GB201206996D0 - Method and apparatus for calibrating sleep clocks - Google Patents

Method and apparatus for calibrating sleep clocks

Info

Publication number
GB201206996D0
GB201206996D0 GBGB1206996.9A GB201206996A GB201206996D0 GB 201206996 D0 GB201206996 D0 GB 201206996D0 GB 201206996 A GB201206996 A GB 201206996A GB 201206996 D0 GB201206996 D0 GB 201206996D0
Authority
GB
United Kingdom
Prior art keywords
quality
calibration
clock
error caused
sleep
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
GBGB1206996.9A
Other versions
GB2491001B (en
GB2491001A (en
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.)
Renesas Electronics Corp
Original Assignee
Renesas Mobile 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
Priority claimed from GBGB1108512.3A external-priority patent/GB201108512D0/en
Application filed by Renesas Mobile Corp filed Critical Renesas Mobile Corp
Publication of GB201206996D0 publication Critical patent/GB201206996D0/en
Publication of GB2491001A publication Critical patent/GB2491001A/en
Application granted granted Critical
Publication of GB2491001B publication Critical patent/GB2491001B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0035—Synchronisation arrangements detecting errors in frequency or phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • 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

Abstract

When in a power saving sleep mode, a wireless communication device uses a low quality, low frequency sleep clock to time when the device should awaken. The sleep clock is calibrated using a fast clock of the device which functions when the device is awake. The device also determines the quality of the calibration. The device may be a user device or a base station. In one embodiment (Fig. 3B) the device compares the quality of a new calibration and the quality of an older calibration and uses the new calibration only if it has higher quality. The determination of quality may be based on the error caused by temperature drift or/and the error caused by the resolution of the fast clock (referred to as the phase error).
GB1206996.9A 2011-05-20 2011-11-29 Method and apparatus for calibrating sleep clocks Expired - Fee Related GB2491001B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201113112039A 2011-05-20 2011-05-20
GBGB1108512.3A GB201108512D0 (en) 2011-05-20 2011-05-20 Method and apparatus for calibrating sleep clocks

Publications (3)

Publication Number Publication Date
GB201206996D0 true GB201206996D0 (en) 2012-06-06
GB2491001A GB2491001A (en) 2012-11-21
GB2491001B GB2491001B (en) 2013-05-08

Family

ID=46261641

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1206996.9A Expired - Fee Related GB2491001B (en) 2011-05-20 2011-11-29 Method and apparatus for calibrating sleep clocks

Country Status (2)

Country Link
GB (1) GB2491001B (en)
WO (1) WO2012160490A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013109818B4 (en) * 2013-09-09 2015-05-13 Intel IP Corporation Data processing apparatus and method for determining a clock ratio
US9386552B2 (en) 2013-09-30 2016-07-05 Honeywell International Inc. Wireless sensor time synchronization
US10149261B2 (en) 2013-11-04 2018-12-04 Qualcomm Incorporated Methods and systems for mobile device clock management
CN107800388A (en) * 2017-10-17 2018-03-13 广东美的制冷设备有限公司 Control method, control device, storage medium and remote control
GB201800552D0 (en) 2018-01-12 2018-02-28 Nordic Semiconductor Asa Clock calibration
US10390305B1 (en) * 2018-05-16 2019-08-20 Qualcomm Incorporated Timing calibration control in extended discontinuous reception
CN113453325B (en) * 2021-06-25 2022-11-01 展讯通信（上海）有限公司 Crystal oscillator clock calibration method, device, equipment and medium

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6473607B1 (en) * 1998-06-01 2002-10-29 Broadcom Corporation Communication device with a self-calibrating sleep timer
US6725067B1 (en) * 2000-03-24 2004-04-20 International Business Machines Corporation Method and system for restarting a reference clock of a mobile station after a sleep period with a zero mean time error
GB2393610B (en) * 2002-09-26 2005-11-02 Nec Technologies Mobile radio communications device and operating method
US7463910B2 (en) * 2005-03-10 2008-12-09 Qualcomm Incorporated Apparatus and method for determining sleep clock timing
US7529531B2 (en) * 2005-11-09 2009-05-05 Qualcomm, Incorporated Apparatus and methods for estimating a sleep clock frequency
CN1777310A (en) * 2005-11-25 2006-05-24 凯明信息科技股份有限公司 Clock correcting method and device
US8135553B2 (en) * 2008-07-31 2012-03-13 Mediatek Inc. Method for clock calibration
WO2011113377A2 (en) * 2011-04-26 2011-09-22 华为技术有限公司 Method and apparatus for calibrating low frequency clock

Also Published As

Publication number Publication date
GB2491001B (en) 2013-05-08
GB2491001A (en) 2012-11-21
WO2012160490A1 (en) 2012-11-29

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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)

Free format text: REGISTERED BETWEEN 20140102 AND 20140108

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20140109 AND 20140115

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20161129