KR20000073675A - Reception measuring apparatus of base station in the communication system and method thereof - Google Patents

Reception measuring apparatus of base station in the communication system and method thereof Download PDF

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Publication number
KR20000073675A
KR20000073675A KR1019990017114A KR19990017114A KR20000073675A KR 20000073675 A KR20000073675 A KR 20000073675A KR 1019990017114 A KR1019990017114 A KR 1019990017114A KR 19990017114 A KR19990017114 A KR 19990017114A KR 20000073675 A KR20000073675 A KR 20000073675A
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South Korea
Prior art keywords
base station
terminal
variable attenuator
communication system
station
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KR1019990017114A
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Korean (ko)
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이상용
정재호
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김영환
현대전자산업 주식회사
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Priority to KR1019990017114A priority Critical patent/KR20000073675A/en
Publication of KR20000073675A publication Critical patent/KR20000073675A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/06—Testing, supervising or monitoring using simulated traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
    • H04B17/0085—Monitoring; Testing using service channels; using auxiliary channels using test signal generators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/50—Testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Abstract

PURPOSE: A method for measuring a receiving sensitivity of a base transceiver station(BTS) in a communication system is provided to measure the receiving sensitivity through a testing terminal mounted on the BTS, a variable attenuator in a BTS diagnostic terminal unit(BDTU), and a radio frequency(RF) processor in an unmanned method, so as to maintain an optical state of a BTS system. CONSTITUTION: A base transceiver station(BTS) diagnostic terminal unit(BDTU) firstly sets up an attenuating value of a variable attenuator, and measures attenuating values between a testing terminal and a radio frequency(RF) processor to store the attenuating values(S1). The BDTU connects a testing call capable of measuring a receiving state to the testing terminal, and turns off a power controlling function not to change a transmission output of the testing terminal(S2). A transcoder block(TSB) of a control station analyzes receiving data received in the control station(S3), and decides whether the receiving data is superior(S4). If so, the TSB increases an attenuating value of the variable attenuator as one step until the receiving data is inferior, and continuously analyzes the receiving data(S5). If the receiving data is inferior, the TSB adds the attenuating values between the testing terminal and the RF processor to the attenuating value of the variable attenuator, and measures a receiving sensitivity of the final BTS(S6).

Description

통신 시스템내 기지국의 수신 감도 측정장치 및 방법 {Reception measuring apparatus of base station in the communication system and method thereof}Reception measuring apparatus of base station in the communication system and method

본 발명은 디지털 셀룰라 시스템(Digital Cellular System ; 이하, 'DCS'라 칭함), 개인 휴대통신 시스템(Personal Communication System ; 이하, 'PCS'라 칭함) 등의 CDMA(Code Division Multiple Access) 방식을 적용한 통신 시스템의 기지국에 있어서, 기지국내에 시험용 단말기를 장착하고 이 단말기와 RF(Radio Frequency) 처리부 사이에 연결된 기지국 진단부인 BDTU(BTS Diagnostic Terminal Unit)의 가변 감쇄기를 통해 단말기의 송신 출력을 일정하게 처리한 후 가변 감쇄기의 감쇄값을 증가시키면서 기지국의 수신 감도를 무인으로 측정함으로써 기지국 시스템의 상태를 원격으로 감지하여 시스템 운용에 반영시켜 줄 수 있도록 한 통신 시스템내 기지국의 수신 감도 측정장치 및 방법에 관한 것이다.The present invention is a communication using a code division multiple access (CDMA) scheme such as a digital cellular system (hereinafter referred to as "DCS") and a personal communication system (hereinafter referred to as "PCS"). In the base station of the system, a test terminal is mounted in a base station, and the transmission output of the terminal is uniformly processed through a variable attenuator of a BDTU (BTS Diagnostic Terminal Unit), which is a base station diagnostic unit connected between the terminal and a radio frequency (RF) processor. The present invention relates to an apparatus and a method for measuring a reception sensitivity of a base station in a communication system to remotely detect a state of the base station system and reflect the system operation by unattended measuring the reception sensitivity of the base station while increasing the attenuation value of the variable attenuator. .

