CN104954303A - Handheld device and frequency tracking method thereof - Google Patents
Handheld device and frequency tracking method thereof Download PDFInfo
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- CN104954303A CN104954303A CN201510120650.4A CN201510120650A CN104954303A CN 104954303 A CN104954303 A CN 104954303A CN 201510120650 A CN201510120650 A CN 201510120650A CN 104954303 A CN104954303 A CN 104954303A
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Abstract
The invention provides at least one handheld device and a frequency tracking method thereof. One of the handheld devices comprises an oscillator, being configured to generate an oscillation signal; a radio frequency (RF) chip, being electrically connected to the oscillator and configured to receive a paging signal from a paging channel and an RF signal from a non-regular channel based on the oscillation signal; a modem module, being electrically connected to the RF chip; a first thermal sensor, being disposed close to the oscillator and configured to measure a heat source temperature; and a thermal module, being electrically connected to the modem module and the first thermal sensor and configured to enable the modem module to execute a frequency compensation process by using the RF signal or both the paging signal and the RF signal according to the heat source temperature. The handheld device of the present invention timely triggers a modem module to execute a frequency compensation process according to a temperature at the ambient of the oscillator, to effectively reduce receiving failure of channels of a modem caused by large frequency offset caused by the temperature of the oscillator.
Description
Technical field
The present invention is relevant hand-held device (handheld device) and frequency tracking method thereof.More specifically, hand-held device of the present invention performs frequency compensation operation, to reduce the impact of oscillator (oscillator) frequency shift (FS) (frequency offset) caused by thermal source (heat source) according to heat source temperature activated modulation demodulator module.
Background technology
Along with the development of the communication technology, wireless handheld device is widely used in daily life.In order to meet the compact design of hand-held device, be difficult to avoid oscillator to be arranged near base band (Baseband, BB) processor, and baseband processor is the very crucial thermal source of hand-held device.
Because the frequency of oscillator is very sensitive for the change of temperature, the larger change (such as, when baseband processor becomes busy or close) of temperature can cause oscillator to produce larger frequency shift (FS).Frequency shift (FS) accumulation until modulator-demodulator is waken up, to receive the signal from paging channel (Paging Channel, PCH).But ongoing frequency tracking mechanism only uses the periodic signal from paging channel, cannot process larger frequency shift (FS), thus relevant modulator-demodulator channel receives (modem channel reception) likely can be failed.
Correspondingly, in the art, for solving the larger frequency shift (FS) caused by the larger change of oscillator peripheral temperature, with the failure preventing the associated modems channel caused because of larger frequency shift (FS) from receiving, there is urgent demand.
Summary of the invention
In view of this, the invention provides at least one hand-held device and frequency tracking method.
Hand-held device according to an embodiment of the invention, comprises: oscillator, for generation of oscillator signal; Radio frequency (Radio Frequency, RF) chip (chip), be coupled to described oscillator, and for based on described oscillating signal reception from the paging signal of paging channel and the radiofrequency signal from unconventional (non-regular) channel; Modem module, is coupled to described radio frequency chip; First heat-sensitive sensor (thermal sensor), is arranged near described oscillator, and for measuring heat source temperature; And heat-sensitive module (thermal module), be coupled to described modem module and described first heat-sensitive sensor, and for according to described heat source temperature, enable (enable) described modem module uses the combination of described radiofrequency signal or described paging signal and described radiofrequency signal to perform frequency compensation and operates.
A kind of according to another embodiment of the present invention frequency tracking method, for hand-held device, described hand-held device comprises oscillator, radio frequency chip, modem module, first heat-sensitive sensor and heat-sensitive module, the oscillating signal reception that described radio frequency chip is used for producing based on described oscillator is from the paging signal of paging channel and the radiofrequency signal from unconventional channel, described first heat-sensitive sensor to be arranged near described oscillator and for measuring heat source temperature, described frequency tracking method is performed by described heat-sensitive module, described frequency tracking method comprises: (a) reads described heat source temperature by described first heat-sensitive sensor, and (b) is according to described heat source temperature, enable described modem module uses the combination of described radiofrequency signal or described paging signal and described radiofrequency signal to perform frequency compensation and operates.
