CN101436991B - Routing method, apparatus and communication system for outputting data through Gi port - Google Patents
Routing method, apparatus and communication system for outputting data through Gi port Download PDFInfo
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- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
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Abstract
The embodiment of the invention provides a routing method used for data exiting from a Gi port, a corresponding device and a communication system. The method comprises the following steps: establishing a channel for data exiting a Gi port from a core network and a channel for data exiting a Gi port from an access point; receiving data sent by a terminal; and according to a preset routing table and the destination address of the data, and transmitting the data to the next hop network element in one of the two data channels corresponding to the destination address of the data. According to the embodiment of the invention, two data channels are established on an AP side and a network side; and according to a path corresponding to the destination address in the preset routing table, a network side AP selects one of the two established data channels as a data transmission path. The embodiment of the invention solves the problems that the same APN used for identifying different services in the prior art can only establish one channel for data exiting a Gi port, and probably causes wastes in core network resource.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method for routing, device and communication system of outputting data through Gi port.
Background technology
The Gi mouth is the reference point between GPRS (GPRS:General Packet Radio Service) network and packet data network.Be carried on the data of the terminal on Internet protocol (IP:Internet Protocol) network, be divided into two kinds according to the difference of the destination address of outputting data through Gi port: a kind of is access internet Internet business; The 2nd, visit core net (CN:Core Net) business is as visit core net WAP (wireless application protocol) (WAP:Wireless Application Protocol) server.Referring to shown in Figure 1, under the environment of access point (AP:Access Point) networking, data on the terminal are transferred in the local area network (LAN) by AP, from local area network (LAN), be transferred on the IP network again, if the destination address of terminal transmission data is the addresses in the core net, then data send out the Gi mouth by gateway general grouping service wireless support node (GGSN:Gateway GPRS SupportNote), are routed to destination address in the core net.If the destination address of terminal transmission data is the addresses among the Internet Internet, then data send out the Gi mouth by GGSN, are routed to the destination address in the Internet net.Wherein, the function of service general grouping service wireless support node (SGSN:ServiceGPRS SupportNote) that IAD (AG:Access Gateway) is integrated.
Along with the continuous development of technology, to develop into gradually by AP and directly go out the Gi mouth, need separate the Internet Network on AP this moment with the core net business.Still referring to shown in Figure 1, when the data that send when terminal need be carried out the Internet network service, AP directly sent to destination address on the Internet network with data; When carrying out the core net business if desired, then send the operation of the method execution of outputting data through Gi port to data according to GGSN.Wherein, the dynamic host allocation protocol Dynamic Host Configuration Protocol server is used for to AP and terminal distribution address, and finish foundation jointly with AP and go out the data channel of Gi mouth from AP, wherein, communicating by letter between the local area network (LAN) at gateway GW carrying AP place and the outer net.
Use different APN (APN:Access Point Name) differentiated services in the prior art, because APN can be the sign of a class business, so some service needed visit Internet business in a class business, when some need visit the core net business, the data channel that network side is set up goes out the Gi mouth with all business with the APN sign by GGSN only, and can not set up the data channel that directly goes out the Gi mouth from AP; Perhaps the data channel set up of network side is only going out the Gi mouth with all business by AP, and can not set up the data channel that goes out the Gi mouth from GGSN simultaneously.Prior art can only be set up a data channel that the Gi mouth for the same APN of the different business of sign, may cause the waste to core-network resources.
Summary of the invention
The embodiment of the invention provides a kind of method for routing, device and communication system of outputting data through Gi port, has solved the same APN of sign different business in the prior art, can only set up a data channel that the Gi mouth, and may cause the waste to core-network resources.
The embodiment of the invention provides a kind of method for routing of outputting data through Gi port, comprising:
Foundation goes out the data channel of Gi mouth and points out the data channel of Gi mouth from access from core net;
The data that receiving terminal sends;
According to the destination address of preset routing table and described data, with described data send to described two the data passages corresponding with the destination address of described data wherein next in data channel jump network element.
The embodiment of the invention also provides a kind of access point AP, comprising:
Receiving element is used for the data that receiving terminal sends;
Judging unit is used for the destination address according to preset routing table and described data, judges whether next jumping network element of the destination address correspondence of described data is access gateway AG;
Transmitting element one is used for when the next hop address of the destination address correspondence of described data is not AG, with described data by described next jump network element and send to described destination address;
Processing unit, be used for when the next hop address of the destination address correspondence of described data is AG, according to AP is that the IP address and the GGSN of terminal distribution is the mapping relations of the address of terminal distribution, is the address of terminal distribution with the IP address transition of described data for corresponding GGSN;
Transmitting element two is used for when the next hop address of the destination address correspondence of described data is AG, is that the data of the address of terminal distribution send to AG with the IP address transition for corresponding GGSN.
The embodiment of the invention also provides a kind of access gateway AG, comprising:
Receiving element one is used to receive the data channel of self terminal to set up information;
Transmitting element one is used for transmitting data channel to core net and sets up information;
Receiving element two is used to receive that to comprise core net be that the data channel of the address of described terminal distribution is set up response;
Query unit is used for supporting directly to go out the Gi port service to AHR inquiry AP;
Transmitting element two is used for when query unit is obtained described AP and supported directly to go out the Gi port service, transmits to described AP to comprise described core net addresses distributed data channel and set up information;
Receiving element three is used to receive that to comprise AP be that the data channel of the IP address of described terminal distribution is set up response;
Transmitting element three is used for comprising the data channel foundation response that described AP is the IP address of described terminal distribution to the terminal transmission.
