CN104378109A - Synchronous clock signal compensation method and device - Google Patents
Synchronous clock signal compensation method and device Download PDFInfo
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- CN104378109A CN104378109A CN201310351542.9A CN201310351542A CN104378109A CN 104378109 A CN104378109 A CN 104378109A CN 201310351542 A CN201310351542 A CN 201310351542A CN 104378109 A CN104378109 A CN 104378109A
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- 239000013078 crystal Substances 0.000 claims abstract description 93
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
- H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
- H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
- H03L1/026—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using a memory for digitally storing correction values
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Abstract
The invention discloses a synchronous clock signal compensation method. The method comprises the steps that when it is determined that a communication network element does not acquire a reference clock signal while a clock signal compensation condition is met, compensation parameters are determined for the clock signal of the communication network element according to a pre-fit aging function, and the clock signal output by a crystal oscillator in the communication network element is compensated according to the compensation parameters. The invention further discloses a synchronous clock signal compensation device at the same time. According to the technical scheme, the clock signal of the communication network element can be effectively calibrated when the reference clock signal is not acquired.
Description
Technical field
The present invention relates to the clock signal synchronization technology in communication, particularly relate to a kind of synchronizing clock signals compensation method and device.
Background technology
The reference clock signal of communication network element remains within the scope of index request in frequency and phase place, the signal transmitted between communication network element could be separated reconciliation process exactly, otherwise will have influence on the work of base station, such as, cause user's communication Quality Down, even occur the faults such as call drop.
At present, communication field adopts GPS (Global Position System) (GNSS mostly, Global NavigationSatellite System) as the reference source of synchronizing clock signals, for calibrating the clock signal of base station system, to reach the clock signal synchronization of each base station.But because GNSS signal is easily disturbed or by shield, and satellite receiver also there will be fault, cause can not receive the synchronizing clock signals as with reference to source, therefore, local clock pulses must have clock signal hold facility.In the normal situation in clock reference source, base station clock whistle control system adopts a set of phase-locked control algolithm to carry out compensating clock signal errors usually, constantly regulates the voltage-controlled voltage of high stability crystal oscillator to ensure the stability of reference frequency.But, lose or fault once clock reference source, clock signal crystal oscillator will be in free concussion state, be there is larger error by the now impact of the aging and ambient temperature of clock signal crystal oscillator in the frequency causing clock signal crystal oscillator to export, these errors can affect timing base and the frequency departure of communication system, thus cause occurring the faults such as speech quality decline and call drop.
In order to overcome the above problems, industry adopts the better clock signal crystal oscillator of stability as local clock signal source mostly, reduce the ageing rate of clock signal crystal oscillator own to the impact of frequency, but the ageing rate of clock signal crystal oscillator is inherent characteristic, can not eliminate as far as possible.And if improve the aging index of clock signal crystal oscillator, the cost of manufacture of clock signal crystal oscillator can sharply increase.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of synchronizing clock signals compensation method and device, can when not getting reference clock signal, the effectively clock signal of calibration communication network element.
For achieving the above object, technical scheme of the present invention is achieved in that
Embodiments provide a kind of synchronizing clock signals compensation method, described method comprises:
When determining communication network element not get reference clock signal and meet compensated clock signal condition, according to the clock signal determination compensating parameter that the aging function of matching is in advance described communication network element, and according to described compensating parameter, the clock signal that crystal oscillator in described communication network element exports is compensated.
In such scheme, described method also comprises:
The compensating parameter of the clock signal determination current time that crystal oscillator exports in the reference clock signal got according to communication network element and described communication network element;
Determined all compensating parameters in statistics preset period of time, and the aging function of crystal oscillator in communication network element according to all compensating parameter matchings determined in described preset period of time.
In such scheme, described reference clock signal is GPS (Global Position System) GNSS clock signal or Beidou satellite navigation system BDS clock signal or global position system GPS clock signal.
