CN101083815B - Method and apparatus for realizing mobile terminal clock relation track - Google Patents
Method and apparatus for realizing mobile terminal clock relation track Download PDFInfo
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- CN101083815B CN101083815B CN2007101185077A CN200710118507A CN101083815B CN 101083815 B CN101083815 B CN 101083815B CN 2007101185077 A CN2007101185077 A CN 2007101185077A CN 200710118507 A CN200710118507 A CN 200710118507A CN 101083815 B CN101083815 B CN 101083815B
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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
Abstract
The present invention provides a method and device that realize mobile terminal clock relations tracking. in the waiting period mobile terminals, in every paragraph into the sleep time into the activation time, the implementation of synchronous timing deviation measurement process. In this activation time, mobile terminal use the deviation of measured results of timing synchronization to adjust the current clock relationship, and apply this adjusted clock relationship in the next sleep time. Application of the technical program of this invention, power consumption in the process of clock relations tracking can be further saved ,so as to achieve the purpose of further energy saving, standby time increasing.
Description
Technical field
The present invention relates to wireless communication technology field, be meant a kind of method and apparatus of realizing mobile terminal clock relation track especially.
Background technology
The stand-by time of portable terminal is to weigh the key index of its performance, so power conservation techniques becomes a key technology of portable terminal.Usually, discontinuous receiving cycle (DRX at portable terminal, Discontinuous Reception), when being in the length of one's sleep during section, the high frequency clock that uses when using a low-frequency clock to replace work, can effectively reduce the electric quantity consumption of portable terminal, this low-frequency clock that just requires to use can reach the counting precision of high frequency clock, the timing of portable terminal can keep synchronously with the communication network end signal after the length of one's sleep, section finished, thereby avoid network loss to cause called failure, perhaps active call failure etc.; And since the frequency stability of low-frequency clock crystal oscillator well below the frequency stability of the crystal oscillator of employed high frequency clock, therefore in order to keep the consistent of timing relationship between low-frequency clock and the high frequency clock, need calibrate by calibration process.
In the prior art, if portable terminal has detected the inaccurate factor of timing relationship that can make between low-frequency clock and the high frequency clock, the variations in temperature that for example detects portable terminal has reached predetermined numerical value, perhaps the deviation of the operating frequency of clock has reached certain numerical value or the like, then can triggering mobile terminals initiate the clock relation track process, as shown in Figure 1, sequential chart among the figure has been described the mobile terminal activity indication from top to bottom successively, high frequency clock, the sequential of low-frequency clock, in this clock relation track process, obtain up-to-date timing relationship by triggering calibration process, because above-mentioned clock relation track process of carrying out may continue long time T, T=2 second for example, even this time T has comprised several DRX cycles as shown in FIG., and high frequency clock can not be closed in this tracing process, therefore portable terminal does not reach the power saving purpose, the yet corresponding shortening of its stand-by time.
Summary of the invention
The purpose of this invention is to provide a kind of method and apparatus of realizing mobile terminal clock relation track, it is undesirable to be used for solving prior art electricity saving of mobile terminal effect, problems such as stand-by time is short, therefore the invention provides a kind of method that realizes mobile terminal clock relation track, portable terminal is during standby, each time after the length of one's sleep, section entered the activationary time section, carry out the process that the synchronization timing deviation is measured; In this activationary time section, the result that portable terminal is measured this synchronization timing deviation is used to adjust current timing relationship, and adjusted this timing relationship was used in the section in the next length of one's sleep.
In the said method, wherein, described portable terminal carries out the process that at least twice described synchronization timing deviation is measured in same activationary time section, and calculates final synchronization timing deflection measurements according to the synchronization timing deflection measurements and the predetermined policy of each time.
In the said method, wherein, portable terminal is in the process of carrying out described synchronization timing deviation measurement, and portable terminal contains the data of synchrodata from the packet receiving of communication network termination, and carries out the related operation that described synchronization timing deviation is measured; If being the synchronization timing deviation of being scheduled to, this correlations computing that portable terminal carries out measures the last of related operation number of times, then calculate final described synchronization timing deflection measurements, measure otherwise portable terminal carries out described synchronization timing deviation once more according to described predetermined policy.