종래에는 기지국의 수신 감도 측정을 위해 운용자가 직접 측정에 필요한 각종 장비를 가지고 기지국을 방문한 뒤 측정 장비를 설정하고 일일이 수동으로 각 기지국의 수신 감도를 측정하였다.Conventionally, an operator visits a base station with various equipment necessary for direct measurement to measure the reception sensitivity of the base station, sets the measurement equipment, and manually measures the reception sensitivity of each base station.

그러나, 상기와 같은 종래 기지국의 수신 감도 측정방법은 운용자가 직접 기지국을 방문하여 일일이 확인해야 하므로 측정이 번거로울 뿐만 아니라 인력과 시간적으로 낭비되는 요인들이 많이 있고, 기지국 시스템의 노후 등으로 인한 기지국 시스템의 특성 변화에 대해서도 즉각적인 대응을 취하지 못하게 되는 문제점이 있었다.However, the conventional method of measuring the reception sensitivity of the base station as described above is not only cumbersome because the operator visits the base station directly, but also has a lot of labor and time waste, and the base station system due to the aging of the base station system There was a problem that it is not possible to take an immediate response to the characteristic change.

본 발명은 상기와 같은 문제점을 해결하기 위해 안출한 것으로서, 그 목적은 DCS, PCS 등의 CDMA 방식을 적용한 통신 시스템의 기지국내에 시험용 단말기를 장착하고 이 단말기와 RF 처리부 사이에 연결된 BDTU의 가변 감쇄기를 통해 단말기의 송신 출력을 일정하게 처리한 후 가변 감쇄기의 감쇄값을 증가시키면서 기지국의 수신 감도를 무인으로 측정함으로써 기지국 시스템의 상태를 원격으로 감지하여 시스템 운용에 반영시켜 줄 수 있도록 한 통신 시스템내 기지국의 수신 감도 측정장치 및 방법을 제공하는 데에 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to mount a test terminal in a base station of a communication system employing a CDMA method such as DCS, PCS, etc. and a variable attenuator of a BDTU connected between the terminal and the RF processor. In the communication system, the transmission output of the terminal is constantly processed and then the reception sensitivity of the base station is measured unattended while increasing the attenuation value of the variable attenuator. The present invention provides an apparatus and method for measuring reception sensitivity of a base station.

도 1은 본 발명에 의한 통신 시스템내 기지국의 수신 감도 측정장치의 블록 구성도,1 is a block diagram of a reception sensitivity measuring apparatus of a base station in a communication system according to the present invention;

도 2는 본 발명에 의한 통신 시스템내 기지국의 수신 감도 측정장치의 동작을 보인 흐름도.Figure 2 is a flow chart showing the operation of the reception sensitivity measuring apparatus of the base station in the communication system according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10 : 기지국 11 : 단말기10: base station 11: terminal

12 : BDTU13 : 가변 감쇄기12: BDTU13: variable attenuator

14 : RF 처리부 20 : 제어국14: RF processing unit 20: control station

21 : TSB30 : 교환기21: TSB30: exchanger

이러한 목적을 달성하기 위한 본 발명의 통신 시스템내 기지국의 수신 감도 측정장치 및 방법은, 기지국내에 시험용 단말기를 장착한 후 BDTU내 가변 감쇄기의 감쇄값이 최소인 경우에 상기 단말기와 RF 처리부간의 감쇄값을 측정하여 저장하여 두고, 상기 단말기에 시험호를 설정한 후 제어국내 TSB에서 단말기의 수신 데이터를 분석하여 그 결과 수신 데이터가 양호하면 가변 감쇄기의 감쇄값을 증가시켜 계속 수신 데이터를 분석하고, 상기 수신 데이터가 불량하면 상기 저장된 감쇄값과 현재 가변 감쇄기의 감쇄값을 더하여 기지국의 수신 감도를 측정하도록 함을 특징으로 한다.Receiving sensitivity measuring apparatus and method of the base station in the communication system of the present invention for achieving this object, the attenuation between the terminal and the RF processing unit when the attenuation value of the variable attenuator in the BDTU is minimal after the test terminal is mounted in the base station After measuring and storing the value, after setting a test call to the terminal, TSB in the control station analyzes the received data of the terminal. If the received data is good, the attenuation value of the variable attenuator is increased, and the received data is continuously analyzed. When the received data is poor, the stored attenuation value and the attenuation value of the present variable attenuator are added to measure the reception sensitivity of the base station.

