KR100319123B1 - Routing method to signal procssing unit and routing data storing method upon intelization in transaction capability application part of intelligence network system - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs

Description of routing method between signal processing devices in TCAP (Transaction Capabilities Application Part) exchange system of intelligent network system.

I. The technical problem to be solved by the invention

It provides a routing method that can deliver messages quickly and efficiently from TCAP of intelligent network system to signal processing device of switching system.

All. Summary of Solution of the Invention

The present invention relates to a data storage method for routing from a TCAP to a signal processing device of an exchange system when an intelligent network system is initialized. When the signal point information request signal is received from an INP, the SS of the exchange system is used. Outputting a status information request signal to a processor of a SCCP layer, receiving a response signal and detection point information from a processor of the SCCP layer, storing the received detection point information in a buffer, and then Outputting the signal point address data when the signal point address data is received from the processor of the SCCP layer, storing the table in a memory for routing, and transmitting the signal point address data to the INAP; Outputting a status information request signal to a signal processing apparatus corresponding to an MTP level 3 of the MTP; Storing the SS signal point state, the SP signal point state signal, the GT translation table, and the ALTI translation table in a memory for routing the received signal. And outputting an end response signal to the signal processing device upon receiving the signal point data end signal from the signal processing device.

la. Important uses of the invention

It is used for routing messages output from TCAP of intelligent network to switching system.

Description

ROUTING METHOD TO SIGNAL PROCSSING UNIT AND ROUTING DATA STORING METHOD UPON INTELIZATION IN TRANSACTION CAPABILITY APPLICATION PART OF INTELLIGENCE NETWORK SYSTEM}

The present invention relates to a routing method between an intelligent network system and a switching system, and more particularly, to a routing method from a TCAP (transaction capabilities application part) of an intelligent network system to a signaling device of a switching system.

In general, the switching system is used as a device that serves to form a communication line between subscribers. This exchange system has increased the volume and volume of work that the exchange system has to handle as the number of subscribers and more additional services from subscribers are required. On the other hand, in order to add another additional function in one exchange system, the overall elements of the exchange system must be modified. Therefore, it is difficult to add a specific service due to the increase in the volume of the exchange system, and there is a problem that requires a lot of manpower, time and cost for each additional function.

Therefore, a method of adding a service by using a system providing an additional additional service independent of the switching system has emerged. As such, a system that performs additional services independently of the switching system is called an intelligent network system. As the service provided by the intelligent network system has been further developed with the development of No.7 signal processing technology, the exchange-based service is currently provided, and the research on the subscriber-based and group-based services is actively conducted.

1 is a diagram illustrating the structure of an OSI 7 layer and a layer structure of a No. 7 signal processing signaling system. Hereinafter, referring to FIG. 1, the layer of the signaling system of the No. 7 signal processing apparatus in comparison with the OSI 7 layer will be described in detail.

The MTP (Massage Transfer Part) level 1 (20A) of the No. 7 signaling system layer corresponds to the physical layer 10A of the OSI 7 layer and processes physical and electrical data. The MTP level 2 (20B) of the No.7 signaling system layer corresponds to the data link layer (10B) of the OSI 7 layer and performs operations according to message classification, flow control, sequence number checking, error checking, and retransmission in error. do. MTP level 3 (20C) of the No. 7 signaling system layer corresponds to the network layer (10C) of the OSI 7 layer to perform destination determination, routing, and message distribution. The Signaling Connection Control Part (SCCP) 20D of the No.7 signaling system layer corresponds to the transport layer 10D of the OSI 7 layer, and transmits circuit-related information between special facilities of the network. Provides connectionless network services. ISUP (ISDN User Part) 20G of the No.7 signaling system layer corresponds to parts of the transport layer 10D to the application layer 10G of the OSI 7 layer, and transmits voice data between the caller and the called party, Handles setup, management, recovery procedures and protocol related data. The TUP (Telephone User Part) 20H of the No. 7 signaling system layer corresponds to the transport layer 10D to the application layer 10G of the OSI 7 layer in the same manner as the ISUP 20G, and is required for the telephone exchange during the exchange period. It is responsible for the function of the signal. The TCAP 20E and the INAP (Intelligent Network Application Protocol) 20F of the No. 7 signaling system layer are layers corresponding to the application layer 10G of the OSI 7 layer. In addition, the INAP 20F exists above the TCAP 20E.

