CN101420718A - Network communication proxy system and method for implementing communication proxy service - Google Patents
Network communication proxy system and method for implementing communication proxy service Download PDFInfo
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- CN101420718A CN101420718A CNA2008100272161A CN200810027216A CN101420718A CN 101420718 A CN101420718 A CN 101420718A CN A2008100272161 A CNA2008100272161 A CN A2008100272161A CN 200810027216 A CN200810027216 A CN 200810027216A CN 101420718 A CN101420718 A CN 101420718A
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- 230000011664 signaling Effects 0.000 claims description 52
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- 239000003795 chemical substances by application Substances 0.000 claims description 12
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- 230000005540 biological transmission Effects 0.000 claims description 4
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Abstract
The invention relates to a network communication agent system applied to a GPRS or 3G backbone network GGSN and SSGN equipment thereof, which comprises an SGSN module, a GGSN module, an APN module, a GTP module and a PGSN module, wherein, the network communication agent system guides and completes the network communication agents between the backbone network GGSN and SSGN equipment according to an APN key domain in a GTP protocol. The invention also provides a network communication agent method. The invention can optimize the data exchanging between SGSN and GGSN, and can be applied to a plurality of service fields such as a service guiding the user to arrange the GPRS online parameter, a data network monitoring service, a data network dialing and testing service, a simulation service of GGSN equipment, and the like.
Description
Technical field
The present invention relates to the agency service of GPRS/EDGE or 3G data service core network, relate in particular to a kind of Common Communication Proxy system and its realization communication agent service method.
Background technology
General packet radio service (General Packet Radio Service, GPRS) be to be applied to gigabyte network system (Gigabyte System Network, GSN) GSN mobile phone user visit public data network (Public Data Network, PDN) a kind of network service architecture, it is by GPRS service support node (Serving GPRS Support Node, SGSN) and the GPRS gateway support that (GatewayGPRS Support Node, GGSN) service equipment is realized the data exchanging function between fixed network and the wireless network to node.
Wherein SGSN is a service support node, and tracking, system safety and the access control of mobile terminal device mainly are provided.GGSN is a gateway support node, and a border routing function between external network and the GPRS network is provided.SGSN stresses wireless access, and GGSN stresses outer net is being connected.
SGSN and GGSN are the backbone networks of GPRS, command transmitting and transfer of data all are based on the IP agreement between SGSN and the GGSN now, and the interface of fixed qty is all arranged between the two, so crowded situation about stopping up can appear when transmitting a large amount of signalings, data simultaneously.And the present invention is access point (the Access Point Name that utilizes in the GTP agreement, APN) key, tunnel transmission agreement (GPRS Tunneling Protocol between SGSN and the GGSN after finishing, GTP) agent functionality of the network service of signaling aspect and GTP data plane data, thereby be that data, the Signalling exchange between SGSN and the GGSN is more convenient, more efficient in the GPRS backbone network.
Summary of the invention
Embodiment of the invention technical problem to be solved is, overcomes the deficiency that above-mentioned prior art exists, and a kind of more convenient, more efficient Common Communication Proxy system is provided.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of Common Communication Proxy system, comprising:
Be used to control the SGSN module that portable terminal inserts GPRS network;
Be used to control the GGSN module that external network inserts GPRS network;
Be used to provide the PGSN module of Common Communication Proxy function between SGSN and the GGSN;
Be used for providing the APN module of routing iinformation to SGSN and GGSN;
Be used for defining the GTP module of GPRS network signaling, data interaction agreement;
Described SGSN module, GTP module, APN module and GGSN module are connected with the PGSN module respectively.
Correspondingly, embodiments of the invention have also proposed a kind of network communication agent method, may further comprise the steps
The PGSN module waits for that the GTP module sends the signaling request;
After described PGSN module is subjected to the signaling request, judge agency service pattern and signaling type;
According to different agency service pattern and signaling types, construct new address information, set up corresponding tunnel, and obtain destination address by the APN module, lastest imformation is kept in the buffer unit;
The PGSN module is according to the lastest imformation content of preserving in the buffer unit, finishes the agent functionality that GTP signaling and GTP user data intercom mutually between SGSN module and the GGSN module.
