KR0140761B1 - Protocol testing method of an exchanger - Google Patents

Abstract

The present invention relates to a protocol checking method for a switch, and more particularly, a first process of accessing data stored in a storage means and dividing the data into message units according to a protocol of a wireless private exchange system, and each message analyzed in the process. A second process of transmitting a message to the system controller through the fixing device among the fixing devices, and a third process of receiving a response message of the system control device corresponding to the message transmitted in the process through the fixing device; And a fourth step of comparing the received response message with the data interpreted in the first step, wherein the response message is different from the data analyzed in the first step. Without actually implementing fixtures and handhelds There are effects that you can experiment with the performance of the protocol to be applied to the system in this situation.

Description

Protocol inspection method and apparatus for wireless private exchange

1 is a schematic configuration diagram of a conventional premises mobile communication system.

2 is a system configuration diagram of the present invention.

3 is a simulation program flowchart of the present invention.

* Explanation of symbols for main parts of the drawings

P1 to Pn: Portable device F1 to Fm: Fixed device

SC: System controller 10: Data matching unit

20: Multi serial data input / output unit PC: Computer

The present invention relates to a protocol inspection method for a switch, and more particularly, to a protocol inspection method and apparatus for inspecting a signal processing of an exchange period with each base station in a mobile communication system (wireless private switching system). .

In general, the mobile communication system (wireless private branch exchange system) in the premises is shown in FIG. 1 of the accompanying drawings, and includes portable devices P1 to Pn, fixed devices F1 to Fm, and system control device SC. ) Is made.

The system controller SC can basically connect four fixed devices, and can further mount the fixed devices according to the number of cells to be serviced within the allowable capacity of the exchange system. In addition, the fixed station connection device provided in the system control device SC provides communication means for voice and control data with the respective fixed devices F1 to Fm by the ISDN method.

Although not shown, the fixing devices F1 to Fm include a line matching unit, a DC-DC conversion unit, and a fixed station control unit. The fixed station connection unit, control data, and audio signal in the system control unit SC are converted into 2B +. It transmits and receives using a D type bus, and has a predetermined number of serial data input / output units for communicating with the corresponding portable devices among the portable devices P1 to Pn.

Each of the portable devices P1 to Pn is hardware carried by each subscriber and always attempts to approach only a fixed device that is already registered during a call. The stationary devices F1 to Fm perform a high frequency connection between the portable devices P1 to Pn and the system control device SC through a wireless channel, and remove the messages received from the portable devices P1 to Pn. Processing of the first and second signal layers, that is, a function of selecting and transmitting a desired channel from a plurality of channels, and processing of the first signal layer to start a link in synchronization for receiving a message transmitted from the portable devices P1 to Pn; For example, the message received through the link checks the authorization information or unauthorized information, detects the error, recognizes the error by retransmission and the correct sequence of the received message, and performs the processing of the signal layer 2 to maintain the link. After that, it transmits to the system controller (SC) and implements the time division communication method (TDM), thereby providing a reference clock to the portable devices (P1 to Pn) during communication.

In the case of analyzing call processing performance in the conventional wireless private exchange having the above configuration, or in order to know whether the proper processing of the handover message and the proper performance of the protocol have been performed, a large number of portable devices are not provided. After the actual situation was revealed by using the device, the operation status of the system was checked.

Such a conventional inspection method must reveal the actual situation using the portable device to analyze the call state according to the electric field strength of each portable device or the handover condition due to the change of position when the performance of the fixed station controller in the fixed device is examined. It is difficult to expect accuracy below, and the problem of handover processing becomes very difficult to confirm.

In addition, when a new mobile communication system is connected to a wireless private exchange having a new protocol, a new connection conversion device is required. Therefore, when constructing a new mobile communication system, it is difficult to grasp the contents of data transmission and reception between the fixed station controller and the mobile device in the fixed device. There is also a problem that can not grasp the state information of the existing system.

An object of the present invention for solving the above problems is to use a portable device by using data that stores data about control signals necessary for operating the system in various data that may occur in the portable device and the system control device. The present invention provides a protocol inspection method and apparatus for a wireless private exchange that can perform various inspections without using the same.

A feature of the present invention for achieving the above object is a protocol inspection apparatus in a wireless private exchange system having a plurality of fixing devices and a system control device for controlling the fixing devices, the serial data in each holding device. Data matching means connected to the input / output unit to perform bi-directional conversion between TTL level data and RS-232C level data, and a computer for checking the operation of the system by generating a test data according to the test program. It includes a multi-serial data input and output unit for sending and receiving serial data between the computer and the computer.