Hand-held device provided by the present invention and frequency tracking method, one of its advantage be can according to the change of oscillator peripheral temperature in time activated modulation demodulator module perform frequency compensated operation, thus effectively can prevent the failure that the relevant modulator-demodulator channel caused receives because of significantly the changing the larger frequency shift (FS) brought of temperature of oscillator, make hand-held device have higher communication stability.
Accompanying drawing explanation
Figure 1A is the schematic diagram of hand-held device 1 according to a first embodiment of the present invention.
Figure 1B is the schematic diagram of hand-held device 1 according to another embodiment of the present invention.
Fig. 2 A is the schematic diagram of hand-held device 2 according to a second embodiment of the present invention.
Fig. 2 B is the schematic diagram of hand-held device 2 according to another embodiment of the present invention.
Fig. 3 A is the schematic diagram of hand-held device 3 according to a third embodiment of the present invention.
Fig. 3 B is the schematic diagram of hand-held device 3 according to another embodiment of the present invention.
Fig. 4 be according to a first embodiment of the present invention with the flow chart of the frequency tracking method of the 4th embodiment.
Fig. 5 be according to a first embodiment of the present invention with another flow chart of the frequency tracking method of the 4th embodiment.
Fig. 6 A and Fig. 6 B be depicted as according to a second embodiment of the present invention with the flow chart of the frequency tracking method of the 5th embodiment.
Fig. 7 A and Fig. 7 B be according to a third embodiment of the present invention with the flow chart of the frequency tracking method of the 6th embodiment.
Embodiment
Some vocabulary is employed to censure specific assembly in the middle of specification and claim.Those skilled in the art should understand, and hardware manufacturer may call same assembly with different nouns.This specification and claims are not used as with the difference of title the mode distinguishing assembly, but are used as the criterion of differentiation with assembly difference functionally." comprising " and " comprising " mentioned in the middle of specification and claim is in the whole text an open term, therefore should be construed to " comprise but be not limited to "." roughly " refer to that in acceptable error range, those skilled in the art can solve the technical problem within the scope of certain error, reach described technique effect substantially.In addition, " couple " word comprise directly any at this and be indirectly electrically connected means.Therefore, if describe a first device in literary composition to be coupled to one second device, then represent this first device and directly can be electrically connected at this second device, or be indirectly electrically connected to this second device by other device or connection means.The following stated is for implementing preferred mode of the present invention, and object is spirit of the present invention is described and is not used to limit protection scope of the present invention, and protection scope of the present invention is when being as the criterion depending on the accompanying claim person of defining.
As shown in Figure 1A, Figure 1A is the schematic diagram of hand-held device 1 according to a first embodiment of the present invention to the first embodiment of the present invention.Hand-held device 1 comprises oscillator 101, radio frequency chip 103, modem module 105, the first heat-sensitive sensor 107 and heat-sensitive module 109.Hand-held device 1 can be smart mobile phone, panel computer, or there is communication function and meet the second generation (2G) mobile communication standard, other device any of the third generation (3G) mobile communication standard and forth generation (4G) mobile communication standard.Note that for purpose of brevity, other assembly of hand-held device 1, such as display module, Anneta module, power module and the less assembly of property related to the present invention, all omitted herein.
Oscillator 101 is for generation of the oscillator signal 102 with frequency of oscillation.More specifically, oscillator 101 can be crystal oscillator (crystal oscillator) or frequency synthesizer (frequency synthesizer), such as numerically-controlled oscillator (Digitally Controlled Oscillator, DCXO), and be arranged near thermal source (such as, processor).In this case, the heat that thermal source produces changes causing the frequency of oscillator 101 along with the change of temperature.
Radio frequency chip 103 is coupled to oscillator 101, and operates based on oscillator signal 102, to receive the radiofrequency signal on special frequency band.Under normal conditions, radio frequency chip 103 is periodically from paging channel receiving paging signal 104, for frequency tracking object, and receive the radiofrequency signal 106 from other unconventional channel, for objects such as the transfer of data outside frequency tracking object, Control on Communication.