In such scheme, the compensating parameter of the clock signal determination current time that crystal oscillator exports in the described reference clock signal that gets according to communication network element and described communication network element, comprising:
The phase difference of the clock signal that crystal oscillator exports in more described reference clock signal and described communication network element, and described phase difference is converted to corresponding digital control voltage signal;
Described digital control voltage signal is converted to corresponding analog control voltage signal, and using described analog control voltage signal as described compensating parameter.
In such scheme, in the described reference clock signal that gets according to communication network element and described communication network element the clock signal determination current time that crystal oscillator exports compensating parameter after, described method also comprises:
According to described compensating parameter, the clock signal that crystal oscillator in described communication network element exports is compensated.
In such scheme, the aging function of crystal oscillator in described communication network element according to all compensating parameter matchings determined in described preset period of time, comprising:
According to all compensating parameters determined in the preset period of time before current time, adopt the aging function of crystal oscillator in communication network element described in power function fitting.
In such scheme, described in determine that communication network element does not get reference clock signal and meets compensated clock signal condition, comprising:
When determining that described communication network element does not get reference clock signal, when the quantity of determined all compensating parameters reaches default value in detection preset period of time, be defined as described communication network element and meet compensated clock signal condition.
In such scheme, the aging function of described basis matching is in advance the clock signal determination compensating parameter of described communication network element, and compensates the clock signal that crystal oscillator in described communication network element exports according to described compensating parameter, comprising:
According to the compensating parameter of the clock signal of the described communication network element of the aging function determination current time of current time value and described matching in advance;
The time corresponding to number of times, each compensation that compensates and the compensation subparameter corresponding to each compensation is determined according to the compensating parameter of the clock signal of the described communication network element of described current time;
Time corresponding to described compensation number of times, each compensation and the compensation subparameter corresponding to each compensation carry out at least single compensation to the clock signal that crystal oscillator in described communication network element exports.
The embodiment of the present invention additionally provides a kind of synchronizing clock signals compensation arrangement, and described device comprises: the first determination module and compensating module; Wherein,
Described first determination module, when meeting compensated clock signal condition for determining communication network element not get reference clock signal, is the clock signal determination compensating parameter of described communication network element according to the aging function of matching in advance;
Described compensating module, for compensating the clock signal that crystal oscillator in described communication network element exports according to described compensating parameter.
In such scheme, described device also comprises: the second determination module and fitting module; Wherein,
Described second determination module, for the compensating parameter of the clock signal determination current time that crystal oscillator in the reference clock signal that gets according to communication network element and described communication network element exports;
Described fitting module, for adding up determined all compensating parameters in preset period of time, and the aging function of crystal oscillator in communication network element according to all compensating parameter matchings determined in described preset period of time.
In such scheme, described reference clock signal is GNSS clock signal or BDS clock signal or GPS clock signal.
In such scheme, described second determination module comprises: phase demodulation submodule, the first transform subblock and the second transform subblock; Wherein,
Described phase demodulation submodule, for the phase difference of the clock signal that crystal oscillator in more described reference clock signal and described communication network element exports;
Described first transform subblock, for being converted to corresponding digital control voltage signal by described phase difference;
Described second transform subblock, for being converted to corresponding analog control voltage signal, and using described analog control voltage signal as described compensating parameter by described digital control voltage signal.
In such scheme, described compensating module, after the compensating parameter of the clock signal determination current time also exported for crystal oscillator in the reference clock signal that gets according to communication network element at described second determination module and described communication network element, the compensating parameter according to described current time compensates the clock signal that crystal oscillator in described communication network element exports.
In such scheme, described fitting module, also for according to all compensating parameters determined in the preset period of time before current time, adopts the aging function of crystal oscillator in communication network element described in power function fitting.
In such scheme, described first determination module comprises detection sub-module, during for determining that communication network element does not get reference clock signal, when the quantity of determined all compensating parameters reaches default value in detection preset period of time, be defined as described communication network element and meet compensated clock signal condition.
In such scheme, described first determination module also comprises first and determines submodule; Described compensating module comprises: second determines submodule and compensate submodule; Wherein,
Described first determines submodule, for the compensating parameter of the clock signal of communication network element according to the aging function determination current time of current time value and described matching in advance;
Described second determines submodule, for determining the time corresponding to number of times, each compensation that compensates and the compensation subparameter corresponding to each compensation according to described compensating parameter;
Described compensation submodule, carries out at least single compensation for the time corresponding to described compensation number of times, each compensation and the compensation subparameter corresponding to each compensation to the clock signal that crystal oscillator in described communication network element exports.
