KR100793422B1 - System and method for verifying a capability and a load of mobile communication system - Google Patents

Abstract

The present invention relates to a performance and load checking system and method of a mobile communication system capable of dynamically generating an additional service test call and a load test call for a mobile communication system and automatically testing the function and capacity of the mobile communication system. User interface screen and function to create a test scenario by combining a plurality of operations corresponding to each function, create a project by combining the scenarios, and query the monitoring and execution results of the created test scenario and test project. Providing a user interface unit; Set the test environment through the MMC interface with the additional equipment of the mobile communication system, manage the test scenario and test project information set through the user interface unit, instructs the operation to perform in the corresponding order according to the requested scenario and project, A system handler for collecting and performing statistical results of the execution and providing the result to the user interface; And a land that generates a location-registered virtual mobile terminal, provides a test call through an ISUP interface with a mobile switching center (MCS) of the mobile communication system according to an instruction from the system handler, and outputs the result of the execution to the system handler. Includes a call simulator.

Call simulator, virtual mobile terminal, ISUP, test scenario,

Description

System and method for verifying a capability and a load of mobile communication system

1 is a configuration diagram showing a performance and load inspection system of a mobile communication system according to a first embodiment of the present invention.

2 is a functional block diagram showing a detailed configuration of the land call simulator provided in the first embodiment of the present invention.

3 is a configuration diagram illustrating a performance and load inspection system of a mobile communication system according to a second embodiment of the present invention.

4 is a functional block diagram showing the configuration of a mobile call simulator provided in a second embodiment of the present invention.

5 is a diagram illustrating a mobile terminal control structure in a mobile call simulator according to a second embodiment of the present invention.

6 is a block diagram illustrating a multi-terminal support structure in the system according to the second embodiment of the present invention.

7 is a functional block diagram showing the configuration of the base station call simulator provided in the system according to the second embodiment of the present invention.

8 is a S / W modular structure diagram of the load and performance test system of the mobile communication system according to the present invention.

9 is a flowchart illustrating a method for checking the function and performance of a new exchange package in a mobile communication system according to the present invention.

10 is a flowchart showing an example of execution of a project for testing a voice call according to the present invention.

11 is a diagram illustrating a voice test call for each section that can be supported in the call simulation system according to the present invention.

12 is a diagram illustrating an SMS test call for each section that can be supported in the call simulation system according to the present invention.

FIG. 13 is a diagram illustrating an additional service test call for each section that can be supported in a call simulation system according to the present invention. FIG.

14A to 14I illustrate examples of a user interface screen provided in the call simulation system according to the present invention.

Explanation of symbols on the main parts of the drawings

10: call simulation system

11: user interface

12: System Handler

13: Mobile Call Simulator (MCS)

14: BSS Call Simulator (BSS)

15: Land Call Simulator (LCS)

The present invention relates to a performance and load checking system of a mobile communication system that can automatically test the functionality and capacity of the mobile communication system and, in addition, can support pre-verification of newly applied exchange packages.

The mobile communication system is developed to perform voice communication in a wireless environment, and stores information on a mobile switching center (MSC) and a mobile communication service subscriber that performs call exchange between multiple base station controllers (BSCs). Home Location Register, Authentication Center (AuC), Short Message Center (SMC) and Voice data, which provide subscriber data for mobile device origination, location registration, and incoming calls. Switching network unit performing inter-format conversion between packet data and performing routing function between mobile terminals, including IWF / PDSN (Inter Work Function / Packet Data Service Node) connecting wireless communication network and packet network, and mobile station (BSS: Base Transceiver System) which is directly connected to the base station and performs baseband signal processing, wired and wireless conversion, and wireless signal transmission and reception. And a base station controller (BSC) located between the base station (BSS) and the mobile switching center (MSC) to perform base station management and control. It consists of a wireless network unit that performs the operation, and the operation support unit to support the maintenance and operation of the mobile communication system, including the network management center, customer management and billing device (AAA).

In addition, as a supplementary service equipment, a voice mail system (VMS) and a value added system (VAS) that store caller's voice memos and provide them to the called party when the called party cannot answer the call. Include.

In the above configuration, the mobile switching center (MSC) processes this basic voice service and supplementary services, handles incoming / outgoing calls of subscribers, location registration procedures and handoff procedures, and interworking functions with other networks of the existing network. In this regard, the most important network configuration equipment in a mobile communication system.

On the other hand, in recent years, the mobile communication system not only provides a voice communication service but also expands its service area to additional services such as a text message service, a multimedia service, and a location inquiry service along with a data communication service. Services are being proposed.

In order to stably provide the newly proposed additional services as described above, it is desirable to prevent problems by verifying the functions and performance in advance under the on-site situation or similar situation. There is no means to perform the verification.

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above-mentioned conventional problems, and an object thereof is to dynamically generate an additional service test call and a load test call having scenarios for all sections of the mobile communication system, thereby enabling the function and capacity of the mobile communication system. The present invention provides a system and method for checking the performance and load of a mobile communication system that can be automatically tested.

In addition, another object of the present invention is to automatically verify the function and performance of the new exchange package to be applied to the mobile communication system, the performance of the mobile communication system capable of network problem verification and pre-functional test through the on-site situation reproduction And a load inspection system and method.

As a configuration means for implementing the above object, the present invention, by combining a plurality of operations corresponding to each function to create a test scenario, the combination of the scenarios to create a project, the test scenario and the test project A user interface unit which provides a user interface screen and a function for inquiring monitoring and execution results; Set up the test environment through the MMC (Man Machine Communication) interface with the additional equipment of the mobile communication system, manage the test scenario and test project information set through the user interface unit, operation in the corresponding order according to the requested scenario and project A system handler for instructing performance, collecting and performing statistical results of the performance, and providing the result to the user interface; And generating a location-registered virtual mobile terminal, performing a land call test of the virtual mobile terminal through an ISUP interface with a mobile switching center (MCS) of the mobile communication system according to an instruction from the system handler, and performing the system result. It provides a performance and load test system of the mobile communication system including; land call simulator outputting to the handler.

