KR20010057715A - Base station transmission power measuring method of mobile communication system - Google Patents

Base station transmission power measuring method of mobile communication system Download PDF

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Publication number
KR20010057715A
KR20010057715A KR1019990061103A KR19990061103A KR20010057715A KR 20010057715 A KR20010057715 A KR 20010057715A KR 1019990061103 A KR1019990061103 A KR 1019990061103A KR 19990061103 A KR19990061103 A KR 19990061103A KR 20010057715 A KR20010057715 A KR 20010057715A
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South Korea
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base station
transmission power
power
value
mobile communication
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KR1019990061103A
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Korean (ko)
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이상용
김대홍
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박종섭
주식회사 하이닉스반도체
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Priority to KR1019990061103A priority Critical patent/KR20010057715A/en
Publication of KR20010057715A publication Critical patent/KR20010057715A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
    • H04B7/15542—Selecting at relay station its transmit and receive resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
    • H04B7/15535—Control of relay amplifier gain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/52—TPC using AGC [Automatic Gain Control] circuits or amplifiers

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE: A method for measuring transmission power of a base station in a mobile communication system is provided to reduce a measurement band width of hardware that detects the power, by classifying a base station type according to cell coverage, and thereby making the power measured via an attenuator. CONSTITUTION: The type of the base station is classified(S1). It is determined whether the transmission power of the base station is high(S2). The attenuator is inserted between a base station power transmission part and a transmission power measurement part if the transmission power of the base station is high(S3). A transmission power value measured by the transmission power measurement part is added to an attenuated value, and thereby a real transmission power value is obtained(S4). If the transmission power of the base station is not high, the transmission power measurement part receives a signal directly from the base station power transmission part, not through the attenuator, and then measures the transmission power(S5). The transmission power value is transmitted(S6).

Description

이동 통신 시스템의 기지국 송신 전력 측정 방법 {Base station transmission power measuring method of mobile communication system}Base station transmission power measuring method of mobile communication system

본 발명은 이동 통신 시스템에 관한 것으로, 특히 이동 통신 시스템에서 기지국의 송신 전력을 보다 용이하게 측정할 수 있도록 하는 이동 통신 시스템의 기지국 송신 전력 측정 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system, and more particularly, to a method for measuring base station transmit power of a mobile communication system, which makes it easier to measure the transmit power of a base station in a mobile communication system.

일반적인 이동 통신 시스템은 도 1에 도시한 바와 같이, 무선 단말기와의 실제적인 인터페이스를 수행하는 복수개의 기지국(1-1 ~ 1-n), 상기 기지국을 제어하기 위한 제어국(2), PSTN으로 일반적으로 쓰이는 전화망과 연결되는 교환기(3), 및 상기 기지국(1-1 ~1-n)과 제어국(2)의 상태 감시 및 제어를 수행하는 기지국 관리부(4)로 구성된다.As shown in FIG. 1, a general mobile communication system includes a plurality of base stations 1-1 to 1-n that perform an actual interface with a wireless terminal, a control station 2 for controlling the base station, and a PSTN. A switch 3 connected to a telephone network generally used, and a base station manager 4 which monitors and controls the base stations 1-1 to 1-n and the control station 2.

이와 같은 종래의 이동 통신 시스템에서, 기지국의 송진 전력을 확인하기 위하여 상기 기지국(1-1 ~ 1-n)내의 기지국 시험 장치(미도시)를 사용하여 기지국의 송신 전력을 측정하게 된다.In such a conventional mobile communication system, the transmission power of the base station is measured by using a base station test apparatus (not shown) in the base stations 1-1 to 1-n in order to confirm the transmission power of the base station.

그런데, 상기 송신 전력을 측정하기 위한 장치는 복수개의 기지국에서 출력되는 송신 전력값 중 최소 전력값과 최대 전력값 사이의 범위를 모두 포함할 수 있는 대역폭을 갖는 전력 감지 하드웨어를 설계하여야 했다.However, the apparatus for measuring the transmission power had to design a power sensing hardware having a bandwidth that can include a range between the minimum power value and the maximum power value of the transmission power values output from a plurality of base stations.

그러나, 이의 구현은 매우 까다롭고 어려울 뿐만 아니라, 구현하는데 있어서도 보다 고가의 부품과 보다 많은 회로 부품을 필요로 하는 문제점이 있었다.However, the implementation thereof is not only very demanding and difficult, but also has a problem of requiring more expensive components and more circuit components.

또한, 넓은 대역폭을 측정해야 함에따라 전력 감지 하드웨어의 특성상의 차이가 생산상에서도 민감한 요소를 작용하였다.In addition, due to the wide bandwidth measurement required, differences in the characteristics of the power-sensing hardware were also sensitive to production.

이와 같은 문제점을 해결하기 위하여, 본 발명은 기지국 타입을 셀 반경에 따라 분류하여 각 타입에 따라 소정의 감쇄기를 거쳐 송신 전력을 측정하도록 하여 전력을감지하는 하드웨어의 측정 대역폭을 줄일 수 있도록 하는 이동 통신 시스템의 기지국 송신 전력 측정 방법을 제공하는데 그 목적이 있다.In order to solve this problem, the present invention classifies the base station type according to the cell radius to measure the transmission power through a predetermined attenuator according to each type to reduce the measurement bandwidth of the hardware for detecting power It is an object of the present invention to provide a method for measuring a base station transmit power of a system.

