CN1284338C - A multi-protocol data gateway and method for implementing communication thereof - Google Patents

A multi-protocol data gateway and method for implementing communication thereof Download PDF

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CN1284338C
CN1284338C CN 03127989 CN03127989A CN1284338C CN 1284338 C CN1284338 C CN 1284338C CN 03127989 CN03127989 CN 03127989 CN 03127989 A CN03127989 A CN 03127989A CN 1284338 C CN1284338 C CN 1284338C
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data
processing module
gateway
authentication
mobile radio
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CN1543152A (en
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钱国良
徐悦
蒋纯波
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Petevio Institute Of Technology Co ltd
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Potevio Institute of Technology Co Ltd
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Abstract

The present invention discloses a multiprotocol data gateway based on IPv6. The multiprotocol data gateway is suitable for a communication network composed of various mobile networks. The gateway comprises an access service part and a medium gateway part, wherein the access service part is used for processing the protocol signaling of different received mobile networks, providing uniform authentication charging and controlling switch between different mobile networks and comprises a public signaling processing module and a plurality of signaling processing modules corresponding different protocol signaling; the medium gateway part is used for receiving and processing protocol data from different mobile networks, converting the protocol data to unified IPv6 protocol data and outputting the IPv6 protocol data and comprises a common data processing module and a plurality of data processing modules corresponding to different protocol data; the access service part and the medium gateway part transmit commands and data by a Mp interface between the access service part and the medium gateway part. The present invention simultaneously discloses an implementation method for the communication of the multiprotocol data gateway. When the method and the gateway are used, data communication and seamless switch among various mobile networks and interconnection and intercommunication between mobile networks and other networks can be realized.

Description

A kind of implementation method of multi-protocol data gateway communication
Technical field
The present invention relates to gateway technique, be meant a kind of multi-protocol data gateway realization method for communicating especially based on IPv6 (IPv6).
Background technology
Though second generation mobile communication system is increasingly mature as the development of global system for mobile communications (GSM), IS-95, this system provides voice service in Circuit-switched mode, and a spot of data service can only be provided.Along with the high speed development of internet (Internet) in recent years, based on the packet-switch technology of Internet protocol (IP) significant progress has been arranged, and will become the basis of future network.Meanwhile, data service has also become the mobile communication new growth point, and its vast potential for future development makes and it is believed that mobile network is with overall application IP technology realization data service.
At present, Wideband Code Division Multiple Access (WCDMA) (WCDMA), CDMA 2000 (CDMA2000) and TD SDMA (TD-SCDMA) system are the main flow systems of the third generation (3G) mobile communication, for the 3G (Third Generation) Moblie cooperative programme group (3GPP) and the 3GPP2 of the standard of formulation, IP will be as the important techniques direction.Among the 3GPP, the standard of WCDMA evolves to the all-IP of Release5 gradually from Release99, Release4; The data service of CDMA2000 is also fully based on IP.Therefore, the core net of future network will be a switching network of being made up of high-end router, carry out the quick forwarding of IP message, and the edge access layer of network can be intelligent more, various access technologies that can process user, carry out IP address assignment and route, protocol conversion, that finishes business converges functions such as user's authentication and accounting.Wherein, Release99, Release4 and Release5 are three versions of present WCDMA.
In various networkings and internetwork communication, gateway is very crucial, the requisite network equipment.Briefly, gateway is a kind of gateway, is used for two networks with identical or different architecture are coupled together, and two equipment in the network can be intercomed mutually.Relate to independently data gateway equipment of three classes in the existing various mobile communication system:
1) Serving GPRS Support Node (SGSN) and Gateway GPRS Support Node (GGSN)
Be mainly used in existing GPRS (GPRS) and WCDMA, wherein, gprs system is actual to be to introduce a kind of mobile communication system that forms after the data service in global system for mobile communications (GSM) system, in order to realize and the external packet data net, interconnected as Internet, and data service is provided.Fig. 1 is the networking schematic diagram of GPRS network, as shown in Figure 1, here, SGSN in system's packet domain the role and the role class of mobile switching centre/Visited Location Registor (MSC/VLR) in circuit domain seemingly, have the functions such as collection of network insertion control, Route Selection and forwarding, mobile management, session management, charge information.GGSN provides mobile network same external packet-switched as data gateway and router, as the intercommunication of Internet, the packet between packet domain user and the external data network is carried out route and encapsulation, and collecting charging information.Among the figure, dotted line is represented signaling interface, and solid line is represented signaling and data transfer interface.
The TD-SCDMA system can adopt the data gateway equipment identical with the WCDMA system.
2) packet data serving node (PDSN)
Be mainly used in CDMA 2000 1x systems, CDMA2000 1X network is built on second generation mobile communication system IS-95 basis, in order to data service to be provided.Fig. 2 is the networking schematic diagram of PDSN, as shown in Figure 2, here, the effect of PDSN is similar to the GGSN among the WCDMA, bear the data gateway between mobile radio communication and external packet data net and the function of router, the user who uses Packet data service is authenticated, for the mobile subscriber provides the data service access service, and collecting charging information.
