CN103747502A

CN103747502A - Method and system for processing GTP tunnel

Info

Publication number: CN103747502A
Application number: CN201410054806.9A
Authority: CN
Inventors: 薛淼; 符刚; 朱斌; 马瑞涛; 姜先贵; 刘牧寅; 吴琼
Original assignee: China United Network Communications Group Co Ltd; China Information Technology Designing and Consulting Institute Co Ltd
Current assignee: China United Network Communications Group Co Ltd; China Information Technology Designing and Consulting Institute Co Ltd
Priority date: 2014-02-18
Filing date: 2014-02-18
Publication date: 2014-04-23
Anticipated expiration: 2034-02-18
Also published as: CN103747502B

Abstract

The invention discloses a method and a system for processing a GTP (General Packet Radio Service Tunnelling Protocol) tunnel and relates to the technical field of a communication network. The method and the system are used for solving the problem of poor expansibility of a GTP tunnel endpoint. According to the embodiment of the invention, a GTP tunnel establishing request is acquired by an Openflow controller; the Openflow controller is equipment with a control plane function in the GTP tunnel endpoint; the Openflow controller establishes the GTP tunnel by the GTP tunnel establishing request, wherein the GTP tunnel establishing request comprises generation of relative parameters of the GTP tunnel; a target expanded Openflow switch is equipment in the GTP tunnel, which has a data plane function in the GTP tunnel endpoint; the Openflow controller sends the relative parameters of the GTP tunnel to the target expanded Openflow switch. The scheme provided by the embodiment of the invention is suitable for being adopted when data is transmitted.

Description

A kind of processing method of GTP tunnel and system

Technical field

The present invention relates to communication network technology field, relate in particular to a kind of processing method and system of GTP tunnel.

Background technology

General packet radio service technology tunnel protocol (General Packet Radio Service Tunnelling Protocol, GTP) be that mobile core network (comprises general packet radio service technology (General Packet Radio Service, GPRS)/universal mobile telecommunications system (Universal Mobile Telecommunications System, data core net (the Evolved Packet Core of UMTS)/evolution, EPC)) important protocol, its multiple interfaces at mobile core network have use.GTP is mainly applied to tunnel management, mobile management and transfer of data.The application layer of GTP in protocol stack, it comprises three mutation, is respectively general packet radio service technology tunneling protocol for control plane (GTP-C) (GTP Control, GTP-C), general packet radio service technology tunnel protocol data surface (GTP User, GTP-U) and GTP ' (GTP Prime).Wherein, GTP-C is the control section of GTP, is responsible for foundation, the deletion in GTP-U tunnel and upgrades, the accessibility of checking mobile core network gateway.GTP-U is responsible for the carrying of data, by encapsulation and decapsulation business datum, and the overlay transmission of finishing service data between a pair of endpoint of a tunnel.GTP ' for transmitting metering data between mobile core network and charging gateway.

GTP tunnel need to complete encapsulation and the decapsulation to business datum in tunnel starting point and terminal.Endpoint of a tunnel can be thought ALG.Existing GTP agreement often makes GTP-C and GTP-U experience same node point, and GTP tunnel end points of the prior art comprises the function of GTP tunnel chain of command and GTP tunnel data surface.With the GTP tunnel in 2G/3G network, be established as example, the foundation of GTP tunnel has two sections, one section is the GTP tunnel between radio network controller (Radio Network Controller, RNC) and GPRS serving GPRS support node (Serving GPRS Support Node, SGSN); One section is the GTP tunnel between SGSN and GPRS Support Node (Gateway GPRS Support Node, GGSN).Wherein subscriber equipment (User Equipment, UE) to RNC, send block data protocol context (Packet Data Protocol context, PDP context) activation request, RNC generates the GTP tunnel request of setting up of the IP address of carrying SGSN according to this PDP context activation request, and send to SGSN by setting up this GTP tunnel request, after SGSN receives this GTP tunnel request, generate and send to GGSN on the one hand the request of setting up GTP tunnel of the IP address of carrying GGSN, to RNC feedback first, set up GTP tunnel response on the other hand, this first sets up the parameter of having carried the GTP tunnel between RNC and SGSN in GTP tunnel response (as GTP tunnel version number, GTP tunnel sign etc.), and GGSN is after receiving the request of setting up GTP tunnel of SGSN transmission, by the request of setting up GTP tunnel, to SGSN feedback second, set up GTP tunnel response, this second sets up the parameter (as GTP tunnel version number, GTP tunnel sign etc.) of having carried the GTP tunnel between GGSN and SGSN in GTP tunnel response.When consulting the parameter of the GTP tunnel between RNC and SGSN between RNC and SGSN, and after consulting the parameter of the GTP tunnel between SGSN and GGSN between SGSN and GGSN, show that RNC and SGSN establish the GTP tunnel between RNC and SGSN jointly, SGSN and GGSN establish the GTP tunnel between SGSN and GGSN jointly.

But, because the GTP tunnel of setting up in the prior art two ends end points that is this GTP tunnel is consulted to set up jointly.When adopting prior art while setting up GTP tunnel, two ends end points intercorrelation signaling that need to this GTP tunnel has been consulted foundation jointly; When adopting prior art modification or deleting GTP tunnel, need the two ends end points intercorrelation signaling of this GTP tunnel jointly to consult modification or the deletion to GTP tunnel, thereby strengthened the complexity of processing GTP tunnel.

Summary of the invention

Embodiments of the invention provide a kind of processing method and system of GTP tunnel, for solving the problem that reduces the complexity of processing GTP tunnel.

On the one hand, embodiments of the invention provide a kind of method of processing of GTP tunnel, comprising:

Openflow controller obtains sets up the request of general packet radio service technology tunnel protocol GTP tunnel, and described Openflow controller is the equipment that possesses the chain of command function in GTP tunnel end points;

Described Openflow controller is set up GTP tunnel request and is set up GTP tunnel by described, wherein set up GTP tunnel request and comprise the relevant parameter that generates described GTP tunnel, the relevant parameter of described GTP tunnel comprises a GTP route flow table clause and down hop encapsulation parameter record entry, the stream table clause that a described GTP route flow table clause is used while being the Openflow switch transmission data of target expansion, a described GTP route flow table clause at least comprises the general packet radio service technology tunnel protocol data surface GTP-U Version of version number, general packet radio service technology tunnel protocol data surface Tunnel End Point Identifier GTP-UTEID, the stream table clause using when described down hop encapsulation parameter record entry is the Openflow switch encapsulation of data of described target expansion, the Openflow switch of described target expansion is as the equipment that possesses the data surface function in described GTP tunnel end points in described GTP tunnel,

Described Openflow controller sends to the relevant parameter of described GTP tunnel the Openflow switch of described target expansion, so that the Openflow switch of described target expansion is according to a described GTP route flow table clause and described down hop encapsulation parameter record entry transmission data.

In another embodiment of the present invention, described Openflow controller is set up GTP tunnel request and is set up GTP tunnel by described, comprising:

Described Openflow controller is selected the Openflow switch for the described target expansion of described GTP tunnel;

Described Openflow controller obtains available network link parameter, and described available network link parameter at least comprises corresponding IP address, the port numbers of Openflow switch of described target expansion;

Described Openflow controller is determined the parameter of setting up described GTP tunnel by described available network link parameter, the described parameter of setting up described GTP tunnel comprises IP address, two ends, two ends port numbers, GTP-U Version, the GTP-U TEID that described GTP tunnel is corresponding;

Described Openflow controller generates a GTP route flow table clause and down hop encapsulation parameter record entry by described available network link parameter and the described parameter of setting up described GTP tunnel.

In another embodiment of the present invention, the relevant parameter of described GTP tunnel also comprises the 2nd GTP route flow table clause, the stream table clause that described the 2nd GTP route flow table clause is used while being standard Openflow switch transmission data, described standard Openflow switch is all standard Openflow switches of described Openflow controller management;

After described Openflow controller obtains the available network link parameter of Openflow switch of described target expansion, also comprise:

Described Openflow controller generates described the 2nd GTP route flow table clause by the described parameter of setting up described GTP tunnel;

Described Openflow controller sends to standard Openflow switch by described the 2nd GTP route flow table clause, so that described standard Openflow switch is according to described the 2nd GTP route flow table clause transmission data.

