KR100698295B1 - Power Control Digital Broadcasting Signal System and Terminal for Digital Broadcasting Power Control Digital Broadcasting Signal and Method for Power Controll Digital Broadcasting Signal - Google Patents

Power Control Digital Broadcasting Signal System and Terminal for Digital Broadcasting Power Control Digital Broadcasting Signal and Method for Power Controll Digital Broadcasting Signal Download PDF

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Publication number
KR100698295B1
KR100698295B1 KR1020050101229A KR20050101229A KR100698295B1 KR 100698295 B1 KR100698295 B1 KR 100698295B1 KR 1020050101229 A KR1020050101229 A KR 1020050101229A KR 20050101229 A KR20050101229 A KR 20050101229A KR 100698295 B1 KR100698295 B1 KR 100698295B1
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South Korea
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power control
digital broadcasting
control information
digital
error rate
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KR1020050101229A
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Korean (ko)
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전근표
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엘지전자 주식회사
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    • 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
    • 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
    • H04W52/06—TPC algorithms
    • H04W52/16—Deriving transmission power values from another channel
    • 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
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/20—TPC being performed according to specific parameters using error rate
    • 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
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
    • 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
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • 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
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/322—Power control of broadcast channels

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

Abstract

A system for controlling the transmission power of digital broadcasting signals and a digital broadcasting terminal therefor and a method therefor are provided to enable the digital broadcasting terminal to request transmission power control to a broadcast center by using a base station, thereby providing the digital broadcasting service with good quality to a user. A method for controlling the transmission power of digital broadcasting signals in a digital broadcasting terminal comprises the following steps of: receiving digital broadcasting signals from a broadcast center in the digital broadcasting terminal(S301); analyzing a BER(Bit Error Rate) for the MSC(Main Service Channel) reception of the digital broadcasting signal(S302); inserting power control information according to the BER to a power control bit for mobile communication if the analyzed BER is less than a preset threshold value(S304,S307); transmitting the power control bit inserting the power control information to the broadcast center through a base station(S308); and receiving the digital broadcasting signal of which a transmission power level is controlled according to the power control information from the broadcast center.

Description

디지털 방송신호 전력제어 시스템 및 이를 위한 디지털방송용 단말기 및 이를 위한 방법{Power Control Digital Broadcasting Signal System and Terminal for Digital Broadcasting Power Control Digital Broadcasting Signal and Method for Power Controll Digital Broadcasting Signal}Digital broadcasting signal power control system and digital broadcasting terminal and method therefor {Power Control Digital Broadcasting Signal System and Terminal for Digital Broadcasting Power Control Digital Broadcasting Signal and Method for Power Controll Digital Broadcasting Signal}

도 1은 본 발명에 따른 디지털방송용 단말기를 나타낸 일 실시예 구성도이다.1 is a configuration diagram of an embodiment of a digital broadcasting terminal according to the present invention.

도 2는 본 발명에 따라 디지털 방송신호의 전력제어정보가 삽입된 이동통신용 전력제어비트를 나타낸 일 실시예 포맷이다.FIG. 2 is a diagram illustrating an embodiment of a power control bit for mobile communication in which power control information of a digital broadcast signal is inserted according to the present invention.

도 3은 본 발명에 따른 디지털방송용 단말기의 디지털 방송신호 전력제어 방법을 나타낸 일 실시예 흐름도이다.3 is a flowchart illustrating a digital broadcast signal power control method of a digital broadcasting terminal according to the present invention.

도 4는 본 발명에 따른 디지털 방송신호 전력제어 시스템을 나타낸 일 실시예 구성도이다.4 is a configuration diagram showing an embodiment of a digital broadcast signal power control system according to the present invention.