In the said method, wherein, portable terminal carries out the related operation of twice described synchronization timing deviation measurement, then describedly calculate final synchronization timing deflection measurements and comprise: the result's who measures when the synchronization timing deviation of twice correlation peak difference is in predetermined chip threshold value, think that then the result of twice described measurement has validity, The ultimate results is got the average of twice measurement result; When the result's of described measurement difference not in predetermined chip threshold value, a predetermined thresholding then is set, further comprise following three kinds of situations: situation one: if the result of twice described measurement all greater than this thresholding, then described The ultimate results is got the average of two times result; Situation two: if only once the result of described measurement is greater than this thresholding, described The ultimate results is got the synchronization timing deviate of this measurement result correspondence; Situation three: if the result of twice described measurement all less than this thresholding, described The ultimate results is 0.
In the said method, wherein, described final synchronization timing deflection measurements difference, then after obtaining this final synchronization timing deflection measurements, the different timing relationship adjustment of corresponding execution, comprise: the absolute value of described final synchronization timing deflection measurements is less than or equal to low digital sheet, does not then adjust timing relationship; The absolute value of described final synchronization timing deflection measurements is greater than low digital sheet and less than the digital sheet of height, and then timing relationship increases or reduce adjustment amount Delta1; The absolute value of described final synchronization timing deflection measurements is greater than the digital sheet of height, and then the timing relationship adjustment amount that increases or reduce is 2*Delta1.
In the said method, wherein, described adjustment amount Delta1=1/65536=0.0000152587890625.
In the said method, wherein, described corresponding the execution after the different timing relationship adjustment stored adjusted this timing relationship; And the process of adjusting described timing relationship is only carried out once in same activationary time section.
In the said method, wherein, described portable terminal comprises global mobile telecommunication system at least, and time division synchronization and code division multi-address access terminal, wireless code division multiple address access terminal, code division multiple access inserts 2000 terminals.
In the said method, wherein, described portable terminal contains the data of synchrodata from the packet receiving of described communication network termination at descending pilot frequency time slot in the TDD-LCR system.
In the said method, wherein, described timing relationship is the low-frequency clock that uses in the portable terminal and as with reference to the relation between the high frequency clock of clock.
A kind of device of realizing mobile terminal clock relation track comprises: a synchronization timing deviation measuring unit is used to calculate the result that the synchronization timing deviation is measured; A timing relationship alignment unit is used for adjusting timing relationship according to the result that the described synchronization timing deviation of calculating is measured.
In the said apparatus, wherein, described synchronization timing deviation measuring unit obtains the synchronizing code of this portable terminal, and the synchrodata that this synchronizing code and this portable terminal receive is carried out related operation, calculates effectively first correlation peak; The synchrodata positional information of the expectation of this portable terminal from the data that the communication network termination is received, this measuring unit are carried out related operation with the synchrodata positional information of this first correlation peak and this expectation and are obtained the result that described synchronization timing deviation is measured.
In the said apparatus, wherein, described synchronization timing deviation measuring unit is measured the result of two groups of described related operations, and use following strategy to obtain the result that final synchronization timing deviation is measured: the result's who measures when twice described synchronization timing deviation difference is in predetermined chip threshold value, then the result of twice described measurement is effective, and final synchronization timing deflection measurements is got the result's of twice described measurement average; When the result's of twice described measurement difference not in predetermined chip threshold value, a predetermined thresholding then is set, and further comprise following three kinds of situations: if the result of twice described measurement of situation A. all greater than this thresholding, described final synchronization timing deflection measurements is got the average of two times result; If only once the result of described measurement is greater than this thresholding for situation B., described final synchronization timing deflection measurements is got the synchronization timing deviate of this measurement result correspondence; If the result of twice described measurement of situation C. is less than this thresholding, described final synchronization timing deflection measurements is 0.
In the said apparatus, wherein, described timing relationship alignment unit is adjusted timing relationship according to following strategy: the absolute value of described final synchronization timing deflection measurements is less than or equal to low digital sheet, does not then adjust timing relationship; The absolute value of described final synchronization timing deflection measurements is greater than low digital sheet and less than the digital sheet of height, and then timing relationship increases or reduce adjustment amount Delta1; This adjustment amount Delta1=1/65536=0.0000152587890625; The absolute value of described final synchronization timing deflection measurements is greater than the digital sheet of height, and then the timing relationship adjustment amount that increases or reduce is Delta2=2*Delta1.