The embodiment of the invention also provides a kind of communication system, comprising:
Access point AP, be used for receiving element, be used for the data that receiving terminal sends, destination address according to preset routing table and described data, whether next jumping network element of judging the destination address correspondence of described data is access gateway AG, when the next hop address of the destination address correspondence of described data is not AG, described data are sent to described destination address by described next jumping network element, when the next hop address of the destination address correspondence of described data is AG, according to AP is that the IP address and the GGSN of terminal distribution is the mapping relations of the address of terminal distribution, is the address of terminal distribution with the IP address transition of described data for corresponding GGSN, when the next hop address of the destination address correspondence of described data is AG, be that the data of the address of terminal distribution send to AG for corresponding GGSN with the IP address transition;
Access gateway AG, be used to receive the data channel of self terminal to set up information, transmit data channel to gateway general grouping service wireless support node GGSN and set up information, reception comprises the data channel foundation response that GGSN is the address of described terminal distribution, AP supports directly to go out the Gi port service to the AHR inquiry, when query unit is obtained described AP and is supported directly to go out the Gi port service, comprise described GGSN addresses distributed data channel to described AP forwarding and set up information, reception comprises the data channel foundation response that AP is the IP address of described terminal distribution, sends to terminal to comprise the data channel foundation response that described AP is the IP address of described terminal distribution;
Gateway general grouping service wireless support node GGSN is used to receive that described AG sends is the information of terminal distribution address to be the terminal distribution address, and addresses distributed is sent to described AG.
The embodiment of the invention also provides a kind of communication system, comprising:
Access point AP, be used for according to the data channel that presets, the data that receiving terminal sends, according to preset routing table among the described AP, judge whether pairing next jumping of destination address in the data that described terminal sends is described AG, when described judged result is AG for next jumping, according to described foundation described for the IP address of terminal distribution and described GGSN be the mapping relations of terminal distribution address, with the IP address transition in the data of described terminal transmission is that described GGSN is the address of terminal distribution, data after the conversion are sent to described AG, when described judged result is not AG for next jumping, the data that described terminal is sent send to next jumping network element of network side, described next jumping network element is transmitted to destination address, and described destination address is an application server address;
Access gateway AG is used for receiving the data that described AP sends according to the data channel that presets, and described data are sent to GGSN;
Gateway general grouping service wireless support node GGSN is used for receiving the described data that described AG sends according to the data channel that presets, and described data are sent to application server;
Internet Server is used to receive the data that described AP sends;
Application server is used to described terminal that the core net business is provided.
A kind of AP that the embodiment of the invention provides goes out method for routing, device and the communication system of Gi mouth, AP and network side are set up two data channel, wherein, article two, data channel is respectively to go out the data channel of Gi mouth and directly go out the data channel of Gi mouth from AP from core net, network side AP selects wherein path as transfer of data of described two data channel according to the pairing path of destination address in the preset routing table.Therefore, solved the same APN of sign different business in the prior art, can only set up a data channel that the Gi mouth, and may cause waste core-network resources.
Description of drawings
Fig. 1 is the building-block of logic of access point AP networking in the prior art;
Fig. 2 is the flow chart of the method for routing of a kind of outputting data through Gi port of providing of the embodiment of the invention one;
Fig. 3 be a kind of outputting data through Gi port of providing of the embodiment of the invention two method for routing flow chart;
Fig. 4 is the flow direction figure of data flow when terminal is communicated by letter with network side in the embodiment of the invention two;
Fig. 5 is that AP carries out the flow chart that protocol stack translation is handled to data in the embodiment of the invention two;
Fig. 6 is the logical block figure of a kind of access point AP of providing in the embodiment of the invention four;
Fig. 7 is the logical block figure of a kind of access gateway AG of providing in the embodiment of the invention six;
Fig. 8 is the composition diagram of a kind of communication system of providing in the embodiment of the invention seven;
Fig. 9 is the composition diagram of a kind of communication system of providing in the embodiment of the invention eight;
Figure 10 is the composition diagram of a kind of communication system of providing in the embodiment of the invention nine.
Embodiment
AP is according to the difference of destination address in the preset routing table in embodiments of the present invention, judge that terminal is to visit Internet business or visit core net business, solved the same APN of the different business that identifies in the prior art, a data channel that the Gi mouth can only be set up, problem may be caused the waste of core-network resources.A kind of AP that the embodiment of the invention is provided below in conjunction with specific embodiment goes out method for routing, device and the communication system of Gi port service and does explanation.
Embodiment one, a kind of method for routing of outputting data through Gi port, and referring to shown in Figure 4, this method comprises:
Step 1, access point are that terminal is set up from core net to go out the data channel of Gi mouth and point out the data channel of Gi mouth from access;
The method for routing of a kind of outputting data through Gi port that the employing embodiment of the invention one provides, AP and network side are set up two data channel, wherein, article two, data channel is respectively to go out the data channel of Gi mouth and directly go out the data channel of Gi mouth from AP from core net, network side AP selects wherein path as transfer of data of described two data channel according to the pairing path of destination address in the preset routing table.Avoided in the prior art APN only setting up a data channel, when the business of APN sign has when a plurality of, and may cause waste core-network resources.
The embodiment of the invention one is the general description of the method for routing of a kind of outputting data through Gi port that the embodiment of the invention is provided, the following describes that the embodiment of the invention provides a preferred embodiment---embodiment two.
Embodiment two, a kind of method for routing of outputting data through Gi port, and the data channel that this method goes out the Gi mouth from the core net specifically GGSN from core net goes out the Gi mouth.Referring to shown in Figure 5, this method comprises:
Step H1: terminal sends the PDP context activation request to network side, wherein, comprises APN in the described PDP Context request;
Wherein, the transmission PDP context activation request among the step H1 carries information and the APN that demanding terminal and network side are set up data channel; It will be appreciated that the form of beared information can have multiple, the concrete form of being given an example out in the present embodiment is the PDP context activation request, should not understand the restriction to the embodiment of the invention.
Step H2: network side AG transmits through AP, receives the PDP context activation request, obtains in the described PDP Context request to comprise APN, and AG judges the business of described APN representative according to the information that presets, and the business of judging this APN representative is to go out the Gi mouth;
Wherein, the information that presets on AG described in the step H2 comprises: the business of APN representative or the business of APN association.The described information that presets can also comprise: whether APN representative or related business can go out the information of Gi mouth.If whether described APN representative or related business can go out the information of Gi mouth when being default, then AG can judge all business and can go out the Gi mouth.It will be appreciated that the information that presets on the AG can be operator's configuration, is kept on the AG.AG herein is the IAD that the AP under the terminal is linked into core net.
Step H3:AG sends and creates the PDP Context request to GGSN according to the judged result among the step H2;
Wherein, carrying in the creation PDP Context request that sends among the step H3 and requiring GGSN is the request of terminal distribution IP address.Wherein, carry require GGSN be the concrete form of request of terminal distribution IP address except that creating the PDP Context request, other form can also be arranged.In the following literal about creating the understanding of PDP Context request, can be with reference to explanation herein.