In addition, the performance and load checking system of the mobile communication system according to the present invention is connected to one or more mobile terminals and manages the information of the connected mobile terminals, while at least one mobile terminal is connected through the DM interface according to the instruction of the system handler. A mobile call simulator for performing call origination and reception of a test call and / or a location-registered virtual mobile terminal, and controlling the generated virtual mobile terminal to perform an operation directed by the system handler, It may further include a base station call simulator for transmitting and receiving voice, incoming and outgoing calls, DTMF, sound source through the exchange and the A-interface.

In addition, the present invention is a configuration means for providing the above-described object, the first means for providing a user with a list of operations performed in the land call simulator for simulating the land voice call origination call of the virtual mobile terminal with the mobile switchboard. step; A second step of selecting one or more operations provided by a user and setting up a test scenario consisting of a combination of one or more operations and a test project combining two or more of the test scenarios; A third step of instructing to perform a corresponding operation according to the set test scenario or test project; A fourth step of collecting a result of performing the indicated operation; And a fifth step of providing the collected performance result to a user.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the same reference numerals are used for parts having similar functions and functions throughout the drawings.

1 is a block diagram illustrating a first embodiment of a performance and load checking system of a mobile communication system according to the present invention.

Performance and load test system 10 of the mobile communication system according to the first embodiment of the present invention, the user of the test call type scenarios, capacity check scenarios and the setting of the combination project and the monitoring of the test call and capacity check And a user interface unit 11 providing a user interface screen and a function to perform a performance result and statistics inquiry, and setting a test environment by adjusting additional equipment of a mobile communication system, and through the user interface unit 11. It manages the information of the set test call and load test scenarios and the project in combination thereof, instructs operations in the corresponding order according to the requested scenarios and projects, collects and performs statistical results of the execution to the user interface unit 11. Providing a system handler 12 and operating as a virtual mobile terminal and a virtual base station. According to an instruction from the system handler 12, a land call test of a virtual mobile terminal is performed through an ISDN user part (ISP) interface with a mobile switching center (MCS) of the mobile communication system, and the result of the system is performed. It includes a land call simulator 15 that provides a handler 12.

The system handler 12 is connected to an additional device such as HLR / SCP / VAS / AuC / SMC / VMS through a TCP / IP based MMC (Man Machine Communication) interface, and the land call simulator 15 is mobile communication. It is connected to the mobile switching center (MSC) of the system through the ISUP / E1 interface.

More specifically, the user interface unit 11 of the call simulation system provides a test call scenario setting function to the user to configure various types of test scenarios, and provides execution and monitoring functions for the test call. It provides real-time monitoring and confirmation of running tests, and provides test call performance result inquiry and cause analysis function and statistical inquiry function related to test call to analyze test results after the test is completed and may occur when applying new additional services. It is possible to predict the problem, and to provide the trunk channel monitoring and channel listening function that the test is performed to check the channel status during the test. In addition, for operation and management of call simulation system, user registration and management, user history inquiry, system status / fault / load monitoring function, inquiry function such as fault history and statistics, and system information setting function are provided. can do. The user interface screen provided by the user interface unit 11 will be described in more detail below.

In addition, the system handler 12 sets a test environment of the mobile communication system indicated through the user interface unit 11 through an MMC interface with additional equipment such as HLR, SCP, VAS, AuC, SMC, VMS, and the like. In addition, the user manages the test scenario and test project information set by the user through the user interface unit 11, and when the test schedule is indicated, the corresponding scenario is read and instructs the land call simulator 15 to perform an operation. The test call is made according to the corresponding scenario, and the execution result is collected and provided to the user at the request of the user interface unit 11. At this time, the information managed by the system handler 12 includes a test execution result, a tracking log during the test execution, and statistical information of the completed test. In addition, the system handler 12 performs management, setting control, system state monitoring, and operation maintenance of the parameter information of the call simulation system for operation / maintenance of the call simulation system according to the present invention.

The land call simulator 15 is a call simulator that generates and controls a virtual test call by actually performing the operation indicated by the system handler 12. The land call simulator 15 interlocks with the mobile switching center (MSC) and ISUP, as if it were a land call simulator. (15) The mobile terminal is virtualized as if there is a mobile terminal registered below, and the voice call signal of the virtual mobile terminal is controlled to perform a land call test. In addition, the scenario for the additional service call is tested by generating and transmitting the DTMF and the sound source of the virtual mobile terminal. In addition, the land call simulator 15 may further provide a real-time log tracking function and an end-to-end path loss test function. The end-to-end path loss test is performed by sending a DTMF tone corresponding to a calling party and a called party at the calling party and checking whether the DTMF tone received at the receiving party matches the calling party and called party at the called party. do.

2 is a functional block diagram showing the internal structure of the land call simulator 15. The land call simulator 15 includes an ISUP processor 15a, a test call controller 15b, and a management information storage unit 15c. It includes.

The ISUP processing unit 15a provides an ISUP protocol for performing call control such as circuit switching, packet switched connection, identification of outgoing / incoming calls, and incoming call transmission for a virtual mobile terminal to exchange data with a mobile switching center (MSC). Support.

The test call control unit 15b designates a channel number and a channel group to be tested with the MSC through trunk group setting, and selects a virtual mobile terminal that corresponds 1: 1 with the designated channel number. It generates and controls the ISUP processor 15a to control test call processing and DTMF and sound source transmission and reception for the generated virtual mobile terminal. In this case, the test call controller 15b generates a load box call for capacity test of the switching system and the additional service system as well as a call-by-call voice call, and manages the processing result accordingly.

The basic control operation performed by the land call simulator 15 through the test call control unit 15b includes voice call origination processing, voice call incoming processing, voice call termination processing, DTMF transmission and reception processing, voice reproduction processing, and virtual terminal state information. Including one or more of an inquiry and a channel state information inquiry, a user can create a test scenario of a desired form by combining these basic control operations through the user interface unit 11.

The management information necessary for the operation of the test call control unit 15b is stored in the management information storage unit 15c, for example, trunk line information such as trunk channel and trunk group information, number 7, signal point, signal, and the like. Number.7 information such as link, signaling linkset, and ISUP SDN (ISDN User Part SubSystem Number), Mobile Identification Number (MIN), Device Serial Number (ESN), and Virtual Mobile Terminal The virtual mobile terminal information including one or more of the state information of the corresponding.

