KR0146647B1 - A radio-port simulator for the wireless isdn exchanger - Google Patents

Abstract

The present invention relates to an RP simulator of a wireless integrated information communication network having a switching function of a switch, a portable station (hereinafter referred to as PS) and a function of an RP to test a personal communication exchange system. Wireless ISIS (Wireless ISDN Traffic Simulator), a test scenario and test data, which transmits to an external exchange and provides an environment in which channel information and protocol conformance by a message from the exchange can be tested. A traffic simulation management means (TSS: Traffic Simulator Subsystem) for outputting a message conforming to a signal standard to the wireless traffic simulating means so as to conform to the RP (Radio Port) format and to test the RPC. Tests taken during development in the development of exchange system for generalization of information and communication network For there is an effect that can be cost and time savings.

Description

Lido port simulator of the switch for the wireless access information network

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram of an embodiment of a radio port simulator of a switch for a wireless access information network according to the present invention.

2 is a flowchart illustrating an exemplary process of performing a simulation call processing method according to the present invention.

The present invention relates to a radio port (RP) simulator for more effectively developing an electronic integrated service digital network (ISDN) wireless access system. In particular, the present invention relates to a radio port including a function for testing mobile calls. The present invention relates to a radio port simulator that can test a personal communication exchange system by generating test scenarios and test data conforming to a format.

ISDN, which is one of the existing communication systems, integrates various high quality and rich information communication services and provides them economically and cheaply. With the development of computer technology, ISDN provides voice, data, and video services to the same communication network. It is to provide a variety of high quality communication services through the addition of information processing functions to accommodate the service needs of users that are advanced, diversified, and complex. However, existing systems are limited to providing fixed services by wire.

In order to solve this problem, it is possible to realize wirelessization of wired ISDN subscribers, provide wireless access service, and provide ISDN service to wired / wireless subscribers under the same network environment. In addition, it will be possible to provide communication services to subscribers of wired / wireless ISDN.

However, when using an existing test apparatus or exchanger for the test performed in the development process of the ISDN wireless switching system, there is a problem that excessive cost and real test time is delayed.

Accordingly, the present invention has been made to solve the above problems, by using a general-purpose computer to generate virtual call data that can test and control the exchange matching protocol of the personal communication exchange to simulate the exchange Scenarios such as location registration, handover, and billing for mobile calls are included in the TS (Traffic Simulation Subsystem) to fix the call processing capability of the exchange which was not possible in the existing Telecommunication network test equipment. And a radio port simulator of a switch for a wireless access information network capable of performing a mobile call test.

The present invention for achieving the above object is composed of a 30B + D channel and 1 to be connected to an external exchange by configuring the firmware (Firmware) to process the signal information and maintenance functions using the D-channel link access procedure Vehicle speed matching means; Subscriber matching means connected to the primary group speed matching means and performing subscriber matching with a general information communication network; Time switching means connected to the first group speed matching means to perform tone distribution and signal connection functions; By controlling the time slot exchange of the time switching means to transmit / receive Perth code modulation data, and to check the state of the call path in the switch and to compare specific data on the call path with the data output from the incoming / outgoing subscriber line. Time switch control means having a function of measuring reliability of a communication path; Local service matching means connected to the time switching means and having a double tone multi-frequency signaling function for a transmitter / receiver test; Local service control means for controlling the local service matching means to set an initialization, an operation mode, and test data; Test data editing means capable of editing and managing said test data; Test scenario editing means for defining and editing the test scenario; Traffic channel management means that is responsible for allocating and releasing a call between incoming / outgoing signals in a call test between the mobile calls; Test data management means for adapting the test scenario and test data to a radio port format and performing a message function conforming to a signal specification to test the exchange; Radio port simulation management means connected to the test scenario editing means and the test data editing means to analyze information element of a message and manage the signal protocol of the radio port and the exchange period; And a test control means for controlling the entire simulator through a predetermined driver connected to the local service control means, the time switch control means and the subscriber matching means, and having an interface function between an input / output device.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 and 2.

1 is a block diagram of an embodiment of a radio port simulator of a switch for a wireless access information network according to the present invention.

As shown in FIG. 1, a radio port simulator of a switch for a wireless access information network according to the present invention is composed of a WITS (Wireless ISDN Traffic Simulator) as a hardware part and a TSS (Traffic Simulator Subsystem) as a software. In WITS, messages sent from TSS are sent to the exchange, and the environment provides a test environment for channel information and protocol compliance by messages from the exchange.

