CN100341262C - Non-continuous demodulation realizing method for power saving at mobile terminal - Google Patents
Non-continuous demodulation realizing method for power saving at mobile terminal Download PDFInfo
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- CN100341262C CN100341262C CNB021179727A CN02117972A CN100341262C CN 100341262 C CN100341262 C CN 100341262C CN B021179727 A CNB021179727 A CN B021179727A CN 02117972 A CN02117972 A CN 02117972A CN 100341262 C CN100341262 C CN 100341262C
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- 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
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Abstract
The present invention relates to a discontinuous demodulation realizing method for saving power at a mobile terminal. In view of two update mechanisms of the present system information block (SIB) defined by 3GPP, the two update mechanisms are respectively processed to save the consumption of batteries of user equipment (UE). The present invention comprises that after UE is turned on, demodulation comprising SIB primary common control physical channels (PCCPCH) is continuously received; a radio resource control module (RRC) informs a physical layer (PHY) to stop demodulating PCCPCH wireless frames corresponding to SIB during the time period from the finish of reception to the indication of the update of information, the SIB of is slowly changed and is on the basis of an update mechanism indicated by a value tag, and the operation is in a discontinuous demodulation state; the RRC motors each of update periods of SIB in real time, the SIB is quickly changed and is on the basis of the periodical update mechanism of a timer, and the operation is in a continuous demodulation state. The discontinuous demodulation of the PCCPCH is realized by transmitting corresponding control commands such as primitives to the PHY through the RRC, and the demodulation is only carried out in the time needing reception; furthermore, the consumption of the batteries of the UE is greatly saved.
Description
Technical field
The present invention relates to third generation wireless communication system (3G) technology, specifically relate to the Radio Resource control module (RRC) of terminal equipment (UE) side, reception to the basic public physic channel (PCCPCH) of physical layer (PHY) is controlled, and then realizes the method for its discontinuous demodulation mechanism.
Background technology
System message (common control information) is not the information specific to certain UE, and is meant the common information of certain sub-district or whole RNS (RNS).System message has many, all passes through broadcast channel broadcasts.During broadcasting, system message is divided into System information block SIB (systeminformation blocks) by characteristic, each SIB comprises the system information of same characteristic, mainly comprised the timer sum counter that UE needs as SIB1 under idle pulley or connection mode, different SIB has different characteristics, condition when reading them as speed or UE etc.
The method of UE reading system broadcast is: read main message blocks MIB (masterinformation blocks) earlier, again by analyzing each contained in MIB SIB and the schedule information of Scheduling Block SB (SchedulerBlock), determine when UE should go to read to remove demodulation, decoding broadcast channel in other words.
Each SIB repeats on broadcast channel, UE there is no need repeatedly to read them, after UE runs through a needed System information block SIB, just do not need to read broadcast channel more in theory and (BCH), promptly RRC can stop to receive broadcast channel.But when certain or when all SIB changes, UE just must read the fresh information of being broadcasted.
Organize among the technical specification TS 25.211 that 3GPP works out about the mapping (Physical channels andmapping of transport channels onto physical channels) of the physical channel of frequency division multiplexing (FDD) and transmission channel in third generation partner plan to physical channel, about the mapping of the physical channel of time division multiplexing (TDD) and transmission channel to physical channel, and TS 25.331 Radio Resources control association road (PCCPCH) and second public physic channel (SCCPCH).PCCPCH channel wherein is a down physical channel under the fixed rate, is used to carry broadcast channel BCH.Regulation has the discontinuous reception mechanism (DRX) of SCCPCH channel under PICH cooperates in this technical specification, to save the battery consumption of UE.
Yet, whether can adopt discontinuous reception mechanism (DRX) not stipulate for the PCCPCH channel in this technical specification.
Therefore, under normal conditions, the PCCPCH channel is at IDLE (idle pulley, only in core net, register), be designed to receive continuously under the CELL_PCH (in Access Network, registering), URA_PCH states such as (in Access Network, registering), cause UE can consume the more energy because of continuous reception to the PCCPCH channel.
