KR20040083863A - Apparatus for selecting of CDMA reverse link signal - Google Patents

Apparatus for selecting of CDMA reverse link signal Download PDF

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KR20040083863A
KR20040083863A KR1020030018548A KR20030018548A KR20040083863A KR 20040083863 A KR20040083863 A KR 20040083863A KR 1020030018548 A KR1020030018548 A KR 1020030018548A KR 20030018548 A KR20030018548 A KR 20030018548A KR 20040083863 A KR20040083863 A KR 20040083863A
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South Korea
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signal
cdma
selecting
reverse
level
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KR1020030018548A
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Korean (ko)
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이우재
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유티스타콤코리아 유한회사
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Priority to KR1020030018548A priority Critical patent/KR20040083863A/en
Priority to PCT/KR2004/000651 priority patent/WO2004086642A1/en
Priority to EP04723091A priority patent/EP1614228A1/en
Publication of KR20040083863A publication Critical patent/KR20040083863A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • H04B7/2634—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for channel frequency control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation

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

Abstract

PURPOSE: A device for selecting a CDMA reverse link signal is provided to activate a level conversion element only of a desired FA(Frequency Assignment), and to disable the rest FA, thereby receiving a signal of the corresponding FA only while supplying the signal to a modem chip. CONSTITUTION: A modem(100) demodulates a CDMA reverse signal. A data line(300) is a passage where the CDMA reverse signal passes through. A signal line(400) is a signal passage for controlling a signal level converter(500) to select an FA. The signal level converter(500) consists of circuit elements for changing a level of the received CDMA reverse signal. A PLD(Programmable Logic Device)(200) controls an operation of the signal level converter(500) through the signal line(400), and generates a signal for selecting a receiving signal.

Description

시디엠에이 역방향 링크 신호 선택 장치{Apparatus for selecting of CDMA reverse link signal}Apparatus for selecting of CDMA reverse link signal

본 발명은 레벨변환 소자를 인에이블/디스에이블(enable/disable) 조절함으로서, 원하는 FA(Frequency Assignment)를 모뎀칩으로 인가할 수 있도록 한 CDMA 역방향 링크 신호 선택 장치에 관한 것으로서, 보다 상세하게는 IF 보드로 전송되어 오는 CDMA(Code Division Multiple Access) 역방향 신호를 신호레벨 변환기를 조절 즉, 원하는 FA의 레벨변환 소자만을 액티브(Active)시키고, 나머지는 디스에이블 시킴으로서, 해당 FA만의 신호를 수신할 수 있으며, 이 신호를 모뎀칩에 공급할 수 있도록 함으로써, 상기 모뎀칩에서 원하는 FA의 수신신호를 수신하여 복조할 수 있으며, 또한 시스템 측면에서 시스템 운용의 활용도를 높이고, 시스템 포설시 가용한 FA의 선택을 간단히 이룰 수 있도록 한 CDMA 역방향 링크 신호 선택 장치에 관한 것이다.The present invention relates to a CDMA reverse link signal selection device that enables a desired frequency assignment (FA) to be applied to a modem chip by enabling / disabling a level conversion device. Code Division Multiple Access (CDMA) reverse signal transmitted to the board is controlled by adjusting the signal level converter, that is, only the level conversion elements of the desired FA are activated, and the rest are disabled, so that only the corresponding FA signals can be received. By supplying this signal to the modem chip, it is possible to receive and demodulate the received signal of the desired FA in the modem chip, improve the utilization of system operation from the system side, and simplify the selection of the available FA when installing the system. A CDMA reverse link signal selection apparatus is provided.

일반적으로, 이동통신 시스템에서 여러 FA(Frequency Assignment)를 수용하는 기지국에서 모뎀칩에서 FA를 선택하는 기능은 필수적이다.In general, a function of selecting an FA in a modem chip is essential in a base station that accommodates multiple frequency assignments in a mobile communication system.

그러나, 종래 기술에서는 이러한 기능은 구현되어 있지 않다.However, such a function is not implemented in the prior art.

이에 본 발명에서는, IF 보드로 전송되어 오는 역방향 신호는 각 FA별로 독립되어져 있는데, 이를 원하는 FA만 모뎀칩에 인가하기 위해 레벨변환 소자를 인에이블/디스에이블(enable/disable) 조절함으로서, 원하는 FA의 레벨변환 소자만을 액티브 시킴으로서, 해당 FA만 수신하게 되어 모뎀칩에 공급할 수 있도록 한다.Accordingly, in the present invention, the reverse signal transmitted to the IF board is independent for each FA. The FA is controlled by enabling / disabling the level converting element to apply only the desired FA to the modem chip. By activating only the level converting devices, only the FA is received so that it can be supplied to the modem chip.