3) access controller (AC)
Be mainly used in the wireless lan (wlan) system, the basic structure of wlan system is made of access point (AP) and access controller (AC), and, finally make the user realize the access service of mobile data in conjunction with Internet or the existing certificate server of other network (AS).Here, AP is the micro radio base station equipment of wlan network, finishes wireless access function, and AP also is a kind of network bridge, is used to be connected with spider lines and WLAN, and any WLAN terminal equipment all can insert outside Internet resources by corresponding AP.AC serves as gateway between internet and WLAN, its function comprises that packet encapsulation, route, forwarding realize IP operation; Support realizes access control based on the SIM card mode with based on the authentification of user of Web mode; Gather charge information.AC is the router supporting multiple Routing Protocol and support numerous network management functions, can directly or by user's remote dial authentication service (RADIUS) network link to each other with AS.
In order to provide service to the user, improve the traffic rating and the reliability of mobile communication, the notion of the network integration has been proposed.The so-called fusion just is meant two kinds of network interconnections supporting different protocol standards or covers identical zone simultaneously, supports to have double mode portable terminal and switches between two kinds of networks and roam.Mainly contain two classes: the GPRS or WCDMA and WLAN that can realize the network integration at present merge, and GSM and CDMA2000 1X merge.
For the fusion of GPRS and WLAN, operator increases the WLAN that disposes employing 802.11b technology at a lot of hot zones that have GPRS network, or disposes the WLAN that adopts the 802.11b technology at hot zones, special area that GPRS network does not cover.In such cases, the mobile data of low rate inserted during the GPRS mobile network can provide, and WLAN can provide the access of high speed wireless data for the user, so, dual-mode subscriber can be enjoyed at a high speed and two kinds of access waies of middle low speed, and, switching and the roaming of network support dual-mode subscriber between net.Dual-mode subscriber described here is meant to adopt supports bimodulus access module mobile terminal user.Generally, when dual-mode subscriber need switch between GPRS and WLAN, this user need be interrupted current connection, registers to the purpose network again, communicates after succeeding in registration again.
For the fusion of GSM and CDMA2000 1x, a kind of GSM 1X system has been proposed, make GSM user in CDMA2000 1X network, can use the data service of original business of GSM and CDMA20001X simultaneously.In such cases, GSM user uses GSM+CDMA2000 1X dual-mode handset, and seamless switching between GSM network and GSM1x network uses in CDMA2000 1x network and former GSM the same circuit domain business and data service of CDMA2000 1x in netting.
On network was realized, concrete way was: change the mobile network MSC partly of CDMA2000 1x into mobile exchange point (MSN), and service network adopts the relevant device of GSM fully.The function of MSN is with the signaling in the CDMA2000 1x wireless access network (RAN), the attaching position register (HLR), short message service center (SMSC) etc. that are mapped to MAP (MAP) agreement and GSM network are mutual, and the user still adopts the flow process of CDMA2000 1x Packet Service at the Packet Service of GSM 1x.
As can be seen from the above analysis, GSM 1x only considers to merge the circuit domain business of GSM and CDMA2000 1x, and do not consider the fusion of Packet data service, the dual-mode handset user is in CDMA2000 1x network, can use with gsm system in duplicate circuit domain, be the speech domain business, but the data service that provides by the PDSN in the CDMA2000 1x network can only be provided, have certain limitation.And the present situation that GPRS and WLAN merge is, when dual-mode subscriber moves to the WLAN coverage territory from the GPRS overlay area, need land again, can not guarantee dual-mode subscriber continuity of business when mobile between two kinds of networks like this.
The more important thing is, different wireless communication systems often uses different architectures and equipment to realize the function of data gateway, if operator runs the network of multiple standard simultaneously,, cause the serious wasting of resources with bringing the repeated construction of authentication, charging and backstage OSS.For the user, multimode user will be difficult to free-roaming, seamless switching in different network systems.And existing unified access method only provides limited fusion, does not have versatility, is unfavorable for the upgrading of network.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of communication means of multi-protocol data gateway, makes it can realize data communication and seamless switching between the various mobile communications networks.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of implementation method of multi-protocol data gateway communication, be applicable to the multi-protocol data gateway that connects more than one mobile radio communications simultaneously, described multi-protocol data gateway comprise have a common signaling processing module and more than one the signaling processing module of corresponding different agreement signaling access service part and have a common data processing module and the media gateway part of the data processing module of corresponding different agreement data more than; This method may further comprise the steps:
When a. subscriber equipment (UE) inserts current mobile radio communication,, send out the signaling processing module that the current affiliated mobile radio communication of correspondence self in the multi-protocol data gateway is given in the authentication request by the physical interface that self links to each other with the multi-protocol data gateway;
B. receive that the signaling processing module of authentication request obtains the authentication five-tuple of described UE from attaching position register, and the parameter in the authentication five-tuple is issued described UE;
C. described UE is according to the signal response value of the calculation of parameter that is obtained self, and the signal response value that calculates returned corresponding signaling processing module, whether the signal response value of relatively being calculated by this signaling processing module is consistent with the signal response value in the authentication five-tuple, if it is consistent, then authentication passes through, execution in step d; Otherwise the authentication failure, process ends;
D. described UE continues to set up data channel by the signaling processing module of mobile radio communication under current, and whether the judgment data passage set up success, if passage is set up successfully, then carry out transfer of data, enter step e, if passage is set up failure, then process ends;
E. whether real-time judge needs to re-register, if desired, then this UE by want new registration to the signaling processing module of mobile radio communication correspondence carry out authentication and data channel again and set up, return steps d; Otherwise, return step e.
