KR0150082B1 - Automatic production method for test device & test procedure of intelligent service exchanger - Google Patents

Abstract

The present invention relates to a test apparatus for efficient test automation of a next-generation intelligent network service exchanger and a method for automatically generating a test procedure in the test apparatus, wherein the test apparatus of the intelligent network service exchanger generates a test procedure by dualizing input access authority. Automatic generating means (11); Intelligent network service switching means (14) for performing commands from the service control system (SCP) in addition to the call processing function and acting as a relay; Test management means (12) for instructing a subscriber's test procedure according to the test procedure contained in the test procedure; Subscriber call generating means (13) for generating a series of calls to match the message from the test management means (12) to the intelligent network service switching means (AIN SSP) 14; SS (No. 7) message generating means 15 for converting ASCII code messages and SS No. 7 messages, characterized in that the test procedure automatic generation method applied to the test apparatus of the intelligent network service exchange Analyzing the output results of the SIBs, and then determining whether there is a user request at the network designer level; A second step of reconstructing partial information flow and generating all reachable paths according to a user requirement of the network designer level; Performing a final path of all loop paths and performing full path generation, event processing, and analysis; A fourth step of converting a message to ASN.1 format by processing an event according to an event occurrence place or monitoring according to a monitoring target can be performed more efficiently. It has an effect.

Description

Automatic generation of test equipment and test procedure of intelligent network service exchange

1 is an overall structure diagram of a test apparatus of an intelligent network service switchboard according to the present invention.

2 is a detailed structural diagram of the test procedure automatic generation module of FIG.

3a to 3b are flow charts for automatically generating test procedures according to the present invention.

* Explanation of symbols for main parts of the drawings

11: test procedure automatic generation module 12: test management unit

13 subscriber call generator 14 intelligent network service switch

15: SS No. 7 Message Generator 21: Service Selector

22: test procedure generation unit 23: event processing unit

24 monitor unit 25 ASN.1 conversion unit

The present invention relates to a test apparatus for efficient test automation of a next-generation intelligent network service exchanger and a method for automatically generating test procedures in the test apparatus.

Looking at the conventional exchanger development process, most of the tests were performed by experts and were not systematic in test environment or test procedure generation.

In addition, service exchangers in next-generation intelligent networks that meet the needs of various services with the emergence of intelligent networks, interact with various network elements such as Service Control Point (SCP) and Intelligent Peripheral (IP). It is to provide service using distributed processing technique.

However, in developing these network elements, each system is developed independently in the absence of other network elements, and as a result, tests of each developed system must be performed independently. Testing should also be done independently of these network elements and should take into account distributed processing with other network elements that will interact with next-generation intelligent network service exchanges.

Accordingly, an object of the present invention is to provide a test apparatus and a test procedure automatic generation method of a next-generation intelligent network service exchanger having multiple tester levels.

In order to achieve the above object, the test apparatus of the intelligent network service exchange of the present invention comprises a test procedure composed of all possible test procedures that can occur in the received service by input authority being dualized at the service architect level and the network designer level. Automatic generating means for generating test procedures; In addition to the call processing function, it recognizes the intelligent network service call and notifies the service control system (SCP) and executes commands from the sub control system (SCP). Intelligent network service switching means serving as a risk relay; Test management means for converting the related Abstract Syntax Notation 1 (ASN.1) format to ASCII code to be delivered to the AIN SSP according to the test procedure described in the test procedure; Subscriber call generating means for generating a series of calls for inputting a message written in ASCII code for instructing subscriber-side operation from the test management means to fit into an AIN SSP; SS No.7 message generating means for converting ASCII code message and SS No.7 message in ASN.1 format between the test management means and the AIN SSP. It characterized by having a.

In addition, the method for automatically generating a test procedure applied to the test apparatus of the intelligent network service exchanger selects an input intelligent network service number, selects a parameter value of the SIB, analyzes an output result of the SIBs, and then a user request at the network designer level is applied. Determining whether there is a first step; A second step of generating all reachable paths when there is no user request of the network designer level, and generating all reachable paths by reconstructing a partial information flow if required; A third step of determining whether a loop path exists and performing termination path paths of all loop paths, and generating a complete path, processing an event, and analyzing the loop path; And a fourth step of determining whether or not to monitor the event and processing the event according to the event occurrence place or monitoring according to the monitoring target to convert the message into the ASN.1 format.