In more detail, it is connected to the exchange by an interface called PRI (Primary Rate Interface) in WITS. The PRI is composed of 30B + D channels, and the Link Access Procedure on the D-Channel is a D-channel link access procedure. Configure the firmware to handle the signal information and maintenance function using).

The present invention uses an existing PRI board, modifies the firmware of the PRI block, and enables subscriber registration using an ISAP (ISDN Subscriber Access Precessor). In addition, the TSW is connected to four 2.048 MIIz bidirectional subhighways to process B-channel transmit / receive data.

The TSW receives an 8 KHz FS signal and a 4.096 MHz clock signal from a TSP (Time Switch Processor), is connected to a local service interface (LSI) and a subhighway, and performs tone distribution and signal connection functions.

In addition, the TSP transmits / receives PCM data through the SHW and exchanges time slots by controlling the control memory for data temporarily stored in the memory for time slot exchange. Such a TSP has a function of checking the state of a call path in the exchange and a function of measuring the reliability of the call path by inputting specific data on the call path from the incoming / outgoing subscriber and outputting data from the incoming / outgoing subscriber line.

LSI device in WITS has DTMF R2 (Dual Tone Multifrequency Signaling) signal generation function for transmitter / receiver test, and is connected by TD-bus for message exchange with LSP (Local Servo Processor). The TD-bus consists of 13 signal lines in a serial manner of 1 byte data unit, and transmits / receives signals and clock addresses in defined bidirectional directions.

The WITS block provides only the exchange matching function and the call test function of the personal communication exchange in this test, and the message generation and control function for testing the personal communication exchange is generated by a block in the computer.

In this LSP, it is possible to set LSI initialization, operation mode, and test data, control LSI, transmit received signal to TSS block, and receive control message from TSS.

The configuration of the software part TSS defines a Man Machine Interface (MMI) block, Test Object Data and Editor (TODE) block with the ability to edit and manage test data, and test scenarios for ease of use. In this RP format, the SDE (Senario Definition and Editor) block for editing, the TCM (Traffic Channel Manager) block, test scenarios and test data, which are responsible for allocating and releasing the call between incoming / outgoing signals in the call test between mobile calls, Test Data and Management (TDM) block that performs the message function in accordance with the signal specification so that the RPC can be tested and RPC, Radio Port Simulation Management (RPSM) that analyzes the information elements of the message and manages the signaling protocol between RP and RPC, Finally, it consists of a TC (Test Controller) block that controls the entire simulator and has an interface function between input and output devices.

These features allow you to configure the functionality of TSS in a UNIX system environment using workstations that support X11 servers.

To express this in detail, MMI block in TSS can be configured by using graphic tools to make it convenient and easy for users to conduct the simulation. When this is configured, it consists of X11 window and the whole test. It builds windows for controlling and managing windows, with a step-by-step test procedure and a graphical display of intermediate and intermediate results, and a window for help on the functionality of the entire simulator.

The TODE block is a file that defines a test procedure for actually testing. The information elements that make up the message consist of the minimum number of mobile call information data by defining signaling protocols with RP and RPC. Contains information data that change due to

The SDE block has the ability to define test scenarios and message sequences to support a variety of tests. It also lists the DN (Directory Number) of the mobile call under test, the list of actions to be performed by the mobile call, the calling number and handover data required for the operation. It defines messages that define the sequence of messages to be sent / received with the exchange, and has the ability to create and modify the function of editing this information in a menu driven manner.

The TCM block is a block that manages channel information. It supports testing of upper TC blocks and executes them in a unit process. At this time, it performs the function of allocating and releasing the circuit identity code (CIC) necessary for the actual test of the upper process, and the test processor that performs call processing, etc., has information about the CIC, that is, the pulse code modulation (PCM) line. It has a function to check the status information of the call in use by using the call channel information composed of the number and time slot number.

The TDM block is a block that manages fixed and mobile call data information elements used for message transfer according to the signal interface protocol between RP and RPC. The mobile call variable data performs a function of searching, modifying, and deleting subscriber element information generated by mobile call operation, and has a function of supporting each test process.

The RPSM block constructs an information element for call processing signaling messages for transmission to the exchange, testing the suitability of the signaling interface protocol between the RP and the RPC, and analyzing the information element of the message from the exchange and the conformance of the signaling protocol between the RP and the RPC. You can do this.

TC block analyzes test data, test scenario, message sequence and mobile subscriber information from designated file or MMI block, generates mobile subscriber information or other information necessary for test, and reads mobile call operation list and assigns to each operation. It analyzes the message sequence and transmits the message verification number, mobile call fixation information, and variable information generated during the test to the RPSM block.

