KR100418343B1 - Signaling Message Distribution Method For MTP User Part In No.7 Signaling Network - Google Patents

Abstract

The present invention is a No.7 signal that enables to distribute and distribute a signal message to a plurality of MTP (Message Transfer Part) user part instances using Signaling Link Selection (SLS) included in the signal message in the No.7 signal network. The present invention relates to a method of distributing MTP user part messages in a network, and in the related art, signaling messages are concentrated on a specific MTP user part instance because the signaling message is transmitted to the MTP user part instance first searched from the user part database. There is a problem that a misorder occurs when distributing a signal message of an MTP user part.

Accordingly, the present invention manages the message distribution information cache for the MTP user part in the No.7 signaling network, and uses the SLS included in the signal message and the number of available MTP user part instances to distribute the MTP user part instance. By making the decision, it is possible to find available MTP user parts in less time than searching the actual user part database, and to evenly distribute signaling messages to multiple available MTP user part instances.

In addition, according to the present invention, by distributing signal messages having the same SLS to the same MTP user part instance, it is possible to prevent the occurrence of an error order when distributing the signal message.

Description

Signaling Message Distribution Method For MTP User Part In No.7 Signaling Network

The present invention relates to the distribution of signaling messages in No.7 signaling network. In particular, the present invention relates to distributing and distributing a signaling message to a plurality of MTP (Message Transfer Part) user part instances using Signaling Link Selection (SLS) included in the signaling message. MTP user part message distribution method of No.7 signaling network which is made possible.

In general, the No.7 signaling method is different from the conventional calling method in which the call path and the signal path are used together, so that they are completely separated from each other. It is a common line signaling method for transmitting and receiving signal information through.

A schematic configuration of a network using the No. 7 signaling method, that is, the No. 7 signal network is shown in FIG. 1 attached to the drawing, and a signaling entity distinguished from the corresponding No. 7 signal network is shown. It is called a signaling point, and the corresponding signal point can be classified by a signal point code.

Here, the protocol structure of each signal point is required for the MTP (Message Transfer Part) level 1 to level 3, which performs the signal data connection function and the signaling message transfer and processing function as shown in FIG. Telephony User Part (TUP) in charge of signal processing, IDN (ISDN User Part) providing circuit-switched and supplementary services for voice and non-voice applications of ISDN, logical signal access control in network and transmission of signal data It consists of a level 4 MTP user part, such as a Signaling Connection Control Part (SCCP), which is a kind of message routing part that provides.

At this time, MTP level 3 performs two functions of signaling network management and signaling message handling. The signaling message processing function is included in the signaling message when the local MTP receives the signaling message from the MTP of the power station. This means that the routing label and the service information octet (SIO) are extracted to determine the signaling message and then route processing to other signal points or distribution to the MTP user unit.

The local MTP manages the information on the MTP user part to distribute the signaling message received from the power point to the corresponding MTP user part.

That is, in order for the MTP user part to properly use the primitives provided by the MTP, the MTP user part registers its user part information with the MTP at the time when the corresponding MTP user part becomes available, where the MTP user registers the user part information with the MTP user. The user database is stored in the secondary database, and the user database includes the index of the user database, the type of the user database, the address of the processor in which the user database is loaded, the status of the user database, and the user management process ID. In this case, the MTP user part instance is distributed to a plurality of processors as shown in FIG. 3.

index User part type Processor address User part status User part management process ID User Part Message Processing Process ID One SCCP 400 AVAIL 0x400005e 0 2 ISUP 500 AVAIL 0 0x5000041 3 SCCP 600 AVAIL 0 0x6000008 4 SCCP 620 AVAIL 0 0x6200149 5 BISUP 600 AVAIL 0 0x6000023 6 SCCP 640 Unavailable (UNAVAIL) 0 0x6400043 7 SCCP 630 AVAIL 0 0x630005e

Meanwhile, the operation of distributing the signal message to the MTP user unit in the conventional No. 7 signal network will be described with reference to FIG. 4.