Such as, when hand-held device 1 meets 2G mobile communication standard, unconventional channel comprises Broadcast Control Channel (Broadcast Control Channel, BCCH), frequency correction control channel (Frequency Correction Control Channel, FCCH), synchronizing channel (Synchronization Channel, SCH), CBCH (Cell Broadcast Channel, CBCH), allow access control channel (Access Grant Control Channel, and notification channel (Notification Channel AGCH), NCH).In addition, when hand-held device 1 meets 3G mobile communication standard, unconventional channel comprises Common Pilot Channel (Common Pilot Channel, CPICH), Primary Common Control Physical Channel (Primary-Common Control Physical Channel, P-CCPCH), secondary Common Control Physical Channel (Secondary-Common Control Physical Channel, S-CCPCH), synchronizing channel (Synchronization Channel, SCH), Acquisition Indicator Channel (Acquisition Indicator Channel, and Page Indication Channel (Paging Indicator Channel AICH), PICH).And, when hand-held device 1 meets 4G mobile communication standard, unconventional channel comprises Physical Broadcast Channel (Physical Broadcast Channel, PBCH), physics many ripples channel (Physical Multicast Channel, PMCH), Physical Control Format Indicator Channel (Physical Control Format Indicator Channel, PCFICH), physical hybrid automatic repeat request indicator channel (Physical Hybrid ARQ Indicator Channel, PHICH), Physical Downlink Control Channel (Physical Downlink Control Channel, and Physical Downlink Shared Channel (Physical Downlink Shared Channel PDCCH), PDSCH).
Modem module 105 is coupled to radio frequency chip 103 and heat-sensitive module 109.First heat-sensitive sensor 107 is coupled to heat-sensitive module 109, and is arranged near oscillator 101, with the heat source temperature of measuring oscillator 101 periphery.In another embodiment, the first heat-sensitive sensor 107 can be positioned on oscillator 101.The position of the first heat-sensitive sensor 107 can change according to actual motion, and it is also not used to limit scope of the present invention.Heat-sensitive module 109 reads heat source temperature from the first heat-sensitive sensor 107, and uses from the paging signal 104 of PCH according to the enable modem module of heat source temperature 105 and perform frequency compensation operation from the radiofrequency signal 106 of one or more unconventional channel.Please note, this area has knows that the knowledgeable can understand easily usually, according to actual design, modem module 105 performs frequency compensation operation by using the radiofrequency signal from a unconventional channel or multiple unconventional channel, therefore, unconventional channel number and be not used to limit the present invention.
Such as, heat-sensitive module 109 can calculate the rate of temperature change of heat source temperature, and when rate of temperature change is greater than first threshold, enable modem module 105 uses paging signal 104 and radiofrequency signal 106 to perform frequency compensation operation.First threshold presets based on the frequency shift (FS) characteristic (that is, the relation between frequency shift (FS) and variations in temperature) of oscillator.
More specifically, when significantly rising in the time interval of heat source temperature between two continuous print paging signals 104 or declining, for modem module 105, be difficult to only accurately estimate larger frequency shift (FS) based on the paging signal 104 operated for frequency compensation, or based on (in-band) radiofrequency signal in the oscillator frequency receiving belt of skew.Therefore, relevant modulator-demodulator channel receives can failure.For the failure preventing the modulator-demodulator channel of being correlated with from receiving, the present invention observes heat source temperature further, and use operates for frequency compensation from the radiofrequency signal 106 of unconventional channel more frequently than the reception of paging signal 104 in addition.
Note that in practical operation, when oscillator 101 is frequency synthesizer, frequency compensation operation realizes by the frequency of oscillation of signal transacting and/or adjustment oscillator 101.How perform frequency compensation operation known by those skilled in the art by the adjustment of the frequency of oscillation of signal transacting and/or oscillator synthesizer, therefore, repeat no more herein.
Figure 1B is the schematic diagram of hand-held device 1 according to another embodiment of the present invention.In another embodiment shown in Figure 1B, heat-sensitive module 109 only uses radiofrequency signal 106 to perform frequency compensation operation according to the enable modem module 105 of heat source temperature.In the present embodiment, heat-sensitive module 109 activated modulation demodulator module 105 offsets, this is because the radiofrequency signal 106 being received from one or more unconventional channel is continually enough to compensating frequency deviation in time by only using radiofrequency signal 106 replacement to use paging signal 104 to carry out track frequency with the combination of radiofrequency signal 106.Based on foregoing description, those skilled in the art can understand heat-sensitive module 109 easily and how only use radiofrequency signal 106 activated modulation demodulator module 105 with track frequency skew, thus repeat no more herein.