The synchronizing clock signals compensation method that the embodiment of the present invention is recorded, comprise: when determining that communication network element does not get reference clock signal and meets compensated clock signal condition, according to the clock signal determination compensating parameter that the aging function of matching is in advance described communication network element, and according to described compensating parameter, the clock signal that crystal oscillator in described communication network element exports is compensated.So, the stability of communication network element clock signal can be ensured when reference clock signal loss or fault; Further, without the need to adopting the crystal oscillator of high cost in prior art.
Accompanying drawing explanation
Fig. 1 is the realization flow schematic diagram of embodiment of the present invention synchronizing clock signals compensation method;
Fig. 2 is embodiment of the present invention base station synchronization clock signal schematic diagram;
Fig. 3 is crystal oscillator aging curve figure in the embodiment of the present invention;
Fig. 4 is crystal oscillator 4 power function aging curve fitted figure in the embodiment of the present invention;
Fig. 5 is crystal oscillator compensation of ageing comparison diagram in the embodiment of the present invention;
Fig. 6 is the schematic diagram that in the embodiment of the present invention, clock signal keeps starting point;
Fig. 7 is the structure composition schematic diagram of synchronizing clock signals compensation arrangement in the embodiment of the present invention;
Fig. 8 is the structure composition schematic diagram of the second determination module in embodiment of the present invention synchronizing clock signals compensation arrangement;
Fig. 9 is the structure composition schematic diagram of the first determination module in embodiment of the present invention synchronizing clock signals compensation arrangement;
Figure 10 is the structure composition schematic diagram of compensating module in embodiment of the present invention synchronizing clock signals compensation arrangement.
Embodiment
In order to more at large understand feature of the present invention and technology contents, below in conjunction with accompanying drawing, realization of the present invention is described in detail, the use of appended accompanying drawing explanation only for reference, is not used for limiting the present invention.
The embodiment of the present invention describes a kind of synchronizing clock signals compensation method, as shown in Figure 1, said method comprising the steps of:
Step 101: when determining that communication network element does not get reference clock signal and meets compensated clock signal condition is the clock signal determination compensating parameter of described communication network element according to the aging function of matching in advance.
Preferably, described reference clock signal is GNSS clock signal or Beidou satellite navigation system (BDS, BeiDou navigation satellite System) clock signal or global positioning system (GPS, GlobalPositioning System) clock signal.
Preferably, described method also comprises:
The compensating parameter of the clock signal determination current time that crystal oscillator exports in the reference clock signal got according to communication network element and described communication network element;
Determined all compensating parameters in statistics preset period of time, and the aging function of crystal oscillator in communication network element according to all compensating parameter matchings determined in described preset period of time.
Preferably, the compensating parameter of the clock signal determination current time that crystal oscillator exports in the described reference clock signal that gets according to communication network element and described communication network element, comprising:
The phase difference of the clock signal that crystal oscillator exports in more described reference clock signal and described communication network element, and described phase difference is converted to corresponding digital control voltage signal;
Described digital control voltage signal is converted to corresponding analog control voltage signal, and using described analog control voltage signal as described compensating parameter.
Here, according to proportional-integral-differential (PID, Proportional Integral Derivative) control algolithm, described phase difference can be converted to corresponding digital control voltage signal.
When practical application, the phase difference of the clock signal that can be exported by crystal oscillator in the real-time more described reference clock signal of phase discriminator and described base station; As shown in Figure 2, REF_PP1S is sent to phase discriminator after getting reference signal second (REF_PP1S) of GPS or BDS or GNSS by base station; Meanwhile, 10M signal second (10M_PP1S) from crystal oscillator is also sent to phase discriminator by base station; Phase discriminator passes through two clock signals, and namely the phase demodulation process of REF_PP1S and 10M_PP1S, draws the phase difference of two clock signals; Then adopt PID to control phase difference of getting it right to process, obtain digital control voltage signal then; Because the clock signal adjusting crystal oscillator needs analog signal, therefore, then by digital control voltage signal the analog control voltage signal that digital analog converter (DAC, Digital to Analog Converter) is converted to correspondence is passed through; Finally, be input to by analog control voltage signal in crystal oscillator and adjust the clock signal that crystal oscillator exports, the clock signal that crystal oscillator is exported is consistent with reference clock signal.
