS, General Packet Radio Service) Tunneling Protocol (GTP, GPRS Tunneling Protocol) (hereinafter referred to as GTPv2) messages. Background technique [0002] In the Evolved Packet System (EPS, Evolved Packet System), a new core network architecture is adopted, and the GTPv2 protocol is used. The architecture of the EPS system is as follows figure 1 As shown, in the EPS system, there are Serving GPRS Service Node (SGSN, Serving GPRS Support Node), Serving Gateway (Serving GW), Mobility Management Entity (MME, Mobility Management Entity), Packet Data Network Gateway (PDN GW, Packet Data Network Gateway), Home Subscriber Server (HSS, Home Subscriber Server), Policy and Charging Rules Function (PCRF, Policy and Charging Rules Function) entity, and IP Service (Operator's IP Services...

AI Technical Summary

Problems solved by technology

[0009] However, in the GTPv1 protocol, the method of extending and supporting the IPv6 protocol as the IP protocol of the GTP tunnel through the negotiation mechanism increases the complexity of the protocol implementation, the complexity of equipment development, and the complexity of testing and use during network deployment.

[0010] In the 3GPP system, in order to provide the reliability of IP communication, the GTPv0 or GTPv1 protocol adopted by the network entity provides a retransmission mechanism on the GTP layer, that is, when the GTP message sent by an IP connection on the GTP tunnel times out and no response is received , resend the GTP message on the IP connection, if the IP connection fails, resending the message still cannot solve the problem

[0011] To sum up, if the GTPv2 protocol still uses the GTP tunneling technology of the existing GTP protocol, the reliability of GTPv2 message transmission using the GTPv2 protocol is still not improved, and there is still an IP address negotiation process that makes the process of using the GTPv2 protocol to transmit GTPv2 messages quite complicated

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