CN109525347A - Method for synchronizing time and device - Google Patents
Method for synchronizing time and device Download PDFInfo
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- CN109525347A CN109525347A CN201710852611.2A CN201710852611A CN109525347A CN 109525347 A CN109525347 A CN 109525347A CN 201710852611 A CN201710852611 A CN 201710852611A CN 109525347 A CN109525347 A CN 109525347A
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- time point
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- 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
Abstract
The present invention proposes a kind of method for synchronizing time and device, wherein method includes: the timestamp information that the first system server receives other second system server broadcasts in server group, and timestamp information includes: sending time section；According to the timestamp information of second system server and the receiving time point of the first system server receiving time stamp information, the time interval in preset time point second system server is determined, and then determine coincidence section and its weighted value of each time interval；And then it determines in the standard time section of preset time point the first system server；Adjustment is synchronized to the time of the first system server according to standard time section, so as to according to the time interval of each second system server of preset time point, determine the standard time section of the first system server, adjustment is synchronized to the first system server, the clock error and transmission link mistake that can tolerate part system server, improve the reliability of time synchronization.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of method for synchronizing time and device.
Background technique
Currently, including a primary server and multiple subsystems, the method for synchronizing time of subsystem in Time Service System
It is to receive the timestamp information that primary server is sent, timestamp information is parsed, sending time is obtained, when according to sending
Between adjust oneself time, the time synchronization of each subsystem in service system of holding time.
However, in the prior art, the time synchronization of each subsystem depends on primary server, it is wrong in primary server clock
When the error occurs, subsystem is difficult to obtain the correct time, reduces the reliability of time synchronization for mistake or transmission link.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, the first purpose of this invention is to propose a kind of method for synchronizing time, to improve the reliable of time synchronization
Property.
Second object of the present invention is to propose a kind of time synchronism apparatus.
Third object of the present invention is to propose a kind of terminal device.
Fourth object of the present invention is to propose a kind of computer readable storage medium.
In order to achieve the above object, first aspect present invention embodiment proposes a kind of method for synchronizing time, comprising:
The first system server receive server group in addition to the first system server other second system servers
The timestamp information of broadcast, the timestamp information include: sending time section；The sending time section is according to described the
Two system server send the timestamp information sending time point and systematic error determined by time interval；
For each second system server, according to the timestamp information of the second system server and described
One system server receives the receiving time point of the timestamp information, determines the second system server described in preset time point
Time interval；
According to the time interval in each second system server of preset time point, the weight of each time interval is determined
Close section and the weighted value for being overlapped section；
According to each weighted value for being overlapped section, the standard time of the first system server described in preset time point is determined
Section；
According to the standard time section of the first system server described in preset time point to the first system server
Time synchronize adjustment.
Further, the basis determines each in the time interval of each second system server of preset time point
A time interval is overlapped section and the weighted value for being overlapped section, comprising:
According to the time interval in each second system server of preset time point, the weight of each time interval is determined
Close section and the coincidence number for being overlapped section；
The weighted value for being overlapped section is determined according to the coincidence number for being overlapped section.
Further, described according to each weighted value for being overlapped section, determine the clothes of the first system described in preset time point
The standard time section of business device, comprising:
Each weighted value for being overlapped section is compared with preset filtering weighted value, corresponding weighted value is obtained and is greater than
The coincidence section of the filtering weighted value；
The coincidence section that corresponding weighted value is greater than the filtering weighted value is combined, is obtained in preset time point institute
State the standard time section of the first system server.
Further, described that each weighted value for being overlapped section is compared with preset filtering weighted value, acquisition pair
The weighted value answered is greater than before the coincidence section of the filtering weighted value, further includes:
It is horizontal according to the quantity of system server in the server group and preset Error Tolerance, determine the mistake
Filter weighted value.
Further, it is described according to the standard time section of the first system server described in preset time point to described
The time of one system server synchronizes adjustment, comprising:
It is modified, is obtained in place according to time interval of the standard time section to each second system server
The time interval after the amendment of each second system server in the standard time section；
According to time interval after the amendment of each second system server, calculate after the amendment in time interval
Heart time point；
It is determined as the average value of the center time point of each second system server described in the preset time point
The standard time point of one system server；
According to the standard time point of the first system server described in preset time point to the first system server
Time synchronizes adjustment.
Further, it is described according to the standard time point of the first system server described in preset time point to described first
The time of system server synchronizes adjustment, comprising:
Calculate the difference between the preset time point and standard time point；
Adjustment is synchronized according to time of the difference to the first system server.
