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

Abstract

The invention discloses a method for realizing multi-protocol data gateway communication, which is suitable for multi-protocol data gateways connected to more than one mobile communication network at the same time. The method includes: a. The corresponding signaling processing module in the data gateway sends an authentication request, and performs authentication through the signaling processing module; b. judge whether the authentication is passed, if passed, continue to establish a data channel, and judge whether the data channel is established successfully , if successful, perform data transmission, enter step c, end if failed; end if not passed; c. judge whether re-registration is required, if necessary, UE passes the signaling processing corresponding to the mobile communication network to be newly registered The module performs authentication and data channel establishment again, and returns to step b; otherwise, returns to step c. By adopting the method, data communication among various mobile networks, seamless switching, and interconnection between the mobile network and other networks can be realized.

Description

A method for implementing multi-protocol data gateway communication

technical field

The invention relates to the gateway technology, in particular to a communication method based on the Internet protocol version 6 (IPv6) multi-protocol data gateway.

Background technique

Although the development of the second generation mobile communication system, such as Global System for Mobile Communication (GSM) and IS-95, has become increasingly mature, this system mainly provides voice services in the form of circuit switching, and can only provide a small amount of data services. With the rapid development of the Internet (Internet) in recent years, the packet switching technology based on the Internet Protocol (IP) has made great progress and will become the basis of the future network. At the same time, data services have also become a new growth point of mobile communications, and its broad development prospects make people believe that mobile networks will fully apply IP technology to realize data services.

At present, Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access 2000 (CDMA2000) and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems are the mainstream systems of the third generation (3G) mobile communications. For the three-generation mobile communication cooperation project group (3GPP) and 3GPP2, IP will serve as an important technical direction. In 3GPP, the standard of WCDMA gradually evolves from Release99 and Release4 to the full IP of Release5; the data service of CDMA2000 is also completely based on IP. Therefore, the core network of the future network will be a switching network composed of high-end routers for fast forwarding of IP packets, while the edge access layer of the network will be more Address allocation and routing, protocol conversion, service aggregation, user authentication and billing and other functions. Among them, Release99, Release4 and Release5 are the three versions of WCDMA at present.

In all kinds of network construction and inter-network communication, the gateway is a very critical and indispensable network device. Simply put, a gateway is a network connector used to connect two networks with the same or different architectures so that devices in the two networks can communicate with each other. There are three types of independent data gateway devices involved in various existing mobile communication systems:

1) Serving GPRS Support Node (SGSN) and Gateway GPRS Support Node (GGSN)

It is mainly used for the existing General Packet Radio Service (GPRS) and WCDMA. Among them, the GPRS system is actually a mobile communication system formed after the introduction of data services into the Global System for Mobile Communications (GSM) system, to realize communication with external packets. A data network, such as the interconnection of the Internet, provides data services. Figure 1 is a schematic diagram of the networking of the GPRS network, as shown in Figure 1, here, the role of the SGSN in the system packet domain is similar to the role of the Mobile Switching Center/Visitor Location Register (MSC/VLR) in the circuit domain, with a network interface Access control, route selection and forwarding, mobility management, session management, collection of charging information and other functions. As a data gateway and router, GGSN provides intercommunication between the mobile network and external packet switching networks, such as the Internet, routes and encapsulates data packets between packet domain users and external data networks, and collects billing information. In the figure, the dotted line indicates the signaling interface, and the solid line indicates the signaling and data transmission interface.

TD-SCDMA system can use the same data gateway equipment as WCDMA system.

2) Packet Data Serving Node (PDSN)

It is mainly used in the CDMA 2000 1x system. The CDMA2000 1X network is built on the basis of the second-generation mobile communication system IS-95 to provide data services. Figure 2 is a schematic diagram of the PDSN network, as shown in Figure 2, here, the role of the PDSN is similar to the GGSN in WCDMA, and it undertakes the functions of a data gateway and a router between the mobile communication network and the external packet data network. authenticate users, provide data service access services for mobile users, and collect billing information.

3) Access controller (AC)

It is mainly used in the wireless local area network (WLAN) system. The basic structure of the WLAN system is composed of the access point (AP) and the access controller (AC). The user realizes the access service of mobile data. Here, the AP is a small wireless base station device of the WLAN network, which completes the wireless access function. The AP is also a network bridge, which is used to connect the wired network and the WLAN. Any WLAN terminal device can access external network resources through the corresponding AP. . AC acts as a gateway between the Internet and WLAN. Its functions include data packet encapsulation, routing, and forwarding to realize IP services; support SIM card-based and Web-based user authentication to realize access control; collect billing information. The AC is a router that supports multiple routing protocols and many network management functions, and can be connected to the AS directly or through the RADIUS network.

In order to provide users with better services and improve the call rate and reliability of mobile communications, the concept of network convergence is proposed. The so-called integration refers to supporting the interconnection of two networks of different protocol standards or covering the same area at the same time, and supporting mobile terminals with dual modes to switch and roam between the two networks. Currently, there are two main types of network integration: GPRS or WCDMA and WLAN integration, and GSM and CDMA2000 1X integration.