In the said apparatus, wherein, described timing relationship alignment unit reads after the current timing relationship, judges that further described final synchronization timing deflection measurements is on the occasion of still being negative value; If described final synchronization timing deflection measurements be on the occasion of, current timing relationship increases an adjustment amount Delta1 or Delta2; If described final synchronization timing deflection measurements is a negative value, current timing relationship reduces an adjustment amount Delta1 or Delta2.
Use above-mentioned technology of the present invention, carry out the synchronization timing deviation in the activationary time section of each DRX cycle and measure; And in this activationary time section, the result that portable terminal is measured this synchronization timing deviation is used to adjust current timing relationship, and should adjusted timing relationship use in the section in the next length of one's sleep, therefore can further save the electrical source consumption that brings in the clock relation track process, thereby reach further power saving, increase the purpose of stand-by time.
Description of drawings
Schematic diagram when Fig. 1 carries out clock relation track for portable terminal in the prior art;
Fig. 2 is the schematic diagram of embodiment of the invention portable terminal in the activity of discontinuous reception period;
Fig. 3 is the frame structure schematic diagram of the communication network end signal of low spreading rate synchronous time division sign indicating number subsystem (TDD-LCR) in the embodiment of the invention;
Fig. 4 is for obtaining the synchronization timing deviation concise and to the point schematic flow sheet that the row clock relation adjusts of going forward side by side in the embodiment of the invention;
Fig. 5 obtains the schematic flow sheet of synchronization timing deviation for portable terminal in the embodiment of the invention;
Fig. 6 carries out the schematic flow sheet that timing relationship is adjusted for portable terminal in the embodiment of the invention uses predetermined policy.
Embodiment
For making purpose of the present invention, technical scheme and implementation result clearer, below in conjunction with the accompanying drawings and the specific embodiments technical scheme of the present invention is described in detail.
As shown in Figure 2, portable terminal comprises two states in discontinuous receiving cycle DRX, i.e. state of activation, sleep state, and the shared time period of these two states can be distinguished called after activationary time section, length of one's sleep section.When portable terminal is in the length of one's sleep during section, portable terminal is closed high frequency clock, reaches the power saving purpose and use low-frequency clock to count; When arriving next activationary time section, portable terminal is according to the number of low-frequency clock counting, and the conversion of the timing relationship between low-frequency clock and the high frequency clock obtains a frame number, this frame number is exactly to use high frequency clock to count the sleep frame number that institute should obtain in above-mentioned length of one's sleep in the section, and portable terminal recovers high frequency clock and counts in the activationary time section.Portable terminal is realized as the technical scheme of above-mentioned description is in order to reach purpose of power saving, but because the frequency stability of low-frequency clock crystal oscillator is well below the frequency stability of employed high frequency clock crystal oscillator, for example low spreading rate synchronous time division sign indicating number subsystem (TDD-LCR, Time Division Duplex-Low Chip Rate) in the portable terminal, high frequency clock is the reference clock of 13M hertz, and low-frequency clock has only the 32K hertz usually, therefore convert obtain the length of one's sleep section the inevitable frame number that uses high frequency clock to obtain with reality of frame number have certain deviation, this just requires between low-frequency clock and the high frequency clock to keep consistent between low-frequency clock and the high frequency clock by a time tracking process.
In the practical project practice, above-mentioned deviation is mainly produced by following Several Factors:
(1) portable terminal is in the process of applied clock relation, and itself there is calibration error in applied timing relationship, promptly in length of one's sleep last time section, has used inaccurate timing relationship to count, thereby has caused synchronization timing to produce deviation; For example the conversion relation between the counting of low-frequency clock and high frequency clock should be the frame number that the frame number of a low-frequency clock should be equivalent to 312.5 high frequency clocks, but has in fact but adopted the conversion relation that produces than 311.5 frame numbers of large deviation;
(2) drift of portable terminal temperature has caused timing relationship more and more inaccurate, promptly in length of one's sleep last time section, because the portable terminal variation of temperature has caused the timing relationship of original employing no longer suitable, thereby caused the deviation of synchronization timing;
(3) motion of portable terminal has caused having the Doppler frequency deviation between carrier frequency and the network wireless signal(-) carrier frequency, and the accumulation benefit along with this Doppler frequency deviation has caused the synchronization timing deviation;
(4) the main footpath of network wireless signal changes, and deviation has taken place the timing position that has caused measuring, thereby causes the synchronization timing deviation.