In another embodiment of the present invention, at described Openflow controller, by described, to set up after GTP tunnel request sets up GTP tunnel, described method also comprises:

Described Openflow controller obtains result of decision information, described result of decision information is used to indicate carries out particular procedure to data corresponding to specific transactions, and described particular procedure is following any one form: for data corresponding to described specific transactions are carried out transcoding, are that data corresponding to described specific transactions are carried out flow isolation, sent warning reminder message or carry out advertisement video for data corresponding to described specific transactions and intercut to user equipment (UE);

Described Openflow controller is that the data that described specific transactions is corresponding generate specific GTP route flow table clause according to described result of decision information;

Described Openflow controller is selected the target criteria Openflow switch for described GTP tunnel;

Described Openflow controller sends to described target criteria Openflow switch by described specific GTP route flow table clause.

In another embodiment of the present invention, described method also comprises:

Described Openflow controller receives strategy and sends to policy information with charging rule functions unit PCRF;

Described Openflow controller, by described available network link parameter and described policy information, generates the first tactful GTP route flow table clause, down hop encapsulation parameter strategy record entry and the second tactful GTP route flow table clause.

Described Openflow controller obtains the GTP tunnel request of revising, by described modification GTP tunnel request, revise GTP tunnel, wherein revise GTP tunnel request and comprise the relevant parameter that generates renewal GTP tunnel, the relevant parameter of described renewal GTP tunnel comprises the first renewal GTP route flow table clause, down hop encapsulation parameter upgrades record entry and second and upgrades GTP route flow table clause, the stream table clause that the Openflow switch that described the first renewal GTP route flow table clause is described target expansion is used while transmitting data, described down hop encapsulation parameter upgrades the stream table clause using when record entry is the Openflow switch encapsulation of data of described target expansion, described second upgrades the stream table clause using when GTP route flow table clause is described standard Openflow switch transmission data, by corresponding the relevant parameter of described renewal GTP tunnel the Openflow switch and the described standard Openflow switch that send to described target expansion, or,

Described Openflow controller obtains deleting GTP tunnel request, and wherein, described deleting GTP tunnel request comprises the sign of indicating deleting GTP tunnel; By the sign of described deleting GTP tunnel, delete corresponding GTP tunnel; Notify Openflow switch and/or the described target criteria Openflow switch of described target expansion, so that Openflow switch and the described target criteria Openflow switch of the expansion of described target are deleted accordingly about parameter corresponding to GTP tunnel corresponding to described deleting GTP tunnel request.

On the other hand, embodiments of the invention provide a kind of system of processing of GTP tunnel, described system comprises the Openflow switch of Openflow controller, target expansion, wherein said Openflow controller is the equipment that possesses the chain of command function in GTP tunnel end points, the Openflow switch of described target expansion is as the equipment that possesses the data surface function in described GTP tunnel end points in described GTP tunnel, comprising:

Described Openflow controller, for obtaining the general packet radio service technology tunnel protocol GTP tunnel request of setting up, by described, set up GTP tunnel request and set up GTP tunnel, wherein set up GTP tunnel request and comprise the relevant parameter that generates described GTP tunnel, the relevant parameter of described GTP tunnel comprises a GTP route flow table clause and down hop encapsulation parameter record entry, the stream table clause that a described GTP route flow table clause is used while being the Openflow switch transmission data of target expansion, a described GTP route flow table clause at least comprises the general packet radio service technology tunnel protocol data surface GTP-U Version of version number, general packet radio service technology tunnel protocol data surface Tunnel End Point Identifier GTP-U TEID, the stream table clause using when described down hop encapsulation parameter record entry is the Openflow switch encapsulation of data of described target expansion, the relevant parameter of described GTP tunnel is sent to the Openflow switch of target expansion,

The Openflow switch of described target expansion, sends to a described GTP route flow table clause and/or described down hop encapsulation parameter record entry for receiving described Openflow controller; And according to a described GTP route flow table clause and described down hop encapsulation parameter record entry transmission data.

In another embodiment of the present invention, described Openflow controller, also for selecting the Openflow switch for the described target expansion of described GTP tunnel; Obtain available network link parameter, described available network link parameter at least comprises corresponding IP address, the port numbers of Openflow switch of described target expansion; By described available network link parameter, determine the parameter of setting up described GTP tunnel, the described parameter of setting up described GTP tunnel comprises source IP address, object IP address, source port number, destination slogan, GTP-U Version, the GTP-U TEID that described GTP tunnel is corresponding; By described available network link parameter and the described parameter of setting up described GTP tunnel, generate a GTP route flow table clause and down hop encapsulation parameter record entry.

Described Openflow controller, also for generating described the 2nd GTP route flow table clause by the described parameter of setting up described GTP tunnel; Described the 2nd GTP route flow table clause is sent to described standard Openflow switch;

Described system also comprises: target criteria Openflow switch, and wherein said target criteria Openflow switch is the described standard Openflow switch that participates in the data in the described GTP tunnel of transmission;

Described Openflow controller, also for obtaining result of decision information, described result of decision information is used to indicate carries out particular procedure to data corresponding to specific transactions, and described particular procedure is following any one form: for data corresponding to described specific transactions are carried out transcoding, are that data corresponding to described specific transactions are carried out flow isolation, sent warning reminder message or carry out advertisement video for data corresponding to described specific transactions and intercut to user equipment (UE); According to described result of decision information, be that the data that described specific transactions is corresponding generate specific GTP route flow table clause; And selection is for the target criteria Openflow switch of described GTP tunnel; Described specific GTP route flow table clause is sent to described target criteria Openflow switch;

Described target criteria Openflow switch, the described specific GTP route flow table clause sending for receiving described OPenflow controller.

In another embodiment of the present invention, described Openflow controller, the policy information also sending for receiving strategy and charging rule functions unit PCRF; By described available network link parameter and described policy information, generate the first tactful GTP route flow table clause, down hop encapsulation parameter strategy record entry and the second tactful GTP route flow table clause, and the Openflow switch that sends to described target to expand described the first tactful GTP route flow table clause, described down hop encapsulation parameter strategy record entry, described the second tactful GTP route flow table clause is sent to described standard Openflow switch;

The Openflow switch of described target expansion, described the first tactful GTP route flow table clause, the described down hop encapsulation parameter strategy record entry that also for receiving described Openflow controller, send;

Described target criteria Openflow switch, described the second tactful GTP route flow table clause also sending for receiving described Openflow controller;

Described Openflow controller, also for obtaining the GTP tunnel request of revising, by described modification GTP tunnel request, revise GTP tunnel, wherein revise GTP tunnel request and comprise the relevant parameter that generates renewal GTP tunnel, the relevant parameter of described renewal GTP tunnel comprises the first renewal GTP route flow table clause, down hop encapsulation parameter upgrades record entry and second and upgrades GTP route flow table clause, the stream table clause that the Openflow switch that described the first renewal GTP route flow table clause is described target expansion is used while transmitting data, described down hop encapsulation parameter upgrades the stream table clause using when record entry is the Openflow switch encapsulation of data of described target expansion, described second upgrades the stream table clause using when GTP route flow table clause is described standard Openflow switch transmission data, the relevant parameter of described renewal GTP tunnel is sent to Openflow switch and the described standard Openflow switch of described target expansion, obtain deleting GTP tunnel request, by described deleting GTP tunnel request, delete corresponding GTP tunnel, notify Openflow switch and/or the described target criteria Openflow switch of described target expansion, so that Openflow switch and the described target criteria Openflow switch of the expansion of described target are deleted accordingly about parameter corresponding to GTP tunnel corresponding to described deleting GTP tunnel request,

The Openflow switch of described target expansion, also for receiving the relevant parameter of the described renewal GTP tunnel that described Openflow controller sends; And according to the relevant parameter transmission data of described renewal GTP tunnel; Receive the first notice of deleting described GTP tunnel that described Openflow controller sends, wherein, the described first notice of deleting described GTP tunnel comprises the sign of deleting GTP tunnel, and the described first notice of deleting described GTP tunnel is the signaling that the Openflow switch of the described target expansion of indication is deleted described GTP tunnel; And delete the GTP tunnel of the sign correspondence of described deleting GTP tunnel by the described first notice of deleting described GTP tunnel;

Described target criteria Openflow switch, also for receiving the relevant parameter of the described renewal GTP tunnel that described Openflow controller sends; And according to the relevant parameter transmission data of described renewal GTP tunnel; Receive the second notice of deleting described GTP tunnel that described Openflow controller sends, wherein, the described second notice of deleting described GTP tunnel comprises the sign of deleting GTP tunnel, and the described second notice of deleting described GTP tunnel is the signaling that the described target criteria Openflow switch of indication is deleted described GTP tunnel; And delete the GTP tunnel of the sign correspondence of described deleting GTP tunnel by the described second notice of deleting described GTP tunnel.