For the integration of GPRS and WLAN, operators deploy WLANs using 802.11b technology in many hot spots where GPRS networks already exist, or deploy WLANs using 802.11b technology in hot spots or special areas not covered by GPRS networks. In this case, the GPRS mobile network can provide medium and low-speed mobile data access, and WLAN can provide users with high-speed wireless data access. Then, dual-mode users can enjoy two access modes of high-speed and medium-low speed, and, The network supports switching and roaming of dual-mode users between networks. The dual-mode user mentioned here refers to a user using a mobile terminal supporting a dual-mode access mode. Generally, when a dual-mode user needs to switch between GPRS and WLAN, the user needs to interrupt the current connection, register with the destination network again, and communicate after successful registration.

For the integration of GSM and CDMA2000 1x, a GSM 1X system is proposed, so that GSM users can use the original GSM services and CDMA2000 1X data services in the CDMA2000 1X network at the same time. In this case, GSM users use GSM+CDMA2000 1X dual-mode mobile phones to seamlessly switch between GSM network and GSM1x network, and use the same circuit domain services and CDMA2000 1x data services in the CDMA2000 1x network as in the original GSM network .

In terms of network implementation, the specific method is: change the MSC of the mobile network part of CDMA2000 1x to a mobile switching point (MSN), and the service network completely uses GSM related equipment. The function of MSN is to map the signaling in the CDMA2000 1x radio access network (RAN) into the mobile application part (MAP) protocol and interact with the home location register (HLR) and short message center (SMSC) of the GSM network. The packet service of GSM 1x still adopts the process of CDMA2000 1x packet service.

It can be seen from the above analysis that GSM 1x only considers the integration of circuit domain services of GSM and CDMA2000 1x, but does not consider the integration of packet data services. Dual-mode mobile phone users can use the same circuits as those in the GSM system in the CDMA2000 1x network. domain, that is, the voice domain business, but it can only use the data service provided by the PDSN in the CDMA2000 1x network, which has certain limitations. The current situation of GPRS and WLAN integration is that when a dual-mode user moves from a GPRS coverage area to a WLAN coverage area, he needs to log in again, which cannot guarantee service continuity when a dual-mode user moves between the two networks.

More importantly, different wireless communication systems often use different architectures and devices to implement the function of data gateways. If operators operate networks of multiple standards at the same time, it will bring about redundant construction of authentication, billing, and background operation support systems. , resulting in a serious waste of resources. For users, it will be difficult for multi-mode users to roam freely and seamlessly switch between different network systems. Moreover, the existing unified access method only provides limited integration, does not have universality, and is not conducive to network upgrading.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a communication method of a multi-protocol data gateway, which can realize data communication and seamless switching between various mobile communication networks.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

The invention provides a method for realizing multi-protocol data gateway communication, which is suitable for multi-protocol data gateways connected to more than one mobile communication network at the same time. The multi-protocol data gateway includes a public signaling processing module and more than one corresponding different The access service part of the signaling processing module of the protocol signaling, and the media gateway part having a public data processing module and more than one data processing module corresponding to different protocol data; the method includes the following steps:

a. When the user equipment (UE) accesses the current mobile communication network, it sends an authentication request to the signaling processing of the mobile communication network corresponding to itself in the multi-protocol data gateway through the physical interface connected to the multi-protocol data gateway itself module;

b. The signaling processing module receiving the authentication authentication request obtains the authentication quintuple of the UE from the home location register, and sends the parameters in the authentication quintuple to the UE;

c. The UE calculates its own signal response value according to the obtained parameters, and returns the calculated signal response value to the corresponding signaling processing module, and the signaling processing module compares the calculated signal response value with the authentication five-element Whether the signal response values in the group are consistent, if they are consistent, then the authentication is passed, and step d is executed; otherwise, the authentication fails, and this process ends;

d. The UE continues to establish a data channel through the signaling processing module of the current mobile communication network, and judges whether the data channel is established successfully. If the channel is successfully established, then perform data transmission and enter step e. If the channel fails to be established, then end this process;

e. judge in real time whether re-registration is required, if necessary, then the UE re-authenticates and establishes a data channel through the signaling processing module corresponding to the mobile communication network to be newly registered, and returns to step d; otherwise, returns to step e.

The judgment in step e is: detecting in real time whether the type of the mobile communication network to which the UE currently belongs changes, and if so, re-registration is required; otherwise, re-registration is not required. Or: judging whether a request sent by the UE to switch the current mobile communication network is detected, and if detected, re-registration is required; otherwise, re-registration is not required. Or: judging whether a routing update of the UE is detected, if detected, re-registration is required; otherwise, re-registration is not required.

Re-enrollment as described in the above process further includes:

b1. The UE sends an authentication authentication request to the signaling processing module corresponding to the mobile communication network to be newly registered in the multi-protocol data gateway. The signaling processing module authenticates the UE and judges whether the authentication is passed. If passed , then tune the UE’s current communication channel from the original registered mobile communication network channel to the newly registered mobile communication network channel, and at the same time, release all the system resources occupied by the UE in the original registered mobile communication network, and enter step b2; otherwise, end this process;

b2. The UE establishes a data channel in the newly registered mobile communication network through the signaling processing module corresponding to the newly registered mobile communication network in the multi-protocol data gateway.