Preferably, in the described reference clock signal that gets according to communication network element and described communication network element the clock signal determination current time that crystal oscillator exports compensating parameter after, described method also comprises:
According to described compensating parameter, the clock signal that crystal oscillator in described communication network element exports is compensated.
In the embodiment of the present invention, due to most of clock signal control board (hereinafter referred to as CC plate) all can have Large Copacity nonvolatile memory, therefore, the storage that special space compensates parameter can be opened up.Specific address, after CC plate powers on, enters clock signal synchronization pattern, if now reference clock signal can be used, then carries out phase demodulation control by the principle shown in Fig. 1 to the clock signal that crystal oscillator exports, and final realization is synchronous with reference clock signal.In synchronous process, phase discriminator constantly can carry out phase demodulation with the frequency ensureing crystal oscillator and export in certain deviation range, and the compensating parameter of phase demodulation just in time reflects is exactly the aging characteristics of crystal oscillator.
Here, because crystal oscillator belongs to high stability crystal oscillator, need just can reach stable rate-adaptive pacemaker certain warm-up time after the power-up, therefore in synchronous mode, power-on time is more of a specified duration, and the frequency of output is more stable, and the compensating parameter of preservation just can reflect real aging function or aging curve.Therefore, the storage mode of the embodiment of the present invention is heap stack mode, namely the storehouse of one piece of memory space as compensating parameter is opened up in memory, after new compensating parameter produces, in the mode of pop down by new compensating parameter stored in memory space, the compensating parameter of earliest time point just can be given up, and so no matter how long system hold time has, what always deposit in memory space is compensating parameter in the up-to-date period, the such as compensating parameter of nearest 24 hours.
Preferably, the aging function of crystal oscillator in described communication network element according to all compensating parameter matchings determined in described preset period of time, comprising:
According to all compensating parameters determined in the preset period of time before current time, adopt the aging function of crystal oscillator in communication network element described in power function fitting.
The aging function of the crystal oscillator in the embodiment of the present invention is similar to power function, and through repeatedly matching, find that the aging function of 4 power functions and high stability crystal oscillator is the most identical, 4 power functions of foundation as shown in Equation (1).
f′=at
4+bt
3+ct
2+dt+e （1）
Wherein, clock signal f ' is drift frequency; T is the time; A, b, c, d, e are undetermined coefficient.
In embodiments of the present invention, after the duration of the analog control voltage signal stored reaches certain time length, such as 24 hours, just can carry out the simulation of aging curve, as shown in Figure 3, the aging curve parabolically shape of crystal oscillator, and there is one-way, namely from for a long time, always as a direction drift, and final curve is very level and smooth, such curve is easy to carry out compensated clock signal.
By the compensating parameter that different time sections stores is converted to deviation frequency, can undetermined coefficient be determined, thus obtain the matching aging function of crystal oscillator, and the matching aging curve of crystal oscillator, as shown in Figure 4.
Preferably, described in determine that communication network element does not get reference clock signal and meets compensated clock signal condition, comprising:
When determining that described communication network element does not get reference clock signal, when the quantity of determined all compensating parameters reaches default value in detection preset period of time, be defined as described communication network element and meet compensated clock signal condition.
Step 102: the clock signal that crystal oscillator in described communication network element exports is compensated according to described compensating parameter.
Preferably, the aging function of described basis matching is in advance the clock signal determination compensating parameter of described communication network element, and compensates the clock signal that crystal oscillator in described communication network element exports according to described compensating parameter, comprising:
According to the compensating parameter of the clock signal of the described communication network element of the aging function determination current time of current time value and described matching in advance;
The time corresponding to number of times, each compensation that compensates and the compensation subparameter corresponding to each compensation is determined according to the compensating parameter of the clock signal of the described communication network element of described current time;
Time corresponding to described compensation number of times, each compensation and the compensation subparameter corresponding to each compensation carry out at least single compensation to the clock signal that crystal oscillator in described communication network element exports.
