WO2007049203A2 - A method and a system for controlling a sleep mode of a device in a wireless communications network or in a mobile point-to-point connection - Google Patents
A method and a system for controlling a sleep mode of a device in a wireless communications network or in a mobile point-to-point connection Download PDFInfo
- Publication number
- WO2007049203A2 WO2007049203A2 PCT/IB2006/053867 IB2006053867W WO2007049203A2 WO 2007049203 A2 WO2007049203 A2 WO 2007049203A2 IB 2006053867 W IB2006053867 W IB 2006053867W WO 2007049203 A2 WO2007049203 A2 WO 2007049203A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sleep
- predetermined
- base band
- access control
- medium access
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004891 communication Methods 0.000 title claims abstract description 14
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 241001481828 Glyptocephalus cynoglossus Species 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- VJYFKVYYMZPMAB-UHFFFAOYSA-N ethoprophos Chemical compound CCCSP(=O)(OCC)SCCC VJYFKVYYMZPMAB-UHFFFAOYSA-N 0.000 description 1
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
- H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
- H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
- H04W52/0283—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks with sequential power up or power down of successive circuit blocks, e.g. switching on the local oscillator before RF or mixer stages
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
-
- 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
Definitions
- the present invention relates to a method and a system for controlling a sleep mode of a device in a wireless communications network or in a mobile point-to- point connection in order to turn off system components of the device, especially to turn off a medium access control, an radio frequency subsystem, a base band device, etc.
- the system clock is triggered by a system timer circuit which is part of the radio frequency subsystem. That means, the system timer circuit triggers the radio frequency subsystem as well as the medium access control.
- the system timer circuit normally runs with e.g. 66 MHz.
- the medium access control sets fast into the sleep mode.
- the lazy clock of the medium access control normally runs with e.g. 32 kHz. Consequently, the lazy clock could not be activated before the medium access control is already in the sleep mode. Hence, it could result in a loss of data.
- a method for controlling a sleep mode of a device in a wireless communications network or in a mobile point-to-point connection is provided in order to turn off system components of the device as claimed in claim 1.
- a system for controlling a sleep mode of a device in a wireless communications network or in a mobile point-to-point connection is provided in order to turn off system components of the device as claimed in claim 10.
- an extended physical layer for use in a wireless communications network or in a mobile point-to- point connection is provided in order to turn off system components of the device as claimed in claim 16.
- a BB-RF serial interface will not get started by a state machine of the base band anymore but exclusively by the BB-RF serial interface source register.
- a delay of the BB-RF serial interface must not be added to a transport of information. There is no data loss during the stepwise process to set the system components into the sleep state.
- the key aspect of the present invention is to build a system which guarantees a wake-up from sleep applicable in devices, such as a mobile phone, a mobile computer, a mobile digital camera, without data loss.
- a method for controlling the sleep mode of a device in a wireless communications network or in a mobile point-to-point connection in order to turn off system components of the device is suggested, wherein a predetermined first delay timer is additionally started to delay the setting of the sleep state for one of the system components.
- the information to enter the sleep mode is generated from an application module, connected to a medium access control (shortly called MAC), coupled to an extended physical layer (shortly called PHY), and is transferred from the medium access control to the extended physical layer.
- MAC medium access control
- PHY extended physical layer
- a sleep signal of a power management mode in the base band (also called BB) is generated to set one of the system components, e.g. the medium access control, the base band, the radio frequency subsystem (also called RF), into sleep state.
- the set sleep signal starts the predetermined first delay timer.
- the medium access control decides when the device or the system goes into sleep. During the process to go into sleep, different steps have to be processed for sending the device including its system components, such as a medium access control, the base band and the radio frequency subsystem, into sleep state.
- the medium access control While the medium access control is triggered from the radio frequency subsystem, the medium access control should be earlier set into the sleep mode than the physical layer. This ensures that no data loss will occur in the medium access control.
- the medium access control goes first into the sleep mode.
- the extended physical layer goes into the sleep mode after the expiration of the predetermined first delay timer. For this, a start-sleep signal is generated to set the sleep state of the extended physical layer and to stop a base band PLL, which generated the clock of the medium access control.
- a stop clock signal is generated to stop the system clock of the medium access control.
- a lazy clock of the medium access control is started to guarantee the recognition of a system wake-up call.
- the stopping of the system clock as well as the switch to the lazy clock is done after the expiration of the predetermined first delay timer.
- the first delay timer is individually set when booting up the device. For instance, the first delay time could be in a range from 0,05 ⁇ s to 5 ⁇ s.
- the single system components will be stepwise set into the sleep mode.