Step e is described to be judged as: whether the type that detects the current affiliated mobile communications network of this UE in real time changes, if then need to re-register; Otherwise, do not need to re-register.Or be: judge whether to detect the current affiliated mobile radio communication request of switching that UE initiatively sends,, then need to re-register if detect; Otherwise, do not need to re-register.Or be: judge whether to detect the routing update of UE,, then need to re-register if detect; Otherwise, do not need to re-register.
Re-registering further described in the said process comprises:
B1.UE wants the signaling processing module of the mobile radio communication correspondence that new registration arrives to send the authentication request in the multi-protocol data gateway, this signaling processing module carries out authentication to this UE, and judge whether authentication is passed through, if pass through, then that UE is current communication channel from former registration mobile radio communication channel tuner to new registration mobile communication network channel, simultaneously, discharge this UE shared whole system resources in former registration mobile radio communication, enter step b2; Otherwise, process ends;
B2. this UE is based upon the data channel in the new registration mobile radio communication by the signaling processing module of new registration mobile radio communication correspondence in the multi-protocol data gateway.
This method further comprises: UE carries out authentication and data channel when setting up in the new registration mobile radio communication, preserve the data that all send to this UE by the common data processing module in the multi-protocol data gateway, after this UE data channel is set up successfully, send the total data of being preserved to this UE by newly-built data channel again.
Described transfer of data further comprises: the data that UE will transmit are sent in the multi-protocol data gateway and the corresponding data processing module of mobile communications network under self is current; This data processing module is encapsulated as IPv6 protocol data bag with the uniform data of receiving; Be sent to IP kernel heart net, in IP kernel heart net, transmit.
The described data channel of setting up is: under UE is current in the mobile radio communication, set up the connection between the data processing module port of corresponding current affiliated mobile radio communication in this UE and the multi-protocol data gateway.The described data channel of setting up also further comprises: set up the binding relationship that is connected with port in the common data processing module of multi-protocol data gateway, and generate the detailed call recorded information that is used to charge.
Therefore, multi-protocol data gateway provided by the present invention and communication implementation method thereof have following advantage and characteristics:
1) the present invention compares with existing mobile network's integration technology, and IPv6 multi-protocol data gateway has mainly solved in packet domain various wireless access technologys, as: whole fusions of WCDMA, TD-SCDMA, CDMA2000 and WLAN.Multiple wireless access system can be shared the resource of WCDMA service network, such as: attaching position register (HLR), short message mobile switching centre network service resources such as (SMSC), and unified authentication, authentication and charging is provided, greatly simplified the OSS of operator.
2) IPv6 multi-protocol data gateway of the present invention adopts control and the soft-exchange construction that transmission is separated, and meets the developing direction of next generation network.Have very big flexibility when separation architecture makes deployed with devices, according to actual conditions, the media gateway part can be concentrated deployment, also can be distributed in different zones at different application.So, control section can be placed in the server so that handle more flexible, and forwarding capability can directly be realized by hardware, to improve processing speed, therefore, the present invention can give full play to the disposal ability of server and the high-speed data transfer capability of data platform hardware, and system is with good expansibility.
3) user holds one and supports the portable terminal of multimodality can enjoy the Packet Service of multiple wireless access system, and supports this user to roam between multiple wireless access technology, guarantees the continuity of Packet Service in the roam procedure simultaneously.
When 4) between the different nets of realization, switching owing to the present invention, receive and store all data that the current user of switching should receive by the common data processing module in the multi-protocol data gateway, and after switching is finished, sending this user to, therefore realized the seamless switching between WCDMA and TD-SCDMA, CDMA 20001x, the wlan system.
5) the present invention adopts common signaling processing module and the unification of common data processing module to finish the collection and the processing of verification process and metering data, has guaranteed the realization of unified charging and unified certification.
6) IPv6 multi-protocol data gateway of the present invention adopts high performance hardware structure and open software design, have powerful data forwarding ability and computing ability, service quality at different levels (QoS) can be provided, be with good expansibility simultaneously, high reliability and high availability.
7) data gateway of the present invention is supported multiple function, as: high speed packet transmit, the conversion of IPv4 to the protocol conversion of IPv6, other variety of protocol to IPv6, support multiple wireless access way, have mobile management and session management, and service centers such as intelligent network and short message interconnect, provide QoS, authentication, authentication, charging information collecting, the data of different stage to intercept or the like.
8) data gateway of the present invention is supported various protocols, as: IPv6, IPv4, Iu-ps interface protocol between WCDMA and the TD-SCDMA, peer-peer protocol (PPP), MAP, TCAP Transaction Capability Application Part Signaling System Number 7s such as (TCAP), MTP3 user's adaptation layer (M3UA), SigTran agreements such as stream control transmission protocol (sctp), routing information protocol (rip), ospf Routing Protocols such as (OSPF), Simple Network Management Protocol (SNMP), TELENET, file transfer protocol (FTP) (FTP), HTTP(Hypertext Transport Protocol), Common Object Request Broker Architecture (CORBA) etc. relates to the agreement of webmaster, radius protocol or the like.
9) data gateway of the present invention provides multiple physical interface: Ethernet interface, ATM(Asynchronous Transfer Mode) interface and E1 interface.
