KR20000044473A - Method for testing application specific integrated circuit of exchange system for wireless linkage - Google Patents

Abstract

PURPOSE: A method for testing an Application Specific Integrated Circuit(ASIC) of an exchange system for wireless linkage is provided to increase an equipment's credibility by testing whether the ASIC being built in a wireless transceiver is normal. CONSTITUTION: A method for testing an Application Specific Integrated Circuit(ASIC) of an exchange system for a wireless system, comprises the steps of: checking whether a testing command is inputted for testing whether the ASIC is wrong; outputting data for measuring a line's error rate, to an input port of the ASIC in corresponding to the input of the testing command; calculating the line's error rate by being inputted a responding data through an output port of the ASIC; and deciding whether the ASIC is wrong, by comparing the calculated error rate with a predetermined standard value.

Description

AIZ test method in exchange system for wireless interworking

The present invention relates to a switching system, and more particularly, to a method of testing a wireless transceiver unit ASIC by measuring a line error rate (BER) between wirelessly interworking access devices.

FIG. 1 illustrates a connection operation of a general wireless interworking device. In order to wirelessly connect and operate an exchange network, a wireless interworking device 50 as shown in FIG. 1 is required. In Fig. 1, 10 represents a node switch and 40 represents a node controller. The radio interworking equipment 50 serves to enable radio interworking between the packet communication unit (PCU) 20 and the small switch 60 and enables radio interworking between the mobile radio base station 30. That is, the subscriber in the small switch 60 can talk to the subscriber in the set of mobile radio base stations 30 through the relay of the wireless interworking equipment 50.

The most important part of the wireless interworking device 50 may be called ASIC embedded in a large electronic transmission / receiving unit. The performance of the ASIC is directly related to the reliability of the wireless interworking device 50. Because of this, it is necessary to test the performance of AIZ whenever necessary.

Accordingly, an object of the present invention is to provide a method for ensuring the reliability of the equipment by testing whether or not the normality of the AICC embedded in the wireless transceiver in the device for interworking the switching network wirelessly.

In the present invention for achieving the above object, in the AIZ test method embedded in the wireless transceiver in the exchange system for wireless interworking,

A first step of checking whether there is a test command input for testing whether the AIDS is defective;

A second process of generating data for measuring a line error rate in response to a test command input and outputting the data to an input port of the AIZ;

A third process of receiving response data through the output port of AIZ to calculate a line error rate;

And a fourth step of determining whether the AIZ is defective by comparing the calculated error rate with a specified reference value.

1 is a connection operation of a typical wireless interlocking device.

2 is a block diagram of a wireless companion device according to an embodiment of the present invention.

3 is an ASIC (Application Specific Integrated Circuit) test flow chart according to an embodiment of the present invention.

Hereinafter, an operation according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a wireless companion device according to an embodiment of the present invention. Referring to FIG. 2, the main controller 112 is a module that is in charge of controlling the wireless interworking device 50 and includes a central processing unit, a memory, and peripheral logic. The memory comprises a ROM for storing a control program as shown in FIG. 3 and a RAM for temporarily storing data generated during a control operation. Main functions of the main control unit 112 are responsible for system operation and front panel control by the accumulated program control method, and perform wireless data setting and self-diagnostic functions.

The tuning unit 102 detects and outputs only a signal of a specific frequency band among the radio signals received through the antenna, and the demodulation unit 104 converts the signal output from the tuning unit 102 to a demodulating level and out-of-band signal The filter outputs the generated baseband signal to the anti-WW receiver 106. The anti-electronic warfare receiving unit 106 is responsible for signal processing of the spreading signal band and the baseband of the receiving unit of the DS (Direct Sequence) spread spectrum communication system.

The link connection unit 108 is responsible for wired matching and transmission functions for wireless connection between wired devices. The clock generator 110 generates and supplies a system clock of 1024 KHz.

The other short-circuit unit 114 serves to make a smooth call between the operators by calling the operator of the equipment connected to the adjacent or the same circuit connected to the wireless interworking equipment 50 or the call of the other party. The power supply unit 116 converts the power supplied through the power supply cable into power that can be used in the equipment and supplies the power.

The anti-electric warfare transmitter 118 is responsible for signal processing of the spreading signal band and the baseband of the transmitter of the DS spread spectrum communication system. The modulator 120 modulates the baseband signal input from the anti-electric warfare transmitter 118, converts the baseband signal into a carrier frequency, and outputs it to the power amplifier 122.

The power amplifier 122 receives a signal output from the modulator 120 to reduce signal phase distortion due to intermodulation and linearly amplifies to a level at which communication is possible.

Meanwhile, FIG. 3 illustrates an ASIC test flowchart according to an embodiment of the present invention.

Hereinafter, with reference to FIGS. 2 and 3, the ASIC test method embedded in the anti-electric warfare transceiver 106 and 118 according to the embodiment of the present invention will be described in detail.

First, the system designer constructs a menu for testing ASIC embedded in the electronic warfare transmitting and receiving units 106 and 118. An example of such a menu is a data pattern for testing ASIC's performance. In other words, after the data pattern is applied to the AIZ, the AC's performance can be tested with the output signal of the AIZ. This will be described in detail with reference to FIG. 3. First, the main control unit 112 checks whether there is an input of a test command through the front panel in step 200, and proceeds to step 210 if there is a test command. In operation 210, the main control unit 112 checks the state of the anti-WW transmission unit 118 and checks the state of the anti-WW receiver 106 in the normal state in step 220. As a result of the check, if the state of the electronic warfare receiving unit 106 is normal, the main controller 112 proceeds to step 230 and proceeds to step 230 to generate data for measuring a line error rate (BER) and writes the data to a predetermined I / O. In operation 250, the main controller 112 proceeds to step 240 and reads whether the measured line error rate BER has a value of "0" after a predetermined time after reading a predetermined I / O for measuring the line error rate (BER). Check it. If the value of the measured line error rate (BER) is "0", the main control unit 112 proceeds to step 260 to determine the performance of the ASIC embedded in the anti-electric warfare transceivers 118 and 106 as a normal state. Otherwise, the ASIC is determined to be in a defective state in step 270. AJ, determined to be in bad condition, can be delivered to the operator through a monitoring process.

Accordingly, the operator can check the state of the wireless interworking equipment through the test results of ASIC embedded in the electronic warfare transceiver.

As described above, since the present invention can easily check whether the ASIC, which is a key component of the electronic warfare transmission and reception unit provided in the wireless interworking equipment, can be easily checked, the error of the wireless interworking device due to the ASIC defect. There is an advantage that can be prevented in advance.

Claims (2)

In the AIZ test method embedded in the wireless transceiver in a switching system for wireless interworking, A first step of checking whether there is a test command input for testing whether the AIDS is defective; A second process of generating data for measuring a line error rate in response to a test command input and outputting the data to an input port of the AIZ; A third process of receiving response data through the output port of AIZ to calculate a line error rate; And a fourth step of determining whether the AIDS is defective by comparing the calculated error rate with a designated reference value. The method of claim 1, further comprising a fifth step of displaying the fail status of the AIZ when the calculated error rate is greater than or equal to a reference value.