CN108882356A - The synchronous method of clock, time reference source device and clock reappear equipment - Google Patents
The synchronous method of clock, time reference source device and clock reappear equipment Download PDFInfo
- Publication number
- CN108882356A CN108882356A CN201710326300.2A CN201710326300A CN108882356A CN 108882356 A CN108882356 A CN 108882356A CN 201710326300 A CN201710326300 A CN 201710326300A CN 108882356 A CN108882356 A CN 108882356A
- Authority
- CN
- China
- Prior art keywords
- network element
- clock
- deviation
- time
- satellite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
Abstract
The invention discloses a kind of synchronous method of clock, time reference source device and clocks to reappear equipment, and this method includes：First network element determines time deviation update information for the respective network element clock deviation of predetermined satellite according to the first network element and the second network element, and sends time deviation update information to the second network element, with the clock of synchronous second network element.First network element of the invention is as time reference source device, it determines time deviation update information for the respective network element clock deviation of predetermined satellite according to the first network element and the second network element, the clock of the second network element can be corrected according to the clock deviation being calculated, clock deviation is calculated by monitoring same satellite, accurate and quickly between realization network element clock is synchronous, solves problem of the prior art.
Description
Technical field
The present invention relates to communication fields, more particularly to a kind of clock synchronous method, time reference source device and clock
Reappear equipment.
Background technique
With the continuous development of wireless 5G (the 5th third-generation mobile communication technology, the 5Generation) communication technology, future communication
To the net synchronization capability of clock synchronous network, more stringent requirements are proposed, in the recent period it has been proposed that provide positioning service using base station and want
It asks, time precision is required in ± 200ns or so, LTE-Advanced (Long Term Evolution upgrade version, Long Term
Evolution Advanced) key technology CoMP-JP (multi-point cooperative transmission processing) in require it is opposite between adjacent base station
Time precision is in ± 500ns or so；The following 5G system indoor positioning needs ns order of magnitude precision, however, tradition GPS time service precision exists
30ns or so is unable to satisfy the following 5G clock demand.
Summary of the invention
The present invention provides method, time reference source device and the clock reproduction equipment of a kind of clock synchronization, existing to solve
There is the following problem of technology：The following 5G system indoor positioning needs ns order of magnitude precision, however, tradition GPS time service precision is in 30ns
Left and right, is unable to satisfy the following 5G clock demand.
In order to solve the above technical problems, on the one hand, the present invention provides a kind of method that clock is synchronous, including：First network element
Time deviation update information is determined for the respective network element clock deviation of predetermined satellite according to first network element and the second network element, concurrently
Send the time deviation update information to second network element, to synchronize the clock of second network element.
Optionally, the first network element is true for the respective network element clock deviation of predetermined satellite according to first network element and the second network element
Drift correction of fixing time information, including：First network element determines described the according to the first local clock deviation and the second local clock deviation
The network element clock deviation of one network element and the second network element；Wherein, the described first local clock deviation is between first network element and predetermined satellite
, the described second local clock deviation is between second network element and the predetermined satellite；First network element is according to the net
First clock deviation determines the time deviation update information of the correction clock sent to second network element.
Optionally, the first network element determines first network element and the second net according to the first local clock deviation and the second local clock deviation
Before the network element clock deviation of member, further include：First network element obtains ephemeris according to measurement and navigation information determines the described first local clock
Difference；First network element receives the described second local clock deviation from the second network element.
On the other hand, a kind of method synchronous the present invention also provides clock, including：Second network element, which receives, comes from first
The time deviation update information of network element, it is synchronous to complete clock, wherein the time deviation update information is according to described first
What network element and second network element were determined for the respective network element clock deviation of predetermined satellite.
Optionally, the second network element receives the time deviation update information from the first network element, synchronous to complete clock, wraps
It includes：Second network element receives the time deviation update information for the correction clock that the first network element is determined according to network element clock deviation, the network element
Clock deviation is first network element and described second that first network element is determined according to the first local clock deviation and the second local clock deviation
Network element clock deviation between network element；Wherein, the described first local clock deviation is between first network element and predetermined satellite, described the
Two local clock deviation are between second network element and the predetermined satellite；Second network element is corrected according to the time deviation
Information adjusts local clock.
Optionally, the time deviation that the second network element receives the correction clock that the first network element is determined according to network element clock deviation corrects letter
Before breath, further include：Second network element obtains ephemeris according to measurement and navigation information determines the described second local clock deviation；It is described
Described second local clock deviation is sent to first network element by the second network element.