Description of drawings
Fig. 1 is the networking schematic diagram of GPRS;
Fig. 2 is the networking schematic diagram of PDSN;
Fig. 3 is the basic composition structural representation of data gateway of the present invention;
Fig. 4 is interface and the annexation schematic diagram of data gateway of the present invention in actual networking;
Fig. 5 is the networking schematic diagram based on IPv6 multi-protocol data gateway of the present invention;
Fig. 6 realizes the basic flow sheet of data communication for IPv6 multi-protocol data gateway of the present invention;
Fig. 7 is the schematic flow sheet of authentication process.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
Data gateway proposed by the invention receives signaling and data from all kinds of mobile communications networks, and after unifying to handle, output is finished authentication based on the data or the unification of IPv6 agreement with MAP, therefore is referred to as the multi-protocol data gateway based on IPv6.Fig. 3 is the basic composition structural representation of data gateway of the present invention, referring to shown in Figure 3, the multi-protocol data gateway that the present invention is based on IPv6 mainly is made up of the two large divisions: access service (Access Server) part and media gateway (Media Gateway) part, wherein, access service partly be used for to the signaling of all kinds of mobile communication system input handle, the delivering of management and signaling and data, media gateway partly is used for the data of all kinds of mobile communication system inputs are handled and managed.The access service part partly interconnects by the bottom ethernet interface with media gateway, is used to transmit signaling or data message.
Wherein, the access service part further comprises again: handle WCDMA/TD-SCDMA signaling processing module, CDMA2000 signaling processing module and the WLAN signaling processing module of different mobile communication system incoming signalling respectively, and the common signaling processing module of carrying out public administration for signaling.Different types of mobile radio communication links to each other with each self-corresponding signaling processing module, such as: the WCDMA/TD-SCDMA signaling processing module is used to connect WCDMA or TD-SCDMA network; The CDMA2000 signaling processing module is used to connect the CDMA2000 network; The WLAN signaling processing module is used to connect wlan network, and the agreement that will adopt in the inhomogeneity mobile network by the termination of the agreement in each module function terminates herein, so that finish follow-up operation, such as: the used agreement unification of different mobile networks is converted to MAP, and then adopts MAP in HLR, to finish authentication; Or realize other mobile management flow process.
Specifically, the WCDMA/TD-SCDMA signaling processing module mainly is responsible for: session management; Be used to handle the mobile management of route (RA) renewal of WCDMA/TD-SCDMA; GTP-C termination and wireless access network application protocol (RANAP) agreement termination at Iu-PS interface; Customization applying portion (CAP) agreement termination at mobile network's enhanced logic of intelligent network.The CDMA2000 signaling processing module mainly is responsible for: at the termination of A11 interface protocol; Handle the switching between the PCF; The RADUIS authentication of termination CDMA2000 forwards to and uses MAP to authenticate in HLR, promptly finishes the function of unified certification.The WLAN signaling processing module mainly is responsible for: the RADUIS authentication of termination WLAN, and forward to and use MAP in HLR, to authenticate, promptly finish the function of unified certification.The common signaling processing module mainly is responsible for: charge information is handled; The media gateway management; HLR is to the MAP between the gateway for termination; Delivering between the Access Network of WCDMA/TD-SCDMA, the Access Network of CDMA2000 and the WLAN, said here handoff functions just refers to: in order to guarantee to carry out seamless switching between heterogeneous networks, signaling of carrying out between two networks and data transmit.
The media gateway part further comprises again: handle WCDMA/TD-SCDMA data processing module, CDMA2000 data processing module and the WLAN data processing module of different mobile communication system input data respectively, and the common data processing module of data being carried out public administration.Equally, different types of mobile radio communication links to each other with each self-corresponding data processing module, such as: the WCDMA/TD-SCDMA data processing module is used to connect WCDMA or TD-SCDMA network; The CDMA2000 data processing module is used to connect the CDMA2000 network; The WLAN data processing module is used to connect wlan network, will receive the uniform data that comes from each protocol interface by termination in each module and encapsulation function and be encapsulated as the IPv6 packet.
Specifically, the WCDMA/TD-SCDMA data processing module mainly is responsible for: the GTP-U agreement of termination Iu-PS interface, encapsulation IP bag and the dispose procedure of supporting the Iu interface.The CDMA2000 data processing module mainly is responsible for: generic route encapsulation (GRE) tunnel of termination CDMA2000 network A 10/A interface, encapsulation IPv6 packet.The WLAN data processing module mainly is responsible for: transmit the IP packet relevant with AC among the WLAN, comprise data that flow out and the data that enter AC from AC.The common data processing module mainly is responsible for: collection, the communication data content that provides service quality (QoS) to guarantee data such as mechanism, charging monitored, regularly or as required sent metering data, routing function, realization DHCP function, resolves domain name, IPv4 to the conversion of IPv6 agreement, when using MobileIP for client to Access Server, can select to realize the function of Foreign Agent (FA).IPv4 described here and the conversion between the IPv6 be because: different to the IP version that the Access Network partial data adopts with the IP version of outside PDN network using, common data processing module in the multi-protocol data gateway of the present invention is supported the two-way mutual conversion of two kinds of IP versions, and specific practice is to adopt dual stack approach.