상기의 목적을 달성하기 위한 본 발명은 이동 통신 시스템에 있어서, 기지국 셀 반경에 따라 기지국의 타입을 구분하는 과정과; 반경이 큰 기지국인 경우 실제 기지국 전력을 소정 값만큼 감쇄시켜 측정하는 과정과; 상기 측정된 값으로부터 실제 기지국 전력값을 계산하여 이를 전송하는 과정을 포함하여 이루어지는 것을 특징으로 한다.According to an aspect of the present invention, there is provided a mobile communication system, comprising: classifying a type of a base station according to a base station cell radius; Measuring base station attenuation by a predetermined value when the base station has a large radius; Comprising the step of calculating the actual base station power value from the measured value and transmitting it.

도 1은 일반적인 이동 통신 시스템의 구성 블록도.1 is a block diagram of a general mobile communication system.

도 2는 본 발명의 실시예에 따른 이동 통신 시스템의 기지국 시험 장치 내부 구성을 도시한 블록도.2 is a block diagram showing an internal configuration of a base station test apparatus of a mobile communication system according to an embodiment of the present invention.

도 3은 본 발명의 실시예에 따른 이동 통신 시스템의 기지국 송신 전력 측정 과정을 도시한 순서도.3 is a flowchart illustrating a base station transmission power measurement process of a mobile communication system according to an embodiment of the present invention.

***** 도면의주요부분에대한부호설명********** Symbol description for main parts of drawing *****

1-1 ~ 1-n: 기지국 2: 제어국1-1 to 1-n: base station 2: control station

3 : 교환기 4: 기지국 관리부3: switch 4: base station management unit

이하, 첨부한 도면을 참조하여 본 발명에 따른 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명을 수행하기 위한 이동 통신 시스템의 기지국 진단 장치의 내부 구성을 도시한 블록도로서, 이에 도시된 바와 같이, 기지국 전력 송신부(13)와 송신 전력 측정부(11) 사이에 소정의 감쇄값을 가지는 감쇄기(12)를 구비하여 구성된다.FIG. 2 is a block diagram showing an internal configuration of a base station diagnostic apparatus of a mobile communication system for carrying out the present invention. As shown in FIG. 2, a predetermined diagram between a base station power transmitter 13 and a transmit power measurer 11 is shown. It is comprised with the attenuator 12 which has attenuation value.

도 3은 본 발명의 실시예에 따른 이동 통신 시스템의 기지국 송신 전력 측정 과정을 도시한 순서도이다.3 is a flowchart illustrating a base station transmission power measurement process of a mobile communication system according to an embodiment of the present invention.

상기 도 2 및 도 3을 참조하여 본 발명의 실시예에 따른 기지국 전력 측정 과정을 보다 상세히 설명하면 다음과 같다.Referring to Figures 2 and 3 will be described in more detail the base station power measurement process according to an embodiment of the present invention.

먼저, 기지국의 송신 전력이 기지국이 커버하는 셀 반경에 종속적이라는 사실에 착안 하여, 기지국의 타입을 두 개(혹은 그 이상)로 구분한다(S1).First, in view of the fact that the transmission power of the base station is dependent on the cell radius covered by the base station, the type of the base station is divided into two (or more) (S1).

여기서, 상기 기지국 송신 전력이 기지국의 반경에 종속적이라는 의미는 기지국의반경이 작으면 기지국의 송신 전력의 가변폭이 최소와 최대 송신 전력 중 낮은 쪽만을 사용하고, 큰 경우에는 높은 쪽만을 사용한다는 것을 나타낸다.Here, the base station transmit power is dependent on the radius of the base station means that when the radius of the base station is small, the variable width of the base station uses only the lower one of the minimum and maximum transmission power, and in the case of the large one uses only the higher one. Indicates.

예를 들어, 최소 20dBm 에서 최대 50dBm의 송신 전력 대역폭에 상기 복수개의 기지국의 출력 전력값이 모두 포함된다면, 셀 반경이 작은 기지국은 20dBm ~ 40dBm의 송신 전력을 축정할 수 있으면 되고, 셀 반경이 큰 기지국은 30dBm ~ 50dBm의 송신 전력을 측정할 수 있으면 된다는 의미이다.For example, if the output power values of the plurality of base stations are all included in a transmission power bandwidth of at least 20 dBm to a maximum of 50 dBm, a base station having a small cell radius needs to be able to accumulate a transmission power of 20 dBm to 40 dBm, and has a large cell radius. The base station needs to be able to measure the transmit power of 30dBm to 50dBm.