By the land call simulator 15 described above, the system is capable of call processing performance and capacity of a land line of a mobile communication system, that is, a section between a mobile switching center (MSC) and a section up to a mobile switching center (MSC) and additional service equipment. Can be tested.

3 is a diagram illustrating a performance and load test system of a mobile communication system according to a second embodiment of the present invention. The call simulation system according to the second embodiment includes all sections of the mobile communication system, that is, the mobile terminal 9. ), The section from the mobile terminal 9 to the base station controller (BSC), the section from the base station controller (BSC) to the base station controller (BSC), the base station controller (BSC) to the mobile switching center (MSC) It is possible to test the call processing performance and capacity for each section, from the mobile terminal 9, the base station controller (BSC) and the mobile switching center (MSC) to the supplementary service equipment, the configuration of the user described in the first embodiment In addition to the interface unit 11, the system handler 12, and the land call simulator 15, one or more mobile terminals 9 are controlled according to the instructions of the system handler 12 to process the test call. Mobile Create a virtual mobile terminal registered under the simulator 13 and / or the base station controller BCS, and control the generated virtual mobile terminal to perform the operation indicated by the system handler 12, And a base station call simulator 14 for transmitting / receiving originating / receiving calls, DTMF, and sound source to the mobile switching center (MCS).

In the call simulation system according to the second embodiment, the configuration and operation of the user interface 11, the system handler 12, and the land call simulator 15 are the same as in the first embodiment, and thus, the first Reference will be made to the description of the embodiments, and hereinafter, the mobile call simulator 13 and the base station call simulator 14 which are additional configurations will be described in more detail.

The mobile call simulator 13 checks the information setting and status of the mobile terminal 9 through a DM (Diagnostic Monitor) interface with the mobile terminal 9, and also makes a voice call / incoming call to the mobile terminal 9. In addition, the mobile terminal 9 is controlled to process an SMS call / incoming call, and the result of the execution and the log are received and provided to the system handler 12. In addition, for this processing, system configuration information such as terminal information and channel information of each mobile terminal 9 is set. The DM interface is for accessing internal resources of the mobile terminal 9 to diagnose or control the state of the mobile terminal, and related products are commercialized by various companies including Qualcomm.

4 is a functional block diagram showing the internal configuration of the mobile call simulator 13, the mobile call simulator 13 is connected to the mobile terminal 9, DM interface that supports to control the operation of the mobile terminal 9 A test for controlling the mobile terminals 9 so that a test call is generated and received by the mobile unit 9 connected through the DM interface processor 13a according to the processor 13a and the system handler 12. A call control section 13b and a management information storage section 13c for storing management information necessary for control of the test call control section 13b.

More specifically, the mobile call simulator 13 uses a diagnostic message in the Qualcomm DM interface to control the mobile terminal 9. That is, as shown in Figure 5, the test call control unit 13b of the mobile call simulator 13 is a control message for test call generation and processing through a Qualcomm DM interface, more specifically, a diagnostic message. The DM diagnostic message is encoded and transmitted in an Async-HDLC link layer frame, and the Async-HDLC link layer frame is configured to exchange with the mobile terminal 9 on a high speed RS-232C physical link. .

In addition, the SMS call control of the mobile terminal 9 in the mobile call simulator 13 may be performed using an AT extension command through IS-707A-Compliant Modem Mode extension, and an interface defined by each terminal standard ( For example, the EIF interface is used to send and receive SMS.

In addition, the mobile call simulator 13 may simultaneously control one or more mobile terminals 9 using the multi-port terminal server 13d. The multi-port terminal server 13d is a server having a plurality of ports to which a plurality of mobile terminals 9 can be connected. The multi-port terminal server 13d is connected to the mobile call simulator 13 via Ethernet, and is connected to the plurality of mobile terminals 9. Perform data exchange between mobile call simulators 13.

Through the above configuration, the test call control unit 13b of the mobile call simulator 13 controls the plurality of mobile terminals 9, in which the control process is driven by one thread per mobile terminal 9. In addition, the test call control unit 13b may not only control simple test call generation and processing, but also emulate a user keypad scenario to test additional services, such as a user directly pressing a keypad of the mobile terminal 9. To help.

The control operation provided by the mobile call simulator 13 through the above-described configuration includes a voice call origination request, a voice call call waiting state, a voice call progress inquiry, a button input request, a voice call termination request, an SMS call request, and an SMS reception wait. It may include one or more of the terminal status information query, the channel status information query, the user creates a test scenario by combining the above-described control operation through the user interface unit 11, the test call according to the created scenario The system handler 12 generates and processes the mobile call simulator 12 through a corresponding operator exchange.

In addition, the management information storage unit 13c of the mobile call simulator 13 stores configuration information and state information about a port connected to the mobile terminal 9 for generating and processing a test call, and connected to the port. Information and status information of the mobile terminal 9 is stored.

Fig. 7 is a functional block diagram showing the configuration of the base station call simulator 14 shown in Fig. 3, wherein the base station call simulator 14 includes an A-interface processing unit 14a, a test call control unit 14b, and management information. Storage 14c.

The A-interface processing unit 14a supports an A interface standard (IS-634) for controlling a test call of a virtual terminal registered in a base station controller (BSC) with a mobile switching center (MCS). It supports IS-634.1 and IS-634.4 for calls and SMS calls. More specifically, the physical layer uses the E1 interface, the transport layer uses SS7's MTP 2,3 and SCCP protocols, and the virtual among the BSAP protocol's Direct Transfer Application Part (DTAP) and Base Station Managemnet Application Part (BSMAP). It supports mobility management capable of supporting mobile terminals, call processing and additional services capable of controlling mobile originating and incoming voice calls and SMS calls, and radio resource management protocols.