이에 본 발명은 상기와 같은 종래 기술의 제반 문제점을 해결하기 위해서 제안된 것으로서,Accordingly, the present invention is proposed to solve the above problems of the prior art,

본 발명의 목적은 IF 보드로 전송되어 오는 CDMA(Code Division Multiple Access) 역방향 신호를 신호레벨 변환기를 조절 즉, 원하는 FA의 레벨변환 소자만을 액티브(Active)시키고, 나머지는 디스에이블 시킴으로서, 해당 FA만의 신호를 수신할 수 있으며, 이 신호를 모뎀칩에 공급할 수 있도록 함으로써, 상기 모뎀칩에서 원하는 FA의 수신신호를 수신하여 복조할 수 있으며, 또한 시스템 측면에서 시스템 운용의 활용도를 높이고, 시스템 포설시 가용한 FA의 선택을 간단히 이룰 수 있도록 한 CDMA 역방향 링크 신호 선택 장치를 제공하는 데 있다.An object of the present invention is to control a signal level converter for a CDMA reverse code signal transmitted to an IF board, that is, to activate only a level converting element of a desired FA, and to disable the rest of the FA. By receiving the signal, and by supplying the signal to the modem chip, it is possible to receive and demodulate the received FA signal of the desired FA in the modem chip, and to increase the utilization of the system operation from the system side, and to be available when installing the system. An object of the present invention is to provide a CDMA reverse link signal selection device to simplify the selection of a FA.

상기와 같은 목적을 달성하기 위한 본 발명은,The present invention for achieving the above object,

CDMA(Code Division Multiple Access) 역방향 신호(Reverse Signal)를 복조하는 기능을 수행하는 모뎀부와,A modem unit for performing a function of demodulating a CDMA (Code Division Multiple Access) reverse signal;

역방향 CDMA 신호가 수신되는 통로인 데이터선과,A data line that is a path through which a reverse CDMA signal is received;

주파수 할당(Frequency Assignment) 선택을 위한 레벨 변환기 컨트롤용 신호 통로인 신호선과,A signal line that is a signal path for level converter control for frequency assignment selection, and

역방향 수신 CDMA 신호의 레벨을 바꾸어 주는 회로 소자로 구성된 신호레벨 변환기와,A signal level converter composed of circuit elements for changing the level of the reverse receiving CDMA signal,

상기 신호선을 통하여 상기 신호레벨 변환기의 동작을 제어하고, 수신신호 선택을 위한 신호를 생성하는 PLD(Programmable Logic Device)부로 구성됨을 그 장치적 구성상의 특징으로 한다.It is characterized in that it comprises a PLD (Programmable Logic Device) unit for controlling the operation of the signal level converter through the signal line, and generates a signal for selecting a received signal.

또한, 상기와 같은 목적을 달성하기 위한 본 발명은,In addition, the present invention for achieving the above object,

상기 PLD부가 만들어 내는 컨트롤 신호에 의해 다수의 레벨변환 소자중 한 개만을 액티브(Active)시키고, 나머지는 디스에이블(Disable) 시킨 후, 상기 데이터선을 통해 모뎀부로 해당하는 FA의 신호를 인가하는 것을 특징으로 한다.Only one of the plurality of level converting elements is activated by the control signal generated by the PLD unit, and the rest is disabled, and then a corresponding FA signal is applied to the modem unit through the data line. It features.

도 1은 본 발명에 의한 CDMA 역방향 링크 신호 선택 장치의 구성을 나타낸 도면이다.1 is a diagram showing the configuration of a CDMA reverse link signal selection apparatus according to the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

100 ..... 모뎀부100 ..... modem

200 ..... PLD부200 ..... PLD

300 ..... 데이터선300 ..... data line

400 ..... 신호선400 ..... signal line

500 ..... 신호레벨 변환기500 ..... Signal level converter

이하, 상기와 같은 기술적 사상에 따른 본 발명의 「시디엠에이 역방향 링크 신호 선택 장치」의 바람직한 실시 예를 첨부된 도면에 의거 상세히 설명하면 다음과 같다.Hereinafter, a preferred embodiment of the "CD-AM reverse link signal selection apparatus" of the present invention according to the technical spirit as described above will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 의한 CDMA 역방향 링크 신호 선택 장치의 구성을 나타낸 도면이다.1 is a diagram showing the configuration of a CDMA reverse link signal selection apparatus according to the present invention.