On the other hand, also stipulate in the prior art standard: the information of PCCPCH channel is carried out demodulation by the UE physical layer, only need to obtain system frame number SFN (number of one from 0 to 4095 circulation), data after other demodulation then being given the Radio Resource control module (RRC) on UE upper strata handles, the Radio Resource control module (RRC) on upper strata only need be read wherein entrained system information block (SIB) from the data after this demodulation content, as information such as configuration, measurement controls, and in view of the above physical layer and other parts are controlled.
Also stipulate in the prior art standard: the various SIB that transmitted by the PCCPCH channel belong to two kinds of update mechanisms respectively, a kind of mechanism that periodically updates that is based on timer, promptly upgrade once at regular intervals, the SIB that belongs to this class update mechanism has parameter value variation characteristics faster, but quantity and content are less; Another kind is based on the update mechanism of label VALUE_TAG indication, promptly when the pairing VALUE_TAG value of a certain system information block (SIB) changes, illustrate that variation has taken place the pairing system information of this SIB, usually the SIB that belongs to this class update mechanism, have the slower characteristics of parameter value variation, but quantity and content are more.
Summary of the invention
The objective of the invention is to design a kind of discontinuous demodulation implementation method that makes electricity saving of mobile terminal, by realizing the discontinuous reception to the PCCPCH channel, the energy resource consumption of effectively saving terminal equipment (UE).
Design consideration of the present invention is: by system information periodically as can be known, in case receive based on the SIB of the update mechanism of label VALUE_TAG indication, can stop demodulation before it upgrades.Just upgrade comparatively fast, need real time monitoring based on the SIB of timer update mechanism, but because of the SIB quantity and the content of timer update mechanism all less, can special processing, to obtain better efficient.
The technical scheme that realizes the object of the invention is such: a kind of discontinuous demodulation implementation method that makes electricity saving of mobile terminal, after terminal equipment (UE) start, the continuous basic public physic channel of receiving demodulation (PCCPCH), comprise main message blocks (MIB) and other System information block that need receive (SIB), it is characterized in that also comprising:
A. to System information block (SIB) based on the update mechanism of label (VALUE_TAG) indication, between the time period that the information that receives the described System information block of label (VALUE_TAG) indication to described System information block takes place to upgrade, stop corresponding basic public physic channel (PCCPCH) radio frames of described System information block (SIB) is carried out demodulation, work in discontinuous demodulation state;
B. to System information block (SIB), its each update cycle is carried out real time monitoring, demodulation based on the timer cycle update mechanism.
In the described steps A, control to discontinuous demodulation state, be that terminal equipment (UE) internal interface that optimization is set between described physical layer (PHY) and Radio Resource control module (RRC) is realized, comprise that transmission is used to start basic public physic channel (PCCPCH) and enters the primitive of discontinuous demodulation state, with transmission be used to stop basic public physic channel (PCCPCH) discontinuous demodulation state, transfer the primitive of continuous demodulation state to, primitive is handed down to physical layer (PHY) by Radio Resource control module (RRC).
Technological thought of the present invention is: the system information for the treatment of two class different update mechanism respectively.Continuous demodulation PCCPCH when initial, after the SIB of index tab VALUE_TAG update mechanism received by the time, only the SIB of remaining timer update mechanism changed the discontinuous demodulation state of PCCPCH over to.
System information block (SIB) demodulation to the timer update mechanism comprises: in each segmentation list placement of the System information block (SIB) of timer update mechanism, physical layer starts basic public physic channel (PCCPCH) demodulation in advance by the lead frame number; With each segmentation list placement at the System information block (SIB) of timer update mechanism, the frame number that physical layer needs by the System information block (SIB) of the intact timer update mechanism of demodulation is after the frame number of the described needs that lag behind, stop the demodulation to basic public physic channel (PCCPCH) radio frames.
