JPS57106246A - Radio communication system - Google Patents

Radio communication system

Info

Publication number
JPS57106246A
JPS57106246A JP55181368A JP18136880A JPS57106246A JP S57106246 A JPS57106246 A JP S57106246A JP 55181368 A JP55181368 A JP 55181368A JP 18136880 A JP18136880 A JP 18136880A JP S57106246 A JPS57106246 A JP S57106246A
Authority
JP
Japan
Prior art keywords
channel
service
receivers
transmitter
control channel
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.)
Granted
Application number
JP55181368A
Other languages
Japanese (ja)
Other versions
JPS6342984B2 (en
Inventor
Hidetoshi Nakahara
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP55181368A priority Critical patent/JPS57106246A/en
Publication of JPS57106246A publication Critical patent/JPS57106246A/en
Publication of JPS6342984B2 publication Critical patent/JPS6342984B2/ja
Granted 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
    • H04B7/2621—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using frequency division multiple access [FDMA]

Landscapes

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

Abstract

PURPOSE:To recover accidents such as lowering of service in a short time to improve the reliability of the system, by using a service channel as a control channel in the land mobile radiotelephony system. CONSTITUTION:If a control channel P1 cannot be used by disturbing waves or the like in a radio zone Z2, the use of the channel P1 is stopped to use a channel S6 out of service channels S4-S6 as a new control channel in the zone Z2. In this case, in a radio base station B2, transmission and receiving frequencies for the channel P1 of transmitter and receivers 1 and 2 for the control channel are switched to those for the channel S6 by a switch 3, and connections of lines 14 and 15 to transmitter and receivers 12 and 13 for the service channel S6 are disconnected. Consequently, frequencies of transmitter and receivers for the channel P1 are switched to those for the channel S6 in base stations B1 and B3.
JP55181368A 1980-12-23 1980-12-23 Radio communication system Granted JPS57106246A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55181368A JPS57106246A (en) 1980-12-23 1980-12-23 Radio communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55181368A JPS57106246A (en) 1980-12-23 1980-12-23 Radio communication system

Publications (2)

Publication Number Publication Date
JPS57106246A true JPS57106246A (en) 1982-07-02
JPS6342984B2 JPS6342984B2 (en) 1988-08-26

Family

ID=16099496

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55181368A Granted JPS57106246A (en) 1980-12-23 1980-12-23 Radio communication system

Country Status (1)

Country Link
JP (1) JPS57106246A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566562A1 (en) * 1984-06-21 1985-12-27 Int Standard Electric Corp CELLULAR MOBILE RADIOTELEPHONY SYSTEM
JPH01314031A (en) * 1988-06-13 1989-12-19 Nec Corp System for assigning frequency to radio control line
US6872649B2 (en) 1999-04-15 2005-03-29 Sumitomo Electric Industries, Ltd. Method of manufacturing transparent conductor film and compound semiconductor light-emitting device with the film
US7348195B2 (en) 1999-08-25 2008-03-25 Sharp Kabushiki Kaisha Semiconductor light-emitting device and method for fabricating the device
US7495263B2 (en) 2000-02-07 2009-02-24 Sharp Kabushiki Kaisha Semiconductor light-emitting device and manufacturing method therefor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5329443A (en) * 1976-09-01 1978-03-18 Hitachi Ltd Speed change drive means
JPS5448411A (en) * 1977-09-26 1979-04-17 Nippon Telegr & Teleph Corp <Ntt> Control system for mobile communication
JPS54129803A (en) * 1978-03-31 1979-10-08 Nippon Telegr & Teleph Corp <Ntt> Control system for mobile communication line

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5329443A (en) * 1976-09-01 1978-03-18 Hitachi Ltd Speed change drive means
JPS5448411A (en) * 1977-09-26 1979-04-17 Nippon Telegr & Teleph Corp <Ntt> Control system for mobile communication
JPS54129803A (en) * 1978-03-31 1979-10-08 Nippon Telegr & Teleph Corp <Ntt> Control system for mobile communication line

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566562A1 (en) * 1984-06-21 1985-12-27 Int Standard Electric Corp CELLULAR MOBILE RADIOTELEPHONY SYSTEM
JPH01314031A (en) * 1988-06-13 1989-12-19 Nec Corp System for assigning frequency to radio control line
US6872649B2 (en) 1999-04-15 2005-03-29 Sumitomo Electric Industries, Ltd. Method of manufacturing transparent conductor film and compound semiconductor light-emitting device with the film
US6876003B1 (en) 1999-04-15 2005-04-05 Sumitomo Electric Industries, Ltd. Semiconductor light-emitting device, method of manufacturing transparent conductor film and method of manufacturing compound semiconductor light-emitting device
US7348195B2 (en) 1999-08-25 2008-03-25 Sharp Kabushiki Kaisha Semiconductor light-emitting device and method for fabricating the device
US7495263B2 (en) 2000-02-07 2009-02-24 Sharp Kabushiki Kaisha Semiconductor light-emitting device and manufacturing method therefor

Also Published As

Publication number Publication date
JPS6342984B2 (en) 1988-08-26

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