Method and device for allocating tunnel end point identifiers

A tunnel endpoint identification and tunnel technology, which is applied in data exchange through path configuration, digital transmission system, electrical components, etc., can solve the problem of increasing the length of the tunnel message, message transmission and processing time, etc., to reduce the length of the message and the efficiency of the message Transmission and processing time, the effect of speeding up the build process

Active Publication Date: 2011-04-20
DATANG MOBILE COMM EQUIP CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

How to assign TEIDs to GTP-U tunnel nodes in the GTPv2 system. At present, there is no definite solution. The TEID allocation method of GTPv1 GTP-U tunnels can be determined by GTP tunnel nodes. However, when a GTP tunnel node allocates a After the TEID of the GTP-U tunnel, it is necessary to carry the TEID of the GTP-U tunnel in the tunnel establishment message to notify the peer node, which will increase the length of the tunnel establishment message and the transmission and processing time of the message

Method used

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  • Method and device for allocating tunnel end point identifiers
  • Method and device for allocating tunnel end point identifiers
  • Method and device for allocating tunnel end point identifiers

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Embodiment 1

[0036] figure 2 It is a flowchart of Embodiment 1 of the method of the present invention. Such as figure 2 As shown, embodiment one includes:

[0037] Step 201. When GTP node A establishes a GTP-C tunnel with GTP node B, it allocates a TEID value TEID-CA of the GTP-C tunnel.

[0038] Step 202, when GTP node A and GTP node B establish a GTP-U tunnel, GTP node A uses TEID-CA as an input parameter, and obtains GTP according to the preset function f(TEID)=TEID+1 according to the preset function The TEID value of the GTP-U tunnel of node A is TEID-UA, and the GTP node A notifies the TEID-CA to its peer node GTP node B in the GTP-C tunnel through the GTP-C request message.

[0039] It should be noted here that the specific form of f(TEID) is not limited in practical applications, as long as the following conditions are met: f(TEID) is a function commonly used by all nodes in the system, and its input and output are one-to-one mapping relationships; The function used in this em...

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Abstract

The invention provides a method and a device for allocating tunnel end point identifiers. When a GPRS tunnel protocol (GTP) node establishes a GTP control plane (GTP-C) tunnel, a tunnel end point identifier (TEID) of the GTP-C tunnel is allocated, and an opposite end node of the GTP node is informed. When the GTP node establishes a GTP user plan (GTP-U) tunnel, the TEID value of the GTP-C tunnel is taken as an input parameter, and the TEID value of the GTP-U tunnel is obtained according to a preset function. The opposite end node of the GTP node takes the TEID value of the GTP-C tunnel of theGTP node as the input parameter, and the TEID value of the GTP-U tunnel of the GTP node is obtained according to the preset function. The invention dose not need to transmit the TEID of the GTP-U tunnel to the opposite end node through GTP-C messages, thereby reducing the message length of tunnel establishment and the time for transmission and processing.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to a method and equipment for allocating tunnel end point identifiers (TunnelEnd Point Identifier, TEID). Background technique [0002] In the general packet radio service tunneling protocol (GPRS Tunneling Protocol, GTP) system, for the IP address of a user equipment (UE) connected by an access point name (APN), there is one and only one GTP on the interface using the GTPv1 protocol. Control plane (GTP-C) tunnels, but there can be one to many GTP user plane (GTP-U) tunnels. When establishing each GTP tunnel, whether it is a GTP-C tunnel or a GTP-U tunnel, nodes at both ends of the tunnel will respectively assign a tunnel end point identifier (Tunnel End Point Identifier, TEID). After the GTP tunnel is established, when the sending node sends a GTP message to the receiving node, the GTP message header will carry the TEID value allocated by the receiving node. In the first...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46H04L12/56H04L29/06H04W72/04
Inventor 熊春山沈宇希
Owner DATANG MOBILE COMM EQUIP CO LTD
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