Fig. 4 is interface and the annexation schematic diagram of data gateway of the present invention in actual networking, as shown in Figure 4, in actual networking, CDMA2000 grouping of network controlled function equipment (PCF) partly links to each other with Access Server as the A11 interface by Ethernet interface; The radio network controller of WCDMA and TD-SCDMA system (RNC) partly links to each other with Access Server as Iu-PS interface by atm interface; The AC of WLAN inserts Access Server part by Ethernet interface; Access Server is partly by E1 interface and Signaling System Number 7 net (SS7).The interconnection of the said equipment and module is used for the processing of signaling.
Referring to shown in Figure 4, the PCF of CDMA2000 network partly links to each other with Media Gateway as the A10 interface by Ethernet interface again; The RNC of WCDMA and TD-ACDMA system partly links to each other with Media Gateway as Iu-PS interface by atm interface; The AC of WLAN partly links to each other with Media Gateway by Ethernet interface; The gateway of multimedia short message (MMS) connects Media Gateway part by Ethernet interface.Simultaneously, adopt Mp to connect between Media Gateway part and the Access Server part; Media Gateway part directly is connected with IP kernel heart switching network.
Based on above-mentioned composition structure, annexation and the function supported, utilize IPv6 multi-protocol data gateway of the present invention to realize that the basic process of data communication is like this: after the user A in certain mobile communications network starts, user A at first sends the authentication request to IPv6 multi-protocol data gateway, under current, authenticate registration in the signaling processing module of mobile radio communication correspondence, such as: the current WCDMA net that belongs to of user A, then user A sends out the authentication request to the WCDMA signaling processing module in the data gateway Access Server part.If authentication passes through, then user A continues to set up data channel by the WCDMA signaling processing module, begins normal data transmission procedure.
When user A will switch to another different classes of mobile radio communication, this user A will be again sends the authentication request to the signaling processing module of the target mobile radio communication correspondence of switching, such as: user A will switch to CDMA 2000 from the WCDMA net, and then this moment, user A will send out the authentication request to CDMA 2000 signaling processing modules in the data gateway Access Server part.If authentication passes through, the common signaling processing module in the AccessServer part can notify the WCDMA signaling processing module to discharge relevant resource, and family A sets up data channel by CDMA 2000 signaling processing modules, begins normal transfer of data.
From the application of multi-protocol data gateway data communication process as can be seen, the Core Feature of IPv6 multi-protocol data gateway is: for WCDMA/TD-SCDMA, CDMA2000 and WLAN user provide data service, make it can visit external IP Packet Data Network (as Internet).For this reason, IPv6 multi-protocol data gateway relates to several important processes: subscription authentication authentication, data channel are set up, system is delivered and data transmission and processing.Here, system delivers and is meant when the user is switched between WCDMA/TD-SCDMA, CDMA2000 and WLAN, keeps professional uninterrupted.Above-mentioned several access module adopts identical access, authentication, counting equipment and mode, and subscriber equipment then adopts supports the portable terminal of multiple access module can carry out roaming communication in multiple Access Network.
Fig. 5 is the networking schematic diagram based on IPv6 multi-protocol data gateway of the present invention, as shown in Figure 5, data gateway of the present invention is in whole server position, links to each other with all kinds of mobile communications networks with interface by different agreements respectively, supports the intercommunication of multiple mobile communications network.
Based on the described IPv6 multi-protocol data of Fig. 5 gateway networking diagram, multi-protocol data gateway of the present invention is realized data communication basic process as shown in Figure 6, comprises the steps:
Step 601~602: when subscriber equipment (UE) inserted current mobile radio communication, the signaling processing module of corresponding current affiliated mobile radio communication was sent out the authentication request in described data gateway earlier, and by carrying out authentication in this signaling processing module;
Step 603~606: judge whether authentication passes through, if authentication is passed through, then this UE continues to set up data channel by the signaling processing module of mobile radio communication under current, and whether the judgment data passage sets up success, if passage is set up successfully, then carry out transfer of data, enter step 607, if passage is set up failure, then process ends; If authentication is not passed through, process ends then;
Step 607~608: whether real-time judge needs re-registers, if desired, then this UE by want new registration to the signaling processing module of mobile radio communication correspondence carry out authentication and data channel again and set up, return step 603; Otherwise, return step 606, proceed normal communication and detection in real time.
From above-mentioned steps as can be seen, four significant process when IPv6 multi-protocol data gateway of the present invention is realized data communication are exactly: authentication, data channel are set up, system is delivered and data transmission and processing, respectively each process is described in detail below, and, supposition subscriber equipment (UE) is below described for supporting the portable terminal of multimode.
Fig. 7 is the schematic flow sheet of authentication process, and as shown in Figure 7, the authentication process of UE mainly comprises:
The physical interface of step 701:UE by self linking to each other with IPv6 multi-protocol data gateway sent out the signaling processing module of register requirement to mobile communications network under the correspondence self in the IPv6 multi-protocol data gateway A ccess Server part.
Step 702: after described signaling processing module is received register requirement, obtain the authentication five-tuple (RAND, XRES, AUTN, CK and IK) of this UE from HLR.Wherein, the representative successively respectively of the parameter in the five-tuple: the random number that is used to authenticate, authentication signal response, authentication ring, computation key, Integrity Key.Then, described signaling processing module is issued UE with parameter A UTN in the authentication five-tuple and RAND.