이에 도시된 바와 같이, CDMA 역방향 신호(Reverse Signal)를 복조하는 기능을 수행하는 모뎀부(100)와, 수신신호 선택을 위한 신호를 생성하는 PLD(Programmable Logic Device)부(200)와, 역방향 CDMA 신호가 수신되는 통로인 데이터선(300)과, 주파수 할당(Frequency Assignment) 선택을 위한 레벨 변환기 컨트롤용 신호 통로인 신호선(400)과, 역방향 수신 CDMA 신호의 레벨을 바꾸어 주는 회로 소자로 구성된 신호레벨 변환기(500)로 이루어진다.As shown therein, the modem unit 100 performs a function of demodulating a CDMA reverse signal, a programmable logic device (PLD) unit 200 generating a signal for selecting a received signal, and a reverse CDMA. A signal level consisting of a data line 300, which is a path through which a signal is received, a signal line 400, which is a signal path for level converter control for selecting frequency assignment, and a circuit element for changing the level of a reverse received CDMA signal. Consisting of a transducer 500.

즉, 상기 모뎀부(100)는 CDMA(Code Division Multiple Access) 역방향 신호를 복조하는 기능 수행을 담당하는 블럭이고, 상기 PLD부(200)는 수신되는 신호의 선택을 위한 신호를 생성하는 기능 수행을 담당하는 블럭이고, 상기 데이터선(300)은 상기 CDMA 역방향 신호가 수신되는 통로를 나타낸 것이고, 상기 신호선(400)은주파수 할당(FA) 선택을 위한 신호레벨 변환기 컨트롤용 신호의 통로를 나타낸 것이고, 상기 신호레벨 변환기(500)는 역방향 수신 CDMA 신호의 레벨을 바꾸어 주는 장치로서, 레벨변환 소자들로 이루어진다.That is, the modem unit 100 is a block that performs a function of demodulating a code division multiple access (CDMA) reverse signal, and the PLD unit 200 performs a function of generating a signal for selecting a received signal. The data line 300 represents a path through which the CDMA reverse signal is received, and the signal line 400 represents a path of a signal level converter control signal for frequency allocation (FA) selection. The signal level converter 500 is a device for changing the level of a reverse received CDMA signal, and is composed of level converting elements.

다시 말하면, 첨부한 도면 도 1에서와 같이, 참조부호 400의 신호선이 참조부호 500의 신호레벨 변환기(레벨변환 소자)를 컨트롤하는 신호선이다. 또한, 참조부호 200의 PLD부가 만들어 내는 컨트롤 신호에 의해 세개의 레벨변환 소자(510)(520)(530)중 한 개만을 액티브(Active)시키고 나머지는 디스에이블(Disable) 시킴으로서, 참조부호 300의 데이터 선을 통해 참조부호 100의 모뎀부로 해당하는 FA(Frequency Assignment)의 신호를 인가하게 되며, 이를 통해 FA 선택 효과를 가질 수 있게 된다.In other words, as shown in FIG. 1, a signal line 400 denotes a signal line for controlling a signal level converter (level converting element) 500. In addition, only one of the three level converting elements 510, 520, and 530 is activated by the control signal generated by the PLD part of the reference numeral 200, and the rest is disabled. The signal of FA (Frequency Assignment) is applied to the modem unit of reference numeral 100 through the data line, and thus the FA selection effect can be obtained.

또한, 상기 참조부호 200의 PLD부는 환경조건이나 기지국 상태에 따라 적절히 FA를 선택할 수 있는 기능을 포함한다.In addition, the PLD unit 200 of the reference includes a function that can be selected appropriately according to the environmental conditions or the base station status.

이상에서 살펴본 바와 같이 본 발명의 상세한 설명에서는 시디엠에이 역방향 링크 신호 선택 장치에 대한 구체적인 실시 예에 대하여 설명하도록 하지만, 본 발명은 본 발명의 범위에서 벗어나지 않는 한도 내에서 여러 가지 변형이 가능하다. 그러므로 본 발명의 범위는 설명된 실시 예에 국한되어 정해져서는 안되며, 후술되는 특허청구범위뿐 아니라 이 특허 청구의 범위와 균등한 것들에 의해 정해져야 한다.As described above, in the detailed description of the present invention, a specific embodiment of the CDA reverse link signal selection device will be described. However, the present invention may be modified in various ways without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.

