GB2393610B - Mobile radio communications device and operating method - Google Patents

Mobile radio communications device and operating method

Info

Publication number
GB2393610B
GB2393610B GB0222367A GB0222367A GB2393610B GB 2393610 B GB2393610 B GB 2393610B GB 0222367 A GB0222367 A GB 0222367A GB 0222367 A GB0222367 A GB 0222367A GB 2393610 B GB2393610 B GB 2393610B
Authority
GB
United Kingdom
Prior art keywords
clock
timebase
communications device
mobile radio
operating method
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
GB0222367A
Other versions
GB2393610A (en
GB0222367D0 (en
Inventor
Richard Ormson
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 GB0222367A priority Critical patent/GB2393610B/en
Publication of GB0222367D0 publication Critical patent/GB0222367D0/en
Publication of GB2393610A publication Critical patent/GB2393610A/en
Application granted granted Critical
Publication of GB2393610B publication Critical patent/GB2393610B/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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0079—Receiver details
    • H04L7/0083—Receiver details taking measures against momentary loss of synchronisation, e.g. inhibiting the synchronisation, using idle words or using redundant clocks
    • 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)
  • Transceivers (AREA)
  • Telephone Function (AREA)

Abstract

There is provided a method of controlling calibration of a sleep clock 20 by a master clock 18 within the mobile device 10 e.g. GSM handset. The method includes determining the drift between an air interface timebase contained in a received signal 30 and the local timebase 14, which in sleep mode is controlled by the 32Khz slow sleep clock. During active periods, the timebase is driven by higher power consumption high frequency clock 18. The slow sleep clock 18 is calibrated if the drift exceeds a threshold, for example one symbol width.
GB0222367A 2002-09-26 2002-09-26 Mobile radio communications device and operating method Expired - Fee Related GB2393610B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0222367A GB2393610B (en) 2002-09-26 2002-09-26 Mobile radio communications device and operating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0222367A GB2393610B (en) 2002-09-26 2002-09-26 Mobile radio communications device and operating method

Publications (3)

Publication Number Publication Date
GB0222367D0 GB0222367D0 (en) 2002-11-06
GB2393610A GB2393610A (en) 2004-03-31
GB2393610B true GB2393610B (en) 2005-11-02

Family

ID=9944815

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0222367A Expired - Fee Related GB2393610B (en) 2002-09-26 2002-09-26 Mobile radio communications device and operating method

Country Status (1)

Country Link
GB (1) GB2393610B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7362263B2 (en) * 2003-09-04 2008-04-22 Seiko Epson Corporation Keeping accurate time for a hybrid GPS receiver and mobile phone when powered off
CN100405863C (en) * 2005-03-23 2008-07-23 大唐移动通信设备有限公司 Method for regulating sleeping processor in mobile terminal machine process
GB201108512D0 (en) 2011-05-20 2011-07-06 Renesas Mobile Corp Method and apparatus for calibrating sleep clocks
GB2491001B (en) * 2011-05-20 2013-05-08 Renesas Mobile Corp Method and apparatus for calibrating sleep clocks
CN106211307A (en) * 2015-05-04 2016-12-07 深圳市中兴微电子技术有限公司 Clock correcting method and device under a kind of multi-mode baseband chip
CN114237020B (en) 2021-12-10 2023-09-26 合肥兆芯电子有限公司 Method for calibrating timer and electronic device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2297884A (en) * 1995-02-07 1996-08-14 Nokia Mobile Phones Ltd Power saving arrangement in a mobile telephone
GB2320398A (en) * 1996-12-12 1998-06-17 Nec Technologies Time Base Alignment for Digital Mobile Phones

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2297884A (en) * 1995-02-07 1996-08-14 Nokia Mobile Phones Ltd Power saving arrangement in a mobile telephone
GB2320398A (en) * 1996-12-12 1998-06-17 Nec Technologies Time Base Alignment for Digital Mobile Phones

Also Published As

Publication number Publication date
GB2393610A (en) 2004-03-31
GB0222367D0 (en) 2002-11-06

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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: 20110926