CN108011773A - Time synchronization test method and apparatus - Google Patents
Time synchronization test method and apparatus Download PDFInfo
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- CN108011773A CN108011773A CN201610956102.XA CN201610956102A CN108011773A CN 108011773 A CN108011773 A CN 108011773A CN 201610956102 A CN201610956102 A CN 201610956102A CN 108011773 A CN108011773 A CN 108011773A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
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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
- H04J3/0685—Clock or time synchronisation in a node; Intranode synchronisation
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Abstract
The invention discloses a kind of time synchronization test method and apparatus, it is related to field of communication networks.The present invention by using with network there is the network element to be measured in the test device and network in same time source to interact, and the time of the transmitting-receiving message of test device and network element to be measured record is obtained by the request of transmission and the response of reception, so as to calculate timing tracking accuracy of the network element to be measured relative to time source, without test of manually showing up, the convenience and testing efficiency that time synchronization test is carried out to network element in network are improved.
Description
Technical field
The present invention relates to field of communication networks, more particularly to a kind of time synchronization test method and apparatus.
Background technology
At present, since the business such as LTE (Long Term Evolution, Long Term Evolution) base station passback are to synchronousness
There can be higher requirement, therefore in the bearer network construction of LTE base station passed-back traffic and service fulfillment operational process, have
The demand of time synchronization performance test.
At present, for the test of deadline net synchronization capability, the dedicated time synchronization tester table of generally use, by specialty
Carry out test in the scene that personnel carry each network element device deployment in instrument to network.Build man-hour, needed in network engineering
Carry out test paragraph by paragraph to check and accept, workload is huge, and part scene needs open work, is subject to instrument power condition of power supply, day
The factors such as gas bar part restrict, and test period is very long.And after service fulfillment, in order to realize network quality monitoring, it is necessary to again will
The existing net of time synchronization instrument access is tested, and this test is likely to result in existing business interruption, therefore in test process
Need very with caution, to cause testing efficiency low.
The content of the invention
A technical problem to be solved of the embodiment of the present invention is：It is how convenient, efficiently network element in network is carried out
Time synchronization test.
The first aspect according to embodiments of the present invention, there is provided a kind of time synchronization test method, including：Test device
Network element sending time accuracy test to be measured request into network, time precision test request include the transmission of test device record
The first time of time precision test request, wherein, test device and network have identical time source；Test device is received and treated
The time precision test response that survey grid member returns, the receiving time precision that time precision test response includes network element record to be measured are surveyed
Try the second time of request and the 3rd time of sending time accuracy test response；Test device record test device receiving time
4th time of accuracy test response；Test device is determined according to first time, the second time, the 3rd time and the 4th time
Network element to be measured relative to time source timing tracking accuracy.
In one embodiment, test device is determined according to first time, the second time, the 3rd time and the 4th time
Network element to be measured includes relative to the timing tracking accuracy of time source：Test device is by the second time and difference at the first time and the
The summation of the difference of four times and the 3rd time is as measurement circuit total delay；Test device makees the half of line delay total time
For measurement circuit average retardation；Test device is using the difference of the second time and measurement circuit average retardation as the control time；Test
Timing tracking accuracy of the device using the difference of first time and control time as network element to be measured.
In one embodiment, when time precision test request further includes test device mark and/or test device transmission
Between accuracy test ask port mark, time precision test response further include network element ID to be measured and/or network element to be measured hair
Send the mark of the port of time precision test response；Test device receives the time precision test response bag that network element to be measured returns
Include：Test device receives the end that network element to be measured is identified according to test device and/or test device sending time accuracy test is asked
The time precision test response that the mark of mouth returns；The 4th of test device record test device Receiver Precision test response message
Time includes：The mark for the port that test device is responded according to network element ID to be measured and/or network element sending time accuracy test to be measured
Know, record test device Receiver Precision tests the 4th time of response message.
In one embodiment, method further includes：Time of the test device according to each network element to be measured relative to time source
Synchronization accuracy, obtains the time synchronization performance of each network element to be measured；Test device is same according to the time between each network element to be measured
Performance is walked, time synchronization compensation is carried out to the link between each network element to be measured and/or each network element to be measured.
