KR19990051711A - How to Configure Test Scenarios for Code Division Multiple Access Mobile Switching Traffic Simulator - Google Patents

Abstract

The present invention relates to a test scenario used for a functional test in a traffic simulator for a test of a CDMA mobile switching center, wherein the calling party number of the corresponding subscriber is defined in the directory number and optionally written in the directory number, and in the case of the calling subscriber. Participant number part defined only in the subscriber number and the subscriber number of the subscriber to be defined is defined in the dial digit and optionally filled in, and a numeric value not exceeding 255 as the area identifier, the base station control device number, and the cell number of the mobile station when the mobile call is handovered. A movement location area portion defined and selectively written to have a function, a movement call event keyword classified according to the movement call operation to define an actual movement call event, and an operation list portion to be performed by the movement call, which is essentially written, and a test scenario file That is the last line of me It consists of an executable part that is shown in the table and is essentially written and drives the actual scenario.

Description

How to Configure Test Scenarios for Code Division Multiple Access Mobile Switching Traffic Simulator

The present invention relates to a method for constructing a test scenario of a mobile switching center traffic simulator for testing the function and performance of a mobile switching center which plays a pivotal role of a code division multiple access (CDMA) mobile communication network. will be.

The mobile switching center traffic simulator is used as a method for testing the mobile switching center when the whole mobile network elements are not completely prepared. The mobile traffic switch traffic simulator is a device that provides the actual call environment while providing the signaling method and connection standard used by the mobile communication switch.

The mobile traffic switch traffic simulator must be able to send and receive messages to and from the mobile switching center according to the signal interface specification between the base station and the mobile switching center in order to fully perform the performance and functional testing of the mobile switching center. In particular, when the mobile communication exchange traffic simulator needs to transmit a message to the mobile communication exchange during the execution of the test scenario, there is a need for a method for effectively composing the message from the test information input by the user.

Since the existing Public Switched Telephone Network (PSTN) teleswitches accept only fixed subscribers, the subscriber line is directly connected to the subscriber processing board of the switch. Therefore, most exchange test equipment is testing the exchange by generating a signal such as a telephone used by fixed subscribers through a line directly connected to the exchange. However, since the mobile subscriber is wirelessly connected to the base station and the base station is connected to the switch, it is difficult to test the mobile communication switch with the existing exchange test equipment. In addition, all network elements in a CDMA mobile communication system, such as a mobile terminal, a base station, a base station controller, a visited subscriber location register, and a home subscriber location register, must be prepared for the test of the mobile communication exchange. However, building these network elements simultaneously during development is not easy.

Accordingly, the present invention configures a test message for testing a mobile call from test information input by a user in a mobile communication switch traffic simulator, which is a traffic generating device for testing a mobile communication switch, and transmits the test message to the mobile communication switch to provide a real base station. Its purpose is to provide a traffic test environment similar to the one used.

In order to achieve the above object, the present invention provides a method for constructing a test scenario of a mobile switching center traffic simulator, wherein the calling party number of the corresponding subscriber is defined in the directory number and optionally written in the directory number, and only in the case of the calling subscriber. The subscriber number of the subscriber to be called is defined in the dial digit and is optionally written, and has a numeric value not exceeding 255 as the area identifier, the number of the base station controller, and the cell number of the mobile station when the mobile call is handed over. Defines and selectively writes the mobile location area, inputs a mobile call event keyword classified according to the mobile call operation to define the actual mobile call event. Indicates that the line is required That is made by writing to include a run section that drives the real-world scenario characterized.

1 is a structure diagram of a CDMA mobile communication system to which the present invention is applied.

2 is a schematic diagram of a CDMA mobile switching center;

3 is a structural diagram of a traffic simulator for testing a CDMA mobile switching center;

4 is a structural diagram of a simulator control subsystem in a traffic simulator.

5 is a block diagram illustrating an interface between SCS components.

6 is a flowchart illustrating a test message construction procedure of a TSE.

7 is a flowchart illustrating a functional test procedure in a mobile switching center traffic simulator.

8 is a test scenario of a TSE in accordance with the present invention.