The test automation environment, which is a test device of the intelligent network service exchange according to the present invention, is composed of a test procedure automatic generation module, a test management unit, a subscriber call generator, an SS No.7 message generator, and a next-generation intelligent network service exchange that is a test target, and automatically generates a test procedure. The method considered the intelligent network service as a chain composed of 14 SIB (Service Independent Building Block) objects recommended by ITU-T, allowing the tester to flexibly configure and input the intelligent network service under test. It will generate all possible test procedures consisting of the external inter-network messages of the exchange and the operation instruction messages of the subscriber.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

1 is an overall structure diagram of a test apparatus of a next-generation intelligent network service exchange system according to the present invention, 10 is a computer device, 11 is a test sequence script generator, 12 is a test manager, 13 denotes a subscriber call generator, 14 denotes a next-generation intelligent network service switch (AIN SSP), and 15 denotes an SS No. 7 message generator.

As shown in the figure, the test procedure automatic generation module 11 receives a service script file describing a service as a chain of service independent building blocks (SIBs), and includes a procedure consisting of all possible test procedures that can occur in the service. As a module to create, the input is divided into service designer level and network designer level so that input access rights are dualized, and the procedure is external network-to-network message (TCAP message, Q, 931 message) of AIN SSP (14). And subscriber action indication messages and operator messages are shown in Abstract Syntax Notation 1 (ASN.1) format.

The test management unit 12 performs the next generation intelligent network service exchanger (AIN SSP) 14 through the subscriber call generator 13 according to the test procedure contained in the test procedure in the ASN.1 format received from the test procedure automatic generation module 11. SS No.7 message generator to instruct test procedures of subscribers in internal side or to deliver AIN SSP 14 to next-generation intelligent network service switch (SIN) by service control system (SCP) or intelligent peripheral device (IP). The message is transmitted via SS No.7 message via (15).

The SS No. 7 messages transmitted to the external network element by the next generation intelligent network service exchange (AIN SSP) 14 are passed through the SS No. 7 message generator 15 to the ASN. Converted to ASCII code in one format.

In addition, the test manager 12 applies an input to the next-generation intelligent network service exchanger (AIN SSP) 14 based on an input message and an expected output message of the next-generation intelligent network service exchanger (AIN SSP) 14 contained in the test procedure. The next generation intelligent network service exchange (AIN SSP) 14 is tested by comparing the output generated from the next generation intelligent network service exchange (AIN SSP) 14.

In this environment, SS No. 7 MGTS (Message Generator / Traffic Simulator) equipment was selected as the message generator 15. The MGTS converts an ASCII code message of ASN.1 format from the test management unit 12 into an SS No. 7 message. The test management unit converts the SS No. 7 message from the next-generation intelligent network service exchange (AIN SSP) 14 or the SS No. 7 message from the next-generation intelligent network service exchange (AIN SSP) 14 to the ASCII code of the ASN.1 format. It functions to deliver to (12).

The subscriber call generator 13 selects an AM2-A device of Ameritech and sends a message written in ASCII code to instruct the subscriber side operation from the test management unit AIN SSP. (14) generates a series of calls for input, the test management unit 12 receives a response signal for the input instruction through the subscriber call generator 13 AM2-A.

The intelligent network service exchanger 14, which is a test target system, recognizes the intelligent network service call in addition to the call processing function, notifies the service control system (SCP) and commands from the service control system (SCP) through the SS No, 7 network. It plays a role of relaying through SS No.7 network and Integrated Service Digital Network / Primary Rate (ISDN) for mutual message transfer between Service Control System (SCP) and Intelligent Peripheral (IP).

The functional entity in the intelligent network service exchange (AIN SSP) 14 includes a Call Control Function (CCF) and a Service Switching function (SSF), and has a Call Control Agent Function (CCAF) in the case of a domestic intelligent network service exchange (AIN SSP). . In such a test automation environment, a key function is the test procedure automatic generation module 11.

2 is a detailed structural diagram of the test procedure automatic generation module of FIG. 1, 21 is a service selector, 22 is a test procedure generator, 221 is a reachable path generator, 222 is a full path generator, 23 is an event processor, and 231 Is SSP event processing unit, 232 is SCP event processing unit, 233 is IP event processing unit, 24 is monitor unit, 241 is subscriber monitor unit, 242 is Basic Call State Model (BCSM) monitor unit, and 243 is Feature State Model (FSM) monitor unit And 25 denote an ASN.1 conversion unit, respectively.

As shown in the figure, the service selector 21 accepts a service script file composed of a chain of SIBs, and variously accepts input parameters of respective SIBs through a screen from a user. A user at the network designer level can reconfigure partial information flows consisting only of network messages according to the output results of SIBs constituting a service logic program (SLP) according to network elements.

