DE60042080D1 - Verfahren und einrichtung zum wiederaufwecken einer mobilstation nach einer auszeit - Google Patents

Verfahren und einrichtung zum wiederaufwecken einer mobilstation nach einer auszeit

Info

Publication number
DE60042080D1
DE60042080D1 DE60042080T DE60042080T DE60042080D1 DE 60042080 D1 DE60042080 D1 DE 60042080D1 DE 60042080 T DE60042080 T DE 60042080T DE 60042080 T DE60042080 T DE 60042080T DE 60042080 D1 DE60042080 D1 DE 60042080D1
Authority
DE
Germany
Prior art keywords
sleep
mode clock
time
wake
frequency
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 - Lifetime
Application number
DE60042080T
Other languages
German (de)
English (en)
Inventor
Nicholas K Yu
Kenneth D Easton
Raghu Sankuratri
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.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Application granted granted Critical
Publication of DE60042080D1 publication Critical patent/DE60042080D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0261Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0287Power 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
    • H04W52/0293Power 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0261Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0287Power 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
    • H04W52/029Power 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing 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)
  • Circuits Of Receivers In General (AREA)
  • Electric Clocks (AREA)
  • Transceivers (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
DE60042080T 1999-11-04 2000-11-03 Verfahren und einrichtung zum wiederaufwecken einer mobilstation nach einer auszeit Expired - Lifetime DE60042080D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/434,869 US6735454B1 (en) 1999-11-04 1999-11-04 Method and apparatus for activating a high frequency clock following a sleep mode within a mobile station operating in a slotted paging mode
PCT/US2000/030387 WO2001033870A2 (en) 1999-11-04 2000-11-03 Method and apparatus for reactivating a mobile station following a sleep period

Publications (1)

Publication Number Publication Date
DE60042080D1 true DE60042080D1 (de) 2009-06-04

Family

ID=23726032

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60042080T Expired - Lifetime DE60042080D1 (de) 1999-11-04 2000-11-03 Verfahren und einrichtung zum wiederaufwecken einer mobilstation nach einer auszeit

Country Status (15)

Country Link
US (1) US6735454B1 (enExample)
EP (1) EP1228655B1 (enExample)
JP (1) JP4723146B2 (enExample)
KR (1) KR20020044588A (enExample)
CN (1) CN1451247A (enExample)
AT (1) ATE429794T1 (enExample)
AU (1) AU776533B2 (enExample)
BR (1) BR0015247A (enExample)
CA (1) CA2387676A1 (enExample)
DE (1) DE60042080D1 (enExample)
ES (1) ES2322792T3 (enExample)
IL (1) IL149333A0 (enExample)
MX (1) MXPA02004463A (enExample)
RU (1) RU2255432C2 (enExample)
WO (1) WO2001033870A2 (enExample)