The present invention is by suitably optimizing the internal interface between terminal equipment (UE) Radio Resource control module (RRC) and the physical layer (PHY), reception to basic public physic channel (PCCPCH) is controlled, and can treat the system information of two class different update mechanism respectively.
The inventive method is under IDLE, the CELL_PCH of terminal equipment (UE), URA_PCH state, by adopting the discontinuous demodulate reception mechanism of PCCPCH, changing based on the SIB of VALUE_TAG update mechanism when not being very frequent, make the basic public physic channel (PCCPCH) of terminal equipment (UE) in the most of the time, be in discontinuous demodulation state, thereby can save the battery consumption of terminal equipment (UE) greatly.
Description of drawings
Fig. 1 is in discontinuous demodulating process of the present invention, determines the position view of System information block (SIB) the start and stop demodulation of timer update mechanism.
Embodiment
Further specify technical scheme of the present invention below in conjunction with example and accompanying drawing.
After terminal equipment (UE) start, because any system information all is new concerning UE, therefore UE receives main message blocks (MIB) and other System information blocks that need receive (SIB), this moment is to basic public physic channel (PCCPCH) demodulation continuously, physical layer (PHY) is given Radio Resource control module (RRC) with data and is handled, and this process is identical with the prior art standard.
The present invention has utilized the various SIB that transmit on PCCPCH to belong to the characteristics of two kinds of update mechanisms respectively, after SIB based on the update mechanism of label VALUE_TAG indication received, indicate before the information of this SIB has renewal at the VALUE_TAG that finds certain SIB, physical layer stops the PCCPCH radio frames demodulation to these SIB correspondences; To SIB based on the timer cycle update mechanism, all carry out real time monitoring in its each update cycle, and consider the SIB quantity and all less characteristics of content of timer update mechanism, it is done special processing.
RRC handles the data that physical layer obtains, the SIB that identifies all VALUE_TAG mechanism receives, current when only needing SIB to the timer update mechanism to upgrade, RRC is by issuing scheduling message to physical layer, the notice physical layer changes the discontinuous demodulation of PCCPCH over to, and each parameter of notice physical layer timer update mechanism.
For realizing the control to the physical layer action, the present invention has increased the RRC of optimization and the UE internal interface between the physical layer newly, comprises and adopts two primitive scheduling message.
Article one, primitive is CPHY-DISCONT-DEM-START, is handed down to physical layer by RRC, starts the discontinuous demodulation of PCCPCH channel, and its primitive parameter comprises synchronous lead, SIB number, update cycle REP, segmentation number and list of locations.
Wherein, synchronously lead is used to start the discontinuous timing of separating of PCCPCH and need shifts to an earlier date several frames to be used for physical layer system frame number (SFN) synchronous, and default value is 4.
The SIB number is generally 1, and expression only has the SIB of a timer update mechanism, monitors the SIB of a plurality of timer update mechanisms if the SIB number, then shows needs greater than 1.
Cycle REP then is the SIB-REP of timer update mechanism SIB correspondence; The segmentation number refers to that this timer update mechanism SIB is divided into several sections; List of locations then is the concrete position of each segmentation in this one-period.
As in the discontinuous demodulation that enters PCCPCH during period, physical layer according to this interface parameters can determine in SFN mod cycle REP=position [0] (perhaps position [1], position [2] ...) time, start the frame number that demodulation PCCPCH need shift to an earlier date, a transmission block TB needs 2 frames as the intact broadcast channel of demodulation, be in SFN mod cycle REP=position [0]+2 (perhaps position [1]+2, position [2]+2 ...) stop demodulation (when decision stops demodulation PCCPCH); Need a SFN timing synchronization procedure that shifts to an earlier date with the demodulation of considering UE side physical layer PCCPCH, to guarantee the stability of demodulation, for each segmentation that need receive, the moment of above-mentioned startup demodulation PCCPCH should shift to an earlier date several frames than SIB segmentation position, and this lead just is handed down to physical layer in primitive CPHY-DISCONT-DEM-START.
