FR2347839A1 - Duplex mode radio telephone system - employs variable switching delay dependent on signal quality for retransmission of signal - Google Patents

Duplex mode radio telephone system - employs variable switching delay dependent on signal quality for retransmission of signal

Info

Publication number
FR2347839A1
FR2347839A1 FR7710649A FR7710649A FR2347839A1 FR 2347839 A1 FR2347839 A1 FR 2347839A1 FR 7710649 A FR7710649 A FR 7710649A FR 7710649 A FR7710649 A FR 7710649A FR 2347839 A1 FR2347839 A1 FR 2347839A1
Authority
FR
France
Prior art keywords
signal
telephone system
radio telephone
retransmission
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.)
Withdrawn
Application number
FR7710649A
Other languages
French (fr)
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of FR2347839A1 publication Critical patent/FR2347839A1/en
Withdrawn legal-status Critical Current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)

Abstract

A radio telephone system comprises a fixed central station with which a mobile station communicates in duplex mode via one of a number of fixed stations at different locations. The fixed station used is that providing best quality communication. Ina radio telephone system the distant fixed station contains a receiver (8) with an IF stage (82). A switching circuit (14) routes the signal for retransmission to the central fixed station when the communication quality is satisfactory. A variable delay circuit (12) is coupled to the IF stage via an amplifier (9) and rectifier circuit (10) driving a switching pulse generator (15). In p signal conditions switching is delayed allowing another station to operate.
FR7710649A 1976-04-07 1977-04-07 Duplex mode radio telephone system - employs variable switching delay dependent on signal quality for retransmission of signal Withdrawn FR2347839A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762614918 DE2614918B2 (en) 1976-04-07 1976-04-07 Radiotelephone system

Publications (1)

Publication Number Publication Date
FR2347839A1 true FR2347839A1 (en) 1977-11-04

Family

ID=5974619

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7710649A Withdrawn FR2347839A1 (en) 1976-04-07 1977-04-07 Duplex mode radio telephone system - employs variable switching delay dependent on signal quality for retransmission of signal

Country Status (7)

Country Link
BE (1) BE853207A (en)
DE (1) DE2614918B2 (en)
DK (1) DK152177A (en)
ES (1) ES457218A1 (en)
FR (1) FR2347839A1 (en)
LU (1) LU77058A1 (en)
NL (1) NL7703800A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006807A1 (en) * 1978-06-27 1980-01-09 COMMISSARIAT A L'ENERGIE ATOMIQUE Etablissement de Caractère Scientifique Technique et Industriel Arrangement for a multiplexed hertzian channel

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2821065A1 (en) * 1978-05-13 1979-11-15 Standard Elektrik Lorenz Ag Computer-controlled radio signal and position finder - gives high communication reliability by selecting strongest of three signals using evaluation unit
DE2907611C2 (en) * 1979-02-27 1981-04-23 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Automatic receiver selection for radio control centers
JPS55127741A (en) * 1979-03-26 1980-10-02 Nissan Motor Co Ltd Vehicle communication unit
DE3020176A1 (en) * 1980-05-28 1981-12-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt METHOD AND ARRANGEMENT FOR SIMULTANEOUSLY SENDING MESSAGES ON SEVERAL SAME-WAVE TRANSMITTERS
DE3210298A1 (en) * 1982-03-20 1983-09-29 Robert Bosch Gmbh, 7000 Stuttgart Diversity radio network
DE3418082C1 (en) * 1984-05-16 1985-10-17 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Arrangement for receiver selection in a radio system
DE3539698C2 (en) * 1985-11-08 1994-11-24 Siemens Ag Radio system for transmitting information for fixed and mobile subscriber stations

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006807A1 (en) * 1978-06-27 1980-01-09 COMMISSARIAT A L'ENERGIE ATOMIQUE Etablissement de Caractère Scientifique Technique et Industriel Arrangement for a multiplexed hertzian channel
FR2430143A1 (en) * 1978-06-27 1980-01-25 Commissariat Energie Atomique MULTIPLEXED HERTZIAN LINK DEVICE

Also Published As

Publication number Publication date
DK152177A (en) 1977-10-08
BE853207A (en) 1977-08-01
DE2614918B2 (en) 1978-03-09
LU77058A1 (en) 1977-08-09
ES457218A1 (en) 1978-02-01
NL7703800A (en) 1977-10-11
DE2614918A1 (en) 1977-10-13

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Legal Events

Date Code Title Description
ST Notification of lapse