이하, 첨부된 도면을 참고하여 본 발명에 의한 통신 시스템내 기지국의 수신 감도 측정장치의 구성 및 측정방법을 상세히 설명한다.Hereinafter, a configuration and measuring method of a reception sensitivity measuring apparatus of a base station in a communication system according to the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 의한 통신 시스템내 기지국의 수신 감도 측정장치의 블록 구성도로서, 통신 시스템에서 가입자 단말기(도시하지 않음)와의 실제적인 인터페이스를 수행하는 기지국(10)과, 상기 기지국(10)과 교환기(30)간의 인터페이스를 수행하는 제어국(20)과, 상기 제어국(20)과 연결되어 일반적으로 사용되고 있는 시내 전화망 등을 포함하는 공중전화망의 교환기(30)로 구성된다.1 is a block diagram of an apparatus for measuring a reception sensitivity of a base station in a communication system according to the present invention. The base station 10 performs an actual interface with a subscriber station (not shown) in the communication system, and the base station 10 And a control station 20 for performing an interface between the switch and the exchange 30, and a switch 30 of a public telephone network including a local telephone network generally used in connection with the control station 20.

상기 기지국(10)에는 기지국(10)의 수신 감도를 측정하기 위해 사용되는 시험용 단말기(11)와, 상기 단말기(11)와 RF 처리부(14)간의 RF 신호를 연결한 후 가변 감쇄기(13)를 통해 상기 단말기(11)의 송신 출력이 RF 처리부(14)에 의해 강하게 또는 약하게 수신되도록 조절하는 BDTU(12)와, 기지국(10)의 RF 신호를 처리하는 RF 처리부(14)가 포함되어 구성되어 있다.The base station 10 is connected to the test terminal 11 used to measure the reception sensitivity of the base station 10, the RF signal between the terminal 11 and the RF processor 14, and then a variable attenuator 13 BDTU 12 for adjusting the transmission output of the terminal 11 so as to be received by the RF processor 14 strongly or weakly, and RF processor 14 for processing the RF signal of the base station 10 is configured to include have.

그리고, 상기 제어국(20)에는 음성 및 데이터 처리 블록으로, 교환기(30)에서 출력되는 PCM(Pulse Code Modulation) 데이터를 통신 시스템에서 사용하는 QCELP(Qualcomm Code Excited Linear Prediction) 또는 EVRC 데이터로 변환시켜 주거나 단말기(11)의 송신 출력을 분석하여 얼마나 정확한 수신이 이루어졌는지 확인할 수 있는 TSB(TranScoder Block)(21)가 포함되어 구성되어 있다.In addition, the control station 20 converts PCM (Pulse Code Modulation) data output from the exchanger 30 into QCELP (Qualcomm Code Excited Linear Prediction) or EVRC data used in a communication system. Or a TranScoder Block (TSB) 21 capable of checking how accurate the reception was made by analyzing the transmission output of the terminal 11.

상기와 같이 구성된 본 발명에 의한 통신 시스템내 기지국의 수신 감도 측정장치에서의 동작을 도 2의 흐름도를 참조하여 설명하면 다음과 같다.The operation of the reception sensitivity measuring apparatus of the base station in the communication system according to the present invention configured as described above will be described with reference to the flowchart of FIG. 2.