Another primitive is CPHY-DISCONT-DEM-STOP, is handed down to physical layer by RRC, is used to stop the discontinuous demodulation of PCCPCH and changes continuous demodulation over to, and this primitive does not need any parameter.
Therefore, in case UE monitors the SIB of label VALUE_TAG indication update mechanism when changing, then send primitive CPHY-DISCONT-DEM-STOP to physical layer by RRC, the control physical layer changes the continuous demodulation of PCCPCH over to, receive until the SIB (VALUE_TAG update mechanism) that changes, RRC sends primitive CPHY-DISCONT-DEM-START to physical layer once more, and the control physical layer changes the discontinuous demodulation of PCCPCH over to.
Referring to Fig. 1, discontinuous demodulation case signal in one-period.
Stipulate in the 3GPP agreement that System information block SIB7 is the SIB of a timer update mechanism.
Suppose only to have the SIB of this timer update mechanism of SIB7, its schedule information is: update cycle SIB_REP=256, the physical frame number SIB_COUNT=2 that this SIB is shared, the position SIB_POS[0 of first transmission block of this SIB]=26 (by stipulating in the agreement), the position SIB_POS[1 of second transmission block of this SIB]=58 (by stipulating in the agreement).After the SIB of all VALUE_TAG update mechanisms receives, RRC promptly sends primitive CPHY-DISCONT-DEM-START by the interface with physical layer to physical layer, this primitive corresponding parameters: the SIB number is 1, cycle REP is 256, and the segmentation number is 2, segmentation list placement [0] is 26, segmentation list placement [1] is 58 (lead defaults to 4 synchronously).
Realize the discontinuous demodulation of PCCPCH in physical layer.Concrete operations are as follows:
On time shaft, mark each frame among the figure: 0,22,26,28,54,58,60,256.Physical layer starts PCCPCH demodulation (4 frames are to obtain synchronously in advance) when SFNmod 256=22 (shifting to an earlier date 4 frames on position [0] basic 26 frames), original position as figure center 11, (the intact transmission block TB of demodulation needs 2 frames at SFN mod 128=28, position [0]+2) stops PCCPCH demodulation (having received first transmission block of SIB7) time, as the end position of figure center 12.Among the figure, frame 12,14 expression timer update mechanism SIB7 segmentations need the SFN (26 to 28 liang of frames, 58 to 60 liang of frames) of demodulation, the synchronous lead (22 to 26 4 frames, 54 to 58 4 frames) of the synchronous SFN of frame 11,13 expressions, remainder is the transmission part of non-timed device update mechanism SIB.
Physical layer starts PCCPCH demodulation (4 frames are to obtain synchronously in advance) when SFN mod 256=54 (position [1]), original position as figure center 13, (the intact transmission block TB of demodulation needs 2 frames at SFN mod 128=60, position [1]+2) stops PCCPCH demodulation (having received second transmission block of SIB7) time, as the end position of figure center 14.
Fig. 1 has only described the situation of a update cycle, and in each update cycle, its demodulation case is just the same.
As can be seen from Figure, under discontinuous demodulation state of the present invention, only arranged in the time 12/256 (being about 5%), UE is in active state (timer update mechanism).Generally, UE mostly is in the state that the SIB of VALUE_TAG update mechanism has received.
Can know that by above-mentioned example changing based on the SIB of VALUE_TAG update mechanism when not being very frequent, this method makes the PCCPCH most of the time of UE be in discontinuous demodulation state, thereby can save the UE battery consumption greatly.
When system information was upgraded, RRC need notify physical layer to change continuous demodulation over to, so that receive the SIB based on the VALUE_TAG new mechanism.Change discontinuous demodulation after receiving once more over to.
