CN1870764A - Method and system for load sharing of signalling point - Google Patents

Abstract

The invention discloses a method for load sharing by a signaling point, comprising the following steps: A. configuring a virtual signaling point on multiple signaling points; B. configuring a global code for the message at a source signaling point receiving a message, and translate the global code into the point code corresponding to the virtual signaling point; C. send the message to the virtual signaling point in the load sharing signaling point through load sharing; D. at least one load sharing signal The node receives the message. The invention also discloses a system for load sharing of signaling points. On the premise that all signaling points requiring load sharing have multi-signaling point functions, the present invention can make SCCP layer routing messages be used in the signaling network through data configuration, and load sharing can be realized on these signaling points Function.

Description

Method and system for load sharing by signaling point

technical field

The invention relates to the field of load sharing among signaling points, in particular to a method and system for load sharing of signaling points.

Background technique

The No. 7 signaling system is a data network used to transmit communication messages, consisting of various signaling points and links connecting signaling points. The node in the signaling network is called SP (Signaling point, signaling point). All signaling points can receive messages and judge whether the message is sent to this node or connected to other signaling points. The channel for transmitting signaling between signaling points is called a link. The link is bidirectional and has the ability to send and receive messages at the same time. The No. 7 signaling system sends various messages through data packets, including: call establishment messages, circuit management messages, network management messages, and also database access messages or remote function call messages. Wherein, the call setup message also includes database access, such as searching routing information by the called number. In addition, the No. 7 signaling system provides a message tandem function, which can send messages to corresponding places according to the addresses in the database. Some messages are used to maintain the connection and operation of the No. 7 signaling system, such as: when a certain part of the network is interrupted Routing reselection message.

The functional structure of the No. 7 signaling system mainly includes: MTP (Message Transfer Part, message transfer part) layer, SCCP (Signaling Connect and Control Part, signaling connection control part) layer, UP (User Part, user part) layer. Among them, the main function of MTP is to provide reliable transmission of signal information in the signaling network, including the function of signaling data link, the function of signaling link and the function of signaling network. SCCP expands the business functions of MTP, and increases the addressing function using GT (Global Title, global code) and SSN (Sub-System Number, subsystem number), that is, the signaling connection control part provides additional functions for the message transfer part, so that Through the No. 7 signaling system, transfer circuit-related and non-circuit-related signaling messages and other types of information between switching offices and switching offices in the telecommunication network, switching offices and special service centers (such as management and maintenance centers) Connectionless and connection-oriented network services.

The connection mode between two signaling points in the No. 7 signaling system can be direct connection or collimated connection. Among them, the signaling network structure of the direct connection mode is shown in Figure 1, and the signaling point 1 is directly connected with the signaling point 21, the signaling point 22, ..., and the signaling point 2n; the signaling network of the quasi-direct connection mode The structure is shown in Figure 2. Signaling point 1 and signaling point 2 are connected to signaling point 3, signaling point 4 and signaling point 5 through STP (Signaling transfer point) 1 and STP2 respectively.

For Fig. 1, if signaling point 21, signaling point 22, ..., and signaling point 2n have the same function, the user hopes that the message received at signaling point 1 can be load-shared to these signaling points. Since the result of GT translation can only reach one destination signaling point, load sharing cannot be performed among signaling points 21, 22, . . . , and 2n.

For Figure 2, when the message sent by signaling point 1 reaches SP3: at signaling point 1, the user layer first fills in the corresponding called GT according to the content of the message, and translates GT into STP1 (or STP2) at the SCCP layer Address, and sent to STP1, and then sent to SP3 after GT translation by the SCCP layer of STP1. Since the GT translation result can only reach one destination signaling point, for messages with the same GT sent on the same signaling point, only one STP can be selected for message forwarding, and the effect of load sharing between two STPs cannot be achieved.

In the prior art, if other signaling points in the signaling network support multiple signaling point load sharing at the SCCP layer except for the load sharing signaling point, that is, the result of GT translation can reach multiple destination signaling points, Then the function of signaling point load sharing can be realized. However, this method requires most of the signaling points in the network to support the load sharing of multiple signaling points at the SCCP layer, and this function is not commonly used on the network. Therefore, this method requires a relatively large transformation of the entire network to achieve complex, high cost.

Contents of the invention

The problem to be solved by the present invention is to provide a method and system for load sharing by signaling points, so as to solve the defect that the prior art cannot realize load sharing between signaling points or signaling transfer points.