The method for synchronizing time of the embodiment of the present invention is received by the first system server and removes the first system in server group
The timestamp information of other outer second system server broadcasts of server, timestamp information includes: sending time section；When transmission
Between section be according to second system server sending time stab information sending time point and systematic error determined by the time
Section；For each second system server, according to the timestamp information of second system server and the first system server
Receiving time stabs the receiving time point of information, determines the time interval in preset time point second system server；According to pre-
If the time interval of time point each second system server, determines the coincidence section of each time interval and be overlapped section
Weighted value；According to each weighted value for being overlapped section, determine in the standard time section of preset time point the first system server；
Tune is synchronized to the time of the first system server according in the standard time section of preset time point the first system server
It is whole, so as to determine the mark of the first system server according to the time interval of each second system server of preset time point
Quasi- time interval synchronizes adjustment to the time of the first system server, can tolerate part second system server when
Clock mistake and transmission link mistake, improve the reliability of time synchronization.
In order to achieve the above object, second aspect of the present invention embodiment proposes a kind of time synchronism apparatus, comprising:
Receiving module, for receiving, other second system servers are wide in addition to the first system server in server group
The timestamp information broadcast, the timestamp information include: sending time section；The sending time section is according to described second
System server send the timestamp information sending time point and systematic error determined by time interval；
Determining module is believed for being directed to each second system server according to the timestamp of the second system server
Breath and the first system server receive the receiving time point of the timestamp information, determine described in the preset time point
The time interval of second system server；
The determining module is also used to according to the time interval in each second system server of preset time point,
Determine each time interval is overlapped section and the weighted value for being overlapped section；
The determining module is also used to be determined first described in the preset time point according to each weighted value for being overlapped section
The standard time section of system server；
Module is adjusted, for the standard time section according to the first system server described in preset time point to described the
The time of one system server synchronizes adjustment.
Further, the determining module is specifically used for,
According to the time interval in each second system server of preset time point, the weight of each time interval is determined
Close section and the coincidence number for being overlapped section；
The weighted value for being overlapped section is determined according to the coincidence number for being overlapped section.
Further, the determining module is specifically used for,
Each weighted value for being overlapped section is compared with preset filtering weighted value, corresponding weighted value is obtained and is greater than
The coincidence section of the filtering weighted value；
The coincidence section that corresponding weighted value is greater than the filtering weighted value is combined, is obtained in preset time point institute
State the standard time section of the first system server.
Further, the determining module is specifically also used to,
It is horizontal according to the quantity of system server in the server group and preset Error Tolerance, determine the mistake
Filter weighted value.
Further, the adjustment module includes:
Amending unit, for according to the standard time section to the time interval of each second system server into
Row amendment, obtains time interval after the amendment for each second system server being located in the standard time section；
Computing unit calculates the amendment for time interval after the amendment according to each second system server
The center time point of time interval afterwards；
Determination unit, for being determined as the average value of the center time point of each second system server pre-
If the standard time point of the first system server described in time point；
Adjustment unit, for the standard time point according to the first system server described in preset time point to described first
The time of system server synchronizes adjustment.
Further, the adjustment unit is specifically used for,
Calculate the difference between the preset time point and standard time point；
Adjustment is synchronized according to time of the difference to the first system server.
The time synchronism apparatus of the embodiment of the present invention is received by the first system server and removes the first system in server group
The timestamp information of other outer second system server broadcasts of server, timestamp information includes: sending time section；When transmission
Between section be according to second system server sending time stab information sending time point and systematic error determined by the time
Section；For each second system server, according to the timestamp information of second system server and the first system server
Receiving time stabs the receiving time point of information, determines the time interval in preset time point second system server；According to pre-
If the time interval of time point each second system server, determines the coincidence section of each time interval and be overlapped section
Weighted value；According to each weighted value for being overlapped section, determine in the standard time section of preset time point the first system server；
Tune is synchronized to the time of the first system server according in the standard time section of preset time point the first system server
It is whole, so as to determine the mark of the first system server according to the time interval of each second system server of preset time point
Quasi- time interval synchronizes adjustment to the time of the first system server, can tolerate part second system server when
Clock mistake and transmission link mistake, improve the reliability of time synchronization.
In order to achieve the above object, third aspect present invention embodiment proposes a kind of terminal device, including memory, processor
And the computer program that can be run on a memory and on a processor is stored, when the processor executes described program, realize
Method for synchronizing time as described in relation to the first aspect.
To achieve the goals above, fourth aspect present invention embodiment proposes a kind of computer readable storage medium,
On be stored with computer program, when which is executed by processor realize first aspect described in method for synchronizing time.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is a kind of flow diagram of method for synchronizing time provided by the embodiment of the present invention；
Fig. 2 is weight-interval graph schematic diagram；
Fig. 3 is the flow diagram of another kind method for synchronizing time provided by the embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of time synchronism apparatus provided by the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another kind time synchronism apparatus provided by the embodiment of the present invention；
Fig. 6 is the schematic diagram of terminal device provided by the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the method for synchronizing time and device of the embodiment of the present invention are described.
Fig. 1 is a kind of flow diagram of method for synchronizing time provided by the embodiment of the present invention.