The present invention is directed to two kinds of update mechanisms of the system information block SIB of present 3GPP definition, label VALUE_TAG indication update mechanism and timer cycle update mechanism are handled respectively.Continuous demodulation PCCPCH when initial; By the time after the SIB of index VALUE_TAG update mechanism receives, only need to receive the SIB (as SIB7, SIB9, SIB10, SIB14, SIB19) of timer update mechanism, send corresponding control command by RRC to PHY, change the discontinuous demodulation state of PCCPCH over to, promptly only when needs receive, engrave demodulation, and then save the battery consumption of UE greatly.The present invention by optimization is set RRC and the UE internal interface between the physical layer, to carry out the control of PCCPCH demodulation.And for the timer cycle update mechanism under the discontinuous demodulation state, adopt and reach the scheme of delaying several frames in advance, can give one synchronous period of physical layer.
The inventive method empirical tests approximately can be saved 70% power consumption under the IDLE state.
Claims (7)
1. discontinuous demodulation implementation method that makes electricity saving of mobile terminal, after terminal equipment (UE) start, the basic public physic channel of receiving demodulation (PCCPCH) comprises main message blocks (MIB) and other System information block that need receive (SIB) continuously, it is characterized in that also comprising:
A. to System information block (SIB) based on the update mechanism of label (VALUE_TAG) indication, between the time period that the information that receives the described System information block of label (VALUE_TAG) indication to described System information block takes place to upgrade, stop corresponding basic public physic channel (PCCPCH) radio frames of described System information block (SIB) is carried out demodulation, work in discontinuous demodulation state;
B. to System information block (SIB), its each update cycle is carried out real time monitoring, demodulation based on the timer cycle update mechanism.
2. a kind of discontinuous demodulation implementation method that makes electricity saving of mobile terminal according to claim 1, it is characterized in that: in the described steps A, control to discontinuous demodulation state, be that terminal equipment (UE) internal interface that optimization is set between physical layer (PHY) and Radio Resource control module (RRC) is realized, comprise that transmission is used to start basic public physic channel (PCCPCH) and enters the primitive of discontinuous demodulation state, be used to stop the discontinuous demodulation state of basic public physic channel (PCCPCH) with transmission, the primitive that transfers continuous demodulation state to, primitive is handed down to physical layer (PHY) by Radio Resource control module (RRC).
3. a kind of discontinuous demodulation implementation method that makes electricity saving of mobile terminal according to claim 2, it is characterized in that: describedly be used for starting the parameter that basic public physic channel (PCCPCH) enters the primitive of discontinuous demodulation state, comprise: synchronous lead, be when being used to start basic public physic channel (PCCPCH) and entering discontinuous demodulation state, physical layer obtains System Frame Number (SFN) and is used for synchronously needed frame number in advance; System information block (SIB) number is System information block (SIB) number that needs the timer update mechanism of supervision; Update cycle (REP) is the update cycle (REP) of the System information block (SIB) of timer update mechanism; The segmentation number is the hop count that the System information block (SIB) of timer update mechanism is divided; And list of locations, be each segmentation of the System information block (SIB) of timer update mechanism, the position in the corresponding update cycle.
4. a kind of discontinuous demodulation implementation method that makes electricity saving of mobile terminal according to claim 2, it is characterized in that: the described discontinuous demodulation state that is used to stop basic public physic channel (PCCPCH), transfer the primitive of continuous demodulation state to, do not contain any parameter.
5. a kind of discontinuous demodulation implementation method that makes electricity saving of mobile terminal according to claim 1 is characterized in that described steps A further comprises following process:
A1. Radio Resource control module (RRC) is handled the reception data of physical layer (PHY), and index goes out all System information blocks (SIB) based on the update mechanism of label (VALUE_TAG) indication and receives;
A2. Radio Resource control module (RRC) sends to physical layer (PHY) and is used to start basic public physic channel (PCCPCH) and enters the primitive of discontinuous demodulation state, the notice physical layer changes the discontinuous demodulation operating state of basic public physic channel (PCCPCH) over to, only needs System information block (SIB) demodulation to the timer update mechanism;
A3. terminal equipment (UE) monitoring when this indicating status changes, starts basic public physic channel (PCCPCH) demodulation based on the indicating status of label (VALUE_TAG) update mechanism, returns steps A 1 and carries out.