On the other hand, the present invention also provides a kind of time reference source devices, including：First satellite receiver, the first phase demodulation
Device, the first clock source, the first data processor；First satellite receiver receives satellite navigation signals, and defends described in parsing
Satellite almanac data in star navigation signal；First phase discriminator, measure first clock source and predetermined satellite star clock it
Between time interval；First data processor makes a reservation for according to the almanac data and the time interval are determining with described
The local clock deviation of the first pseudorange and first between satellite；Obtain the second local clock deviation of clock reproduction equipment, and according to described the
One local clock deviation and the determining clock deviation with clock reproduction equipment of the second local clock deviation, according to the clock deviation to it is described when
Clock reappears the time deviation update information that equipment sends correction clock.
Optionally, first clock source is atomic clock clock source.
Optionally, the measurement accuracy of first phase discriminator is subnanosecond grade.
On the other hand, the present invention also provides a kind of clocks to reappear equipment, including：Second satellite receiver, the second phase discriminator,
Second clock source, the second data processor；Second satellite receiver receives satellite navigation signals, and parses the satellite
Satellite almanac data in navigation signal；Second phase discriminator measures between the second clock source and predetermined satellite star clock
Time interval；Second data processor makes a reservation for defend according to the almanac data and the time interval are determining with described
The local clock deviation of the second pseudorange and second between star, and the described second local clock deviation is sent to time reference source device；It receives
Time deviation update information from the time reference source device, and according to the time deviation update information and local clock
The aging curve of frequency adjusts local clock.
Optionally, further include：External time input/output interface, receives externally input clock information, and will be internal when
Clock information is exported.
Optionally, the external time input/output interface includes at least one of：2M clock input/output port, 10M
Clock input/output port, 1588PTP interface.
On the other hand, the present invention also provides a kind of clock system, which includes：Above-mentioned time base source is set
It is standby, and, above-mentioned clock reappears equipment.
First network element of the invention is directed to predetermined satellite as time reference source device, according to the first network element and the second network element
Respective network element clock deviation determine time deviation update information, so that it may corrected according to the clock deviation being calculated the second network element when
Clock calculates clock deviation by monitoring same satellite, and accurate and quickly between realization network element clock is synchronous, solves the prior art
Following problem：The following 5G system indoor positioning needs ns order of magnitude precision, however, tradition GPS time service precision is in 30ns or so, nothing
Method meets future 5G clock demand.
Detailed description of the invention
Fig. 1 is the flow chart for the method that clock is synchronous in first embodiment of the invention；
Fig. 2 is the flow chart for the method that clock is synchronous in second embodiment of the invention；
Fig. 3 is the structural schematic diagram of time reference source device in third embodiment of the invention；
Fig. 4 is that clock differs transition detection method schematic diagram in fourth embodiment of the invention；
Fig. 5 is the networking schematic diagram of clock system in fourth embodiment of the invention；
Fig. 6 is a kind of schematic diagram of clock system in fourth embodiment of the invention；
Fig. 7 is another schematic diagram of clock system in fourth embodiment of the invention.
Specific embodiment
In order to solve the problems, such as the as follows of the prior art：The following 5G system indoor positioning needs ns order of magnitude precision, however, traditional
GPS time service precision is unable to satisfy the following 5G clock demand in 30ns or so；The present invention provides a kind of synchronous method of clock,
Time reference source device and clock reappear equipment, below in conjunction with attached drawing and embodiment, carry out further specifically to the present invention
It is bright.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, the present invention is not limited.
First embodiment of the invention provides a kind of method that clock is synchronous, and the process of this method is as shown in Figure 1, include step
Rapid S102 to S104：
S102, the first network element determine the time for the respective network element clock deviation of predetermined satellite according to the first network element and the second network element
Drift correction information.
First network element determines the network element clock of the first network element and the second network element according to the first local clock deviation and the second local clock deviation
Difference；Wherein, the first local clock deviation is between the first network element and predetermined satellite, and the second local clock deviation is that the second network element is defended with predetermined
Between star；First network element sends the time deviation update information of correction clock according to network element clock deviation to the second network element.
S104, sending time drift correction information to the second network element, with the clock of synchronous second network element.
The first network element of the embodiment of the present invention is defended as time reference source device, the first network element and the second network element for predetermined
The respective network element clock deviation of star determines time deviation update information, so that it may the second network element is corrected according to the clock deviation being calculated
Clock calculates clock deviation by monitoring same satellite, and accurate and quickly between realization network element clock is synchronous, solves existing skill
The following problem of art：The following 5G system indoor positioning needs ns order of magnitude precision, however, tradition GPS time service precision is in 30ns or so,
It is unable to satisfy the following 5G clock demand.
