KR100462874B1 - Base station having JIG Mode function - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base station having a jig mode function, and more particularly to a base station having a jig mode function that enables the base station itself to perform performance or functional verification of a digital European wireless communication base station. A base station having such a jig mode function includes an oscillator for generating a predetermined clock, a logic element for receiving a clock generated by the oscillator, and generating a specific clock required by a specific chip, and a specific generated from the logic element. By supplying the clock to the chip that needs it, it can operate without an external system clock input. Therefore, there is an advantage in that the base station performance can be tested even when not connected to the radio switching system.

Description

Base station having JIG mode function {Base station having JIG Mode function}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base station having a jig mode function, and more particularly to a base station having a jig mode function that enables the base station itself to perform performance or functional verification of a digital European wireless communication base station.

The national exchange is the central nerve of the national telecommunication, which is installed to provide the convenience of the whole nation, and the users are targeted to the nation. The private exchange or the application communication system serves the subscribers of the single station, the lowest station of the public communication network.

Private exchanges are used mainly in places where there are a lot of station subscribers, such as hotels, department stores, government offices, and large corporations, and where there is a lot of inter-office communication.

Private exchanges provide automatic call distribution, conference calls, emergency call nights, transfers, databases, and mail services in addition to general switched access.

As described above, a private exchange is used to connect and connect to each other by using a private communication network to enable mutual call between subscribers.

Private exchanges are used to support wired telecommunications services on the premises, and provide wired and mobile telecommunications services on the premises, such as digital European cordless telecommunication (hereinafter abbreviated as DECT). There is a wireless private exchange system with over and auto roaming.

DECT is a European digital radiotelephone that uses the 1.8 GHz frequency band and was first set by the European Telecommunication Standards Institute (ETSI) for time division multiple access. Added automatic roaming function. It is also widely used in South America, China and Eastern Europe.

Hereinafter, a conventional digital European wireless communication system will be described with reference to the accompanying drawings.

1 is a block diagram illustrating a general digital European wireless communication (DECT) system.

A general DECT system is configured in a conventional wireless switching system 10 and a wireless switching system 10 as shown in FIG. 1 to provide time-division multiple access frames based on time division multiple access (TDMA) / time division multiplexing (TDM). DECT line card (10a) that supports modulation and demodulation, encryption, and cyclic redundancy check, and DECT terminals (30, 40) and DECT wireless switching system connected to the line card (10a) And a DECT base station 20 and a DECT terminal 30, 40 for servicing radio communication between the two.

In such a general DECT system, digital-related functional tests such as RF performance test or call test for the DECT base station 20 were performed by the radio switching system 10 online with the DECT base station 20.

At least one line card 10a is configured in the radio switching system 10 (K / P system or private exchange (PBX)) for supporting such a DECT, and each line card 10a includes a plurality of DECT base stations. 20 may be supported, and one DECT base station 20 may accommodate a plurality of subscribers (DECT terminals 30 and 40).

The DECT base station 20 services wireless communication between the DECT terminals 30 and 40 and the DECT wireless switching system 10. A digital related functional test such as an RF performance test or a call test for the DECT base station 20 is performed by the DECT base station. 20 and the DECT radio switching system 10 were executed in the DECT radio switching system 10 while online.

That is, in addition to the function that operates in conjunction with the DECT wireless switching system 10 in testing the performance of the DECT base station 20, RF performance test for verifying only the DECT base station 20 itself or verification of hardware functions in the DECT base station 20. Confirm was also necessarily performed in the DECT radio switching system 10.

The reason for this is that a chip (for example, time division multiple access / time division multiplexing (TDMA / TDM)) operated according to a synchronization clock provided by the DECT radio switching system 10 is provided inside the DECT base station 20. This is because there is a chip that performs modulation / demodulation, encryption, and cyclic redundancy check for time division multiple access frames.

In this case, in order to construct a DECT wireless switching system having a multi-cell in an indoor environment, it is determined to increase efficiency in terms of performance / functionality according to the location of the base station, that is, how each cell is configured. To test the performance of a DECT base station, a complete DECT radio switching system as well as a DECT base station must be in place.

Therefore, when the DECT base station is not connected to the DECT radio switching system, there are the following problems.

First, RF performance tests of the DECT base station or errors in the digital part cannot be verified without the DECT radio switching system.

Second, it is impossible to test the call with the DECT terminal, and it is impossible to monitor the received electric field strength of the base station.