The above-mentioned reason of just having described common several generation deviations owing to the complexity of whole communication network, can not be got rid of the reason of the various generation synchronization timing deviations that have other.
Communication network allows that the scope of the synchronization timing deviation of generation can be according to the disposal ability of portable terminal, the length of one's sleep, the factors such as length of section were determined, for example in the TDD-LCR system, can define each sleep and get up back synchronization timing deviation in 8 chip range, if communication network allows certainly, 16 chips then, perhaps 32 chips etc. all are fine.Refer again to shown in Figure 2, in the activationary time section, portable terminal just gets up from the sleep state of last time, at first carry out the processing of synchronization timing with the network wireless signal, obtain the synchronism deviation between this time section length of one's sleep portable terminal and network wireless signal, and by adjust reach gradually and the network wireless signal between precise synchronization, wherein the required precision of synchronization timing is the requirement of data demodulates ability, can reach 1/8 chip precision as requiring portable terminal in the TDD-LCR system.
The purpose that portable terminal carries out above-mentioned synchronization timing deviation processing is in order to adjust timing relationship, and its concise and to the point flow process has mainly comprised two big main steps as shown in Figure 4, and promptly portable terminal at first carries out the processing of synchronization timing deviation, obtains current timing offset; Secondly, the result who utilizes the above-mentioned final synchronization timing deviation of obtaining is as input, utilizes timing relationship to calculate the adjusted timing relationship of portable terminal, and this adjusted timing relationship is used for next time the section length of one's sleep.Wherein how specifically to calculate final synchronization timing deviation the result flow process as shown in Figure 5:
In related operation, at first calculate effectively first correlation peak, and write down the corresponding positional information of this first correlation peak, this first correlation peak is the positional information of calculating according to the portable terminal timing relationship that section adopts in the length of one's sleep, because this timing relationship may be inaccurate, so this positional information also may be an inaccurate positional information; The synchrodata positional information that the while portable terminal can obtain expecting from the data that the communication network termination is received, the synchrodata positional information of this expectation is correct positional information, above-mentioned two positional informations is compared just obtain the synchronization timing deflection measurements.
If step 503. has preestablished the calibration process that portable terminal need carry out twice synchronization timing deviation, then portable terminal judges whether the current related operation of just having finished is for the second time, if change step 504, otherwise change step 502.
Why to carry out the calibration process of twice synchronization timing in embodiments of the present invention; be because the possible decline of wireless signal of communication network end; cause the calibration process of the synchronization timing of portable terminal and communication network end failure may occur; therefore usually also need to carry out related operation repeatedly; portable terminal has carried out related operation twice in same activationary time section, obtain two groups relevant peaks peak value and synchronization timing deflection measurements thereof.Because can estimate the time that the calibration process of a synchronization timing needs in advance, the time span of an activationary time section is fixed simultaneously, so portable terminal can carry out twice or twice above calibration process.
When the difference of the synchronization timing deflection measurements of twice relevant peaks peak value in D1 chip of chip threshold value, think that then this measurement result of twice all has validity, final synchronization timing deflection measurements can be got the average of twice measurement result; Described D1 is a predefined value, for example D1=1 chip;
When the difference of the synchronization timing deflection measurements of twice relevant peaks peak value not in D1 chip, then can be divided into following several situation discussion:
(1) if twice relevant peaks peak value all greater than a predetermined thresholding Thr, Thr=5dB for example, then final synchronization timing deflection measurements can be got the average of two times result;
(2) if having only 1 time relevant peaks peak value greater than a predetermined thresholding Thr, final synchronization timing deflection measurements can be got the synchronization timing deviate of this relevant peaks peak value correspondence;
(3) if twice relevant peaks peak value all less than a predetermined thresholding Thr, can think that then final synchronization timing deflection measurements is 0, promptly no longer needs to adjust timing relationship.