<도면의 주요 부호에 대한 설명><Description of Major Symbols in Drawing>

110 : 디지털방송 수신부 120 : 무선부110: digital broadcasting receiver 120: wireless unit

130 : 메모리 140 : 표시부130: memory 140: display unit

150 : 제어부150: control unit

본 발명은 디지털방송용 단말기에 관한 것으로, 특히 디지털 방송신호의 송신전력을 제어하는 디지털 방송신호 전력제어 시스템 및 이를 위한 디지털방송용 단말기 및 이를 위한 방법에 관한 것이다.The present invention relates to a digital broadcasting terminal, and more particularly, to a digital broadcasting signal power control system for controlling a transmission power of a digital broadcasting signal, a digital broadcasting terminal and a method therefor.

최근 디지털방송 기술을 바탕으로 새로이 출현한 디지털방송(Digital Multimedia Broadcasting) 서비스는 이동 중 언제 어디서나 CD급 고품질의 라디오, TV 동영상 및 문자방송 수신이 가능하다.Digital Multimedia Broadcasting Service, which has recently emerged based on digital broadcasting technology, can receive CD-quality high-quality radio, TV video and text broadcasting anytime, anywhere.

상기 디지털방송을 이용하여 제공 가능한 응용 서비스로는 디지털방송시스템을 통해 실시간으로 교통정보를 제공하는 TPEG 서비스, 위성을 이용해 3지점을 측정하여 차량이나 사람의 위치를 파악하는 GPS 서비스, 휴대용이나 차량용 DMB 수신 단말기에 전달되는 CD 수준의 오디오 신호를 MP3 플레이어와 연계시켜 언제든지 음악을 들을 수 있게 하는 MP3 서비스, JPEG 등의 정지된 이미지를 보내는 일종의 슬라이드쇼 서비스, R-commerce 서비스, BWS(Broadcasting Website) 서비스, 웹(web)과 연동된 서비스인 DLS 서비스 혹은 BWS 서비스 등 다양한 서비스가 가능하다.Application services that can be provided by using digital broadcasting include a TPEG service that provides traffic information in real time through a digital broadcasting system, a GPS service that determines the location of a vehicle or a person by measuring three points using satellites, and a portable or vehicle DMB. MP3 service that connects CD level audio signal delivered to receiving terminal with MP3 player to listen to music at any time, a kind of slideshow service that sends still images such as JPEG, R-commerce service, BWS (Broadcasting Website) service , Various services such as DLS service or BWS service which is interworking with web are possible.

그러나 상기 디지털방송은 건물이나 날씨 지형등의 영향을 많이 받는다.However, the digital broadcasting is affected by buildings and weather topography.

디지털방송을 제공하는 방송센터는 높은 전력으로 디지털 방송신호를 송출해도 상기 디지털 방송신호를 수신하는 디지털방송용 단말기의 위치가 음영지역에 위치하면 상기 디지털 방송신호의 수신감도가 매우 나빠진다.Even if a broadcasting center providing digital broadcasting transmits a digital broadcasting signal with high power, the reception sensitivity of the digital broadcasting signal is very poor when the position of the digital broadcasting terminal receiving the digital broadcasting signal is located in a shaded area.

방송센터는 상기 디지털 방송신호의 수신감도를 개선하기 위해서는 상기 음 영지역에 위치한 디지털방송용 단말기로 송신하는 디지털 방송신호의 송신전력을 제어해야 한다.In order to improve the reception sensitivity of the digital broadcasting signal, the broadcasting center must control the transmission power of the digital broadcasting signal transmitted to the digital broadcasting terminal located in the shaded area.

그러나, 현재 디지털방송용 단말기는 상기 방송센터로부터 디지털 방송신호를 수신만 할 뿐, 상기 방송센터로 상기 디지털 방송신호에 대한 전력제어정보를 송신할 수 있는 기능이 없어 상기 디지털 방송신호에 대한 송신전력 제어를 할 수 없는 문제점이 있다.However, at present, the digital broadcasting terminal only receives the digital broadcasting signal from the broadcasting center, and there is no function to transmit the power control information for the digital broadcasting signal to the broadcasting center, thereby controlling the transmission power of the digital broadcasting signal. There is a problem that can not be done.

