JPS57106250A - Monitor system for disturbing wave - Google Patents

Monitor system for disturbing wave

Info

Publication number
JPS57106250A
JPS57106250A JP55181366A JP18136680A JPS57106250A JP S57106250 A JPS57106250 A JP S57106250A JP 55181366 A JP55181366 A JP 55181366A JP 18136680 A JP18136680 A JP 18136680A JP S57106250 A JPS57106250 A JP S57106250A
Authority
JP
Japan
Prior art keywords
gate
control signal
vfo7
tone
counted
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
JP55181366A
Other languages
Japanese (ja)
Other versions
JPS6132857B2 (en
Inventor
Ryuhei Fujiwara
Tomokazu Kai
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 JP55181366A priority Critical patent/JPS57106250A/en
Priority to US06/332,775 priority patent/US4434506A/en
Priority to GB8138547A priority patent/GB2093316B/en
Priority to CA000392926A priority patent/CA1180053A/en
Priority to AU78839/81A priority patent/AU542828B2/en
Publication of JPS57106250A publication Critical patent/JPS57106250A/en
Publication of JPS6132857B2 publication Critical patent/JPS6132857B2/ja
Priority to SG50388A priority patent/SG50388G/en
Priority to HK371/89A priority patent/HK37189A/en
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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/20—Countermeasures against jamming
    • H04K3/22—Countermeasures against jamming including jamming detection and monitoring
    • H04K3/224—Countermeasures against jamming including jamming detection and monitoring with countermeasures at transmission and/or reception of the jammed signal, e.g. stopping operation of transmitter or receiver, nulling or enhancing transmitted power in direction of or at frequency of jammer
    • H04K3/226—Selection of non-jammed channel for communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/10—Jamming or countermeasure used for a particular application
    • H04K2203/16—Jamming or countermeasure used for a particular application for telephony
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/10—Jamming or countermeasure used for a particular application
    • H04K2203/22—Jamming or countermeasure used for a particular application for communication related to vehicles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To monitor always disturbing radio waves automatically without stopping the system even during operation, by synchronizing slave stations with a control signal from the radio base station and by providing an idle time on an up control channel. CONSTITUTION:The up response signal from a mobile equipment is received by a control channel up receiver 6, and the tone of a frequency proportional to the field value is transmitted from a VFO7 and is counted through a gate 4 by a counter 8. The gate 4 is opened only in a section gamma and is controlled by a timer 9. If the mobile equipment is caused to respond only to a control signal Pn for response request, the gate 4 is opened after a known time alpha+beta from broadcasting of a control signal P1 from the base station, and the tone for field information of the section gamma is counted to measure the field intensity. When some radio waves are received in the section gamma, the output frequency of the VFO7 is increased to detect the existence of disturbing waves.
JP55181366A 1980-12-23 1980-12-23 Monitor system for disturbing wave Granted JPS57106250A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP55181366A JPS57106250A (en) 1980-12-23 1980-12-23 Monitor system for disturbing wave
US06/332,775 US4434506A (en) 1980-12-23 1981-12-21 Circuit arrangement for protecting a control channel from jamming waves in a radio communication system
GB8138547A GB2093316B (en) 1980-12-23 1981-12-22 Circuit arrangement for protecting a control channel from jamming waves in a radio communication system
CA000392926A CA1180053A (en) 1980-12-23 1981-12-22 Circuit arrangement for protecting a control channel from jamming waves in a radio communication system
AU78839/81A AU542828B2 (en) 1980-12-23 1981-12-23 Control of radio communications system
SG50388A SG50388G (en) 1980-12-23 1988-07-23 Circuit arrangement for protecting a control channel from jamming waves in a radio communication system
HK371/89A HK37189A (en) 1980-12-23 1989-05-04 Circuit arrangement for protecting a control channel from jamming waves in a radio communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55181366A JPS57106250A (en) 1980-12-23 1980-12-23 Monitor system for disturbing wave

Publications (2)

Publication Number Publication Date
JPS57106250A true JPS57106250A (en) 1982-07-02
JPS6132857B2 JPS6132857B2 (en) 1986-07-30

Family

ID=16099463

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55181366A Granted JPS57106250A (en) 1980-12-23 1980-12-23 Monitor system for disturbing wave

Country Status (2)

Country Link
JP (1) JPS57106250A (en)
AU (1) AU542828B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61288532A (en) * 1985-06-14 1986-12-18 Nec Corp Method of detecting disturbing radio wave
JPS6412626A (en) * 1987-07-06 1989-01-17 Nippon Telegraph & Telephone Mobile communication system
JPH0555997A (en) * 1991-08-23 1993-03-05 Nec Corp Tdma mobile body communication system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61288532A (en) * 1985-06-14 1986-12-18 Nec Corp Method of detecting disturbing radio wave
JPS6412626A (en) * 1987-07-06 1989-01-17 Nippon Telegraph & Telephone Mobile communication system
JPH0555997A (en) * 1991-08-23 1993-03-05 Nec Corp Tdma mobile body communication system

Also Published As

Publication number Publication date
AU7883981A (en) 1982-07-01
AU542828B2 (en) 1985-03-14
JPS6132857B2 (en) 1986-07-30

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