WO2008018328A1 - Terminal de communication sans fil, son processeur et procédé de gestion d'énergie de terminal de communication sans fil - Google Patents
Terminal de communication sans fil, son processeur et procédé de gestion d'énergie de terminal de communication sans fil Download PDFInfo
- Publication number
- WO2008018328A1 WO2008018328A1 PCT/JP2007/065015 JP2007065015W WO2008018328A1 WO 2008018328 A1 WO2008018328 A1 WO 2008018328A1 JP 2007065015 W JP2007065015 W JP 2007065015W WO 2008018328 A1 WO2008018328 A1 WO 2008018328A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- communication
- processor
- power saving
- control function
- wireless communication
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/22—Negotiating communication rate
-
- 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
-
- 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
- Wireless communication terminal processor for the same, and power management method for wireless communication terminal
- the present invention relates to a wireless communication terminal, a processor thereof, and a power management method of the wireless communication terminal, and more particularly, wireless communication having a power saving control function (a noise management function) for shifting to a low power consumption state under a predetermined condition.
- the present invention relates to a power management method for a terminal, its processor, and a wireless communication terminal.
- a power saving control function for shifting to a low power consumption state under a predetermined condition is widely adopted.
- a portable communication terminal equipped with a plurality of processors has an application control CPU (ACPU) that mainly performs application management control in a low power state when data processing is not performed. (Power saving mode), and when data communication is not being performed, it is described that the communication control CPU (CCPU) that mainly performs management control of communication functions is set to the low power state (power saving mode)! /, (0 006 paragraph).
- ACPU application control CPU
- Patent Document 1 Japanese Unexamined Patent Publication No. 2005-142981
- Patent Document 2 Japanese Unexamined Patent Publication No. 2006-72991
- Patent Documents 1 and 2 described above are incorporated herein by reference.
- HSDPA High Speed Downlink Packet Acces
- DPCH method using individual channel
- HSUPA High Speed Uplink Packet Access
- FIG. 8 is a diagram showing the generation status of an interrupt command in a mobile phone terminal compatible with HSDPA.
- HSDPA High Speed Downlink Packet Access
- the frequency of shifting to the low power state (power saving mode) described above is low! If there is no! /, And the system shifts to the power saving mode under certain circumstances, various monitoring (judgment) processing for setting the power saving mode is required, and overhead for returning to the normal mode is generated as described above. In addition, there is a problem that the processing is further delayed.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to impair the performance during high-speed communication and to provide a wireless with a power saving control function.
- an object of the present invention is to impair the performance during high-speed communication and to provide a wireless with a power saving control function.
- a wireless communication unit capable of communicating with a processor having a power saving control function for reducing an operation clock under a predetermined condition at a high or low data communication rate.
- the power saving control function of the processor is turned off (to the low clock side of the operation clock).
- a wireless communication terminal that prohibits switching is provided (form 1).
- a wireless communication terminal including a wireless communication unit capable of communication at a high-speed or low-speed data communication rate, and reduces an operation clock under a predetermined condition.
- a processor for a wireless communication terminal having a power saving control function, wherein when the communication is performed at the data communication rate on the high speed side, the power saving control function of the processor is turned off (low operation clock is reduced).
- a wireless communication unit capable of communicating with a processor having a power saving control function for reducing an operation clock under a predetermined condition at a high or low data communication rate.
- a power management method in a wireless communication terminal comprising: the processor confirms a data communication rate of the wireless communication unit, and the wireless communication unit communicates at a high-speed data communication rate;
- the processor is provided with a power management method for a wireless communication terminal for turning off the power saving control function.
- FIG. 1 is a logical block diagram showing a configuration of a mobile phone according to a first exemplary embodiment of the present invention.
- 2 A diagram showing the priorities of tasks executed by the ACPU 30 of the mobile phone according to the first example of the present invention.
- FIG. 3 A diagram showing a processing flow executed in the IDLE task of the mobile phone according to the first example of the present invention.
- FIG. 4 A diagram for explaining a specific operation of the mobile phone according to the first example of the present invention.
- FIG. 5 A diagram for explaining a specific operation of the mobile phone according to the second example of the present invention.
- FIG. 6 A diagram for explaining a specific operation of the mobile phone according to the second example of the present invention.
- FIG. 7 is a diagram for explaining problems of the prior art.
- FIG. 8 is a diagram for explaining problems of the prior art.
- a communication processor that performs communication processing at the high-speed or low-speed data communication rate, and an application execution processor that executes a task for data received or transmitted via the communication processor.
- the power saving control function is realized by shifting to the power saving mode for reducing the application execution processor power S and the operation clock when there is no task to be executed in the application execution processor.