The present invention has following useful effect: quote the GTP agreement, utilize the APN key in the GTP agreement, set up new tunnel and be temporarily stored in the buffer unit destination address new with searching, between SGSN and GGSN that the data of GTP signaling aspect and GTP data plane are mutual fast, realize the Common Communication Proxy function.And the present invention is applied in the guiding user and GPRS is set goes up network parameters service, data network monitoring service, the testing service of data network and a plurality of business fields such as service of simulation of GGSN equipment.
Description of drawings
Fig. 1: be representative network structural representation of the present invention;
Fig. 2: be Common Communication Proxy system configuration schematic diagram of the present invention;
Fig. 3: be redirect mode forwarding process schematic diagram of the present invention;
Fig. 4: be transfer proxy mode of the present invention tunnel activation process schematic diagram;
Fig. 5: be that transfer proxy mode of the present invention tunnel upgrades schematic flow sheet;
Fig. 6: be that schematic flow sheet is removed in transfer proxy mode of the present invention tunnel;
Fig. 7: be transfer proxy mode user data forwarding process schematic diagram of the present invention;
Fig. 8: be the network monitoring schematic diagram of realizing under the listen mode of the present invention.
Embodiment
Describe the present invention below in conjunction with accompanying drawing.
Please refer to shown in Figure 1ly, be representative network structure of the present invention, SGSN and GGSN are the backbone networks of GPRS, and SGSN stresses wireless access, and GGSN stresses to utilize the PGSN module to finish the agent functionality of signaling, data interaction between SGSN and the GGSN in that outer net is connected.
Please refer to shown in Figure 2, for Common Communication Proxy of the present invention system comprises:
Be used to control the SGSN module that portable terminal inserts GPRS network;
Be used to control the GGSN module that external network inserts GPRS network;
Be used to provide the PGSN module of Common Communication Proxy function between SGSN and the GGSN;
Be used for providing the APN module of routing iinformation to SGSN and GGSN;
Be used for defining the GTP module of GPRS network signaling, data interaction agreement;
Described SGSN module, GTP module, APN module and GGSN module are connected with the PGSN module respectively.
The present invention also provides a kind of network communication agent method, and this method comprises:
The PGSN module waits for that the GTP module sends the signaling request;
After described PGSN module is subjected to the signaling request, judge agency service pattern and signaling type;
According to different agency service pattern and signaling types, construct new address information, set up corresponding tunnel, and obtain destination address by the APN module, lastest imformation is kept in the buffer unit;
The PGSN module is according to the lastest imformation content of preserving in the buffer unit, finishes the agent functionality that GTP signaling and GTP user data intercom mutually between SGSN module and the GGSN module.
With reference to Fig. 3, when being redirect mode as if the agency service pattern, idiographic flow is as follows:
If GTP tunnel activates demand signalling CR, then search the APN route and determine target GGSN address, according to signaling CR and GTP agreement structure message UCR, again according to UCR structure IP message P, soon the source address of IP stem and destination address replace with GSN address and the destination address among the CP, at last message P is sent to target GGSN, return at last and wait for that GTP waits for.
If not, then refuse message, return and wait for that GTP waits for.
With reference to Fig. 4, if the agency service pattern is the tunnel of transfer directional pattern when activating, idiographic flow is as follows:
If GTP tunnel activates demand signalling CR, set up transfer tunnel T according to SGSN side tunnel information, and establishment PDP tunnel activates signaling CR ', change the GSN address into this machine address, obtain address object GGSN by the APN routing table, CR ' is issued new GGSN, and transfer tunnel T is saved in buffer unit, returns at last and waits for that GTP waits for;
If GTP tunnel activates response signaling CP, extract the CP Tunnel Identifier, inquiry transfer tunnel buffer memory:
If there is transfer object T, then judge whether to respond successfully;
If respond successfully, then improve the tunnel information of T and GGSN side, tunnel T sets up successfully;
If response is unsuccessful, then T is removed from the transfer tunnel;
GU is transmitted to the GGSN of GGSN side among the T, and T is saved in the transfer tunnel table, return and wait for that GTP waits for;
If there is not transfer object T, then abandon this message, do not process, return steps A.