During realization, when the first network element determines the first network element and second according to the first local clock deviation and the second local clock deviation
Before the network element clock deviation of network element, the first network element is also needed according to the first local clock deviation is determined, when determining, the first network element is according to survey
Ephemeris and navigation information are measured to calculate the first local clock deviation.Clock deviation local for second, the second network element and the first network element class
Seemingly, the local clock deviation of itself network element can be calculated, the first network element obtains directly from the second network element.
Second embodiment of the invention provides a kind of method that clock is synchronous, and this method includes：Second network element is received from the
The time deviation update information of one network element, it is synchronous to complete clock, wherein time deviation update information be according to the first network element and
Second network element is determined for the respective network element clock deviation of predetermined satellite.
During realization, the second network element receives the time deviation update information from the first network element, same to complete clock
The detailed process of step is as shown in Fig. 2, include step S202 to S204：
S202, the time deviation that the second network element receives the correction clock that the first network element is determined according to network element clock deviation correct letter
Breath, the first network element and the second network element that network element clock deviation, which is the first network element, to be determined according to the first local clock deviation and the second local clock deviation it
Between network element clock deviation；
Wherein, the first local clock deviation is between the first network element and predetermined satellite, the second local clock deviation be the second network element with
Between predetermined satellite；
S204, the second network element adjust local clock according to time deviation update information.
Second network element of the embodiment of the present invention receives the time deviation update information from the first network element, and according to the time
Drift correction information adjusts local clock deviation, so that the clock of the second network element adjusted can be realized with the clock of the first network element
It is accurate synchronous, and then correct the second network element observation star clock, ephemeris and propagated delay equal error.When specific implementation, consider
To the problem of aging of the second network element clock, local clock deviation can be adjusted with further reference to the aging curve of local clock frequency.
The second network element receive the first network element according to network element clock deviation determine correction clock time deviation update information it
Before, the second network element obtains ephemeris according to measurement and navigation information determines the second local clock deviation, and the second local clock deviation is sent to
First network element, so that the first network element calculates the clock between network element according to the first local clock deviation of the second local clock deviation and the first network element
Difference.
Third embodiment of the invention additionally provides a kind of time reference source device, the structural representation of the equipment as shown in figure 3,
Including：
First satellite receiver 11, the first phase discriminator 12, the first clock source 13, the first data processor 14；Wherein, first
Satellite receiver 11 receives satellite navigation signals, and parses the satellite almanac data in satellite navigation signals；First phase discriminator
12, measure the time interval between the first clock source 13 and predetermined satellite star clock；First data processor 14, according to almanac data
And determining the first pseudorange and the first local clock deviation between predetermined satellite of time interval；Obtain second of clock reproduction equipment
Ground clock deviation, and according to the first local clock deviation and the determining clock deviation with clock reproduction equipment of the second local clock deviation, according to clock deviation to when
Clock reappears the time deviation update information that equipment sends correction clock.
In above-mentioned time reference source device, the first data processor is main data processing centre, determines first
Local clock deviation, and the clock deviation between clock reproduction equipment is calculated, therefore, time reference source device, which is equivalent to above-mentioned first, to be implemented
The equipment that the synchronous method of clock is realized in example, the first data processor are equivalent to the device for realizing the synchronous method of clock.
During its realization, due to being clock reference source device, the first above-mentioned clock source is set as atom
Clock clock source, atomic clock source have absolute accuracy.In order to meet the accuracy in atomic clock source, the survey of the first phase discriminator
Accuracy of measurement needs to be set as subnanosecond grade.
Based on above-mentioned clock reference source device, the present embodiment additionally provides a kind of clock reproduction equipment, with the above-mentioned time
The interaction of benchmark source device, structure is also similar to time reference source device, including：
Second satellite receiver, the second phase discriminator, second clock source, the second data processor；Wherein, the second satellite reception
Machine receives satellite navigation signals, and parses the satellite almanac data in satellite navigation signals；Second phase discriminator, when measuring second
Time interval between Zhong Yuanyu predetermined satellite star clock；Second data processor, according to almanac data and time interval determine with
The local clock deviation of the second pseudorange and second between predetermined satellite, and the second local clock deviation is sent to time reference source device；It connects
The time deviation update information from time reference source device is received, and according to time deviation update information and local clock frequency
Aging curve adjusts local clock.