The processing method of a kind of GTP tunnel that the embodiment of the present invention provides and system, by Openflow controller, obtained and set up the request of general packet radio service technology tunnel protocol GTP tunnel, Openflow controller is the equipment that possesses the chain of command function in GTP tunnel end points, Openflow controller is set up GTP tunnel by setting up GTP tunnel request, wherein set up GTP tunnel request and comprise the relevant parameter that generates GTP tunnel, the relevant parameter of GTP tunnel comprises a GTP route flow table clause and down hop encapsulation parameter record entry, the stream table clause that the one GTP route flow table clause is used while being the Openflow switch transmission data of target expansion, the one GTP route flow table clause at least comprises the general packet radio service technology tunnel protocol data surface GTP-U Version of version number, general packet radio service technology tunnel protocol data surface Tunnel End Point Identifier GTP-U TEID, the stream table clause using when down hop encapsulation parameter record entry is the Openflow switch encapsulation of data of target expansion, the Openflow switch of target expansion is as the equipment that possesses the data surface function in GTP tunnel end points in GTP tunnel, Openflow controller sends to the relevant parameter of GTP tunnel the Openflow switch of target expansion, so that the Openflow switch of target expansion is according to a GTP route flow table clause and down hop encapsulation parameter record entry transmission data.Often to bear the foundation of GTP tunnel with GTP tunnel end points in prior art, revise, delete and route forwarding function, thereby set up, revise, during deleting GTP tunnel, need to two ends endpoint device corresponding to this pending GTP tunnel jointly consult the processing to this pending GTP tunnel, thereby the problem that has strengthened the complexity of processing GTP tunnel is compared, the present invention is Fen Li with forwarding face by the chain of command of GTP tunnel end points, obtain the Openflow switch of Openflow controller and expansion, adopt the Openflow controller in the present invention can set up the GTP tunnel between each GTP tunnel end points, by the GTP tunnel that adopts Openflow controller to set up, also after being convenient to, Openflow controller completes modification or the deletion of the GTP tunnel to setting up before, thereby realized, reduce the complexity of processing GTP tunnel.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

A kind of GTP agreement chain of command and data surface separator frame composition based on Openflow that Fig. 1 provides for the embodiment of the present invention;

The stream table clause field schematic diagram of in the processing method of the GTP tunnel that Fig. 2 provides for the embodiment of the present invention, Openflow agreement being expanded;

The flow chart of the processing method of a kind of GTP tunnel that Fig. 3 provides for the embodiment of the present invention;

In the processing method of the GTP tunnel that Fig. 4 provides for the embodiment of the present invention, Openflow controller is set up the flow chart of another method of GTP tunnel;

The field schematic diagram of a GTP route flow table clause in the processing method of the GTP tunnel that Fig. 5 provides for the embodiment of the present invention;

Down hop encapsulation parameter record strip destination field schematic diagram in the processing method of the GTP tunnel that Fig. 6 provides for the embodiment of the present invention;

The field schematic diagram of the 2nd GTP route flow table clause in the processing method of the GTP tunnel that Fig. 7 provides for the embodiment of the present invention;

The flow chart of the processing method of the another kind of GTP tunnel that Fig. 8 provides for the embodiment of the present invention;

The flow chart of the processing method of another GTP tunnel that Fig. 9 provides for the embodiment of the present invention;

The GTP tunnel pipe control face Organization Chart separation with data surface in the EPC network of the processing method of the GTP tunnel that Figure 10 (a) provides for the embodiment of the present invention;

The flow chart of the processing method of a kind of GTP tunnel based on EPC network that Figure 10 (b) provides for the embodiment of the present invention;

The flow chart of the processing method of the another kind of GTP tunnel based on EPC network that Figure 10 (c) provides for the embodiment of the present invention;

The flow chart of the processing method of another GTP tunnel based on EPC network that Figure 11 provides for the embodiment of the present invention;

The GTP tunnel pipe control face Organization Chart separation with data surface in the 2G/3G network of the processing method of the GTP tunnel that Figure 12 (a) provides for the embodiment of the present invention;

The flow chart of the processing method of a kind of GTP tunnel based on 2G/3G network that Figure 12 (b) provides for the embodiment of the present invention;

The flow chart of the processing method of the another kind of GTP tunnel based on 2G/3G network that Figure 13 provides for the embodiment of the present invention;

The structural representation of the treatment system of a kind of GTP tunnel that Figure 14 provides for the embodiment of the present invention;

The structural representation of the treatment system of the another kind of GTP tunnel that Figure 15 provides for inventive embodiments.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

Fig. 1 is GTP agreement chain of command and the data surface separator frame composition based on Openflow, in Fig. 1,

110 is the integrated GTP functional node of traditional chain of command and data surface, and wherein 102 is chain of command functional module, and 101 is data surface functional module.101 according to the GTP-U agreement of standard, the encapsulation of finishing service data, decapsulation operation and package forward.102 are responsible for the foundation of GTP tunnel.102 set up in tunneling process, when consulting with other chains of command and the integrated GTP functional node of data surface, need to use standard GTP-C agreement, when consulting with GTP chain of command functional node (pure GTP-C functional node) 103, can use the GTP-C agreement of standard to hold consultation, also can adopt other agreements to hold consultation, as NAS signaling.

103 is that the independent GTP arranging controls functional node.103 corresponding one or more specific GTP-U data retransmission functional nodes, as 106.103 is the GTP-U tunnel negotiation process of establishing through 106.103 can be integrated with other network functions.

105 and 106 is the independent GTP forwarding capability node arranging, for the encapsulation to business datum, decapsulation.105 and 106 is OpenFlow switches of expansion, its adherence to standard OpenFlow agreement, and it can mate TEID and version the corresponding route data packets of GTP-U simultaneously.The OpenFlow controller of expansion can issue the stream table clause (a GTP route flow table clause and down hop encapsulation parameter record entry) that comprises GTP protocol parameter to 105 and 106.105 are connected by escape way with 104 with 106.105 and 106 also can be used as standard Openflow switch forwarding data.

104 is GTP-C function and OpenFlow controller aggregators, is Openflow controller.After foundation, modification, the deleting GTP tunnel request that 104 receptions 103 send or the foundation that receive 108 transmissions, modification, deleting GTP tunnel request, complete foundation, modification and the deletion of GTP tunnel.While 104 is issued to the relevant parameter of GTP tunnel the

OpenFlow switch

105 and 106 of expansion in the mode of OpenFlow stream table clause, complete GTP tunnel data surface Route establishment.104 can be only issues GTP tunnel route (a GTP route flow table clause and down hop encapsulation parameter record entry) to 105 and 106, also can to one or more standard Openflow switches 107, issue OpenFlow stream table clause (the 2nd GTP route flow table clause) simultaneously.104 also can only issue OpenFlow stream table clause to 107.

108 is strategy and charging rule functions unit (Policy and Charging Rules Function, PCRF) or meticulous business data flow policy control functions node.108 can be according to customer service attribute, as audio frequency, video traffic, interior network service, outer network service, high definition business, need transcoding business etc., triggers 104 foundation, modification or deleting GTP tunnel and different bottom routed paths.108 also can, according to user property, as user's intercommunication in roamer, net, gold medal Silver Subscriber, operating system version etc., require 104 to set up specific transmission route.

108 and 104 can independently arrange, and also can as required function be merged and be arranged.

109 for merging a node of Openflow controller and PCRF function, possesses the function that Openflow controller and PCRF have.

In GTP agreement chain of command and data surface separation architecture, the network elements such as 103,104,108 and 109 can with GTP forwarding capability node identical network in dispose, also can be deployed in the network that is different from GTP forwarding capability node.103,104,108 and 109 can be directly installed on hardware platform, also can be arranged on general-purpose platform with the form of virtual machine.103,104,108 and 109 can disperse to dispose separately, also can concentrate and be deployed to data center as required.The present embodiment does not all limit.

In GTP agreement chain of command and data surface separation architecture, chain of command interface has backwards compatibility completely, can guarantee and legacy network intercommunication, also can guarantee the intercommunication under roaming scence.

With reference to Fig. 1, can find out, adopt Openflow agreement that the chain of command of GTP tunnel end points is carried out separate with forwarding face; Accordingly, obtain the Openflow switch of Openflow controller and expansion, Openflow controller is used for setting up GTP tunnel, revises GTP tunnel and deleting GTP tunnel, the GTP tunnel transmission data of the Openflow switch of expansion for setting up by Openflow controller.