<Description of the symbols for the main parts of the drawings>

300: traffic simulator 301: channel test subsystem

302: Simulator control subsystem

41: Sequence Editor 42: Test Data Manager

43: Channel Information Manager 44: Test Scenario Launcher

45: user matching device 46: base station signal manager

47: test controller 48: interprocessor communication server

49: PCCA device drive

According to the present invention, a call test scenario and an event message sequence are analyzed to construct a call setup message transmitted between a base station and a mobile communication switch in a mobile switching center traffic simulator. According to this, necessary data were read from a file to compose a message.

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

1 is a schematic diagram of a CDMA mobile communication system to which the present invention is applied and includes a mobile station (MS) 100, a base station transceiver system (BTS) 101, and a base station controller (BSC). 102), Mobile Switching Center (MSC) 103, Visitor Location Register (VLR) 104, Home Location Register (HLR) 105 Control signal information between them is exchanged through the common line signal network.

The mobile terminal 100 has a terminal function of providing a CDMA mobile communication service to a mobile subscriber. The base station 101 is a base station wireless device that communicates with the mobile terminal 100 through a wireless connection, and is responsible for a wired / wireless connection function between the mobile terminal 100 and the base station control device 102, and accesses the base station control device 102. It consists of E1 / T1 digital trunk line matching devices. The base station control device 102 is a device for controlling the radio channel and the relay lines of the base station 101, and serves to map the radio channel to the wired channel. The mobile communication exchange 103 provides a call processing function for a mobile subscriber and an interworking function with an existing network 106. The visited subscriber location register 104 is located inside the mobile switching center 103 and contains temporary information for all mobile terminals 100 located within the current mobile switching center 103 area. The home subscriber location register 105 stores and manages subscriber information and location information for all mobile terminals 100 registered in the mobile communication network as a central database.

2 is a schematic diagram of a CDMA mobile communication switch according to an embodiment of the present invention, which includes a base station interface 200, a switch network 201, a trunk interface 202, and a subscriber location register. It consists of a registration register interface 203 and a central control processor 204.

3 is a connection diagram of a traffic simulator (TSS) 300 for testing a CDMA mobile communication switch and the mobile communication switch 310. The traffic simulator 300 controls a simulator control subsystem (SCS) 302 which collectively controls the test to perform the function and load test of the mobile communication switch 310 and the mobile call set during the test. It consists of a Channel Test Subsystem (CTS) 301 for confirming the configuration status with the actual call. The channel test subsystem 301 is connected to the mobile switching center 310 through an E1 or T1 digital relay line, and generates a large amount of traffic having a traffic characteristic of the mobile subscriber to connect the digital relay line connected to the mobile switching center 310. It transmits to the mobile communication switch 310 through. The IPC link conforming to the RS422 standard configured between the SCS 302 and the mobile communication exchange 310 is used as a signal link between the mobile communication exchange 310 and the base station control device, and constitutes a call in the mobile communication exchange 310. It is used for the purpose of confirming that the signaling message between the base station control device and the mobile communication exchange 310 is exchanged through this link.

4 is a structural diagram of an SCS in a traffic simulator. The components in the SCS include a sequence editor (hereinafter referred to as SEDIT) 41, a test data manager (hereinafter referred to as TDM) 42, and a channel information manager (hereinafter referred to as CHIM). 43, a user matching device (hereinafter referred to as a UI) 45, a base station signal manager (hereinafter referred to as a BSM) 46, a test controller (hereinafter referred to as a TC) ( 47), an interprocessor communication server (hereinafter referred to as IPCS) 48, a PCCA device drive 49 for controlling PPCA, and the like, and operate in a computer system using UNIX as an operating system.

In this case, the UI 45, the TC 47, and the BSM 46 form a test scenario executor (TSE) 44, which is an execution program, to perform simulation through an interface with an actual user. It works as a test process. The UI 45 receives the information and the command necessary for the test from the user, drives the TC 47, stores the test situation and the result, and outputs the result to the user screen. The TC 47 analyzes coded test scenarios, message sequences, and mobile subscriber information received from the UI 45, controls the execution of test procedures required by the user, and executes message transmission / reception with the exchange. Report to (45). The BSM 46 analyzes the message received by the TC 47 from the exchange and the function of configuring the signaling message that the TC 47 transmits to the exchange according to the protocol format of the BSC-MSC signal interface specification (Draft). It is responsible for the function of delivering to the TC (47). The IPCS 48 is responsible for the communication function between the MSC and the BSC to deliver the message to the exchange and the TSE 44 correctly when several TSEs 44 request the exchange of messages with the exchange. The CHIM 43 is in charge of allocating and releasing a call to use for each TSE (originating call) 44 when an inter-call call test is required. The TDM 42 manages the information data of the mobile subscribers necessary for the TSEs 44 to construct a message according to the MSC-BSC Signaling Interface Specification. The SEDIT 41 functions to create a file constituting a message transmission / reception sequence with the exchange to be performed for each event of the defined mobile call.