Step H4:GGSN gives the terminal distribution address after receiving and creating the PDP Context request;
Step H5:GGSN sends the establishment PDP Context and responds to AG, wherein, comprises that GGSN is the address of terminal distribution in the described establishment PDP Context response;
Whether the AP that step H6:AG sends inquiry and described terminal communication supports directly to go out the information of business of Gi mouth to AHR;
Step H7:AHR judges according to the Query Information that receives whether described AP supports directly to go out the Gi mouth, and the information that transmission comprises Query Result is to AG, if Query Result enters step 8 for being, if Query Result enters step 12 for not;
Wherein, carry out the time of described step H6 and step H7, can be with execution in step 3 to step 5 simultaneously, promptly when the business of judging APN representative among the step H2 be can go out the Gi mouth after, whether the AP that can carry out GGSN simultaneously and be terminal distribution address and inquiry and terminal communication can support directly to go out the Gi mouth.
After the information of the Query Result that establishment PDP Context response that step H8:AG receives and/or AHR send, AG and terminal are set up RAB;
Wherein, the method that AG and UE set up RAB among the described step H8 is a prior art.
Step H9: if judged result is that AP supports directly to go out the Gi mouth among the step H7, then AG sends and creates the PDP Context request to AP, wherein, comprises in the request of described establishment PDP Context that GGSN is the address of terminal distribution;
Step H10:AP gives described terminal distribution address after receiving and creating the PDP Context request, and setting up address and the GGSN that AP is described terminal distribution is the mapping relations of the address of described terminal distribution;
Wherein, setting up the mapping relations that address that AP is described terminal distribution and GGSN be the address of described terminal distribution among the described step H10 specifically comprises: according to the sign of terminal in AP is unique, GGSN is that address and the AP of described terminal distribution is that the address of described terminal distribution is related with the unique identification of terminal in AP, has realized that GGSN is the mapping between the address of described terminal distribution and the address that AP is described terminal distribution.
Step H11:AP sends the establishment PDP Context and responds to AG, wherein, comprises that AP is the address of terminal distribution in the described establishment PDP Context response;
Wherein, need to prove that step H8 also can be behind step H11, promptly AP is the foundation of carrying out RAB after the success of terminal distribution address again.
Step H12:AG sends PDP context activation and responds to terminal, wherein, comprises that AP is the address of terminal distribution in the described PDP context activation response;
Wherein, it will be appreciated that, in the PDP context activation response that sends in step H12 also can be that GGSN is the address of terminal distribution, if like this, when the data that terminal sends directly go out the Gi mouth by AP, comprising needs to carry out the NAT conversion in the packet of data, be that the address transition of terminal distribution is that AP is the address of terminal distribution with GGSN in the terminal, and AP sends out the Gi mouth with data.
Step H13: terminal receives the PDP context activation response that AG sends, and comprises that AP is the address of terminal distribution in the described PDP context activation response;
Wherein, step H1 has realized that to step H13 terminal and network side set up the process of two data channel, and described two data channel comprise: the data channel of the data channel of visit core net business and visit Internet business.
Step H14: according to preset routing table among data channel of setting up and the AP, terminal and network side carry out data communication.
Wherein, the method of the data communication that terminal and network side carry out among the step H14, referring to shown in Figure 6, specifically comprise: the data based data channel of finishing of having set up that terminal sends, with the routing table among the AP, judging next jumping that sends data is AG, and then AP sends the data to AG, AG sends the data to GGSN, and data go out application server on the Gi mouth visit core net by GGSN; When judging the destination address that sends data is that Internet goes up the address, and then AP directly sends to the network element that next jumps indication with data, and is transmitted to destination address among the Internet by this network element.Described terminal is called upstream data with data via the data that the equipment of network side arrives destination address, and in like manner, the data that network side sends to terminal are called downlink data.
Need to prove, terminal is carried out in the communicating by letter of data with network side in step H14, after the AP of network side receives the data of terminal transmission, to processing method of data,, specifically comprise: according to the routing table of self preserving referring to shown in Figure 7, destination address in the data that the terminal that judgement receives sends is the address in the core net, still the online address of Internet judges that promptly next jumping of destination address correspondence is AG in the routing table, or other equipment; If be judged as destination address in these data is that Internet goes up the address, and then AP is to processing, processing on the L2 layer and the processing of bottom carrying on the L1 layer carried out of this data order.If to distribute to the address of terminal be the subnet address that is subordinated to AP to AP in step H10, then AP to data carry out the L2 upper strata handle after, also comprise before the processing of bottom carrying: network address translation (NAT:network address translators) is carried out in the address to the terminal that comprises in the data, is called for short the NAT conversion.The effect of described NAT conversion is that the address transition with terminal in the AP subnet is outer net address.Described NAT is converted on the IP layer and handles.
If the destination address in the data that the judgement terminal sends is address in the core net, promptly next jumping of this destination address correspondence is AG in routing table, and then AP carries out to this data order that processing, GPRS Tunnel Protocol (the GTP-U:GPRS Tunneling Protocol forthe user plane) layer of processing, user's face on the L2 layer on the L1 layer handled, the IP layer is handled and the processing of bottom carrying.Described AP carries out the processing on the L1 layer, the processing on the L2 layer, the IP message that UE is sent to these data and carries out the NAT conversion, GTP-U handles, the IP layer is handled and the bottom carrying be treated to prior art.
Wherein, the above L1 layer is the ground floor in the wireless network, i.e. physical layer; Described L2 layer is the wireless network second layer, comprises media access control layer (MAC:MediaAccess Control), RLC, PDCP (PDCP:packet data convergence protocol) layer.The processing of described bottom carrying is at the processing that comprises in the transmission network on link layer and the physical layer.It is to transmit on the tunnel between AP and AG at data that described GTP-U handles, and the processing that data are carried out.The IP message that terminal is sent carries out the NAT conversion, can be that the private net address with terminal is converted to IP address unique on the IP network.Above-described data processing is a prior art.