Concrete, adopt Openflow agreement that the GTP-C of GTP tunnel end points is separation with GTP-U function logic, the GTP-C of GTP tunnel end points is arranged separation with GTP-U function network element.Adopt Openflow agreement by the chain of command of GTP tunnel end points and the face of forwarding after separating, GTP controls function network element (being Openflow controller) and is responsible for GTP tunnel foundation, revises and deletes, and GTP forwarding capability network element (i.e. the Openflow switch of expansion) is responsible for GTP package forward.Wherein the Openflow switch of expansion also comprises encapsulation and the decapsulation operation to GTP packet.

GTP tunnel end points can be ALG, such as GTP tunnel end points can be gateway (Serving Gateway, S-GW), the grouped data network gateway (Packet Data Network Gateway, P-GW) in EPC network; Or GTP tunnel end points can be SGSN, GGSN in global system for mobile communications (Global System of Mobile communication, GSM)/UMTS network.

The present invention is separate by adopting Openflow agreement that the chain of command of general packet radio service technology tunnel protocol GTP tunnel end points and forwarding face are carried out, and obtains the Openflow switch of Openflow controller and expansion; Wherein, described Openflow controller is used for setting up GTP tunnel, revises GTP tunnel and deleting GTP tunnel, the GTP tunnel transmission data of the Openflow switch of described expansion for setting up by described Openflow controller.By adopting the foundation of Openflow controller, modification or deleting GTP tunnel, can reduce the complexity of processing GTP tunnel.。

It should be noted that, the present invention is in order to support the forwarding to GTP-U packet (type of business datum), Fig. 2 has shown the expansion that Openflow agreement is carried out, make it in stream table entry match territory, support the Version of GTP-U version number and GTP-U Tunnel End Point Identifier (Tunnel Endpoint Identifier, TEID).Support the Openflow switch that GTP-U TEID forwards to need to mate the GTP-U Version of 3 bits and the GTP-U TEID of 32 bits.

Wherein, in Fig. 2, 201 ingress ports, 202 source MACs, 203 target MAC (Media Access Control) address, 204 VLAN IDs, 205 multi-protocol label switching (T-MPLS) labels, 206 multiprotocol label switching traffic classification (Traffic Class, TC), 207 source IP addresss, 208 object IP addresses, 209 transmission control protocols/business datum packet protocol/SCTP source port number, 210 transmission control protocols/business datum packet protocol/SCTP destination slogan, be the matching domain that in prior art, Openflow agreement exists, and 211GTP-U version number and 212GTP-U Tunnel End Point Identifier are the matching domain of expansion.

Optionally, the present invention is except these two matching domains of expansion, and in all right matched data packet header any other territories of 201 to 210, thereby determines the forwarding operation of carrying out.

Fig. 3 describes a kind of processing method of GTP tunnel, and the method is as follows:

301, Openflow controller obtains the GTP tunnel request of setting up, and Openflow controller is the equipment that possesses the chain of command function in GTP tunnel end points.

In this step, set up GTP tunnel request and comprise qos parameter and other customer parameters, wherein, other customer parameters can comprise the network type, cell number at user place etc.

Wherein, as an example of 2G/3G example, describe, Openflow controller obtains the mode of setting up GTP tunnel request can two kinds.

First kind of way is: Openflow controller obtains by subscriber equipment (User Equipment, the process that the GTP tunnel of UE) initiating is set up, wherein, UE sends and adheres to request to base station, base station is adhered to this request and is sent to MME, MME generates and sets up GTP tunnel request by adhering to request, and this is set up to GTP tunnel request and sends to S-GW, then sends to Openflow controller by S-GW.

The second way is: Openflow controller receives the triggering command that PCRF sends, and this triggering command is used for triggering Openflow controller and generates the GTP tunnel request of setting up.

302, Openflow controller is set up GTP tunnel by setting up GTP tunnel request, wherein set up GTP tunnel request and comprise the relevant parameter that generates GTP tunnel, the relevant parameter of GTP tunnel comprises a GTP route flow table clause and down hop encapsulation parameter record entry, the stream table clause that the one GTP route flow table clause is used while being the Openflow switch transmission data of target expansion, the one GTP route flow table clause at least comprises the general packet radio service technology tunnel protocol data surface GTP-U Version of version number, general packet radio service technology tunnel protocol data surface Tunnel End Point Identifier GTP-U TEID, the stream table clause using when down hop encapsulation parameter record entry is the Openflow switch encapsulation of data of target expansion, source GTP tunnel end points and object GTP tunnel end points are the Openflow switch of the target expansion of the data surface function possessing in GTP tunnel end points.

First Openflow controller need to be selected the Openflow switch for the target expansion of GTP tunnel; Then Openflow controller obtains available network link parameter, and available network link parameter at least comprises corresponding IP address, the port numbers of Openflow switch of target expansion.Openflow controller is determined the parameter of setting up GTP tunnel by available network link parameter, the parameter of setting up GTP tunnel comprises IP address, two ends, two ends port numbers, GTP-U Version, the GTP-U TEID that GTP tunnel is corresponding; By available network link parameter and the parameter of setting up GTP tunnel, generate a GTP route flow table clause and down hop encapsulation parameter record entry.

Concrete, first Openflow controller selects the two ends end points for each GTP tunnel.Take 2G/3G as example, Openflow controller need to be set up two sections of GTP tunnels, and one section is the GTP tunnel between RNC and SGSN, and one section is the GTP tunnel between SGSN and GGSN.Wherein, Openflow controller has merged the chain of command on SGSN and GGSN, thereby Openflow controller selects one of them SGSN-data(only to possess the SGSN of data surface) and GGSN-data(only possess the GGSN of data surface) as the Openflow switch of target expansion.Then Openflow controller obtains available network link parameter, and available network link parameter at least comprises this SGSN-data and corresponding IP address, port numbers, GTP-U Version, the GTP-U TEID of GGSN-data; By available network link parameter and the parameter of setting up GTP tunnel, generate a GTP route flow table clause and down hop encapsulation parameter record entry.

It should be noted that, because the chain of command of RNC is not fused in Openflow controller, when Openflow controller is set up the GTP tunnel between RNC and SGSN, need common negotiation of Openflow controller and RNC to set up; The chain of command of SGSN and GGSN is all fused in Openflow controller, when Openflow controller is set up the GTP tunnel between SGSN and GGSN, only need Openflow controller to obtain voluntarily to set up relevant information (available network link parameter, set up the parameter of the GTP tunnel etc.) foundation of complete independently to the GTP tunnel between SGSN and GGSN of GTP tunnel.

The field of the one GTP route flow table clause can be with reference to figure 5.Described in Fig. 5, can find out in a GTP route flow table clause and should at least comprise 501 source IP addresss, 502 object IP addresses, 503 source port numbers, 504 destination slogans, 505GTP-U version number and 506GTP-U Tunnel End Point Identifier.

Down hop encapsulation parameter record strip destination field can be with reference to figure 6.Described in Fig. 6, can find out that down hop encapsulation parameter record entry comprises the GTP-U TEID that 601 Hash HashID signs, 602 source IP addresss, 603 object IP addresses, 604 source port numbers, 605 destination slogans and 606 down hop tunnels are used.The TEID that Hash ID is used according to the GTP-U data packet head information retrieval down hop tunnel of receiving for the Openflow switch of target expansion.

303, Openflow controller sends to the relevant parameter of GTP tunnel the Openflow switch of target expansion, so that the Openflow switch of target expansion is according to a GTP route flow table clause and down hop encapsulation parameter record entry transmission data.

Specifically, when data message be by RNC to SGSN during again to GGSN, Openflow controller sends to object GTP end points in GTP tunnel by a relevant GTP route flow table clause, as SGSN and GGSN.Wherein, send to a GTP route flow table clause of SGSN to comprise: source IP address (the IP address of RNC), object IP address (the IP address of SGSN), source port number (port numbers of RNC), destination slogan (port numbers of SGSN), GTP-U version number and GTP-U Tunnel End Point Identifier.Send to a GTP route flow table clause of GGSN to comprise: source IP address (the IP address of SGSN), object IP address (the IP address of GGSN), source port number (port numbers of SGSN), destination slogan (port numbers of GGSN), GTP-U version number and GTP-U Tunnel End Point Identifier.Openflow controller sends to GTP end points in source in next GTP tunnel by relevant down hop encapsulation parameter record entry, as SGSN.Wherein, send to the down hop encapsulation parameter record entry of SGSN can comprise the GTP tunnel sign between GTP-U TEID(SGSN and the GGSN using in Hash ID, source IP address (the IP address of SGSN), object IP address (the IP address of GGSN), source port number (port numbers of SGSN), destination slogan (port numbers of GGSN) and down hop tunnel).Vice versa, do not do too much and repeat here.

