JPS57145448A - Receiver for selective inter-call - Google Patents

Receiver for selective inter-call

Info

Publication number
JPS57145448A
JPS57145448A JP56030566A JP3056681A JPS57145448A JP S57145448 A JPS57145448 A JP S57145448A JP 56030566 A JP56030566 A JP 56030566A JP 3056681 A JP3056681 A JP 3056681A JP S57145448 A JPS57145448 A JP S57145448A
Authority
JP
Japan
Prior art keywords
time
signal
power supply
preamble signal
synchronism
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
JP56030566A
Other languages
Japanese (ja)
Other versions
JPS6324573B2 (en
Inventor
Koji Oyagi
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 JP56030566A priority Critical patent/JPS57145448A/en
Publication of JPS57145448A publication Critical patent/JPS57145448A/en
Publication of JPS6324573B2 publication Critical patent/JPS6324573B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

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

Abstract

PURPOSE:To improve the battery saving ratio, by reducing the duration of the electrode pulse which is periodically supplied and detecting the preamble signal while securing the synchronism for each bit. CONSTITUTION:The power supply is applied to a receiving part 2 for a prescribed time x1' after closing a power supply switch 5. Thus the part 2 demodulates the receibed signal and transmits it to a control part 8. The part 8 has a monitor to discriminate the preamble signal based on the demodulated signal. If no preamble signal is detected within the time x1', the part 8 controls the switch 5 to cut the application of power supply to the part 2 for a fixed time (y') by a battery saving operation. When the preamble signal is detected for the next time x2', the power supply is secured for a certain time (alpha+beta). Then the acquisition of synchronism is carried out for the first time alpha to secure the synchronism between the demodulated signal given from the part 2 and the internal clock. In the next time beta, the confirmation is given whether the received signal is a preamble signal or not.
JP56030566A 1981-03-05 1981-03-05 Receiver for selective inter-call Granted JPS57145448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56030566A JPS57145448A (en) 1981-03-05 1981-03-05 Receiver for selective inter-call

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56030566A JPS57145448A (en) 1981-03-05 1981-03-05 Receiver for selective inter-call

Publications (2)

Publication Number Publication Date
JPS57145448A true JPS57145448A (en) 1982-09-08
JPS6324573B2 JPS6324573B2 (en) 1988-05-21

Family

ID=12307369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56030566A Granted JPS57145448A (en) 1981-03-05 1981-03-05 Receiver for selective inter-call

Country Status (1)

Country Link
JP (1) JPS57145448A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5825734A (en) * 1981-07-27 1983-02-16 インタ−ナシヨナル・スタンダ−ド・エレクトリツク・コ−ポレ−シヨン Receiver for digital radio appointment calling device and using method therefor
JPH02159130A (en) * 1988-12-12 1990-06-19 Victor Co Of Japan Ltd Data transmission system and its receiving device
JPH0579203A (en) * 1991-09-17 1993-03-30 Misawa Homes Co Ltd Bath unit for multiple dwelling house
JPH0653883A (en) * 1992-07-29 1994-02-25 Nec Corp Radio selective call receiver
JPH08172387A (en) * 1994-12-16 1996-07-02 Nec Corp Radio selective call receiver with intermittent reception function
US6445937B1 (en) 1999-12-02 2002-09-03 Lucent Technologies Inc. Methods and apparatus for mobile phone power management

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5825734A (en) * 1981-07-27 1983-02-16 インタ−ナシヨナル・スタンダ−ド・エレクトリツク・コ−ポレ−シヨン Receiver for digital radio appointment calling device and using method therefor
JPH02159130A (en) * 1988-12-12 1990-06-19 Victor Co Of Japan Ltd Data transmission system and its receiving device
JPH0579203A (en) * 1991-09-17 1993-03-30 Misawa Homes Co Ltd Bath unit for multiple dwelling house
JPH0653883A (en) * 1992-07-29 1994-02-25 Nec Corp Radio selective call receiver
JPH08172387A (en) * 1994-12-16 1996-07-02 Nec Corp Radio selective call receiver with intermittent reception function
US6445937B1 (en) 1999-12-02 2002-09-03 Lucent Technologies Inc. Methods and apparatus for mobile phone power management

Also Published As

Publication number Publication date
JPS6324573B2 (en) 1988-05-21

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