As shown in Figure 2 A, Fig. 2 A is the schematic diagram of hand-held device 2 according to a second embodiment of the present invention to the second embodiment of the present invention.In the present embodiment, hand-held device 2 comprises baseband processor 201 and the second heat-sensitive sensor 203 further, and wherein baseband processor 201 instead of the heat-sensitive module 109 in the first embodiment.In other words, baseband processor 201 can play the effect identical with heat-sensitive module 109.First heat-sensitive sensor 107 is coupled to baseband processor 201, and is arranged near oscillator 101.
Second heat-sensitive sensor 203 is coupled to baseband processor 201 and for measures ambient temperature (ambient temperature), such as, and the temperature at stow away from heat place.Baseband processor 201, once start, can read heat source temperature from the first heat-sensitive sensor 107, and determine whether baseband processor 201 will close.Such as, if the input signal that other input module not by physical button, contact panel or hand-held device 2 in a period of time inputs, then because this represents that present hand-held device 2 is not user-operably, baseband processor 201 determines that baseband processor 201 will be closed.
When baseband processor 201 can not be closed, baseband processor 201 will calculate the rate of temperature change of heat source temperature, and determine whether rate of temperature change is greater than first threshold.Afterwards, when rate of temperature change is greater than first threshold, the enable modem module 105 of baseband processor 201 uses paging signal 104 and radiofrequency signal 106 to perform frequency compensation operation.
On the contrary, when baseband processor 201 will be closed, baseband processor 201 will read ambient temperature from Secondary Heat Source transducer 203.Then, baseband processor 201 calculates the temperature difference between heat source temperature and ambient temperature, and determines whether the temperature difference is greater than Second Threshold.And when the temperature difference is greater than Second Threshold, the enable modem module 105 of baseband processor 201 uses paging signal 104 and radiofrequency signal 106 to perform frequency compensation operation.
More specifically, the present embodiment hypothesis baseband processor 201 is arranged near oscillator 101, thus baseband processor becomes a crucial thermal source to oscillator 101, and the first heat-sensitive sensor 107 is arranged near oscillator 101 equally, or is arranged in alternatively on baseband processor 201.In this case, when baseband processor 201 becomes busy (busy) or just closes when baseband processor 201, the temperature of oscillator 101 periphery will there will be marked change.By above-mentioned mechanism, no matter hand-held device 2 is in starting state (on-state) or closed condition (off-state) (namely, baseband processor 201 starts or closes) modem module 105 all can trigger to perform frequency compensation operation in time, thus prevent the modulator-demodulator channel of being correlated with from receiving the larger frequency shift (FS) caused because of significantly the changing of temperature of oscillator 101 and the failure caused.
Similarly, Fig. 2 B is the schematic diagram of hand-held device 2 according to another embodiment of the present invention.In the present embodiment, baseband processor 201 activated modulation demodulator module 105 offsets by only using radiofrequency signal 106 replacement to use paging signal 104 to carry out track frequency with the combination of radiofrequency signal 106.As mentioned above, because the radiofrequency signal 106 being received from one or more unconventional channel is continually enough to compensating frequency deviation in time, thus in this frequency tracking mechanism of the application, paging signal 104 is optionally.
Please refer to third embodiment of the invention shown in Fig. 3 A.Fig. 3 A is the schematic diagram of hand-held device 3 according to a third embodiment of the present invention.Different from the hand-held device 1 in the first embodiment, hand-held device 3 comprises baseband processor 303 and the second heat-sensitive sensor 203 further, and wherein baseband processor 303 and the second heat-sensitive sensor 203 are all coupled to heat-sensitive module 109.
In addition, the present embodiment also supposes that baseband processor 303 is arranged near oscillator 101, thus baseband processor becomes a crucial thermal source to oscillator 101, and the first heat-sensitive sensor 107 is arranged near oscillator 101 or is selectively arranged on baseband processor 303.In this case, when becoming busy when baseband processor 303 or close when baseband processor 303, will there is marked change in the peripheral temperature of oscillator 101.
