JPS55147047A - Callout reception system for mobile radio - Google Patents

Callout reception system for mobile radio

Info

Publication number
JPS55147047A
JPS55147047A JP5471979A JP5471979A JPS55147047A JP S55147047 A JPS55147047 A JP S55147047A JP 5471979 A JP5471979 A JP 5471979A JP 5471979 A JP5471979 A JP 5471979A JP S55147047 A JPS55147047 A JP S55147047A
Authority
JP
Japan
Prior art keywords
control section
frequency
signal
detector
syc14
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
JP5471979A
Other languages
Japanese (ja)
Inventor
Masayoshi Shintaku
Takanori Utano
Hideaki Omori
Kenkichi Hiraide
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP5471979A priority Critical patent/JPS55147047A/en
Publication of JPS55147047A publication Critical patent/JPS55147047A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To make small the size of receiver, by performing the presence of electromagnetic waves of radio channel in service area with the detection of synchronizing signal. CONSTITUTION:The memory of reception frequency is provided at the control section 15, the radio channel of service area assigned to the subscriber is stored, and with the instruction of the control section 15, the frequency synthesizer SYC14 sequentially oscillates a plurality of local oscillation frequencies to receive a plurality of radio channels. At the application of receiver power supply, the control section 15 stops the operation of the code detector 13, and the frame synchronizing signal detector 16 feeds the signal of out of synchronism to the control section 15 since the synchronism can not be detected due to noise only. When the control section 15 receives this signal, the frequency to be detected is determined from the memory and sets the frequency at the SYC14. When electromagnetic waves are received, the digital signal is input to the detector 16 and if it is detected as normal pattern signal, it is informed to the control section. The control section holds the frequency of SYC14 and operates the detector 13.
JP5471979A 1979-05-07 1979-05-07 Callout reception system for mobile radio Pending JPS55147047A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5471979A JPS55147047A (en) 1979-05-07 1979-05-07 Callout reception system for mobile radio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5471979A JPS55147047A (en) 1979-05-07 1979-05-07 Callout reception system for mobile radio

Publications (1)

Publication Number Publication Date
JPS55147047A true JPS55147047A (en) 1980-11-15

Family

ID=12978602

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5471979A Pending JPS55147047A (en) 1979-05-07 1979-05-07 Callout reception system for mobile radio

Country Status (1)

Country Link
JP (1) JPS55147047A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6448536A (en) * 1987-08-18 1989-02-23 Iwatsu Electric Co Ltd Communication method and system for mobile body communication
JPS6458134A (en) * 1987-08-28 1989-03-06 Iwatsu Electric Co Ltd Method and system for mobile body communication
JPH01259634A (en) * 1988-04-08 1989-10-17 Nippon Telegr & Teleph Corp <Ntt> Radio receiver
US6057783A (en) * 1997-03-26 2000-05-02 Nec Corporation Multi-area radio pager with repeated resynchronizations interposed by frequency scanning process

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5185603A (en) * 1975-01-24 1976-07-27 Tokyo Shibaura Electric Co

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5185603A (en) * 1975-01-24 1976-07-27 Tokyo Shibaura Electric Co

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6448536A (en) * 1987-08-18 1989-02-23 Iwatsu Electric Co Ltd Communication method and system for mobile body communication
JPS6458134A (en) * 1987-08-28 1989-03-06 Iwatsu Electric Co Ltd Method and system for mobile body communication
JPH01259634A (en) * 1988-04-08 1989-10-17 Nippon Telegr & Teleph Corp <Ntt> Radio receiver
US6057783A (en) * 1997-03-26 2000-05-02 Nec Corporation Multi-area radio pager with repeated resynchronizations interposed by frequency scanning process

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