The present embodiment clock reappears at the second data processor of equipment and the first data of above-mentioned time reference source device
Device is managed there are difference, the second data processor of the present embodiment clock reproduction equipment can be realized in above-mentioned second embodiment
The synchronous method of clock.
Above-mentioned clock reappears equipment：External time input/output interface, when for receiving externally input
Clock information, and internal clocking information is exported.For the external time input/output interface, include at least it
One：2M clock input/output port, 10M clock input/output port, 1588PTP interface.
When implementing the above process, usually combining above-mentioned time reference source device and above-mentioned clock reproduction equipment makes
With to realize entire interactive process, i.e., by the setting of above-mentioned two equipment in same clock system.The use of specific equipment
Details are not described herein again for interactive process.
Fourth embodiment of the invention provides a kind of method for realizing that superhigh precision clock is synchronous, the realization equipment of this method
Including the network element A as time reproduction terminal and as the network element B of clock synchronization norm resource, process includes：
(1) network element A and network element B with the surveillance program arranged while observing the multiple satellites in view in location (being not limited to can
Depending on the visual medium such as satellite, including broadcast, TV, communication and power tower), obtain satellite clock information (such as：Ephemeris is led
Information of navigating etc.)；
(2) network element A compares local reference clock and each Satellite clock, and local clock bias information is passed through network
Send network element B to；Network element B also compares local clock and each Satellite clock, obtains deviation information.
(3) processing center of network element B, which passes through, corrects, after the observation error between amendment network element A and network element B (such as：Satellite clock
Difference, phase centre location deviation of satellite orbit deviation, ionosphere delay deviation, troposphere delay deviation, antenna etc.), it calculates
The clock jitter between network element A and network element B is obtained, then passing through network (including wired, wireless network or satellite communications net etc.) will
Clock correction information is sent to network element A.
(4) it after network element A receives Correction and Control information, according to control strategy, adjusts local clock and network element B keeps same
Step.
Above-mentioned network element A as the time reappear terminal, network element B as clock synchronization norm resource, in the following, respectively to it is above-mentioned when
Between reappear the structure of terminal and clock synchronization norm resource and be illustrated.
Clock synchronization norm resource includes following sections：Satellite receiver, superhigh precision phase discriminator, high steady time in network
Source and data processing centre.
Satellite receiver：Receive satellite navigation signals, parse satellite almanac data, measure each satellite and receiving antenna it
Between pseudorange and local clock deviation.BDS B1/B2+GPS L1/L2 frequency range is supported using bimodulus double frequency satellite receiver, is effectively improved
Ionosphere delay corrects precision, handles optimization pseudo range measurement by data smoothing.Multi-mode satellite system increases satellites in view number,
Single satellite system limitation is reduced, system performance is relatively reliable, accurate.
Superhigh precision phase discriminator：In the method measurement network converted using delay chain or clock skew high steady clock source with
Time interval between star clock, precision of phase discrimination reach sub- ns rank, guarantee that the superelevation of ns rank may be implemented in this method and device
Accuracy clock net synchronization capability.Wherein：Delay chain method is in such a way that thick, examining survey engages, first with logical internal high frequency
Clock carries out step-by-step counting and realizes a wide range of rough detection of clock skew, is then realized using logical internal addition carry delay chain
It differs small range examining to survey, the high-precision phase discriminator of Asia ns rank is realized by repeatedly measuring smooth test data.
And clock skew transformation approach is as shown in figure 4, the phase difference between CLK1 and CLK2 is detected by amplitude-phase
Device is converted to analog quantity (such as voltage, electric current etc.), then filters out high-frequency noise by low-pass filter, using high-precision
ADC is converted into digital quantity, and quantization parses clock skew, realizes superhigh precision phase discrimination function.
High steady clock source in network：High-precision, high stable row and high reliability are provided using more atomic clocks for the whole network
Clock source.
Data processing centre：Time reproduction terminal measurement data and reproduction terminal and Satellite are got by communication network
The clock deviation data of clock calculate two places clock deviation after then offsetting a reference source observation error identical with reproduction terminal using algorithm,
Information back, which will be controlled, finally by network gives reproduction terminal.
Time reappears terminal：Satellite receiver, superhigh precision phase discriminator, local clock pulses generator, processing are single
Member and external clock input/output interface.
Satellite receiver：Function is consistent with the satellite receiver of clock synchronization norm resource.