- the radio frequency subsystem reaches the sleep mode after the base band is in the sleep mode. Therefore, a power down signal will be asserted, which set the radio frequency subsystem into the sleep state after the expiration of the predetermined first delay timer for the base band and after the expiration to a predetermined second delay time.
- This predetermined second delay timer is started to delay the sleep state of the radio frequency subsystem. It is started by the start-sleep signal of the first delay timer after the expiration of the predetermined first delay time.
- the setting of the sleep state of the radio frequency subsystem and the stopping of a front-end PLL, which triggered the base band PLL of the base band is done after the expiration of the predetermined second delay time.
- Fig. 1 shows a block schematic diagram of the method for controlling a sleep mode of a device in order to turn off system components of the device.
- Fig. 2 shows a block schematic diagram of the architecture of the device with a medium access control, coupled via a base band to a radio frequency subsystem.
- the device may operate as a multi-mode communications device, e.g. as a UWB device.
- Figure 1 shows a block schematic diagram of the method for controlling a sleep mode of a device 1 in order to turn off a number of system components of the device 1.
- the device 1 sets a number of parameters during a boot up routine or during a reset routine.
- parameters for the algorithm of controlling the sleep mode of the device 1 are set during the boot routine or during the reset routine.
- a number of delay timers Tl, T2 are set as parameters.
- An application module of the device 1 asserts a sleep mode information to a control device, e.g. to a medium access control 2 of the device, (see S2) during the normal working cycle "ready" of the device, e.g. during transmitting or receiving (see S3).
- a first system component which is determined by the medium access control 2, runs into the sleep state. For instance, the medium access control 2 itself goes into the sleep mode at first.
- PLL phase locked loop circuit
- a first delay timer Tl is started in order to delay the setting of the sleep state of the second system component, e.g. of the base band 3, (see steps S5 and S6).
- a second delay timer T2 is started to delay the setting of the sleep state of a third system component; e.g. of an radio frequency subsystem 4, which synchronized the second system component, e.g. the base band 3 (see steps S7 and S8).
- the described routine to set a number of system components 2 to 4 of the device 1 into the sleep state with a predetermined delay time Tl and/or T2 is continued until all relevant system components 2 to 4 are in the sleep state.
- FIG. 2 shows a preferred embodiment of the present invention for a UWB transmitter as a device 1.
- the device 1 comprises a medium access control 2, which is coupled via a serial interface IFl with a base band 3.
- the base band 3 is coupled via a BB-RF serial interface IF2 with a radio frequency subsystem 4.
- the base band 3 is a digital base band integrated circuit (shortly called BB-IC).
- the medium access control 2 After reception of sleep mode information from an application module, e.g. a software application, of the device 1 the medium access control 2 decides when the device 1 goes into sleep.
- the steps, which have to be processed for sending the device 1 including the medium access control 2, the base band 3, integrated the base band controller 5, and the radio frequency subsystem 4 into sleep state are as follows:
- the following option could be implemented in the algorithm to control the sleep mode of the device 1 :
- the information that the radio frequency subsystem 4 should enter into the sleep state is not passed via the second interface IF2, e.g. the BB-RF serial interface, but by a separate wire IF3.
- the transferred signal "sleep" via the separate wire IF3 is delayed by the first delay timer Tl as described in step 3 of table 1.
- the delay of the second interface IF2 must not be added to transport of information.
- the sleep mode information " Sleep Adr” and "SleepData" will be saved in the register of the base band 3, in the so called vendor register.
- the steps, which have to be processed for exit the device 1 including the medium access control 2, the physical layer PHY, integrated the base band 3, the base band controller 5, and the radio frequency subsystem 4, from the sleep state are as follows:
- serial interface IFl is used for the communication between the medium access control 2 and the physical layer PHY, especially the base band 3.
- the BB-RF serial interface IF2 is used for the communication between the base band 3 and the radio frequency subsystem 4.
- a direct connection via a separate wire IF3 may replace the usage of the BB-RF serial interface IF2 when the base band 3 sends the sleep message to the radio frequency subsystem 4.
- the first delay timer Tl delays the event by a predetermined delay time “SleepDly” when the flag “SLEEP” in the power management mode “PMMode” is set. This should ensured that the medium access control 2 has enough time to go into the sleep state and switch to run on the lazy clock 10.
- a further delay timer T2 emulates the delay of a transfer operation via the second interface IF2, e.g. the BB-RF serial interface. After this second delay timer T2 assured that the last transferred bit left the base band 3 its output signal "sleep_gate” is used for the following two purposes. At first, it stops the generation of the internal base band PLL 7. At second, it asserts the power down state to the power unit 9. Hence, the signal "sleep_gate” should be active "Low”.
- the device 1 returns from sleep state when the signals "RX_EN” and "TX_EN” via the first interface IFl will be active simultaneously.