The processing of carrying out when the data that AP goes up Internet or AG sends, send to the network element that next jumps indication with the above-mentioned data that terminal is sent, and be transmitted among the Internet destination address or send to before the AG by this network element, the method for the processing that data are carried out is opposite.The processing that can carry out with reference to the data that above-mentioned AP sends terminal draws AP easily to Internet goes up or AG sends processing method of data.
Wherein, need to prove, the effect of preset routing table is among the AP described in the step H14, when AP receives the data of terminal transmission, judge data forwarding to AG according to the information in the routing table, still forward the data to the network element of jumping indication to next, and be transmitted to destination address among the Internet by this network element.Wherein, preset routing table can be that operator's telemanagement is handed down to AP, also can be to be generated in the near-end configuration of AP by the user.Therefore, a kind of AP that the embodiment of the invention two provides goes out the method for routing of Gi port service, before step H1, can also comprise:
Step H15: in AP, preset routing table.
Wherein, the method that presets routing table described in the step H15 can be: operator's telemanagement is handed down to AP, also can be to be generated in the near-end configuration of AP by the user.Described routing table specifically can be as following table 1, wherein, supposes that AP is that the address of terminal distribution is 192.168.0.1; The address of application server is 10.0.0.1 in the core net business; The destination address of the Internet business of UE expectation visit is 210.45.0.1.Destination address is under the situation about giving tacit consent in following table 1, then to judge the destination address that comprises in the data be the data of 10.0.0.1 to AP, sends to AG by AP, remaining destination address, AP sends the data to next network element of jumping indication, is forwarded to server on the Internet by network element then.
| Destination address | Mask | Next jumping |
| 10.0.0.1 | 255.0.0.0 | AG |
| Acquiescence default | Acquiescence default | Network element address |
Table 1
A kind of AP that the embodiment of the invention two provides goes out the method for routing of Gi port service, the beneficial effect of this method is: under the condition of not transforming the existing network side apparatus, an APN is set terminal and network layer is set up two data channel, described two data channel are respectively the data channel of visit core net business and the data channel of visit Internet business, network side AP selects wherein path as transfer of data of described two data channel according to the pairing path of destination address in the preset routing table.Solved the different business of same APN sign in the prior art, can only set up a data channel that the Gi mouth, adopted preset routing table to avoid causing waste core-network resources.
More than be the explanation of method that the embodiment of the invention is provided, below the device that the embodiment of the invention provides done explanation.
Embodiment three, the embodiment of the invention also provides a kind of method for routing of outputting data through Gi port, this method is similar to the method that embodiment two provides, difference is, the AG of network side and GGSN are two independent entity among the embodiment two, in fact, GGSN can be integrated among the AG, the embodiment of the invention three is integrated in GGSN among the AG just, realize original in GGSN, carrying out of task by AG, be that AG not only will carry out the business of judging described APN representative, the business of judging this APN representative is to go out the Gi mouth; Also to give the terminal distribution address, be reached for terminal and set up the passage that goes out the Gi mouth from GGSN.Therefore, the method that provides of the embodiment of the invention comprises:
Step F 1, step F 2 are corresponding similar with step H1, H2 among the embodiment two, the explanation in can reference example two;
Step F 3:AG is to the terminal distribution address; Be to realize the performed operation of GGSN among the embodiment two among the AG simultaneously.
Step H6 to step F 13 and the embodiment two is corresponding similar to step H15 for step F 4, the explanation in can reference example two.
A kind of AP that the embodiment of the invention three provides goes out the method for routing of Gi port service, the beneficial effect of this method is: integrated under the condition of GGSN among the AG in the network equipment, an APN is set terminal and network layer is set up two data channel, described two data channel are respectively the data channel of visit core net business and the data channel of visit Internet business, network side AP selects wherein path as transfer of data of described two data channel according to the pairing path of destination address in the preset routing table.Solved the different business of same APN sign in the prior art, can only set up a data channel that the Gi mouth, adopted preset routing table to avoid causing waste core-network resources.
Embodiment four, and a kind of access point AP referring to shown in Figure 6, comprising: receiving element 101, distribution address location 102, transmitting element 103, data processing unit 105, address mapping unit 106 and judging unit 107.
Wherein, described receiving element 101, be used for the information of setting up data channel that receiving terminal sends, the gateway general grouping service wireless support node GGSN for the information of terminal distribution address and described AG forwarding that receives the AG transmission is the address of terminal distribution, the data that receiving terminal sends receive the information of setting up the RAB RAB between terminal and the described AG;
Distribute address location 102, be used to described terminal distribution Internet protocol IP address; Wherein, this unit also can be included on dynamic host allocation protocol (the DHCP:Dynamic HostConfiguration Protocol) server that links to each other with AP, and AP can obtain and use this distribution address location 102.
Transmitting element 103, be used to send the information of setting up the RAB RAB between terminal and the described AG, sending described is that the IP address of terminal distribution is to described AG, data after handling in the described data processing unit 105 are sent to described AG, or will be judged as next jumping that negative data directly send to network side in the described judging unit 107;
If the address that terminal is assigned with is the subnet address that is subordinated to AP, and AP is according to the information in the configuration routing table unit 104, the data of judging the terminal transmission are to send to the network element that next jumps indication, and be transmitted to destination address among the Internet by this network element, then the NAT conversion is carried out in the address that data processing unit 105 also is used for data that described terminal is sent among the AP, and address transition is the address that can discern in the IP network in the data that terminal is sent.Wherein, realize in the data processing unit 105 that the logical block to the function of data NAT conversion can be the equipment with NAT translation function that AP obtains.
Judging unit 107 is used for the preset routing table according to AP, judges whether pairing next jumping of destination address in the data that terminal sends is described AG;
If AP is according to the information in the configuration routing table unit 104, the data of judging the terminal transmission are will send to destination address on core net, and AP and GGSN have been respectively this terminal distribution address, then among the AP data processing unit 105 can also to be used for according to the AP that address mapping unit 106 is set up be that the address and the GGSN of terminal distribution is the mapping relations of the address of terminal distribution, the data that terminal sends are carried out the NAT conversion, and the equipment in the core net of making can be discerned the address of this terminal.