본 발명의 목적은, 디지털방송용 단말기가 기지국을 이용하여 방송센터로 디지털 방송신호의 송신전력 제어를 요청할 수 있는 디지털 방송신호 전력제어 시스템 및 이를 위한 디지털방송용 단말기 및 이를 위한 방법을 제공하는데 그 목적이 있다.Disclosure of the Invention An object of the present invention is to provide a digital broadcasting signal power control system, a digital broadcasting terminal for the same, and a method therefor, in which a digital broadcasting terminal can request transmission power control of a digital broadcasting signal to a broadcasting center using a base station. have.

상기 목적을 달성하기 위한 본 발명에 따른 디지털 방송신호 전력제어 시스템은, 디지털 방송신호를 송신하고, 상기 송신한 디지털 방송신호에 대한 전력제어정보가 삽입된 이동통신용 전력제어비트를 수신하면, 상기 전력제어정보에 대응하여 상기 디지털 방송신호의 송신 전력 레벨을 제어하는 방송센터(410)와; 상기 방송센터(410)로부터 수신한 디지털 방송신호의 메인서비스 채널(Main Service Channel; 'MSC') 수신 비트에러율을 분석하고, 상기 분석된 비트에러율이 기 설정된 임계치 이하이면, 상기 비트에러율에 따른 전력제어정보를 이동통신용 전력제어비트에 삽입하여 송신하는 디지털방송용 단말기(420)와; 상기 디지털방송용 단말기(420)로부터 수신된 전력제어비트를 상기 방송센터(410)로 송신하는 기지국(430)을 포함하여 이루어진다.The digital broadcast signal power control system according to the present invention for achieving the above object, if the digital broadcast signal is transmitted, and receives the power control bit for mobile communication in which power control information for the transmitted digital broadcast signal is inserted, the power A broadcast center (410) for controlling a transmission power level of the digital broadcast signal in response to control information; Analyzing a main service channel (MSC) received bit error rate of the digital broadcast signal received from the broadcast center 410, and if the analyzed bit error rate is less than or equal to a preset threshold, power according to the bit error rate A digital broadcasting terminal 420 inserting control information into a power control bit for mobile communication and transmitting the control information; And a base station 430 for transmitting the power control bits received from the digital broadcasting terminal 420 to the broadcasting center 410.

또한, 본 발명에 따른 디지털방송용 단말기는, 방송센터(410)로부터 디지털 방송신호를 수신하는 디지털방송 수신부와; 상기 디지털 방송신호의 메인서비스 채널(Main Service Channel; 'MSC') 수신 비트에러율을 분석하고, 상기 분석된 비트에러율이 기 설정된 임계치 이하이면 상기 비트에러율에 따른 전력제어정보를 이동통신용 전력제어비트에 삽입하는 제어부와; 상기 전력제어비트를 기지국(430)을 통해 상기 방송센터(410)로 송신하는 무선부를 포함하여 이루어진다.In addition, the digital broadcasting terminal according to the present invention includes a digital broadcasting receiver for receiving a digital broadcasting signal from a broadcasting center 410; Analyzing a main service channel (MSC) received bit error rate of the digital broadcast signal, and if the analyzed bit error rate is less than or equal to a preset threshold, power control information according to the bit error rate is transmitted to a power control bit for mobile communication. A control unit to insert; It comprises a wireless unit for transmitting the power control bit to the broadcast center 410 through the base station 430.

