CN101540712A - Method and device for allocating tunnel end point identifiers - Google Patents
Method and device for allocating tunnel end point identifiers Download PDFInfo
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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 the GTP 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
The present invention relates to mobile communication technology, particularly relate to a kind of distribution Tunnel End Point Identifier (TunnelEnd Point Identifier, method and apparatus TEID).
Background technology
At general packet wireless service tunnel protocol (GPRS Tunneling Protocol, GTP) in the system, the IP address of a subscriber equipment (UE) that connects for an access point name (APN), on the interface that uses the GTPv1 agreement, there is and has only a GTP control plane (GTP-C) tunnel, but can have one to a plurality of GTP user planes (GTP-U) tunnel.When setting up each GTP tunnel, no matter be GTP-C tunnel or GTP-U tunnel, two end nodes in this tunnel will distribute respectively a Tunnel End Point Identifier (Tunnel End Point Identifier, TEID).After this GTP tunnel is set up, when sending node sends GTP message to receiving node, will carry the TEID value that receiving node distributes in this GTP message header.In the 1st edition GTP (GTPv1), the distribution of above-mentioned TEID is to be decided in its sole discretion by each node, as long as guarantee that TEID is unique in its IP address, a simplest distribution method is the TEID increment method.The node of this GTP tunnel is being after a GTP tunnel distributes a TEID, need carry this TEID in setting up the message in tunnel, with the receiving node of notice opposite end.
At present, third generation collaborative project (Third Generation Partnership Project, 3GPP) determine that substantially (Evolved Packet System uses the 2nd edition GTP (GTPv2) on S5 EPS) (based on GTP), S8, S10, the S11 interface at evolved packet system.How GTP-U tunnel node carries out the distribution of TEID in the GTPv2 system, at present, also there is not definite solution, can continue to use the distribution method that the TEID in the GTP-U tunnel of GTPv1 is decided in its sole discretion by the GTP tunnel node, but distribute the TEID in a GTP-U tunnel when the GTP tunnel node after, need carry the TEID in this GTP-U tunnel in setting up the message in tunnel, with the notice peer node, this will increase the message-length of setting up the tunnel and the transmission and the processing time of message.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of distributing Tunnel End Point Identifier, and it can reduce the message-length when setting up the tunnel and the transmission and the processing time of message.
In order to achieve the above object, the technical scheme of the present invention's proposition is:
A kind of method of distributing Tunnel End Point Identifier may further comprise the steps:
One GTP node distributes the TEID in a GTP-C tunnel, and notifies the peer node of described GTP node on described tunnel when setting up the GTP-C tunnel;
Described GTP node is when setting up GTP user plane GTP-U tunnel, and the TEID value of utilizing its GTP-C tunnel obtains the TEID value in the GTP-U tunnel of described GTP node as input parameter according to default function; Described function is the common function that uses of all GTP nodes in the system, and its input and output are mapping relations one by one;
The peer node of described GTP node is when setting up the GTP-U tunnel, and the TEID value in GTP-C tunnel of utilizing described GTP node is as input parameter, obtain according to described default function described GTP node the GTP-U tunnel the TEID value and be stored in self node.
Aforesaid method, further comprise: when the TEID value in the GTP-C tunnel of described GTP node is upgraded, described GTP node is new GTP-C tunnel TEID value of its GTP-C tunnel distributing, described GTP node as input parameter, obtains the TEID value in the new GTP-U tunnel of described GTP node with the TEID value in described new GTP-C tunnel according to described default function; Described GTP node is by the TEID value in the described new GTP-C tunnel of its peer node of message informing, peer node utilizes the TEID value in new GTP-C tunnel of described GTP node as input parameter, obtain according to described default function described GTP node new GTP-U tunnel the TEID value and be stored in self node.
Aforesaid method, the GTP-U tunnel of described GTP node further comprises: when need upgrade, described GTP node is the TEID value in a new GTP-C tunnel of its GTP-C tunnel distributing, described GTP node as input parameter, obtains the TEID value in the new GTP-U tunnel of described GTP node with the TEID value in described new GTP-C tunnel according to described default function; Described GTP node is by the TEID value in the described new GTP-C tunnel of its peer node of GTP-C message informing, peer node with the TEID value in the new GTP-C tunnel of described GTP node as input parameter, obtain according to described default function described GTP node new GTP-U tunnel the TEID value and be stored in self node.