Families Citing this family (89)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7106709B2 (en) * 2000-11-29 2006-09-12 Telefonaktiebologet Lm Ericsson (Publ) Timing drift compensation in wireless packet-based systems
KR100350474B1 (ko) * 2000-12-30 2002-08-29 삼성전자 주식회사 디지털 무선 통신 단말 시스템에서 대기시 적응적 전력소모 감소 방법
US7197096B2 (en) * 2001-06-08 2007-03-27 Broadcom Corporation Compensation of reference frequency drift in system requiring critical upstream timing
US7403507B2 (en) * 2001-06-18 2008-07-22 Texas Instruments Incorporated System and method for recovering system time in direct sequence spread spectrum communications
JP2003110484A (ja) * 2001-09-27 2003-04-11 Sony Corp 携帯通信端末、該携帯通信端末における通信方法、プログラムおよび該プログラムを記録した記録媒体
US8977284B2 (en) * 2001-10-04 2015-03-10 Traxcell Technologies, LLC Machine for providing a dynamic data base of geographic location information for a plurality of wireless devices and process for making same
FI116702B (fi) * 2001-12-20 2006-01-31 Nokia Corp Dynaaminen tehonsäätö integroiduissa piireissä
US6980823B2 (en) * 2002-01-31 2005-12-27 Qualcomm Inc. Intermediate wake mode to track sleep clock frequency in a wireless communication device
US6965763B2 (en) * 2002-02-11 2005-11-15 Motorola, Inc. Event coordination in an electronic device to reduce current drain
US6950684B2 (en) 2002-05-01 2005-09-27 Interdigital Technology Corporation Method and system for optimizing power resources in wireless devices
KR101061954B1 (ko) * 2002-05-06 2011-09-05 인터디지탈 테크날러지 코포레이션 배터리 수명을 연장시키기 위한 동기화 방법
KR100450507B1 (ko) * 2002-10-15 2004-10-01 주식회사 팬택 이동 통신용 실시간 클럭 타이밍 보정 장치
US6822973B2 (en) * 2003-02-18 2004-11-23 Motorola, Inc. Apparatus and method for implementing a reduced slotted mode in a communication system
US20040176147A1 (en) * 2003-03-06 2004-09-09 Wilberth Escalante Power conservation in a mobile communication device utilizing variable reacquisition time in a discontinuous reception regime
US20050096060A1 (en) * 2003-11-05 2005-05-05 Samsung Electronics Co., Ltd. Base station for controlling use of reduced slot cycle mode of operation in a wireless network
KR100594009B1 (ko) * 2003-09-26 2006-06-30 삼성전자주식회사 광대역 무선 접속 통신 시스템에서 슬립 구간 설정 방법
KR100686775B1 (ko) * 2003-11-07 2007-02-23 삼성전자주식회사 광대역 무선 접속 통신 시스템에서 트래픽 지시 메시지 전송 방법
US7197341B2 (en) 2003-12-22 2007-03-27 Interdigital Technology Corporation Precise sleep timer using a low-cost and low-accuracy clock
FR2864743B1 (fr) * 2003-12-24 2006-03-03 Sagem Procede de generation de base de temps dans un telephone mobile
EP2439990B1 (en) * 2004-03-04 2021-01-06 Samsung Electronics Co., Ltd. System and method for controlling an operational mode of a MAC layer in a broadband wireless access communication system
FI20040418A7 (fi) * 2004-03-18 2005-09-19 Nokia Corp Digitaalijärjestelmän kellokontrolli
US7783277B2 (en) * 2004-03-24 2010-08-24 Somfy Sas Low power rf control system
US20050221870A1 (en) * 2004-04-06 2005-10-06 Integration Associates Inc. Method and circuit for determining a slow clock calibration factor
US7496774B2 (en) * 2004-06-04 2009-02-24 Broadcom Corporation Method and system for generating clocks for standby mode operation in a mobile communication device
FR2874777B1 (fr) * 2004-09-02 2007-01-05 Sagem Telephone mobile et procede d'utilisation de ce telephone mobile
