GB2397465B - Mobile radio communications device and operating method - Google Patents

Mobile radio communications device and operating method

Info

Publication number
GB2397465B
GB2397465B GB0300919A GB0300919A GB2397465B GB 2397465 B GB2397465 B GB 2397465B GB 0300919 A GB0300919 A GB 0300919A GB 0300919 A GB0300919 A GB 0300919A GB 2397465 B GB2397465 B GB 2397465B
Authority
GB
United Kingdom
Prior art keywords
sleep
communications device
mobile radio
radio communications
clock
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
GB0300919A
Other versions
GB2397465A (en
GB0300919D0 (en
Inventor
Jean-Francois Deprun
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 GB0300919A priority Critical patent/GB2397465B/en
Publication of GB0300919D0 publication Critical patent/GB0300919D0/en
Publication of GB2397465A publication Critical patent/GB2397465A/en
Application granted granted Critical
Publication of GB2397465B publication Critical patent/GB2397465B/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
    • H04W52/029—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 reducing the clock frequency of the controller
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R20/00—Setting the time according to the time information carried or implied by the radio 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

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

Abstract

A method of calibrating a sleep clock of a mobile radio communications device includes the steps of determining drift between the air interface timebase and the local timebase as controlled during sleep periods by the sleep clock, and adding the determined value of drift to a preceding calibration value to arrive at a calibration value for calibrating the sleep clock. The method allows the mobile device to remain in sleep mode for longer periods of time thus conserving more battery power, and the fast clock is not required for calibration.
GB0300919A 2003-01-15 2003-01-15 Mobile radio communications device and operating method Expired - Fee Related GB2397465B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0300919A GB2397465B (en) 2003-01-15 2003-01-15 Mobile radio communications device and operating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0300919A GB2397465B (en) 2003-01-15 2003-01-15 Mobile radio communications device and operating method

Publications (3)

Publication Number Publication Date
GB0300919D0 GB0300919D0 (en) 2003-02-12
GB2397465A GB2397465A (en) 2004-07-21
GB2397465B true GB2397465B (en) 2004-12-29

Family

ID=9951207

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0300919A Expired - Fee Related GB2397465B (en) 2003-01-15 2003-01-15 Mobile radio communications device and operating method

Country Status (1)

Country Link
GB (1) GB2397465B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US7272078B1 (en) 2006-10-12 2007-09-18 Telefonaktiebolaget L M Ericsson (Publ) Efficient clock calibration in electronic equipment
US7881895B2 (en) 2008-05-27 2011-02-01 Sony Ericsson Mobile Communications Ab Methods of calibrating a clock using multiple clock periods with a single counter and related devices and methods
CN102540868B (en) * 2010-12-31 2016-05-04 重庆重邮信科通信技术有限公司 A kind of slow clock crystal frequency compensation method of mobile communication terminal and device
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2297854A (en) * 1995-02-07 1996-08-14 Nokia Mobile Phones Ltd Real time clock
EP0924947A1 (en) * 1997-12-22 1999-06-23 The Technology Partnership Public Limited Company Power saving in a digital cellular system terminal
WO1999031912A2 (en) * 1997-12-12 1999-06-24 Koninklijke Philips Electronics N.V. Circuit for synchronizing cdma mobile phones

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2297854A (en) * 1995-02-07 1996-08-14 Nokia Mobile Phones Ltd Real time clock
WO1999031912A2 (en) * 1997-12-12 1999-06-24 Koninklijke Philips Electronics N.V. Circuit for synchronizing cdma mobile phones
EP0924947A1 (en) * 1997-12-22 1999-06-23 The Technology Partnership Public Limited Company Power saving in a digital cellular system terminal

Also Published As

Publication number Publication date
GB2397465A (en) 2004-07-21
GB0300919D0 (en) 2003-02-12

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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: 20120115