In the above No.7 signaling system layer, MTP level 1 (20A) to MTP level 3 (20C) are performed by a lower processor (Peripheral Processor) that is a device for processing signals in the switching system. The SCCP 20D is performed by a main processor that manages trunk trunk lines. Thus, the main processor functioning as the SCCP 20D has a database of subprocessors. In addition, the TCAP 20E and the INAP 20F are provided in the intelligent network system. Next, the process of routing a specific message to MTP level 3 (20C) in an intelligent network system will be described.

2 is a process block diagram and an inter-process signal flow diagram of a signal processing apparatus of an intelligent network system and a switching system according to the prior art. Hereinafter, the process configuration of the intelligent network system and the switching system and the routing of signals will be described in detail.

First, processes operating in a processor performing a function of the SCCP 20D and processes operating in the MTP layer 3 20C of a lower processor performing signal processing will be described. The RRC 120 is a process that operates in the main processor managing the relay line in the switching system, and is responsible for routing to each device. In addition, the INM 130 checks the state of the main processor and the state information of each message handler (MH) 140A, 140B, ..., 140N and informs the TCAP 20E. In addition, the plurality of MHs 140A, 140B, ..., 140N are mounted in each subprocessor, which is a device that performs signal processing, to process a message received from the TCAP 20E or to process a message received from the TCAP 20E. do. In addition, since a plurality of intelligent network systems are connected to one switching system, a single intelligent network system is connected to a plurality of switching systems, or a plurality of switching systems are connected to a plurality of intelligent network systems, the IPC server 110 between the switching system and the intelligent network system. Is connected via).

Next, the process of transmitting a message from the TCAP 20E to a specific MH, for example, the MH 140N by the conventional technology, will be described. First, if there is a request for message delivery from the INAP 20F to the TCAP 20E, the message is received and output to the RRC 120 through the IPC server 110. The RRC 120 then receives a destination-specific code (hereinafter referred to as DPC) at the destination along with the message. The RRC 120 refers to the routing table in which the INM 130 collects state information of each of the MHs 140A, 140B, and 140N, and stores the information in a database, to the MH 140N of the lower processor corresponding to the destination. Will output the message data.

As described above, the message delivered from the TCAP 20E is delivered to the RRC 120, and the RRC 120 outputs the message to the corresponding MH. Therefore, since the message is not directly transmitted from the TCAP 20E to the MH but is transmitted through the RRC 120, the load increases in the switching system and there is a problem that the efficiency is also lowered.

In addition, two cases in which a message is directly transmitted from the TCAP 20E to the MH will be described. Firstly, if there is a request for message delivery from the INAP 20F, the TCAP 20E sequentially connects with the MH to find the MH required for the delivery of a specific message through the IPC server 110, and the MH for which message delivery is required. Check for authorization. If the MH does not require delivery of the message as a result of the check, a process of accessing and checking the next MH is performed. If the MH is required to deliver the message, the message is transmitted. Secondly, when a message is required to be transmitted from the INAP 20F, the TCAP 20E transmits the message to the MH of one of the signal processing devices through the IPC server 110. Then, the signal processing device receives the message and checks whether it is a message sent to the user and processes the message if it is sent to the user, and if the message is not sent to the user, performs a rerouting and delivers the message to the corresponding MH. .

As described above, the first method of sequential access and the second method of outputting and processing a message to one of the various signal processing devices of the switching system also cannot be said that routing is performed, and also the load of the switching system. Will not be reduced.

As described above, when a message is transmitted from the TCAP of the intelligent network system to the MH of the switching system, the message cannot be delivered directly. Therefore, the load inside the exchange system increases, and there is a problem that routing is not made.

Accordingly, an object of the present invention is to provide a routing method that can efficiently transmit messages and signals between a TCAP of an intelligent network system and an MH of an exchange system and reduce unnecessary signals to reduce the load of the exchange system.

Another object of the present invention is to provide a method for processing data between devices during initialization of an intelligent network system to deliver an accurate message from the TCAP of the intelligent network system to the MH of the switching system.

1 is a diagram illustrating the configuration of an OSI 7 layer and a layer configuration of a No. 7 signal processing signaling system;

2 is a process block diagram and an inter-process signal flow diagram of a signal processing apparatus of an intelligent network system and a switching system according to the prior art;

3 is a process block diagram and an inter-process signal flow diagram of a signal processing apparatus of an intelligent network system and a switching system according to an embodiment of the present invention;

4 is a control flowchart of initialization of a TCAP according to the present invention;

5 is a control flowchart when data is received or routed according to a state change of an exchange system while performing an intelligent network service in a TCAP according to the present invention;

6 is a signal flow diagram at the time of initialization between the intelligent network system and each device of the switching system.