A kind of AP that the embodiment of the invention four provides, can also comprise configuration routing table unit 104, be used to dispose routing table, wherein, described configuration routing table can be that AP receives the routing table that information generates under operator's telemanagement, also can be by the routing table of user in the near-end configuration generation of AP.
A kind of AP that the embodiment of the invention four provides, distributing address location 102 among this AP is the terminal distribution address, set up from going out the data channel of Gi mouth between the AP, AP judges that according to routing table in the configuration routing table unit 104 data of the terminal transmission that receives are from going out the Gi mouth between the AP, still by AP described data being sent to AG.Adopt this AP, network side can utilize this AP to set up two data channel, and according to preset routing table among the AP, AP sends data in next equipment of transferring network side, avoids causing the waste to core-network resources.
Embodiment five, a kind of access point AP, and this access point AP is similar to the AP that embodiment four provides, and its difference specifically can be with reference to following explanation, and the AP that present embodiment provides comprises: receiving element, judging unit, transmitting element one, processing unit and bill unit two.
Wherein, receiving element is used for the data that receiving terminal sends;
Judging unit is used for the destination address according to preset routing table and described data, judges whether next jumping network element of the destination address correspondence of described data is access gateway AG;
Transmitting element one is used for when the next hop address of the destination address correspondence of described data is not AG, with described data by described next jump network element and send to described destination address;
Processing unit, be used for when the next hop address of the destination address correspondence of described data is AG, according to AP is that the IP address and the GGSN of terminal distribution is the mapping relations of the address of terminal distribution, is the address of terminal distribution with the IP address transition of described data for corresponding GGSN;
Transmitting element two is used for when the next hop address of the destination address correspondence of described data is AG, is that the data of the address of terminal distribution send to AG with the IP address transition for corresponding GGSN.
Need to prove that this AP can also comprise: storage element is used to store routing table.
Explanation by the above AP that present embodiment is provided, this AP can be according to the address in the data that receive the terminal transmission, judge the address of next jumping of data, according to judged result data are sent, with the more direct destination address that sends to of data, thereby avoid causing waste to core-network resources.
Embodiment six, and a kind of access gateway AG referring to shown in Figure 7, comprising: first receiving element 201, judgement business unit 202, first transmitting element 203 and query unit 207.This AG can also comprise that RAB sets up unit 204.Wherein,
Described first receiving element 201, be used for the PDP context activation request that receiving terminal sends, receive the inquiry response that includes Query Result that AHR sends, receive the establishment PDP Context response that AP and GGSN send, comprising address and the GGSN that AP is a terminal distribution respectively in the described PDP Context response is the address of terminal distribution, the data that receiving terminal or network side send;
Wherein, for the ease of understanding first receiving element 201, this first receiving element can specifically comprise:
Receiving element one is used to receive the data channel of self terminal to set up information;
Receiving element two is used to receive that to comprise core net be that the data channel of the address of described terminal distribution is set up response;
Receiving element three is used to receive that to comprise AP be that the data channel of the IP address of described terminal distribution is set up response;
First transmitting element 203, be used to send Query Information to AHR, described Query Information is used to inquire about and the CAMEL-Subscription-Information of the AP of this terminal communication goes out the Gi port service between whether supporting, send and create the PDP Context request to AP and GGSN, sending PDP context activation responds to terminal, comprise that AP is the address of terminal distribution, sends data to terminal or network side in the described PDP context activation response;
Wherein, for the ease of understanding first transmitting element 203, this first transmitting element 203 specifically can comprise
Transmitting element one is used for transmitting data channel to core net and sets up information;
Transmitting element two is used for when query unit is obtained described AP and supported directly to go out the Gi port service, transmits to described AP to comprise described core net addresses distributed data channel and set up information;
Transmitting element three is used for comprising the data channel foundation response that described AP is the IP address of described terminal distribution to the terminal transmission.
RAB sets up unit 204, is used for setting up RAB by AP with terminal and is connected;
This AG has the data channel that above logic function module can be set up terminal and network side, carries out the data communication of terminal and network side.This AG can also comprise judgement outlet port unit 205, is used for judging whether the business of the APN representative of the PDP context activation request that receives can go out the Gi mouth; Wherein, whether the business of the APN that judges among AG representative can go out the foundation of Gi mouth can be by operator's configuration, does not judge outlet port unit 205 then the AG acquiescence can go out the Gi mouth to all business if do not comprise among the described AG.
This AG can also comprise GGSN functional unit 206, is used to realize the GGSN function.Wherein, because GGSN functional unit 206 is integrated on the AG, this GGSN is transformed makes this GGSN can discern the address that AP is a terminal distribution, in GGSN functional unit 206, can give the terminal distribution address.
More than the explanation of a kind of AG that the embodiment of the invention six is provided, this AG can be respectively and the GGSN establishment PDP Context of communicating by letter with AP, set up the data channel of terminal access core net business and the data channel of visit Internet business, realize that terminal and network side communicate by described two data passages.
The embodiment of the invention also provides a kind of communication system, below in conjunction with specific embodiment this communication system is described.
Embodiment seven, a kind of communication system, and this communication system can be set up the data channel of two outputting data through Gi port after receiving the information of setting up data channel that terminal sends, be respectively to go out the data channel of Gi mouth and go out the data channel of Gi mouth from AP from GGSN.Referring to Fig. 8, comprising: access point AP501, IAD 502, gateway general grouping service wireless support node GGSN503.
Access point AP501, the information of setting up data channel that receiving terminal sends, the information of setting up data channel that receives is sent to access gateway AG, set up the RAB RAB between terminal and the described AG, the gateway general grouping service wireless support node GGSN for the information of terminal distribution address and described AG forwarding that receives described AG transmission is the address of terminal distribution, be described terminal distribution Internet protocol IP address, set up describedly, be transmitted to terminal by described AG for the IP address of terminal distribution described for the IP address of terminal distribution and described GGSN are the mapping relations of terminal distribution address;
Access gateway AG 502, be used to receive the described information of setting up data channel, the information that is sent as the terminal distribution address is given GGSN, receiving GGSN is the address of terminal distribution, whether AP supports directly to go out the Gi port service under obtaining terminal, if, the information that is sent as the terminal distribution address is given described AP, wherein, the described AP of sending to comprises that in the information of terminal distribution address GGSN is the address of terminal distribution, receiving the AP that described AP sends is the address of terminal distribution, send successfully set up data channel information to terminal;
Gateway general grouping service wireless support node GGSN503 is used to receive that described AG sends is the information of terminal distribution address to be the terminal distribution address, and addresses distributed is sent to described AG.