In order to solve the above problems, the present invention provides a method for load sharing of signaling points: comprising the following steps:

A. Configure virtual signaling points on multiple signaling points;

B. The source signaling point receiving the message configures a global code for the message, and translates the global code into a point code corresponding to the virtual signaling point;

C. Sending the message to the virtual signaling point in the load sharing signaling point by means of load sharing;

D. At least one load sharing signaling point receives the message.

Step C further includes:

C1. Send the message to the message transmission part layer at the source signaling point;

C2. The message transmission part layer selects the route through the load sharing principle, and sends it to the virtual signaling point in the load sharing signaling point.

Step D further comprises:

D1. The message transfer part of the load sharing signaling point recognizes that the destination of the signaling message is the office, and transfers the message to the signaling connection control part;

D2. The signaling connection control part transmits the message to the user layer;

D3. The user layer receives and processes the message content.

Step D further comprises:

The message transfer part of the load sharing signaling point recognizes that the destination of the signaling message is not the local office, and forwards the message to the destination signaling point.

The multiple signaling points in step A are divided into multiple logical signaling points on each physical signaling point.

The signaling point includes: a network entity that has signaling functions and requires global code addressing, or a network entity that uses the signaling connection control part protocol in the No. 7 signaling system and uses global code addressing in signaling interaction.

The network entity with signaling function and requiring global code addressing includes: short message center, mobile switching center, signaling transfer point in mobile communication network, visitor location register, and home location register.

The invention also discloses a system for load sharing by signaling points, including: a source signaling point, at least two load sharing signaling points, a virtual signaling point is set in the load sharing signaling point; the source signaling point signaling point, and translate the configured global code to the virtual signaling point, and send the message to the virtual signaling point in the load sharing signaling point through load sharing, so as to realize at least one load sharing signaling point Receive and process the message sent by the source signaling point. The message transmission part layer in the source node selects the route through the load sharing principle, and sends it to the virtual signaling point in the load sharing signaling point. The load sharing signaling point includes a destination signaling point or a transfer signaling point.

Compared with the prior art, the present invention has the following advantages:

On the premise that all signaling points requiring load sharing have multi-signaling point functions, the present invention can make SCCP layer routing messages be used in the signaling network through data configuration, and load sharing can be realized on these signaling points Function.

The present invention uses multi-signaling point technology to realize virtual signaling point, only requires all signaling points for load sharing to have multi-signaling point function, and does not make any functional requirements for other signaling points in the network.

Description of drawings

FIG. 1 is a structural diagram of a signaling network in a direct connection mode;

Fig. 2 is a signaling network structure diagram of the quasi-direct connection mode;

Fig. 3 is a preferred example diagram of the signaling point of the present invention carrying out the load sharing system;

Fig. 4 is another preferred example diagram of the signaling point of the present invention carrying out the load sharing system;

Fig. 5 is the flowchart of load sharing by signaling point of the present invention;

Fig. 6 is the general structure of the SCCP message in No. 7 signaling message;

Fig. 7 is a structural diagram of an embodiment of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings for the best implementation of the present invention. First of all, it should be pointed out that the meanings of the terms, words and claims used in the present invention should not be limited to their literal and ordinary meanings, but also include meanings and concepts that are consistent with the technology of the present invention. This is because As the inventor, definitions of terms should be given appropriately so as to best describe the present invention. Therefore, the configurations given in this specification and the accompanying drawings are only preferred implementations of the present invention, rather than enumerating all technical characteristics of the present invention. In addition, there are various equivalents or modifications that can replace the solutions of the present invention.

A preferred example of the signaling point load sharing system of the present invention is shown in Figure 3, including: signaling point 1, signaling point 21, signaling point 22 and signaling point 23, wherein signaling point 1 is the source signal Signaling point, signaling point 21, signaling point 22 and signaling point 23 are signaling points that need to be load shared, and the signaling point 21, signaling point 22 and signaling point 23 are all set with the same Virtual signaling point. Signaling point 1 configures the global code, and translates the global code to the virtual signaling point, then sends the message to be sent to the MTP layer, performs routing selection through the load sharing principle, and sends it to signaling point 21, signaling The virtual signaling point in point 22 and signaling point 23 realizes that at least one signaling point of load sharing can receive and process the message. Wherein, besides the destination signaling point, the load sharing signaling point can also be a transfer signaling point, as shown in Figure 4, signaling point 1 and signaling point 2 are source signaling points, signaling point 3, Signaling point 4 and signaling point 5 are destination signaling points, and transit signaling point 1 and transit signaling point 2 are load sharing signaling points.

