JPS57199345A - Mobile radio communication system - Google Patents

Mobile radio communication system

Info

Publication number
JPS57199345A
JPS57199345A JP56084818A JP8481881A JPS57199345A JP S57199345 A JPS57199345 A JP S57199345A JP 56084818 A JP56084818 A JP 56084818A JP 8481881 A JP8481881 A JP 8481881A JP S57199345 A JPS57199345 A JP S57199345A
Authority
JP
Japan
Prior art keywords
mobile station
output
field
circuit
received
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
JP56084818A
Other languages
Japanese (ja)
Other versions
JPS6351580B2 (en
Inventor
Tomokazu Kai
Hiroshi Kubo
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 JP56084818A priority Critical patent/JPS57199345A/en
Publication of JPS57199345A publication Critical patent/JPS57199345A/en
Publication of JPS6351580B2 publication Critical patent/JPS6351580B2/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

Abstract

PURPOSE:To hold and clear a communication line surely, by appealing to ears and eyes of the subscriber of a mobile station to stop the movement of the mobile station or return to the service area when the received input electric field in the mobile station is a certain level or less in the mobile communication system. CONSTITUTION:When a mobile station 2 passes a line 3 of received input field 10dBmu and the received field becomes weak, the output potential of a comparator 12 becomes high-potential. A gate circuit 16 is turned on to output an alarm indication, and therefore, the output of a tone signal 17 is applied to a receiver sound circuit. When the mobile station runs furthermore and the received input field is lower than 0bBmu, a timer circuit 18 starts counting, and the received field is not restored to 0dBmu. When the timer circuit 18 counts a prescribed time, the output potential becomes high to break a switch circuit of a transmitter 9. Thus, the line is disconnected and is forcibly cleared, and another mobile station uses this radio frequency.
JP56084818A 1981-06-01 1981-06-01 Mobile radio communication system Granted JPS57199345A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56084818A JPS57199345A (en) 1981-06-01 1981-06-01 Mobile radio communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56084818A JPS57199345A (en) 1981-06-01 1981-06-01 Mobile radio communication system

Publications (2)

Publication Number Publication Date
JPS57199345A true JPS57199345A (en) 1982-12-07
JPS6351580B2 JPS6351580B2 (en) 1988-10-14

Family

ID=13841319

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56084818A Granted JPS57199345A (en) 1981-06-01 1981-06-01 Mobile radio communication system

Country Status (1)

Country Link
JP (1) JPS57199345A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0236946A2 (en) * 1986-03-07 1987-09-16 Nec Corporation Mobile receiver unit having function for providing information of electric field intensity
JPS6432541A (en) * 1987-07-28 1989-02-02 Kanda Tsushin Kogyo Kk Mobile communication system
JPH05167515A (en) * 1991-12-13 1993-07-02 Japan Radio Co Ltd Tracking exchange processing system for cordless mobile telephone set
JP2014140093A (en) * 2013-01-21 2014-07-31 Ntt Docomo Inc Auxiliary device and auxiliary system for receiving broadcast wave for communication terminal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5475201A (en) * 1977-11-28 1979-06-15 Nec Corp Radiotelephony unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5475201A (en) * 1977-11-28 1979-06-15 Nec Corp Radiotelephony unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0236946A2 (en) * 1986-03-07 1987-09-16 Nec Corporation Mobile receiver unit having function for providing information of electric field intensity
JPS6432541A (en) * 1987-07-28 1989-02-02 Kanda Tsushin Kogyo Kk Mobile communication system
JPH05167515A (en) * 1991-12-13 1993-07-02 Japan Radio Co Ltd Tracking exchange processing system for cordless mobile telephone set
JP2014140093A (en) * 2013-01-21 2014-07-31 Ntt Docomo Inc Auxiliary device and auxiliary system for receiving broadcast wave for communication terminal

Also Published As

Publication number Publication date
JPS6351580B2 (en) 1988-10-14

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