The test call control unit 14b designates the number of channels to be controlled and the channel group through the trunk group setting between the mobile switching system and the MSC of the mobile communication system, and corresponds to the number of the designated channels 1: 1. Create a virtual mobile terminal. The virtual mobile terminal is assigned a mobile station identification number (MIN) and a device serial number (ESN), and assigned a unique system ID and network ID for each of the base station call simulator 14, the initial mobile terminal to the virtual mobile terminal Location registration takes place. Through this location registration, the base station call simulator 14 operates as if the mobile terminal is registered in the base station controller BSC. Then, the test call control unit 14b controls transmission and reception of test call processing, DTMF, and sound source through the location-registered virtual mobile terminal. At this time, the test call control unit 14b generates a load box call for capacity test of the switching system and the additional service system as well as the call-by-call voice call and the SMS call, and manages the processing result accordingly. The test call control process in the test call control unit 14b consists of one thread per virtual mobile terminal.

Basic control operations performed by the base station call simulator 14 through the test call control unit 14b include location registration processing, terminal authentication processing, voice call origination processing, voice call incoming processing, voice call termination processing, and call waiting. The user includes one or more of waiting, three-way call processing, DTMF transmission / reception processing, voice playback processing, SMS transmission processing, SMS reception processing, virtual terminal status information inquiry, and channel status information inquiry. The basic control operation may be combined through the user interface 11 to create a scenario for a test call.

The base station call simulator 14 provides a function of listening to a voice signal flowing on a channel of each call, and a function of testing end-to-end path loss, wherein end-to-end path loss test May be performed by transmitting a DTMF tone corresponding to the calling party and the called party from the calling party and checking whether the DTMF tone received at the receiving party matches the calling party and the called party of the called party.

Management information necessary for the operation of the test call control unit 14b is stored in the management information storage unit 14c, and management information stored in the management information storage unit 14c is relay line information such as trunk channel and trunk group information. And a No. 7 signal point, a signal link, a signal link set, and a No. 7 information including BSAP SSN, system ID, etc., and a virtual CDMA system comprising a virtual CDMA system ID, a network ID, a base station ID, a sector ID, and the like. The information corresponds to virtual mobile terminal information including at least one of a mobile identification number (MIN), a device serial number (ESN), and state information of the virtual mobile terminal.

By the above-described base station call simulator 14, the call simulation system of the present invention is characterized by the interval between the base station controller (BSC) of the mobile communication system and the interval from the base station controller (BSC) to the mobile switching center (MSC) or additional service equipment. Call processing performance and capacity can be tested.

In the above-described first and second embodiments, the system handler 12 requests a test call by scheduling a test scenario and a test project created through the user interface unit 11, and call-by-call. Test call and load test call control is performed, and test results collected through the call-by-call test call control are collected in real time in each type in an internal DB, and statistical processing is performed after the test is completed and stored in statistical data.

In addition, the system handler 12 may interface with the additional service equipment of the mobile communication system to the MMC so as to set the test environment in advance, and during the test by the aforementioned call simulators 13, 14 and 15, Trace logs from supplementary service equipment to help users monitor test progress.

8 is a diagram illustrating an internal software module configuration for controlling a test call related to performance and capacity testing of a mobile communication system in a call simulation system according to the present invention.

Referring to FIG. 8, the call simulators 13, 14, and 15 each have an outgoing call simulator 21 for controlling the processing of an outgoing test call, and an incoming call simulator 22 for controlling the handling of an incoming test call. The outgoing call simulator 21 and the incoming call simulator 22 control the signaling handlers 213 and 223 to receive an SMS related operation from the system handler 12 and to perform an SMS test call corresponding to the operation. A voice call agent that controls the signaling handlers 213 and 223 and the IVR handlers 214 and 224 to perform voice test calls according to an operation instruction from the system handler 12. 212 and 222, and a signal for performing call processing signal processing for the mobile terminal 9 according to the control from the SMS call agents 211 and 221 and the voice call agents 212 and 222. Handlers 213 and 223, IVR handlers 214 and 224 for interactive response (IVR) channel management and call channel control, DTMF transmission and reception, sound source playback, and end-to-end path loss test functions. ).

In addition, the system handler 12 is connected to the first DB 121 for storing test scenarios and project information created through the user interface unit 11 and the mobile call simulator 11 to perform a test. A second DB 122 storing terminal information and state information of (9), a third DB 123 storing information on additional service equipments of a mobile communication system connected to the system handler 12; A fourth DB 124 storing the test call execution result, a fifth DB 125 storing the statistical processing result of the test call execution results stored in the fourth DB 124, and the first DB 124. From the project scheduler 127 and the project scheduler 127 which poll the test project stored in the DB 121 periodically, read the test scenario of the project to execute or reserve the project, and trigger the test call for each scenario.Analyze the triggered scenario and instruct a detailed operation to the SMS / voice call agent 211/212 and 221/222, and receive a result from the call agent 211/212 and 221/222 to perform the next operation. The call controller 128 which controls and collects the result of each operation in the scenario and records them in the fourth DB 124, and receives a load box call from the project scheduler 127 to receive the mobile call simulator. The load test call controller 129 which controls the load test call by exchanging operations through interaction with the call agents 211/212 and 221/222 of 11) and receives the result and records the result in the fourth DB 124. And, the MMC interface handler 130 is provided with a mobile communication system for each of the additional service equipment to process the MMC interface with the corresponding additional equipment and to store the result of the execution, and the mobile call simulator 11 Log manager 131 for generating a real-time trace log (126) by filtering the performance log for the test call delivered from the test call, and stored in the fourth DB (124) when the test call for a given scenario is terminated The state manager 132 generates the statistics by adding up the results and records them in the fifth DB 125.

In addition to the configuration shown in FIG. 5, a system manager, an OMP daemon, an alarm manager, a system monitor, a statistics generator, and the like may be included for operation maintenance of the system.

The performance / load test procedure of the mobile communication system according to the above configuration is performed as shown in the flowchart of FIG. 9.

That is, when the user wants to test the performance and load of the mobile communication system using the system 10 according to the present invention (S600), the user of the system handler 12 provided through the user interface unit 11 From the list of scenarios stored in the first DB 121, a scenario matching a desired test is selected, or a desired scenario is created through a scenario creation function provided through the user interface unit 11 (S610 to S630).