- the application execution processor inhibits transition to the power saving mode when the communication processor communicates at the high-speed data communication rate (mode 2).
- HSDPA High Speed Downlink Packet Access
- HSUPA High Speed Uplink Packet Access
- the power saving control function is turned off at the start of communication, and then the power saving control function is turned on when communication at the low-speed data communication rate is started (mode 5).
- the power saving control function is on / off controlled by rewriting a status flag for controlling the processor (mode 7).
- FIG. 1 is a logical block diagram showing the configuration of the mobile phone according to the first exemplary embodiment of the present invention.
- the CCPU that mainly controls the communication system and functions as a communication control unit A (Communication-CPU) 10, an ACPU (Application CPU) 30 that performs various processes other than communication and mainly functions as an application control unit, and a logical bus 20 that connects them are shown.
- the memory device and the external interface are omitted from the clock switching unit.
- the CCPU 10 is connected to the antenna 10a and performs a protocol.layer 1 L1 processing unit
- protocol 'L2 processing unit 14 that performs layer 2 processing'
- protocol 'stack 16 corresponding to various communication standards including HSDPA and R99 (Release99 W-CDMA)'
- system monitoring unit 18 Has been.
- the ACPU 30 includes a packet processing unit 32, an audio processing unit 34, a video processing unit 36, a system monitoring unit 38, and the like that perform various processes using data received from the CCPU 10 via the logical bus 20.
- FIG. 2 is a diagram showing the priority order of tasks executed by the ACPU 30.
- the ACPU 30 executes the task based on the priority given to each task.
- the IDLE task at the bottom is a task that is executed when there is no other task to be executed, and the power saving control described later is executed in this task.
- Fig. 3 shows the processing flow executed in the IDLE task. Referring to FIG. 3, first, with reference to the status flag 38a in the system monitoring unit 38 of the ACPU, it is determined whether or not HSDP A communication is being performed (step S001).
- step S001 If it is determined in step S001 that HSDPA communication is being performed, the normal mode (operation clock: high) is maintained, and the operation clock switching operation is not performed (step S005). Therefore, during HSDPA communication, when a task occurs, the task is executed immediately without causing a clock switching overhead.
- step S001 determines whether there is an active device driver (step S002), and the active device driver is determined. If there is a device driver, the normal mode (operation clock: high) is maintained for the operation of the device, and the operation clock is not switched! /, (Step S005).
- step S003 A clock switching process is performed (step S003), and a transition to the power saving mode is performed (step S004).
- FIG. 4 shows the case where the mobile phone is in the HSD PA area at the start of packet communication and then leaves the HSDPA area due to handover.
- the protocol stack 16 of the CCPU 10 detects an HSDPA area, it sends a channel establishment (OPEN) to the ACPU 30 side via the logical bus 20.
- OPEN channel establishment
- channel release (CLOSE) is sent from protocol 'stack 16 of CCPU 10.
- CLO SE channel release
- the second embodiment of the present invention in which operational changes are made to the first embodiment is added. explain about.
- a slight delay force S is generated after the packet connection request until the status flag 38a in the system monitoring unit 38 becomes “1”. Therefore, in this embodiment, the status flag 38a in the system monitoring unit 38 is set to “1” simultaneously with the packet connection request, and the transition to the power saving mode is prohibited as an initial state.
- Fig. 5 shows the case where the mobile phone is in the HSDPA area at the start of packet communication and then leaves the HSDPA area due to handover, as in Fig. 4. Comparing Fig. 5 and Fig. 4, the start point of the power-saving mode transition prohibition control is advanced and the switching of the operation clock to the low speed side is prohibited from the beginning of packet communication.
- FIG. 6 shows the case where the mobile phone is outside the HSDPA area at the start of packet communication and then enters the HSDPA area by handover after the start of packet communication. In this case as well, switching to the low speed side of the operating clock is prohibited from the beginning of packet communication, but as soon as a report (CLOSE) is received from the protocol stack 16 indicating that it is outside the HSDPA area, the transition to the power saving mode is made. Is now allowed.
- CLOSE report
- the power described in the embodiment of the present invention turns off the power saving function when the communication method with the higher data communication rate among the plurality of communication methods is selected, and reduces the clock of the operation clock. If it is prohibited to switch to the side, it will not deviate from the gist of the present invention, and various modifications can be made within the scope.
- the example applied to an HSDPA-compatible mobile phone has been described.
- the present invention is not limited to HSDPA communication, and other existing wireless packet communication methods, H SUPA, high-speed wireless LAN, etc.