5 is a block diagram illustrating an interface between SCS components. The TSE 501 that simulates a base station includes a test scenario file 504 describing a mobile call operation created by a user, a plurality of message sequence files 505 that define a transmission / reception sequence of messages according to the mobile call operation, and a transmission message to an exchange. The mobile subscriber information file 506 required for configuration is used to perform a test procedure desired by the user. The interface with the IPCS 513, which is responsible for sending and receiving the actual messages to and from the exchange, uses a UNIX message queue 509, and the TSE 501 uses a Circuit Identity Code (CIC) for call testing. Allocating and freeing requests use shared memory 508 and semaphore 507 implemented for the purpose of synchronization between TSE processes and consistency of CIC data.

6 is a flowchart illustrating a test message configuration procedure of a TSE according to a functional test procedure. When the user selects a functional test scenario, an event is sequentially performed according to the selected scenario (61). The performance of an event is transmitted and received by configuring (63) an information element corresponding to each message (62) according to the sequence of message sequences defined in each event.

7 is a flowchart illustrating a functional test procedure in a mobile traffic exchange traffic simulator. The user configures an outgoing call test scenario consisting of a calling party number, a called party number, and an event sequence and inputs the traffic simulator to the traffic simulator (701). For each event included in the event sequence of the originating call test scenario, a sequence of messages consisting of a message name, transmission direction, time, and message type is configured and input to the traffic simulator (702). When the message type of the message is transmission (Tx), information element information including information element name, direction, information element type, and length is configured and input to the traffic simulator (703). The actual subscriber information necessary for constructing the information element is configured and input into the traffic simulator (704). When the input is completed by steps 701 to 704, the traffic simulator performs the test scenario in parallel (705). The message sequence corresponding to each event is analyzed to process each message (707). If the transmission direction of the message is to be transmitted (Tx), that is, transmitted to the mobile communication switch (708), the input message information and the subscriber are input. A message is constructed from the information (709) and sent to the mobile communication switch (710).

8 is a configuration diagram of a test scenario of a TSE according to the present invention. TSE's test data structure consists of multi-level structures such as test scenario 61, message sequence 62, message information element 63, and mobile subscriber information data to support various test purposes. The best test objectives can be achieved by operating properly for the test objectives. The test scenario includes a directory number (DN) 81 of the mobile call to be tested, a list (PGL) 84 of operations to be performed by the mobile call, and a calling number (DIAL) 82 required for the operation. Data such as a moving location area (MOVE) 83 is described. The test scenario describes the operation of each mobile call and consists of the following:

DN portion 81 is the subscriber's calling party number (MDN) is defined in the directory number (directory_number), the directory number (directory_number) is the DN of the mobile call assigned to the simulator 0 to 9, '*' or '# It consists of 10 digits of 'and is written as optional.

The DIAL part 82 is defined only for an outgoing subscriber, and the subscriber's subscriber number (MDN) is defined in the dial digit (dial_digit) part, and the dial digit (dial_digit) is the DN of the called mobile call. It consists of 10 digits of '*' or '#' and is optionally written.

The MOVE portion 83 has a numerical value of not more than 255 as a zone identifier (zone id), a base station control device number (BCS No), and a cell number (cell No) of a place to be moved during handover of the mobile call. It is defined in zone_id, bsc_no, and cell_no and is optionally written.

The PGL portion 84 defines an event of the actual mobile call, and inputs a mobile call event key word classified according to the mobile call operation in the event keyword (event_key_word) and mandatory. Is written.

Execution (EXE) part 85 is the part that drives the scenario, indicating that it is the last line of the test scenario file and is essentially written.

The test scenario reserved words as described above are shown in [Table 1].

sign use / * commemd's start parenthesis * / end parentheses of commend : Identifier added to identify reserved words , Symbol (#MOVE) to distinguish individual data in the input data set ; Symbol to distinguish between one or more input data sets ;; Identifier indicating last input

In the present invention, the mobile call event used in the test scenario of the TSE is divided into 13 keywords based on the basic operation of the mobile call.