Baseband processor 303 determines whether baseband processor 303 will close, and sends index signal 302 to heat-sensitive module 109.When index signal 302 indicates baseband processor 303 to close, heat-sensitive module 109 calculates the rate of temperature change of heat source temperature, and determines whether rate of temperature change is greater than first threshold.After this, when rate of temperature change is greater than first threshold, the enable modem module 105 of heat-sensitive module 109 uses paging signal 104 and radiofrequency signal 106 to perform frequency compensation operation.
On the contrary, when index signal 302 indicates baseband processor 303 to close, heat-sensitive module 301 calculates the temperature difference between heat source temperature and ambient temperature, and determines whether the temperature difference is greater than Second Threshold.And when the temperature difference is greater than Second Threshold, the enable modem module 105 of heat-sensitive module 301 uses paging signal 104 and radiofrequency signal 106 to perform frequency compensation operation.
Similarly, Fig. 3 B is the schematic diagram of hand-held device 3 according to another embodiment of the present invention.In the present embodiment, heat-sensitive module 109 activated modulation demodulator module 105 uses the combination of paging signal 104 and radiofrequency signal 106 to carry out track frequency skew, this is because the radiofrequency signal 106 being received from one or more unconventional channel is continually enough to compensating frequency deviation in time by only using radiofrequency signal 106 to replace.
Fig. 4 be according to a first embodiment of the present invention with the flow chart of the frequency tracking method of the 4th embodiment.Frequency tracking method in the present embodiment is applicable to hand-held device, such as, and hand-held device 1 described in the first embodiment.Hand-held device comprises oscillator, radio frequency chip, modem module, the first heat-sensitive sensor and heat-sensitive module.Radio frequency chip is used for based on oscillating signal reception from the paging signal of PCH and the radiofrequency signal from unconventional channel, and wherein, this oscillator signal has the frequency of oscillation that oscillator produces.First heat-sensitive sensor is arranged near oscillator, and for measuring heat source temperature.
Frequency tracking method is performed by heat-sensitive module.First, step 401 is performed to read heat source temperature from the first heat-sensitive sensor.Then, in step 403, according to heat source temperature, the enable modem module of heat-sensitive module uses the combination of radiofrequency signal or paging signal and radiofrequency signal to perform frequency compensation and operates.
Such as, in another embodiment, step 403 can comprise the step 4031 shown in Fig. 5 and step 4033 further.Fig. 5 be according to a first embodiment of the present invention with another flow chart of the frequency tracking method of the 4th embodiment.Perform step 4031 to calculate the rate of temperature change of heat source temperature.Then, when rate of temperature change is greater than first threshold, execution step 4033 uses the combination of radiofrequency signal or paging signal and radiofrequency signal to perform frequency compensation with enable modem module and operates.Therefore, modem module can trigger to perform frequency compensation operation in time, thus prevents the failure that the modulator-demodulator channel of being correlated with receives.
Beyond above-mentioned steps, the frequency tracking method of the present embodiment also can perform all operations in the first embodiment and corresponding function.Based on the explanation of the first embodiment, those skilled in the art can understand the present embodiment easily and how perform these operation and functions, thus repeat no more herein.
Fig. 6 A and Fig. 6 B be depicted as according to a second embodiment of the present invention with the flow chart of the frequency tracking method of the 5th embodiment.This frequency tracking method is applicable to hand-held device, such as, and the hand-held device 2 in the second embodiment.Hand-held device comprises oscillator, radio frequency chip, modem module, baseband processor, the first heat-sensitive sensor and the second heat-sensitive sensor.
This frequency tracking method is performed by baseband processor.First, as shown in Figure 6A, in step 601, baseband processor reads heat source temperature from the first heat-sensitive sensor, and reads ambient temperature from the second heat-sensitive sensor.Then, in step 603, whether baseband processor determination baseband processor will close.If baseband processor can not be closed, so perform step 605 to calculate the rate of temperature change of heat source temperature.Then, in step 607, whether baseband processor determination rate of temperature change is greater than first threshold.After this, in step 607, if rate of temperature change is greater than first threshold, then performs step 609 and use the combination of radiofrequency signal or paging signal and radiofrequency signal to perform frequency compensation with enable modem module to operate.