Be understandable that, the Openflow switch of target expansion adopts a GTP route flow table clause transmission packet, adopts the encapsulation of the complete paired data bag of down hop encapsulation parameter record entry.Particularly, when the Openflow switch of any one target expansion receives packet, adopt GTP agreement this packet to be carried out decapsulation and obtained the header packet information of packet, by this header packet information, mate with a GTP route flow table clause of local storage, obtain the GTP route flow table clause mating with this header packet information, by operation information (Action) in a GTP route flow table clause of this coupling, obtain next step operation to this packet.Instantly single stepping is for being sent to next port, and adopt GTP agreement to encapsulate (can to regard as and continue to transmit the information of data by GTP tunnel, the Openflow switch that this target expansion is described need to adopt next GTP tunnel to continue transmission data) time, adopt header packet information to mate with the Hash ID in down hop encapsulation parameter record entry the Openflow switch of this target expansion, obtain the down hop encapsulation parameter record entry of mating with this header packet information, then according to the information in the down hop encapsulation parameter record entry of this coupling, the packet after decapsulation is encapsulated again.Again after encapsulation, according to operation information in a GTP route flow table clause, continue to issue data.

The present invention is Fen Li with forwarding face by the chain of command of GTP tunnel end points, obtain the Openflow switch of Openflow controller and expansion, adopt the Openflow controller in the present invention can set up the GTP tunnel between each GTP tunnel end points, by the GTP tunnel that adopts Openflow controller to set up, also after being convenient to, Openflow controller completes modification or the deletion of the GTP tunnel to setting up before, thereby realized, reduces the complexity of processing GTP tunnel.

Description in corresponding step 302, optional, Openflow controller can receive PCRF and send to policy information; Openflow controller, by available network link parameter and policy information, generates the first tactful GTP route flow table clause, down hop encapsulation parameter strategy record entry and the second tactful GTP route flow table clause.Corresponding Openflow controller sends to the first tactful GTP route flow table clause, down hop encapsulation parameter strategy record entry the Openflow switch of target expansion, and second tactful GTP route Liu table clause is sent to standard Openflow switch.

Optionally, Openflow controller is also for generating the 2nd GTP route flow table clause by this parameter of setting up GTP tunnel, and the 2nd GTP route flow table clause is sent to standard Openflow switch (the 2nd GTP route flow table clause transmission GTP packet that standard Openflow switch issues by Openflow controller, without adopting GTP agreement to encapsulate to GTP packet or the operation such as decapsulation), the stream table clause that the 2nd GTP route flow table clause is used while being standard Openflow switch transmission data.Standard Openflow switch is all Openflow switches of Openflow controller management.Can find out, Openflow controller sends to the 2nd GTP route flow table clause generating all standard Openflow switches of management.During the 2nd GTP route flow table clause corresponding to the packet that receives whenever target criteria Openflow switch identification, according to the information in packet header packet information (as object IP address etc.), mate with all the 2nd GTP route flow table clauses of local storage, thereby obtain the 2nd corresponding GTP route flow table clause.

Concrete, the field format of the 2nd GTP route flow table clause can be with reference to figure 7.Described in Fig. 7, can find out that the 2nd GTP route flow table clause comprises wherein one or more: 701 source IP addresss, 702 object IP addresses, 703 source port numbers and 704 destination slogans.

As shown in Figure 4, in another embodiment of the present invention, after the step 301 in Fig. 3, after Openflow controller obtains and sets up GTP tunnel request, also comprise:

304, Openflow controller obtains result of decision information.

Result of decision information is carried out particular procedure for the data that specific transactions is corresponding are described, particular procedure includes but not limited to following any one form: for data corresponding to specific transactions are carried out transcoding, carried out flow isolation, send warning reminder message or carry out that advertisement video intercuts etc. for data corresponding to specific transactions to subscriber equipment (User Equipment, UE) for data corresponding to specific transactions.

Wherein, the mode that Openflow controller obtains result of decision information can have two kinds:

First kind of way, Openflow controller receives the result of decision information that PCRF sends.

The second way, Openflow controller receives the testing result generation strategy of ext nal network element (as DPI).

305, Openflow controller is that specific transactions generates specific GTP route flow table clause according to result of decision information.

It should be noted that, specific GTP route flow table clause is used to indicate target criteria Openflow switch the business datum of transmission is sent to network middleware, its position of this network middleware is in GSM, UMTS or EPC inside, deployment way can be that unique host is disposed the deployment of Huo Yun center, its function completes to be processed and operation business datum in GTP-U tunnel in core net, as to user speech, video data carries out transcoding before entering terminal, before business datum, insert the video that particular message appearance form includes but not limited to that operator or third party provide, audio frequency, the ad contents such as text or prompting, warning content etc.

Network middleware can be transcoding server, media insertion, fire compartment wall, DPI etc.

306, Openflow controller is selected the target criteria Openflow switch for GTP tunnel.

307, Openflow controller sends to target criteria Openflow switch by specific GTP route flow table clause.

Be understandable that, Openflow controller sends to specific GTP route flow table clause all target criteria Openflow switches of selection.

Specific GTP route flow table clause is identical with the effect of the 2nd GTP route flow table clause, the field comprising is also identical, different is, specific GTP route flow table clause is higher than the stream list item priority of the 2nd GTP route flow table clause, such as, when specific GTP route flow table clause that coupling dynamics is identical and the 2nd GTP route flow table clause have been stored in a certain target criteria Openflow switch this locality, at this moment this target criteria Openflow switch adopts the higher specific GTP route flow table clause of stream list item priority to transmit data.

As shown in Figure 8, in another embodiment of the present invention, the present invention also provides a kind of processing method of GTP tunnel, and the method is as follows:

801, Openflow controller obtains the GTP tunnel request of revising.

Wherein, Openflow controller obtains the mode of revising GTP tunnel request and obtains that to set up the mode of GTP tunnel request identical, does not repeat them here.

802, Openflow controller re-establishes GTP tunnel by revising GTP tunnel request.

Wherein re-establish GTP tunnel and comprise the relevant parameter that generates renewal GTP tunnel, the relevant parameter that upgrades GTP tunnel comprises that the first renewal GTP route flow table clause, down hop encapsulation parameter upgrade record entry and second and upgrade GTP route flow table clause.First upgrades the stream table clause using when GTP route flow table clause is the Openflow switch transmission data of target expansion, down hop encapsulation parameter upgrades the stream table clause using when record entry is the Openflow switch transmission data of target expansion, and second upgrades the stream table clause using when GTP route flow table clause is target criteria Openflow switch transmission data.

Openflow controller re-establishes GTP tunnel by the request of modification GTP tunnel and specifically comprises: Openflow controller obtains the available network link parameter after renewal, and the available network link parameter after renewal at least comprises IP address, the port numbers after the renewal that the Openflow switch of target expansion is corresponding.Openflow controller determines according to the available network link parameter after upgrading the parameter that re-establishes GTP tunnel, the described parameter that re-establishes described GTP tunnel comprises the IP address, two ends that described GTP tunnel is corresponding, two ends port numbers, GTP-U Version, GTP-U TEID, then by the available network link parameter after upgrading and the parameter that re-establishes GTP tunnel, generate first and upgrade GTP route flow table clause and down hop encapsulation parameter renewal record entry, first upgrades the stream table clause using when GTP route flow table clause is the Openflow switch transmission data of expanding, down hop encapsulation parameter upgrades record entry and comprises the Hash ID after renewal, source IP address after renewal, object IP address after renewal, source port number after renewal, GTP-U TEID after the renewal that destination slogan after renewal and down hop tunnel are used.

Optionally, the relevant parameter of GTP tunnel also comprises the second renewal GTP route flow table clause, and second upgrades the stream table clause using when GTP route flow table clause is standard Openflow switch transmission data.At Openflow controller, obtain after available network link parameter after renewal and generation re-establish the parameter of GTP tunnel, the parameter that Openflow controller re-establishes GTP tunnel by available network link parameter and generation generates second and upgrades GTP route flow table clause.