- a combinatorial logic detects this state and sets signal "TX_RX_S witch” via the second interface IF2 to "High". The same signal “TX_RX_S witch” turns on the power module 9 again. It has to be clearly designed, because the logic connection of the signal “TX_RX_Switch” is used during normal operation concurrently.
- the radio frequency subsystem 4 recognizes this signal
- TX_RX_Switch and turns on its PLL 8, which synchronized the base band PLL 7.
- the radio frequency subsystem 4 is also starting to run the reference clock 11 with 44 MHz.
- the base band PLL 7 then generates the 66 MHz internal clock, which synchronized the system clock with the signal "PCLK".
- the base band controller 5 recognizes the internal signal
- BB base band
- RF radio frequency subsystem
- MDI base band controller
- PLL 8 front-end PLL
- POW power module
- IFl first interface serial interface or MAC-PHY-interface
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Software Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Transceivers (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/091,072 US20090164821A1 (en) | 2005-10-28 | 2006-10-10 | Method and a system for controlling a sleep mode of a device in a wireless communications network or in a mobile point-to-point connection |
EP06809658A EP1943581A2 (en) | 2005-10-28 | 2006-10-20 | A method and a system for controlling a sleep mode of a device in a wireless communications network or in a mobile point-to-point connection |
JP2008537265A JP2009514308A (en) | 2005-10-28 | 2006-10-20 | Method and system for controlling sleep mode of device in wireless communication network or mobile point-to-point connection |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05110137 | 2005-10-28 | ||
EP05110137.6 | 2005-10-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2007049203A2 true WO2007049203A2 (en) | 2007-05-03 |
WO2007049203A3 WO2007049203A3 (en) | 2007-08-02 |
Family
ID=37708141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2006/053867 WO2007049203A2 (en) | 2005-10-28 | 2006-10-20 | A method and a system for controlling a sleep mode of a device in a wireless communications network or in a mobile point-to-point connection |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090164821A1 (en) |
EP (1) | EP1943581A2 (en) |
JP (1) | JP2009514308A (en) |
KR (1) | KR20080070697A (en) |
CN (1) | CN101297258A (en) |
WO (1) | WO2007049203A2 (en) |
Cited By (7)
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WO2009061880A3 (en) * | 2007-11-07 | 2009-07-09 | Intel Corp | Energy efficient ethernet using active/idle toggling |
US7777471B2 (en) | 2008-09-30 | 2010-08-17 | Telefonaktiebolaget Lm Ericsson (Publ) | Automated sleep sequence |
EP2234325A1 (en) * | 2009-03-25 | 2010-09-29 | Brother Kogyo Kabushiki Kaisha | Energy efficient network device |
EP2492777A1 (en) * | 2011-02-25 | 2012-08-29 | Telefonaktiebolaget L M Ericsson AB (Publ) | A method and communication device for reducing power consumption in chip-to-chip signalling |
US8898497B2 (en) | 2009-03-17 | 2014-11-25 | Aviad Wertheimer | Negotiating a transmit wake time |
USRE45600E1 (en) | 2007-09-17 | 2015-07-07 | Intel Corporation | Techniques for collaborative power management for heterogeneous networks |
US10291542B2 (en) | 2008-09-12 | 2019-05-14 | Intel Corporation | Generating, at least in part, and/or receiving, at least in part, at least one request |
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US8316252B2 (en) * | 2008-05-30 | 2012-11-20 | Advanced Micro Devices, Inc. | Distributed clock gating with centralized state machine control |
JP4754637B2 (en) * | 2009-03-24 | 2011-08-24 | 株式会社トヨタIt開発センター | Car radio |
CN101771755B (en) * | 2009-12-30 | 2014-08-13 | 重庆重邮信科通信技术有限公司 | Electricity-saving control device for baseband chip of mobile terminal |
US8671299B2 (en) * | 2011-05-26 | 2014-03-11 | Google Inc. | Delaying the initiation of transitioning to a lower power mode by placing a computer system into an intermediate power mode between a normal power mode and the lower power mode |
JP6000685B2 (en) * | 2012-06-25 | 2016-10-05 | 京セラ株式会社 | Communication terminal, communication control program, and communication control method |
US9280509B2 (en) * | 2012-06-29 | 2016-03-08 | Intel Corporation | Data interface sleep mode logic |
CN103809727B (en) * | 2012-11-14 | 2016-12-21 | 重庆重邮信科通信技术有限公司 | The power-saving processing method of a kind of mobile terminal, system and mobile terminal |