Another feature of the present invention for achieving the above object is a storage device and a plurality of fixed devices and the storage means for sequentially storing the various data that can be generated in the portable device and the data for the control signal required for system operation in the system control device A protocol inspection method in a wireless private exchange system having a system controller for controlling fixed devices, the method comprising: accessing data stored in the storage means and analyzing the data by dividing it into message units according to a protocol of the wireless private exchange system A second process of transmitting each message interpreted in the process to a system controller through a corresponding one of the fixing devices, and a response message of the system control device corresponding to the message transmitted in the process; A third process for receiving the through the fixing device and And a fourth step of comparing whether or not the response message received in step 3 is the same as the digital signal interpreted in the first step.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

2 is a block diagram of a protocol inspection apparatus for a wireless private exchange according to the present invention, and a plurality of fixing devices F1 to Fm and a system controller SC for controlling the fixing devices F1 to Fm. It combines several test configurations with a wireless private exchange system equipped with a serial data input / output unit in each fixed device (F1 to Fm), which acts as a bidirectional conversion between TTL level data and RS-232C level data. Data matching unit 10 and a computer for checking the operation of the system by generating a test data according to the test program and the serial data transmission and reception between the data matching unit 10 and the computer (PC) It consists of a multi-line data input and output unit 20 for.

Referring to the preferred operation of the protocol inspection apparatus for a wireless private exchange according to the present invention configured as described above are as follows.

First of all, the inspection operating program used in the computer (PC) has several features, and the features of the inspection, as shown in FIG. 3, are input by the operating personnel to simulate the situation of the mobile device and the wireless control device. A context file input routine for reading a file that records messages for each situation, a context file analysis routine for splitting the input context file into message units defined in the protocol, and a message for each of the interpreted context files. It consists of a message transmission and reception routine for transmitting a message to the serial data input / output unit 20 and a message transmitted from the exchange side, and a transmission and reception message display routine for displaying messages transmitted and received on each port.

First, the operator who wants to inspect the system stores a message transmitted and received between the base station controller and each radio controller in a file corresponding to the system in a file written in the PC in any situation to be simulated.

The file stored in the above process is assigned to the transmission and reception port by the context file input routine of the simulator program and is accessed by the main memory device.

In the above process, the file accessed by the main memory device is divided into message units by the context file analysis routine, and it is first determined whether the message is to be transmitted or received, and to which port of the multi-serial data input / output unit 20 if the message is to be transmitted. In this case, the multi-serial data input / output unit 20 corresponds to a specific channel of the fixed device and determines the number of transmissions.

If it is determined that the message is to be received, it is determined to which port it should be received, and what action to take if the message is not received for a specified period of time between reception wait times. The message thus interpreted is passed to the transmission / reception routine to perform the appropriate transmission / reception related processing determined by the message interpretation routine.

In particular, the reception processing unit of the message transmission / reception routine is configured in an interrupt manner so that transmission and reception processing of each port is independently performed without interrupting the transmission / reception processing of other ports until message reception is completed to a specific port, thereby showing a multiprocessing effect. .

Sending / receiving to each port of the multi-serial data input / output unit 20 is performed in a message unit, and a message transmitted by a message transmission / reception routine of a simulation program is displayed on the screen in bytes by a transmission / reception message display routine to visually display a message. You can check the sending and receiving process.

In particular, the send and receive message display routines are included in the message send and receive routines and are performed in an interrupt manner. Data transmitted to a specific port of the multi-serial data input / output unit 20 by the message transmission / reception routine is converted from the PS-232C level to the TTL level by the data matching unit 10 and transmitted to the system controller SC through the fixing device. When transmitted, the system controller SC transmits a response message corresponding to the received data to the computer PC through the reverse process, and the simulation program interprets the received message and takes appropriate action.

In addition, when the handover situation is simulated, it is possible to know whether the radio private exchange performs handover properly by transmitting corresponding messages from the PC to the base station controller and the radio controller.

By providing a method and apparatus for checking a protocol for a wireless private exchange according to the present invention operating as described above to test the performance of the protocol to adapt to the system in the situation that does not actually implement a fixed device and a portable device without a separate simulation equipment There is an effect you can try.

Claims (2)

A protocol inspection apparatus in a wireless private exchange system having a plurality of fixed devices and a system control device for controlling the fixed devices, comprising: TTL level data and RS-232C connected to serial data input / output units in each fixed device. Data matching means serving as a bidirectional conversion between level data; A computer operating a test program and generating test data according to the test program to test the operation of the system; And a multi-serial data input / output unit for transmitting and receiving serial data between the data matching unit and a computer. And a storage means for sequentially storing various data that may occur in a portable device and data for a control signal required for system operation, a plurality of fixing devices, and a system control device for controlling the fixing devices. A protocol checking method in a wireless private exchange system, comprising: a first step of accessing data stored in the storage means and dividing the data into message units according to a protocol of a wireless private exchange system; A second step of transmitting each message interpreted in the above process to a system controller through a corresponding one of the fixing devices; A third step of receiving a response message of the system control device corresponding to the message transmitted in the step through the fixing device; And a fourth step of comparing whether or not the response message received in the step is identical to the data interpreted in the first step.