As shown in Figure 1, the method for synchronizing time the following steps are included:
Step 101, other second systems take in addition to the first system server in the first system server reception server group
The timestamp information of business device broadcast, timestamp information includes: sending time section；The sending time section is according to the second system
Time interval determined by the sending time point and systematic error of server sending time of uniting stamp information.
The executing subject of method for synchronizing time provided in this embodiment is time synchronism apparatus, and time synchronism apparatus specifically may be used
Think that any one server or other equipment in server group for example can communicate and carry out the terminal of time synchronization
Deng.Time synchronism apparatus can also be the software or hardware on the server.Wherein, systematic error refers to second system
The systematic error of server itself.
In the present embodiment, each system server in server group can be broadcast periodically timestamp information, such as
It every 1 second, every 2 seconds etc., is not specifically limited herein, can according to need and set.It needs to be illustrated, server group
In each system server can put at the same time broadcast time stamp information.For example, each system server can be
13 points of 0 second 0 minute broadcast times stab information, at this time the sending time point phase of the first system server and each second system server
Together, different only systematic error.But since the time of the first system server and each second system server may be different
Step, therefore, the first system server and each second system server are not necessarily and stab information in same time broadcast time.
In the present embodiment, sending time section is specifically as follows [t- Δ t, t+ Δ t].
Wherein, t is the sending time point that second system server sending time stabs information；Δ t is second system server
Systematic error.
Step 102, for each second system server, according to the timestamp information of second system server, Yi Ji
One system server receiving time stabs the receiving time point of information, determines the time zone in preset time point second system server
Between.
In the present embodiment, step 102 may include: for each second system server, according to second system server
Timestamp information and the first system server receiving time stamp information receiving time point, determine in receiving time point the
The time interval of two system server；According to the time interval in receiving time point second system server, determine when default
Between put second system server time interval.
Wherein, time synchronism apparatus can first take according to the sending time of second system server point and the first system
The receiving time point of device receiving time of being engaged in stamp information, determines the current time in receiving time point second system server；According to
In the current time of receiving time point second system server and the systematic error of second system server, determine when receiving
Between put second system server time interval.
It remarks additionally, time synchronism apparatus is calculated in the current of receiving time point second system server
The algorithm of time, it is identical as the algorithm that subsystem in the prior art adjusts oneself time according to sending time, it can refer to existing
Subsystem adjusts the algorithm of oneself time according to sending time in technology, no longer elaborates herein.
In the present embodiment, time synchronism apparatus can stab the time point of information according to second system server sending time,
And the possible time error between the first system server and second system server, a time window is determined, at this
The timestamp information that second system server is sent is received in time window.And for receiving time point be located at the time window it
Outer timestamp information indicates the time between the corresponding second system server of the timestamp information and the first system server
Error is too big or the timestamp information is the timestamp information of mistake, therefore does not receive the timestamp information, or receive it
After be not used in carry out time synchronizing, to improve the accuracy of time synchronization.
Step 103, according to the time interval in each second system server of preset time point, each time interval is determined
Be overlapped section and be overlapped section weighted value.
Wherein, the process that time synchronism apparatus executes step 103 is specifically as follows, according in preset time point each second
The time interval of system server determines the coincidence number for being overlapped section and being overlapped section of each time interval；According to weight
The number that is overlapped for closing section determines the weighted value for being overlapped section.Wherein, the weighted value for being overlapped section can be the weight in coincidence section
Close number.
In the present embodiment, time synchronism apparatus can determine the weight of each time interval by building weight-interval graph
The weighted value for closing section and being overlapped section.As shown in Fig. 2, being weight-interval graph schematic diagram.In Fig. 2, in server group
Including 7 nodes, wherein there is 6 second system servers to the first system server broadcast timestamp information, 6 second systems
Server is respectively PE1, PE2, PE3, PE4, PE5 and PE6.Wherein, viIn the time interval for indicating second system server
Center time point, wherein i is equal to 1,2,3,4,5 or 6；[a1, b5] is center time point v1Corresponding time interval；[a2,
B4] it is center time point v6Corresponding time interval；[a4, b1] is center time point v5Corresponding time interval；[a5, b3] is
Center time point v4Corresponding time interval.In Fig. 2, [a1, a2] is center time point v1One weight of corresponding time interval
Section is closed, the coincidence number in the coincidence section is 1；[a2, a3] is center time point v1Corresponding time interval and centre time
Point v6One coincidence section of corresponding time interval, the coincidence number in the coincidence section are 2；[a3, a4] is center time point v1
Corresponding time interval, center time point v6Corresponding time interval and center time point v3One of corresponding time interval
It is overlapped section, the coincidence number in the coincidence section is 3；Others are overlapped section and its are overlapped number and obtain by a similar method
, it is no longer described in detail herein.
Step 104, according to each weighted value for being overlapped section, the standard in preset time point the first system server is determined
Time interval.