Superhigh precision phase discriminator：The time interval between local signal generator and star clock is measured, precision of phase discrimination reaches sub-
Ns rank guarantees that the superhigh precision timing synchronization performance of ns rank may be implemented in this method and device.
Local clock pulses generator：Using atomic clock or high steady constant temperature crystal, local clock is adjusted according to control instruction
Signal generator follows clock synchronization norm resource clock.
Processing unit：Ephemeris, the navigation information etc. obtained using satellite receiver, calculates reproduction terminal and star clock clock
Then pseudorange between difference and terminal and satellite transfers data to clock synchronous base source device by network.According to passback
Two places clock deviation data, Engagement Control Developing Tactics local clock pulses generator is synchronous with the holding of synchronous base source device.
External clock input/output interface：Multiple clock interface is externally provided, such as：When 2M clock input/output port, 10M
Clock input/output port and 1588PTP interface are applicable in various application occasions.
Communication network includes：Wired, radio communication network or satellite communications net.Communication network is mainly used for delivery time reproduction
The ephemeris of terminal clock data and satellite common vision, navigation information transmit clock synchronization norm resource to clock synchronization norm resource
It is sent to the control information of time reproduction terminal.When using landline network, clock synchronization norm resource and reproduction terminal it
Between enable the agreements such as PTP or 1588, calculate a reference source by 1588 algorithms and reappear the offset and delay between terminal,
Auxiliary controls algorithm regulation reproduction eventually by clock deviation data between the obtained a reference source of satellite common vision method and reproduction terminal, operation
Local clock pulses generator is held to keep network clocking synchronous.Accordingly even when under the conditions of the method for satellite common vision is not available,
It is also ensured that clock reproduction terminal is synchronous with the holding of clock reference source.
Because the present invention may be implemented the time synchronization performance of superhigh precision, network element A connect with external equipment into
When row time synchronization as, network element A can be seen to the reference time source of external equipment, pass through external clock input interface, test
The performance of other external time synchronizers.
The above process is further described with specific example with reference to the accompanying drawing.
Example 1：
As shown in Fig. 5, time reproduction terminal (network element A) of apparatus of the present invention and time base source (network element B) are seen simultaneously
Location GPS satellites in view is surveyed, ephemeris is parsed by GPS satellite receiver after GPS satellite antenna acquisition information in Fig. 6, is led
The local clock that local clock pulses generator (high stability crystal oscillator or atomic clock) generates in the information, with Fig. 6 such as boat carries out superelevation essence
Phase demodulation is spent, local zone time deviation information is then transferred to time reference by wired, cordless communication network or satellite communications net
Source device (network element B).
Simultaneously in Fig. 6 time reference source device based on the steady time source of height (such as rubidium atomic clock or the Cs atom in network
Clock), calculate the time deviation with GPS satellite navigation system.Time reference source device (network element B) gets the time by network
The time deviation for reappearing terminal (network element A), to observation star clock, ephemeris and the propagated delay etc. between reproduction terminal and a reference source
Error is modified, and then calculates the time deviation between reproduction terminal and a reference source.With time base source (network element B) for base
Standard reappears terminal (network element A) to the time by the update information of network turn around time.
After time reproduction terminal (network element A) gets time deviation update information, the aging for engaging local clock frequency is bent
Line adjusts local zone time source (network element A) according to control strategy, synchronous with time base source (network element B) holding.
Example 2：
As shown in Fig. 5, time reproduction terminal (network element A) of apparatus of the present invention and time base source (network element B) are seen simultaneously
Survey location Beidou satellites in view, in Fig. 6 big-dipper satellite antenna obtain after information by Beidou satellite receiver parse ephemeris,
The local clock that local clock pulses generator (high stability crystal oscillator or atomic clock) generates in the information, with Fig. 6 such as navigation carries out superelevation
Then local zone time deviation information is transferred to time base by wired, cordless communication network or satellite communications net by precision phase demodulation
Quasi- source device (network element B).
Simultaneously in Fig. 6 time reference source device based on the steady time source of height (such as rubidium atomic clock or the Cs atom in network
Clock), calculate the time deviation with Beidou satellite navigation system.When time reference source device (network element B) is got by network
Between reappear the time deviation of terminal (network element A), be delayed to the observation star clock between reproduction terminal and a reference source, ephemeris and propagated
Equal error is modified, and then calculates the time deviation between reproduction terminal and a reference source.It is with time base source (network element B)
Benchmark reappears terminal (network element A) to the time by the update information of network turn around time.