The flow chart of the load sharing method for the signaling point of the present invention is shown in Figure 5, including the following steps:

Step S101, configuring virtual signaling points on multiple signaling points requiring load sharing. Through the multi-signaling point function, a same signaling point point code, that is, a virtual signaling point, is configured on multiple signaling points that need to be load-balanced. To realize the above functions, the signaling point for load sharing is required to support the multi-signaling point function.

Step S102, the source signaling point receiving the message configures a global code for the message, and translates the global code into a point code corresponding to the virtual signaling point. Since the virtual signaling points configured on multiple signaling points for load sharing have the same point code, when the global code in the message sent by the source signaling point is translated into the point corresponding to the virtual signaling point When the code is set, all load sharing signaling points configured with virtual signaling points can receive the message. In the source signaling point, the GT code filled in by the upper-layer user and the SCCP user part; after the SCCP layer performs GT translation on the received upper-layer user message, the translation result is the point code corresponding to the virtual signaling point, and then sends the message downward sent to the MTP layer.

Step S103, sending the message to the virtual signaling point in the load sharing signaling point in a load sharing manner. The MTP layer performs route selection. Since the virtual signaling point can be reached through the load sharing signaling point, the message will be sent to the load sharing signaling point according to the load sharing principle. The load sharing principle is to schedule signaling messages to be transmitted between different signaling points or links to achieve reasonable, effective and balanced use of signaling points or link resources. For example, when a certain signaling point is performing multiple When one signaling message is sent and another signaling point is idle, the signaling messages between the two signaling points can be balanced. When these load-sharing signaling points send messages, they use actual signaling points to send messages instead of virtual signaling points.

Step S104, at least one load sharing signaling point receives and processes the message. The message transfer part MTP of the load sharing signaling point recognizes that the destination of the signaling message is the office, as shown in Figure 3, transfers the message to the signaling connection control part SCCP; the signaling connection control part transfers the message to the user layer; the user layer receives and processes the content of the signaling message. The message transfer part MTP of the load sharing signaling point recognizes that the destination of the signaling message is not the local office, and then forwards the message to the destination signaling point, as shown in FIG. 4 .

The SCCP layer in step S102 has an enhanced addressing function, and its general structure is as shown in Figure 6, including: message transmission part, SCCP header and SCCP user part, wherein, the message transmission part includes: DPC (Destination Signaling Point Code , destination signaling point code) and OPC (Original Signaling Point Code, source signaling point code); the SCCP header includes the SCCP called address part and the SCCP calling address part, and the SCCP called part includes the GT code. In addition, the SCCP address includes: SPC (Signaling Point Code, signaling point code, SSN and GT, among them, SPC is in the determined No. 7 signaling system, each signaling point has a uniquely determined signaling point code, SSN It is a subsystem in a signaling point, used to identify SCCP users in a node; GT is a number in a certain numbering plan, which can identify any signaling point and subsystem in the world. In actual use, the calling user of SCCP The address is represented by one or a combination of the above three types of addresses. The two most commonly used are DPC+SSN and GT. When GT is used to represent the address, MTP of the No. 7 signaling system cannot select a route according to GT, SCCP It must be translated into DPC+SSN by called GT in advance, and then the message can be delivered to the MTP layer for transmission.

The multi-signaling point function in step S101 is proposed to solve the limitation that the maximum number of links configured between two adjacent signaling points or between adjacent signaling points and signaling transfer points is 16 of. When multiple signaling points are supported, a physical signaling point is divided into multiple logical signaling points, and each logical signaling point can establish up to 16 signaling links with the peer end, thereby increasing the number of physical signaling points The number of signaling links configured on the

The present invention will be described in detail below in conjunction with specific examples.

