JPS57141146A - Radio repeating device - Google Patents

Radio repeating device

Info

Publication number
JPS57141146A
JPS57141146A JP2749781A JP2749781A JPS57141146A JP S57141146 A JPS57141146 A JP S57141146A JP 2749781 A JP2749781 A JP 2749781A JP 2749781 A JP2749781 A JP 2749781A JP S57141146 A JPS57141146 A JP S57141146A
Authority
JP
Japan
Prior art keywords
station
electric field
base station
relay
repeating
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
JP2749781A
Other languages
Japanese (ja)
Inventor
Minoru Sakata
Tsutomu Tomita
Yoshiteru Uemai
Takahiro Yokota
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP2749781A priority Critical patent/JPS57141146A/en
Publication of JPS57141146A publication Critical patent/JPS57141146A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

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

Abstract

PURPOSE:To prevent the generation of beat disturbance at a base station and the deterioration of an S/N ratio by controlling the actuation start time of a repeating station and by inhibiting the actuation start, i.e., the transmission to the base station of an unnecessary repeating station. CONSTITUTION:Receivers Rx1 and Rx1' receive signals from a mobile station, and receivers Rx2 and Rx2' receive signals from an adjacent repeater. Circuits N and N' have operation characteristics that a relay B is operated slow when the intensity of an electric field is small or fast when large. When the mobile station Z sends a signal for communication with a base station, it is received by repeating stations X and Y at the same time, but both the stations X and Y normally have a difference in incoming electric field. When the incoming electric field of the station X is greater than that of the station Y, a transmitter Tx is actuated to perform transmission. At the station Y, on the other hand, the incoming electric field SSI is small, the operation of a relay B' is delayed, and a relay D' is operated by a signal from the adjacent station to the base station while a transmitter is not driven.
JP2749781A 1981-02-26 1981-02-26 Radio repeating device Pending JPS57141146A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2749781A JPS57141146A (en) 1981-02-26 1981-02-26 Radio repeating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2749781A JPS57141146A (en) 1981-02-26 1981-02-26 Radio repeating device

Publications (1)

Publication Number Publication Date
JPS57141146A true JPS57141146A (en) 1982-09-01

Family

ID=12222771

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2749781A Pending JPS57141146A (en) 1981-02-26 1981-02-26 Radio repeating device

Country Status (1)

Country Link
JP (1) JPS57141146A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62135028A (en) * 1985-12-06 1987-06-18 Fujitsu Ltd Automatic line selection system
JP2008182547A (en) * 2007-01-25 2008-08-07 Icom Inc Radio communication system, control method thereof and server
JP2010045490A (en) * 2008-08-11 2010-02-25 Shinshu Univ Method for controlling regional crime prevention system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62135028A (en) * 1985-12-06 1987-06-18 Fujitsu Ltd Automatic line selection system
JP2008182547A (en) * 2007-01-25 2008-08-07 Icom Inc Radio communication system, control method thereof and server
JP2010045490A (en) * 2008-08-11 2010-02-25 Shinshu Univ Method for controlling regional crime prevention system

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