It should be noted that, the field of upgrading record entry and the second renewal GTP route flow table clause about the first renewal GTP route flow table clause, down hop encapsulation parameter can be with reference to figure 5, Fig. 6 and Fig. 7, and this is no longer going to repeat them.

Optionally, Openflow controller receives PCRF and sends to the policy information after renewal.Openflow controller generates the first update strategy GTP route flow table clause, down hop encapsulation parameter strategy record entry and the second update strategy GTP route flow table clause according to available network link parameter and policy information.

803, Openflow controller sends to the relevant parameter that upgrades GTP tunnel the Openflow switch of target expansion, so that the Openflow switch of target expansion upgrades record entry transmission data according to the first renewal GTP route flow table clause and down hop encapsulation parameter.

804, Openflow controller sends to standard Openflow switch by the second renewal GTP route flow table clause, so that standard Openflow switch is according to the second renewal GTP route flow table clause transmission data.

As shown in Figure 9, in another embodiment of the present invention, the present invention also provides a kind of processing method of GTP tunnel, and the method is as follows:

901, Openflow controller obtains deleting GTP tunnel request, and wherein, deleting GTP tunnel request comprises the sign of indicating deleting GTP tunnel.

Do not limit in this step the concrete form of the sign of this indication deleting GTP tunnel.

Wherein, the mode that Openflow controller obtains deleting GTP tunnel request with obtain that to set up the mode of GTP tunnel request identical, do not repeat them here.

902, Openflow controller is deleted corresponding GTP tunnel by this deleting GTP tunnel request, and Openflow switch and the target criteria Openflow switch of notification target expansion, so that Openflow switch and the target criteria Openflow switch of target expansion are deleted accordingly about parameter corresponding to GTP tunnel corresponding to deleting GTP tunnel request.

Wherein, the Openflow switch of target expansion is deleted a GTP route flow table clause, down hop encapsulation parameter strategy record entry, and target criteria Openflow switch is deleted the 2nd GTP route flow table clause.

In another embodiment of the present invention, the invention provides a kind of method based on Openflow transmission data, wherein, it should be noted that, this method is based on EPC network.Figure 10 (a) is the GTP tunnel pipe control face Organization Chart separation with data surface in EPC network.Figure 10 (b) is the processing method of GTP tunnel in EPC network, and a kind of form of the method is initiated GTP tunnel foundation, modification, delete procedure by UE, and only with process of establishing explanation, idiographic flow is as follows here:

1001, UE sends and adheres to request to base station.

This adheres to request and comprises service data information, authentication information etc.

1002, base station is adhered to this request and is sent to mobile management entity (Mobility Management Entity, MME).

1003, MME adheres to the content in request by this, generates and sets up GTP tunnel request, and this is set up to GTP tunnel request and sends to S-GW.

1004, S-GW sets up this GTP tunnel request and sends to Openflow controller.

Wherein, in this step, with reference to the S-GW(GTP endpoint of a tunnel in Figure 10 (a)) that chain of command is not Fen Li with data surface, S-GW is identical with function of the prior art here, has the function of control and forwarding capability simultaneously.

1005, Openflow controller is selected the Openflow switch for the target expansion of GTP tunnel.

The target of Openflow controller choice for use is expanded the outlet destination node of Openflow switch as GTP tunnel, according to the GTP parameter of negotiation being comprised to source IP address and object IP address, and source and destination port numbers, TEID sends to S-GW.

The GTP parameter that 1006, S-GW and base station are used is transmitted by MME, so that S-GW and base station negotiate are set up the GTP tunnel between S-GW and base station.

Wherein, in this step, with reference to the S-GW(GTP endpoint of a tunnel in Figure 10 (a)) that chain of command is not Fen Li with data surface, S-GW is identical with function of the prior art here.During as another embodiment of the present invention, can the chain of command of S-GW is Fen Li with data surface, S-GW-data(only possesses the data surface of S-GW here) as the Openflow switch of target expansion.

Because the chain of command of S-GW is here not yet separation with forwarding face, therefore the GTP tunnel between S-GW and base station is set up by themselves negotiation.If by the chain of command of S-GW with forward bright separation, and by the combination of control surfaces of S-GW to Openflow controller, therefore by the GTP tunnel between Openflow controller and base station negotiate S-GW and base station.

It should be noted that, in this enforcement, can first perform step 1005, then perform step 1006; Or also can simultaneously perform step 1005, and step 1006.For convenience, in Figure 10 (b), first to perform step 1005, then perform step 1006 and describe for example.

1007, Openflow controller is set up the GTP tunnel between the Openflow switch of S-GW and target expansion, and issues a GTP route flow table clause, the down hop encapsulation parameter record entry Openflow switch to the target expansion of the outlet destination node of GTP tunnel.

Be understandable that, because the chain of command of S-GW in this step is not yet separation with forwarding face, therefore need Openflow controller and S-GW to consult the GTP tunnel between S-GW and the Openflow switch of target expansion.

1008, Openflow controller generates the 2nd GTP route flow table clause, and is handed down to standard Openflow switch.

1009, Openflow controller obtains result of decision information, generates specific GTP route flow table clause.

1010, Openflow controller is selected the target criteria Openflow switch for GTP tunnel, and this specific GTP route flow table clause is sent to target criteria Openflow switch.

The processing method of a kind of GTP tunnel shown in Figure 10 (c), the method is to initiate GTP tunnel foundation, modification, delete procedure by PCRF, only with process of establishing explanation, idiographic flow is as follows here:

1001 ', PCRF triggers Openflow controller and generates the GTP tunnel request of setting up.

1002 ', Openflow controller is selected the Openflow switch for the target expansion of GTP tunnel.

Concrete, Openflow controller is selected the Openflow switch of the target expansion of GTP tunnel, meanwhile, the source and destination IP address that GTP tunnel is used, source and destination port numbers, Tunnel Identifier TEID sends to S-GW.

The GTP parameter that 1003 ', S-GW and base station are used is transmitted by MME, so that S-GW and base station negotiate are set up the GTP tunnel between S-GW and base station.

1004 ', Openflow controller is set up the GTP tunnel between the Openflow switch of S-GW and target expansion, and issues a GTP route flow table clause, the down hop encapsulation parameter record entry Openflow switch to target expansion.

1005 ', Openflow controller generates the 2nd GTP route flow table clause, and is handed down to standard Openflow switch.

1006 ', Openflow controller obtains result of decision information, generates specific GTP route flow table clause.

1007 ', Openflow controller is selected the target criteria Openflow switch for GTP tunnel, and this specific GTP route flow table clause is sent to target criteria Openflow switch.

The method of describing based on above-mentioned Figure 10 (b) and Figure 10 (c), as shown in figure 11, the present invention also provides the processing method of another kind of GTP tunnel, and the method is specific as follows:

1101, after the GTP tunnel establishing between S-GW and base station, base station sends to S-GW by user data requests information.

1102, S-GW crosses target criteria Openflow switch by user data requests information exchange, and the Openflow switch of target expansion is routed in application server corresponding to this business.

1103, application server sends business datum A according to user data requests information to the Openflow switch of target expansion.

1104, the Openflow switch of target expansion is processed this business datum A by a GTP route flow table clause and down hop encapsulation parameter record entry, obtain business datum B, then business datum B is transmitted to the second target criteria Openflow switch.

Concrete, the Openflow switch of target expansion adopts GTP agreement to carry out decapsulation to business datum A, obtain the header packet information of business datum A ' and this business datum A, by header packet information, obtain a GTP route flow table clause and the down hop encapsulation parameter record entry that this business datum A is corresponding, by down hop encapsulation parameter record entry, to business datum A ', adopt GTP agreement to encapsulate, obtain business datum B, then by the operation information of a GTP route flow table clause, transmit this business datum B.

1105, the second target criteria Openflow switches send to network middleware by business datum B.

This step is optional step, when business datum A is video data or need to insert one section of advertisement or flow warning etc. before user watches this business datum A time, the 2nd GTP route flow table clause that the second target criteria Openflow switch issues according to Openflow controller, sends to network middleware by business datum A.

Be understandable that, the second target criteria Openflow switch matches according to the header packet information of this business datum B a 2nd GTP route flow table clause and the specific GTP route flow table clause that coupling dynamics is identical, and the second target criteria Openflow switch adopts the higher specific GTP route flow table clause of stream list item priority to carry out service data transmission B.

1106, network middleware carries out particular procedure to business datum B, and business datum B after particular procedure is sent to first object standard Openflow switch.

