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GB2329795B - High resolution clock reconstruction for use in a mobile telecommunication device - Google Patents

High resolution clock reconstruction for use in a mobile telecommunication device

Info

Publication number
GB2329795B
GB2329795B GB9720532A GB9720532A GB2329795B GB 2329795 B GB2329795 B GB 2329795B GB 9720532 A GB9720532 A GB 9720532A GB 9720532 A GB9720532 A GB 9720532A GB 2329795 B GB2329795 B GB 2329795B
Authority
GB
United Kingdom
Prior art keywords
high resolution
oscillator
telecommunication device
mobile telecommunication
restart value
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.)
Expired - Fee Related
Application number
GB9720532A
Other versions
GB9720532D0 (en
GB2329795A (en
Inventor
David Cooper
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 Technologies UK Ltd
Original Assignee
NEC Technologies UK 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 Technologies UK Ltd filed Critical NEC Technologies UK Ltd
Priority to GB9720532A priority Critical patent/GB2329795B/en
Publication of GB9720532D0 publication Critical patent/GB9720532D0/en
Priority to AU87109/98A priority patent/AU718828B2/en
Priority to CN98124604A priority patent/CN1118973C/en
Priority to JP10273626A priority patent/JPH11183661A/en
Publication of GB2329795A publication Critical patent/GB2329795A/en
Application granted granted Critical
Publication of GB2329795B publication Critical patent/GB2329795B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0287—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level changing the clock frequency of a controller in the equipment
    • H04W52/0293—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level changing the clock frequency of a controller in the equipment having a sub-controller with a low clock frequency switching on and off a main controller with a high clock frequency
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
    • H04B15/04—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder
    • 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)
  • Devices For Supply Of Signal Current (AREA)
  • Manipulation Of Pulses (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Electric Clocks (AREA)
  • Telephone Function (AREA)

Abstract

A mobile telecommunication device such as a mobile phone includes a high frequency, high accuracy clock oscillator 20 and a high resolution counter 22 for counting pulses from the main oscillator for controlling the timing of communication operations. A continuously running secondary low frequency clock oscillator 25 is provided for timing sleep intervals when the main oscillator is switched off for power saving purposes. Counters 27, 28 are provided for cyclically switching the main oscillator on and off periodically for time intervals determined by the secondary clock. Means 23, 24 is provided for loading the high resolution counter with a restart value at the commencement of the on phase of each cycle, the restart value being determined in accordance with the restart value in the previous cycle and the total time elapsed since the previous start.
GB9720532A 1997-09-27 1997-09-27 High resolution clock reconstruction for use in a mobile telecommunication device Expired - Fee Related GB2329795B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB9720532A GB2329795B (en) 1997-09-27 1997-09-27 High resolution clock reconstruction for use in a mobile telecommunication device
AU87109/98A AU718828B2 (en) 1997-09-27 1998-09-25 High resolution clock reconstruction for use in a mobile telecommunication device
CN98124604A CN1118973C (en) 1997-09-27 1998-09-27 High-resolution clock reconstruction used in mobile communication equipment
JP10273626A JPH11183661A (en) 1997-09-27 1998-09-28 Mobile communication device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9720532A GB2329795B (en) 1997-09-27 1997-09-27 High resolution clock reconstruction for use in a mobile telecommunication device

Publications (3)

Publication Number Publication Date
GB9720532D0 GB9720532D0 (en) 1997-11-26
GB2329795A GB2329795A (en) 1999-03-31
GB2329795B true GB2329795B (en) 2002-09-25

Family

ID=10819708

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9720532A Expired - Fee Related GB2329795B (en) 1997-09-27 1997-09-27 High resolution clock reconstruction for use in a mobile telecommunication device

Country Status (4)

Country Link
JP (1) JPH11183661A (en)
CN (1) CN1118973C (en)
AU (1) AU718828B2 (en)
GB (1) GB2329795B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2791853B1 (en) 1999-04-01 2001-05-25 Sagem MOBILE APPARATUS AND METHOD FOR MANAGING A SLEEP MODE IN SUCH A MOBILE APPARATUS
JP2002164841A (en) 2000-11-29 2002-06-07 Nec Corp Control apparatus and its method of cellphone
KR100393491B1 (en) * 2001-08-17 2003-08-02 엘지전자 주식회사 Time information setting method in Global System for Mobile Communications
JP4064150B2 (en) 2002-05-20 2008-03-19 シャープ株式会社 Wireless communication apparatus and wireless communication apparatus control method
CN100358300C (en) * 2004-08-16 2007-12-26 Ut斯达康通讯有限公司 Network element restart detecting method
US7720451B2 (en) 2004-12-03 2010-05-18 Itt Manufacturing Enterprises, Inc. Methods and apparatus for calibrating oscillators in a receiver
US7734264B2 (en) 2006-08-29 2010-06-08 Qualcomm Incorporated System frame number (SFN) evaluator
CN102006056A (en) * 2009-08-28 2011-04-06 炬力集成电路设计有限公司 Integrated circuit and method for obtaining reference clock in integrated circuit
GB2501136B (en) * 2012-08-08 2017-08-30 George Hoptroff Richard Method for calibration of timepieces
US10788883B2 (en) * 2017-05-26 2020-09-29 Arm Ltd Timer for low-power communications systems
US10588087B2 (en) 2017-05-26 2020-03-10 Arm Limited Timer for low-power communications systems
GB201800552D0 (en) 2018-01-12 2018-02-28 Nordic Semiconductor Asa Clock calibration
CN111162737B (en) * 2019-09-02 2021-02-05 奉加微电子（上海）有限公司 Working method and working system of real-time clock
WO2023141813A1 (en) * 2022-01-26 2023-08-03 京东方科技集团股份有限公司 Scheduled startup control method and electronic device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0586256A2 (en) * 1992-09-04 1994-03-09 Nokia Mobile Phones Ltd. Time measurement system
WO1995010141A1 (en) * 1993-10-01 1995-04-13 Motorola Inc. Adaptive radio receiver controller method and apparatus
GB2297884A (en) * 1995-02-07 1996-08-14 Nokia Mobile Phones Ltd Power saving arrangement in a mobile telephone
GB2297854A (en) * 1995-02-07 1996-08-14 Nokia Mobile Phones Ltd Real time clock
EP0758768A2 (en) * 1995-08-11 1997-02-19 Rockwell International Corporation An apparatus and method of providing an extremely low-power self-awakening function to a processing unit of a communication system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0586256A2 (en) * 1992-09-04 1994-03-09 Nokia Mobile Phones Ltd. Time measurement system
WO1995010141A1 (en) * 1993-10-01 1995-04-13 Motorola Inc. Adaptive radio receiver controller method and apparatus
GB2297884A (en) * 1995-02-07 1996-08-14 Nokia Mobile Phones Ltd Power saving arrangement in a mobile telephone
GB2297854A (en) * 1995-02-07 1996-08-14 Nokia Mobile Phones Ltd Real time clock
EP0758768A2 (en) * 1995-08-11 1997-02-19 Rockwell International Corporation An apparatus and method of providing an extremely low-power self-awakening function to a processing unit of a communication system

Also Published As

Publication number Publication date
AU718828B2 (en) 2000-04-20
AU8710998A (en) 1999-04-22
GB9720532D0 (en) 1997-11-26
CN1215266A (en) 1999-04-28
GB2329795A (en) 1999-03-31
CN1118973C (en) 2003-08-20
JPH11183661A (en) 1999-07-09

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070927