Taking the message exchange between the SMSC and the MSC as an example, as shown in FIG. 7, the SMSC 10 and the MSC 20 communicate through the signaling transfer point 30 and the signaling transfer point 40 respectively. Message exchange is realized between the short message center 10 and the mobile switching center 20 through several link groups. The short message center 10 is pre-configured with several global codes, and translates the global codes to the signaling transfer points 30 or 40 in the link group. Link groups can be of the same standard (for example, both are 2Mbit/s high-speed signaling link groups, or all are 64kbit/s signaling link groups), or they can be link groups of different standards (for example, existing 2Mbit/s high-speed signaling link group and 64kbit/s signaling link group). The short message center 10 and the mobile switching center 20 exchange messages through the message delivery part, which adopts the message delivery part of No. 7 signaling, and the two link groups of the message delivery part have the same standard. The specific interaction steps include:

At first on the signaling transfer point 30 and the signaling transfer point 40, respectively configure the virtual signaling point with the same point code; The configuration information of the global code corresponding to the virtual signaling point, and the virtual signaling point code is filled as the destination signaling point in the message, and the selected global code is filled in the called address information of the DPC and SCCP part of the message field; then at the MTP layer, according to the proportional relationship in the configuration information or the working condition of the signaling transfer point and the link, it is determined that the signaling transfer point to be sent is the signaling transfer point 30 or the signaling transfer point 40; This message is passed to the mobile switching center 20 through the signaling transfer point 30 or 40 by the message transfer part of No. 7 signaling; The signaling connection control part of the office; the signaling connection control part of the mobile switching center 20 transfers the message to the user layer of the signaling connection control part; the user layer of the mobile switching center 20 processes the message content after receiving the request message.

In addition to the short message center and the mobile switching center, the signaling point in this embodiment can also be a signaling transfer point in the mobile communication network, a visitor location register, a home location register, etc., which have signaling functions and need to be searched by a global code. It is also applicable to network entities such as the intelligent network that use the signaling connection control part protocol in the No. 7 signaling system and use global code addressing in signaling interaction.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (10)

1, a kind of signalling point carries out the method for load sharing, it is characterized in that, may further comprise the steps:

A, on a plurality of signalling points the configuration virtual signalling point;

B, the Original Signaling Point that receives message are this message arrangement global title, and are the point coding of described virtual signalling point correspondence with this Global Title translation;

C, this message is sent to virtual signalling point in the described load sharing signalling point by the load sharing mode;

D, at least one load sharing signalling point receive this message.

2, signalling point carries out the method for load sharing according to claim 1, it is characterized in that step C further comprises:

C1, this message is sent to the message transfer part layer at Original Signaling Point;

C2, message transfer part layer carry out Route Selection by the load sharing principle, send to the virtual signalling point in the load sharing signalling point.

3, signalling point carries out the method for load sharing according to claim 1, it is characterized in that step D further comprises:

The destination that the Message Transfer Part of D1, this load sharing signalling point is discerned this signaling message is a local exchange, and this message is delivered to SCCP;

D2, this SCCP are delivered to client layer with this message;

D3, client layer receive and handle this message content.

4, signalling point carries out the method for load sharing according to claim 1, it is characterized in that step D further comprises:

The destination that the Message Transfer Part of this load sharing signalling point is discerned this signaling message is not a local exchange, then transmits this message to destination signaling point.

5, signalling point carries out the method for load sharing according to claim 1, it is characterized in that the described a plurality of signalling points of steps A are divided into a plurality of logic signalling points on each physics signalling point.

6, signalling point carries out the method for load sharing according to claim 1, it is characterized in that described signalling point comprises: have signaling capability and need carry out the network entity of global title addressing or use SCCP agreement in the Signaling System 7(SS-7) and in Signalling exchange, use the network entity of global title addressing.

7, carry out the method for load sharing as signalling point as described in the claim 6, it is characterized in that, the described network entity that has signaling capability and need carry out the global title addressing comprises: the Signalling Transfer Point in short message service center, mobile switching centre, the wireless network, VLR Visitor Location Register, attaching position register.

8, a kind of signalling point carries out the system of load sharing, comprising: Original Signaling Point, at least two load sharing signalling points, it is characterized in that,

Be provided with virtual signalling point in the described load sharing signalling point;

Described Original Signaling Point, and with the Global Title translation of configuration to described virtual signalling point, and send a message to virtual signalling point in the described load sharing signalling point by the load sharing mode, realize the message that at least one load sharing signalling point reception sources signalling point sends and handle.

9, as carrying out the system of load sharing as described in the claim 8, it is characterized in that the Message Transfer Part layer carries out Route Selection by the load sharing principle in the source node, send to the virtual signalling point in the load sharing signalling point.

10, carry out the system of load sharing as signalling point as described in the claim 8, it is characterized in that described load sharing signalling point comprises destination signaling point or pass-through signaling point.

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