After time reproduction terminal (network element A) gets time deviation update information, the aging for engaging local clock frequency is bent
Line adjusts local zone time source (network element A) according to control strategy, synchronous with time base source (network element B) holding.
Example 3：
Realize that superhigh precision clock is synchronous by the way of apparent time clock broadcast tower altogether in small range region.As shown in Fig. 7, originally
Time reproduction terminal (network element A) of invention device and time base source (network element B) observe the visual clock broadcast in location simultaneously
Tower, broadcast antenna obtains and parses local clock pulses in the information, with Fig. 7 such as clock, navigation by receiver after information in Fig. 7
The local clock that generator (high stability crystal oscillator or atomic clock) generates carries out superhigh precision phase demodulation, then by local zone time deviation information
Time reference source device (network element B) is transferred to by wired, cordless communication network or satellite communications net.
Simultaneously in Fig. 7 time reference source device based on the steady time source of height (such as rubidium atomic clock or the Cs atom in network
Clock), calculate the time deviation with clock broadcast Tower System.Time reference source device (network element B) gets the time by network
The time deviation for reappearing terminal (network element A) repairs the observation path propagation delay equal error between reproduction terminal and a reference source
Just, the time deviation between reproduction terminal and a reference source is then calculated.On the basis of time base source (network element B), pass through net
The update information of network turn around time reappears terminal (network element A) to the time.
After time reproduction terminal (network element A) gets time deviation update information, the aging for engaging local clock frequency is bent
Line adjusts local zone time source (network element A) according to control strategy, synchronous with time base source (network element B) holding.
Although for illustrative purposes, the preferred embodiment of the present invention has been disclosed, those skilled in the art will recognize
It is various improve, increase and replace be also it is possible, therefore, the scope of the present invention should be not limited to the above embodiments.
Claims (10)
1. a kind of synchronous method of clock, which is characterized in that including：
First network element determines time deviation for the respective network element clock deviation of predetermined satellite according to first network element and the second network element
Update information, and the time deviation update information is sent to second network element, to synchronize the clock of second network element.
2. the method as described in claim 1, which is characterized in that the first network element is directed to according to first network element and the second network element
The respective network element clock deviation of predetermined satellite determines time deviation update information, including：
First network element determines the net of first network element and the second network element according to the first local clock deviation and the second local clock deviation
First clock deviation；Wherein, the described first local clock deviation is between first network element and predetermined satellite, and the described second local clock deviation is
Between second network element and the predetermined satellite；
First network element determines that the time deviation of the correction clock sent to second network element is repaired according to the network element clock deviation
Positive information.
3. method according to claim 2, which is characterized in that the first network element is according to the first local clock deviation and the second local clock deviation
Before the network element clock deviation for determining first network element and the second network element, further include：
First network element obtains ephemeris according to measurement and navigation information determines the described first local clock deviation；
First network element receives the described second local clock deviation from the second network element.
4. a kind of synchronous method of clock, interacts with any one of claims 1 to 3 method, which is characterized in that including：
Second network element receives the time deviation update information from the first network element, synchronous to complete clock, wherein the time is inclined
Poor update information is to be determined according to first network element and second network element for the respective network element clock deviation of predetermined satellite.
5. method as claimed in claim 4, which is characterized in that the second network element receives the time deviation amendment from the first network element
Information, it is synchronous to complete clock, including：
Second network element receives the time deviation update information for the correction clock that the first network element is determined according to network element clock deviation, described
First network element that network element clock deviation, which is first network element, to be determined according to the first local clock deviation and the second local clock deviation with it is described
Network element clock deviation between second network element；Wherein, the described first local clock deviation is institute between first network element and predetermined satellite
Stating the second local clock deviation is between second network element and the predetermined satellite；
Second network element adjusts local clock according to the time deviation update information.
6. method as claimed in claim 5, which is characterized in that it is true according to network element clock deviation that second network element receives the first network element
Before the time deviation update information of fixed correction clock, further include：
Second network element obtains ephemeris according to measurement and navigation information determines the described second local clock deviation；
Described second local clock deviation is sent to first network element by second network element.
7. a kind of time reference source device, which is characterized in that including：
First satellite receiver, the first phase discriminator, the first clock source, the first data processor；
First satellite receiver receives satellite navigation signals, and the Satellite parsed in the satellite navigation signals is counted one by one
According to；
First phase discriminator measures the time interval between first clock source and predetermined satellite star clock；
First data processor, according between the almanac data and time interval determination and the predetermined satellite
First pseudorange and the first local clock deviation；The second local clock deviation of clock reproduction equipment is obtained, and according to the described first local clock deviation
With the determining clock deviation with clock reproduction equipment of the described second local clock deviation, equipment is reappeared to the clock according to the clock deviation
Send the time deviation update information of correction clock.