Step 703~706:UE is according to signal response (RES) value of the calculation of parameter that is obtained self, and the RES value that calculates returned corresponding signaling processing module, whether the RES value of relatively being calculated by this signaling processing module is consistent with the XRES in the five-tuple, if it is consistent, authentication success then, otherwise failure.
With UE is that WCDMA or TD-SCDMA user are example, and the UE authentication in WCDMA or the TD-SCDMA net is to use in GPRS attaching process or RA renewal process, specifically comprises:
11) UE initiates GPRS and adheres to request to the WCDMA signaling processing module in the Access Server part earlier by the Iu interface, contains IMSI International Mobile Subscriber Identity (IMSI) information of this UE in the Attach Request message.
12) after the WCDMA signaling processing module receives that this adheres to solicited message, require to obtain the authentication five-tuple (RAND, XRES, AUTN, CK and IK) of this UE to HLR by the MAP of SS7 signaling network.
13) HLR returns to the authentication five-tuple of UE by the SS7 signaling network WCDMA signaling processing module of Access Server part;
14) after the WCDMA signaling processing module obtained the authentication five-tuple of UE, the WCDMA signaling processing module sent authentication request information to UE, has AUTN and RAND in this solicited message.
15) after UE receives this authentication request information, require SIM card check AUTN and the RAND wherein of self, if pass through, then calculate RES, and result of calculation is returned to the WCDMA signaling processing module.
16) the WCDMA signaling processing module compares the XRES of result of calculation and HLR/AUC generation, if coupling, then authentication success; Otherwise authentification failure, and authentication result returned to the WCDMA signaling processing module.
With UE is that CDMA 2000 users are example, and the UE authentication in the CDMA2000 net is to initiate when PCF finds not have the relevant A10 of UE to connect, and specifically comprises:
21) if PCF finds not have the A10 of UE to connect, then by CDMA 2000 signaling processing modules of A11 interface in Access Server part, send login request message with radius protocol, contain the IMSI information of UE SIM card and the information such as time of this connection in this request message.
22) after CDMA 2000 signaling processing modules are received this registration information, equally, require to obtain the authentication five-tuple (RAND, XRES, AUTN, CK and IK) of this UE to HLR by the MAP of SS7 signaling network.
23) HLR returns to Access Server partial C DMA2000 signaling processing module by the SS7 signaling network with the authentication five-tuple of UE;
24) after the CDMA2000 signaling processing module obtained the authentication five-tuple of UE, the CDMA2000 signaling processing module sent authentication request information to UE, has AUTN and RAND in this solicited message.
25) after UE receives this authentication request information, require SIM card check AUTN and the RAND of self, if pass through, then calculate RES, and result of calculation is returned to the CDMA2000 signaling processing module.
26) the CDMA2000 signaling processing module compares the XRES of result of calculation and HLR/AUC generation, if coupling, authentication success, otherwise fail, and authentication result is returned to the CDMA2000 signaling processing module.
For WLAN user is an example, the UE authentication in the WLAN net is when not having the rights of using registration of current UE on detecting AC, verification process to take place with UE.Specifically comprise:
31) do not have rights of using when registration of UE in detecting AC, UE sends to the IMSI information in self SIM card on the AC by access point (AP).
32) after AC receives the IMSI information of UE, IMSI and authentication request are sent in the WLAN signaling processing module of Access Server part with radius protocol.
33) after the WLAN signaling processing module is received the authentication information of UE, obtain the authentication five-tuple (RAND, XRES, AUTN, CK and IK) of this UE from HLR with the MAP signaling request by the SS7 signaling network.
34) HLR returns to the WLAN signaling processing module by the SS7 signaling network with the authentication five-tuple of UE.
35) after the WLAN signaling processing module obtains the authentication five-tuple of UE, initiate authentication request information to UE, have AUTN and RAND in this solicited message by AC, AP.
36) UE receives authentication request information, requires SIM card check AUTN and the RAND of self, if pass through, then calculates RES, and returns to Access Server part by AP, AC; After the WLAN signaling processing module is received RES, the XRES that this RES and HLR/AUC are generated relatively, if coupling, authentication success then, otherwise failure; Again authentication result is returned to the WLAN signaling processing module at last.
Behind the UE authentication success, the process of setting up data channel adopts following step respectively according to the mobile radio communication difference under the UE, wherein includes the gateway to charge information processing:
With UE is that WCDMA or TD-SCDMA user are example, in the WCDMA network, the data channel of UE establishes two processes: GPRS attaching process and packet data protocol (PDP) context activation process, this process is specifically finished by the WCDMA signaling processing module, adopts the data channel of the WCDMA network users of 3GPP standard code to set up process fully.The charge information of UE forms detailed call record (CDR in the common data processing module of Media Gateway part, Call Detail Record) information, regularly report Access Server part by strategy, or sending to it according to the requirement of Access Server part, concrete communication is finished in file transfer protocol (FTP) (FTP) mode by Access Server part and the Media Gateway Mp between partly.