The method further includes: when the UE performs authentication and data channel establishment in the newly registered mobile communication network, the public data processing module in the multi-protocol data gateway saves all data sent to the UE, and the UE data channel is established successfully Afterwards, all the stored data are transmitted to the UE through the newly created data channel.

The data transmission further includes: the UE sends the data to be transmitted to the data processing module corresponding to the mobile communication network to which it currently belongs in the multi-protocol data gateway; the data processing module uniformly encapsulates the received data into an IPv6 protocol packet; sends To the IP core network, and transmit in the IP core network.

The establishment of the data channel is: in the mobile communication network to which the UE currently belongs, establishing a connection between the UE and a data processing module port of the multi-protocol data gateway corresponding to the mobile communication network to which it currently belongs. The establishment of the data channel further includes: establishing a binding relationship with the port connection in the public data processing module of the multi-protocol data gateway, and generating detailed call record information for billing.

Therefore, the multi-protocol data gateway and its communication implementation method provided by the present invention have the following advantages and characteristics:

1) The present invention compares with the fusion technology of existing mobile network, IPv6 multi-protocol data gateway mainly solves in packet domain to various wireless access technologies, as: all fusions of WCDMA, TD-SCDMA, CDMA2000 and WLAN. Various wireless access systems can share the resources of WCDMA service network, such as: home location register (HLR), short message mobile switching center (SMSC) and other network service resources, and provide unified authentication, authentication and billing, greatly Simplifies the operator's operation support system.

2) The IPv6 multi-protocol data gateway of the present invention adopts a softswitch architecture in which control and transmission are separated, which is in line with the development direction of the next generation network. The separated architecture enables great flexibility in device deployment. According to the actual situation, the media gateway part can be deployed in a centralized manner or distributed in different areas for different applications. In this way, the control part can be placed in the server to make the processing more flexible, and the forwarding function can be directly realized by the hardware to improve the processing speed. Therefore, the present invention can give full play to the processing capability of the server and the high-speed data forwarding of the data platform hardware ability, so that the system has good scalability.

3) The user can enjoy the packet services of multiple wireless access systems with a mobile terminal that supports multi-mode access, and supports the user to roam between multiple wireless access technologies, while ensuring the security of packet services during the roaming process. continuity.

4) Since the present invention realizes switching between different networks, the public data processing module in the multi-protocol data gateway receives and stores all the data that the user currently switching should receive, and transmits it to the user after the switching is completed, so that It realizes the seamless switching between WCDMA and TD-SCDMA, CDMA 20001x, and WLAN systems.

5) The present invention adopts the public signaling processing module and the public data processing module to complete the authentication process and the collection and processing of billing data in a unified manner, which ensures the realization of unified billing and unified authentication.

6) The IPv6 multi-protocol data gateway of the present invention adopts a high-performance hardware architecture and an open software design, has powerful data forwarding capabilities and computing processing capabilities, can provide various levels of service quality (QoS), and has good scalability, High reliability and high availability.

7) The data gateway of the present invention supports multiple functions, such as: high-speed data packet forwarding, protocol conversion from IPv4 to IPv6, conversion from other protocols to IPv6, support for multiple wireless access modes, mobility management and session management , Interconnect with service centers such as intelligent network and short message, provide different levels of QoS, authentication, authentication, collection of billing information, data interception, etc.

8) the data gateway of the present invention supports multiple protocols, such as: IPv6, IPv4, the Iu-ps interface protocol between WCDMA and TD-SCDMA, point-to-point protocol (PPP), MAP, transaction processing capability application part (TCAP) Signaling No.7, MTP3 User Adaptive Layer (M3UA), Stream Control Transmission Protocol (SCTP) and other SigTran protocols, Routing Information Protocol (RIP), Open Shortest Path First (OSPF) and other routing protocols, Simple Network Management Protocol ( SNMP), TELENET, File Transfer Protocol (FTP), Hypertext Transfer Protocol (HTTP), Common Object Request Broker Architecture (CORBA) and other protocols related to network management, RADIUS protocol, etc.

9) The data gateway of the present invention provides multiple physical interfaces: Ethernet interface, Asynchronous Transfer Mode (ATM) interface and E1 interface.

Description of drawings

Fig. 1 is the networking diagram of GPRS;

FIG. 2 is a schematic diagram of a PDSN network;

Fig. 3 is a schematic diagram of the basic composition structure of the data gateway of the present invention;

Fig. 4 is a schematic diagram of the interface and connection relationship of the data gateway in the actual networking of the present invention;

Fig. 5 is a schematic diagram of networking based on the IPv6 multi-protocol data gateway of the present invention;

Fig. 6 is the basic flow chart that IPv6 multi-protocol data gateway of the present invention realizes data communication;

FIG. 7 is a schematic flow chart of the authentication process.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

The data gateway proposed by the present invention receives signaling and data from various mobile communication networks, and after unified processing, outputs data based on the IPv6 protocol or completes authentication with the MAP protocol, so it is called multi-protocol data based on IPv6 gateway. Fig. 3 is the basic composition structure schematic diagram of data gateway of the present invention, referring to shown in Fig. 3, the multi-protocol data gateway based on IPv6 of the present invention mainly is made up of two major parts: access service (Access Server) part and media gateway (Media Gateway) Among them, the access service part is used to process and manage the signaling input from various mobile communication systems and transfer signaling and data, and the media gateway part is used to process and manage the data input from various mobile communication systems . The access service part and the media gateway part are interconnected through the bottom layer Ethernet interface for transmitting signaling or data information.

Among them, the access service part further includes: the WCDMA/TD-SCDMA signaling processing module, the CDMA2000 signaling processing module and the WLAN signaling processing module respectively processing the input signaling of different mobile communication systems, and the public management of signaling Common signaling processing module. Different types of mobile communication networks are connected with their corresponding signaling processing modules, for example: WCDMA/TD-SCDMA signaling processing module is used to connect to WCDMA or TD-SCDMA network; CDMA2000 signaling processing module is used to connect to CDMA2000 network; WLAN signaling processing module The processing module is used to connect to the WLAN network, and the protocols used in different types of mobile networks are terminated here through the protocol termination function in each module, so as to complete subsequent operations, such as: uniformly convert the protocols used in different mobile networks into MAP protocol, and then use the MAP protocol to complete the authentication in the HLR; or implement other mobility management processes.

Specifically, the WCDMA/TD-SCDMA signaling processing module is mainly responsible for: session management; mobility management for routing (RA) updates for WCDMA/TD-SCDMA; GTP-C termination and wireless Access Network Application Protocol (RANAP) protocol termination; Mobile Network Enhanced Logic for Intelligent Network Custom Application Part (CAP) protocol termination. The CDMA2000 signaling processing module is mainly responsible for: the termination of the A11 interface protocol; processing the switching between PCFs; the termination of the RADUIS authentication of CDMA2000, and the transfer to the HLR for authentication using the MAP protocol, that is, the completion of the unified authentication function. The WLAN signaling processing module is mainly responsible for: terminating the RADUIS authentication of the WLAN, and switching to the authentication in the HLR using the MAP protocol, that is, completing the unified authentication function. The public signaling processing module is mainly responsible for: billing information processing; media gateway management; termination of MAP protocol between HLR and gateway; WCDMA/TD-SCDMA access network, CDMA2000 access network and WLAN handover, here The so-called handover function refers to signaling and data transmission between two networks in order to ensure seamless switching between different networks.

The media gateway part further includes: WCDMA/TD-SCDMA data processing module, CDMA2000 data processing module and WLAN data processing module for processing input data of different mobile communication systems respectively, and public data processing module for public management of data. Similarly, different types of mobile communication networks are connected to their corresponding data processing modules, for example: WCDMA/TD-SCDMA data processing modules are used to connect to WCDMA or TD-SCDMA networks; CDMA2000 data processing modules are used to connect to CDMA2000 networks; WLAN data processing modules The module is used to connect to the WLAN network, and the data received from each protocol interface is uniformly encapsulated into IPv6 data packets through the termination and encapsulation functions in each module.

Specifically, the WCDMA/TD-SCDMA data processing module is mainly responsible for terminating the GTP-U protocol of the Iu-PS interface, encapsulating IP packets and supporting the release process of the Iu interface. The CDMA2000 data processing module is mainly responsible for terminating the Generic Routing Encapsulation (GRE) tunnel of the A10 interface of the CDMA2000 network and encapsulating IPv6 data packets. The WLAN data processing module is mainly responsible for forwarding IP data packets related to the AC in the WLAN, including data flowing out from the AC and data entering the AC. The public data processing module is mainly responsible for: providing quality of service (QoS) guarantee mechanism, collection of billing and other data, monitoring of communication data content, sending billing data to Access Server at regular intervals or as needed, routing function, realizing dynamic host configuration protocol function, It can resolve domain name for clients, convert IPv4 to IPv6 protocol, and can choose to realize the function of foreign agent (FA) when using MobileIP. The conversion between IPv4 and IPv6 described here is due to: the IP version adopted by the part data of the access network is different from the IP version adopted by the external PDN network, and the public data processing module in the multi-protocol data gateway of the present invention supports two kinds of IP Two-way mutual conversion of versions, the specific method is to adopt a dual-protocol stack method.

Fig. 4 is a schematic diagram of the interface and connection relationship of the data gateway of the present invention in the actual networking, as shown in Figure 4, in the actual networking, the packet control function equipment (PCF) of the CDMA2000 network passes through the Ethernet interface, such as the A11 interface and The Access Server part is connected; the radio network controller (RNC) of WCDMA and TD-SCDMA system is connected with the Access Server part through the ATM interface, such as the Iu-PS interface; the AC of the WLAN is connected to the Access Server part through the Ethernet interface; the Access Server part Through the E1 interface and the No. 7 signaling network (SS7). The interconnection of the above-mentioned devices and modules is used for signaling processing.

Referring again to shown in Fig. 4, the PCF of CDMA2000 network links to each other with Media Gateway part as A10 interface by Ethernet interface; The RNC of WCDMA and TD-ACDMA system links to each other with Media Gateway part as Iu-PS interface by ATM interface; The AC is connected to the Media Gateway part through the Ethernet interface; the gateway of the multimedia short message (MMS) is connected to the Media Gateway part through the Ethernet interface. At the same time, the Mp interface is used to connect the Media Gateway part and the Access Server part; the Media Gateway part is directly connected to the IP core switching network.

Based on the above composition structure, connection relationship and supported functions, the basic process of utilizing the IPv6 multi-protocol data gateway of the present invention to realize data communication is as follows: The data gateway sends an authentication authentication request, and performs authentication and registration in the signaling processing module corresponding to the mobile communication network to which it currently belongs. For example, if user A currently belongs to the WCDMA network, user A sends an authentication authentication request to the Access Server part of the data gateway. WCDMA signaling processing module. If the authentication is passed, user A continues to establish a data channel through the WCDMA signaling processing module, and starts a normal data transmission process.

When user A wants to switch to another mobile communication network of a different type, the user A needs to send an authentication request to the signaling processing module corresponding to the switching target mobile communication network, for example: user A wants to switch from a WCDMA network to CDMA 2000, then user A should send an authentication request to the CDMA 2000 signaling processing module in the Access Server part of the data gateway at this time. If the authentication is passed, the public signaling processing module in the AccessServer part will notify the WCDMA signaling processing module to release relevant resources, and user A establishes a data channel through the CDMA 2000 signaling processing module to start normal data transmission.

From the application of the multi-protocol data gateway in the data communication process, it can be seen that the core function of the IPv6 multi-protocol data gateway is to provide data services for WCDMA/TD-SCDMA, CDMA2000 and WLAN users, so that they can access the external IP packet data network (such as the Internet). To this end, the IPv6 multi-protocol data gateway involves several important processes: user authentication, data channel establishment, system handover and data transmission processing. Here, the system handover refers to keeping the service uninterrupted when the user switches between WCDMA/TD-SCDMA, CDMA2000 and WLAN. The above access modes use the same access, authentication, and billing equipment and methods, and the user equipment can perform roaming communication in various access networks by using a mobile terminal that supports multiple access modes.

Figure 5 is a schematic diagram of networking based on the IPv6 multi-protocol data gateway of the present invention. As shown in Figure 5, the data gateway of the present invention is at the core of the entire network, and is connected to various mobile communication networks through different protocols and interfaces respectively, supporting Interworking of various mobile communication networks.

Based on the networking diagram of the IPv6 multi-protocol data gateway described in Figure 5, the basic process of realizing data communication by the multi-protocol data gateway of the present invention is shown in Figure 6, including the following steps:

Steps 601-602: When the user equipment (UE) accesses the current mobile communication network, it first sends an authentication request to the signaling processing module of the data gateway corresponding to the current mobile communication network, and passes the signaling processing module Authentication in the authentication;

Steps 603-606: Determine whether the authentication is passed. If the authentication is passed, the UE continues to establish a data channel through the signaling processing module of the mobile communication network to which it belongs, and determines whether the data channel is successfully established. If the channel is successfully established, then Perform data transmission, enter step 607, if the channel establishment fails, then end this process; if the authentication fails, then end this process;

Steps 607-608: judge in real time whether re-registration is required, if necessary, the UE re-authenticates and establishes a data channel through the signaling processing module corresponding to the mobile communication network to be newly registered, and returns to step 603; otherwise, returns Step 606, continue normal communication and detect in real time.

As can be seen from the above steps, four important processes when the IPv6 multi-protocol data gateway of the present invention realizes data communication are exactly: authentication authentication, data channel establishment, system handover and data transmission processing, each process is carried out in detail below respectively description, and the following description assumes that the user equipment (UE) is a mobile terminal supporting multi-mode.

Figure 7 is a schematic flow chart of the authentication process. As shown in Figure 7, the authentication process of the UE mainly includes:

Step 701: The UE sends a registration request to the signaling processing module corresponding to the mobile communication network to which it belongs in the Access Server part of the IPv6 multi-protocol data gateway through its own physical interface connected to the IPv6 multi-protocol data gateway.

Step 702: After receiving the registration request, the signaling processing module obtains the UE's authentication quintuple (RAND, XRES, AUTN, CK and IK) from the HLR. Among them, the parameters in the five-tuple respectively represent: random number used for authentication, authentication signal response, authentication ring, calculation key, and integrity key. Then, the signaling processing module sends the parameters AUTN and RAND in the authentication quintuple to the UE.

Steps 703-706: UE calculates its own signal response (RES) value according to the obtained parameters, and returns the calculated RES value to the corresponding signaling processing module, and the signaling processing module compares the calculated RES value with the five-element Whether the XRES in the group is consistent, if consistent, the authentication is successful, otherwise it fails.

Taking UE as a WCDMA or TD-SCDMA user as an example, UE authentication in a WCDMA or TD-SCDMA network is used during the GPRS attach process or RA update process, including:

11) The UE first initiates a GPRS attach request to the WCDMA signaling processing module in the Access Server part through the Iu interface, and the attach request message contains the UE's International Mobile Subscriber Identity (IMSI) information.

12) After the WCDMA signaling processing module receives the attach request information, it requests the HLR to obtain the authentication quintuple (RAND, XRES, AUTN, CK and IK) of the UE through the MAP protocol of the SS7 signaling network.

13) The HLR returns the authentication quintuple of the UE to the WCDMA signaling processing module of the Access Server part through the SS7 signaling network;

14) After the WCDMA signaling processing module obtains the authentication quintuple of the UE, the WCDMA signaling processing module sends authentication request information to the UE, and the request information includes AUTN and RAND.

15) After receiving the authentication request information, the UE requires its own SIM card to check the AUTN and RAND in it, and if it passes, calculates the RES, and returns the calculation result to the WCDMA signaling processing module.

16) The WCDMA signaling processing module compares the calculation result with the XRES generated by the HLR/AUC, and if they match, the authentication is successful; otherwise, the authentication fails, and the authentication result is returned to the WCDMA signaling processing module.

Taking the UE as a CDMA2000 user as an example, the UE authentication in the CDMA2000 network is initiated when the PCF finds that there is no UE-related A10 connection, including:

21) If the PCF finds that there is no A10 connection of the UE, it sends a registration request message using the RADIUS protocol to the CDMA 2000 signaling processing module in the Access Server part through the A11 interface. The request message contains the IMSI information of the UE SIM card and the connection time and other information.

22) After the CDMA 2000 signaling processing module receives the registration request information, it also requests the HLR to obtain the authentication quintuple (RAND, XRES, AUTN, CK and IK) of the UE through the MAP protocol of the SS7 signaling network.

23) The HLR returns the authentication quintuple of the UE to the CDMA2000 signaling processing module of the Access Server part through the SS7 signaling network;

24) After the CDMA2000 signaling processing module obtains the UE's authentication quintuple, the CDMA2000 signaling processing module sends authentication request information to the UE, and the request information includes AUTN and RAND.

25) After receiving the authentication request information, UE requires its own SIM card to check AUTN and RAND, and if it passes, calculates RES, and returns the calculation result to the CDMA2000 signaling processing module.

26) The CDMA2000 signaling processing module compares the calculation result with the XRES generated by the HLR/AUC, if they match, the authentication is successful, otherwise it fails, and returns the authentication result to the CDMA2000 signaling processing module.

Taking the UE as a WLAN user as an example, the UE authentication in the WLAN network occurs when it is detected that there is no current UE registration on the AC. Specifically include:

31) When detecting that there is no registration of the UE's usage rights in the AC, the UE sends the IMSI information in its own SIM card to the AC through the access point (AP).

32) After receiving the IMSI information of the UE, the AC sends the IMSI and the authentication request to the WLAN signaling processing module of the Access Server through the RADIUS protocol.

33) After the WLAN signaling processing module receives the identity verification information of the UE, it requests to obtain the authentication quintuple (RAND, XRES, AUTN, CK and IK) of the UE from the HLR through the SS7 signaling network using MAP signaling.

34) The HLR returns the UE's authentication quintuple to the WLAN signaling processing module through the SS7 signaling network.

35) After the WLAN signaling processing module obtains the UE's authentication quintuple, it sends an authentication request message to the UE through AC and AP, and the request message includes AUTN and RAND.

36) The UE receives the authentication request information and requires its own SIM card to check AUTN and RAND. If it passes, it calculates the RES and returns it to the Access Server part through the AP and AC; after the WLAN signaling processing module receives the RES, it sends The RES is compared with the XRES generated by the HLR/AUC, and if they match, the authentication is successful; otherwise, it fails; finally, the authentication result is returned to the WLAN signaling processing module.

After the UE is successfully authenticated, the process of establishing a data channel depends on the mobile communication network to which the UE belongs. The following steps are used, including the processing of billing information:

Taking UE as a WCDMA or TD-SCDMA user as an example, in a WCDMA network, there are two processes for establishing a UE data channel: the GPRS attach process and the packet data protocol (PDP) context activation process, which are specifically determined by the WCDMA signaling processing module Completed, fully adopt the data channel establishment process of the WCDMA network user stipulated in the 3GPP standard. The billing information of the UE forms call detail record (CDR, Call Detail Record) information in the public data processing module of the Media Gateway part, which is regularly reported to the Access Server part according to the policy, or sent to it according to the requirements of the Access Server part. The specific communication Through the Mp interface between the Access Server part and the Media Gateway part, it is completed in a file transfer protocol (FTP) manner.

Taking UE as a CDMA 2000 user as an example, in a CDMA 2000 network, the establishment of a UE data channel is mainly the establishment of an A10 connection, including:

The UE first initiates the packet service registration process, and the UE sends an initialization message ORIGINATION to the base station controller (BSC) on the access channel; after receiving the message, the BSC confirms to the UE; at the same time, the BSC applies for authentication to the MSC; the MSC passes the authentication Finally, the MSC sends a message to the BSC, requesting to allocate suitable radio resources to the UE; if the PCF finds that there is no A10 connection of the UE, it sends a registration request message to the CDMA2000 signaling processing module in the Access Server part through the A11 interface, which contains The IMSI information in the UE SIM card and the connection time, etc.; the CDMA2000 signaling processing module checks the legitimacy of the request message; if the verification is successful, the Access Server part notifies the PCF and the MediaGateway part to establish an A10 connection.

At the same time, the public data processing module in the Media Gateway part establishes the binding information connected with the A10, forms the CDR information for billing, and regularly notifies the Access Server part according to the policy, or sends it to it according to the requirements of the Access Server part, The specific communication is completed by FTP through the Mp interface between the Access Server part and the Media Gateway part.

Taking UE as a WLAN user as an example, the data channel establishment process in WLAN includes:

The UE first initiates an IMSI authentication request based on its own SIM card; after the WLAN signaling processing gateway of the Access Server part accepts the authentication successfully, it notifies the AC and the Media Gateway part that it can accept the data from the UE of the WLAN. IP packet routing and forwarding is enabled.

At the same time, the public data processing module of the Media Gateway part establishes the binding information connected with the port, forms the CDR information for billing, and regularly notifies the Access Server part according to the predetermined strategy, or sends it to it according to the requirements of the Access Server part, The specific communication is completed by FTP through the Mp interface between the Access Server part and the Media Gateway part.

Normal communication can be realized after UE authentication is passed and a data channel is established. When the UE wants to switch from the current mobile communication network to another target mobile communication network, the UE needs to re-register in the target communication network and establish a data channel. System resources used. There are two cases of handover described here: one is that the UE finds that its current area has changed from one mobile communication network to another; the other is that the UE actively requests to switch the current mobile communication network .

According to the difference between the network to which the UE currently belongs and the target network to which the UE is to be handed over, there are several situations as follows:

a) UE switches from WCDMA to CDMA 2000 system.

a1. When the UE detects that it has entered the CDMA 2000 network from the WCDMA network, the UE sends an authentication request to the IPv6 multi-protocol data gateway connected to the CDMA 2000, and the authentication request message contains the IMSI information of the SIM card.

a2. The public signaling processing module completes the UE authentication through the CDMA 2000 signaling processing module.

a3. After the authentication is passed, the public signaling processing module notifies the UE to tune to the CDMA 2000 channel through the WCDMA signaling processing module, and at the same time notifies the RNC and the base station (Node B) in the WCDMA network to release the relevant resources occupied by the UE.

a4. After the UE channel tuning is completed, the common signaling processing module notifies the CDMA 2000 signaling processing module to complete the UE data channel establishment process.

a5. In the process of performing steps a1-a4, the data sent by the external packet data network (PDN) to the UE will be stored in the public buffer area of the public data processing module in the IPv6 multi-protocol data gateway, and will be notified by the public signaling processing module Partially implemented by Media Gateway. After the CDMA2000 data processing channel is established, the data stored in the public buffer area is transmitted to the UE through a new A10 connection.

b) UE switches from WCDMA to WLAN system.

b1. When the UE detects that it has entered the WLAN network from the WCDMA network, the UE sends an authentication request to the IPv6 multi-protocol data gateway connected to the WLAN, and the authentication request message contains the IMSI information of the SIM card.

b2. The public signaling processing module completes the authentication of the UE through the WLAN signaling processing module.

b3. After the authentication is passed, the public signaling processing module notifies the UE to tune the antenna to the WLAN channel through the WCDMA signaling processing module, and at the same time notifies the RNC and Node B in the WCDMA network to release the relevant resources occupied by the UE.

b4. After the UE channel tuning is completed, the common signaling processing module notifies the WLAN signaling processing module to complete the establishment process of the data channel.

b5. During the process of steps b1-b4, the data sent by the external PDN to the UE will be stored in the public buffer area of the public data processing module in the IPv6 multi-protocol gateway, and the public signaling processing module will notify the Media Gateway to execute partly. After the WLAN data processing channel is established, the data stored in the public buffer area is transmitted to the UE through the corresponding AC and AP.

c) UE switches from CDMA2000 to WCDMA system.

d) UE switches from CDMA2000 to WLAN system.

e) UE switches from WLAN to WCDMA system.

f) UE switches from WLAN to CDMA2000 system.

The specific implementation process from case c to case d is basically the same as case a or b. The public signaling processing module notifies the communication network before the handover to release the corresponding resources, and the public buffer temporarily stores the data sent to the UE during the handover process. The modules for performing authentication and establishing data channels are different, and both are implemented by the signaling processing module corresponding to the target communication network.

One of the above-mentioned UEs re-authenticates and establishes a data channel, and releases the system resources originally occupied; and during the process of re-authentication and authentication and establishing a data channel, temporarily stores the data that the UE should receive and puts it in the data channel After the establishment is successful, the process of retransmitting to the UE is called the handover process. In practical applications, the handover process is not only applicable to the handover process between different mobile communication networks; it can also be used in the process of routing update or PCF update, but the entities executed in the present invention are different. Wherein, the routing update process follows the 3GPP standard, and the PCF update follows the 3GPP2 standard.

When the UE performs normal data transmission, the UE data is transmitted to the MediaGateway part of the multi-protocol data gateway, and the data processing module corresponding to the mobile communication network to which the UE currently belongs will uniformly encapsulate the UE data into an IPv6 data packet and send it to the IP core network, which is transmitted in the IP core network.

In the WCDMA network, the UE data is transmitted to the Media Gateway part through the GTP-U tunnel, and the WCDMA data processing module of the Media Gateway part takes out the data in the GTP-U, encapsulates it into an IPv6 packet, and puts it into the IP core network for transmission.

In the CDMA2000 network, the UE data is transmitted to the Media Gateway through the GRE tunnel, and the CDMA2000 data processing module of the Media Gateway takes out the data in the GRE, encapsulates it into an IPv6 packet, and puts it into the IP core network for transmission.

In the WLAN network, according to the characteristics of the WLAN network supporting IP services, after the data of the UE passes through the AC, it becomes an IPv6 data packet. Then, the WLAN data processing module of the Media Gateway only needs to forward the IP data packet received from the AC. .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (9)

1. A method for realizing multi-protocol data gateway communication, suitable for multi-protocol data gateways connected to more than one mobile communication network at the same time, said multi-protocol data gateway includes a common signaling processing module and more than one corresponding different protocol signaling The access service part of the signaling processing module of the order, and the media gateway part with a public data processing module and more than one data processing modules corresponding to different protocol data; it is characterized in that the method comprises the following steps: a. When the user equipment UE accesses the current mobile communication network, it sends an authentication request to the signaling processing module in the multi-protocol data gateway corresponding to the mobile communication network to which it currently belongs through its physical interface connected to the multi-protocol data gateway; b. The signaling processing module receiving the authentication authentication request obtains the authentication quintuple of the UE from the home location register, and sends the parameters in the authentication quintuple to the UE; c. The UE calculates its own signal response value according to the obtained parameters, and returns the calculated signal response value to the corresponding signaling processing module, and the signaling processing module compares the calculated signal response value with the authentication five-element Whether the signal response values in the group are consistent, if they are consistent, then the authentication is passed, and step d is executed; otherwise, the authentication fails, and this process ends; d. The UE continues to establish a data channel through the signaling processing module of the current mobile communication network, and judges whether the data channel is established successfully. If the channel is successfully established, then perform data transmission and enter step e. If the channel fails to be established, then end this process; e. judge in real time whether re-registration is required, if necessary, then the UE re-authenticates and establishes a data channel through the signaling processing module corresponding to the mobile communication network to be newly registered, and returns to step d; otherwise, returns to step e. 2. The method according to claim 1, wherein the judgment in step e is: detecting in real time whether the type of the mobile communication network to which the UE currently belongs has changed, and if so, re-registration is required; otherwise, no register again. 3. The method according to claim 1, wherein the judging in step e is: judging whether a request to switch the current mobile communication network sent by the UE is detected, and if detected, re-registration is required; otherwise, No need to re-register. 4. The method according to claim 1, wherein the judgment in step e is: judging whether a routing update of the UE is detected, if detected, re-registration is required; otherwise, re-registration is not required. 5. The method according to claim 1, 2, 3 or 4, wherein said re-registration further comprises: b1. The UE sends an authentication authentication request to the signaling processing module corresponding to the mobile communication network to be newly registered in the multi-protocol data gateway. The signaling processing module authenticates the UE and judges whether the authentication is passed. If passed , then tune the UE’s current communication channel from the original registered mobile communication network channel to the newly registered mobile communication network channel, and at the same time, release all the system resources occupied by the UE in the original registered mobile communication network, and enter step b2; otherwise, end this process; b2. The UE establishes a data channel in the newly registered mobile communication network through the signaling processing module corresponding to the newly registered mobile communication network in the multi-protocol data gateway. 6. The method according to claim 5, further comprising: when the UE performs authentication and data channel establishment in the newly registered mobile communication network, the public data processing module in the multi-protocol data gateway saves the For all the data sent to the UE, after the UE data channel is successfully established, all the saved data is transmitted to the UE through the newly created data channel. 7. The method according to claim 1, wherein the data transmission further comprises: the UE sends the data to be transmitted to the data processing module in the multi-protocol data gateway corresponding to the mobile communication network to which it currently belongs; the data processing The module uniformly encapsulates the received data into IPv6 protocol data packets; sends them to the IP core network, and transmits them in the IP core network. 8. The method according to claim 1, wherein the establishment of the data channel is: in the mobile communication network to which the UE currently belongs, establishing data processing between the UE and the multi-protocol data gateway corresponding to the mobile communication network to which the UE currently belongs Connections between module ports. 9. The method according to claim 8, characterized in that the establishment of the data channel further comprises: establishing a binding relationship with the port connection in the public data processing module of the multi-protocol data gateway, and generating detailed call log information.

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