Wherein, time synchronism apparatus execute step 104 process be specifically as follows, by it is each be overlapped section weighted value with
Preset filtering weighted value is compared, and obtains the coincidence section that corresponding weighted value is greater than filtering weighted value；By corresponding power
The coincidence section that weight values are greater than filtering weighted value is combined, and obtains the standard time in preset time point the first system server
Section.
For example, being illustrated in Fig. 2 with preset filtering weighted value for 3, the horizontal line in Fig. 2 above abscissa is indicated
Preset filtering weighted value has 3 greater than the coincidence section of filtering weighted value then in Fig. 2, respectively [a4, a5], [a5,
b5],[b5,b4]；These three weighted values for being overlapped section are respectively 4,5,4.These three coincidence sections are combined, area is obtained
Between [a4, b4], which is determined as in the standard time section of preset time point the first system server.
In addition, it is also necessary to be illustrated, the method for determination of preset filtering weighted value is specifically as follows, according to service
The quantity of system server and preset Error Tolerance are horizontal in device group, determine filtering weighted value.
Wherein, Error Tolerance level specifically can be according to the first system server in server group and second system service
The total quantity of device is determined.Filter the difference that weighted value can be total quantity and Error Tolerance level.For example, fault tolerant
Horizontal half, one third or other ratios that can be less than or equal to total quantity of degree.The Error Tolerance used in Fig. 2
Level is specially 3.
In the present embodiment, the setting of Error Tolerance level, is the method for synchronizing time in order to enable the present embodiment, in portion
When dividing timestamp information errors, also can reliably it execute.Error Tolerance is horizontal, indicates the method for synchronizing time of the present embodiment
The maximum number of errors that can be tolerated.Such as in Fig. 2, center time point v2The letter of timestamp represented by corresponding time interval
Breath is wrong timestamp information.
Step 105, according in the standard time section of preset time point the first system server to the first system server
Time synchronize adjustment.
In the present embodiment, time synchronism apparatus can be right according to the gap between preset time point and standard time section
The time of the first system server synchronizes adjustment.
In addition, it is also necessary to be illustrated, in above-described embodiment, only by taking a cycle as an example, in server group
The time synchronization process of the first system server be illustrated, the time synchronization of other second system servers in server group
Process is similar with the time synchronization process of the first system server, can be with reference to the first system server in embodiment illustrated in fig. 1
Time synchronization process.And other periods are directed to, it can also be with reference to the time synchronization of each system server in the said one period
Process executes the time synchronization process of system server in other each periods.For other second systems in the said one period
The time synchronization process of server and in other periods each system server time synchronization process, no longer carry out herein detailed
Thin description.
The method for synchronizing time of the embodiment of the present invention is received by the first system server and removes the first system in server group
The timestamp information of other outer second system server broadcasts of server, timestamp information includes: sending time section；When transmission
Between section be according to second system server sending time stab information sending time point and systematic error determined by the time
Section；For each second system server, according to the timestamp information of second system server and the first system server
Receiving time stabs the receiving time point of information, determines the time interval in preset time point second system server；According to pre-
If the time interval of time point each second system server, determines the coincidence section of each time interval and be overlapped section
Weighted value；According to each weighted value for being overlapped section, determine in the standard time section of preset time point the first system server；
Tune is synchronized to the time of the first system server according in the standard time section of preset time point the first system server
It is whole, so as to determine the mark of the first system server according to the time interval of each second system server of preset time point
Quasi- time interval synchronizes adjustment to the time of the first system server, can tolerate part second system server when
Clock mistake and transmission link mistake, improve the reliability of time synchronization.
Fig. 3 is the flow diagram of another method for synchronizing time provided in this embodiment, on the basis of a upper embodiment
On, step 105 can specifically include following steps:
Step 1051 is modified the time interval of each second system server according to standard time section, obtains
Time interval after the amendment of each second system server in standard time section.
For example, being [a4, b4] in the standard time section of preset time point the first system server, according to mark in Fig. 2
Quasi- time interval is to center time point v1Time interval is after the amendment that corresponding time interval [a1, b5] obtains after being modified
[a4,b5]；According to standard time section to center time point v6What corresponding time interval [a2, b4] obtained after being modified repairs
Time interval is [a4, b4] after just；According to standard time section to center time point v5Corresponding time interval [a4, b1] carries out
Time interval is [a4, b4] after the amendment obtained after amendment.The makeover process class of other center time points corresponding time interval
Seemingly, it is no longer described in detail herein.
Step 1052, according to time interval after the amendment of each second system server, calculate time interval after amendment
Center time point.
For example, in Fig. 2, center time point v1The center time point of time interval [a4, b5] is v after corresponding amendment1′；
Center time point v6The center time point of time interval [a4, b4] is v after corresponding amendment6′；Center time point v5Corresponding amendment
The center time point of time interval [a4, b4] is v afterwards5', the center time point of time interval is similar after other amendments.