The present invention also provides a kind of equipment that distributes Tunnel End Point Identifier, can reduce the message-length when setting up the tunnel and the transmission and the processing time of message.
In order to achieve the above object, the technical scheme of embodiment of the invention proposition is:
A kind of equipment that distributes Tunnel End Point Identifier mainly comprises:
Start module, be used for when setting up GTP-C tunnel and GTP-U tunnel, triggering this end node distribution module and peer node generation module and carry out;
This end node distribution module is used for when setting up the GTP-C tunnel, distributes the TEID in a GTP-C tunnel, exports it to storage module, and sends it to peer node by sending module; When setting up the GTP-U tunnel, the TEID value in the GTP-C tunnel that distributes with this end node is as input parameter, obtain according to the function of presetting the local terminal node the GTP-U tunnel the TEID value and export storage module to; Described function is the common function that uses of all nodes in the system;
The peer node generation module is used for obtaining from storage module the TEID value in the GTP-C tunnel of peer node, with it as input parameter, obtain according to described default function peer node the GTP-U tunnel the TEID value and be stored in the storage module;
Sending module is used for the TEID in the GTP-C tunnel of this end node of this end node distribution module output is sent to peer node;
Receiver module is used to receive the TEID in the GTP-C tunnel of peer node, and exports in the storage module;
Storage module is used to store the TEID in GTP-C tunnel of this end node of this end node distribution module output and the TEID value in GTP-U tunnel; Be used to store the TEID in GTP-C tunnel of the peer node of receiver module output, be used to store the TEID in GTP-U tunnel of the peer node of peer node generation module output.
In the aforesaid equipment, described end node distribution module, be further used for when the TEID value in the GTP-C tunnel of this end node is upgraded, the TEID that distributes a new GTP-C tunnel, export it to storage module, be used for TEID value with the new GTP-C tunnel of this end node as input parameter, obtain according to described default function the local terminal node new GTP-U tunnel the TEID value and export storage module to;
Described peer node generation module, be further used for when the TEID value in the GTP-C tunnel of peer node is upgraded, from storage module, obtain the TEID value in the new GTP-C tunnel of peer node, with it as input parameter, obtain according to described default function peer node new GTP-U tunnel the TEID value and output storage module in.
In sum, the method and apparatus of the distribution Tunnel End Point Identifier that the present invention proposes is by the default function of drawing-in system, make each GTP node utilize the TEID value in GTP-C tunnel and the TEID value that the default function of coupling system distributes the GTP-U tunnel, thereby make the TEID value in this GTP-U tunnel can be directly adopt identical method to calculate by the peer node in described tunnel, and need in GTP-C message, not be notified to peer node, thereby reduced the message-length when setting up the tunnel and the transmission and the processing time of message, accelerated the process of setting up in GTP-U tunnel.
Description of drawings
Fig. 1 is the flow chart of the inventive method.
Fig. 2 is the flow chart of the embodiment one of the inventive method.
Fig. 3 is the structural representation of present device.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
The present invention be directed in the GTP agreement GTP-C tunnel and only manage the TEID distribution method that the situation in the tunnel of a GTP-U proposes.Basic thought of the present invention is to set up corresponding GTP-U tunnel when setting up a GTP-C tunnel, the value of the TEID in the GTP-U tunnel that any GTP node is distributed can utilize the predefined function of TEID and system in the GTP-C tunnel that has distributed in advance directly to calculate, accordingly, its peer node also can utilize said method to calculate this value, thus, do not need to send by message, peer node can obtain the value of TEID in the GTP-U tunnel of this node.
As shown in Figure 1, the present invention mainly comprises:
In actual applications, the distribution method of the TEID in described GTP-C tunnel is selected according to actual conditions voluntarily by described GTP node, can adopt the Random assignment method in the existing GTP agreement.
Here need to prove that described in actual applications node will be set up a GTP-U tunnel when setting up a GTP-C tunnel, just step 101 and 102 is carried out synchronously.