In the above, one test scenario consists of a combination of basic control operations provided by each call simulator 13, 14, and 15, which generally corresponds to one test subject function. For example, a user may combine each operation to test a scenario of a mobile terminal section in a mobile terminal, a test scenario of a base station controller section in a mobile terminal, a test scenario of a mobile terminal to an additional service equipment, and a base station controller section in a base station controller. Various types of test scenarios can be prepared for each section, such as test scenarios.

The combination of the scenarios created as described above may generate a test project including a plurality of test functions (S640).

For the generated test project, both scheduled execution and immediate execution are possible (S650, S660), and when the scheduled execution, the reservation time can be set according to the test plan.

In addition, if a test project to be executed immediately or a test project reached at a scheduled time exists, a test is performed according to the scenario by reading a corresponding scenario (S670), and the system handler 12 will be described in more detail. The project scheduler 127 reads the scenario according to the setting of the corresponding project and triggers the call-by-call call controller 128 or the load test call controller 129 according to the test type, and the call-by-call call controller 128. And load test call controller 129 instructs call simulators 13, 14, and 15 corresponding operations according to the order of the scenarios, and the SMS call agent or voice call agent of the call simulators 13, 14, and 15 accordingly. When the originating test call and incoming call are controlled by controlling the signaling handler 213 or the IVR handler 214 to perform the operation instructed by (211 / 212,221 / 222). Handle hum calls.

In the above, when the test call is an outgoing call, the call is processed by the outgoing call simulator 21, and the incoming call is processed by the incoming call simulator 22, and when the test call is an SMS call, it is processed by the SMS call agents 211 and 221. In the case of a voice call, it is processed by the voice call agents 212 and 222.

When the test call instructed as described above is performed, when the call agent 211, 212, 221, 222 returns the execution result to the system handler 12, the system handler 12 stores the returned execution result in the fourth DB 124. In addition, the log information generated during the test call is received from the call simulators 13, 141 and 5, which are processed by the log manager 131 to generate the tracking log 126.

When the test is completed, the state manager 132 adds the test execution result stored in the fourth DB 124 to generate statistical data and store the statistical data in the fifth DB 125.

Performance results and statistical information stored in the fourth and fifth DBs 124 and the tracking log 126 generated by the log manager 131 are provided to the user through the user interface unit 11 (S690).

10 is a flowchart illustrating a specific process of performing a voice call test. When a user reserves a test project for a voice call through a user interface screen of an operation console, it is stored in the first DB 121 and is reserved. When the time is reached, the information of the reserved project is read by the project scheduler 127, and when corresponding scenario information is transferred to the call controller 128, the call controller 128 requests call origination according to the scenario. An operation to instruct a call origination to the outgoing call simulator 21 of the mobile call simulator 11 and to request a call waiting to the incoming call simulator (22). Thereby, the outgoing call simulator 21 controls the mobile terminal 9 designated for outgoing to originate a call, and transmits a call origination result to the call controller 128, whereby the outgoing call is transferred to a mobile exchanger ( MSC) is set up and delivered to the mobile terminal 9 set as the called party, and the incoming call simulator 22 waits for a call, and when the incoming call is transferred through the MSC, Receives a call and transmits the result of the call reception to the call controller 128 of the system handler 12.

The call controller 128 stores the execution result of the indicated operation, that is, the call setup result in the fourth DB 124, and stores the execution result stored in the fourth DB 124 of the user interface unit 11. It is provided to the user through the monitoring function.

The call simulation system of the present invention having the above-described configuration and operation controls the test call by combining the mobile call simulator 13, the base station call simulator 14, and the land call simulator 15, thereby controlling the mobile communication system. The performance and capacity of supplementary services can be tested for the entire interval. 11 to 13 illustrate the types of test calls provided through the call simulation system according to the present invention for each section, and the call simulation system according to the present invention can provide a voice test call, an SMS test call, and an additional service test call. Can be.

First, in the present invention, the voice test call is a test call for testing an additional service of a switching system such as a call transfer, call waiting, and a conference call. As shown in 11.

First, by setting the mobile terminal 9 controlled by the mobile call simulator 13 as a destination and a source, it is possible to provide a voice test call for the section M-to-M from mobile to mobile. In the case where the mobile terminal 9 controlled by the mobile call simulator 13 and the virtual mobile terminal generated by the base station call simulator 14 are set as a destination / originator, a section from mobile to a base station controller (BSC) may be used. It is possible to provide a voice test call for to-B), by setting the mobile terminal 9 and the virtual mobile terminal of the land call simulator 15 controlled by the mobile call simulator 13 as destinations / calling destinations, respectively. It is possible to provide a voice test call for the land interval (M-to-L) in the mobile of the mobile communication system, and by setting the virtual mobile terminal of the base station call simulator 14 as a destination / originator, A voice test call is provided for a section B-to-B to the base station controller, and the base station call simulator 14 and the land call simulator 15 are set to originate / receive to move from the base station controller BSC. It is possible to provide a voice test call of the section (B-to-L) to the exchange (MSC), and the call between the mobile exchange (MSC) (L-to) by making all outgoing / incoming processing in the land call simulator 15. A negative test call for -L) can be provided.

12 shows SMS test calls for each section that can be provided through a call simulation system in the present invention. The SMS test call is for providing a processing capacity test of various application services and a message center (SMC) using SMS. By controlling the incoming and outgoing from the mobile terminal 9 controlled by the call simulator 13 to provide an SMS test call for the interval (M-to-M) from mobile to mobile, the mobile call simulator ( 13, the mobile terminal 9 to the base station controller (BSC) by controlling the incoming and outgoing processing between the mobile terminal 9 and the virtual mobile terminal generated in the base station call simulator 14 is controlled (M-to -B) SMS test call may be provided, and incoming and outgoing calls may be made in the virtual mobile terminals of the base station call simulator 14. By lock control, an SMS test call is provided for the interval (B-to-B) from the base station controller to the base station controller.

Next, the additional service test call is provided for the function and capacity test for various additional service equipment, such as VMS, VAS, intelligent network system, the scenario control function through DTMF / sound transmission and reception is used for the test.

FIG. 13 illustrates an additional service test call for each section provided by the call simulation system according to the present invention. Since the additional service is performed between the mobile terminal and the additional service equipment, the destination is the additional service equipment, and each origination process is performed. By controlling the mobile terminal connected to the mobile call simulator 13, the virtual mobile terminal of the base station call simulator 14, the virtual mobile terminal of the land call simulator 15, the additional service equipment in each of the mobile, base station controller, mobile switch An additional service test call is provided for the interval up to.