The power on (POWER_ON) performs a power on position registration of the mobile call.

Power off (POWER_OFF) performs power off position registration of the mobile call.

The time location update (TIME_LOC_UPDT) performs time location update location registration of the mobile call.

The zone location update (ZONE_LOC_UPDT) performs a zone location update location registration of the mobile call.

DIAL performs the origination of the mobile call.

Receive paging (R_PAGING) performs receive paging of the mobile call.

The base station handoff (BASE_HANDOFF) performs a handoff between base stations of the mobile call.

The cell handoff (CELL_HANDOFF) performs handoff between cells in one base station of the mobile call.

An internal handoff (INTER_HANDOFF) performs a handoff in a cell of a mobile call.

N_RELEASE performs a hangup on the mobile call.

The base station control device hang up (B_RELEASE) performs a hang up in the BSC.

The P_RELEASE performs a power off call hang up.

R_RELEASE waits for the other party to hang up in a busy state.

DELAY stops the operation for a certain time.

The mobile call event as described above is shown in [Table 2] like the defined keyword and code value.

Lee Ho Ho Event Defined Keywords Code value Power on POWER_ON 0x01 Power off POWER_OFF 0x02 Time Location Update TIME_LOC_UPDT 0x03 Zone Location Update ZONE_LOC_UPDT 0x04 Dial DIAL 0x05 Receive Paging R_PAGING 0x06 Base handoff BASE_HANDOFF 0x07 Cell handoff CELL_HANDOFF 0x08 Inter handoff INTER_HANDOFF 0x09 Normal Mobile Station Release N_RELEASE 0x0a BSC Release B_RELEASE 0x0b Power Down Release P_RELEASE 0x0c Receive Release R_RELEASE 0x0d calling DELAY <sec> 0x7f

As described above, according to the present invention, in order to provide an outgoing mobile call traffic environment in a mobile switching center traffic simulator, a test scenario file, a message sequence file, and information on a message configuration are input from a user, and a message sequence according to the test scenario is performed. By configuring a message that needs to be transmitted to a mobile communication switch from information input by a user, a realistic traffic environment can be provided when testing the performance and function of the mobile communication exchange.

Claims (4)

The originating subscriber number of the subscriber is defined in the directory number, the directory number portion that is optionally entered, Defined only for outgoing subscribers, the subscriber's subscriber number being defined in the dial digit and optionally filled in; A mobile location area portion which is selectively defined and has a numerical value not exceeding 255 as a mobile station's area identifier, a base station controller's number, and a cell number during handover of the mobile call; Part of the operation list to define the event of the actual mobile call by inputting the mobile call event keyword classified according to the mobile call operation, A test scenario configuration method of a code division multiple access mobile switching center traffic simulator, which indicates that it is the last line of a test scenario file and includes an execution part that is essentially written and runs an actual scenario. 2. The code division multiple access mobile communication according to claim 1, wherein the directory number is a directory number portion of a mobile call assigned to a simulator and is composed of a number from 0 to 9 and 10 digits of '*' or '#'. How to configure test scenarios for the exchange traffic simulator. 2. The code division multiple access mobile communication exchange traffic simulator according to claim 1, wherein the dial digit is a directory number portion of an incoming mobile call and is composed of a number from 0 to 9 and 10 digits of '*' or '#'. To configure test scenarios The method of claim 1, wherein the event keyword comprises: a power on keyword for performing power on location registration of the mobile call; A power off keyword for performing power off position registration of the mobile call; A time position update keyword for performing time position update position registration of the mobile call; A local location update keyword for performing local location update location registration of the mobile call; A dial keyword for performing the origination of the mobile call; A received paging keyword for performing paging of the mobile call; A base station handoff keyword for performing handoff between base stations of the mobile call; A cell handoff keyword for performing intercell handoff in one base station of the mobile call; An internal handoff keyword for performing handoff in the cell of the mobile call; A mobile call hung keyword for performing a call hung in the mobile call; A base station controller hang up keyword for performing a hang up at the base station controller; A power off hang up keyword to perform power off hang up; A hang-up keyword waiting for the other party to end a call while in a call; A method for constructing a test scenario of a traffic splitting multiplexer traffic simulator comprising a delay keyword for stopping operation for a predetermined time.