JPS5636241A - Direct relay system - Google Patents

Direct relay system

Info

Publication number
JPS5636241A
JPS5636241A JP11138479A JP11138479A JPS5636241A JP S5636241 A JPS5636241 A JP S5636241A JP 11138479 A JP11138479 A JP 11138479A JP 11138479 A JP11138479 A JP 11138479A JP S5636241 A JPS5636241 A JP S5636241A
Authority
JP
Japan
Prior art keywords
signal
receiving
station
repeater station
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11138479A
Other languages
Japanese (ja)
Inventor
Kiyoaki Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP11138479A priority Critical patent/JPS5636241A/en
Publication of JPS5636241A publication Critical patent/JPS5636241A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To make it possible to make the power source unit of the repeater station small-size, by operating the power amplifier of the repeater station only when transmission loss becomes a prescribed value or more. CONSTITUTION:Repeater station 2 applies the signal from terminal 1 to receiving amplifier 14 through receiving filter 13 and amplifies the signal and transmits the signal to terminal station 3 from antenna 1 through switch 16, transmission filter 17, and equipment 18 used commonly for transmission and receiving. In terminal station 3, the receiving level is monitored by supervisory and control unit 21; and if the receiving level becomes lower than a minimum reference which is sufficient as the line quality, a control signal is transmitted to repeater station 2. When receiving this control signal, repeater station 2 closes power source switch 31 for power amplifier 33 by control circuit 25 and changes over switch 16 to transmit the signal from terminal station 1 after amplifying further this signal by power amplifier 33.
JP11138479A 1979-08-31 1979-08-31 Direct relay system Pending JPS5636241A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11138479A JPS5636241A (en) 1979-08-31 1979-08-31 Direct relay system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11138479A JPS5636241A (en) 1979-08-31 1979-08-31 Direct relay system

Publications (1)

Publication Number Publication Date
JPS5636241A true JPS5636241A (en) 1981-04-09

Family

ID=14559806

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11138479A Pending JPS5636241A (en) 1979-08-31 1979-08-31 Direct relay system

Country Status (1)

Country Link
JP (1) JPS5636241A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021199120A1 (en) * 2020-03-30 2021-10-07 日本電気株式会社 Fading prediction device, fading prediction method and fading prediction program

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021199120A1 (en) * 2020-03-30 2021-10-07 日本電気株式会社 Fading prediction device, fading prediction method and fading prediction program

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