If neither signaling CR neither signaling CP, then forward GTP tunnel to and upgrade and remove signaling process.
With reference to Fig. 5, if the agency service pattern is the tunnel of transfer directional pattern when upgrading, idiographic flow is as follows:
If GTP tunnel update request signaling UR extracts UR sign and inquiry transfer tunnel:
If there is object T, then set up and upgrade tunnel object UT, revise UR source address and destination address and obtain UR ' and it is transmitted to the GGSN of GGSN side, UT is saved in upgrades the tunnel buffer memory, return and wait for that GTP waits for.
If there is not object T, then refusal response PDP tunnel update request is returned and is waited for that GTP waits for.
If GTP tunnel upgrades response signaling CP, extract the CP Tunnel Identifier, inquiry transfer tunnel buffer memory:
If there is transfer object UT, then judge whether to respond successfully;
If respond successfully, then improve the tunnel information of UT and GGSN side, tunnel UT sets up successfully, replaces T with UT;
If response is unsuccessful, then UT is removed from the transfer tunnel;
CP is transmitted to the SSGN of SSGN side among the T, returns and wait for that GTP waits for.
If there is not transfer object UT, then abandon this message, do not process, return and wait for that GTP waits for.
If neither signaling UR neither signaling UP, then forward GTP tunnel to and activate and remove signaling process.
With reference to Fig. 6, if the agency service pattern is the tunnel of transfer directional pattern when removing, idiographic flow is as follows:
If GTP tunnel is removed demand signalling DR, extract DR sign and inquiry transfer tunnel:
If there is object T, then judge the GSN device type of the request of transmission;
If SGSN is transmitted to DR the GGSN of tunnel GGSN side;
If GGSN, just DR is transmitted to the SGSN of tunnel SGSN side;
And preserve DR and remove buffer memory DT to the tunnel, return and wait for that GTP waits for.
If there is not object T, then request is removed in refusal response PDP tunnel, returns and waits for that GTP waits for.
If GTP tunnel upgrades response signaling CP, extract the CP Tunnel Identifier, inquiry transfer tunnel buffer memory:
Remove object DT if exist, then judge whether to respond successfully:
If respond successfully, then the state of the transfer tunnel T of DT correspondence is made as and removes;
If response is unsuccessful, then be left intact;
Judge the GSN device type of response:
If SGSN is transmitted to DP the GGSN of tunnel GGSN side;
If GGSN, just DP is transmitted to the SGSN of tunnel SGSN side;
DP is removed from tunnel dismounting buffer memory, T is removed from transfer tunnel table, return and wait for that GTP waits for.
If do not exist the tunnel to remove object DT, then abandon this message, do not process, return and wait for that GTP waits for.
If neither signaling DR neither signaling DP, then forward GTP tunnel to and activate and upgrade signaling process.
With reference to Fig. 7, when being the user data forwarding of transfer directional pattern as if the agency service pattern, idiographic flow is as follows:
Elder generation's monitoring users data are accepted GTP-U signaling GU, and according to GSN address and the Tunnel Identifier of GU, search the transfer tunnel:
If there is transfer tunnel T, then judge the GSN device type:
If SGSN is transmitted to GU the GGSN of tunnel GGSN side;
If GGSN, just GU is transmitted to the SGSN of tunnel SGSN side;
Return the monitoring users datum plane.
If there is not transfer tunnel T, then abandon this message, return the monitoring users data.
With reference to Fig. 8, be the network monitoring of realizing under the listen mode, comprise three main modular of GGSN, PGSN and SGSN, PGSN finishes agent functionality, and wherein the trace log module is used for the data message of all circulations in the signaling event that takes place in the GTP tunnel that the record object user set up and this tunnel during using gprs service.