또한, 본 발명에 따른 디지털방송용 단말기의 디지털 방송신호 전력제어 방법은, 디지털방송용 단말기(420)가 방송센터(410)로부터 디지털 방송신호를 수신하는 단계와; 상기 디지털 방송신호의 메인서비스 채널(Main Service Channel; 'MSC') 수신 비트에러율을 분석하는 단계와; 상기 분석된 비트에러율이 기 설정된 임계치 이하이면, 상기 비트에러율에 따른 전력제어정보를 이동통신용 전력제어비트에 삽입하는 단계와; 상기 전력제어정보가 삽입된 전력제어비트를 기지국(430)을 통해 상기 방송센터(410)로 송신하는 단계와; 상기 방송센터(410)로부터 상기 전력제어정보에 따라 송신 전력 레벨이 조정된 디지털 방송신호를 수신하는 단계를 포함하여 이루어진다.In addition, the digital broadcasting signal power control method of the digital broadcasting terminal according to the present invention, the digital broadcasting terminal 420 receiving a digital broadcasting signal from the broadcasting center 410; Analyzing a main service channel (MSC) received bit error rate of the digital broadcast signal; If the analyzed bit error rate is less than or equal to a preset threshold, inserting power control information according to the bit error rate into a power control bit for mobile communication; Transmitting a power control bit in which the power control information is inserted to the broadcasting center (410) through a base station (430); And receiving a digital broadcast signal whose transmission power level is adjusted according to the power control information from the broadcasting center 410.

상술한 목적, 특징들 및 장점은 첨부된 도면과 관련한 다음의 상세한 설명을 통하여 보다 분명해질 것이다. 이하 첨부된 도면을 참조하여 본 발명에 따른 바람직한 일 실시예를 상세히 설명한다.The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 디지털방송용 단말기를 나타낸 일 실시예 구성도이다.1 is a configuration diagram of an embodiment of a digital broadcasting terminal according to the present invention.

도 1을 참조하면, 디지털방송 수신부(110)는, 방송센터로부터 디지털 방송신호를 수신하고, 상기 수신한 디지털 방송신호로부터 영상, 음향 및 데이터를 추출하고, 상기 추출된 영상, 음향 및 데이터를 복호화하여 제어부(130)와 표시부(140) 로 출력한다.Referring to FIG. 1, the digital broadcasting receiver 110 receives a digital broadcasting signal from a broadcasting center, extracts an image, sound, and data from the received digital broadcasting signal, and decodes the extracted image, sound, and data. To the control unit 130 and the display unit 140.

무선부(120)는, 안테나를 통해 수신되는 무선신호를 기저대역으로 복호하여 제어부(130)로 출력하고, 제어부(130)부로부터 출력된 신호를 무선신호로 변조하여 외부로 송신한다.The radio unit 120 decodes the radio signal received through the antenna to the baseband and outputs the signal to the control unit 130, modulates the signal output from the control unit 130 into a radio signal and transmits the signal to the outside.

또한, 무선부(120)는, 제어부(130)에 의해 생성된 전력제어비트를 무선신호로 변조하여 기지국으로 송신한다.In addition, the radio unit 120 modulates the power control bit generated by the control unit 130 into a radio signal and transmits it to the base station.

메모리(130)는, 상기 디지털방송용 단말기의 동작을 제어하는 소정 프로그램과, 제어부(150)에 의해 상기 디지털방소용 단말기의 전반적인 동작이 수행될 때 입출력되는 데이터 및 처리되는 각종 데이터를 저장한다.The memory 130 stores a predetermined program for controlling an operation of the digital broadcasting terminal, and data input and output and various data processed when the overall operation of the digital defense terminal is performed by the controller 150.

표시부(140)는, 상기 디지털방송 수신부(110)에 의해 입력된 영상을 화면에 표시하고, 제어부(150)에 의해 입력된 사용자 데이터를 출력한다.The display unit 140 displays the image input by the digital broadcast receiving unit 110 on the screen, and outputs the user data input by the control unit 150.

제어부(150)는, 상기 디지털방송용 단말기의 전반적인 동작을 제어하고, 디지털방송 수신부(110)로부터 입력된 디지털 방송신호의 수신감도를 분석하고, 상기 분석된 수신감도가 메모리(130)에 미리 설정된 임계치보다 크거나 작은지 대소 여부를 판단한다.The controller 150 controls the overall operation of the digital broadcasting terminal, analyzes the reception sensitivity of the digital broadcast signal input from the digital broadcasting reception unit 110, and the analyzed reception sensitivity is a threshold value preset in the memory 130. Determine whether it is larger or smaller.