먼저, 기지국(10)내 BDTU(12)에서는 가변 감쇄기(13)의 감쇄값을 최소로 설정한 후에 기지국(10)내 시험용 단말기(11)와 RF 처리부(14)간의 감쇄값을 측정하여 저장하여 둔다(S1).First, the BDTU 12 in the base station 10 sets the attenuation value of the variable attenuator 13 to a minimum, and then measures and stores the attenuation value between the test terminal 11 in the base station 10 and the RF processor 14. (S1).

이어, 상기 단말기(11)로 수신 상태를 측정할 수 있는 호인 시험호를 건 후 단말기(11)의 송신 출력이 변하지 않도록 전력 제어 기능을 꺼 놓는다(S2).Subsequently, after the test call, which is a call capable of measuring a reception state, is placed in the terminal 11, the power control function is turned off so that the transmission output of the terminal 11 does not change (S2).

이후, 제어국(20)내 TSB(21)에서 상기 단말기(11)가 송신한 데이터, 즉 제어국(20)에 수신된 수신 데이터를 분석하여(S3) 수신 데이터의 상태가 양호한지 그 양호 여부를 판단한다(S4).Thereafter, the TSB 21 in the control station 20 analyzes the data transmitted by the terminal 11, that is, the received data received by the control station 20 (S3), and whether the received data is in good condition. Determine (S4).

상기 단계(S4)에서의 판단 결과 수신 데이터가 양호하면 수신 데이터가 불량이 될 때까지 가변 감쇄기(13)의 감쇄값을 한 단계씩 증가시킨 후 계속해서 수신 데이터를 분석하고(S5), 만약 상기 수신 데이터가 불량하면 상기 단계(S1)에서 저장된 단말기(11)와 RF 처리부(14)간의 감쇄값과 현재의 가변 감쇄기(13)의 감쇄값을 더하여 최종 기지국(10)의 수신 감도를 측정하도록 한다(S6).If the received data is good as a result of the determination in step S4, the attenuation value of the variable attenuator 13 is increased by one step until the received data is bad, and then the received data is analyzed continuously (S5). If the received data is bad, the reception sensitivity of the final base station 10 is measured by adding the attenuation value between the terminal 11 and the RF processor 14 stored in the step S1 and the attenuation value of the current variable attenuator 13. (S6).

이상, 상기 설명에서와 같이 본 발명은 기지국 시스템의 수신 감도를 기지국에 장착되는 시험용 단말기와 BDTU내 가변 감쇄기 및 RF 처리부를 통해 무인으로 측정하여 이를 시스템 운용에 반영시켜 줌으로써 기지국 시스템의 상태를 항상 최적의 상태로 유지할 수 있으며, 운용자가 직접 기지국을 방문하여 기지국 시스템의 성능을 확인하는데 따른 비용을 절감할 수 있고 시스템의 경쟁력 향상 및 이동통신 가입자들에 대한 이미지 제고에도 긍적적인 효과가 있다.As described above, the present invention always optimizes the state of the base station system by measuring the reception sensitivity of the base station system unattended through a test terminal mounted on the base station, a variable attenuator in the BDTU, and an RF processing unit and reflecting it to the system operation. It can be maintained in the state of, and the operator can directly visit the base station to reduce the cost of verifying the performance of the base station system, and has a positive effect on improving the system competitiveness and image of the mobile subscribers.

Claims (2)