The test procedure generator 22 generates the end paths consisting of the node and the branch by using the reachability path generator 221 which extracts the reachable paths and the results obtained therefrom, and then generates partial information flows of the SIB corresponding to the node. After generating the considered external manganese messages, it can be divided into a full path generation unit 222 which is composed of the external manganese messages considering the partial information flows of the SIB corresponding to the node, that is, extracts a complete path composed of all possible information flows. .

The service chain is composed of nodes and branches. A node corresponds to a specific SIB and has a result of the corresponding SIB as a branch value. The reachability path generation unit 221 indicates nodes representing the SIB and execution result values. The SIB connection chain described in the service logic program (SLP) consisting of branches having a structure is reconfigured into a reachability tree to pass through the service chain.

In addition, a longitudinal path is generated such that the reachable path obtained by the reachable path generation unit 221 passes through all cases. In this case, all the termination paths are generated using the reachability paths obtained by assuming that the path forming the loop passes only once.

The end paths thus obtained and the partial information flows in the SIB corresponding to the node can be used to find the full paths, which are all possible information flows consisting only of external network messages.

The event processor 23 receives an external manganese message (event: EVENT) sent from the test procedure generator 22 and determines which network element the event is generated from. The SSP event processor 231 and SCP event processor are submodules. In step 232, the IP event processing unit 233 sends the corresponding processing unit, and the submodule calls the ASN.1 conversion unit 25 to convert the received event into the ASN.1 format.

In addition, the subscriber monitor 241, the FSM monitor 242, and the BCSM monitor 243 of the monitor unit 24 are selectively called according to the type of event, and the subscriber's operation instruction and intelligent network service switch (AIN SSP) ( 14) to monitor the change of state.

The monitor unit 24 includes an FSM monitor unit 243 and a BSCM monitor unit 242 for obtaining operation information on a state change of an intelligent network service exchange (AIN SSP) 14, and a subscriber unit for instructing a subscriber's operation. There is a monitor 241, the role of each monitor is as follows.

The FSM monitor unit 243 changes the leg state by referring to the state of the leg currently managed and the leg state change information indicated by the event processor, and sends a corresponding message to notify the operator. Call the ASN.1 conversion unit 25, convert the message into the ASN.1 format, and output the message to the script file.

The BCSM monitor unit 242 changes the state of the BCSM by referring to the BCSM state currently managed and the BCSM state change information indicated by the event processing unit 23, and creates a corresponding message to notify the operator to create an ASN.1 conversion unit. After calling (25), the message is converted to ASN.1 format and output to the script file.

The subscriber monitor 241 calls the ASN.1 conversion unit 25 so as to perform the operations of all subscribers instructed by the event processing unit 23 and to make related messages and output them in a script file in ASN.1 format. .

In this case, the ASN.1 conversion unit 25 is called from the event processing unit 23 or the monitor unit 24 to convert each event into the ASN.1 format.

3A to 3B are flowcharts for automatically generating a test procedure according to the present invention, in which an intelligent network service number is selected (301), a parameter value of an SIB is selected (302), and an output result of the SIBs is analyzed (303).

Then, it is determined whether there is a user request of the network designer level (304), and if there is no request, all reachable paths are generated (306), if there is a request, the partial information flow is reconstructed (305), and all reachable paths are generated. (306).

When all reachable paths are generated, it is determined whether there is a loop path (307), and if there is a loop path, that is, if a node with an end node number of the loop path exists in the end path, the path after the node is first found in the end path. Inserts in place of the end node of the loop path to create a new end path (308), then performs end pathing of all loop paths (308), then creates a complete path, performs event processing and analysis (309), and if there is no loop path The complete path is immediately generated and event processing and analysis are performed (309).

If it is not monitored (310), if not monitored, depending on the event occurs in one of the SSP event processing unit 231, SCP event processing unit 232, IP event processing unit 233 (312, 313, 314), the message is converted into the ASN.1 format (319), and when monitored, it is processed by one of the subscriber monitor 241, BCSM monitor 242, and FSM monitor 243 depending on the target of the monitor (316,317,318). In step 319, the message is converted into the ASN.1 format.

As described above, according to the present invention, in order to meet the demands of general users for various future communication services in the future, in accordance with the trend that many researches on the intelligence of communication networks are actively conducted in Korea, the production of next generation intelligent network service exchanger In addition, there is an effect that can more efficiently test the service exchange to be performed.