바람직하게, 상기 수신감도 분석은 상기 디지털 방송신호의 수신전력에 대한 신호대 잡음비(Eb/No)와 상기 디지털 방송신호의 메인서비스 채널(Main Service Channel; 'MSC') 수신에 대한 비트에러율(Bit error Rate; 'BER') 중 적어도 하나를 분석하는 것을 의미한다.Preferably, the reception sensitivity analysis is a bit error rate (Bb error) for the signal-to-noise ratio (Eb / No) of the received power of the digital broadcast signal and the reception of the main service channel (MSC) of the digital broadcast signal. Rate; 'BER').

제어부(150)는, 상기 수신감도가 임계치보다 크면, 상기 방송센터의 송신전 력을 현 상태로 유지 또는 감소를 요청하기 위한 전력제어정보를 생성하고, 상기 전력제어정보를 이하 도 2의 이동통신용 전력제어비트 내에 여분의 공간에 삽입하고, 상기 전력제어정보가 삽입된 이동통신용 전력제어비트를 무선부(120)를 통해 기지국으로 송신한다.If the reception sensitivity is greater than a threshold, the controller 150 generates power control information for requesting to maintain or reduce the transmission power of the broadcasting center in a current state, and the power control information for the mobile communication of FIG. The power control bit is inserted into an extra space in the power control bit, and the mobile communication power control bit into which the power control information is inserted is transmitted to the base station through the wireless unit 120.

제어부(150)는, 상기 수신감도가 임계치보다 작으면, 상기 방송센터의 송신전력 증가를 요청하기 위한 전력제어정보를 생성하고, 상기 전력제어정보를 이하 도 2의 이동통신용 전력제어비트 내에 여분의 공간에 삽입하고, 상기 전력제어정보가 삽입된 이동통신용 전력제어비트를 무선부(120)를 통해 기지국으로 송신한다.If the reception sensitivity is less than a threshold, the controller 150 generates power control information for requesting an increase in the transmission power of the broadcasting center, and the power control information is redundant in the power control bit for mobile communication of FIG. 2. Inserted into the space, and transmits the power control bit for the mobile communication in which the power control information is inserted through the wireless unit 120 to the base station.

도 2는 본 발명에 따라 디지털 방송신호의 전력제어정보가 삽입된 이동통신용 전력제어비트를 나타낸 일 실시예 포맷이다.FIG. 2 is a diagram illustrating an embodiment of a power control bit for mobile communication in which power control information of a digital broadcast signal is inserted according to the present invention.

바람직하게, 상기 기지국은, 무선부(120)로부터 수신한 이동통신용 전력제어비트를 방송센터로 재 송신한다.Preferably, the base station retransmits the power control bits for mobile communication received from the radio unit 120 to the broadcasting center.

보다 바람직하게, 상기 방송센터는, 기지국으로부터 수신한 전력제어비트 내에 삽입된 디지털 방송신호의 전력제어정보를 분석하고, 상기 분석된 전력제어정보에 대응하여 상기 디지털방송용 단말기로 송신하는 디지털 방송신호의 송신전력을 제어한다.More preferably, the broadcasting center analyzes power control information of a digital broadcast signal inserted in a power control bit received from a base station, and transmits the digital broadcast signal to the digital broadcasting terminal in response to the analyzed power control information. Control the transmit power.

도 3은 본 발명에 따른 디지털방송용 단말기의 디지털 방송신호 전력제어 방법을 나타낸 일 실시예 흐름도이다.3 is a flowchart illustrating a digital broadcast signal power control method of a digital broadcasting terminal according to the present invention.

도 3을 참조하면, 상기 디지털방송용 단말기의 제어부(150)는, 디지털방송 수신부(110)를 통해 방송센터로부터 디지털 방송신호를 수신한다(S301).Referring to FIG. 3, the controller 150 of the digital broadcasting terminal receives a digital broadcast signal from a broadcasting center through the digital broadcast receiver 110 (S301).