By the final synchronization timing deflection measurements that above-mentioned strategy obtains, be used for ensuing timing relationship and handle.
The timing relationship handling process is that parameter is adjusted timing relationship with the synchronization timing deflection measurements that obtains above as shown in Figure 6, and its concrete steps are as follows, and wherein the synchronization timing deflection measurements abbreviates the synchronization timing deviation as;
The value of wherein said C1 can preestablish, for example the C1=1 chip.
This moment, the absolute value of synchronization timing deviation was less than or equal to high digital sheet C2 chip simultaneously greater than the C1 chip, and the value of wherein said C2 can preestablish, for example the C2=2 chip.
When above-mentioned absolute value when the synchronization timing deviation was got critical value, its subsequent treatment can be arbitrarily, and present embodiment has just provided a kind of situation.
That adopt in the embodiment of the invention is Delta1=1/65536=0.0000152587890625, the value of Delta1 can be a value that sets in advance, getting this value Delta1 in the present embodiment is for when original timing relationship is calibrated, and makes things convenient for Computing, accelerates arithmetic speed.
The value of this Delta2 can be a value that sets in advance, and getting this value in the present embodiment is for when original timing relationship is calibrated equally, makes things convenient for Computing.
Be without loss of generality, in the present embodiment, the correct positional information that sends signal with the communication network end if then the synchronization timing deviation is changeed step 608 for negative, otherwise is changeed step 609 as with reference to amount, and the value of adjustment amount is by obtaining in step 604 or the step 605.
By above description as can be seen, present embodiment has only carried out reducing an adjustment amount or increasing the adjustment of an adjustment amount only once to timing relationship in step 608 and step 609, this be because,
(1) common, cause timing relationship no longer accurately Several Factors unlikely concentrate and run at same sleep cycle, therefore the deviation that causes is not too large repeatedly adjusts to needs;
(2) because the numeric ratio of adjustment amount Delta1 or Delta2 is less, therefore can guarantee that each only the adjustment can make adjusted timing relationship more accurate, and the timing relationship after can not causing owing to the numerical value of adjustment amount Delta1 or Delta2 is excessive adjusting becomes than more inaccurate before adjusting;
(3) present embodiment adopts described method of adjustment, even current activationary time section does not reach desirable effect, also can adjust timing relationship once more in next activationary time section.
Timing relationship behind step 610. storage update in ensuing length of one's sleep of section, is used this timing relationship and is counted.
What need further specify is, above-mentioned steps 501～step 504, and step 601～step 611 is all finished in same activationary time section.
Use the method that the present invention proposes, the invention allows for a kind of device of realizing mobile terminal clock relation track, this device comprises: a synchronization timing deviation measuring unit, a timing relationship alignment unit.
This synchronization timing deviation measuring unit is used to calculate the result that the synchronization timing deviation is measured.The synchronization timing deviation measuring unit that is positioned at portable terminal obtains the synchronizing code of this machine storage, and the synchrodata that this synchronizing code and portable terminal receive is carried out related operation; In related operation, at first calculate effectively first correlation peak, and writing down the corresponding positional information of this first correlation peak, this first correlation peak is the positional information of calculating according to the portable terminal timing relationship that section adopts in the length of one's sleep; The synchrodata positional information that the while portable terminal can obtain expecting from the data that network terminal receives, the synchrodata positional information of this expectation is correct positional information, and this synchronization timing deviation measuring unit compares above-mentioned two positional informations and just obtains the synchronization timing deflection measurements.
Carry out the strategy that twice synchronization timing deviation measured if portable terminal has adopted, then can be still use following strategy to carry out reprocessing to twice related operation result by this synchronization timing deviation measuring unit;
When the difference of the synchronization timing deflection measurements of twice relevant peaks peak value in chip threshold value D1 chip, think that then this measurement result of twice all has validity, final synchronization timing deflection measurements can be got the average of twice measurement result; Described D1 is a predefined value, for example D1=1 chip;
When the difference of the synchronization timing deflection measurements of twice correlation peak not in the D1 chip, then can be divided into following several situation discussion:
(1) if twice relevant peaks peak value all greater than a predetermined thresholding Thr, Thr=5dB for example, then final synchronization timing deflection measurements can be got the average of two times result;
(2) if having only 1 time relevant peaks peak value greater than a predetermined thresholding Thr, final synchronization timing deflection measurements can be got the synchronization timing deviate of this relevant peaks peak value correspondence;
(3) if twice relevant peaks peak value all less than a predetermined thresholding Thr, can think that then final synchronization timing deflection measurements is 0, does not promptly adjust timing relationship.