Step 1053, by the average value of the center time point of each second system server, be determined as in preset time point
The standard time point of the first system server.
Step 1054, according to preset time point the first system server standard time point to the first system server
Time synchronizes adjustment.
Specifically, the process that time synchronism apparatus executes step 1054 is specifically as follows, preset time point and standard are calculated
Difference between time point；Adjustment is synchronized according to time of the difference to the first system server.
For example, if the difference between preset time point and standard time point is positive value, then it represents that the first system server
Clock is too fast, then the clock of the first system server is slowed down the difference；If between preset time point and standard time point
Difference is negative value, then it represents that the clock of the first system server is excessively slow, then the clock of the first system server is tuned up the difference
The absolute value of value.
The method for synchronizing time of the embodiment of the present invention is received by the first system server and removes the first system in server group
The timestamp information of other outer second system server broadcasts of server, timestamp information includes: sending time section；When transmission
Between section be according to second system server sending time stab information sending time point and systematic error determined by the time
Section；For each second system server, according to the timestamp information of second system server and the first system server
Receiving time stabs the receiving time point of information, determines the time interval in preset time point second system server；According to pre-
If the time interval of time point each second system server, determines the coincidence section of each time interval and be overlapped section
Weighted value；According to each weighted value for being overlapped section, determine in the standard time section of preset time point the first system server；
The time interval of each second system server is modified according to standard time section, obtains being located in standard time section
Each second system server amendment after time interval；According to time interval after the amendment of each second system server,
Calculate the center time point of time interval after correcting；By the average value of the center time point of each second system server, determine
For in the standard time point of preset time point the first system server；According to the standard in preset time point the first system server
Time point synchronizes adjustment to the time of the first system server, so as to be taken according to each second system of preset time point
The time interval of business device, determines the standard time section of the first system server, carries out to the time of the first system server same
Successive step can tolerate the clock error and transmission link mistake of part second system server, improve time synchronization
Reliability.
In order to realize above-described embodiment, the present invention also proposes a kind of time synchronism apparatus.
Fig. 4 is a kind of structural schematic diagram of time synchronism apparatus provided in an embodiment of the present invention.As shown in figure 4, the time
Synchronizing device includes: receiving module 41, determining module 42 and adjustment module 43.
Wherein, receiving module 41, for receiving in server group other second systems in addition to the first system server
The timestamp information of server broadcast, the timestamp information include: sending time section；According to the sending time section
The second system server send the timestamp information sending time point and systematic error determined by time interval；
Determining module 42, for being directed to each second system server, according to the timestamp of the second system server
Information and the first system server receive the receiving time point of the timestamp information, determine in preset time point institute
State the time interval of second system server；
The determining module 42 is also used to according to the time zone in each second system server of preset time point
Between, determine each time interval is overlapped section and the weighted value for being overlapped section；
The determining module 42, is also used to according to each weighted value for being overlapped section, determines described in the preset time point the
The standard time section of one system server；
Adjust module 43, for according to the standard time section of the first system server described in preset time point to described
The time of the first system server synchronizes adjustment.
Time synchronism apparatus provided in this embodiment is specifically as follows any one server in server group, Huo Zheqi
His equipment can for example communicate and carry out the terminal etc. of time synchronization.Time synchronism apparatus can also be soft on the server
Part or hardware.Wherein, systematic error refers to the systematic error of second system server itself.
In the present embodiment, each system server in server group can be broadcast periodically timestamp information, such as
It every 1 second, every 2 seconds etc., is not specifically limited herein, can according to need and set.It needs to be illustrated, server group
In each system server can put at the same time broadcast time stamp information.For example, each system server can be
13 points of 0 second 0 minute broadcast times stab information, at this time the sending time point phase of the first system server and each second system server
Together, different only systematic error.But since the time of the first system server and each second system server may be different
Step, therefore, the first system server and each second system server are not necessarily and stab information in same time broadcast time.
In the present embodiment, time synchronism apparatus can stab the time point of information according to second system server sending time,
And the possible time error between the first system server and second system server, a time window is determined, at this
The timestamp information that second system server is sent is received in time window.And for receiving time point be located at the time window it
Outer timestamp information indicates the time between the corresponding second system server of the timestamp information and the first system server
Error is too big or the timestamp information is the timestamp information of mistake, therefore does not receive the timestamp information, or receive it
After be not used in carry out time synchronizing, to improve the accuracy of time synchronization.
In the present embodiment, time synchronism apparatus can be right according to the gap between preset time point and standard time section
The time of the first system server synchronizes adjustment.
In addition, it is also necessary to be illustrated, in above-described embodiment, only by taking a cycle as an example, in server group
The time synchronization process of the first system server be illustrated, the time synchronization of other second system servers in server group
Process is similar with the time synchronization process of the first system server, can be with reference to the first system server in embodiment illustrated in fig. 1
Time synchronization process.And other periods are directed to, it can also be with reference to the time synchronization of each system server in the said one period
Process executes the time synchronization process of system server in other each periods.For other second systems in the said one period
The time synchronization process of server and in other periods each system server time synchronization process, no longer carry out herein detailed
Thin description.