Claims (8)
1, a kind of Common Communication Proxy system is characterized in that this system comprises:
Be used to control the SGSN module that portable terminal inserts GPRS network;
Be used to control the GGSN module that external network inserts GPRS network;
Be used to provide the PGSN module of Common Communication Proxy function between SGSN and the GGSN;
Be used for providing the APN module of routing iinformation to SGSN and GGSN;
Be used for defining the GTP module of GPRS network signaling, data interaction agreement;
Described SGSN module, GTP module, APN module and GGSN module are connected with the PGSN module respectively.
2, Common Communication Proxy according to claim 1 system is characterized in that described GTP module comprises:
The GTP signaling unit is used for the transmission of tunnel management and other signaling message thereof;
The GTP user data cell is used for the transmission user face.
3, Common Communication Proxy according to claim 1 system is characterized in that described APN module mainly is meant the APN key in the GTP agreement.
4, Common Communication Proxy according to claim 1 system is characterized in that, described PGSN module comprises that also the tunnel activates buffer unit, and buffer unit is removed in tunnel transfer buffer unit and tunnel.
5, Common Communication Proxy according to claim 2 system, it is characterized in that described GTP signaling unit comprises: GTP tunnel activates the demand signalling unit, GTR activates response signaling unit, GTP tunnel update request signaling unit, GTP tunnel renewal response signaling unit, GTP tunnel dismounting demand signalling unit, GTP tunnel dismounting response signaling unit.
6, a kind of method of utilizing the Common Communication Proxy system to finish agent functionality is characterized in that, this method comprises:
The PGSN module waits for that the GTP module sends the signaling request;
After described PGSN module is subjected to the signaling request, judge agency service pattern and signaling type;
According to different agency service pattern and signaling types, construct new address information, set up corresponding tunnel, and obtain destination address by the APN module, lastest imformation is kept in the buffer unit;
The PGSN module is according to the lastest imformation content of preserving in the buffer unit, finishes the agent functionality that GTP signaling and GTP user data intercom mutually between SGSN module and the GGSN module.
7, method according to claim 6 is characterized in that, described agency service pattern comprises:
Redirect mode is meant when GTP tunnel is set up, and transmits GTP tunnel and activates demand signalling to fresh target GGSN, make SGSN can and fresh target GGSN between set up GTP tunnel;
The transfer proxy mode is meant between SGSN and target GGSN and sets up the transfer agent point;
Listen mode is to increase monitor function on transfer proxy mode basis.
8, method according to claim 7 is characterized in that, described transfer proxy mode mainly comprises: the PDP tunnel activates, the PDP tunnel upgrades, the PDP tunnel is removed and the processing of four aspects of user data plane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100272161A CN101420718B (en) | 2008-04-03 | 2008-04-03 | Network communication proxy system and method for implementing communication proxy service |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101925038B (en) * | 2009-06-12 | 2013-01-02 | 华为技术有限公司 | Data transmission method, communication device and network system |
| CN104869668A (en) * | 2015-02-13 | 2015-08-26 | 北京集奥聚合科技有限公司 | Method for access platform to support GTP signaling |
| CN107968774A (en) * | 2016-10-20 | 2018-04-27 | 深圳联友科技有限公司 | A kind of protecting information safety method of car networking terminal device |
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2008
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101925038B (en) * | 2009-06-12 | 2013-01-02 | 华为技术有限公司 | Data transmission method, communication device and network system |
| CN104869668A (en) * | 2015-02-13 | 2015-08-26 | 北京集奥聚合科技有限公司 | Method for access platform to support GTP signaling |
| CN104869668B (en) * | 2015-02-13 | 2018-05-29 | 北京集奥聚合科技有限公司 | Method for access platform to support GTP signaling |
| CN107968774A (en) * | 2016-10-20 | 2018-04-27 | 深圳联友科技有限公司 | A kind of protecting information safety method of car networking terminal device |
| CN107968774B (en) * | 2016-10-20 | 2020-10-09 | 深圳联友科技有限公司 | Information safety protection method for terminal equipment of Internet of vehicles |
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