First, when the local MTP receives the signal message as shown in FIG. 5 from the MTP of the power station signal point (step S41), the signal determination unit analyzes the received signal message, extracts the routing label and the SIO information, and then includes the extracted SIO information. It checks whether the network indicator (NI) of the sub-srvice field is the national NI, and discards the signal message if the NI is not defined.

Then, it is checked whether the destination point (Destination Point Code) of the extracted routing label is the own station, that is, whether the final destination point of the received signal message is the own station (step S42).

At this time, if the final destination of the signal message is not the own station, the message determination unit transfers the received signal message to the message routing unit for routing processing (step S43).

However, if the final destination of the signal message is the own station, the message determination unit transmits the received signal message to the message distribution unit (step S44), whereby the message distribution unit distributes the received signal message to the upper user unit.

That is, the message distribution unit which has received the signaling message searches the user unit database (step S45), checks whether there is an MTP user unit for distributing the signal message (step S46), and if there is no MTP user unit, The user part unavailable signal message is transmitted to the MTP (step S47).

However, if there is an MTP user part to distribute the signal message in step S45, the signal message is distributed to the MTP user part corresponding to the user part management or user part message processing process ID (step S48). The user part to distribute the signal message is defined in the database, and the state of the user part (Avail / Unavail) is searched and the process ID of the user part retrieved at first is extracted and the signal message is distributed to the corresponding MTP user part.

As described above, in the conventional No.7 signaling network, when distributing signaling messages to the MTP user portion, the signaling message is transmitted to a specific MTP user portion instance because the user portion database is searched and the message is transmitted to the first MTP user portion instance to be searched. There is a problem that is concentrated, because of this there is a problem that the misorder occurs when distributing the signal message of the MTP user unit.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide an available MTP user part instance at a faster time than searching an actual user part database when distributing a signaling message to the MTP user part in No.7 signaling network. The index of the user part database for the MTP user part and the number of available MTP user part instances are stored in the message distribution information cache so as to be found.

Another object of the present invention is to determine an MTP user part instance to distribute a signaling message by using the SLS included in the signaling message and the number of available MTP user part instances so that the signaling message is equally distributed to the plurality of available MTP user part instances. By distributing, it prevents the overload of intensively distributing signaling messages to a specific MTP user part instance.

On the other hand, another object of the present invention, by distributing the signaling message having the same SLS to the same MTP user part instance, to prevent the occurrence of a misorder in the distribution of the signaling message.

1 is a schematic configuration diagram of a general No. 7 signal network.

FIG. 2 is a diagram showing a protocol structure of each signal point shown in FIG.

3 is a diagram illustrating a processor distribution structure of an MTP user part instance in a general No. 7 signaling network.

4 is a flowchart illustrating a signal message distribution operation from a conventional No. 7 signal network to an MTP user unit.

FIG. 5 illustrates a signal message structure received from the MTP of the power point in FIG. 4; FIG.

6 is a flowchart illustrating a management procedure for MTP user part information registration request in No. 7 signal network according to the present invention;

7 is a flowchart illustrating a signal message distribution operation from the No. 7 signal network to the MTP user unit according to the present invention;

A feature of the present invention for achieving the above object is the process of storing and managing the index of the user part database for the MTP user part and the number of available MTP user part instances in the message distribution information cache; Checking whether the available MTP user part instance exists by searching the message distribution information cache when a signaling message is received for the MTP user part whose final destination is its own; Determining an MTP user part instance to distribute a signaling message by using the SLS extracted from the signaling message and the number of available MTP user part instances when an available MTP user part instance exists; The present invention provides a method for distributing an MTP user part message of a number 7 signal network including distributing a signal message to the determined MTP user part instance.

The determining of the MTP user part instance to which the signal message is to be distributed may be performed by calculating the SLS extracted from the signal message by using the number of available MTP user part instances as a module.