US20060056322A1 (en) * 2004-09-10 2006-03-16 Simpson Floyd D Method for updating a timer function in a mobile station in a wireless local area network
CN100405863C (zh) * 2005-03-23 2008-07-23 大唐移动通信设备有限公司 一种移动终端待机过程中校准睡眠处理器的方法
US7522941B2 (en) * 2005-05-23 2009-04-21 Broadcom Corporation Method and apparatus for reducing standby power consumption of a handheld communication system
US8385878B2 (en) * 2005-06-28 2013-02-26 Qualcomm Incorporated Systems, methods, and apparatus for activity control in a wireless communications device
US8027373B2 (en) * 2005-09-15 2011-09-27 Qualcomm Incorporated Quick detection of signaling in a wireless communication system
KR100691952B1 (ko) * 2005-12-09 2007-03-09 엘지전자 주식회사 액티베이션 타임 조절 기능이 구비된 제어국 장치 및 그액티베이션 타임 조절 방법
KR101194072B1 (ko) 2006-02-15 2012-10-24 삼성전자주식회사 비동기식 이동통신시스템에서 오프라인 페이징 지시자정보를 획득하는 장치 및 방법
US8346313B2 (en) * 2006-08-01 2013-01-01 Qualcomm Incorporated Dynamic warm-up time for a wireless device in idle mode
US7734264B2 (en) 2006-08-29 2010-06-08 Qualcomm Incorporated System frame number (SFN) evaluator
JP4869879B2 (ja) * 2006-11-20 2012-02-08 富士通セミコンダクター株式会社 半導体集積回路
US7730339B2 (en) * 2006-11-20 2010-06-01 Ricoh Company, Ltd. Remote wake-up from an energy-saving mode
US8031024B1 (en) 2008-02-28 2011-10-04 Marvell International Ltd. Temperature-corrected frequency control with crystal oscillators
US8451740B2 (en) * 2008-04-01 2013-05-28 Qualcomm Incorporated Compensating for drifts occurring during sleep times in access terminals
US9237523B2 (en) * 2008-07-07 2016-01-12 Mediatek Inc. Method of establishing sleep mode operation for broadband wireless communications systems
US8625572B2 (en) * 2008-12-19 2014-01-07 Nokia Corporation Synchronization indication in networks
US8258881B2 (en) * 2009-03-13 2012-09-04 Broadcom Corporation Method and system for drift reduction in a low power oscillator (LPO) utilized in a wireless communication device
US8644203B2 (en) 2009-04-27 2014-02-04 Dialog Semiconductor B.V. Method of and device for reduced power consumption in synchronized systems
US20100303185A1 (en) * 2009-06-02 2010-12-02 Jacobus Cornelis Haartsen Methods of Operating Wireless Communications Devices Including Detecting Times of Receipt of Packets and Related Devices
JP5463165B2 (ja) * 2010-02-26 2014-04-09 株式会社日立製作所 省電力化可能なponシステムにおける、onuのスリープ状態からの復旧方法
US8498240B2 (en) * 2010-11-11 2013-07-30 Mediatek Inc. Resynchronization method for recovering from sleep mode and apparatuses using the same
US8504889B2 (en) * 2010-11-12 2013-08-06 Qualcomm Incorporated Sleep clock error recovery scheme
GB2486880B (en) * 2010-12-22 2015-01-07 Toumaz Uk Ltd A TDMA-based communication method and system
US8731119B2 (en) * 2011-03-18 2014-05-20 Marvell World Trade Ltd. Apparatus and method for reducing receiver frequency errors
US9289422B2 (en) 2011-03-24 2016-03-22 Marvell World Trade Ltd. Initial acquisition using crystal oscillator
US8488506B2 (en) * 2011-06-28 2013-07-16 Qualcomm Incorporated Oscillator settling time allowance
US9226241B2 (en) * 2011-09-02 2015-12-29 Qualcomm Incorporated Systems and methods for low power medium access
US8552804B1 (en) * 2011-09-30 2013-10-08 Integrated Device Technology Inc. Frequency synthesizers with dynamic calibration intervals
GB2500563B (en) * 2012-01-23 2016-08-17 Nvidia Corp Timing calibration method and apparatus
US8943352B1 (en) 2012-05-07 2015-01-27 Dust Networks, Inc. Low power timing, configuring, and scheduling