The routing method of the present invention for achieving the above objects is a routing method from a TCAP of an intelligent network system having a database for routing to a signal processing device of an exchange system, to a signal processing device of an exchange system. A step of checking whether the message transmission signal from the INP to the signal processing device is received as a GT value, and when the test result is received as a GT value, the GT table and the TT table of the database. Routing through the router, forwarding the message to the signal processing device determined by the routing, and receiving a status management message from the processor of the SCCP layer of the switching system to the INAP. And outputting the database according to the received state management message. The bags feature.

The data processing method at the time of initialization of the present invention for achieving the above objects is a data storage method for routing from the TCAP to the signal processing device at the time of initialization of the intelligent network system, and the signal from INAP Outputting a status information request signal to a processor of an SCCP layer of a switching system when a point information request signal is received; receiving a response signal and detection point information from a processor of the SCCP layer; Storing received detection point information in a buffer and outputting it to the INAP; receiving signal point address data from a processor of the SCCP layer; And a signal processing field corresponding to an MTP level 3 of the exchange system after forwarding to the INAP. Outputting a raw state information request signal, an SS signal point state, an SP signal point state signal, a GT translation table, and an ALTI translation table from the signal processing apparatus. Storing it in a memory for routing upon reception and outputting an end response signal to the signal processing device upon receiving the signal point data end signal from the signal processing device.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. The same parts also use the same reference numerals, although shown in the other figures.

3 is a process block diagram and an inter-process signal flow diagram of a signal processing apparatus of an intelligent network system and a switching system according to an exemplary embodiment of the present invention. Hereinafter, the operation of the TCAP 20E and the MHs 140A, 140B, ..., 140N of the intelligent network system will be described in detail with reference to FIG. 3.

The INAP 20F requests the output of the message to the TCAP 20E when there is a message to be output to the data processing apparatus, and receives initialization data from the TCAP 20E and stores it in the database. The TCAP 20E receives initialization data from the INM 130 upon initialization and stores it as a table for routing according to the present invention. In addition, when there is a request for data transmission from the INAP 20E to the signal processing device, the TCAP 20E searches for the corresponding signal processing device with reference to the stored routing table, and transmits the MHs 140A, 140B, through the IPC server 110. ..., 140N) delivers the message to the corresponding MH. The INM 130 checks each of the MHs 140A, 140B, ..., 140N at the time of board initialization and reset, and outputs status information to the TCAP 20E. The RRC 120 performs routing to other devices except MH, which is a process driven by the signal processing device of the switching system.

4 is a control flowchart of initialization of a TCAP according to the present invention. Hereinafter, a control flow performed at initialization in a TCAP according to the present invention will be described in detail with reference to FIGS. 3 to 4.

After performing the initialization operation, the TCAP 20E maintains the standby state at step 200 and proceeds to step 202 to check whether a signaling point (SP) information request signal is received from the INAP 20F. do. When the TCAP 20E receives the request signal for the signal point information in step 202, the process proceeds to step 204, where the INM 130 is a process operating in the main processor of the switching system through the IPC server 110. Outputs a status information request signal. In step 206, it is checked whether a response signal is received from the INM 130. When the response signal is received from the INM 130, the TCAP 20E proceeds to step 208 to check whether the data of the detection point number is received from the INM 130. At this time, the number of detection points received from the INM 130 is data according to the number of detection points. The TCAP 20E waits until the data according to the detection point number received from the INM 130 is received in step 208, and proceeds to step 210 when the data according to the DP number is received.

The TCAP 20E stores the DP number in a buffer provided according to the present invention and outputs it to the INAP 20F. That is, the TCAP 20E stores the data of each detection point in a predetermined memory at the time of initialization in the present invention for routing. The TCAP 20E proceeds to step 212 to check whether a signal according to the signal point address is received. When the signal point address signal is received, the TCAP 20E proceeds to step 214 to store the received data as a table of the signal point addresses in a predetermined memory provided for the routing, and transmits the received data to the INAP 20F. do. In this case, the TCAP 20E may be configured to table and store the data for the MHs 140A, 140B, ..., 140N, instead of storing all the received data.