US9860804B2 (en) | 2013-11-11 | 2018-01-02 | Qualcomm Incorporated | Priority management of a measurement event timer and low-power period |
USRE49652E1 (en) | 2013-12-16 | 2023-09-12 | Qualcomm Incorporated | Power saving techniques in computing devices |
KR102161200B1 (en) * | 2014-04-21 | 2020-09-29 | 삼성전자주식회사 | Method for controlling a sleep mode and an electronic device thereof |
KR102530073B1 (en) | 2016-07-15 | 2023-05-08 | 삼성전자주식회사 | Baseband Integrated Circuit for communicating with RF Integrated Circuit using digital interface And Apparatus including the same |
US10798283B2 (en) * | 2017-11-21 | 2020-10-06 | Olympus Corporation | Information apparatus, control method, and computer readable recording medium determining state information of the information apparatus across a power switch and transmitting such state information to an external, portable information terminal |
CN108172204A (en) * | 2017-12-19 | 2018-06-15 | 得理电子(上海)有限公司 | A kind of radio data transmission method and system, electronic musical instrument and intelligent terminal |
JP7203582B2 (en) * | 2018-11-30 | 2023-01-13 | 株式会社デンソーテン | Information processing equipment |
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2006
- 2006-10-10 US US12/091,072 patent/US20090164821A1/en not_active Abandoned
- 2006-10-20 JP JP2008537265A patent/JP2009514308A/en not_active Withdrawn
- 2006-10-20 WO PCT/IB2006/053867 patent/WO2007049203A2/en active Application Filing
- 2006-10-20 EP EP06809658A patent/EP1943581A2/en not_active Withdrawn
- 2006-10-20 CN CNA2006800400794A patent/CN101297258A/en active Pending
- 2006-10-20 KR KR1020087012621A patent/KR20080070697A/en not_active Application Discontinuation
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Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
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USRE45600E1 (en) | 2007-09-17 | 2015-07-07 | Intel Corporation | Techniques for collaborative power management for heterogeneous networks |
US8839015B2 (en) | 2007-11-07 | 2014-09-16 | Intel Corporation | Systems and methods for reducing power consumption of a communication device |
WO2009061880A3 (en) * | 2007-11-07 | 2009-07-09 | Intel Corp | Energy efficient ethernet using active/idle toggling |
US9489033B2 (en) | 2007-11-07 | 2016-11-08 | Intel Corporation | Systems and methods for reducing power consumption of a communication device |
US8312307B2 (en) | 2007-11-07 | 2012-11-13 | Intel Corporation | Systems and methods for reducing power consumption during communication between link partners |
US11570123B2 (en) | 2008-09-12 | 2023-01-31 | Intel Corporation | Generating, at least in part, and/or receiving, at least in part, at least one request |
US10291542B2 (en) | 2008-09-12 | 2019-05-14 | Intel Corporation | Generating, at least in part, and/or receiving, at least in part, at least one request |
US7777471B2 (en) | 2008-09-30 | 2010-08-17 | Telefonaktiebolaget Lm Ericsson (Publ) | Automated sleep sequence |
US10386908B2 (en) | 2009-03-17 | 2019-08-20 | Intel Corporation | Negotiating a transmit wake time |
US8898497B2 (en) | 2009-03-17 | 2014-11-25 | Aviad Wertheimer | Negotiating a transmit wake time |
US10860079B2 (en) | 2009-03-17 | 2020-12-08 | Intel Corporation | Negotiating a transmit wake time |
US11340681B2 (en) | 2009-03-17 | 2022-05-24 | Intel Corporation | Negotiating a transmit wake time |
US11656671B2 (en) | 2009-03-17 | 2023-05-23 | Intel Corporation | Negotiating a transmit wake time |
EP2568659A1 (en) * | 2009-03-25 | 2013-03-13 | Brother Kogyo Kabushiki Kaisha | Network device |
US8942152B2 (en) | 2009-03-25 | 2015-01-27 | Brother Kogyo Kabushiki Kaisha | Network device |
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WO2012113702A1 (en) * | 2011-02-25 | 2012-08-30 | Telefonaktiebolaget L M Ericsson (Publ) | A method and a communication device for reducing power consumption in chip-to-chip signalling |
EP2492777A1 (en) * | 2011-02-25 | 2012-08-29 | Telefonaktiebolaget L M Ericsson AB (Publ) | A method and communication device for reducing power consumption in chip-to-chip signalling |
Also Published As
Publication number | Publication date |
---|---|
CN101297258A (en) | 2008-10-29 |
KR20080070697A (en) | 2008-07-30 |
US20090164821A1 (en) | 2009-06-25 |
JP2009514308A (en) | 2009-04-02 |
EP1943581A2 (en) | 2008-07-16 |
WO2007049203A3 (en) | 2007-08-02 |
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