With UE is that CDMA 2000 users are example, and in CDMA 2000 networks, it mainly is exactly the A10 establishment of connection that the data channel of UE is set up, and specifically comprises:
UE is the professional enrollment process of initiation packet at first, and UE sends initial message ORIGINATION to base station controller (BSC) on access channel; After BSC receives this message, confirm to UE; Simultaneously, BSC applies for authentication to MSC; After the MSC authentication was passed through, MSC sent message to BSC, and request distributes appropriate wireless resources to give UE; If PCF finds that the A10 of this UE connects, then by the A11 interface, the CDMA2000 signaling processing module in Access Server part sends login request message, wherein contains the IMSI information in the UE SIM card and the time of connection etc.; The CDMA2000 signaling processing module is checked the legitimacy of this request message; If be proved to be successful, Access Server partly notifies between PCF and the MediaGateway part and sets up the A10 connection.
Simultaneously, common data processing module in the Media Gateway part is set up the binding information that is connected with this A10, the CDR information that is formed for chargeing, and regularly circulate a notice of Access Server part by strategy, or sending to it according to the requirement of Access Server part, concrete communication is finished in the FTP mode by the Mp between Access Server part and the Media Gateway part.
For WLAN user is an example, the data channel among the WLAN is set up process and is comprised with UE:
UE at first initiates the IMSI authentication request based on self SIM card; After the WLAN signaling process gateway of Access Server part was accepted authentication success, notice AC and Media Gateway part can be accepted the next data of UE of WLAN, and concrete operations are exactly that the IP packet routing forwarding that will receive the port of UE data enables.
Simultaneously, the common data processing module of Media Gateway part is set up the binding information that is connected with this port, the CDR information that is formed for chargeing, and regularly circulate a notice of Access Server part by predetermined policy, or sending to it according to the requirement of Access Server part, concrete communication is finished in the FTP mode by the Mp between Access Server part and the Media Gateway part.
The UE authentication by and set up data channel after, can realize normal communication.When UE will be under current mobile communications network switch to another kind of target mobile communication when online, UE needs to register with data channel in the destinations traffic net again to set up process, after succeeding in registration, be released in system resource shared in the sources traffic net simultaneously.Described here will switching has two kinds of situations: the current zone of living in of a kind of UE of being discovery self becomes another kind of mobile radio communication from a kind of mobile communications network; Another kind is that UE initiatively requires to switch current affiliated mobile communications network.
According to switching the different of the current belonging network of UE and the objective network that will switch to, be divided into following several situation:
A) UE switches to CDMA 2000 systems from WCDMA.
A1. detect self when the WCDMA net enters CDMA 2000 net as UE, UE proposes authentication request to the IPv6 multi-protocol data gateway that connects CDMA 2000, contains the IMSI information of SIM card in this authentication request message.
A2. the common signaling processing module is finished authentication to UE by CDMA 2000 signaling processing modules.
A3. after authentication is passed through, the common signaling processing module by WCDMA signaling processing module notice UE be tuned to CDMA 2000 channels, notify RNC and base station (Node B) in the WCDMA net to discharge the shared related resource of UE simultaneously.
After the a4.UE channel tuner was finished, common signaling processing module notice CDMA 2000 signaling processing modules were finished the data channel of UE and are set up process.
A5. in the process of carrying out step a1~a4, the data that external packet data network (PDN) sends to UE can be stored in the public buffer area of common data processing module in the IPv6 multi-protocol data gateway, are partly carried out by common signaling processing module notice Media Gateway.After the CDMA2000 data processing channel was set up, the data that will be stored in public buffer area again were sent on the UE by new A10 connection.
B) UE switches to wlan system from WCDMA.
B1.UE detects self and enters WLAN when net from the WCDMA net, and UE proposes authentication request to the IPv6 multi-protocol data gateway that connects WLAN, contains the IMSI information of SIM card in this authentication request message.
B2. the common signaling processing module is finished authentication to UE by the WLAN signaling processing module.
B3. after authentication was passed through, the common signaling processing module tuned the antenna to the WLAN channel by WCDMA signaling processing module notice UE, notified RNC and Node B in the WCDMA net to discharge the shared related resource of UE simultaneously.
After the b4.UE channel tuner was finished, common signaling processing module notice WLAN signaling processing module was finished the process of setting up of data channel.
B5. in the process of carrying out step b1~b4, the data that outside PDN sends to UE can be stored in the public buffer area of common data processing module in the IPv6 multi-protocol gateway, are partly carried out by common signaling processing module notice Media Gateway.After the WLAN data processing channel was set up, the data that will be stored in public buffer area again were sent on the UE by corresponding AC and AP.
C) UE switches to the WCDMA system from CDMA2000.
D) UE switches to wlan system from CDMA2000.
E) UE switches to the WCDMA system from WLAN.
F) UE switches to the CDMA2000 system from WLAN.
Situation c is basic identical to the specific implementation process of situation d and situation a or b, switch preceding communication network by common signaling processing module notice and discharge respective resources, by the data of issuing UE in the interim bank switching process of public buffer area, it is different with the module of setting up data channel just to participate in carrying out authentication, all is to be realized by the signaling processing module of corresponding destinations traffic network.
Above-mentioned certain UE carries out authentication again and sets up data channel, and discharges original shared system resource; And carrying out authentication and setting up in the data channel process again, the data that this UE should receive are stored temporarily, after data channel was set up successfully, the process that retransfers to this UE promptly was referred to as to deliver process.In actual applications, deliver process and be not only applicable to handoff procedure between the different mobile communication net; And can be used for the process that routing update or PCF upgrade, the entity difference of carrying out in the present invention just.Wherein, the routing update process is followed the 3GPP standard, and PCF upgrades the 3GPP2 standard of following.