The present invention can easily test the performance and processing capacity of the switching system for the newly proposed service made in all sections of the mobile communication system by combining the aforementioned voice test call, SMS test call and additional service test call. Will be.

In this case, the user interface 11 provides a test scenario management, a project management, and a result analysis screen so that a user may facilitate test management and result confirmation of the exchange system, which may be provided as shown in FIGS. 14A to 14I. have.

FIG. 14A illustrates a scenario creation screen for supporting scenario creation of a test desired by a user, hierarchically representing a test scenario previously registered to the left side of the screen, and expressing detailed operations set in the scenario selected from the left side on the right side. In addition, it is possible to set parameters in a separate window for the selected operation in the right window. One of the scenarios presented through the screen may be selected or a scenario may be newly created.

14B illustrates an example of a project creation screen that generates a test project for testing a plurality of functions by combining a plurality of scenarios, and shows a scenario that may be included in the project at the bottom left of the screen, and is included in the project on the right side of the screen. The scenarios are displayed in order, and the scenarios included in the left screen of the screen may be set in the project by using a drag and drop function. When generating a project, by selecting a scenario shown in the lower left of the screen as described above, copied to the right screen, by selecting each scenario to specify the parameters, the project generation is completed. In the above parameter setting, the call-by-call scenario for the performance test should input the number of test repetitions and the test start time, and the load test scenario for the load test includes the total number of calls, the call generation type, the average talk time, and the total execution time. Input load rate information, etc.

In addition, the project creation screen provides a function that can be set by selecting immediate execution or scheduled execution of the project.

FIG. 14C illustrates an example of a monitoring screen that provides a progress state for a user to monitor an ongoing test through a call simulation system according to the present invention. The project unit indicates a progress rate, a success rate, a failure rate, and a project reservation status of a running project. Monitoring, scenario-by-scenario monitoring that displays scenario progress, success rate, and failure rate, operation-specific monitoring that indicates whether the operation was successful, the cause of failure, actual performance operation parameters, and call processing at the application layer (ISUP, BSSAP) level. Provides trace log of execution process and MMC execution result.

FIG. 14D illustrates an example of a result search screen in which a user can search for a result of a project for which a test is completed, and the user interface 11 displays test results (success rate and failure rate) for each project stored in the system handler 12. Etc.) and a test result for the project selected through the search screen is provided in detail through the detailed test result analysis screen as shown in FIG. 14E. The project search function provided in FIG. 14D includes a function of searching for a completed project based on a project name and a test date, call counts such as the number of attempts / successes / failures per project / scenario, and statistics by failure cause. In the detailed analysis screen provided as shown in FIG. 11E, the number of scenario unit attempts, success rate, call setup delay time, holding time, success or failure per operation, cause of failure, actual performance parameter, trace log and addition It provides the output function for the MMC performance result of the equipment.

In addition, the user interface unit 11 according to the present invention provides a user interface function for operation management and maintenance of the call simulation system, in addition to monitoring and analyzing results. 14F to 14I illustrate examples of a user interface screen for operation management and maintenance.

First, FIG. 14F shows an example of a system monitoring screen provided to a user by the user interface unit 11, and shows system state information such as a mounting shape, a failure, and an operating state of the call simulation system 10 according to the present invention. To monitor the system. More specifically, in the system monitoring screen shown in Fig. 14F, the mounting shape for each component constituting the call simulation system 10 is shown in the center window of the screen, and the fault occurrence position W20 is visually displayed in the mounting shape. Display. In addition, on the left side of the system monitoring screen, a load monitoring screen (W10) such as CPU load rate, channel occupancy rate, and disk utilization rate of the call simulation system 10 is provided, and an alarm monitor screen (W30) at the lower portion warns an operator when a failure occurs. To provide.

Next, FIG. 14G illustrates an example of a channel monitoring screen provided to the user by the user interface unit 11, and more specifically, a channel controlled by the base station call simulator 14 and the land call simulator 15. This is a status monitoring screen in which the channel provided by the mobile communication system is indicated by a rectangle on the upper part of the screen, and the status of the corresponding channel is expressed in color, and the occupied status (call, block, DTMF, incoming, outgoing, etc.) for each channel Channel status), and the lower part displays the channel occupancy status. In addition, the channel state monitoring screen provides a channel listening function, so that the channel state can be monitored by listening to sounds such as voice transmitted through the occupied channel.

Next, FIG. 14H shows an example of an MMC console screen provided by the user interface unit 11, and additional service equipments (HLR / SCP / VAS / AuC) of a mobile communication system connected to the system handler 12. / SMC / VMS, etc.) allows the operator to execute commands directly through the MMC interface and check the results. As shown in the figure, the MMC console screen displays a registered command list (W80), a command parameter input window (W60) for management of command registration / modification and parameter setting for each device, and a command execution result representing a command execution result. It includes a result display window (W70).

 Finally, FIG. 14I illustrates an example of a system statistics screen provided through the user interface unit 11. The system statistics screen allows the call simulation system 10 according to the present invention to search and view call test statistics and call simulation system 10 generated during a call test, and to select a search condition. (W90), a window (W100) for setting a storage and storage file format for the search results, a first search result inquiry window (W110) showing a graph of the search results, and a second showing the search results in a table form (W90). The search result inquiry window W120 is included.

As described above, the land call simulator of the present invention operates as if a location-registered virtual terminal exists, and provides a test call to the mobile switchboard of the mobile communication system, thereby testing the performance and capacity in the land section of the mobile communication system. In addition, by providing the mobile call simulator and the base station call simulator together, it is possible to provide various test calls for the entire section of the mobile communication system.

In addition, the present invention allows a user to create a test scenario by combining the control operations of the call simulator corresponding to a function in a mobile communication system, thereby easily creating a test scenario for a newly proposed new service. This allows new services to be pre-validated under conditions similar to those in the field, resulting in superior service quality.