In this case, since the TCAP 20E may take a long time to table the signal point data when the amount of data is large, in such a case, the received data is temporarily stored in a buffer and then transmitted to the INAP 20F first, and then the table is stored in the memory. It can also be configured to store it. This can be implemented differently depending on the amount of data received and the processing speed of the data. The generated table is composed of a routing service method by the ITU-T Recommendation and TRAVIS RUSSELL's Signaling System # 7. In summary, first, there is a Global Title Tracslation (GT) method of translating and finding a constant digit value to find a destination point. The second way is to use point codes, and the third way is to use point codes, subsystem numbers and GTs. Typically, routing is accomplished by the three methods described above in an exchange system, and all of these methods can be used. Therefore, the TCAP 20E also stores all the above tables in memory for routing. Therefore, the tables configured according to the above are GT tables, TT tables, and RTG tables. In addition, ISPs and ISSPs are generated and stored.

If the TCAP 20E proceeds to step 216, the TCAP 20E passes through the IPC server 110 to the MHs 140A, 140B, ..., 140N of the respective signal processing apparatuses according to the table generated in the step 214. Outputs a signal requesting information Then, each of the MHs 140A, 140B, ..., 140N outputs status information. Then, in step 218, the TCAP 20E receives data according to signal point states received from each of the MHs 140A, 140B, ..., 140N, and stores the data in the memory, and in step 210, the signal point translation table. Receive and store in the memory. As such, when the TCAP 20E receives the signal point state and the signal point translation table from each of the MHs 140A, 140B, ..., 140N, the TCAP 20E proceeds to step 222 to check whether an end signal is received. When the end signal is received, the TCAP 20E outputs a response signal corresponding to the end signal to each signal processing device, and proceeds to step 224 to perform a service mode. By receiving and storing data for routing in the TCAP 20E in this manner, routing is possible directly without passing through other devices in the switching system.

5 is a control flowchart of data reception or routing according to a state change of an exchange system during execution of an intelligent network service in a TCAP according to the present invention. Hereinafter, a control process performed in the TCAP 20E will be described in detail with reference to FIG. 5.

The TCAP 20E performs an operation according to service execution in step 230. The TCAP 20E performs a service, and proceeds to step 232 to check whether a state management message is received. The TCAP 20E proceeds to step 234 when the status management message is received, and proceeds to step 238 when the status management message is not received. First, in step 234, the TCAP 20E receives the state management message received from the INM 130 of the SCCP 20D and updates the table in the memory. That is, the data received from the INM 130 becomes a message according to the state of the signal processing device of the switching system is changed or the state of the main processor. That is, the signal processing apparatus transitions to the inoperable state or transitions to the operation state, or the main processor transitions to the operation state. Thus, the TCAP 20E forwards the status management message to the INAP 20F.

In contrast, when proceeding to step 238, the TCAP 20E checks whether a message transfer request signal is received from the INAP 20F to a specific MH. When the message transfer request signal is received, the TCAP 20E proceeds to step 240, and when the message transfer request signal is not received, proceeds to step 230 to perform an operation according to a service. In step 240, the TCAP 20E checks whether the message transfer request signal is a signal requiring routing to a GT value. The TCAP 20E proceeds to step 242 if routing to the GT value is required and proceeds to step 244 if routing to the GT value is not required. If it is required to route to GT value first, the TCAP 20E proceeds to step 242 to search for a signal processing device of the corresponding MH by referring to the GT table and the TT table of the memory provided for the routing. do. In contrast, when the TCAP 20E proceeds to step 244, the TCAP 20E finds a signal processing device of the corresponding MH by referring to the RTG table and performs routing. When the routing is completed in step 242 or step 244, the TCAP 20E proceeds to step 246 and transmits a message to the signal processing apparatus in which the corresponding MH exists as routed. This allows messages to be delivered via routing from the TCAP 20E to the signal processing device of the switching system.

6 is a signal flow diagram at the time of initialization between the intelligent network system and each device of the switching system. Hereinafter, the signal flow during initialization of the intelligent network system and the switching system according to the present invention will be described in detail with reference to FIGS. 3 to 5.