Further, the determining module 42 is specifically used for,
According to the time interval in each second system server of preset time point, the weight of each time interval is determined
Close section and the coincidence number for being overlapped section；
The weighted value for being overlapped section is determined according to the coincidence number for being overlapped section.
Wherein, time synchronism apparatus can first take according to the sending time of second system server point and the first system
The receiving time point of device receiving time of being engaged in stamp information, determines the current time in receiving time point second system server；According to
In the current time of receiving time point second system server and the systematic error of second system server, determine when receiving
Between put second system server time interval.
It remarks additionally, time synchronism apparatus is calculated in the current of receiving time point second system server
The algorithm of time, it is identical as the algorithm that subsystem in the prior art adjusts oneself time according to sending time, it can refer to existing
Subsystem adjusts the algorithm of oneself time according to sending time in technology, no longer elaborates herein.
Wherein, time synchronism apparatus determines each according to the time interval in each second system server of preset time point
The process of the weighted value in the coincidence section and coincidence section of a time interval is specifically as follows, according to each in preset time point
The time interval of second system server determines the coincidence number for being overlapped section and being overlapped section of each time interval；Root
According to the weighted value for being overlapped number and determining coincidence section for being overlapped section.Wherein, the weighted value for being overlapped section can be coincidence section
Coincidence number.
Further, the determining module 42 is specifically used for,
Each weighted value for being overlapped section is compared with preset filtering weighted value, corresponding weighted value is obtained and is greater than
The coincidence section of the filtering weighted value；
The coincidence section that corresponding weighted value is greater than the filtering weighted value is combined, is obtained in preset time point institute
State the standard time section of the first system server.
Further, the determining module 42 is specifically also used to,
It is horizontal according to the quantity of system server in the server group and preset Error Tolerance, determine the mistake
Filter weighted value.
Wherein, Error Tolerance level specifically can be according to the first system server in server group and second system service
The total quantity of device is determined.Filter the difference that weighted value can be total quantity and Error Tolerance level.For example, fault tolerant
Horizontal half, one third or other ratios that can be less than or equal to total quantity of degree.The Error Tolerance used in Fig. 2
Level is specially 3.
In the present embodiment, the setting of Error Tolerance level, is the method for synchronizing time in order to enable the present embodiment, in portion
When dividing timestamp information errors, also can reliably it execute.Error Tolerance is horizontal, indicates the method for synchronizing time of the present embodiment
The maximum number of errors that can be tolerated.
The time synchronism apparatus of the embodiment of the present invention is received by the first system server and removes the first system in server group
The timestamp information of other outer second system server broadcasts of server, timestamp information includes: sending time section；When transmission
Between section be according to second system server sending time stab information sending time point and systematic error determined by the time
Section；For each second system server, according to the timestamp information of second system server and the first system server
Receiving time stabs the receiving time point of information, determines the time interval in preset time point second system server；According to pre-
If the time interval of time point each second system server, determines the coincidence section of each time interval and be overlapped section
Weighted value；According to each weighted value for being overlapped section, determine in the standard time section of preset time point the first system server；
Tune is synchronized to the time of the first system server according in the standard time section of preset time point the first system server
It is whole, so as to determine the mark of the first system server according to the time interval of each second system server of preset time point
Quasi- time interval synchronizes adjustment to the time of the first system server, can tolerate part second system server when
Clock mistake and transmission link mistake, improve the reliability of time synchronization.
Further, in conjunction with reference Fig. 5, on the basis of the embodiment shown in fig. 4, the adjustment module 43 includes:
Amending unit 431, for the time zone according to the standard time section to each second system server
Between be modified, obtain be located at the standard time section in each second system server amendment after time zone
Between；
Computing unit 432 is repaired described in calculating for time interval after the amendment according to each second system server
The center time point of time interval after just；
Determination unit 433, for being determined as the average value of the center time point of each second system server
The standard time point of the first system server described in preset time point；
Adjustment unit 434, for the standard time point according to the first system server described in preset time point to described
The time of the first system server synchronizes adjustment.
Further, the adjustment unit 434 is specifically used for,
Calculate the difference between the preset time point and standard time point；
Adjustment is synchronized according to time of the difference to the first system server.
For example, if the difference between preset time point and standard time point is positive value, then it represents that the first system server
Clock is too fast, then the clock of the first system server is slowed down the difference；If between preset time point and standard time point
Difference is negative value, then it represents that the clock of the first system server is excessively slow, then the clock of the first system server is tuned up the difference
The absolute value of value.