The method for distributing the MTP user part message of the above-mentioned No.7 signal network is a user part unavailable signal message for the MTP of the power station signal point when there is no MTP user part instance available as a result of searching the message distribution information cache. Characterized in that it further comprises the step of transmitting.

Furthermore, the process of managing the message distribution information cache for the MTP user unit may include: registering information of the MTP user unit requesting registration for distributing signal messages to the MTP user unit in a user unit database; Checking whether the currently registered MTP user part information is an MTP user part already registered in a corresponding processor; Storing the index of the user part database in which the current MTP user part information is registered in the message distribution information cache when the MTP user part is not registered, and increasing the number of available MTP user part instances by '1'. .

In this case, registering the MTP user part information in the user part database may include: checking whether an MTP user part instance is already registered in a corresponding processor when an MTP user part registration request is made; If the MTP user part instance is already registered, retrieving the index of the registered user part database and registering the requested MTP user part information; If the MTP user part instance is not already registered, the method may include registering MTP user part information requested for registration after allocating a new user part database.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the No. 7 signaling network according to the present invention, when distributing a signaling message to an MTP user unit, the signaling message is distributed and distributed to a plurality of MTP user unit instances using SLS (Signaling Link Selection) included in the signaling message. For this purpose, the MTP stores and manages the index of the user database for the MTP user database and the number of available MTP user database instances in the message distribution information cache as shown in Table 2 below (when the user database is the same as Table 1).

Instances of Available MTP User Part (SCCP) Index of user part database 4 3 4 6 7

That is, when the MTP user part requests the user part registration to the MTP, the MTP increases the number of instances of the SCCP which is the MTP user part currently available and the index of the user part database and stores it in the message distribution information cache managed by the user. Done.

When MTP distributes a signaling message to the MTP user part, the MTP extracts an index of the user part database from the message distribution information cache and finds an available MTP user part at a faster time than searching the actual user part database.

In addition, by determining the MTP user part to distribute the corresponding signaling message using the SLS included in the signaling message, it is possible to prevent an overload in which the signal message is intensively distributed to a specific MTP user part instance, and to have a signaling message having the same SLS. In this case, by distributing to the same MTP user part instance, it is possible to prevent a misorder occurring in distributing a signal message.

On the other hand, with reference to Figure 6 attached to the management procedure for the MTP user portion information registration request in the No.7 signal network according to the present invention as follows.

First, when the MTP user unit requests MTP user unit registration to distribute signaling messages to the MTP (step S61), the MTP registers the information of the user unit requesting registration in the user unit database, where the user unit registration is requested. Check whether the MTP user part instance is already registered in the received processor (that is, the processor in which the user part is loaded) (step S62), and if the MTP user part instance is already registered, search the index of the registered user part database. Then, the user part information is registered (steps S63 and S65). If the MTP user part instance is not already registered, the user part information is registered after allocating a new user part database (steps S64 and S65).

Subsequently, the MTP notifies the MTP user portion requesting registration that the registration is completed (step S66), and then checks whether the currently registered MTP user portion information is the MTP user portion already registered in the processor (step S67).

If the MTP user part is not already registered, the MTP stores an index of the user part database in which the current MTP user part information is registered in the message distribution information cache (step S68), and at the same time, the number of MTP user part instances currently available. Is increased by '1' (step S69).

The message message distribution operation to the MTP user unit in the state of managing the message distribution information cache as described above will be described in detail with reference to FIG. 7.

First, when the local MTP receives the signal message from the MTP of the power station signal (step S71), the signal determination unit analyzes the received signal message to extract the routing label and the SIO information, and then the subservice included in the extracted SIO information. It checks whether the NI (Network Indicator) in the (Sub-Srvice) field is the NI of its own country and discards the signal message if the NI is not defined.

Then, it is checked whether the destination point code of the extracted routing label is the own station, that is, whether the final destination point of the received signal message is the own station (step S72).

At this time, if the final destination of the signal message is not the own station, the message determination unit transfers the received signal message to the message routing unit for routing processing (step S73).