Claims (10)

Test procedure auto-generation means (11) for generating input of a test procedure consisting of all possible test procedures that can occur in the received service by input authority being dualized at the service architect level and the network designer level; In addition to the call processing function, it recognizes the intelligent network service call and notifies the service control system (SCP) and executes commands from the service control system (SCP). Intelligent network service exchange means (14) serving as a risk relay; Test management means (12) for converting an associated Abstract Syntax Notation 1 (ASN.1) format to an ASCII code to be delivered to the AIN SSP 14 according to the test procedure contained in the test procedure; Subscriber call that generates a series of calls for inputting a message written in ASCII code for instructing the subscriber side operation from the test management means 12 in accordance with the AIN SSP 14 Generating means 13; The SS No. 7 message generating means 15 for converting ASCII codes and SS No. 7 messages between the test management means 12 and the AIN SSP 14; The testing apparatus of the intelligent network service exchange. The method according to claim 1, wherein the test procedure automatic generation means (11) accepts the service as a service script file depicting the chain as a chain of Service Independent Building Blocks (SIBs), and input parameters of each SIB are varied from the user through a screen. A service selector 21 for accepting; A test procedure generator 22 for extracting reachable paths from the output of the service selector 21 and extracting a complete path composed of all possible information flows; An event processing unit (23) for receiving and receiving external manganese messages (events: EVENT) sent from the test procedure generation unit (22) to determine and process in which network element the events are generated; A monitor unit 24 for monitoring a state of operation of a subscriber's operation instruction and intelligent network service exchange means (AIN SSP) 14; And an ASN.1 conversion unit (25) which is called from the event processing unit (23) or the monitor unit (24) and converts each event into an ASN.1 format. The method of claim 2, the test procedure generation unit 22, Reachable path generation unit for extracting reachable paths; And a complete path generation unit (222) for extracting a complete path composed of all possible information flows using the results from the reachable path generation unit (221). The event processing unit 23 of claim 2, wherein the event processing unit 23 is a sub-module SSP (Service Swithing Point) event processing unit 231, SCP (Service Control Point) event processing unit 232, IP (Intelligent Periperal) event processing unit 233 Test apparatus of the intelligent network service exchange, characterized in that it comprises a). The leg of claim 2, wherein the monitor unit 24 refers to the state of a leg currently being managed and the leg state change information instructed by the event processor 23. A Future State Model (FSM) monitor 243 for changing a state and outputting a corresponding message to notify an operator; A BCSM monitor unit for changing the state of the BCSM and outputting a corresponding message to be notified to the operator by referring to the BCSM (Basic Call state Model) state currently managed and the BCSM state change information indicated by the event processor 23 ( 242); And a subscriber monitor (241) for performing the operation of all subscribers indicated by the event processor (23) and outputting a related message. According to claim 1, wherein the intelligent network service switching means 14 includes a Call Control Function (CCF) and a Service Switching Function (SSF), in the case of a local intelligent network service switching means (AIN SSP) Call Control Agent Function (CCAF) Test apparatus of the intelligent network service exchange, characterized in that having a). The intelligent network service switching means (AIN SSP) according to claim 1, wherein the test management means (12) is based on an input message and an expected output message of the intelligent network service switching means (AIN SSP) 14 contained in the test procedure. And testing the intelligent network service exchanger (AIN SSP) 14 by applying an input to (14) and comparing the output generated from the actual intelligent network service exchange means (AIN SSP). Testing of intelligent network service exchanger with automatic test procedure generation means 11, test management means 12, subscriber call generation means 13, intelligent network service exchange means 14, SS No. 7 message generating means 15 A method for automatically generating a test procedure applied to an apparatus, comprising: a first step of selecting an intelligent network service number to be input and selecting a parameter value of an SIB to analyze output results of the SIBs, and then determining whether there is a user request at the network designer level; A second step of generating all reachable paths when there is no user request of the network designer level, and generating all reachable paths by reconstructing a partial information flow if required; A third step of determining whether a loop path exists and performing termination path paths of all loop paths, and generating a complete path, processing an event, and analyzing the loop path; And a fourth step of determining whether or not to monitor the event and processing the event according to the event occurrence place, or monitoring the event according to the monitoring target and converting the message into the ASN.1 format. 9. The method of claim 8, wherein the third step comprises: a fifth step of determining whether a loop path exists by examining whether a node having an end node number of the loop path exists in the end path; A sixth step of generating a new termination path by inserting the path after the node is first found in the termination path in place of the termination node of the loop path if there is a loop path; And a seventh step of performing full path generation and event processing and analysis when the loop path is absent or the terminal path path of all loop paths is performed. The method of claim 8, wherein the fourth step comprises: a fifth step of determining whether to monitor; A sixth step of processing one of the SSP event processing unit, the SCP event processing unit, and the IP event processing unit according to the event occurrence place if not monitored; A seventh step of performing monitoring by one of the subscriber monitor unit, the BCSM monitor unit, and the FSM monitor unit according to the monitoring target; And an eighth step of converting the message into the ASN.1 format after performing the sixth to seventh steps.