Claims (38)

Providing a test scenario that combines a plurality of operations corresponding to each function, a project in which the scenario is combined, and a user interface screen and a function for inquiring monitoring and execution results for the test scenario and the test project. A user interface unit; A system handler for instructing operations to be performed in a corresponding order according to a test scenario and a test project set through the user interface unit, and collecting and providing the result to the user interface unit; And A mobile call system connected to a mobile switch, the land call simulator generating and processing a test call for a location-registered virtual mobile terminal according to an instruction from the system handler, and outputting a result of performing the test call to a system handler; Performance and load inspection system. The land call simulator of claim 1, wherein An ISUP processing unit supporting an IDN (ISDN user part) protocol for performing call control such as circuit switching, packet switched access, identification of outgoing / incoming calls, incoming call transmission, and the like, for a virtual mobile terminal; By setting a trunk group between the mobile switching system (MSC) of the mobile communication system, the number of channels and channel groups to be tested are designated, and a virtual mobile terminal 1: 1 corresponding to the designated channel number is generated, A test call controller configured to control test call processing and transmission / reception of a DTMF and a sound source for a virtual mobile terminal generated according to a system handler's instruction; And A management information storage unit for storing relay line information such as trunk channel and trunk group information required for the operation of the test call control unit, basic information including at least one of number.7 information and virtual mobile terminal information; Performance and load inspection system of the mobile communication system, characterized in that. The land call simulator of claim 1 or 2, wherein At least one of a voice call origination processing operation, a voice call termination processing operation, a voice call termination processing operation, a DTMF transmission and reception processing operation, a voice reproduction processing operation, a virtual terminal state information inquiry operation, and a channel state information inquiry operation Performance and load inspection system of the mobile communication system. The land call simulator of claim 1, wherein A signaling handler performing call signal processing for the virtual mobile terminal; An Interactive Voice Response (IVR) handler that performs channel management, call channel control, DTMF / sound transmission and reception, and end-to-end path loss testing; And An outgoing call simulator and an incoming call simulator, each consisting of a voice call agent for controlling the signaling handler and the IVR handler to perform a voice test call and a voice supplementary service test according to an operation instruction from the system handler. Performance and load test system of the mobile communication system, characterized in that it comprises a. The method of claim 1, Further comprising a mobile call simulator connected to one or more mobile terminals to manage the information of the connected mobile terminals, controlling the one or more mobile terminals through a DM interface according to the instructions of the system handler to perform the origination and reception of a test call. Performance and load inspection system of a mobile communication system, characterized in that. 6. The mobile call simulator of claim 5 wherein the mobile call simulator is A Diagnostic Monitor (DM) interface processor connected to the mobile terminal to support operation control of the mobile terminal; A test call controller configured to control the mobile terminal so that a test call is generated and received through mobile terminals connected through the DM interface processor by performing an operation indicated by the system handler; And And configuration information and status information about a port connected to the mobile terminal for the control operation of the test call controller, and a management information storage unit for storing information and status information of the mobile terminal connected to the port. Performance and load inspection system of the mobile communication system. The method of claim 5, The mobile call simulator, A performance and load checking system of a mobile communication system, characterized by generating and processing an SMS test call through a mobile terminal using an AT extension command. The method of claim 5, It further comprises a multi-port terminal server having a plurality of ports connected to a plurality of mobile terminals, and is connected via the mobile call simulator and Ethernet to control data exchange between the plurality of mobile terminals and the mobile call simulator. Performance and load inspection system of the mobile communication system. 6. The mobile call simulator of claim 5 wherein the mobile call simulator is Corresponds to one or more functions among voice call origination request, voice call waiting, voice call progress inquiry, button input request, voice call termination request, SMS call request, SMS reception wait, terminal status information inquiry and channel status information inquiry A performance and load checking system of a mobile communication system, characterized in that for performing operations. The method of claim 6, The test call control unit And emulating an input scenario of a user keypad to generate an additional service test call. The method of claim 6, The test call control unit, End-to-End Path Loss by sending DTMF tones corresponding to originating number and called party at the calling party and checking whether the DTMF tone received at the receiving party matches the calling party's calling party's calling party's calling party number Loss) Performance and load inspection system of a mobile communication system, characterized in that to further perform the test. The method of claim 6, The mobile call simulator A signaling handler performing signal processing for call control for the mobile terminal; An Interactive Voice Response (IVR) handler that performs channel management, call channel control, DTMF / sound transmission and reception, and end-to-end path loss testing; And An outgoing call simulator and an incoming call simulator each consisting of a signaling handler and a voice call agent controlling an IVR handler to perform a voice test call and a voice supplementary service test according to an operation instruction from the system handler. Performance and load inspection system of the mobile communication system comprising a. The method of claim 1, Generating a location-registered virtual mobile terminal, and controls the generated virtual mobile terminal to perform the operation according to the instructions of the system handler, and transmits and receives a voice call / incoming and outgoing test call, DTMF, sound source with the mobile exchange The base station call simulator; performance and load checking system of the mobile communication system further comprising. The method of claim 13, wherein the base station call simulator An A-interface processing unit for exchanging a test call between the mobile exchanger; By setting the trunk group between the mobile switch and the mobile station, the number of channels to be controlled and the channel group are specified, a location-registered virtual mobile terminal 1: 1 corresponding to the designated channel number is generated, and the system handler A test call control unit controlling a test call processing by the virtual mobile terminal according to an instruction; And And a management information storage unit for storing management information for a test call processing in the test call controller. The method of claim 14, The management information includes trunk line information including trunk channel and trunk group information for the control operation of the test call controller, and a number. 