The time synchronism apparatus of the embodiment of the present invention is received by the first system server and removes the first system in server group
The timestamp information of other outer second system server broadcasts of server, timestamp information includes: sending time section；When transmission
Between section be according to second system server sending time stab information sending time point and systematic error determined by the time
Section；For each second system server, according to the timestamp information of second system server and the first system server
Receiving time stabs the receiving time point of information, determines the time interval in preset time point second system server；According to pre-
If the time interval of time point each second system server, determines the coincidence section of each time interval and be overlapped section
Weighted value；According to each weighted value for being overlapped section, determine in the standard time section of preset time point the first system server；
The time interval of each second system server is modified according to standard time section, obtains being located in standard time section
Each second system server amendment after time interval；According to time interval after the amendment of each second system server,
Calculate the center time point of time interval after correcting；By the average value of the center time point of each second system server, determine
For in the standard time point of preset time point the first system server；According to the standard in preset time point the first system server
Time point synchronizes adjustment to the time of the first system server, so as to be taken according to each second system of preset time point
The time interval of business device, determines the standard time section of the first system server, carries out to the time of the first system server same
Successive step can tolerate the clock error and transmission link mistake of part second system server, improve time synchronization
Reliability.
It should be noted that the aforementioned time for being also applied for the embodiment to the explanation of method for synchronizing time embodiment
Synchronizing device, details are not described herein again.
In order to realize above-described embodiment, the present invention also proposes that a kind of terminal device, Fig. 6 are end provided in an embodiment of the present invention
The structural schematic diagram of end equipment.The terminal device includes:
Memory 601, processor 602 and it is stored in the computer journey that can be run on memory 601 and on processor 602
Sequence.
Processor 602 realizes the method for synchronizing time provided in Fig. 1 or embodiment illustrated in fig. 3 when executing described program.
Further, time synchronism apparatus further include:
Communication interface 603, for the communication between memory 601 and processor 602.
Memory 601, for storing the computer program that can be run on processor 602.
Memory 601 may include high speed RAM memory, it is also possible to further include nonvolatile memory (non-
Volatile memory), a for example, at least magnetic disk storage.
Processor 602 realizes method for synchronizing time described in Fig. 1 or embodiment illustrated in fig. 3 when for executing described program.
If memory 601, processor 602 and the independent realization of communication interface 603, communication interface 603, memory 601
It can be connected with each other by bus with processor 602 and complete mutual communication.The bus can be Industry Standard Architecture
Structure (Industry Standard Architecture, referred to as ISA) bus, external equipment interconnection (Peripheral
Component, referred to as PCI) bus or extended industry-standard architecture (Extended Industry Standard
Architecture, referred to as EISA) bus etc..The bus can be divided into address bus, data/address bus, control bus etc..
Only to be indicated with a thick line in Fig. 6, it is not intended that an only bus or a type of bus convenient for indicating.
Optionally, in specific implementation, if memory 601, processor 602 and communication interface 603, it is integrated in one piece of core
On piece realizes that then memory 601, processor 602 and communication interface 603 can complete mutual communication by internal interface.
Processor 602 may be a central processing unit (Central Processing Unit, referred to as CPU), or
It is specific integrated circuit (Application Specific Integrated Circuit, referred to as ASIC), or is matched
It is set to the one or more integrated circuits for implementing the embodiment of the present invention.
In order to realize above-described embodiment, the present invention also proposes a kind of computer readable storage medium, is stored thereon with calculating
Machine program realizes method for synchronizing time described in previous embodiment when the program is executed by processor.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing custom logic function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction
The instruction fetch of row system, device or equipment and the system executed instruction) it uses, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium ", which can be, any may include, stores, communicates, propagates or pass
Defeated program is for instruction execution system, device or equipment or the dress used in conjunction with these instruction execution systems, device or equipment
It sets.The more specific example (non-exhaustive list) of computer-readable medium include the following: there is the electricity of one or more wirings
Interconnecting piece (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.Such as, if realized with hardware in another embodiment, following skill well known in the art can be used
Any one of art or their combination are realized: have for data-signal is realized the logic gates of logic function from
Logic circuit is dissipated, the specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene can compile
Journey gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, each functional unit in each embodiment of the present invention can integrate in a processing module
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..Although having been shown and retouching above
The embodiment of the present invention is stated, it is to be understood that above-described embodiment is exemplary, and should not be understood as to limit of the invention
System, those skilled in the art can be changed above-described embodiment, modify, replace and become within the scope of the invention
Type.
Claims (14)
1. a kind of method for synchronizing time characterized by comprising
The first system server receive server group in addition to the first system server other second system server broadcasts
Timestamp information, the timestamp information includes: sending time section；The sending time section is according to second system
System server send the timestamp information sending time point and systematic error determined by time interval；
For each second system server, according to the timestamp information of the second system server and first system
System server receives the receiving time point of the timestamp information, determine the second system server described in preset time point when
Between section；
According to the time interval in each second system server of preset time point, the coincidence area of each time interval is determined
Between and it is described be overlapped section weighted value；
According to each weighted value for being overlapped section, the standard time area of the first system server described in preset time point is determined
Between；
According to the first system server described in preset time point standard time section to the first system server when
Between synchronize adjustment.