On the other hand, in step 603, if baseband processor will be closed, step 611 will so be performed to calculate the temperature difference between heat source temperature and ambient temperature.Then, in step 613, baseband processor determines whether the temperature difference is greater than Second Threshold further.After this, in step 613, if the temperature difference is greater than Second Threshold, so performs step 615 and use the combination of radiofrequency signal or paging signal and radiofrequency signal to perform frequency compensation with enable modem module to operate.Therefore, no matter rate of temperature change is greater than first threshold (when baseband processor can not be closed) or the temperature difference is greater than Second Threshold (when baseband processor will be closed), the present invention all can activated modulation demodulator module in time, with the failure preventing the relevant modulator-demodulator channel caused because of significantly changing of oscillator peripheral temperature from receiving.
In addition, as shown in Figure 6A, if rate of temperature change is not more than first threshold in step 607, or after execution step 609, then frequency tracking method returns further and performs step 601.In addition, as shown in Figure 6B, if the temperature difference is not more than Second Threshold in step 613, or after step 615, then baseband processor is closed at short notice.When baseband processor starts again, again perform step 601.
Beyond above-mentioned steps, the frequency tracking method of the present embodiment also can perform all operations in the second embodiment and corresponding function.Based on the explanation of the second embodiment, those skilled in the art can understand the present embodiment easily and how perform these operation and functions, thus repeat no more herein.
Please refer to sixth embodiment of the invention in Fig. 7 A and Fig. 7 B.Fig. 7 A and Fig. 7 B be according to a third embodiment of the present invention with the flow chart of the frequency tracking method of the 6th embodiment.Frequency tracking method in the present embodiment is applicable to hand-held device, such as, and hand-held device 3 described in the 3rd embodiment.Hand-held device comprises oscillator, radio frequency chip, modem module, baseband processor, the first heat-sensitive sensor and the second heat-sensitive sensor.Frequency tracking method is in the present embodiment performed by heat-sensitive module.
In step 701, heat-sensitive module reads heat source temperature from the first heat-sensitive sensor, and reads ambient temperature from the second heat-sensitive sensor.Then, in step 703, heat-sensitive module calculates the rate of temperature change of heat source temperature.Then, in step 705, heat-sensitive module determines whether to receive the index signal from baseband processor.Whether this index signal instruction baseband processor will close, so that heat-sensitive module can perform following step according to index signal.After receiving the index signal from baseband processor, heat-sensitive module performs step 707 to determine whether index signal indicates baseband processor to close.If index signal instruction baseband processor can not be closed, then heat-sensitive module will perform step 709 to determine whether rate of temperature change is greater than first threshold further; Otherwise heat-sensitive module 301 performs the step 713 in Fig. 7 B.
Then, if rate of temperature change is greater than first threshold in step 709, so performs step 711 and use the combination of radiofrequency signal or paging signal and radiofrequency signal to perform frequency compensation with enable modem module to operate.
On the other hand, if indicate signal designation baseband processor to close in step 707, so heat-sensitive module 301 performs step 713 to calculate the temperature difference between heat source temperature and ambient temperature.Then, in a step 715, heat-sensitive module 301 confirms whether the temperature difference is greater than Second Threshold further.If the temperature difference is greater than Second Threshold in a step 715, so performs step 717 and use the combination of radiofrequency signal or paging signal and radiofrequency signal to perform frequency compensation with enable modem module to operate.
In addition, if be not sent to the index signal of heat-sensitive module in step 705 from baseband signal, if difference variation rate is not more than first threshold in step 709, or after step 711, then frequency tracking method is back to and performs step 701.In addition, if the temperature difference is not more than Second Threshold in a step 715, or after step 717, frequency tracking method also can be back to and perform step 701.
Beyond above-mentioned steps, the frequency tracking method of the present embodiment also can perform all operations in the 3rd embodiment and corresponding function.Based on the explanation of the 3rd embodiment, those skilled in the art can understand the present embodiment easily and how perform these operation and functions, thus repeat no more herein.
According to foregoing description, frequency tracking mechanism of the present invention can according to the variations in temperature of oscillator periphery, and the modem module of Triggering hand-held device is to perform frequency compensation operation in time.Therefore, the present invention can prevent the failure that the relevant modulator-demodulator channel caused receives because of significantly the changing the larger frequency shift (FS) brought of temperature of oscillator effectively.Therefore, hand-held device of the present invention has higher communication stability.