1107, first object standard Openflow switch receives the business datum B after particular procedure, and business datum B is carried out to decapsulation, obtains business datum A.

1108, first object standard Openflow switch sends to S-GW by this business datum A.

1109, S-GW carries out GTP protocol encapsulation by business datum A, obtains business datum B ', and this business datum B ' is sent to base station.

1110, decapsulation is carried out to this business datum B ' in base station, obtains business datum A, then business datum A is sent to UE.

The present invention is Fen Li with forwarding face by the chain of command of GTP tunnel end points, obtain the Openflow switch of Openflow controller and expansion, adopt the Openflow controller in the present invention can set up the GTP tunnel between each GTP tunnel end points, by the GTP tunnel that adopts Openflow controller to set up, also after being convenient to, Openflow controller completes modification or the deletion of the GTP tunnel to setting up before, thereby realized, has reduced the complexity of processing GTP tunnel; And can to business datum, plan in advance by Openflow controller, make GTP packet add some customizing messages in the process of transmission, thereby can increase the additional information of business datum and improve the adjustment capability in business data transmission path.

It should be noted that, as another embodiment of the present invention, can comprise the processing method of a kind of GTP tunnel of Figure 10 (b)/Figure 10 (c) and Figure 11.The method can reference diagram (b)/Figure 10 (c) and Figure 11 in description, this is no longer going to repeat them.

In another embodiment of the present invention, the invention provides a kind of method based on Openflow transmission data, wherein, it should be noted that, this method is based on 2G/3G network.Figure 12 (a) is the GTP tunnel pipe control face Organization Chart separation with data surface in 2G/3G network.Figure 12 (b) is the processing method of GTP tunnel in 2G/3G network, and a kind of form of the method is initiated GTP tunnel foundation, modification, delete procedure by UE, and only with process of establishing explanation, idiographic flow is as follows here:

1201, UE is to radio network controller (Radio Network Controller, RNC) send block data protocol context (Packet Data Protocol context, PDP context) activation request, RNC sends to Openflow controller by this PDP context activation request.

1202, Openflow controller is to set up the Openflow switch that GTP tunnel selects corresponding target to expand by this PDP context activation request.

Known as shown in Figure 12 (a), the Openflow switch of the target expansion in this step comprises SGSN-data and GGSN-data.

SGSN-data and GGSN-data can be the Openflow switches of supporting the target expansion of GTP-U.

1203, Openflow controller obtains available network link parameter, determines the parameter of setting up GTP tunnel, then sets up GTP tunnel.

Concrete, Openflow controller is according to available GTP tunnel source IP address and the object IP address of SGSN and the maintenance of GGSN chain of command, and source port number and destination slogan and TEID consult to set up the GTP tunnel between SGSN-data and GGSN-data.

Available source IP address and object IP address that Openflow controller is safeguarded according to SGSN chain of command, source port number and destination slogan and TEID and RNC consult to set up the GTP tunnel between RNC and SGSN.

1204, Openflow controller issues corresponding a GTP route flow table clause, down hop encapsulation parameter record entry to the Openflow switch of target expansion.

Concrete, Openflow controller issues each self-corresponding GTP route flow table clause, down hop encapsulation parameter record entry to SGSN-data and GGSN-data respectively.

1205, Openflow controller generates the 2nd GTP route flow table clause, and is handed down to standard Openflow switch.

1206, Openflow controller obtains result of decision information, generates specific GTP route flow table clause.

1207, Openflow controller is selected the target criteria Openflow switch for GTP tunnel, and this specific GTP route flow table clause is sent to target criteria Openflow switch.

The method of describing based on above-mentioned Figure 12 (b), as shown in figure 13, the present invention also provides the processing method of another kind of GTP tunnel, and the method is specific as follows:

1301, after Openflow controller establishes GTP tunnel, RNC sends to user data requests information the Openflow switch of first object expansion.

Be understandable that, the Openflow switch of the first object expansion in this step can be SGSN-data.

1302, the Openflow switch of first object expansion is crossed first object standard Openflow switch by user data requests information exchange, and the Openflow switch of the second target criteria Openflow switch and the expansion of the second target is routed in application server corresponding to this business.

1303, application server sends business datum A according to user data requests information to the Openflow switch of the second target expansion.

Be understandable that, the Openflow switch of the second target expansion in this step can be GGSN-data.

1304, the Openflow switch of the second target expansion carries out GTP protocol encapsulation according to a GTP route flow table clause and down hop encapsulation parameter record entry by business datum A, obtain business datum B, then business datum B is transmitted to the second target criteria Openflow switch.

Wherein business datum B adopts GTP-U protocol encapsulation business datum A afterwards.

1305, the second target criteria Openflow switches send to network middleware by business datum B.

1306, network middleware carries out particular procedure to business datum B, and business datum B after particular procedure is sent to first object standard Openflow switch.

1307, first object standard Openflow switch receives the business datum B after particular procedure, and business datum B is carried out to decapsulation, obtains business datum A.

1308, first object standard Openflow switch sends to the Openflow switch of first object expansion to business datum A.

1309, the Openflow switch of first object expansion carries out GTP protocol encapsulation by business datum A, obtains business datum B ', and this business datum B ' is sent to RNC.

1310, RNC carries out decapsulation to this business datum B ', obtains business datum A, then business datum A is sent to UE.

It should be noted that, as another embodiment of the present invention, can comprise the processing method of a kind of GTP tunnel of Figure 12 (b) and Figure 13.The method can be with reference to figure 12(b) with Figure 13 in description, this is no longer going to repeat them.

As shown in figure 14, the embodiment of the present invention provides a kind for the treatment of system 14 of GTP tunnel, this system 14 comprises: Openflow controller 1401, wherein Openflow controller 1401 is for possessing the equipment of the chain of command function in GTP tunnel end points for the Openflow switch 1402 of target expansion, and the Openflow switch 1402 of target expansion is as the equipment that possesses the data surface function in GTP tunnel end points in GTP tunnel.

Openflow controller 1401, for obtaining the GTP tunnel request of setting up, by setting up GTP tunnel request, set up GTP tunnel, wherein set up GTP tunnel request and comprise the relevant parameter that generates GTP tunnel, the relevant parameter of GTP tunnel comprises a GTP route flow table clause and down hop encapsulation parameter record entry, the one GTP route flow table clause is the stream table clause that the Openflow switch 1402 of target expansion is used while transmitting data, the one GTP route flow table clause at least comprises the general packet radio service technology tunnel protocol data surface GTP-U Version of version number, general packet radio service technology tunnel protocol data surface Tunnel End Point Identifier GTP-U TEID, the stream table clause using when down hop encapsulation parameter record entry is Openflow switch 1402 encapsulation of data of target expansion, the relevant parameter of GTP tunnel is sent to the Openflow switch 1402 of target expansion,

The Openflow switch 1402 of target expansion, sends to a GTP route flow table clause and/or down hop encapsulation parameter record entry for receiving Openflow controller 1401; And according to a GTP route flow table clause and down hop encapsulation parameter record entry transmission data.

Further, Openflow controller, specifically for selecting the Openflow switch 1402 for the target expansion of GTP tunnel; Obtain available network link parameter, available network link parameter at least comprises IP address, the port numbers of Openflow switch 1402 correspondences of target expansion; By available network link parameter, determine the parameter of setting up GTP tunnel, the parameter of setting up GTP tunnel comprises source IP address, object IP address, source port number, destination slogan, GTP-U Version, the GTP-U TEID that GTP tunnel is corresponding; By available network link parameter and the parameter of setting up GTP tunnel, generate a GTP route flow table clause and down hop encapsulation parameter record entry.

Wherein, the relevant parameter of GTP tunnel also comprises the 2nd GTP route flow table clause, the stream table clause that the 2nd GTP route flow table clause is used while being standard Openflow switch transmission data, standard Openflow switch is all standard Openflow switches of Openflow controller management.

Openflow controller 1401, also generates the 2nd GTP route flow table clause for the parameter by setting up GTP tunnel; The 2nd GTP route flow table clause is sent to standard Openflow switch;

Further, described system 14 also comprises target criteria Openflow switch 1403.Wherein target criteria Openflow switch is the standard Openflow switch that participates in the data in transmission GTP tunnel.