제어부(150)는, 상기 수신한 디지털 방송신호의 수신감도를 분석한다(S302).The controller 150 analyzes the reception sensitivity of the received digital broadcast signal (S302).

바람직하게, 상기 수신감도 분석은 상기 디지털 방송신호의 수신전력에 대한 신호대 잡음비(Eb/No)와 상기 디지털 방송신호의 메인서비스 채널(Main Service Channel; 'MSC') 수신에 대한 비트에러율(Bit error Rate; 'BER') 중 적어도 하나를 분석하는 것을 의미한다.Preferably, the reception sensitivity analysis is a bit error rate (Bb error) for the signal-to-noise ratio (Eb / No) of the received power of the digital broadcast signal and the reception of the main service channel (MSC) of the digital broadcast signal. Rate; 'BER').

제어부(150)는, 상기 분석한 디지털 방송신호의 수신감도가 메모리(130)에 미리 설정된 임계치보다 크거나 작은지 대소 여부를 판단한다(S303).The controller 150 determines whether the received sensitivity of the analyzed digital broadcast signal is larger or smaller than the threshold set in the memory 130 (S303).

제어부(150)는, 상기 수신감도가 임계치보다 크면(S304), 상기 방송센터에 디지털 방송신호 송신전력의 세기를 현 상태로 유지 또는 감소 요청하기 위한 전력제어정보를 생성한다(S305).If the reception sensitivity is greater than the threshold (S304), the controller 150 generates power control information for requesting to maintain or reduce the strength of the digital broadcast signal transmission power in the current state (S305).

또한, 제어부(150)는, 상기 수신감도가 임계치보다 작으면, 상기 방송센터의 송신전력 증가를 요청하기 위한 전력제어정보를 생성한다(S306).In addition, if the reception sensitivity is less than a threshold, the controller 150 generates power control information for requesting an increase in transmission power of the broadcasting center (S306).

제어부(150)는, 상기 생성된 전력제어정보를 상기 도 2의 이동통신용 전력제어비트 내에 여분의 공간에 삽입하고(S307), 상기 전력제어정보가 삽입된 이동통신용 전력제어비트를 무선부(120)를 통해 기지국으로 송신한다(S308).The controller 150 inserts the generated power control information into an extra space in the mobile communication power control bit of FIG. 2 (S307), and inserts the mobile communication power control bit into which the power control information is inserted. And transmits to the base station through step S308.

바람직하게, 상기 기지국은, 무선부(120)로부터 수신한 전력제어비트를 방송센터로 재 송신한다.Preferably, the base station retransmits the power control bits received from the radio unit 120 to the broadcasting center.

보다 바람직하게, 상기 방송센터는, 기지국으로부터 수신한 전력제어비트 내에 삽입된 디지털 방송신호의 전력제어정보를 분석하고, 상기 분석된 전력제어정보에 대응하여 상기 디지털방송용 단말기로 송신하는 디지털 방송신호의 송신전력을 제어한다.More preferably, the broadcasting center analyzes power control information of a digital broadcast signal inserted in a power control bit received from a base station, and transmits the digital broadcast signal to the digital broadcasting terminal in response to the analyzed power control information. Control the transmit power.

도 4는 본 발명에 따른 디지털 방송신호 전력제어 시스템을 나타낸 일 실시예 구성도이다.4 is a configuration diagram showing an embodiment of a digital broadcast signal power control system according to the present invention.

도 4를 참조하면, 방송센터(410)는, 디지털방송용 단말기(420)로 디지털 방송신호를 송신한다.Referring to FIG. 4, the broadcasting center 410 transmits a digital broadcasting signal to the digital broadcasting terminal 420.

디지털방송용 단말기(420)는, 방송센터(410)로부터 디지털 방송신호를 수신하고, 상기 디지털 방송신호의 수신감도를 분석한다.The digital broadcasting terminal 420 receives the digital broadcasting signal from the broadcasting center 410 and analyzes the reception sensitivity of the digital broadcasting signal.