A kind of communication system that the embodiment of the invention seven provides can also comprise: AP attribution server AHR504, dynamic host allocation protocol Dynamic Host Configuration Protocol server 505, address allocation server 506.
AP attribution server AHR504 is used to described AG to provide the affiliated AP of terminal whether to support directly to go out the information of Gi port service.
Dynamic host allocation protocol Dynamic Host Configuration Protocol server 505 is used to described AP that the address of distributing to described terminal is provided.
Address allocation server 506 is used to GGSN to provide to distribute to the address of described terminal.
By above explanation to the embodiment of the invention five, this communication system can be after the information of setting up data channel that receives the terminal transmission, setting up the data channel of two outputting data through Gi port, is respectively to go out the data channel of Gi mouth and go out the data channel of Gi mouth from AP from GGSN.
Embodiment eight, a kind of communication system, and this communication system can send out the Gi mouth with data with the least possible routing times according to preset routing table among data channel that presets and the AP.Referring to Fig. 9, comprising: access point AP701, access gateway AG 702, gateway general grouping service wireless support node GGSN703, Internet Server 704 and application server 705.
Access point AP701, be used for according to the data channel that presets, the data that receiving terminal sends, according to preset routing table among the described AP, judge whether pairing next jumping of destination address in the data that described terminal sends is described AG, if, according to described foundation described for the IP address of terminal distribution and described GGSN be the mapping relations of terminal distribution address, with the IP address transition in the data of described terminal transmission is that described GGSN is the address of terminal distribution, data after the conversion are sent to described AG, if not, the data that described terminal is sent send to next jumping of network side;
Gateway general grouping service wireless support node GGSN703 is used for receiving the described data that described AG sends according to the data channel that presets, and described data are sent to application server;
A kind of communication system that the embodiment of the invention eight provides can also comprise: network address translation device 706, pairing next jumping of destination address that is used in the data that the described terminal of AP701 judgement sends is AG702, according to described foundation described for the IP address of terminal distribution and GGSN704 be the mapping relations of terminal distribution address, with the IP address transition in the data of described terminal transmission is that GGSN704 is the address of terminal distribution, and the data after the conversion are sent to AP701;
Can be understood as, need be when GGSN go out the Gi mouth when judging the data that terminal sends among the AP701, AP701 can carry out giving network address translation device 706 to the processing of data.
By above explanation to the embodiment of the invention seven, this communication system can select minimum routing times to send to destination address the data that terminal sends according to the data channel of two outputting data through Gi port that preset, and has saved the resource of network.
More than be the explanation of the summary of communication system that the embodiment of the invention is provided, below embodiment nine, be the embodiment of a preferable communication system that the embodiment of the invention is provided.
Embodiment nine, a kind of communication system.Referring to shown in Figure 10, comprising: access point 10, IAD 20, AP attribution server 30, Gateway GPRS Support Node 40, Internet Server 60 and application server 70.
Gateway GPRS Support Node 40, be used to receive the establishment PDP Context request that AG sends, be the terminal distribution address, send PDP Context and respond to AG, comprise the address that GGSN is a terminal distribution in the described PDP Context response, transmit the data between AG30 and the application service 70;
Can think that also Internet Server 60 is for terminal provides Internet service, application server 70 provides the core net business for terminal.Need to prove that network equipment comprises that the topmost effect of AP, AG, GGSN etc. is to terminal and provides between the server of service and carry out forwarding of data.Therefore, two kinds of sayings to Internet Server 60 and application server 70 more than come down to identical.
This communication system can also comprise NAT conversion equipment 80, Dynamic Host Configuration Protocol server 90 and address allocation server 100.
Wherein, described NAT conversion equipment 80, the address transition of the data that the terminal that is used for receiving sends is the address that can discern on the Internet, data on the Internet that receives are carried out opposite conversion, give the mapping management of the address of same terminal distribution respectively according to AP and GGSN, the address transition of the data that terminal is sent is that GGSN is the address of terminal distribution, and the data that the GGSN that correspondence receives sends are carried out opposite conversion;
Dynamic Host Configuration Protocol server 90 is used to access point 10 that the address of distributing to terminal is provided;
When terminal needs professional on the accesses network, at first need to set up data channel with network side.Terminal sends the PDP context activation request to network side, comprise APN in the described PDP Context request, after network side AG20 receives the PDP context activation request, obtain the APN in the PDP context activation request, judge the business of this APN representative, according to the configuration of operator to AG20, AG20 supports all business to go out the Gi mouth, therefore, AG20 sends and creates the PDP Context request to GGSN40, after GGSN receives this request, be the terminal configuration address, described address be included in the response of establishment PDP Context send to AG20; AG20 sets up RAB with terminal and is connected; AG20 sends inquiry AP and whether supports directly to go out the information of Gi mouth to AHR30, wherein, need to prove, AG20 sends the information whether described inquiry AP supports directly to go out the Gi mouth, can be to send the request of establishment PDP Context with above-mentioned AG20 to carry out simultaneously to GGSN40, promptly AG sets up the data channel that two terminals are communicated by letter with network side; AHR30 receives after whether described inquiry AP support directly to go out the information of Gi mouth, the information of preserving when opening an account according to AP, and whether the AP10 that inquiry links to each other with this terminal opens the business that directly goes out the Gi mouth, and AHR30 transmission Query Result is to AG20; Support directly to go out the Gi port service if Query Result is AP10, then AG20 sends and creates the PDP Context request to AP10; AP10 receives after the request of described establishment PDP Context gives AP10, is the terminal distribution address, sets up the mapping relations between the address that AP10 and GGSN40 be respectively terminal distribution, the AP10 addresses distributed is included in to create in the PDP Context response send to AG20; AG20 obtains the address that AP10 is a terminal distribution after receiving the establishment context request of A10 transmission, described address packet is contained in the PDP context activation response sends to terminal; If Query Result is that AP10 does not support directly to go out the Gi port service among the AHR30, then AG20 directly sends PDP context activation and responds to terminal, includes the address that GGSN40 is a terminal distribution in the described PDP context activation response.