Openflow controller 1401, also for obtaining result of decision information, result of decision information is used to indicate carries out particular procedure to data corresponding to specific transactions, and particular procedure is following any one form: for data corresponding to specific transactions are carried out transcoding, are that data corresponding to specific transactions are carried out flow isolation, sent warning reminder message or carry out advertisement video for data corresponding to specific transactions and intercut to user equipment (UE); According to result of decision information, be that the data that specific transactions is corresponding generate specific GTP route flow table clause; And selection is for the target criteria Openflow switch 1403 of GTP tunnel; Specific GTP route flow table clause is sent to target criteria Openflow switch 1403;

Target criteria Openflow switch 1403, the specific GTP route flow table clause sending for receiving OPenflow controller 1401.

Further, Openflow controller, the policy information also sending for receiving strategy and charging rule functions unit PCRF; By available network link parameter and policy information, generate the first tactful GTP route flow table clause, down hop encapsulation parameter strategy record entry and the second tactful GTP route flow table clause, and the Openflow switch 1402 that sends to target to expand the first tactful GTP route flow table clause, down hop encapsulation parameter strategy record entry, the second tactful GTP route flow table clause is sent to standard Openflow switch;

The Openflow switch 1402 of target expansion, the first tactful GTP route flow table clause, the down hop encapsulation parameter strategy record entry that also for receiving Openflow controller 1401, send;

Target criteria Openflow switch 1403, the second tactful GTP route flow table clause also sending for receiving Openflow controller 1401;

Further, Openflow controller 1401, also for obtaining the GTP tunnel request of revising, by revising GTP tunnel request, revise GTP tunnel, wherein revise GTP tunnel request and comprise the relevant parameter that generates renewal GTP tunnel, the relevant parameter that upgrades GTP tunnel comprises the first renewal GTP route flow table clause, down hop encapsulation parameter upgrades record entry and second and upgrades GTP route flow table clause, first to upgrade GTP route flow table clause be the stream table clause that the Openflow switch 1402 of target expansion is used while transmitting data, down hop encapsulation parameter upgrades the stream table clause using when record entry is Openflow switch 1402 encapsulation of data of target expansion, second upgrades the stream table clause using when GTP route flow table clause is standard Openflow switch transmission data, the relevant parameter that upgrades GTP tunnel is sent to Openflow switch 1402 and the standard Openflow switch of target expansion, obtain deleting GTP tunnel request, by deleting GTP tunnel request, delete corresponding GTP tunnel, Openflow switch 1402 and/or the target criteria Openflow switch 1403 of notification target expansion, so that Openflow switch 1402 and the target criteria Openflow switch 1403 of target expansion are deleted accordingly about parameter corresponding to GTP tunnel corresponding to deleting GTP tunnel request.

The Openflow switch 1402 of target expansion, also for receiving the relevant parameter of the renewal GTP tunnel that Openflow controller 1401 sends; And according to the relevant parameter transmission data of upgrading GTP tunnel; The notice of the first deleting GTP tunnel that reception Openflow controller 1401 sends, wherein, the notice of the first deleting GTP tunnel comprises the sign of deleting GTP tunnel, and the notice of the first deleting GTP tunnel is the signaling of Openflow switch 1402 deleting GTP tunnels of indicating target expansion; And the notice of passing through the first deleting GTP tunnel is deleted the GTP tunnel of the sign correspondence of deleting GTP tunnel.

Target criteria Openflow switch 1402, also for receiving the relevant parameter of the renewal GTP tunnel that Openflow controller 1401 sends; And according to the relevant parameter transmission data of upgrading GTP tunnel; The notice of the second deleting GTP tunnel that reception Openflow controller 1401 sends, wherein, the notice of the second deleting GTP tunnel comprises the sign of deleting GTP tunnel, and the notice of the second deleting GTP tunnel is the signaling of indicating target standard Openflow switch 1403 deleting GTP tunnels; And the notice of passing through the second deleting GTP tunnel is deleted the GTP tunnel of the sign correspondence of deleting GTP tunnel.

The present invention is Fen Li with forwarding face by the chain of command of GTP tunnel end points, obtain the Openflow switch of Openflow controller and expansion, adopt the Openflow controller in the present invention can set up the GTP tunnel between each GTP tunnel end points, by the GTP tunnel that adopts Openflow controller to set up, also after being convenient to, Openflow controller completes modification or the deletion of the GTP tunnel to setting up before, thereby realized, reduces the complexity of processing GTP tunnel; And business datum is planned in advance, make GTP packet add some customizing messages in the process of transmission, thereby can increase the additional information of business datum and improve the adjustment capability in business data transmission path.

Those skilled in the art can be well understood to, for convenience and simplicity of description, only with the division of above-mentioned each functional module, be illustrated, in practical application, can above-mentioned functions be distributed and by different functional modules, completed as required, the internal structure that is about to device is divided into different functional modules, to complete all or part of function described above.The system of foregoing description, the specific works process of device and unit, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.

In the several embodiment that provide in the application, should be understood that, disclosed system, apparatus and method, can realize by another way.For example, device embodiment described above is only schematic, for example, the division of described module or unit, be only that a kind of logic function is divided, during actual realization, can have other dividing mode, for example multiple unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.

The described unit as separating component explanation can or can not be also physically to separate, and the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in multiple network element.Can select according to the actual needs some or all of unit wherein to realize the object of the present embodiment scheme.

In addition, the each functional unit in each embodiment of the present invention can be integrated in a processing unit, can be also that the independent physics of unit exists, and also can be integrated in a unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, and also can adopt the form of SFU software functional unit to realize.

If described integrated unit is realized and during as production marketing independently or use, can be stored in a computer read/write memory medium using the form of SFU software functional unit.Based on such understanding, the all or part of of the part that technical scheme of the present invention contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions (can be personal computers in order to make a computer equipment, server, or the network equipment etc.) or processor (processor) carry out all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CDs.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.

Claims

1. a processing method for GTP tunnel, is characterized in that, comprising:

2. the processing method of GTP tunnel according to claim 1, is characterized in that, described Openflow controller is set up GTP tunnel request and set up GTP tunnel by described, comprising:

3. the processing method of GTP tunnel according to claim 2, it is characterized in that, the relevant parameter of described GTP tunnel also comprises the 2nd GTP route flow table clause, the stream table clause that described the 2nd GTP route flow table clause is used while being standard Openflow switch transmission data, described standard Openflow switch is all standard Openflow switches of described Openflow controller management;

4. according to the processing method of the GTP tunnel described in claim 2 or 3, it is characterized in that, at described Openflow controller, by described, set up after GTP tunnel request sets up GTP tunnel, described method also comprises:

5. the processing method of GTP tunnel according to claim 4, is characterized in that, described method also comprises:

6. the processing method of GTP tunnel according to claim 1, is characterized in that, described method also comprises:

7. the treatment system of a GTP tunnel, it is characterized in that, described system comprises the Openflow switch of Openflow controller, target expansion, wherein said Openflow controller is the equipment that possesses the chain of command function in GTP tunnel end points, the Openflow switch of described target expansion is as the equipment that possesses the data surface function in described GTP tunnel end points in described GTP tunnel, comprising:

8. the treatment system of GTP tunnel according to claim 7, is characterized in that,

Described Openflow controller, also for selecting the Openflow switch for the described target expansion of described GTP tunnel; Obtain available network link parameter, described available network link parameter at least comprises corresponding IP address, the port numbers of Openflow switch of described target expansion; By described available network link parameter, determine the parameter of setting up described GTP tunnel, the described parameter of setting up described GTP tunnel comprises source IP address, object IP address, source port number, destination slogan, GTP-U Version, the GTP-U TEID that described GTP tunnel is corresponding; By described available network link parameter and the described parameter of setting up described GTP tunnel, generate a GTP route flow table clause and down hop encapsulation parameter record entry.

9. the treatment system of GTP tunnel according to claim 8, it is characterized in that, the relevant parameter of described GTP tunnel also comprises the 2nd GTP route flow table clause, the stream table clause that described the 2nd GTP route flow table clause is used while being standard Openflow switch transmission data, described standard Openflow switch is all standard Openflow switches of described Openflow controller management;

10. according to the treatment system of the GTP tunnel described in claim 7 or 9, it is characterized in that,

Described Openflow controller, the policy information also sending for receiving strategy and charging rule functions unit PCRF; By described available network link parameter and described policy information, generate the first tactful GTP route flow table clause, down hop encapsulation parameter strategy record entry and the second tactful GTP route flow table clause, and the Openflow switch that sends to described target to expand described the first tactful GTP route flow table clause, described down hop encapsulation parameter strategy record entry, described the second tactful GTP route flow table clause is sent to described standard Openflow switch;