This timing relationship alignment unit is used for calculating adjusted timing relationship according to the final synchronization timing deviation of calculating, and should adjusted timing relationship be used for the next one section length of one's sleep.The adjustment strategy of its foundation is as follows:
The absolute value of synchronization timing deviation is less than or equal to low digital sheet C1, does not then adjust timing relationship;
The absolute value of synchronization timing deviation is during greater than low digital sheet C1 and less than the digital sheet C2 of height, and then timing relationship increases or reduce adjustment amount Delta1; Adjustment amount Delta1=1/65536=0.0000152587890625 wherein;
The absolute value of synchronization timing deviation is during greater than the digital sheet C2 of height, and then the timing relationship adjustment amount that increases or reduce can be Delta2=2*Delta1.
This timing relationship alignment unit reads current timing relationship then, and this timing relationship is the timing relationship that portable terminal adopted in the section in the length of one's sleep that has just finished, and judges that the synchronization timing deviation is on the occasion of still being negative value;
Be without loss of generality, in the present embodiment, the tram information that sends signal with the communication network end is as the reference amount, if then the synchronization timing deviation is for negative, the signal of expression portable terminal timing ratio received communication network terminal is delayed, and that is to say that signal is than current timing advance; Reduce adjustment amount of current timing relationship;
If synchronization timing deviation result represents that for just the signal of portable terminal timing ratio received communication network terminal shifts to an earlier date, just the signal of communication network end falls behind than current timing, increases adjustment amount Delta1 of current timing relationship or Delta2.
Use the technical scheme of the invention described above, needn't be for another example consume the long time like that and carry out the tracking of timing relationship with prior art.Owing to be in the activationary time section of each DRX cycle, to carry out the synchronization timing deviation to measure; And in this activationary time section, the result that portable terminal is measured this synchronization timing deviation is used to adjust current timing relationship, and should adjusted timing relationship use in the section in the next length of one's sleep, therefore can further save the electrical source consumption that brings in the clock relation track process, thereby reach further power saving purpose, and method and apparatus of the present invention is in global system for mobile communications (GSM GlobalSystem for Mobile communication) terminal, TD SDMA inserts (TD-SCDMATime Division synchronous Code Division Multiple Access) terminal, and wireless code division multiple address inserts (WCDMA Wireless CDMA) terminal, code division multiple access inserts in 2000 (CDMA2000 CodeDivision Multiple Access 2000) terminal and all can be applied.
Should be noted that at last above embodiment is only unrestricted in order to technical scheme of the present invention to be described, all parameter values can be according to the actual conditions adjustment, and in this rights protection scope.Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from the spiritual scope of technical solution of the present invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (15)
1. a method that realizes mobile terminal clock relation track is characterized in that, portable terminal each time after the length of one's sleep, section entered the activationary time section, is carried out the process that the synchronization timing deviation is measured during standby;
In this activationary time section, the result that portable terminal is measured this synchronization timing deviation is used to adjust current timing relationship, and adjusted this timing relationship used in the section in the next length of one's sleep, described activationary time section is arranged in a discontinuous receiving cycle DRX.
2. the method for claim 1, it is characterized in that, described portable terminal carries out the process that at least twice described synchronization timing deviation is measured in same activationary time section, and calculates final synchronization timing deflection measurements according to the synchronization timing deflection measurements and the predetermined policy of each time.
3. method as claimed in claim 2 is characterized in that, portable terminal in carrying out the process that described synchronization timing deviation measures,
Portable terminal contains the data of synchrodata from the packet receiving of communication network termination, and carries out the related operation that described synchronization timing deviation is measured;
If being the synchronization timing deviation of being scheduled to, this correlations computing that portable terminal carries out measures the last of related operation number of times, then calculate final described synchronization timing deflection measurements, measure otherwise portable terminal carries out described synchronization timing deviation once more according to described predetermined policy.