8. time reference source device as claimed in claim 7, which is characterized in that first clock source is atomic clock clock
Source.
9. a kind of clock reappears equipment, which is characterized in that including：
Second satellite receiver, the second phase discriminator, second clock source, the second data processor；
Second satellite receiver receives satellite navigation signals, and the Satellite parsed in the satellite navigation signals is counted one by one
According to；
Second phase discriminator measures the time interval between the second clock source and predetermined satellite star clock；
Second data processor, according between the almanac data and time interval determination and the predetermined satellite
Second pseudorange and the second local clock deviation, and the described second local clock deviation is sent to time reference source device；It receives from described
The time deviation update information of time reference source device, and local clock is adjusted according to the time deviation update information.
10. a kind of clock system, which is characterized in that including：Time reference source device described in claim 7 or 8, with
And clock as claimed in claim 9 reappears equipment.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710326300.2A CN108882356A (en) | 2017-05-10 | 2017-05-10 | The synchronous method of clock, time reference source device and clock reappear equipment |
| PCT/CN2018/083709 WO2018205811A1 (en) | 2017-05-10 | 2018-04-19 | Clock synchronization method, time reference source device and clock reproduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710326300.2A CN108882356A (en) | 2017-05-10 | 2017-05-10 | The synchronous method of clock, time reference source device and clock reappear equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108882356A true CN108882356A (en) | 2018-11-23 |
Family
ID=64105543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710326300.2A Pending CN108882356A (en) | 2017-05-10 | 2017-05-10 | The synchronous method of clock, time reference source device and clock reappear equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108882356A (en) |
| WO (1) | WO2018205811A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020043181A1 (en) * | 2018-08-31 | 2020-03-05 | 中兴通讯股份有限公司 | Clock synchronization method and apparatus, system, storage medium, and electronic device |
| CN111711506A (en) * | 2020-06-01 | 2020-09-25 | 西安电子科技大学 | Communication system and time service method thereof |
| CN112260789A (en) * | 2020-10-20 | 2021-01-22 | 哲库科技(北京)有限公司 | Clock source system, clock synchronization system and clock synchronization method |
| CN112583469A (en) * | 2020-11-18 | 2021-03-30 | 郑州大学 | Satellite communication system clock synchronization method based on MF-TDMA system |
| CN113099466A (en) * | 2020-01-09 | 2021-07-09 | 大唐移动通信设备有限公司 | Time difference detection method and device |
| CN114415489A (en) * | 2021-12-02 | 2022-04-29 | 北京罗克维尔斯科技有限公司 | Vehicle-mounted sensor time synchronization method, device, equipment and medium |
| WO2023124403A1 (en) * | 2021-12-31 | 2023-07-06 | 华为技术有限公司 | Clock synchronization method, apparatus and system |
| WO2023124404A1 (en) * | 2021-12-30 | 2023-07-06 | 华为技术有限公司 | Precision information sending method, device, and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010148981A1 (en) * | 2009-12-30 | 2010-12-29 | 中兴通讯股份有限公司 | Method and system for implementing clock synchronization based on wireless manner |
| CN103546267A (en) * | 2013-09-25 | 2014-01-29 | 广东电网公司电力调度控制中心 | Time synchronization monitoring method and system |
| CN104199280A (en) * | 2014-09-23 | 2014-12-10 | 中国电子科技集团公司第二十九研究所 | Time synchronization error measurement method based on differential GPS (global positioning system) |
| CN105610534A (en) * | 2015-12-17 | 2016-05-25 | 北京无线电计量测试研究所 | Multi-station time synchronization method and equipment |
| CN105991205A (en) * | 2015-02-05 | 2016-10-05 | 于天泽 | Verifiable and adjustable full synchronous communication network, and implementation method thereof |
-
2017
- 2017-05-10 CN CN201710326300.2A patent/CN108882356A/en active Pending
-
2018
- 2018-04-19 WO PCT/CN2018/083709 patent/WO2018205811A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010148981A1 (en) * | 2009-12-30 | 2010-12-29 | 中兴通讯股份有限公司 | Method and system for implementing clock synchronization based on wireless manner |
| CN103546267A (en) * | 2013-09-25 | 2014-01-29 | 广东电网公司电力调度控制中心 | Time synchronization monitoring method and system |