The peer node of step 103, described GTP node is when setting up the GTP-U tunnel, the TEID value in GTP-C tunnel of utilizing described GTP node is as input parameter, obtain according to described default function described GTP node the GTP-U tunnel the TEID value and be stored in self node.
Here it should be noted that, technique scheme has only been listed when setting up described GTP-C and GTP-U tunnel, wherein an end node carries out the key step that TEID divides the required execution of timing, two end nodes in above-mentioned tunnel all need the execution above-mentioned steps of working in coordination in actual applications, the distribution of needed tunnel two end node TEID when setting up to finish the tunnel describes the present invention with specific embodiment below:
Fig. 2 is the flow chart of the embodiment one of the inventive method.As shown in Figure 2, embodiment one comprises:
When step 202, GTP node A and GTP Node B are set up a GTP-U tunnel, GTP node A with TEID-CA as input parameter, obtain the TEID value TEID-UA in the GTP-U tunnel of GTP node A according to default described default function f (the TEID)=TEID+1 of function, GTP node A is notified to it in the peer node GTP in described GTP-C tunnel Node B by the GTP-C request message with TEID-CA.
Here it should be noted that the concrete form of f (TEID) is not limit in actual applications, only need satisfy following condition: f (TEID) and be the common function that uses of all nodes in the system that its input and output are mapping relations one by one; The function that uses in the present embodiment is f (TEID)=TEID+1.
Here, the GTP Node B is the TEID-UA value that the GTP-U tunnel is distributed by the GTP node A that preservation calculates, make that after this need not this by the GTP-U tunnel when GTP node A sends GTP-U message calculates again, the TEID value that the TEID-UA value of the GTP node A that direct utilization is preserved is provided with the GTP-U message header gets final product.
As input parameter, to obtain the GTP Node B be the TEID-UB that distributed of GTP-U tunnel and be stored in self node according to described default function f (TEID)=TEID+1 with the TEID-CB in the response message of GTP Node B for step 206, GTP node A.
By above-mentioned steps, a GTP-C tunnel and a GTP-U tunnel between GTP node A and GTP Node B, have been set up.
In technique scheme, when the TEID value in the GTP-C tunnel of arbitrary GTP node needs to upgrade, also need to upgrade the TEID value in its corresponding GTP-U tunnel.For example, when the TEID-CA value of GTP node A is upgraded, also need to upgrade its TEID-UA value, concrete grammar is identical with the method for above-mentioned acquisition TEID-UA, that is: GTP node A is new TEID-CA value of GTP-C tunnel distributing, GTP node A with the TEID-CA value after upgrading as input parameter, obtain the new TEID value in GTP-U tunnel of GTP node A according to described default function f (TEID), and pass through the new TEID value in the GTP-C tunnel of the described GTP node of its opposite end of GTP-C message informing GTP Node B A; The GTP Node B utilizes the newly assigned TEID-CA value of GTP node A as input parameter, obtains the TEID value in the newly assigned GTP-U of GTP node A tunnel and is stored in self node according to described default function f (TEID).
In addition, when the TEID in GTP-U tunnel need upgrade, method and above-mentioned update method were similar, needed to upgrade earlier the GTP-C tunnel, and the example that is updated to the TEID of GTP Node B describes this renewal process below:
The GTP Node B is new GTP-C tunnel TEID value of its GTP-C tunnel distributing, and the GTP Node B as input parameter, obtains the TEID value in the new GTP-U tunnel of GTP Node B with the TEID value in described new GTP-C tunnel according to described default function; Afterwards, the GTP Node B is by the TEID value in the described new GTP-C tunnel of its peer node of GTP-C message informing GTP node A, GTP node A with the TEID value in the new GTP-C tunnel of GTP Node B as input parameter, obtain according to described default function the GTP Node B new GTP-U tunnel the TEID value and be stored in self node.