4. method as claimed in claim 2 is characterized in that, portable terminal carries out the related operation that twice described synchronization timing deviation is measured, and then describedly calculates final synchronization timing deflection measurements and comprises:
In the chip threshold value that the result's that the synchronization timing deviation of twice correlation peak is measured difference is being scheduled to, think that then the result of twice described measurement has validity, The ultimate results is got the average of twice measurement result;
When the result's of described measurement difference not in predetermined chip threshold value, a predetermined thresholding then is set, further comprise following three kinds of situations:
Situation one: if the result of twice described measurement all greater than this thresholding, then described The ultimate results is got the average of two times result;
Situation two: if only once the result of described measurement is greater than this thresholding, described The ultimate results is got the synchronization timing deviate of this measurement result correspondence;
Situation three: if the result of twice described measurement all less than this thresholding, described The ultimate results is 0.
5. method as claimed in claim 4 is characterized in that, described final synchronization timing deflection measurements difference, and then after obtaining this final synchronization timing deflection measurements, the different timing relationship adjustment of corresponding execution comprises:
The absolute value of described final synchronization timing deflection measurements is less than or equal to low digital sheet, does not then adjust timing relationship;
The absolute value of described final synchronization timing deflection measurements is greater than low digital sheet and less than the digital sheet of height, and then timing relationship increases or reduce adjustment amount Delta1;
The absolute value of described final synchronization timing deflection measurements is greater than the digital sheet of height, and then the timing relationship adjustment amount that increases or reduce is 2*Delta1.
6. method as claimed in claim 5 is characterized in that, described adjustment amount Delta1=1/65536=0.0000152587890625.
7. method as claimed in claim 5 is characterized in that, described corresponding the execution after the different timing relationship adjustment stored adjusted this timing relationship;
And the process of adjusting described timing relationship is only carried out once in same activationary time section.
8. the method for claim 1 is characterized in that, described portable terminal comprises global mobile telecommunication system at least, and time division synchronization and code division multi-address access terminal, wireless code division multiple address access terminal, code division multiple access inserts 2000 terminals.
9. method as claimed in claim 3 is characterized in that, described portable terminal is in the TDD-LCR system, and this portable terminal contains the data of synchrodata from the packet receiving of described communication network termination at descending pilot frequency time slot.
10. the method for claim 1 is characterized in that, described timing relationship is the low-frequency clock that uses in the portable terminal and as with reference to the relation between the high frequency clock of clock.
11. a device of realizing mobile terminal clock relation track is characterized in that, comprising:
A synchronization timing deviation measuring unit is used for during the standby of portable terminal, each time after the length of one's sleep, section entered the activationary time section, calculates the result that the synchronization timing deviation is measured;
A timing relationship alignment unit, be used for adjusting timing relationship according to the result that the described synchronization timing deviation of calculating is measured, and adjusted this timing relationship used in the section in the next length of one's sleep, described activationary time section is arranged in a discontinuous receiving cycle DRX.
12. device as claimed in claim 11, it is characterized in that, described synchronization timing deviation measuring unit obtains the synchronizing code of described portable terminal, and the synchrodata that this synchronizing code and this portable terminal receive is carried out related operation, calculates effectively first correlation peak;
The synchrodata positional information of the expectation of this portable terminal from the data that the communication network termination is received, this measuring unit are carried out related operation with the synchrodata positional information of this first correlation peak and this expectation and are obtained the result that described synchronization timing deviation is measured.
13. device as claimed in claim 12 is characterized in that, described synchronization timing deviation measuring unit is measured the result of two groups of described related operations, and uses following strategy to obtain the result that final synchronization timing deviation is measured:
The result's who measures when twice described synchronization timing deviation difference is in predetermined chip threshold value, and then the result of twice described measurement is effective, and final synchronization timing deflection measurements is got the result's of twice described measurement average;
When the result's of twice described measurement difference not in predetermined chip threshold value, a predetermined thresholding then is set, and further comprises following three kinds of situations:
If the result of twice described measurement of situation A. is greater than this thresholding, described final synchronization timing deflection measurements is got the average of two times result;
If only once the result of described measurement is greater than this thresholding for situation B., described final synchronization timing deflection measurements is got the synchronization timing deviate of this measurement result correspondence;
If the result of twice described measurement of situation C. is less than this thresholding, described final synchronization timing deflection measurements is 0.