6. a kind of discontinuous demodulation implementation method that makes electricity saving of mobile terminal according to claim 5, it is characterized in that in the described steps A 2, System information block (SIB) demodulation to the timer update mechanism, comprise: in each segmentation list placement of the System information block (SIB) of timer update mechanism, physical layer starts basic public physic channel (PCCPCH) demodulation in advance by the lead frame number; With each segmentation list placement at the System information block (SIB) of timer update mechanism, the frame number that physical layer needs by the System information block (SIB) of the intact timer update mechanism of demodulation is after the frame number of the described needs that lag behind, stop the demodulation to basic public physic channel (PCCPCH) radio frames.
7. a kind of discontinuous demodulation implementation method that makes electricity saving of mobile terminal according to claim 6, it is characterized in that: the frame number of the intact transmission block needs of the segmentation list placement of the System information block of described timer update mechanism (SIB), lead frame number and demodulation provides in the described primitive that enters discontinuous demodulation state.
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| CN1642047B (en) * | 2004-01-09 | 2010-08-25 | 佛山市顺德区顺达电脑厂有限公司 | Configuration for detecting radiofrequency module working state and its method |
| KR100622875B1 (en) * | 2004-10-27 | 2006-09-19 | 엘지전자 주식회사 | Mobile Communication Terminal for improving of Standby Time and Method thereof |
| CN100397934C (en) * | 2005-12-08 | 2008-06-25 | 展讯通信（上海）有限公司 | Method for detecting message block of null seeking channel in GSM system |
| EP1969737B1 (en) | 2005-12-19 | 2014-03-26 | LG Electronics Inc. | Method for reading dynamic system information blocks |
| US8185726B2 (en) * | 2006-04-27 | 2012-05-22 | Qualcomm Incorporated | Sleep optimization based on system information block scheduling |
| CN100466849C (en) * | 2006-06-15 | 2009-03-04 | 华为技术有限公司 | Method and system for controlling user terminal to read system message |
| CN101212799B (en) * | 2006-12-29 | 2011-02-02 | 华为技术有限公司 | Method for indicating system message changes, method and device for obtaining system message |
| CN101217778B (en) * | 2007-01-05 | 2012-04-04 | 电信科学技术研究院 | A systematic message updating method and its implementation device |
| CN101459935B (en) * | 2007-12-11 | 2011-01-19 | 中兴通讯股份有限公司 | System message updating method |
| CN101232737B (en) * | 2008-02-28 | 2011-06-01 | 北京天碁科技有限公司 | Method for terminal to read broadcasting channel and terminal thereof |
| CN101784009B (en) * | 2009-01-16 | 2013-05-22 | 联芯科技有限公司 | Power-saving terminal and power-saving method thereof |
| CN101697614B (en) * | 2009-10-23 | 2014-12-10 | 中兴通讯股份有限公司 | Method and device for processing dynamic system message block |
| CN102123375B (en) | 2010-01-11 | 2014-04-02 | 华为终端有限公司 | Mobility management method, GPRS (general packet radio service) support node or mobility management entity and terminal |
| CN103179644B (en) * | 2011-12-21 | 2016-03-30 | 华为技术有限公司 | A kind of method of read system message, equipment |
| CN102547936A (en) | 2011-12-23 | 2012-07-04 | 华为终端有限公司 | Energy-saving method, energy-saving device and communication terminal |
| CN112088548A (en) * | 2018-05-09 | 2020-12-15 | 索尼公司 | Early enablement of discontinuous reception |
| CN113709768B (en) * | 2020-05-22 | 2023-09-22 | 华为技术有限公司 | Communication method and related device |
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