Although the present invention discloses as above with preferred embodiment; so itself and be not used to limit the present invention, anyly have the knack of this those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on the accompanying claim person of defining.
Claims (20)
1. a hand-held device, comprises:
Oscillator, for generation of oscillator signal;
Radio frequency chip, is coupled to described oscillator, and for based on described oscillating signal reception from the paging signal of paging channel and the radiofrequency signal from unconventional channel;
Modem module, is coupled to described radio frequency chip;
First heat-sensitive sensor, is arranged near described oscillator, and for measuring heat source temperature; And
Heat-sensitive module, be coupled to described modem module and described first heat-sensitive sensor, and operate for using the combination of described radiofrequency signal or described paging signal and described radiofrequency signal to perform frequency compensation according to the enable described modem module of described heat source temperature.
2. hand-held device according to claim 1, it is characterized in that, described heat-sensitive module is for calculating the rate of temperature change of described heat source temperature, and when described rate of temperature change is greater than first threshold, enable described modem module performs the operation of described frequency compensation.
3. hand-held device according to claim 1, it is characterized in that, described heat-sensitive module is baseband processor, described baseband processor is used for determining whether described baseband processor will close, when described baseband processor will be closed, described baseband processor calculates the rate of temperature change of described heat source temperature, determine whether described rate of temperature change is greater than first threshold, and when described rate of temperature change is greater than described first threshold, enable described modem module performs the operation of described frequency compensation.
4. hand-held device according to claim 1, it is characterized in that comprising the second heat-sensitive sensor further, described second heat-sensitive sensor is coupled to described heat-sensitive module, and for measures ambient temperature, wherein, described heat-sensitive module is baseband processor, and described baseband processor is used for determining whether described baseband processor will close, when described baseband processor will be closed, described baseband processor calculates the temperature difference between described heat source temperature and described ambient temperature, determine whether the described temperature difference is greater than Second Threshold, and when the described temperature difference is greater than described Second Threshold, enable described modem module performs the operation of described frequency compensation.
5. hand-held device according to claim 1, it is characterized in that comprising baseband processor and the second heat-sensitive sensor further, wherein, described second heat-sensitive sensor is coupled to described heat-sensitive module, and for measures ambient temperature, described baseband processor is coupled to described heat-sensitive module, and for determining whether described baseband processor will close, and send index signal to described heat-sensitive module, and when described index signal indicates described baseband processor to close, described heat-sensitive module calculates the rate of temperature change of described heat source temperature, determine whether described rate of temperature change is greater than first threshold, and when described rate of temperature change is greater than described first threshold, enable described modem module performs the operation of described frequency compensation.
6. hand-held device according to claim 1, it is characterized in that comprising baseband processor and the second heat-sensitive sensor further, wherein, described second heat-sensitive sensor is coupled to described heat-sensitive module, and for measures ambient temperature, described baseband processor is coupled to described heat-sensitive module, and for determining whether described baseband processor will close, and send index signal to described heat-sensitive module, and when described index signal indicates described baseband processor to close, described heat-sensitive module calculates the temperature difference between described heat source temperature and described ambient temperature, determine whether the described temperature difference is greater than Second Threshold, and when the described temperature difference is greater than described Second Threshold, enable described modem module performs the operation of described frequency compensation.
7. hand-held device according to claim 1, is characterized in that, described unconventional signal is Broadcast Control Channel, frequency correction control channel, synchronizing channel, CBCH and permission access channel, one in notification channel.
8. hand-held device according to claim 1, is characterized in that, described unconventional channel is Common Pilot Channel, Primary Common Control Physical Channel, secondary Common Control Physical Channel, synchronizing channel, one in Acquisition Indicator Channel and Page Indication Channel.
9. hand-held device according to claim 1, is characterized in that, described unconventional channel is Physical Broadcast Channel, Physical Multicast Channel, Physical Control Format Indicator Channel, physical hybrid automatic repeat request indicator channel, one in Physical Downlink Control Channel and Physical Downlink Shared Channel.
10. hand-held device according to claim 1, is characterized in that, described oscillator is one in crystal oscillator and numerically-controlled oscillator.