However, if the final destination of the signal message is the own station, the message determination unit transmits the received signal message to the message distribution unit (step S74), whereby the message distribution unit distributes the received message to the upper user unit.

That is, the message distribution unit checks whether the signal message received from the message determination unit is a signal message for the MTP user unit (step S75), and if the signal message is not a signal message for the MTP user unit, the received signal message corresponds to the corresponding signal network. Distribution is made to the management unit (step S76).

However, if the signaling message is a signaling message for the MTP user part, the message distribution information cache is searched to determine whether there are available MTP user part instances, that is, whether the number of available MTP user part instances is greater than or equal to '1' (step S77). ).

In this case, when the number of available MTP user part instances is not greater than or equal to '1', that is, '0', it means that there is no available MTP user part for distributing the signaling message. Is transmitted (step S78).

When the number of available MTP user part instances is equal to or greater than '1', that is, when there are available MTP user part instances, the message distributor extracts the SLS from the received signal message (step S79), and then extracts the extracted SLS from the number of available MTP user part instances. The MTP user part to distribute the signaling message is determined (step S80). At this time, as shown in Equation 1 below, SLS is modulated by the number of available MTP user part instances to modulate (%) the signal message to be distributed. The MTP user part, that is, the index of the user part database is determined.

Thereafter, the message distribution unit distributes the signal message to the MTP user unit determined above (step S81), so that the MTP user unit which should receive the signal message having the specific SLS can continue to receive the signal message including the corresponding SLS, and is available. If there are two or more MTP user part instances, it is possible to prevent the overload of intensive distribution of signaling messages to a specific MTP user part instance.

In addition, the embodiments according to the present invention are not limited to the above-described embodiments, and various alternatives, modifications, and changes can be made within the scope apparent to those skilled in the art.

As described above, the present invention manages the message distribution information cache for the MTP user part in No.7 signaling network, and uses the SLS included in the signal message and the number of MTP user part instances available to distribute the MTP user part. By determining the instance, it is possible to find an available MTP user part faster than searching the actual user part database, and evenly distribute the signaling message to multiple available MTP user part instances.

In addition, according to the present invention, by distributing signal messages having the same SLS to the same MTP user part instance, it is possible to prevent the occurrence of an error order when distributing the signal message.

Claims (5)

Storing and managing the index of the user part database for the MTP user part and the number of available MTP user part instances in the message distribution information cache; Checking whether the available MTP user part instance exists by searching the message distribution information cache when a signaling message is received for the MTP user part whose final destination is its own; Determining an MTP user part instance to distribute a signaling message by using the SLS extracted from the signaling message and the number of available MTP user part instances when an available MTP user part instance exists; And distributing the signal message to the determined MTP user part instance. The method of claim 1, The determining of the MTP user part instance for distributing the signaling message may include determining an MLS user part message by calculating the SLS extracted from the signal message using the number of available MTP user part instances as a module. Way. The method of claim 1, And if the MDM user part instance is not available as a result of searching the message distribution information cache, transmitting the user part unavailable signaling message to the MTP of the power point. Method of distributing user part message. The method of claim 1, The managing of the message distribution information cache for the MTP user unit may include: registering information of the MTP user unit, which requires registration for distribution of a signal message to the MTP user unit, in a user unit database; Checking whether the currently registered MTP user part information is an MTP user part already registered in a corresponding processor; Storing the index of the user part database in which the current MTP user part information is registered in the message distribution information cache when the MTP user part is not registered, and increasing the number of available MTP user part instances by '1'. Number distribution method of MPP user part of Seven Signaling Network. The method of claim 4, wherein The registering of the MTP user part information in the user part database may include: checking whether an MTP user part instance is already registered in a corresponding processor when an MTP user part registration request is made; If the MTP user part instance is already registered, retrieving the index of the registered user part database and registering the requested MTP user part information; MTP user part message distribution method comprising the step of registering the MTP user part information requested for registration after allocating a new user part database if the MTP user part instance is not already registered. .