The present invention also provides a kind of equipment that distributes Tunnel End Point Identifier, and this equipment is located in each GTP node, and it comprises:
Start module 301, be used for when setting up GTP-C and GTP-U tunnel, triggering the execution of this end node distribution module 302 and peer node generation module 303;
This end node distribution module 302 is used for when setting up the GTP-C tunnel, distributes the Tunnel End Point Identifier TEID in a GTP-C tunnel, exports it to storage module 306 and sending module 304, triggers sending module 304 and sends it to peer node; Simultaneously when setting up the GTP-U tunnel, the TEID value in the GTP-C tunnel that distributes with this end node is as input parameter, obtain according to the function of presetting the local terminal node the GTP-U tunnel the TEID value and export storage module 306 to; Described function is the common function that uses of all nodes in the system;
In actual applications, when the TEID value in the GTP-C tunnel of this end node is upgraded, described end node distribution module 302 can also be used to redistribute the TEID in a new GTP-C tunnel, export it to storage module 306 and sending module 304, trigger sending module 304 and send it to peer node, be used for TEID value with the new GTP-C tunnel of this end node as input parameter, obtain according to described default function the local terminal node new GTP-U tunnel the TEID value and export storage module 306 to;
Peer node generation module 303, be used for obtaining the TEID value in the GTP-C tunnel of peer node from storage module, with it as input parameter, obtain according to described default function peer node the GTP-U tunnel the TEID value and be stored in the storage module of self node;
In actual applications, when the TEID value in the GTP-C tunnel of peer node is upgraded by after the TEID value in its new GTP-C tunnel of this end node of GTP-C message informing, peer node generation module 303 can also be used for obtaining from storage module 306 the TEID value in the new GTP-C tunnel of peer node, with it as input parameter, obtain according to described default function peer node new GTP-U tunnel the TEID value and export in the storage module 306.
By adopting technique scheme, each GTP node utilizes the TEID value in GTP-C tunnel, the TEID value of distributing the GTP-U tunnel by the described default function of system, make the TEID value in this GTP-U tunnel need in GTP-C message, not be notified to the peer node in this GTP-U tunnel, thereby simplified GTP protocol signaling structure, and accelerated the process of setting up in GTP-U tunnel.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1, a kind of method of distributing Tunnel End Point Identifier is characterized in that, this method may further comprise the steps:
One general packet wireless service tunnel protocol GTP node distributes the Tunnel End Point Identifier TEID in a GTP-C tunnel, and notifies the peer node of described GTP node on described tunnel when setting up GTP control plane GTP-C tunnel;
Described GTP node is when setting up GTP user plane GTP-U tunnel, and the TEID value of utilizing its GTP-C tunnel obtains the TEID value in the GTP-U tunnel of described GTP node as input parameter according to default function; Described function is the common function that uses of all GTP nodes in the system, and its input and output are mapping relations one by one;
The peer node of described GTP node is when setting up the GTP-U tunnel, and the TEID value in GTP-C tunnel of utilizing described GTP node is as input parameter, obtain according to described default function described GTP node the GTP-U tunnel the TEID value and be stored in self node.
2, method according to claim 1, it is characterized in that, further comprise: when the TEID value in the GTP-C tunnel of described GTP node is upgraded, described GTP node is new GTP-C tunnel TEID value of its GTP-C tunnel distributing, described GTP node as input parameter, obtains the TEID value in the new GTP-U tunnel of described GTP node with the TEID value in described new GTP-C tunnel according to described default function; Described GTP node is by the TEID value in the described new GTP-C tunnel of its peer node of message informing, peer node utilizes the TEID value in new GTP-C tunnel of described GTP node as input parameter, obtain according to described default function described GTP node new GTP-U tunnel the TEID value and be stored in self node.
3, method according to claim 1, it is characterized in that, the GTP-U tunnel of described GTP node further comprises: when need upgrade, described GTP node is the TEID value in a new GTP-C tunnel of its GTP-C tunnel distributing, described GTP node as input parameter, obtains the TEID value in the new GTP-U tunnel of described GTP node with the TEID value in described new GTP-C tunnel according to described default function; Described GTP node is by the TEID value in the described new GTP-C tunnel of its peer node of GTP-C message informing, peer node with the TEID value in the new GTP-C tunnel of described GTP node as input parameter, obtain according to described default function described GTP node new GTP-U tunnel the TEID value and be stored in self node.