11. 1 kinds of frequency tracking methods, for hand-held device, described hand-held device comprises oscillator, radio frequency chip, modem module, first heat-sensitive sensor and heat-sensitive module, the oscillating signal reception that described radio frequency chip is used for producing based on described oscillator is from the paging signal of paging channel and the radiofrequency signal from unconventional channel, described first heat-sensitive sensor to be arranged near described oscillator and for measuring heat source temperature, described frequency tracking method is performed by described heat-sensitive module, and described frequency tracking method comprises:
A () reads described heat source temperature by described first heat-sensitive sensor; And
B (), according to described heat source temperature, enable described modem module uses the combination of described radiofrequency signal or described paging signal and described radiofrequency signal to perform frequency compensation and operates.
12. frequency tracking methods according to claim 11, is characterized in that described step (b) comprises further:
Calculate the rate of temperature change of described heat source temperature; And
When described rate of temperature change is greater than first threshold, enable described modem module performs the operation of described frequency compensation.
13. frequency tracking methods according to claim 11, is characterized in that, described heat-sensitive module is baseband processor, and described step (b) comprises further:
Determine whether described baseband processor will close;
Calculate the rate of temperature change of described heat source temperature;
When described baseband processor can not be closed, determine whether described rate of temperature change is greater than first threshold; And
When described rate of temperature change is greater than described first threshold, enable described modem module performs the operation of described frequency compensation.
14. frequency tracking methods according to claim 11, it is characterized in that, described hand-held device comprises the second heat-sensitive sensor for measures ambient temperature further, described heat-sensitive module is baseband processor, described step (a) comprises further reads described ambient temperature by described second heat-sensitive sensor, and described step (b) comprises further:
Determine whether described baseband processor will close; And
When described baseband processor will be closed, calculate the temperature difference between described heat source temperature and described ambient temperature;
Determine whether the described temperature difference is greater than Second Threshold; And
When the described temperature difference is greater than described Second Threshold, enable described modem module performs the operation of described frequency compensation.
15. frequency tracking methods according to claim 11, it is characterized in that, described hand-held device comprises baseband processor further, and described step (b) comprise further:
Calculate the rate of temperature change of described heat source temperature;
After receiving the index signal can not closed from the described baseband processor of instruction of described baseband processor, determine whether described rate of temperature change is greater than first threshold; And
When described rate of temperature change is greater than described first threshold, enable described modem module performs the operation of described frequency compensation.
16. frequency tracking methods according to claim 11, it is characterized in that, described hand-held device comprises baseband processor and the second heat-sensitive sensor for measures ambient temperature further, described step (a) comprises further reads described ambient temperature by described second heat-sensitive sensor, and described step (b) comprises further:
After receiving the index signal will closed from the described baseband processor of instruction of described baseband processor, calculate the temperature difference between described heat source temperature and described ambient temperature;
Determine whether the described temperature difference is greater than Second Threshold; And
When the described temperature difference is greater than described Second Threshold, enable described modem module performs the operation of described frequency compensation.
17. frequency tracking methods according to claim 11, is characterized in that, described unconventional signal is Broadcast Control Channel, frequency correction control channel, synchronizing channel, CBCH and permission access channel, one in notification channel.
18. frequency tracking methods according to claim 11, is characterized in that, described unconventional channel is Common Pilot Channel, Primary Common Control Physical Channel, secondary Common Control Physical Channel, synchronizing channel, one in Acquisition Indicator Channel and Page Indication Channel.
19. frequency tracking methods according to claim 11, it is characterized in that, described unconventional channel is Physical Broadcast Channel, Physical Multicast Channel, Physical Control Format Indicator Channel, physical hybrid automatic repeat request indicator channel, one in Physical Downlink Control Channel and Physical Downlink Shared Channel.
20. frequency tracking methods according to claim 11, is characterized in that, described oscillator is one in crystal oscillator and numerically-controlled oscillator.
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| US201461971906P | 2014-03-28 | 2014-03-28 | |
| US61/971,906 | 2014-03-28 | ||
| US14/587,128 US9531387B2 (en) | 2014-03-28 | 2014-12-31 | Handheld device and frequency tracking method thereof |
| US14/587,128 | 2014-12-31 |
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| CN109873636A (en) * | 2019-03-27 | 2019-06-11 | 维沃移动通信有限公司 | Frequency adjusting method and mobile terminal |
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