By above explanation, in a kind of communication system that the embodiment of the invention nine provides, set up the professional and operational data channel of visit Internet of terminal access core net, terminal is if visit core net when professional, terminal sends data to AP20, AP20 receives described data, according to the routing table of preserving among the AP20, data are carried out the NAT conversion, with the AP addresses distributed that comprises in the data, be converted to the GGSN addresses distributed, data after the conversion are sent to AG20, send the data to GGSN40 by AG20 and arrive destination address on the core net, as application server 70; Core-network side application server 70 needs through opposite path service data to be sent to terminal; Terminal is if visit Internet when professional, terminal sends data to AP20, and AP20 receives described data, according to the routing table of preserving among the AP20, send the data to Internet and go up server 60, the last server 60 of Internet needs through opposite path service data to be sent to terminal.
If terminal is to belong on the subnet at AP20 place, then the terminal data that send to AP need be carried out the NAT conversion, and the subnet address of terminal is converted to the IP address, carry out the equipment of described NAT conversion, can be the NAT conversion equipments 80 that links to each other with AP20.Wherein, more than realizing described AP10 for the terminal distribution address transition is that GGSN40 is the equipment of the address of terminal distribution, also can be that NAT conversion equipment 80 is realized.
Wherein, the device that above-mentioned realization AP20 is the terminal distribution address can be that AP20 carries out, also can be that AP20 realizes by the Dynamic Host Configuration Protocol server 90 that links to each other with this AP, promptly be the terminal distribution address in Dynamic Host Configuration Protocol server, and the address after distributing is sent to AP20.In like manner, GGSN40 also can be retrieved as the address of terminal distribution from address allocation server 100.
Explanation by above a kind of communication system that the embodiment of the invention nine is provided, in this communication system after receiving the information of setting up data channel that terminal sends, set up the data channel of two outputting data through Gi port, this communication system can realize the data that terminal sends are sent to destination address by less routing times, has saved the resource of network.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises the steps: when carrying out
Foundation goes out the data channel of Gi mouth and points out the data channel of Gi mouth from access from core net;
The data that receiving terminal sends;
According to the destination address of preset routing table and described data, with described data send to described two the data passages corresponding with the destination address of described data wherein next in data channel jump network element.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
More than method for routing, related device and the communication system of a kind of outputting data through Gi port that the embodiment of the invention provided is described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (14)
1. the method for routing of an outputting data through Gi port is characterized in that, comprising:
Foundation goes out the data channel of Gi mouth and points out the data channel of Gi mouth from access from core net;
The data that receiving terminal sends;
According to the destination address of preset routing table and described data, with described data send to described two the data passages corresponding with the destination address of described data wherein next in data channel jump network element.
2. method according to claim 1 is characterized in that, described foundation goes out the data channel of Gi mouth and points out the data channel of Gi mouth from access from core net, specifically comprises:
The information of setting up data channel that receiving terminal sends;
The information of setting up data channel that receives is sent to access gateway AG;
Set up the RAB RAB between terminal and the AG;
The gateway general grouping service wireless support node GGSN for the information of terminal distribution address and described AG forwarding that receives described AG transmission is the address of terminal distribution;
Be described terminal distribution Internet protocol IP address;
Set up described for the IP address of terminal distribution and described GGSN be the mapping relations of terminal distribution address;
Be transmitted to terminal by described AG with described for the IP address of terminal distribution.
3. method according to claim 2, it is characterized in that, described destination address according to preset routing table and described data, with described data send to described two the data passages corresponding with the destination address of described data wherein next in data channel jump network element, specifically comprise:
According to the destination address of preset routing table and described data, judge whether pairing next jumping of destination address in the data that described terminal sends is described AG,
If pairing next jumping of destination address in the data that described terminal sends is described AG, described according to described foundation for the IP address of terminal distribution and described GGSN are the mapping relations of terminal distribution address, the IP address transition in the data that described terminal is sent is that described GGSN is the address of terminal distribution; Data after the conversion are sent to described AG;
If pairing next jumpings of destination address in the data that described terminal sends is not described AG, the data that described terminal is sent send in described access and point out next jumping network element in the data channel of Gi mouth.
4. method according to claim 2 is characterized in that, the information-bearing of setting up data channel that described terminal sends is in the request of packet data protocol PDP context activation.
5. method according to claim 2 is characterized in that, the gateway general grouping service wireless support node GGSN for the information of terminal distribution address and described AG forwarding that described AG sends is that the address of terminal distribution is carried in the request of establishment PDP Context.
6. according to each described method of claim 1 to 5, it is characterized in that in the data channel of Gi mouth next pointed out in described access, and to jump network element be main frame, gateway or router.
7. an access point AP is characterized in that, comprising:
Receiving element is used for the data that receiving terminal sends;
Judging unit is used for the destination address according to preset routing table and described data, judges whether next jumping network element of the destination address correspondence of described data is access gateway AG;
Transmitting element one is used for when the next hop address of the destination address correspondence of described data is not AG, with described data by described next jump network element and send to described destination address;
Processing unit, be used for when the next hop address of the destination address correspondence of described data is AG, according to AP is that the IP address and the GGSN of terminal distribution is the mapping relations of the address of terminal distribution, is the address of terminal distribution with the IP address transition of described data for corresponding GGSN;
Transmitting element two is used for when the next hop address of the destination address correspondence of described data is AG, is that the data of the address of terminal distribution send to AG with the IP address transition for corresponding GGSN.
8. AP according to claim 7 is characterized in that, described AP can also comprise:
Memory cell is used to store routing table.
9. an access gateway AG is characterized in that, comprising:
Receiving element one is used to receive the data channel of self terminal to set up information;
Transmitting element one is used for transmitting data channel to core net and sets up information;
Receiving element two is used to receive that to comprise core net be that the data channel of the address of described terminal distribution is set up response;
Query unit is used for supporting directly to go out the Gi port service to AP attribution server AHR inquiry AP;
Transmitting element two is used for when query unit is obtained described AP and supported directly to go out the Gi port service, transmits to described AP to comprise described core net addresses distributed data channel and set up information;
Receiving element three is used to receive that to comprise AP be that the data channel of the IP address of described terminal distribution is set up response;
Transmitting element three is used for comprising the data channel foundation response that described AP is the IP address of described terminal distribution to the terminal transmission.