14. device as claimed in claim 13 is characterized in that, described timing relationship alignment unit is adjusted timing relationship according to following strategy:
The absolute value of described final synchronization timing deflection measurements is less than or equal to low digital sheet, does not then adjust timing relationship;
The absolute value of described final synchronization timing deflection measurements is greater than low digital sheet and less than the digital sheet of height, and then timing relationship increases or reduce adjustment amount Delta1; This adjustment amount Delta1=1/65536=0.0000152587890625;
The absolute value of described final synchronization timing deflection measurements is greater than the digital sheet of height, and then the timing relationship adjustment amount that increases or reduce is Delta2=2*Delta1.
15. device as claimed in claim 14 is characterized in that, described timing relationship alignment unit reads after the current timing relationship, judges that further described final synchronization timing deflection measurements is on the occasion of still being negative value;
If described final synchronization timing deflection measurements be on the occasion of, current timing relationship increases an adjustment amount Delta1 or Delta2;
If described final synchronization timing deflection measurements is a negative value, current timing relationship reduces an adjustment amount Delta1 or Delta2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101185077A CN101083815B (en) | 2007-07-06 | 2007-07-06 | Method and apparatus for realizing mobile terminal clock relation track |
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| CN2007101185077A CN101083815B (en) | 2007-07-06 | 2007-07-06 | Method and apparatus for realizing mobile terminal clock relation track |
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| CN101083815A CN101083815A (en) | 2007-12-05 |
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| CN104427595A (en) * | 2013-08-30 | 2015-03-18 | 上海摩波彼克半导体有限公司 | Communication-terminal standby electricity-saving control method and control device |
| CN104640179B (en) * | 2013-11-08 | 2017-10-17 | 联发科技（新加坡）私人有限公司 | Communicator and frequency deviation correcting method |
| CN104717725B (en) * | 2013-12-12 | 2018-09-07 | 展讯通信（上海）有限公司 | A kind of synchronous method under LTE system discontinuous reception modes |
| EP3304754A4 (en) * | 2015-06-01 | 2019-06-26 | Transfert Plus Limited Partnership | Systems and methods for spectrally efficient and energy efficient ultra- wideband impulse radios with scalable data rates |
| CN108024324B (en) * | 2016-11-03 | 2020-07-03 | 厦门紫光展锐科技有限公司 | Multi-mode mobile terminal and method for generating system clock signal thereof |
| CN112532309B (en) * | 2020-12-21 | 2022-07-22 | 四川安迪科技实业有限公司 | Physical layer transmission method and device suitable for simple satellite internet of things terminal |
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| US6564046B1 (en) * | 2000-06-30 | 2003-05-13 | Texas Instruments Incorporated | Method of maintaining mobile terminal synchronization during idle communication periods |
| CN1432217A (en) * | 2000-06-09 | 2003-07-23 | 摩托罗拉公司 | Time synchronisation for mobile systems |
| CN1753534A (en) * | 2005-09-16 | 2006-03-29 | 重庆重邮信科股份有限公司 | Method of improving preciseness of mobile communication terminal low frequency crystal oscillator |
| CN1777310A (en) * | 2005-11-25 | 2006-05-24 | 凯明信息科技股份有限公司 | Clock correcting method and device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1432217A (en) * | 2000-06-09 | 2003-07-23 | 摩托罗拉公司 | Time synchronisation for mobile systems |
| US6564046B1 (en) * | 2000-06-30 | 2003-05-13 | Texas Instruments Incorporated | Method of maintaining mobile terminal synchronization during idle communication periods |
| CN1753534A (en) * | 2005-09-16 | 2006-03-29 | 重庆重邮信科股份有限公司 | Method of improving preciseness of mobile communication terminal low frequency crystal oscillator |
| CN1777310A (en) * | 2005-11-25 | 2006-05-24 | 凯明信息科技股份有限公司 | Clock correcting method and device |
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