Such as, need to regulate 0.5 unit in 10 minutes, first can regulate forward 1 constituent parts at first 5 minutes, within latter 5 minutes, regulate 1 constituent parts backward, basic guarantee have adjusted forward 0.5 unit in 10 minutes, which improves the precision of compensated clock signal.
Fig. 5 is the schematic diagram carrying out compensated clock signal according to aging function, and as shown in Figure 5, the aging curve of crystal oscillator obviously obtains compensation, and maximum aging drift rate mean value is very low, and overall compensation of ageing clearly, can suppress the aging drift of crystal oscillator effectively.In the embodiment of the present invention, the aging curve that different crystal oscillators simulates also is inconsistent, only has the more accurate of curve, and the effect of compensation just can be better, otherwise can mend poorer and poorer.
When reference clock signal breaks down or lose, Holdover mode can be entered at once, but now the analog control voltage of crystal oscillator has a larger fluctuation, as shown in Figure 6.This loses due to reference clock signal to cause the impact of crystal oscillator, if compensated using this point as starting point, compensated curve can be larger with actual curve deviation, therefore should estimate with the analog control voltage of time of a section above, calculate that the regular hour is as maintenance starting point more backward, so just can avoid the hop keeping moment, reach better compensation effect.
The embodiment of the present invention also describes a kind of synchronizing clock signals compensation arrangement, and as shown in Figure 7, described device comprises: the first determination module 71 and compensating module 72; Wherein,
Described first determination module 71, when meeting compensated clock signal condition for determining communication network element not get reference clock signal, is the clock signal determination compensating parameter of described communication network element according to the aging function of matching in advance;
Described compensating module 72, for compensating the clock signal that crystal oscillator in described communication network element exports according to described compensating parameter.
Preferably, described device also comprises: the second determination module 73 and fitting module 74; Wherein,
Described second determination module 73, for the compensating parameter of the clock signal determination current time that crystal oscillator in the reference clock signal that gets according to communication network element and described communication network element exports;
Described fitting module 74, for adding up determined all compensating parameters in preset period of time, and the aging function of crystal oscillator in communication network element according to all compensating parameter matchings determined in described preset period of time.
Preferably, described reference clock signal is GNSS clock signal or BDS clock signal or GPS clock signal.
Preferably, as shown in Figure 8, described second determination module 73 comprises: phase demodulation submodule 731, first transform subblock 732 and the second transform subblock 733; Wherein,
Described phase demodulation submodule 731, for the phase difference of the clock signal that crystal oscillator in more described reference clock signal and described communication network element exports;
Described first transform subblock 732, for being converted to corresponding digital control voltage signal by described phase difference;
Described second transform subblock 733, for being converted to corresponding analog control voltage signal, and using described analog control voltage signal as described compensating parameter by described digital control voltage signal.
Preferably, described compensating module 72, after the compensating parameter of the clock signal determination current time also exported for crystal oscillator in the reference clock signal that gets according to communication network element at described second determination module 73 and described communication network element, according to described compensating parameter, the clock signal that crystal oscillator in described communication network element exports is compensated.
Preferably, described fitting module 74, also for according to all compensating parameters determined in the preset period of time before current time, adopts the aging function of crystal oscillator in communication network element described in power function fitting.
Preferably, as shown in Figure 9, described first determination module 71 comprises detection sub-module 711, during for determining that communication network element does not get reference clock signal, when the quantity of determined all compensating parameters reaches default value in detection preset period of time, be defined as described communication network element and meet compensated clock signal condition.