바람직하게, 상기 수신감도 분석은 상기 디지털 방송신호의 수신전력에 대한 신호대 잡음비(Eb/No)와 상기 디지털 방송신호의 메인서비스 채널(Main Service Channel; 'MSC') 수신에 대한 비트에러율(Bit error Rate; 'BER') 중 적어도 하나를 분석하는 것을 의미한다.Preferably, the reception sensitivity analysis is a bit error rate (Bb error) for the signal-to-noise ratio (Eb / No) of the received power of the digital broadcast signal and the reception of the main service channel (MSC) of the digital broadcast signal. Rate; 'BER').

디지털방송용 단말기(420)는, 상기 분석한 디지털 방송신호의 수신감도가 미리 설정된 임계치보다 크거나 작은지 대소 여부를 판단한다.The digital broadcasting terminal 420 determines whether the received sensitivity of the analyzed digital broadcasting signal is larger or smaller than a preset threshold.

디지털방송용 단말기(420)는, 상기 수신감도가 임계치보다 크면, 방송센터(410)에 디지털 방송신호 송신전력의 세기를 현 상태로 유지 또는 감소 요청하기 위한 전력제어정보를 생성한다.When the reception sensitivity is greater than the threshold, the digital broadcasting terminal 420 generates power control information for requesting the broadcasting center 410 to maintain or reduce the strength of the digital broadcasting signal transmission power.

또한, 디지털방송용 단말기(420)는, 상기 수신감도가 임계치보다 작으면, 방송센터(410)의 송신전력 증가를 요청하기 위한 전력제어정보를 생성한다.In addition, if the reception sensitivity is less than the threshold, the digital broadcasting terminal 420 generates power control information for requesting an increase in transmission power of the broadcasting center 410.

디지털방송용 단말기(420)는, 상기 생성된 전력제어정보를 상기 도 2의 이동통신용 전력제어비트 내에 여분의 공간에 삽입하고, 상기 전력제어정보가 삽입된 이동통신용 전력제어비트를 기지국(430)으로 송신한다.The digital broadcasting terminal 420 inserts the generated power control information into an extra space in the mobile communication power control bit of FIG. 2, and inserts the mobile communication power control bit into which the power control information is inserted into the base station 430. Send.

기지국(430)은, 디지털방송용 단말기(420)로부터 수신한 이동통신용 전력제어비트를 방송센터(410)로 재 송신한다.The base station 430 retransmits the power control bits for mobile communication received from the digital broadcasting terminal 420 to the broadcasting center 410.

방송센터(410)는, 기지국(430)으로부터 수신한 전력제어비트 내에 삽입된 디지털 방송신호의 전력제어정보를 분석하고, 상기 분석된 전력제어정보에 대응하여 디지털방송용 단말기(420)로 송신하는 디지털 방송신호의 송신전력을 제어한다.The broadcasting center 410 analyzes the power control information of the digital broadcast signal inserted in the power control bit received from the base station 430, and transmits the digital data to the digital broadcasting terminal 420 in response to the analyzed power control information. Control the transmission power of the broadcast signal.

이상에서 설명한 본 발명은, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 있어 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능하므로 전술한 실시예 및 첨부된 도면에 의해 한정되는 것이 아니다.The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

본 발명에 따른 디지털 방송신호 전력제어 시스템 및 이를 위한 디지털방송용 단말기 및 이를 위한 방법은, 디지털방송용 단말기가 기지국을 이용하여 방송센터로 송신전력제어를 요청할 수 있어, 좋은 품질의 디지털 방송서비스를 제공하는 효과가 있다.Digital broadcasting signal power control system and a digital broadcasting terminal and method therefor according to the present invention, the digital broadcasting terminal can request the transmission power control to the broadcasting center using the base station, providing a high quality digital broadcasting service It works.