10. AG according to claim 9 is characterized in that, described AG also comprises: RAB RAB sets up the unit, is used for setting up RAB RAB by AP and terminal.
11. a communication system is characterized in that, comprising:
Access point AP, be used for the data that receiving terminal sends, destination address according to preset routing table and described data, whether next jumping network element of judging the destination address correspondence of described data is access gateway AG, when the next hop address of the destination address correspondence of described data is not AG, described data are sent to described destination address by described next jumping network element, when the next hop address of the destination address correspondence of described data is AG, according to AP is that the IP address and the GGSN of terminal distribution is the mapping relations of the address of terminal distribution, is the address of terminal distribution with the IP address transition of described data for corresponding GGSN, when the next hop address of the destination address correspondence of described data is AG, be that the data of the address of terminal distribution send to AG for corresponding GGSN with the IP address transition;
Access gateway AG, be used to receive the data channel of self terminal to set up information, transmit data channel to gateway general grouping service wireless support node GGSN and set up information, reception comprises the data channel foundation response that GGSN is the address of described terminal distribution, AP supports directly to go out the Gi port service to AP attribution server AHR inquiry, when query unit is obtained described AP and is supported directly to go out the Gi port service, comprise described GGSN addresses distributed data channel to described AP forwarding and set up information, reception comprises the data channel foundation response that AP is the IP address of described terminal distribution, sends to terminal to comprise the data channel foundation response that described AP is the IP address of described terminal distribution;
AP attribution server AHR is used to described AG to provide the affiliated AP of terminal whether to support directly to go out the information of Gi port service;
Gateway general grouping service wireless support node GGSN is used to receive that described AG sends is the information of terminal distribution address to be the terminal distribution address, and addresses distributed is sent to described AG.
12. system according to claim 11 is characterized in that, described system also comprises:
The dynamic host allocation protocol Dynamic Host Configuration Protocol server is used to described AP that the address of distributing to described terminal is provided.
13. system according to claim 11 is characterized in that, described system also comprises:
Address allocation server is used to GGSN to provide to distribute to the address of described terminal.
14. a communication system is characterized in that, comprising:
Access point AP, be used for according to the data channel that presets, the data that receiving terminal sends, according to preset routing table among the described AP, judge whether pairing next jumping of destination address in the data that described terminal sends is described AG, when described judged result is AG for next jumping, according to set up for the IP address of terminal distribution and GGSN be the mapping relations of terminal distribution address, with the IP address transition in the data of described terminal transmission is that described GGSN is the address of terminal distribution, data after the conversion are sent to described AG, when described judged result is not AG for next jumping, the data that described terminal is sent send to next jumping network element of network side, described next jumping network element is transmitted to destination address, and described destination address is an application server address;
Access gateway AG is used for receiving the data that described AP sends according to the data channel that presets, and described data are sent to GGSN;
Gateway general grouping service wireless support node GGSN is used for receiving the described data that described AG sends according to the data channel that presets, and described data are sent to application server;
Internet Server is used to receive the data that described AP sends;
Application server is used to described terminal that the core net business is provided;
Network address translation device, pairing next jumping of destination address that is used in the data that the described terminal of described AP judgement sends is AG, according to set up for the IP address of terminal distribution and GGSN be the mapping relations of terminal distribution address, with the IP address transition in the data of described terminal transmission is that described GGSN is the address of terminal distribution, and the data after the conversion are sent to described AP;
Described AP is used for, and the data after the described conversion are sent to described AG.
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| CN2008101894538A CN101436991B (en) | 2008-12-24 | 2008-12-24 | Routing method, apparatus and communication system for outputting data through Gi port |
| PCT/CN2009/075978 WO2010072161A1 (en) | 2008-12-24 | 2009-12-24 | Routing method, apparatus and communication system for data exiting a gi interface |
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| CN101436991B (en) * | 2008-12-24 | 2011-04-13 | 华为技术有限公司 | Routing method, apparatus and communication system for outputting data through Gi port |
| US8549117B2 (en) * | 2009-11-05 | 2013-10-01 | Telefonaktiebolaget L M Ericsson (Publ) | Method for address translator traversal in 3GPP networks |
| CN102083173B (en) * | 2009-11-26 | 2014-12-10 | 中国移动通信集团广东有限公司 | Network access control method, equipment and gateway GPRS support node |
| CN102118267B (en) * | 2011-01-19 | 2016-11-23 | 刘敬梅 | It is applied to route device and the redundancy fault-tolerant system of multistage functional node redundancy fault-tolerant |
| CN102802201B (en) * | 2011-05-27 | 2017-03-15 | 上海贝尔股份有限公司 | Communication means under Cellular Networks and WLAN UNE environment |
| WO2013053120A1 (en) * | 2011-10-13 | 2013-04-18 | 华为技术有限公司 | Shunt decision method, and high mobility state identification method and device |
| CN106603375B (en) * | 2016-12-07 | 2019-09-17 | 京信通信系统（中国）有限公司 | LTE base station GTP tunnel multiplexing method and system and device |
| CN114143260B (en) * | 2021-11-29 | 2023-06-30 | 上海商汤智能科技有限公司 | Data transmission system and method, electronic device and storage medium |
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| KR100447197B1 (en) * | 2002-07-16 | 2004-09-04 | 엘지전자 주식회사 | Method for Controlling Routing of Access Point Name in Gateway General packet radio service Support Node |
| CN100484085C (en) * | 2003-12-05 | 2009-04-29 | 华为技术有限公司 | Method for securing quality of transmitted group data service |
| KR100950653B1 (en) * | 2006-02-28 | 2010-04-01 | 삼성전자주식회사 | Method and system for transmitting/receiving data in the heterogeneous communication systems |
| US8103285B2 (en) * | 2007-04-19 | 2012-01-24 | Kyocera Corporation | Apparatus, system and method for determining a geographical location of a portable communication device |
| CN101436991B (en) * | 2008-12-24 | 2011-04-13 | 华为技术有限公司 | Routing method, apparatus and communication system for outputting data through Gi port |
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