Preferably, as shown in Figure 9, described first determination module 71 also comprises first and determines submodule 712; As shown in Figure 10, described compensating module 72 comprises: second determines submodule 721 and compensate submodule 722; Wherein,
Described first determines submodule 712, for the compensating parameter of the clock signal of communication network element according to the aging function determination current time of current time value and described matching in advance;
Described second determines submodule 721, and the compensating parameter for the clock signal of the described communication network element according to described current time determines the time corresponding to number of times, each compensation that compensates and the compensation subparameter corresponding to each compensation;
Described compensation submodule 722, carries out at least single compensation for the time corresponding to described compensation number of times, each compensation and the compensation subparameter corresponding to each compensation to the clock signal that crystal oscillator in described communication network element exports.
It will be appreciated by those skilled in the art that the practical function of each module in the synchronizing clock signals compensation arrangement shown in Fig. 7 and submodule thereof can refer to the associated description of aforementioned synchronization compensated clock signal method and understands.Module in synchronizing clock signals compensation arrangement shown in Fig. 7 and the function of submodule thereof realize by the program run on processor, also realize by concrete logical circuit.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (16)
1. a synchronizing clock signals compensation method, is characterized in that, described method comprises:
When determining communication network element not get reference clock signal and meet compensated clock signal condition, according to the clock signal determination compensating parameter that the aging function of matching is in advance described communication network element, and according to described compensating parameter, the clock signal that crystal oscillator in described communication network element exports is compensated.
2. synchronizing clock signals compensation method according to claim 1, is characterized in that, described method also comprises:
The compensating parameter of the clock signal determination current time that crystal oscillator exports in the reference clock signal got according to communication network element and described communication network element;
Determined all compensating parameters in statistics preset period of time, and the aging function of crystal oscillator in communication network element according to all compensating parameter matchings determined in described preset period of time.
3. synchronizing clock signals compensation method according to claim 1, is characterized in that, described reference clock signal is GPS (Global Position System) GNSS clock signal or Beidou satellite navigation system BDS clock signal or global position system GPS clock signal.
4. synchronizing clock signals compensation method according to claim 2, is characterized in that, the compensating parameter of the clock signal determination current time that crystal oscillator exports in the described reference clock signal that gets according to communication network element and described communication network element, comprising:
The phase difference of the clock signal that crystal oscillator exports in more described reference clock signal and described communication network element, and described phase difference is converted to corresponding digital control voltage signal;
Described digital control voltage signal is converted to corresponding analog control voltage signal, and using described analog control voltage signal as described compensating parameter.
5. the synchronizing clock signals compensation method according to claim 2 or 4, it is characterized in that, in the described reference clock signal that gets according to communication network element and described communication network element the clock signal determination current time that crystal oscillator exports compensating parameter after, described method also comprises:
According to described compensating parameter, the clock signal that crystal oscillator in described communication network element exports is compensated.
6. synchronizing clock signals compensation method according to claim 2, is characterized in that, the aging function of crystal oscillator in described communication network element according to all compensating parameter matchings determined in described preset period of time, comprising:
According to all compensating parameters determined in the preset period of time before current time, adopt the aging function of crystal oscillator in communication network element described in power function fitting.
7. synchronizing clock signals compensation method according to claim 2, is characterized in that, described in determine that communication network element does not get reference clock signal and meets compensated clock signal condition, comprising:
When determining that described communication network element does not get reference clock signal, when the quantity of determined all compensating parameters reaches default value in detection preset period of time, be defined as described communication network element and meet compensated clock signal condition.
8. synchronizing clock signals compensation method according to claim 1, it is characterized in that, the aging function of described basis matching is in advance the clock signal determination compensating parameter of described communication network element, and according to described compensating parameter, the clock signal that crystal oscillator in described communication network element exports is compensated, comprising:
According to the compensating parameter of the clock signal of the described communication network element of the aging function determination current time of current time value and described matching in advance;
The time corresponding to number of times, each compensation that compensates and the compensation subparameter corresponding to each compensation is determined according to the compensating parameter of the clock signal of the described communication network element of described current time;
Time corresponding to described compensation number of times, each compensation and the compensation subparameter corresponding to each compensation carry out at least single compensation to the clock signal that crystal oscillator in described communication network element exports.