2. the method according to claim 1, wherein the basis is in each second system of preset time point
The time interval of server, determine each time interval is overlapped section and the weighted value for being overlapped section, comprising:
According to the time interval in each second system server of preset time point, the coincidence area of each time interval is determined
Between and it is described be overlapped section coincidence number；
The weighted value for being overlapped section is determined according to the coincidence number for being overlapped section.
3. the method according to claim 1, wherein the weighted value according to each coincidence section, determines
The standard time section of the first system server described in preset time point, comprising:
Each weighted value for being overlapped section is compared with preset filtering weighted value, obtains corresponding weighted value greater than described
Filter the coincidence section of weighted value；
The coincidence section that corresponding weighted value is greater than the filtering weighted value is combined, obtains described in the preset time point the
The standard time section of one system server.
4. according to the method described in claim 3, it is characterized in that, described by each weighted value for being overlapped section and preset mistake
Filter weighted value is compared, and obtains corresponding weighted value and is greater than before the coincidence section of the filtering weighted value, further includes:
It is horizontal according to the quantity of system server in the server group and preset Error Tolerance, determine the filtering power
Weight values.
5. the method according to claim 1, wherein described according to the first system service described in preset time point
The standard time section of device synchronizes adjustment to the time of the first system server, comprising:
It is modified according to time interval of the standard time section to each second system server, obtains being located at institute
State time interval after the amendment of each second system server in standard time section；
According to time interval after the amendment of each second system server, when calculating the center of time interval after the amendment
Between point；
By the average value of the center time point of each second system server, it is determined as the first system described in preset time point
The standard time point of system server；
According to the standard time point of the first system server described in preset time point to the time of the first system server
Synchronize adjustment.
6. according to the method described in claim 5, it is characterized in that, described according to the first system service described in preset time point
The standard time point of device synchronizes adjustment to the time of the first system server, comprising:
Calculate the difference between the preset time point and standard time point；
Adjustment is synchronized according to time of the difference to the first system server.
7. a kind of time synchronism apparatus characterized by comprising
Receiving module, for receiving in server group other second system server broadcasts in addition to the first system server
Timestamp information, the timestamp information include: sending time section；The sending time section is according to the second system
Server send the timestamp information sending time point and systematic error determined by time interval；
Determining module, for being directed to each second system server, according to the timestamp information of the second system server, with
And the first system server receives the receiving time point of the timestamp information, determines the second system described in preset time point
The time interval of system server；
The determining module is also used to be determined according to the time interval in each second system server of preset time point
Each time interval is overlapped section and the weighted value for being overlapped section；
The determining module is also used to determine the first system described in preset time point according to each weighted value for being overlapped section
The standard time section of server；
Module is adjusted, for the standard time section according to the first system server described in preset time point to first system
The time of system server synchronizes adjustment.
8. device according to claim 7, which is characterized in that the determining module is specifically used for,
According to the time interval in each second system server of preset time point, the coincidence area of each time interval is determined
Between and it is described be overlapped section coincidence number；
The weighted value for being overlapped section is determined according to the coincidence number for being overlapped section.
9. device according to claim 7, which is characterized in that the determining module is specifically used for,
Each weighted value for being overlapped section is compared with preset filtering weighted value, obtains corresponding weighted value greater than described
Filter the coincidence section of weighted value；
The coincidence section that corresponding weighted value is greater than the filtering weighted value is combined, obtains described in the preset time point the
The standard time section of one system server.
10. device according to claim 9, which is characterized in that the determining module is specifically also used to,
It is horizontal according to the quantity of system server in the server group and preset Error Tolerance, determine the filtering power
Weight values.
11. device according to claim 7, which is characterized in that the adjustment module includes:
Amending unit, for being repaired according to time interval of the standard time section to each second system server
Just, obtain be located at the standard time section in each second system server amendment after time interval；
Computing unit, for time interval after the amendment according to each second system server, when calculating after the amendment
Between section center time point；
Determination unit, for being determined as the average value of the center time point of each second system server when default
Between put the standard time point of the first system server；
Adjustment unit, for the standard time point according to the first system server described in preset time point to the first system
The time of server synchronizes adjustment.
12. device according to claim 11, which is characterized in that the adjustment unit is specifically used for,
Calculate the difference between the preset time point and standard time point；
Adjustment is synchronized according to time of the difference to the first system server.
13. a kind of terminal device, which is characterized in that on a memory and can be in processor including memory, processor and storage
The computer program of upper operation when the processor executes described program, realizes such as the time as claimed in any one of claims 1 to 6
Synchronous method.
14. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
Such as method for synchronizing time as claimed in any one of claims 1 to 6 is realized when execution.
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