7 includes signal points, signal links, signal link sets, BSAP SSNs, and system IDs. Information and virtual CDMA system information including a virtual CDMA system ID, a network ID, a base station ID, and a sector ID, and at least one of state information of a virtual mobile terminal. . The method of claim 13, A mobile station identification number (MIN) and a device serial number (ESN) are designated for a virtual mobile terminal, and a unique system ID and a network ID are assigned to each base station call simulator. And performing location registration on the mobile terminal to generate a location-registered virtual mobile terminal. The method of claim 13, The base station call simulator may include location registration processing, terminal authentication processing, voice call origination processing, voice call incoming processing, voice call canceling processing, call waiting, multiparty calling processing, DTMF transmission and reception processing, voice reproduction processing, and SMS transmission. And one or more operations corresponding to the processing, SMS receiving processing, virtual terminal status information inquiry, and channel status information inquiry function, respectively. The method of claim 13, The base station call simulator, A signaling handler performing call signal processing for the virtual mobile terminal; An Interactive Voice Response (IVR) handler that performs channel management, call channel control, DTMF / sound transmission and reception, and end-to-end path loss testing; And An outgoing call simulator and an incoming call simulator, each consisting of a voice call agent for controlling the signaling handler and the IVR handler to perform a voice test call and a voice supplementary service test according to an operation instruction from the system handler. Performance and load test system of the mobile communication system, characterized in that it comprises a. The method according to any one of claims 4, 12, 18, The outgoing call simulator and the incoming call simulator receive an SMS related operation from the system handler, control the signaling handler to perform an SMS test call corresponding to the operation, and return the result to the system handler. And a call agent further comprising: a performance and load checking system of a mobile communication system. The method according to any one of claims 1, 5, 13, wherein the system handler, A first DB for storing test scenarios and test project information created through the user interface; A project scheduler for periodically polling a test project stored in the first DB, reading a test scenario of a project to execute or reserve a project, and triggering a test call for each scenario; Call-call call controller that interprets the scenario triggered by the project scheduler to instruct a detailed operation, controls the execution of the next operation in response to the execution result of the indicated operation, and collects the execution result of each operation ; And A load test call controller which triggers a load test call for capacity checking from the project scheduler, instructs an operation for testing the load test call, and collects in response to the execution result; A second DB for storing terminal information and status information of the mobile terminal; And And a fourth DB for storing performance results collected by the call-by-call call controller and the load box call controller. The method of claim 20, wherein the system handler, A third DB for storing information on additional service equipments of the mobile communication system; And It is provided for each additional service equipment of the mobile communication system further comprises an MMC interface handler for processing the MMC (Man Machine Communication) interface with the additional equipment and stores the result, by controlling each additional equipment of the mobile communication system A performance and load inspection system of a mobile communication system, characterized by controlling a test environment. The method of claim 20, wherein the system handler, And a log manager which collects log information generated during test call execution and generates real-time tracking log information for the test call. 21. The system of claim 20, wherein said system handler is A state manager generating statistics by summing performance results collected by the call-by-call call controller and the load test call controller when the test for each test scenario is finished; And And a fifth DB for storing the statistical data generated by the state manager. The method according to any one of claims 1, 5 and 13, The user interface unit, For performance test scenarios, set one or more of the number of test iterations and test start time information, and for load test scenarios, include one or more of total number of generated calls, call generation type, average talk time, and total execution time. And a user interface function for setting load factor information. The method of claim 24, The user interface unit, project unit monitoring information indicating the progress rate, success rate and failure rate of the running project and the project reservation status, scenario unit monitoring information indicating the progress rate, success rate and failure rate of the scenario, success or failure of the operation, cause of failure, And a monitoring screen including at least one of operation-specific monitoring information displaying parameters of an actual performing operation, a call processing execution process, and tracking log information. The method of claim 25, The user interface unit, And a project search screen that provides a function of searching for a completed project and a project search screen that provides call statistics by a searched project or scenario and statistical results by a cause of failure. The method of claim 26, The user interface unit, It provides a detailed analysis screen that outputs the number of scenario unit attempts, success rate, call setup delay time, holding time, success or failure by operation, cause of failure, actual performance parameters, trace log, and configuration results of additional equipment for the selected project. Performance and load inspection system of the mobile communication system, characterized in that. A first step of providing a user with a list of operations performed in a land call simulator for simulating a land voice origination and reception call of a virtual mobile terminal with a mobile switcher; A second step of selecting one or more operations provided by a user and setting up a test scenario consisting of a combination of one or more operations and a test project combining two or more of the test scenarios; A third step of instructing to perform a corresponding operation according to the set test scenario or test project; A fourth step of collecting a result of performing the indicated operation; And And a fifth step of providing the collected performance result to a user. The method of claim 28, wherein the first step is And providing a list of operations performed in a base station call simulator for simulating a voice call signal and an SMS call signal of a base station controller for a virtual mobile terminal. 30. The method of claim 28 or 29 wherein the first step is And controlling the mobile terminal to provide a list of operations performed in the mobile call simulator for simulating the voice call and SMS call signals of the mobile terminal. The method of claim 28, Operation of the land call simulator provided to the user, Performance of a mobile communication system comprising at least one of voice call origination processing, voice call termination processing, voice call termination processing, DTMF transmission / reception processing, voice reproduction processing, status information inquiry of the virtual terminal, and channel state information inquiry. And load inspection method. The method of claim 29, The operation of the base station call simulator provided to the user, Location registration processing, terminal authentication processing, voice call origination processing, voice call incoming processing, voice call termination processing, call waiting, multiway call processing (3 way calling), DTMF transmission and reception processing, voice reproduction processing, SMS origination processing And at least one of SMS reception processing, virtual terminal state information inquiry, and channel state information inquiry. The method of claim 30, The operation of the mobile call simulator provided to the user, One or more of a voice call origination request, a voice call waiting request, a voice call progress inquiry, a button input request, a voice call termination request, an SMS call request, an SMS reception request, a terminal status information inquiry, and a channel status information inquiry of a mobile terminal. Performance and load inspection method of a mobile communication system, characterized in that. The method of claim 28, wherein the second step is For performance test scenarios, set one or more of the number of test iterations and test start time information, and for load test scenarios, load rates that include one or more of total number of generated calls, call generation type, average talk time, and total execution time. The method of claim 1, further comprising the step of setting information. The method of claim 28, wherein the second step is And setting a test start time for each test scenario and test project, wherein a third step is started when the set test start time arrives. The method of claim 28, And before the third step is performed, controlling the additional equipment connected to the mobile switchboard of the mobile communication system to set up a test environment. The method of claim 28, The fifth step is And collecting log information generated during a test call to provide tracking log information for the test call. The method of claim 28, And adding the collected performance results to generating statistics and providing the statistics to the user.

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