따라서, 원래는 최소 20dBm에서 최대 50dBm의 30dB의 송신 전력 대역폭을 갖도록 전력 감지 하드웨어를 설계해야 했으나, 상기와 같이 두 경우로 나누는 경우에는 20dB의 대역폭을 갖는 하드웨어로도 모든 기지국의 특성을 모두 포함할 수 있게 된다는 의미이다.Therefore, originally, power sensing hardware had to be designed to have a transmission power bandwidth of at least 20 dBm and a maximum of 30 dB of 30 dB. However, in the above two cases, hardware having a bandwidth of 20 dB may include all the characteristics of all base stations. It means you can.

이와 같은 원리를 이용하여 반경이 큰 기지국, 즉 송신 전력이 큰 기지국의 경우에는(S2) 상기 도 2에 도시한 바와 같이, 기지국 전력 전송부(13)와 송신 전력 측정부(11) 사이에 입력 신호를 소정값만큰 감쇄시켜 출력하는 감쇄기(12)를 삽입한다(S3).In the case of a base station having a large radius, that is, a base station having a large transmission power using this principle (S2), as shown in FIG. 2, an input is performed between the base station power transmitter 13 and the transmission power measurement unit 11. An attenuator 12 for attenuating and outputting a signal having only a predetermined value is inserted (S3).

여기서, 상기 감쇄값은 가변이 가능하도록 설계할 수 있다.Here, the attenuation value may be designed to be variable.

이와 같이, 기지국 시험 장치(10)에서는 기지국 전력 송신부(13)로부터 인가되는 기지국의 전력값이 상기 감쇄기(12)를 거쳐 소정값만큼 감쇄되어 출력되고, 상기 송신 전력 측정부(11)는 상기 감쇄된 전력값을 측정하게 된다.As described above, in the base station test apparatus 10, the power value of the base station applied from the base station power transmitter 13 is attenuated and output by the predetermined value through the attenuator 12, and the transmission power measuring unit 11 is attenuated. The measured power value is measured.

그리고, 상기 송신 전력 측정부(11)에서 측정된 송신 전력값과 감쇄기(12)에서 적용된 감쇄값을 더하여 실제 송신 전력값을 계산한다(S4).The actual transmission power value is calculated by adding the transmission power value measured by the transmission power measuring unit 11 and the attenuation value applied by the attenuator 12 (S4).

한편, 상기 스텝 2의 과정에서 송신 전력이 크지 않은 기지국으로 판단된 경우에는 상기와 같은 감쇄기(12)를 거치지 않고, 기지국 전력 송신부(13)로부터 직접 신호를 입력받아 상기 송신 전력 측정부(11)에서 이를 측정한다(S5).On the other hand, if it is determined in step 2 that the base station does not have a large transmit power, the base station power transmitter 13 receives a signal directly from the base station power transmitter 13 without passing through the attenuator 12 as described above. Measure this in (S5).

그리고, 상기 스텝 4 또는 스텝 5의 과정을 통해 출력된 송신 전력값을 전송함으로써(S6), 기지국의 송신 전력 측정 과정이 모두 종료된다.Then, by transmitting the transmission power value output through the process of step 4 or step 5 (S6), all the transmission power measurement process of the base station is completed.

이상에서 살펴본 바와 같이, 본 발명에 따른 이동 통신 시스템의 기지국 송신 전력 측정 방법은 기지국의 타입을 구분하여 송신 전력을 측정하도록 함으로써, 보다 작은 대역폭을 갖는 전력 감지 하드웨어를 사용하여 기지국의 송신 전력을 측정할 수 있으므로 비용이 절감되는 효과가 있다.As described above, in the method for measuring base station transmission power of a mobile communication system according to the present invention, the transmission power is measured by dividing the types of base stations, thereby measuring the transmission power of the base station using a power sensing hardware having a smaller bandwidth. This can reduce the cost.

Claims (3)

이동 통신 시스템에 있어서,In a mobile communication system, 기지국 셀 반경에 따라 기지국의 타입을 구분하는 과정과;Classifying the type of the base station according to the base station cell radius; 반경이 큰 기지국인 경우 실제 기지국 전력을 소정 값만큼 감쇄시켜 측정하는 과정과;Measuring base station attenuation by a predetermined value when the base station has a large radius; 상기 측정된 값으로부터 실제 기지국 전력값을 계산하여 이를 전송하는 과정을 포함하여 이루어지는 것을 특징으로 하는 이동 통신 시스템의 기지국 송신 전력 측정 방법.And calculating the actual base station power value from the measured value and transmitting the calculated base station power value. 제 1항에 있어서, 반경이 크지 않은 기지국인 경우 실제 기지국 전력을 직접 측정하여 전송하는 과정을 더 포함하여 이루어지는 것을 특징으로 하는 이동 통신 시스템의 기지국 송신 전력 측정 방법.The method of claim 1, further comprising directly measuring and transmitting actual base station power when the base station has a small radius. 제 1항에 있어서, 상기 실제 기지국 전력값은 상기 측정된 측정 전력값과 상기 감쇄 값을 더하여 계산되는 것을 특징으로 하는 이동 통신 시스템의 기지국 송신 전력 측정 방법.The method of claim 1, wherein the actual base station power value is calculated by adding the measured measured power value and the attenuation value.
KR1019990061103A 1999-12-23 1999-12-23 Base station transmission power measuring method of mobile communication system KR20010057715A (en)

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