4, a kind of equipment that distributes Tunnel End Point Identifier is characterized in that, comprising:
Start module, be used for when setting up GTP-C tunnel and GTP-U tunnel, triggering this end node distribution module and peer node generation module and carry out;
This end node distribution module is used for when setting up the GTP-C tunnel, distributes the TEID in a GTP-C tunnel, exports it to storage module, and sends it to peer node by sending module; When setting up the GTP-U tunnel, the TEID value in the GTP-C tunnel that distributes with this end node is as input parameter, obtain according to the function of presetting the local terminal node the GTP-U tunnel the TEID value and export storage module to; Described function is the common function that uses of all nodes in the system;
The peer node generation module is used for obtaining from storage module the TEID value in the GTP-C tunnel of peer node, with it as input parameter, obtain according to described default function peer node the GTP-U tunnel the TEID value and be stored in the storage module;
Sending module is used for the TEID in the GTP-C tunnel of this end node of this end node distribution module output is sent to peer node;
Receiver module is used to receive the TEID in the GTP-C tunnel of peer node, and exports in the storage module;
Storage module is used to store the TEID in GTP-C tunnel of this end node of this end node distribution module output and the TEID value in GTP-U tunnel; Be used to store the TEID in GTP-C tunnel of the peer node of receiver module output, be used to store the TEID in GTP-U tunnel of the peer node of peer node generation module output.
5, equipment according to claim 4 is characterized in that,
Described end node distribution module, be further used for when the TEID value in the GTP-C tunnel of this end node is upgraded, the TEID that distributes a new GTP-C tunnel, export it to storage module, be used for TEID value with the new GTP-C tunnel of this end node as input parameter, obtain according to described default function the local terminal node new GTP-U tunnel the TEID value and export storage module to;
Described peer node generation module, be further used for when the TEID value in the GTP-C tunnel of peer node is upgraded, from storage module, obtain the TEID value in the new GTP-C tunnel of peer node, with it as input parameter, obtain according to described default function peer node new GTP-U tunnel the TEID value and output storage module in.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103092939A (en) * | 2013-01-09 | 2013-05-08 | 大唐移动通信设备有限公司 | Management method and device of control plane tunnel panel point identification |
| CN106792664A (en) * | 2016-12-09 | 2017-05-31 | 中国科学院计算技术研究所 | A kind of method for generating dynamic GTP tunnel |
| WO2018059223A1 (en) * | 2016-09-30 | 2018-04-05 | 华为技术有限公司 | Communication method and device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200420049A (en) * | 2002-10-15 | 2004-10-01 | Qualcomm Inc | Method and apparatus for the use of micro-tunnels in a communications system |
| US7386630B2 (en) * | 2003-04-30 | 2008-06-10 | Nokia Corporation | Using policy-based management to support Diffserv over MPLS network |
| CN100512264C (en) * | 2004-07-20 | 2009-07-08 | 华为技术有限公司 | Distribution method of control plane tunnel endpoine identifier (TEID) and system thereof |
| KR100778347B1 (en) * | 2006-12-06 | 2007-11-22 | 한국전자통신연구원 | Apparatus and method for managing tunnel source information in ipv6 having decentralization style |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103092939A (en) * | 2013-01-09 | 2013-05-08 | 大唐移动通信设备有限公司 | Management method and device of control plane tunnel panel point identification |
| CN103092939B (en) * | 2013-01-09 | 2015-11-04 | 大唐移动通信设备有限公司 | A kind of management method of chain of command tunnel nodes mark and device |
| WO2018059223A1 (en) * | 2016-09-30 | 2018-04-05 | 华为技术有限公司 | Communication method and device |
| CN107889154A (en) * | 2016-09-30 | 2018-04-06 | 华为技术有限公司 | A kind of communication means and device |
| CN106792664A (en) * | 2016-12-09 | 2017-05-31 | 中国科学院计算技术研究所 | A kind of method for generating dynamic GTP tunnel |
| CN106792664B (en) * | 2016-12-09 | 2020-03-31 | 中国科学院计算技术研究所 | Method for generating dynamic GTP tunnel |
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| TR01 | Transfer of patent right |
Effective date of registration: 20210608 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |