WO2008074259A1

WO2008074259A1 - Global title translation device and global title processing method

Info

Publication number: WO2008074259A1
Application number: PCT/CN2007/071259
Authority: WO
Inventors: Yunxia Cai; Chunping Yu
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-12-19
Filing date: 2007-12-18
Publication date: 2008-06-26
Also published as: CN100563374C; CN1997235A

Abstract

A global title translation device, includes: a group number storage module, for storing a corresponding relation table of the calling information and the group number; a group number consulting module, for receiving the messages sent from the users, obtaining the corresponding calling information from the messages, consulting the group number storage module according to the calling information, and obtaining the group number corresponding to the calling information; a translation lookup table, for storing the corresponding information between the group number and both of the called addresses and the destination addresses; and a translation module, for obtaining the corresponding information between the group number and both of the called addresses and the destination forwarding addresses from the translation lookup table according to the group number corresponding to the calling information, and for translating the called addresses contained in the messages into destination forwarding addresses according to the corresponding information. Accordingly, the present invention provides a global title processing method. The same GT translation device can translate the same called address into different destination forwarding addresses according to the present invention.

Description

Global title translation device and global title processing method

This application claims priority to Chinese Patent Application No. 200610165385.2, entitled "Global Title Translation Device and Global Title Processing Method" on December 19, 2006, the entire contents of which are incorporated herein by reference. In the application.

TECHNICAL FIELD The present invention relates to addressing techniques in wireless communication technologies, and more particularly to a GT (Global Title) translation apparatus and a GT processing method.

Background technique

The SCCP (Signaling Connection Control Part) in the Signaling System No. 7 provides additional functions for the MTP (Message Transfer Part) to pass through the SS7 network in the exchange and dedicated centers. Establish connectionless and connection-oriented network services, passing circuit-related and unrelated signaling information and other types of information (for example: information for management and maintenance purposes). The SCCP is located above the MTP and forms the network layer of the signaling network together with the MTP Layer 3. The combination of the two provides a network layer function equivalent to the OSI (Open System Interconnection) structure.

One of the biggest limitations of MTP is that it can only be addressed according to DPC (Destination Point Code). This type of addressing is not global, and the total number of DPCs in the network is limited. Therefore, the addressing range is small. , low addressing capability. The introduction of SCCP provides a global GT addressing mode that extends the addressing range and addressing capabilities of MTP. However, since the SCCP message is actually transmitted through the MTP layer 3, when the SCCP message uses the GT mode route, the GT translation needs to be performed, and the translated SPC (Signaling Point Code) is performed in the MTP network. Addressing.

Signaling Network No. 7 consists of SP (Signalling Point), STP (Signalling Tranfer Point), and signaling links connecting them. Among them, STP is a core device, and most of the signaling information in the network (except the F link) is transmitted through STP. Figures 1 and 2 show the two most commonly used networking schematics for the current use of SCCP. In Figure 1, A, B, C, D, and E represent the signaling point codes of five network elements, where A represents the local device, and B acts as the signaling transfer point function (ie, STP), where C, D, and E represent Destination office equipment. In network planning and data configuration, the local device A only needs to know and configure the STP signaling point code (ie B). All messages that need to be translated by GT are translated to B first, and then translated by B to specific purposes. Ground C, D or E, this way only STP data needs to be configured to implement interaction between the local office and the destination office. This reduces the data configuration of the local office and reduces the difficulty of network planning.

In Figure 2, G and H respectively represent the signaling point codes of the local office and the destination office. The networking is generally used when the network is simple and the network elements are small. When doing network planning and data configuration, the local office needs to configure the data of the signaling transfer point STP and the destination signaling point, and the MTP is transferred to the destination signaling point through STP. The local office G needs to translate directly to the destination office H according to the GT routing message.

In the above two networks most commonly used at present, the calling addresses that need to perform GT translation are the same, such as the local A and G in FIG. 1 and FIG. 2, and only perform addressing according to the called address when performing GT translation. The process of GT translation is as follows: After receiving the MTP information, the STP selects the addressing mode according to the content of the information, namely: "DPC (Destination Point Code) + SSN (Subsystem Number)" , "DPC,,, "DPC+Original GT" or "DPC+New GT,,, and then according to the principle of maximum matching, find the translation comparison table in turn, and perform GT translation on the called address. According to the above addressing method, the corresponding "NI ( Network Identity, Network Identification) +SPC+SSN,,, "NI+SPC", "NI+SPC+Original GT" or "NI+SPC+New GT" translation result information, and then addressing based on the translation result information, implementing information Routing.

However, when the local devices are different and the STP is required to forward messages sent by different local devices according to different routes, the prior art only performs the GT translation method according to the called address. As shown in FIG. 3, it is a schematic diagram of a local device in the prior art as an SCCP layer signaling transfer point application. In Figure 3, STP represents the local device and completes the message transfer function of the SCCP layer. The MSC (Mobile Switching Centre) 1 and STP1 belong to the same telecom operator SP1, and MSC2 and STP2 belong to another operator SP2. Due to operating costs or other factors, the operator SP1 wants the STP to forward the message from the MSC1 to the HLR (Home Location Register) through STP1. Similarly, SP2 expects the STP to forward the message from MSC2 to the HLR through STP2. Another example is as shown in Figure 4, which is a schematic diagram of the application of the local device in the prior art as a virtual multiple logical office. In Figure 4, I and J respectively represent the signaling points of the local device virtual into two logical offices, K represents the SCCP signaling transfer point device, and the HLR is the home location register of the destination office, which has only one HLR number (ie only one GT code), I, J and HLR have message interaction. In practical applications, the GT from the I office to the HLR needs to be directly translated to the HLR, and the GT from the J office to the HLR is first translated to K in the DPC + original GT mode, and then translated into the HLR by K.

It can be seen that in the prior art, only the devices of the local office can be implemented the same, and only according to the called address. The implementation process of the GT translation cannot meet the problem that the current device is different, and the STP needs to forward the messages sent by different local devices according to different routes.

Summary of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a global title translation apparatus and a global title processing method to solve the problem that the local devices are different and the STP is required to forward messages sent by different local devices according to different routes.

In order to solve the above technical problem, a global title translation apparatus provided by an embodiment of the present invention includes: a group number storage module, configured to store a correspondence table between a calling party information and a group number;

a group number querying module, configured to receive a message sent by the user, obtain corresponding calling party information from the message, and query the group number storage module according to the calling party information to obtain a group number corresponding to the calling party information;

a translation comparison table, configured to store correspondence information between the group number, the called address, and the destination forwarding address; and a translation module, configured to obtain the group from the translation comparison table according to the group number corresponding to the calling information The corresponding information between the number and the called address and the destination forwarding address translates the called address carried in the message into a destination forwarding address according to the corresponding information.

To solve the above technical problem, a global title processing method provided by an embodiment of the present invention includes:

Obtaining a group number corresponding to the calling information carried in the received message;

And translating the called address carried in the message into a destination forwarding address according to the group number corresponding to the calling information and a preset translation comparison table.

Embodiments of the present invention have the following beneficial technical effects:

For the same called address, different translation results are configured according to different calling information, and when the GT is translated to the called address, the called address is translated in combination with the calling information, so that the same GT translation device can be the same The address is translated into a different destination forwarding address. It can be seen that the present invention can not only meet the requirements of different destination addresses of STP translation, but also forward the messages sent by different local devices according to different routes. It can also be satisfied that when the virtual local office signaling points are different, it can be translated to different destination addresses, that is, the technology is not necessarily used by STP.

The technical solution of the present invention will be further described in detail below through the accompanying drawings and embodiments.

DRAWINGS

FIG. 1 is a schematic diagram of the most commonly used networking in the prior art using SCCP. 2 is a schematic diagram of another networking technique that is most commonly used in the prior art using SCCP.

FIG. 3 is a schematic diagram of the application of the local device as an SCCP layer signaling transfer point in the prior art.

FIG. 4 is a schematic diagram of the application of the local device as a virtual office of multiple logical offices in the prior art.

Fig. 5 is a schematic structural view of a GT translation apparatus of the present invention.

Figure 6 is a flow chart of the GT processing method of the present invention.

FIG. 7 is a schematic diagram of an application of the GT processing method in a dual-homing network according to the present invention.

FIG. 8 is a diagram showing an example of applying the GT processing method in a large local networking.

detailed description

In the embodiment of the present invention, different GT groups are configured in different GT translation devices in advance, and a correspondence table between the calling information and the group numbers of each GT group is established, and the called addresses are respectively specified in each GT group. Corresponding information with the destination forwarding address, when translating the called address, first determining the GT group according to the calling information, and then according to the corresponding information between the called address and the destination forwarding address in the belonging GT group, Call the address for GT translation.

Referring to FIG. 5, it is a schematic structural diagram of a GT translation apparatus according to the present invention. The GT translation apparatus includes a group number storage module 1, a group number query module 2, a translation module 3, and a translation comparison table 4 connected in sequence.

The group number storage module 1 is configured to store a correspondence table between the calling information and the group number of each GT group. The calling information may specifically encode an Originating Point Code (OPC), an SSN, or a global header value (ie, a GT value) carried in the calling address information.

After receiving the message sent by the user, the group number query module 2 obtains the calling address information carried in the message, further acquires the calling information in the calling address information: OPC, SSN or GT value, and queries the group number storage. The correspondence table stored in the module 1 acquires the group number of the GT group corresponding to the calling information.

The translation comparison table 4 is used to store the correspondence information between the group number of each GT group, the called address, and the destination forwarding address.

The translation module 3 is configured to, according to the group number obtained by the group number storage module 1, query the translation comparison table stored in the translation comparison table 4, and translate the called address in the message into the GT group corresponding to the corresponding calling information. Destination forwarding address.

In another case, the translation module 3 is further configured to: according to the group number corresponding to the calling information, obtain the correspondence between the group number and the called address and the destination forwarding address from the translation comparison table. And translating, according to the corresponding information, the called address carried in the message into a destination forwarding address. Preferably, the translation module 3 specifically includes an addressing mode determining unit 31 and a translation processing unit 32. The addressing mode determining unit 31 is connected to the group number querying module 2, and is configured to determine an addressing mode according to the called address information, or to determine an addressing mode according to the called address information carried in the message, where There are two addressing modes: According to SSN addressing and according to GT addressing, if the addressing is based on GT, the message needs to be translated, otherwise no translation is required. The specific addressing mode is: DPC+SSN, DPC, DPC+ original GT or DPC+ new GT. The translation processing unit 32 is respectively connected to the addressing mode determining unit 31 and the translation comparison table 4, and is configured to translate the called address into the destination forwarding address according to the determined addressing mode according to the group number and the translation comparison table corresponding to the calling information. . In addition, the translation processing unit 32 is further configured to query the translation comparison table 4 according to the group number corresponding to the calling information, and obtain corresponding information between the group number and the called address and the destination forwarding address, and according to the The corresponding information and the determined addressing mode are translated, and the called address is translated into a destination forwarding address.

Therefore, different GT groups are configured according to OPC, SSN or GT values in different calling address information, and a correspondence table between different OPC, SSN or GT values and corresponding GT group group numbers is established, in translation comparison In the table, corresponding information between the called address and the destination forwarding address is specified for different GT groups. After that, the called address is GT translated according to the calling information combined with the called address.

6 is a flowchart of a GT processing method according to the present invention, which includes the following steps: Step 601: Receive a message sent by a user, obtain a calling address information carried in the message, and further obtain the calling address information. The calling information in the OPC, SSN or GT value, and query the correspondence table between the calling information and the group number, and obtain the group number of the GT group corresponding to the calling information.

Step 602: Query the correspondence information between the called address and the destination forwarding address in the GT group identified by the group number corresponding to the calling information in the translation comparison table, and translate the called address carried in the message into a destination forwarding address.

That is, in step 602, the called address carried in the message is translated into the destination forwarding address according to the group number corresponding to the calling information and the preset translation comparison table. That is, according to the group number corresponding to the calling information, the correspondence information between the group number and the called address and the destination forwarding address is obtained from the preset translation comparison table, and the corresponding information is used according to the corresponding information. The called address carried in the message is translated into the destination forwarding address.

The method for performing GT translation on the called address by using the calling address information combined with the called address information can translate the same called address corresponding to different calling address information into different destination forwarding addresses. Therefore, the same STP can be used to forward messages sent by different local devices according to different routes. However, the present invention is not limited to this. The virtual local office signaling points may be translated to different destination addresses, that is, not necessarily STP. technology. For a schematic diagram of the implementation principle, refer to FIG. 3 and FIG. 4. The specific implementation process is not described here.

In the specific translation, the addressing mode is first determined according to the called address information, and the addressing modes include two types: According to the SSN addressing and the GT addressing, if the GT addressing is required, the message needs to be translated. Otherwise no translation is required. The specific addressing mode is: DPC+SSN, DPC, DPC+ original GT or DPC+ new GT, and then query the GT group identified by the group number corresponding to the calling information in the translation comparison table, the called address and destination The corresponding information between the forwarding addresses translates the called address carried in the message into a destination forwarding address, and the destination forwarding address mode may be: DPC+SSN, DPC, DPC+original GT, DPC+new GT; Addressing is based on the destination forwarding address.

Preferably, if the determined addressing mode is DPC+SSN, when the GT translation is performed, the called address is translated into a destination forwarding address represented by NI+SPC+SSN, where the DPC is used to indicate the node where the SSN is located. If the addressing mode is determined to be DPC, when the GT translation is performed, the called address is translated into a destination forwarding address represented by NI+SPC, where the DPC is used to indicate the destination node. If the addressing mode used is DPC + original GT, when the GT translation is performed, the called address is translated into the destination forwarding address represented by NI+SPC+ original GT. If the addressing mode used is DPC+New GT (Translation Type Code) (that is, another GT with different GT in the called address of the message), when the GT translation is performed, the called address is translated to NI+SPC+New GT. Indicates the destination forwarding address, where the DPC is used to indicate the next node to translate the global name.

That is to say, the translated destination address can be in four ways: NI+DPC+SSN, NI+DPC, NI+DPC+original GT, NI+DPC+new GT (ie different from the GT in the called address in the original message) Another GT). If the translated destination address is NI+DPC+SSN, insert the SSN into the called address (if the called address does not originally contain the SSN) or replace the SSN of the called address, and the addressing mode of the called address of the message. Set to address based on SSN and then route the message to the translated DPC. If the translated destination address is NI+DPC, the called address addressing mode in the message is set to route the message to the DPC according to the SSN addressing. If the translated destination address is NI+DPC+original GT, the called address addressing mode in the message is set to route the message to the DPC according to GT addressing. If the destination address obtained by the translation is NI+DPC+new GT, then the GT in the called address in the new GT replacement message, the addressing mode of the called address is set to be addressed according to GT, The message is then routed to the DPC.

It can be seen that the general beneficial effects of the embodiments of the present invention are as follows: The same GT translation device can translate the same called address into a different destination forwarding address, and the STP will send different local device sending messages when the local device is different. Follow the requirements of different routing forwarding.

In order to facilitate the understanding of those skilled in the art, please refer to the application examples described below.

Please refer to FIG. 7, which is an example diagram of the GT processing method applied in the dual-homing network. As shown in Figure 7, in the dual-homed network, the A-office and the B-office are backups of each other. In normal operation, the A-office and the B-office are connected through STP, that is, for the A-office, the GT code of the B-office ( For example, 86139) should be translated into the signaling point CC of STP. The destination address obtained by translation is NI+DPC+ original GT. For the B office, 86139 is the local GT, which should be translated into the local signaling point code BB. The address method is NI+DPC. Since the A and B offices are backed up each other, the A office should configure the data of the B office as a backup. That is, the standby OPC of the A office should be BB. For the OPC, the 86139 GT code should be translated into the B office. Signaling point BB. Thus, in the A-office, the same GT code 86139, there are two different translation modes in the A-office: For its primary OPC AA, the translation is the STP (CC) destination signaling point, and the translated address is NI+. The DPC+ original GT, for its standby OPC BB, is translated into the B-office signaling point (BB). It can be seen that the prior art cannot meet this requirement. On the contrary, the present invention can configure two GT groups, respectively corresponding to this SIPO. Signaling points AA and BB, in group 1 (corresponding to local office signaling Λ AA), GT code 86139 is translated into CC signaling point, in group 2 (corresponding to alternate local signaling point BB), GT code 86139 is translated into BB signaling point. Therefore, the problem that the STP sends different messages sent by the local device according to different routes is solved because the devices in the local device are different.

For example, refer to FIG. 8, which is an example diagram of the GT processing method applied in the large local networking. It should be noted that the large local network, that is, one switching office, is virtualized into multiple virtual MSCs and serves multiple areas.

As shown in FIG. 8, the exchange A of the A is virtualized into two MSCs, which are respectively served by the A and the B. The local MSC signaling point of the A is AA, and the local signaling point of the B is BB. Since there is an HLR (Signaling Point DD) in Area A, the operator wants to keep the original data configuration pattern unchanged, that is, the virtual MSC1 serving the A service is directly connected to the HLR, and the virtual MSC2 serving the B is passing the STP. Connected to the HLR. Therefore, in the A office, the HLR GT code (such as 86136) for the virtual MSC1, translated to the HLR signaling point DD, the destination address mode should be NI + DPC; for the virtual MSC2, translate to the STP signaling point CC, the purpose The address mode is NI+DPC+ original GT. It can be seen that the prior art cannot To meet the demand, the present invention can configure two GT groups, corresponding to the local signaling points AA and BB, respectively, in group 1 (corresponding to the local signaling point AA), the GT code 86136 is translated into the DD signaling point, in the group 2 (corresponding to the alternate local signaling point BB), the GT code 86136 is translated into a CC signaling point. Therefore, the problem that the messages sent by different local devices are forwarded according to different routes is required because the devices of the local office are different.

It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and are not to be construed as limiting. Although the present invention has been described in detail with reference to the preferred embodiments thereof, those skilled in the art will understand that the invention may be modified or equivalently substituted without departing from the invention. The spirit and scope of the programme.

Claims

Rights request

A global title translation apparatus, comprising:

a group number storage module, configured to store a correspondence table between the calling information and the group number;

2. The global title translation apparatus according to claim 1, wherein the translation module comprises:

The addressing mode determining unit is connected to the group number querying module, and configured to determine an addressing mode according to the information carrying the called address in the message;

a translation processing unit, configured to connect to the addressing mode determining unit and the translation comparison table, respectively, configured to query the translation comparison table according to the group number corresponding to the calling information, to obtain the group number and the called address and The destination forwards the corresponding information between the addresses, and translates the called address into a destination forwarding address according to the corresponding information and the determined addressing manner.

3. A global title processing method, comprising:

The global title translation apparatus according to claim 3, wherein the calling information is an original signaling point code, a subsystem or a global title value carried in the calling address information.

The global title processing method according to claim 3 or 4, wherein the translation of the called address into a destination forwarding address is specifically:

Determining an addressing mode according to the information carrying the called address in the message;

Querying, according to the group number corresponding to the calling information, a preset translation comparison table, and obtaining corresponding information between the group number and the called address and the destination forwarding address, and according to the corresponding information and the determined The addressing mode translates the called address into a destination forwarding address.

The global title processing method according to claim 5, wherein the determining the addressing mode according to the information carrying the called address in the message is:

The addressing mode is determined according to the addressing mode information in the called address information carried in the message, specifically: the destination signaling point code DPC+ subsystem SSN, DPC, DPC+ original global title GT or DPC+ new GT.

The global title processing method according to claim 6, wherein when the determined addressing mode is DPC+SSN, the called address is translated to be represented by a network identifier NI+ signaling point code SPC+SSN. The destination forwarding address.

8. The global title processing method according to claim 6, wherein when the determined addressing mode is DPC, the called address is translated into a destination forwarding address represented by NI+SPC.

The global title processing method according to claim 6, wherein when the determined addressing mode is DPC+original GT, the called address is translated into a destination forwarding address represented by NI+SPC+original GT.

The global title processing method according to claim 6, wherein when the determined addressing mode is DPC+new GT, the called address is translated into a destination forwarding address represented by NI+SPC+new GT.