When UE carries out normal transfer of data, be with the UE transfer of data in multi-protocol data gateway MediaGateway part, by with UE current under the corresponding data processing module of mobile communications network, the UE uniform data is encapsulated as the IPv6 packet, be sent to IP kernel heart net, in IP kernel heart net, transmit.
In the WCDMA network, in Media Gateway part, the WCDMA data processing module of Media Gateway part takes out the data among the GTP-U to the UE data by the GTP-U tunnel transmission, is packaged into the IPv6 bag, puts into IP kernel heart net and transmits.
In the CDMA2000 network, the UE data are transferred in the Media Gateway part by gre tunneling, and Media Gateway partial C DMA2000 data processing module takes out the data among the GRE, are packaged into the IPv6 bag, put into IP kernel heart net and transmit.
In wlan network, according to the characteristics of WLAN net support IP operation, the data of UE promptly become the IPv6 packet by behind the AC, and so, the WLAN data processing module of Media Gateway part only need be transmitted the IP packet of receiving from AC and get final product.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.

Claims (9)

1, a kind of implementation method of multi-protocol data gateway communication, be applicable to the multi-protocol data gateway that connects more than one mobile radio communications simultaneously, described multi-protocol data gateway comprise have a common signaling processing module and more than one the signaling processing module of corresponding different agreement signaling access service part and have a common data processing module and the media gateway part of the data processing module of corresponding different agreement data more than; It is characterized in that this method may further comprise the steps:
When a. user equipment (UE) inserts current mobile radio communication,, send out the signaling processing module that the current affiliated mobile radio communication of correspondence self in the multi-protocol data gateway is given in the authentication request by the physical interface that self links to each other with the multi-protocol data gateway;
B. receive that the signaling processing module of authentication request obtains the authentication five-tuple of described UE from attaching position register, and the parameter in the authentication five-tuple is issued described UE;
C. described UE is according to the signal response value of the calculation of parameter that is obtained self, and the signal response value that calculates returned corresponding signaling processing module, whether the signal response value of relatively being calculated by this signaling processing module is consistent with the signal response value in the authentication five-tuple, if it is consistent, then authentication passes through, execution in step d; Otherwise the authentication failure, process ends;
D. described UE continues to set up data channel by the signaling processing module of mobile radio communication under current, and whether the judgment data passage set up success, if passage is set up successfully, then carry out transfer of data, enter step e, if passage is set up failure, then process ends;
E. whether real-time judge needs to re-register, if desired, then this UE by want new registration to the signaling processing module of mobile radio communication correspondence carry out authentication and data channel again and set up, return steps d; Otherwise, return step e.
2, method according to claim 1 is characterized in that, step e is described to be judged as: whether the type that detects the current affiliated mobile communications network of this UE in real time changes, if then need to re-register; Otherwise, do not need to re-register.
3, method according to claim 1 is characterized in that, step e is described to be judged as: judge whether to detect the current affiliated mobile radio communication request of switching that UE initiatively sends, if detect, then need to re-register; Otherwise, do not need to re-register.
4, method according to claim 1 is characterized in that, step e is described to be judged as: judge whether to detect the routing update of UE, if detect, then need to re-register; Otherwise, do not need to re-register.
5, according to claim 1,2,3 or 4 described methods, it is characterized in that described re-registering further comprises:
B1.UE wants the signaling processing module of the mobile radio communication correspondence that new registration arrives to send the authentication request in the multi-protocol data gateway, this signaling processing module carries out authentication to this UE, and judge whether authentication is passed through, if pass through, then that UE is current communication channel from former registration mobile radio communication channel tuner to new registration mobile communication network channel, simultaneously, discharge this UE shared whole system resources in former registration mobile radio communication, enter step b2; Otherwise, process ends;
B2. this UE is based upon the data channel in the new registration mobile radio communication by the signaling processing module of new registration mobile radio communication correspondence in the multi-protocol data gateway.
6, method according to claim 5, it is characterized in that, this method further comprises: UE carries out authentication and data channel when setting up in the new registration mobile radio communication, preserve the data that all send to this UE by the common data processing module in the multi-protocol data gateway, after this UE data channel is set up successfully, send the total data of being preserved to this UE by newly-built data channel again.
7, method according to claim 1 is characterized in that, described transfer of data further comprises: the data that UE will transmit are sent in the multi-protocol data gateway and the corresponding data processing module of mobile communications network under self is current; This data processing module is encapsulated as IPv6 protocol data bag with the uniform data of receiving; Be sent to IP kernel heart net, in IP kernel heart net, transmit.
8, method according to claim 1, it is characterized in that, the described data channel of setting up is: under UE is current in the mobile radio communication, set up the connection between the data processing module port of corresponding current affiliated mobile radio communication in this UE and the multi-protocol data gateway.
9, method according to claim 8, it is characterized in that, the described data channel of setting up further comprises: set up the binding relationship that is connected with port in the common data processing module of multi-protocol data gateway, and generate the detailed call recorded information that is used to charge.
CN 03127989 2003-04-28 2003-04-28 A multi-protocol data gateway and method for implementing communication thereof Expired - Fee Related CN1284338C (en)

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