이상에서 상술한 본 발명 "시디엠에이 역방향 링크 신호 선택 장치"에 따르면,According to the present invention "CD-MA reverse link signal selection device" described above,

IF 보드로 전송되어 오는 CDMA(Code Division Multiple Access) 역방향 신호를 신호레벨 변환기를 조절 즉, 원하는 FA의 레벨변환 소자만을 액티브(Active)시키고, 나머지는 디스에이블 시킴으로서, 해당 FA만의 신호를 수신할 수 있으며, 이 신호를 모뎀칩에 공급할 수 있도록 함으로써, 상기 모뎀칩에서 원하는 FA의 수신신호를 수신하여 복조할 수 있는 이점을 가진다.By controlling the signal level converter, that is, only the level converting elements of the desired FA are activated, and the rest are disabled, the signals of the corresponding FA can be received by controlling the code division multiple access (CDMA) reverse signal transmitted to the IF board. In addition, by providing the signal to the modem chip, the modem chip has an advantage of receiving and demodulating a received FA signal.

또한, 상기한 구성을 통해 시스템 측면에서 시스템 운용의 활용도를 높이고, 시스템 포설시 가용한 FA의 선택을 PLD부의 내용을 수정함으로서, 전체 시스템 성능을 향상시킬 수 있는 이점을 가진다.In addition, the above configuration has the advantage of improving the utilization of system operation in terms of the system, and by modifying the contents of the PLD portion of the selection of the FA available when installing the system, it has the advantage of improving the overall system performance.

Claims (2)

CDMA 시스템에서 역방향 신호 선택 장치에 있어서,In the reverse signal selection device in a CDMA system, CDMA(Code Division Multiple Access) 역방향 신호(Reverse Signal)를 복조하는 기능을 수행하는 모뎀부와;A modem unit for performing a function of demodulating a CDMA reverse signal; 역방향 CDMA 신호가 수신되는 통로인 데이터선과;A data line which is a path through which a reverse CDMA signal is received; 주파수 할당(Frequency Assignment) 선택을 위한 레벨 변환기 컨트롤용 신호 통로인 신호선과;A signal line which is a signal path for a level converter control for selecting a frequency assignment; 역방향 수신 CDMA 신호의 레벨을 바꾸어 주는 회로 소자로 구성된 신호레벨 변환기와;A signal level converter composed of circuit elements for changing the level of the backward receiving CDMA signal; 상기 신호선을 통하여 상기 신호레벨 변환기의 동작을 제어하고, 수신신호 선택을 위한 신호를 생성하는 PLD(Programmable Logic Device)부를 포함하여 이루어진 것을 특징으로 하는 시디엠에이 역방향 링크 신호 선택 장치.And a programmable logic device (PLD) unit configured to control the operation of the signal level converter through the signal line and generate a signal for selecting a received signal. 제 1 항에 있어서,The method of claim 1, 상기 PLD부가 만들어 내는 컨트롤 신호에 의해 다수의 레벨변환 소자중 한 개만을 액티브(Active)시키고, 나머지는 디스에이블(Disable) 시킨 후, 상기 데이터선을 통해 모뎀부로 해당하는 FA의 신호를 인가하는 것을 특징으로 하는 시디엠에이 역방향 링크 신호 선택 장치.Only one of the plurality of level converting elements is activated by the control signal generated by the PLD unit, and the rest is disabled, and then a corresponding FA signal is applied to the modem unit through the data line. CD-A reverse link signal selection device characterized in that.
KR1020030018548A 2003-03-25 2003-03-25 Apparatus for selecting of CDMA reverse link signal KR20040083863A (en)

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KR1020030018548A KR20040083863A (en) 2003-03-25 2003-03-25 Apparatus for selecting of CDMA reverse link signal
PCT/KR2004/000651 WO2004086642A1 (en) 2003-03-25 2004-03-24 Apparatus for selecting cdma reverse link signal
EP04723091A EP1614228A1 (en) 2003-03-25 2004-03-24 Apparatus for selecting cdma reverse link signal

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US5551064A (en) * 1994-07-27 1996-08-27 Motorola, Inc. Method and apparatus for communication unit frequency assignment
US5740534A (en) * 1996-02-22 1998-04-14 Motorola, Inc. Method for determining available frequencies in selective call receivers
US6002934A (en) * 1997-05-02 1999-12-14 Gte Laboratories Incorporated Methods and apparatus for assigning frequencies in a cellular network

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