Third, there is a problem that the movement is complicated when designing a cell and the location is restricted.

An object of the present invention for solving the problems described above is a jig (JIG) that can perform the RF performance and cell design of the DECT base station even if the base station, especially the DECT base station is not on-line with the radio switching system (JIG) The present invention provides a base station having a mode function.

1 is a block diagram illustrating a general digital European wireless communication system;

2 is a block diagram showing a part of a configuration of a digital European wireless communication (DECT) base station according to the present invention;

3 is a view for explaining a specific clock providing method for driving a chip of the DECT base station according to the present invention.

An object of the present invention for achieving the above object is an oscillator for generating a predetermined clock, a logic element for receiving a clock generated by the oscillator to generate a specific clock required by a specific chip (chip), and in the logic element By supplying a specific generated clock to a chip that requires it, it has a jig mode function that can operate without an external system clock input.

Preferably, between the logic element and the specific chip, a first buffer configured to supply a clock generated by the logic element to the chip according to the jig mode, and a second buffer configured to supply the external system clock to the chip. do.

The above object and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art. The preferred embodiment according to this is described.

FIG. 2 is a block diagram showing some components of a digital European wireless communication (DECT) base station according to the present invention, and FIG. 3 is a view for explaining a specific clock providing method for driving a chip of the DECT base station according to the present invention. .

FIG. 2 illustrates a method of generating a synchronous clock and providing the clock to a chip that requires the DECT base station as shown in FIG. 1 to operate on its own. The wireless switching system (K / P system, private exchange) Synchronous clocks (PBX) are created by the DECT base station itself and provided to each chip (CHIP) where these clocks are needed.

To this end, in the present invention, the oscillator (for example, crystal oscillator) 50 in the DECT base station and the erasing and programmable logic that receives the output of the oscillator 50 and generates a specific clock required by the DECT base station. An erasable programmable logic device (60) is constructed and provided to the chip 70, which requires a specific clock. In this case, the chip 70 requiring a specific clock may perform a performance test on the DECT RF module 80 that receives the specific clock from the EPLD 60 and processes the radio frequency of the DECT base station.

The DECT base station operates after receiving a clock from the DECT radio switching system after the performance test.

Therefore, as shown in FIG. 3, a configuration for controlling to operate by receiving one of a clock generated in the EPLD 60 in the DECT base station or a system clock provided in the DECT wireless switching system is required.

For this control, in the present invention, as shown in FIG. 3, the control unit 110 including the first and second buffers 90 and 100 is configured between the EPLD 60 and the chip 70 requiring a specific clock.

In this case, the first buffer 90 may or may not generate a specific clock generated in the EPLD 60 according to the signal generated in the jig mode.

If the JIG MODE is controlled to be LOW, then the first buffer 90 is enabled so that the clock source produced by the EPLD 80 requires the respective clock to be input to the chip 70. Will enter.

On the contrary, when the JIG MODE is controlled to 'HIGH', the second buffer 100 is enabled to receive the system clock in the wireless switching system to operate in the on-line state.

Although the preferred embodiments of the present invention have been described in detail above, those skilled in the art will appreciate that the present invention may be modified without departing from the spirit and scope of the invention as defined in the appended claims. It will be appreciated that modifications or variations may be made. Therefore, changes in the future embodiments of the present invention will not be able to escape the technology of the present invention.

The present invention as described above has the following effects.

First, the on-line mode and jig mode can be selected and used to verify the RF performance test of the DECT base station or errors in the digital part without the need for a radio switching system (K / P system, PBX).

Second, call test with DECT terminal is possible.

Third, since the wireless exchange system is unnecessary when designing the cell, the cell design can be performed in an indoor environment, and thus the strength of the electric field strength can be measured even in a narrow space.

Fourth, it is possible to monitor the data coming from the DECT terminal using the serial port of the DECT base station.

Fifth, the DECT can be used to support a system design using a multi-cell (multi-cell), single cell.

Claims (2)

An oscillator for generating a constant clock; A logic device that receives a clock generated by the oscillator and generates a specific clock required by a specific chip; And And a control unit having a jig mode function operable without an external system clock input between the logic element and a specific chip. The method of claim 1, wherein the control unit A first buffer configured to supply a clock generated by the logic device to the chip according to the jig mode; And a second buffer configured to supply the external system clock to the chip.