2 is a flowchart illustrating an embodiment of a simulation call processing method according to the present invention.

As shown in FIG. 2, in the control screen of the simulator, a test type for testing the exchanger is selected on the start screen and the start button is pressed (201). In the call setup message information function, a basic message for a test type such as subscriber authentication, location registration, network signal, etc. is configured (202).

The test data is analyzed by searching for test scenario and test object information from the scenario data defined according to the test type (203, 204, 205). A grammar interpretation procedure for user-defined scenarios other than the test scenarios defined in the simulator is performed (206). If a grammar error is found as a result of the scenario analysis, a procedure for regenerating test data is performed.

On the other hand, if the scenario analysis is not performed in the scenario analysis process 206, the process 202 of configuring a basic message for the test type is performed again.

The TCM allocates a wired channel between the exchange and the test apparatus for the delivered scenario (207), retrieves the terminal's location information, device number, and available service related information from the mobile subscriber information database (208), and retrieves from the exchange. Process the function of updating the information defined in the received message (209). The semantic analysis procedure for the test message is performed using the related information to remove the message error generated in the simulator during the repeated test (210). Ability to code Layer 3 messages defined in the matching protocol between the switch network and the base station, to process the decoding of messages received from the exchange, and to send messages to the exchange using the ISDN basic rate matching application processor function. Process 212. The exchange receiving the layer 3 message from the simulator performs a number translation procedure for the subscriber (212), and when the number translation procedure is completed, analyzes the subscriber information and notifies the exchange to a paging response message (213), and the incoming call The authentication procedure for the subscriber is performed, and the routing information on the location information of the authenticated terminal is confirmed from the subscriber information processing apparatus to proceed with the incoming subscriber (214). When the authentication procedure is completed and the call is received, the call is started (215).

Meanwhile, if the number translation procedure is not performed in the number translation process 212 for the subscriber, the process 202 of configuring a basic message for the test type is performed again. Then, the mobile terminal fails to handle the call for the terminal that has failed authentication (216) and retries the test.

Calls are generated using the Control Window according to the graphics software. The signals are generated by DTMF via EIA232C and transmitted to the TSW. Through this, the B channel data and control channel are separated and transmitted to the exchange. In this case, since the window uses multiple windows, it is possible to configure several subscribers in one TSS.

TSS according to the present invention should have the function of performing the role of the RP and the role of the terminal at the same time as the RP simulator. In particular, it should also include the functionality of the matched exchange processor in the software module to enable call processing and operational integrity.

Outgoing call processing starts the call processing process because the terminal (in this case, one window) sends the setup message containing the called party number to the exchange via EIA232C. The authentication message (including mobile call in this case) is sent to the exchange to allow authentication. After receiving the message, send the setup message.

The exchange receiving the setup message requests the originating subscriber's information to the VLR (Visitor Location Register) to analyze and author the originating subscriber's information, and transmits a call-proceeding message to the control window through the PRI. At the same time, the channel assignment message for constructing the call path can be allocated in WITS, and the call number is translated into the home location register (HLR) block to establish the call path with the called party at the exchange. In the case of outgoing call, the type of call, such as outgoing call, is checked at the exchange and the routine for the occupancy of the trunk line and the handling of the outgoing call is performed.

When the called subscriber has mobility, the receiver receives the location information of the called subscriber from the HLR, requests and analyzes the subscriber information to the VLR inside the exchange system, and sends a paging message for the incoming call to the TSS using the called subscriber information to respond to paging. If the terminal (here, another control window of the same system or another TSS system) notifies the paging-response message to the exchange through WITS, an authentication procedure for the called party is performed (260).

The incoming subscriber who receives the setup message from the exchange requesting the incoming call after authentication requests the call from the exchange if it is idle. At this time, the called subscriber is informed using the tone function in WITS. The called party uses a hook off message and the call is connected.

In the case of a mobile call, when either originating / receiving sends a disconnect-request message to the exchange, the exchange sends a release message to the terminal to release the radio channel, receives the terminal's response, and then releases the channel. do.

As described above, the RP simulator of the present invention enables a handover function, and the handover sets a region called a cell so that the mobile call can move between cells. In this case, when moving from one cell to another, TSS The terminal function of sends the message to the exchange.

At this time, the terminal supplements the function according to the handover method of the mobile terminal led that can handle the handover process. If the handover message made from the terminal is a handover during the exchange period, the terminal sends a message to the terminal of the TSS through the internal exchange. Will be delivered.