CN103327587B (zh) * 2013-05-29 2016-12-07 北京创毅讯联科技股份有限公司 一种终端睡眠周期控制方法和装置
US9271171B1 (en) * 2013-06-10 2016-02-23 Google Inc. Transmitter and receiver tracking techniques for user devices in a MIMO network
CA2856027C (en) * 2014-03-18 2024-07-02 Smartrek Technologies Inc. MESH NETWORK SYSTEM AND TECHNIQUES
US9461684B2 (en) * 2014-07-17 2016-10-04 Qualcomm Incorporated Fast system recovery in multi-radio-access-technology devices
CN105703749B (zh) * 2014-11-24 2018-07-20 中国科学院沈阳自动化研究所 一种低功耗精确的休眠定时器电路及方法
JP2016115991A (ja) * 2014-12-11 2016-06-23 富士通株式会社 通信機、送受信システムおよび通信機の制御方法
US9872335B2 (en) 2015-03-06 2018-01-16 Marvell International Ltd. Iterative receiver wake-up for long DRX periods
US9483129B1 (en) 2015-05-12 2016-11-01 Atmel Corporation Active stylus with fractional clock-cycle timing
CN106304317B (zh) * 2015-06-24 2019-05-21 辰芯科技有限公司 睡眠唤醒定时偏差的补偿方法及电子设备
US10172092B1 (en) * 2015-07-24 2019-01-01 Marvell International Ltd. Systems and methods for providing a sleep clock on a wireless communications device
US10333525B1 (en) 2015-12-07 2019-06-25 Marvell International Ltd. Digitally-based temperature compensation for a crystal oscillator
KR102656697B1 (ko) * 2016-12-09 2024-04-12 에스케이하이닉스 주식회사 반도체장치
KR101939379B1 (ko) * 2017-05-24 2019-01-16 (주)에프씨아이 저 전력 모드를 구비한 무선통신 장치 및 방법
US10588087B2 (en) 2017-05-26 2020-03-10 Arm Limited Timer for low-power communications systems
US10788883B2 (en) 2017-05-26 2020-09-29 Arm Ltd Timer for low-power communications systems
CN109976501A (zh) * 2017-12-28 2019-07-05 中移物联网有限公司 一种低功耗控制方法、装置、系统及存储介质
CN109765985B (zh) * 2018-12-25 2022-11-22 赛特威尔电子股份有限公司 单片机间隙性工作控制方法、系统及装置
FR3094540B1 (fr) * 2019-03-27 2021-02-19 Continental Automotive Procédé de contrôle d’une activation d’une fonction par un module de commande d’une unité roue
CN110324810A (zh) * 2019-06-20 2019-10-11 上海华虹集成电路有限责任公司 一种低功耗蓝牙数据包扫描窗口自动调整的方法
CN110488911B (zh) * 2019-07-17 2023-04-28 晶晨半导体(上海)股份有限公司 数字频率生成器及其状态切换方法
FR3100628B1 (fr) * 2019-09-10 2023-04-14 St Microelectronics Grenoble 2 Communication par bus CAN
EP3866019B1 (en) * 2020-02-17 2025-01-01 STMicroelectronics (Grenoble 2) SAS Clock-error estimation for two-clock electronic device
CN111669812B (zh) * 2020-05-29 2023-03-21 上海橙群微电子有限公司 低功耗蓝牙芯片、设备及其休眠唤醒控制方法和通信系统
FR3116167B1 (fr) * 2020-11-12 2024-04-19 St Microelectronics Rousset Ajustement d’un instant d’activation d’un circuit
CN113038445B (zh) * 2021-03-26 2022-11-18 上海磐启微电子有限公司 一种蓝牙休眠时钟的校准方法
CN115344080A (zh) * 2021-05-14 2022-11-15 炬芯科技股份有限公司 计时方法、计时装置、计时系统、存储介质及电子设备
CN113392063B (zh) * 2021-06-11 2022-11-25 北京紫光展锐通信技术有限公司 时间同步方法、装置及系统
FR3124867B1 (fr) * 2021-06-30 2024-10-18 Stmicroelectronics Grand Ouest Sas Procédé de communication d’une base de temps de référence dans un microcontrôleur, et circuit intégré de microcontrôleur correspondant.
CN113645683B (zh) * 2021-10-14 2021-12-24 昂科信息技术(上海)股份有限公司 晶振自适应时钟同步方法及系统
CN114025421B (zh) * 2021-11-11 2024-04-26 中国电子科技集团公司第五十四研究所 天通卫星物联网终端低功耗唤醒时钟预补偿装置及方法
KR20230075767A (ko) * 2021-11-23 2023-05-31 (주)아이앤씨테크놀로지 무선 단말 장치의 웨이크업 시점 제어 장치 및 방법
CN114860323A (zh) * 2022-05-20 2022-08-05 重庆御芯微信息技术有限公司 一种低功耗精确定时唤醒方法和装置
CN115220527B (zh) * 2022-07-11 2025-07-29 乐鑫信息科技(上海)股份有限公司 用于高、低频时钟之间的同步方法
CN116546615B (zh) * 2023-07-07 2023-09-12 芯迈微半导体(上海)有限公司 一种长期演进终端在连接态下的重新同步方法、装置
CN117150988B (zh) * 2023-11-01 2024-04-02 成都北中网芯科技有限公司 一种验证环境的高精度时钟产生方法、装置、设备及介质