9. a synchronizing clock signals compensation arrangement, is characterized in that, described device comprises: the first determination module and compensating module; Wherein,
Described first determination module, when meeting compensated clock signal condition for determining communication network element not get reference clock signal, is the clock signal determination compensating parameter of described communication network element according to the aging function of matching in advance;
Described compensating module, for compensating the clock signal that crystal oscillator in described communication network element exports according to described compensating parameter.
10. synchronizing clock signals compensation arrangement according to claim 9, is characterized in that, described device also comprises: the second determination module and fitting module; Wherein,
Described second determination module, for the compensating parameter of the clock signal determination current time that crystal oscillator in the reference clock signal that gets according to communication network element and described communication network element exports;
Described fitting module, for adding up determined all compensating parameters in preset period of time, and the aging function of crystal oscillator in communication network element according to all compensating parameter matchings determined in described preset period of time.
11. synchronizing clock signals compensation arrangements according to claim 9, is characterized in that, described reference clock signal is GNSS clock signal or BDS clock signal or GPS clock signal.
12. synchronizing clock signals compensation arrangements according to claim 10, is characterized in that, described second determination module comprises: phase demodulation submodule, the first transform subblock and the second transform subblock; Wherein,
Described phase demodulation submodule, for the phase difference of the clock signal that crystal oscillator in more described reference clock signal and described communication network element exports;
Described first transform subblock, for being converted to corresponding digital control voltage signal by described phase difference;
Described second transform subblock, for being converted to corresponding analog control voltage signal, and using described analog control voltage signal as described compensating parameter by described digital control voltage signal.
13. synchronizing clock signals compensation arrangements according to claim 10 or 12, it is characterized in that, described compensating module, after the compensating parameter of the clock signal determination current time also exported for crystal oscillator in the reference clock signal that gets according to communication network element at described second determination module and described communication network element, the compensating parameter according to described current time compensates the clock signal that crystal oscillator in described communication network element exports.
14. synchronizing clock signals compensation arrangements according to claim 10, it is characterized in that, described fitting module, also for according to all compensating parameters determined in the preset period of time before current time, adopts the aging function of crystal oscillator in communication network element described in power function fitting.
15. synchronizing clock signals compensation arrangements according to claim 10, it is characterized in that, described first determination module comprises detection sub-module, during for determining that communication network element does not get reference clock signal, when the quantity of determined all compensating parameters reaches default value in detection preset period of time, be defined as described communication network element and meet compensated clock signal condition.
16. synchronizing clock signals compensation arrangements according to claim 9, is characterized in that, described first determination module also comprises first and determines submodule; Described compensating module comprises: second determines submodule and compensate submodule; Wherein,
Described first determines submodule, for the compensating parameter of the clock signal of communication network element according to the aging function determination current time of current time value and described matching in advance;
Described second determines submodule, for determining the time corresponding to number of times, each compensation that compensates and the compensation subparameter corresponding to each compensation according to described compensating parameter;