In the case of a handover in the TSS, that is, an RP internal handover, a message is formed at the terminal in the TSS to inform the exchange that the handover has been performed. In this case, software for handling mobile calls should be developed. For example, a block capable of controlling a mobile call of a personal communication subscriber, a block for handover processing, a block for paging processing, a database system block for information management, a block for location registration, and the like must be created in the TSS.

As described above, the radio port simulator of the switch for a wireless access integrated information network according to the present invention is a simulator having a switching function, a mobile terminal, and a radio port function of a switch to test a personal communication switch system. Complementing the wired integrated telecommunication network simulation, test the exchange processing using the virtual call data generated in the radio port simulation, and also generate the virtual call data using the general-purpose computer to simulate the exchange. Includes scenario-forming functions such as location registration, handover, and billing in the TSS to enable fixed and mobile call tests for call processing capability of exchanges that were not possible with existing Telecommunication network testing devices. Wireless switching system There is an effect that can significantly reduce the cost and time of the test carried out in the process.

Claims (7)

A primary group speed matching means composed of 30B + D channels and configured to have a firmware configuration to process signal information and maintenance functions using a D-channel link access procedure; Subscriber matching means connected to the primary group speed matching means and performing subscriber matching with a general information communication network; Time switching means connected to the first group speed matching means to perform tone distribution and signal connection functions; By controlling the time slot exchange of the time switching means to transmit / receive pulse code modulation data, and check the state of the call path in the switch and compare the specific data on the call path with the data output from the incoming / outgoing subscriber line. Time switch control means having a function of measuring reliability of a communication path; Local service matching means connected to the time switching means and having a double tone multi-frequency signal generating function for a transmitter / receiver test; Local service control means for controlling the local service matching means to set an initialization, an operation mode, and test data; Test data editing means capable of editing and managing said test data; Test scenario editing means for defining and editing the test scenario; Traffic channel management means that is responsible for allocating and releasing a call between incoming / outgoing signals in a call test between the mobile calls; Test data management means for adapting the test scenario and test data to a radio port format and performing a message function conforming to a signal specification to test the exchange; Radio port simulation management means connected to the test scenario editing means and the test data editing means to analyze information element of a message and manage the signal protocol of the radio port and the exchange period; And a test control means for controlling the entire simulator through a predetermined driver connected to the local service control means, the time switch control means, and the subscriber matching means, and having an interface function between an input / output device. Radio port simulator. 2. The test data editing means according to claim 1, wherein the test data editing means defines a test procedure for actually testing, and information elements constituting a message constitute a minimum unit of mobile call information data by defining a signal protocol with the radio port and the exchange. And the mobile port fixed information unique to the mobile subscriber and the changed information data due to the mobile call operation. The method of claim 1, wherein the test scenario editing means has a function of defining a test scenario and a message sequence to support various tests, and includes a directory number of a mobile call under test, a list of operations to be performed by the mobile call, and an operation required for the operation. A wireless access point information network, characterized in that it defines a call number, a handover data, a message defining a sequence of exchanges and messages to be transmitted / received, and a menu driven method for creating and modifying a function for editing this information. Switchboard radio port simulator. The circuit channel matching code according to claim 1, wherein said traffic channel management means is a block for managing channel information, which supports testing of upper test control means and executes them in a unit process. : A test processor that performs a function for allocating and releasing a circuit identity code and performs a call processing, transmits information about the circuit match code, that is, a call channel information including a pulse code modulation line number and a time slot number. Radio port simulator of a switch for a wireless access integrated information network, characterized in that configured to check the status information of a call in use. The mobile station variable data according to claim 1, wherein said test data management means is a block for managing fixed and mobile call data information elements used for message transmission according to a signal interface protocol of the radio port and a switching period. A radio port simulator of an exchanger for a wireless access information network, characterized in that it performs a function of searching, modifying and deleting subscriber element information. 2. The apparatus of claim 1, wherein the radio port simulation management means comprises information elements for call processing signaling messages for transmission to the exchange and conforms to the format of the signal interface protocol between the radio port and the exchange. A radio port simulator for an exchange for a wireless access point information network, characterized in that it has a function of analyzing information elements and testing the suitability of the signal protocol during the exchange period with the radio port. The mobile communication apparatus of claim 1, wherein the test control unit analyzes test scenarios, message sequences, and mobile subscriber information, which are test data, is inputted from a designated file or externally, and generates mobile subscriber information or other information necessary for a test. Read the list to analyze the message sequence assigned to each operation, and transmit the message authentication number and mobile call fixed support and variable information generated during the test process to the radio port simulation management means to have a function of making a message request A radio port simulator for an exchange for a wireless access information network.