GB2393610B - Mobile radio communications device and operating method - Google Patents
Mobile radio communications device and operating methodInfo
- 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
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)
- Telephone Function (AREA)
- Transceivers (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.
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)
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 |
GB2491001B (en) * | 2011-05-20 | 2013-05-08 | Renesas Mobile Corp | Method and apparatus for calibrating sleep clocks |
GB201108512D0 (en) | 2011-05-20 | 2011-07-06 | 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)
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 |
-
2002
- 2002-09-26 GB GB0222367A patent/GB2393610B/en not_active Expired - Fee Related
Patent Citations (2)
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 |