Upon initialization, the INAP 20F outputs a signal point information request signal TC_StateReq to the TCAP 20E in step 300. The TCAP 20E receives this and outputs a signal point state information request signal NstateReq to the INM 130 of the switching system in step 302. Accordingly, the INM 130 outputs the state response signal NStateAck to the TCAP 20E in step 304 in response to the signal point state information request signal reception. At this time, the status response signal includes the address data NoofDP of the signal point. That is, data about the number of signal points is included and transmitted. Therefore, the TCAP 20E stores it in a predetermined memory as described with reference to FIG. 4. When the TCAP 20E receives the status response signal, the TCAP 20E transmits it to the INAP 20F in step 306. In step 308, the INM 130 outputs the address data DPaccDtrp of the signal point to the TCAP 20E according to its database. When all data is transmitted, the INM 20F proceeds to step 310 and outputs a signal point data end signal DPaccDtRP_End. Therefore, upon receiving the address of the signal point, the TCAP 20E stores the table in a predetermined memory according to the amount of data and the processing speed of the data, as described above with reference to FIG. After performing step), the table is stored in memory.

In the present embodiment, the signal point data is first output to the INAP 20F, and then the TCAP 20E is stored in a table in a predetermined memory and stored. When the data end signal is received, the TCAP 20E proceeds to step 312 and outputs signal point address data to the INAP 20F. After all data is transferred, it is stored in a table. The TCAP 20E outputs a status information request signal accDPInfoReq_i2u to each signal processing device corresponding to the MTP level 3 (20C) of the switching system when all of these table operations are completed.

When the MTP level 3 (20C) receives the status information request signal, the MTP level 3 (20C) outputs the SS signal point status signal SS_Res_D2O to the TCAP 20E in step 316. In operation 318, the SP signal point status signal SP_Res_D2O is output to the TCAP 20E. In addition, MTP level 3 (20C) outputs the GT translation table signal (GTBL_ResD2O) to the TCAP 20E to the TCAP 20E, and proceeds to step 322 to output the RTG translation table signal (RTG_Res_D2O) to the TCAP 20E. do. When all data is output from the MTP level 3 (20C) of each signal processing device in this way, the MTP level 3 (20C) proceeds to step 324 to output the signal point data end signal (DPInfo_End_U2I).

Accordingly, the TCAP 20E stores the data received from the MTP level 3 20C in the memory. If the TCAP 20E receives the signal point data end signal of step 324, the TCAP 20E proceeds to step 326 to output the signal point end response signal DPInfo_EndAck_U2I to the MTP level 3 (20E). In the above-described process, data can be received to complete a routing table, and a message can be transmitted according to the routing table. If the processor corresponding to the SCCP 20D of the switching system is activated, the INM 130 proceeds to step 328 and outputs the main processor activation signal NState_Ind to the TCAP 20E. Accordingly, the TCAP 20E outputs an activation signal to the INAP 20F. It then updates the data in its memory. Alternatively, the TCAP 20E may first update the data and then output the signal according to the main processor activation to the INAP 20F. The INM 130 detects when the state of the signal processing device of the switching system changes. Therefore, the INM 130 outputs the signal point state change signal NPCState_Ind to the TCAP 20E in step 332. The TCAP 20E then outputs the signal point state change signal to the INAP 20F and changes the routing tables of the memory. Through this, even if the status of the exchange system changes, the status change can be checked, so that the routing can be performed correctly by changing the data in the routing table.

As described above, the internal load of the switching system is reduced by managing the routing table of devices related to the routing of the switching system in the TCAP of the intelligent network system.

Claims (3)

In the data storage method for routing from the TCAP (TCAP) to the signal processing device in the initialization of the intelligent network system, Outputting a status information request signal to a processor of an SCCP layer of an exchange system when a signal point information request signal is received from an INP; Receiving a response signal and detection point information from a processor of the SCCP layer; Storing the received detection point information in a buffer and outputting the information to the INAP; Receiving the signal point address data from the processor of the SCCP layer, storing the table as a database for routing, storing the signal point address data, and delivering the same to the INAP; Outputting a status information request signal to a signal processing device corresponding to an MTP level 3 of the exchange system after transferring to the INAP; When the SS signal point state, the SP signal point state signal, the GT translation table and the RTG translation table are received from the signal processing device, they are stored in the memory as a database for routing. To do that, And outputting an end response signal to the signal processing device upon receiving the signal point data end signal from the signal processing device. In a routing method from a TCAP of an intelligent network system having a database for routing to a signal processing device of a switching system, to a signal processing device of a switching system, Checking whether the signal is received as a GT value when a signal requesting delivery of a message is received from an INP to the signal processing apparatus; Routing through the GT table and the TT table stored in the database when the check result is a GT value, And routing the message to the signal processing device of the intelligent network system, wherein the message is transmitted to the signal processing device determined by the routing. The method of claim 2, Receiving a status management message from a processor of an SCCP layer of the switching system and outputting the status management message to the INAP; And updating the database according to the received state management message.