Claims (13)

디지털방송용 단말기(420)가 방송센터(410)로부터 디지털 방송신호를 수신하는 단계;Receiving, by the digital broadcasting terminal 420, the digital broadcasting signal from the broadcasting center 410; 상기 디지털 방송신호의 메인서비스 채널(Main Service Channel; 'MSC') 수신 비트에러율을 분석하는 단계;Analyzing a main service channel (MSC) received bit error rate of the digital broadcast signal; 상기 분석된 비트에러율이 기 설정된 임계치 이하이면, 상기 비트에러율에 따른 전력제어정보를 이동통신용 전력제어비트에 삽입하는 단계;If the analyzed bit error rate is less than or equal to a preset threshold, inserting power control information according to the bit error rate into a power control bit for mobile communication; 상기 전력제어정보가 삽입된 전력제어비트를 기지국(430)을 통해 상기 방송센터(410)로 송신하는 단계; 및Transmitting a power control bit in which the power control information is inserted to the broadcasting center 410 through a base station 430; And 상기 방송센터(410)로부터 상기 전력제어정보에 따라 송신 전력 레벨이 조정된 디지털 방송신호를 수신하는 단계를 포함하여 이루어지는 디지털방송용 단말기의 디지털 방송신호 전력제어 방법.And receiving a digital broadcast signal whose transmission power level is adjusted according to the power control information from the broadcast center (410). 삭제delete 삭제delete 삭제delete 삭제delete 방송센터(410)로부터 디지털 방송신호를 수신하는 디지털방송 수신부;A digital broadcast receiver for receiving a digital broadcast signal from the broadcast center 410; 상기 디지털 방송신호의 메인서비스 채널(Main Service Channel; 'MSC') 수신 비트에러율을 분석하고, 상기 분석된 비트에러율이 기 설정된 임계치 이하이면 상기 비트에러율에 따른 전력제어정보를 이동통신용 전력제어비트에 삽입하는 제어부; 및Analyzing a main service channel (MSC) received bit error rate of the digital broadcast signal, and if the analyzed bit error rate is less than or equal to a preset threshold, power control information according to the bit error rate is transmitted to a power control bit for mobile communication. A control unit to insert; And 상기 전력제어비트를 기지국(430)을 통해 상기 방송센터(410)로 송신하는 무선부를 포함하여 이루어지는 디지털방송용 단말기.And a wireless unit for transmitting the power control bits to the broadcasting center (410) through a base station (430). 삭제delete 삭제delete 삭제delete 삭제delete 디지털 방송신호를 송신하고, 상기 송신한 디지털 방송신호에 대한 전력제어정보가 삽입된 이동통신용 전력제어비트를 수신하면, 상기 전력제어정보에 대응하여 상기 디지털 방송신호의 송신 전력 레벨을 제어하는 방송센터(410);A broadcasting center which transmits a digital broadcast signal and controls a transmission power level of the digital broadcast signal in response to the power control information when receiving a mobile communication power control bit into which the power control information of the transmitted digital broadcast signal is inserted; 410; 상기 방송센터(410)로부터 수신한 디지털 방송신호의 메인서비스 채널(Main Service Channel; 'MSC') 수신 비트에러율을 분석하고, 상기 분석된 비트에러율이 기 설정된 임계치 이하이면, 상기 비트에러율에 따른 전력제어정보를 이동통신용 전력제어비트에 삽입하여 송신하는 디지털방송용 단말기(420); 및Analyzing a main service channel (MSC) received bit error rate of the digital broadcast signal received from the broadcast center 410, and if the analyzed bit error rate is less than or equal to a preset threshold, power according to the bit error rate A digital broadcasting terminal 420 inserting control information into a power control bit for mobile communication and transmitting the control information; And 상기 디지털방송용 단말기(420)로부터 수신된 전력제어비트를 상기 방송센터(410)로 송신하는 기지국(430)을 포함하여 이루어지는 디지털 방송신호 전력제어 시스템.And a base station (430) for transmitting the power control bits received from the digital broadcasting terminal (420) to the broadcasting center (410). 삭제delete 삭제delete
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