| CN104199280A (en) * | 2014-09-23 | 2014-12-10 | 中国电子科技集团公司第二十九研究所 | Time synchronization error measurement method based on differential GPS (global positioning system) |
| CN105991205A (en) * | 2015-02-05 | 2016-10-05 | 于天泽 | Verifiable and adjustable full synchronous communication network, and implementation method thereof |
| CN105610534A (en) * | 2015-12-17 | 2016-05-25 | 北京无线电计量测试研究所 | Multi-station time synchronization method and equipment |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020043181A1 (en) * | 2018-08-31 | 2020-03-05 | 中兴通讯股份有限公司 | Clock synchronization method and apparatus, system, storage medium, and electronic device |
| CN113099466A (en) * | 2020-01-09 | 2021-07-09 | 大唐移动通信设备有限公司 | Time difference detection method and device |
| CN111711506A (en) * | 2020-06-01 | 2020-09-25 | 西安电子科技大学 | Communication system and time service method thereof |
| CN112260789A (en) * | 2020-10-20 | 2021-01-22 | 哲库科技(北京)有限公司 | Clock source system, clock synchronization system and clock synchronization method |
| CN112260789B (en) * | 2020-10-20 | 2023-08-22 | 哲库科技(北京)有限公司 | Clock source system, clock synchronization system and clock synchronization method |
| CN112583469A (en) * | 2020-11-18 | 2021-03-30 | 郑州大学 | Satellite communication system clock synchronization method based on MF-TDMA system |
| CN112583469B (en) * | 2020-11-18 | 2023-07-14 | 郑州大学 | Satellite communication system clock synchronization method based on MF-TDMA system |
| CN114415489A (en) * | 2021-12-02 | 2022-04-29 | 北京罗克维尔斯科技有限公司 | Vehicle-mounted sensor time synchronization method, device, equipment and medium |
| CN114415489B (en) * | 2021-12-02 | 2023-09-22 | 北京罗克维尔斯科技有限公司 | Time synchronization method, device, equipment and medium for vehicle-mounted sensor |
| WO2023124404A1 (en) * | 2021-12-30 | 2023-07-06 | 华为技术有限公司 | Precision information sending method, device, and system |
| WO2023124403A1 (en) * | 2021-12-31 | 2023-07-06 | 华为技术有限公司 | Clock synchronization method, apparatus and system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018205811A1 (en) | 2018-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108882356A (en) | The synchronous method of clock, time reference source device and clock reappear equipment | |
| Lewandowski et al. | GPS: Primary tool for time transfer | |
| CN106656386B (en) | A kind of local clock method of adjustment, time service method and device | |
| JPH08146166A (en) | Reference frequency generating device | |
| BR112013017960B1 (en) | Method and system for determining satellite clock corrections | |
| EP3846379A1 (en) | Clock synchronization method and apparatus, system, storage medium, and electronic device | |
| US10958249B2 (en) | Time synchronized networks of wireless nodes and the wireless nodes | |
| US11368183B2 (en) | Systems and methods for synchronizing time, frequency, and phase among a plurality of devices | |
| US20140269645A1 (en) | Wireless access point synchronization | |
| KR101822222B1 (en) | Navigation signal transmitter and navigation signal generating method | |
| JP2015206639A (en) | Time synchronization system, time generation device, and program | |
| Liang et al. | Preliminary time transfer through optical fiber at NIM | |
| CN109743776A (en) | A kind of base station networking method for synchronizing time based on GNSS | |
| JP2014206430A (en) | Radar system | |
| CN110149197A (en) | A kind of high-precise synchronization method and synchronization system for clock system | |
| Bertacco et al. | Latest improvements at INRIM time laboratory | |
| JP2016057169A (en) | Method for comparing time of clocks and method for correcting time of clock | |
| JP2005134215A (en) | System for measuring difference of signal arrival time | |
| CN103217689B (en) | PPS (pulse per second) synchronizing method under constellation mode | |
| JP2013246024A (en) | Gps module, position measuring method by gps and computer program | |
| US11316553B2 (en) | Radio frequency clocked device | |
| KR101116028B1 (en) | Measurement device on the time difference from individual GPS satellite and selectively synchronizing method thereof | |
| CN109634092B (en) | GNSS receiver-based time service method and GNSS receiver | |
| Shanhe et al. | Research of digital satellite TV differential timing method | |
| US20230254788A1 (en) | RF spectrum analyzer for TDD transmission that maintains synchronization between UL and DL with a single antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181123 |