가입자 단말기와의 실제적인 인터페이스를 수행하는 기지국과, 상기 기지국과 교환기간의 인터페이스를 수행하는 제어국과, 상기 제어국과 연결되어 일반적으로 사용되고 있는 시내 전화망 등을 포함하는 공중전화망의 교환기로 구성되는 통신 시스템에서의 기지국의 수신 감도 측정장치에 있어서,And a base station performing an actual interface with a subscriber station, a control station performing an interface between the base station and an exchange period, and a public telephone network switch including a local telephone network generally used in connection with the control station. In the reception sensitivity measuring apparatus of a base station in a communication system, 상기 기지국이 기지국의 수신 감도를 측정하기 위해 사용되는 시험용 단말기와, 상기 단말기와 RF 처리부간의 RF 신호를 연결한 후 가변 감쇄기를 통해 상기 단말기의 송신 출력이 RF 처리부에 의해 강하게 또는 약하게 수신되도록 조절하는 BDTU와, 기지국의 RF 신호를 처리하는 RF 처리부를 포함하여 구성되고, 상기 제어국이 교환기에서 출력되는 PCM 데이터를 통신 시스템에서 사용하는 QCELP 또는 EVRC 데이터로 변환시켜 주거나 단말기의 송신 출력을 분석하여 얼마나 정확한 수신이 이루어졌는지 확인할 수 있는 TSB를 포함하여 구성됨을 특징으로 하는 통신 시스템내 기지국의 수신 감도 측정장치.The base station connects the test terminal used to measure the reception sensitivity of the base station and the RF signal between the terminal and the RF processing unit, and then adjusts the transmission output of the terminal to be strongly or weakly received by the RF processing unit through a variable attenuator. BDTU, and RF processing unit for processing the RF signal of the base station, the control station converts the PCM data output from the switch to the QCELP or EVRC data used in the communication system or how to analyze the transmission output of the terminal Receiving sensitivity measuring device of a base station in a communication system, characterized in that it comprises a TSB that can determine whether the correct reception was made. 가입자 단말기와의 실제적인 인터페이스를 수행하는 기지국과, 상기 기지국과 교환기간의 인터페이스를 수행하는 제어국과, 상기 제어국과 연결되어 일반적으로 사용되고 있는 시내 전화망 등을 포함하는 공중전화망의 교환기로 구성되는 통신 시스템에서의 기지국의 수신 감도 측정방법에 있어서,And a base station performing an actual interface with a subscriber station, a control station performing an interface between the base station and an exchange period, and a public telephone network switch including a local telephone network generally used in connection with the control station. In the reception sensitivity measurement method of a base station in a communication system, 기지국의 BDTU내 가변 감쇄기의 감쇄값을 최소로 설정한 후에 단말기와 RF 처리부간의 감쇄값을 측정하여 저장하는 제1단계와, 상기 제1단계 수행 후, 상기 단말기에 시험호를 설정한 후에 제어국내 TSB에서 단말기의 수신 데이터를 분석하는 제2단계와, 상기 제2단계의 분석 결과 수신 데이터가 양호하면 수신 데이터가 불량이 될 때까지 가변 감쇄기의 감쇄값을 증가시켜 계속 수신 데이터를 분석하는 제3단계와, 상기 제2단계의 분석 결과 수신 데이터가 불량하면 상기 제1단계에서 저장된 단말기와 RF 처리부간의 감쇄값과 현재 가변 감쇄기의 감쇄값을 더하여 기지국의 수신 감도를 측정하는 제4단계로 이루어짐을 특징으로 하는 통신 시스템내 기지국의 수신 감도 측정방법.The first step of setting the attenuation value of the variable attenuator in the BDTU of the base station to the minimum, and measuring and storing the attenuation value between the terminal and the RF processor, and after setting the test call to the terminal after performing the first step, in the control station A second step of analyzing the received data of the terminal by the TSB; and a third step of analyzing the received data by increasing the attenuation value of the variable attenuator until the received data is bad if the received data is good as a result of the analysis of the second step. And a fourth step of measuring the reception sensitivity of the base station by adding the attenuation value between the terminal and the RF processor stored in the first step and the attenuation value of the current variable attenuator if the received data is poor as a result of the analysis of the second step. Receiving sensitivity measurement method of a base station in a communication system characterized in that.
KR1019990017114A 1999-05-13 1999-05-13 Reception measuring apparatus of base station in the communication system and method thereof KR20000073675A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020072115A (en) * 2001-03-09 2002-09-14 에스케이 텔레콤주식회사 Method for Image Display According to the Received Signal of Traffic Channel in Radio Communication System

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020072115A (en) * 2001-03-09 2002-09-14 에스케이 텔레콤주식회사 Method for Image Display According to the Received Signal of Traffic Channel in Radio Communication System

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