- This function can also be applied to various wireless communication terminals such as PDAs and personal computers that have multi-mode communication functions and power-saving control functions by reducing the operating clock. It is possible to realize it as a regret!
- the force described with reference to the example using the H SDPA area detection time and the packet connection start time as the starting point for prohibiting the transition to the power saving mode in the above range.
- an arbitrary timing such as a predetermined time after the packet connection request can be set as the starting point of the power-saving mode transition prohibition control.
- the state flag 38a may be used to directly update the control flag of the existing operation mode in addition to the power described as controlling the operation mode of the mobile phone.
- the state flag 38a may be used to directly update the control flag of the existing operation mode in addition to the power described as controlling the operation mode of the mobile phone.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephone Function (AREA)
- Transceivers (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008528787A JP5077233B2 (ja) | 2006-08-11 | 2007-07-31 | 無線通信端末、そのプロセッサ及び無線通信端末のパワーマネジメント方法 |
US12/375,665 US8971972B2 (en) | 2006-08-11 | 2007-07-31 | Power savings mode management of wireless communication terminal based on data communication rate |
EP07791699A EP2059012A4 (en) | 2006-08-11 | 2007-07-31 | WIRELESS COMMUNICATION TERMINAL, PROCESSOR, AND POWER MANAGEMENT METHOD OF WIRELESS COMMUNICATION TERMINAL |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-220060 | 2006-08-11 | ||
JP2006220060 | 2006-08-11 |
Publications (1)
Publication Number | Publication Date |
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WO2008018328A1 true WO2008018328A1 (fr) | 2008-02-14 |
Family
ID=39032862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/065015 WO2008018328A1 (fr) | 2006-08-11 | 2007-07-31 | Terminal de communication sans fil, son processeur et procédé de gestion d'énergie de terminal de communication sans fil |
Country Status (5)
Country | Link |
---|---|
US (1) | US8971972B2 (ja) |
EP (1) | EP2059012A4 (ja) |
JP (1) | JP5077233B2 (ja) |
CN (1) | CN101502085A (ja) |
WO (1) | WO2008018328A1 (ja) |
Cited By (4)
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CN101888400A (zh) * | 2009-05-11 | 2010-11-17 | 佳能株式会社 | 数据通信设备及其控制方法 |
JP2013033557A (ja) * | 2008-12-31 | 2013-02-14 | Intel Corp | 場所に基づくデータにより更なる安全性をプラットフォームに提供するシステム及び方法 |
JP2015521824A (ja) * | 2012-06-29 | 2015-07-30 | トムソン ライセンシングThomson Licensing | Wlanアクセスポイントのための低電力消費モード |
JP2016502705A (ja) * | 2012-10-25 | 2016-01-28 | クアルコム,インコーポレイテッド | ポータブルコンピューティングデバイスにおける割込み待ち時間閾値およびプロセッサをサポートするリソースの動的な調整 |
Families Citing this family (5)
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US8185678B1 (en) * | 2009-06-19 | 2012-05-22 | Xilinx, Inc. | Method and apparatus for controlling a data bus |
JP5495822B2 (ja) * | 2010-01-29 | 2014-05-21 | キヤノン株式会社 | 情報処理装置、その制御方法及びプログラム |
JP5939890B2 (ja) * | 2012-05-30 | 2016-06-22 | キヤノン株式会社 | 情報処理装置、情報処理装置の制御方法及びプログラム |
US8861416B2 (en) | 2012-06-14 | 2014-10-14 | Qualcomm Incorporated | Power savings for inter-radio access technology measurement |
US20150355942A1 (en) * | 2014-06-04 | 2015-12-10 | Texas Instruments Incorporated | Energy-efficient real-time task scheduler |
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- 2007-07-31 JP JP2008528787A patent/JP5077233B2/ja not_active Expired - Fee Related
- 2007-07-31 EP EP07791699A patent/EP2059012A4/en not_active Withdrawn
- 2007-07-31 US US12/375,665 patent/US8971972B2/en not_active Expired - Fee Related
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JP2016502705A (ja) * | 2012-10-25 | 2016-01-28 | クアルコム,インコーポレイテッド | ポータブルコンピューティングデバイスにおける割込み待ち時間閾値およびプロセッサをサポートするリソースの動的な調整 |
Also Published As
Publication number | Publication date |
---|---|
EP2059012A1 (en) | 2009-05-13 |
CN101502085A (zh) | 2009-08-05 |
US20090291713A1 (en) | 2009-11-26 |
JP5077233B2 (ja) | 2012-11-21 |
EP2059012A4 (en) | 2010-01-06 |
JPWO2008018328A1 (ja) | 2009-12-24 |
US8971972B2 (en) | 2015-03-03 |
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