JPS5787633A - Automatic relay system - Google Patents

Automatic relay system

Info

Publication number
JPS5787633A
JPS5787633A JP16334180A JP16334180A JPS5787633A JP S5787633 A JPS5787633 A JP S5787633A JP 16334180 A JP16334180 A JP 16334180A JP 16334180 A JP16334180 A JP 16334180A JP S5787633 A JPS5787633 A JP S5787633A
Authority
JP
Japan
Prior art keywords
antenna
signal
relaying
reception
base station
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
JP16334180A
Other languages
Japanese (ja)
Inventor
Kozo Ito
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP16334180A priority Critical patent/JPS5787633A/en
Publication of JPS5787633A publication Critical patent/JPS5787633A/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
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations

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 achieve effective use of radio lines, by performing automatic relaying only when the relay station receives a tone signal for automatic relaying and a reception signal. CONSTITUTION:Electromagnetic waves from a base station (not shown) are received at a receiver 10 through an antenna 8 and an antenna switch 9, demodulated at a signal reception section 11 and supplied to a relay controller 14. A transmitter 15 is started only when a reception signal and a tone signal requesting relaying are present at the relay controller 14, and electromagnetic waves from the base station are relayed to a mobile station (not shown) via an antenna switch 17 and a transmission/reception antenna 18. On the other hand, the electromagnetic waves from the mobile station are received at a receiver 16 via the antenna 18 and the switch 17 and supplied to the relay controller 14. The waves are relayed to the base station via a signal transmission secton, a transmitter 12 and the antenna 8 only when the tone signal requesting relaying is present.
JP16334180A 1980-11-21 1980-11-21 Automatic relay system Pending JPS5787633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16334180A JPS5787633A (en) 1980-11-21 1980-11-21 Automatic relay system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16334180A JPS5787633A (en) 1980-11-21 1980-11-21 Automatic relay system

Publications (1)

Publication Number Publication Date
JPS5787633A true JPS5787633A (en) 1982-06-01

Family

ID=15772022

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16334180A Pending JPS5787633A (en) 1980-11-21 1980-11-21 Automatic relay system

Country Status (1)

Country Link
JP (1) JPS5787633A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62263726A (en) * 1986-05-09 1987-11-16 Aikomu Kk Repeater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62263726A (en) * 1986-05-09 1987-11-16 Aikomu Kk Repeater
JPH0378806B2 (en) * 1986-05-09 1991-12-16 Icom Inc

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