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5392287A (en) * 1992-03-05 1995-02-21 Qualcomm Incorporated Apparatus and method for reducing power consumption in a mobile communications receiver
DE4317143C2 (de) * 1993-05-24 1999-02-18 Deutsche Telekom Mobil Verfahren und Einrichtung zum Betrieb eines Mobilfunknetzes
JP2992670B2 (ja) * 1994-01-31 1999-12-20 松下電器産業株式会社 移動体通信装置
US5659881A (en) * 1994-03-11 1997-08-19 Ericsson Inc. Distributed method of call arbitration in an RF trunking multisite coordinator architecture
US5524009A (en) * 1995-06-07 1996-06-04 Nokia Mobile Phones Ltd. Fast AGC setting using RSS (I) measurement procedure
JP3555252B2 (ja) * 1995-06-30 2004-08-18 株式会社デンソー 間欠受信制御装置
GB2315194B (en) 1996-07-11 2000-11-15 Nokia Mobile Phones Ltd Method and apparatus for resynchronizing two system clocks
US5953648A (en) * 1996-08-13 1999-09-14 Qualcomm Incorporated System and method for estimating clock error in a remote communication device
GB2320398B (en) 1996-12-12 2001-11-14 Nec Technologies Time base alignment for digital mobile phones
JPH10190568A (ja) * 1996-12-27 1998-07-21 Matsushita Electric Ind Co Ltd 無線受信装置
US6016312A (en) 1997-02-28 2000-01-18 Motorola, Inc. Radiotelephone and method for clock calibration for slotted paging mode in a CDMA radiotelephone system
JPH10257004A (ja) * 1997-03-06 1998-09-25 Asahi Kasei Micro Syst Kk 通信装置
US5995820A (en) 1997-06-17 1999-11-30 Lsi Logic Corporation Apparatus and method for calibration of sleep mode clock in wireless communications mobile station
JP3179382B2 (ja) * 1997-08-27 2001-06-25 山形日本電気株式会社 Pll回路
EP0924947A1 (en) 1997-12-22 1999-06-23 The Technology Partnership Public Limited Company Power saving in a digital cellular system terminal
JP3555435B2 (ja) * 1998-03-31 2004-08-18 株式会社日立製作所 移動通信端末
US6333939B1 (en) 1998-08-14 2001-12-25 Qualcomm Incorporated Synchronization of a low power oscillator with a reference oscillator in a wireless communication device utilizing slotted paging
US6212398B1 (en) * 1998-12-03 2001-04-03 Ericsson Inc. Wireless telephone that rapidly reacquires a timing reference from a wireless network after a sleep mode
JP2000278752A (ja) * 1999-03-24 2000-10-06 Toshiba Corp 移動無線端末装置
JP3389140B2 (ja) * 1999-04-20 2003-03-24 エヌイーシーアクセステクニカ株式会社 間欠受信装置
JP2001053668A (ja) * 1999-08-06 2001-02-23 Denso Corp Phs通信装置

Also Published As

Publication number Publication date
EP1228655B1 (en) 2009-04-22
RU2002114547A (ru) 2004-03-27
CA2387676A1 (en) 2001-05-10
CN1451247A (zh) 2003-10-22
MXPA02004463A (es) 2002-10-23
EP1228655A2 (en) 2002-08-07
JP4723146B2 (ja) 2011-07-13
IL149333A0 (en) 2002-11-10
AU776533B2 (en) 2004-09-16
ES2322792T3 (es) 2009-06-29
JP2003527788A (ja) 2003-09-16
WO2001033870A3 (en) 2001-11-22
WO2001033870A2 (en) 2001-05-10
KR20020044588A (ko) 2002-06-15
ATE429794T1 (de) 2009-05-15
BR0015247A (pt) 2002-12-31
US6735454B1 (en) 2004-05-11
RU2255432C2 (ru) 2005-06-27
AU1756701A (en) 2001-05-14

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