Described compensation submodule, carries out at least single compensation for the time corresponding to described compensation number of times, each compensation and the compensation subparameter corresponding to each compensation to the clock signal that crystal oscillator in described communication network element exports.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310351542.9A CN104378109A (en) | 2013-08-13 | 2013-08-13 | Synchronous clock signal compensation method and device |
| PCT/CN2013/090379 WO2014161360A1 (en) | 2013-08-13 | 2013-12-24 | Method, device, and computer storage medium for compensating for synchronization clock signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310351542.9A CN104378109A (en) | 2013-08-13 | 2013-08-13 | Synchronous clock signal compensation method and device |
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| CN104378109A true CN104378109A (en) | 2015-02-25 |
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| CN201310351542.9A Withdrawn CN104378109A (en) | 2013-08-13 | 2013-08-13 | Synchronous clock signal compensation method and device |
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| CN (1) | CN104378109A (en) |
| WO (1) | WO2014161360A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106936425A (en) * | 2015-12-29 | 2017-07-07 | 普天信息技术有限公司 | Clock frequency keeping method and device |
| CN107566105A (en) * | 2017-08-07 | 2018-01-09 | 南方电网科学研究院有限责任公司 | Time synchronism equipment compensation method, device, storage medium and its computer equipment |
| CN112969229A (en) * | 2021-01-28 | 2021-06-15 | 新华三技术有限公司合肥分公司 | Clock correction method and device and network equipment |
| CN113325919A (en) * | 2021-06-24 | 2021-08-31 | 新华三技术有限公司 | Clock compensation method and device |
| CN115002893A (en) * | 2022-07-01 | 2022-09-02 | 白盒子(上海)微电子科技有限公司 | Method and device for improving clock holding capacity of base station based on digital phase-locked loop |
| CN115486059A (en) * | 2020-11-19 | 2022-12-16 | 西安诺瓦星云科技股份有限公司 | Signal processing method, device, equipment, storage medium and computer equipment |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110309593B (en) * | 2019-07-01 | 2022-06-28 | 广东大普通信技术股份有限公司 | Device and method for predicting aging rate of constant-temperature crystal oscillator |
| CN114866033B (en) * | 2022-05-05 | 2023-01-13 | 深圳市金科泰通信设备有限公司 | Crystal oscillator aging compensation method and system, terminal device and storage medium |
| CN117150988B (en) * | 2023-11-01 | 2024-04-02 | 成都北中网芯科技有限公司 | High-precision clock generation method, device, equipment and medium for verification environment |
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| WO2009062446A1 (en) * | 2007-11-12 | 2009-05-22 | Huawei Technologies Co., Ltd. | Temperature compensation method, device and access point |
| CN101645718A (en) * | 2008-08-07 | 2010-02-10 | 中兴通讯股份有限公司 | Method and device for holding clock |
| CN102096440A (en) * | 2010-12-31 | 2011-06-15 | 中国电子科技集团公司第五十四研究所 | Method for keeping high precision of real time clock circuit |
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- 2013-08-13 CN CN201310351542.9A patent/CN104378109A/en not_active Withdrawn
- 2013-12-24 WO PCT/CN2013/090379 patent/WO2014161360A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2009062446A1 (en) * | 2007-11-12 | 2009-05-22 | Huawei Technologies Co., Ltd. | Temperature compensation method, device and access point |
| CN101645718A (en) * | 2008-08-07 | 2010-02-10 | 中兴通讯股份有限公司 | Method and device for holding clock |
| CN102096440A (en) * | 2010-12-31 | 2011-06-15 | 中国电子科技集团公司第五十四研究所 | Method for keeping high precision of real time clock circuit |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106936425A (en) * | 2015-12-29 | 2017-07-07 | 普天信息技术有限公司 | Clock frequency keeping method and device |
| CN106936425B (en) * | 2015-12-29 | 2020-10-02 | 普天信息技术有限公司 | Clock frequency holding method and device |
| CN107566105A (en) * | 2017-08-07 | 2018-01-09 | 南方电网科学研究院有限责任公司 | Time synchronism equipment compensation method, device, storage medium and its computer equipment |
| CN107566105B (en) * | 2017-08-07 | 2020-02-18 | 南方电网科学研究院有限责任公司 | Time synchronization equipment compensation method, device, storage medium and computer equipment thereof |
| CN115486059A (en) * | 2020-11-19 | 2022-12-16 | 西安诺瓦星云科技股份有限公司 | Signal processing method, device, equipment, storage medium and computer equipment |
| CN112969229A (en) * | 2021-01-28 | 2021-06-15 | 新华三技术有限公司合肥分公司 | Clock correction method and device and network equipment |
| CN112969229B (en) * | 2021-01-28 | 2022-02-22 | 新华三技术有限公司合肥分公司 | Clock correction method and device and network equipment |
| CN113325919A (en) * | 2021-06-24 | 2021-08-31 | 新华三技术有限公司 | Clock compensation method and device |
| CN113325919B (en) * | 2021-06-24 | 2024-01-23 | 新华三技术有限公司 | Clock compensation method and device |
| CN115002893A (en) * | 2022-07-01 | 2022-09-02 | 白盒子(上海)微电子科技有限公司 | Method and device for improving clock holding capacity of base station based on digital phase-locked loop |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014161360A1 (en) | 2014-10-09 |
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