In one embodiment, method further includes：Test device sends network element to be measured relative to time source to network element to be measured
Timing tracking accuracy, so as to when the difference of network element to be measured and the timing tracking accuracy in the time synchronization source of network element to be measured be more than it is pre-
If during value, network element to be measured is using test device as time synchronization source.
In one embodiment, network returns bearer network for base station, and/or, the time source of test device and network is
High precision clock server with GPS time synchronizing information.
Second aspect according to embodiments of the present invention, there is provided a kind of time synchronization test device, including：Test request is sent out
Module is sent, for the network element sending time accuracy test to be measured request into network, time precision test request includes test and fills
The first time of the sending time accuracy test request of record is put, wherein, test device and network have identical time source；Survey
Examination response receiving module, tests response, time precision test response includes treating for receiving the time precision that network element to be measured returns
Second time of the receiving time accuracy test request of survey grid member record and the 3rd time of sending time accuracy test response；Connect
Time recording module is received, the 4th time for the response of record test device receiving time accuracy test；Timing tracking accuracy is true
Cover half block, for according to first time, the second time, the 3rd time and the 4th time, determining network element to be measured relative to time source
Timing tracking accuracy.
In one embodiment, timing tracking accuracy determining module includes：Total delay computing unit, for by the second time
And the summation of difference at the first time and the difference of the 4th time and the 3rd time is as measurement circuit total delay；Average retardation calculates
Unit, for using the half of line delay total time as measurement circuit average retardation；Time calculating unit is compareed, for by the
The difference of two times and measurement circuit average retardation is as the control time；Timing tracking accuracy computing unit, for by the first time
With timing tracking accuracy of the difference as network element to be measured of control time.
In one embodiment, when time precision test request further includes test device mark and/or test device transmission
Between accuracy test ask port mark, time precision test response further include network element ID to be measured and/or network element to be measured hair
Send the mark of the port of time precision test response；Test response receiving module is further used for receiving network element to be measured according to test
The time precision test response that the mark of the port of device identification and/or the request of test device sending time accuracy test returns；
Receiving time logging modle is further used for what is responded according to network element ID to be measured and/or network element sending time accuracy test to be measured
The mark of port, record test device Receiver Precision test the 4th time of response message.
In one embodiment, device further includes：Net synchronization capability determining module, for according to each network element to be measured relative to
The timing tracking accuracy of time source, obtains the time synchronization performance of each network element to be measured；Compensating module, for according to each to be measured
Time synchronization performance between network element, time synchronization is carried out to the link between each network element to be measured and/or each network element to be measured
Compensation.
In one embodiment, device further includes：Synchronisation source changes module, for sending network element phase to be measured to network element to be measured
For the timing tracking accuracy of time source, so as to when network element to be measured and the timing tracking accuracy in the time synchronization source of network element to be measured
When difference is more than preset value, network element to be measured is using test device as time synchronization source.
In one embodiment, network returns bearer network for base station, and/or, the time source of test device and network is
High precision clock server with GPS time synchronizing information.
The present invention by using with network there is the network element to be measured in the test device and network in same time source to be handed over
Mutually, and by the request of transmission and the response of reception the time of the transmitting-receiving message of test device and network element to be measured record is obtained, from
And timing tracking accuracy of the network element to be measured relative to time source can be calculated, without test of manually showing up, improve in network
Network element carries out the convenience and testing efficiency of time synchronization test.
By referring to the drawings to the present invention exemplary embodiment detailed description, further feature of the invention and its
Advantage will be made apparent from.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the application scenarios schematic diagram of time synchronization test method of the present invention.
Fig. 2 is the flow chart of one embodiment of time synchronization test method of the present invention.
Fig. 3 is the schematic diagram that test device of the present invention and network element to be measured carry out message interaction.
Fig. 4 is the flow chart of another embodiment of time synchronization test method of the present invention.
Fig. 5 is the structure chart of one embodiment of time synchronization test device of the present invention.
Fig. 6 is the structure chart of another embodiment of time synchronization test device of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower all other embodiments obtained, belong to the scope of protection of the invention.
Fig. 1 is the application scenarios schematic diagram of time synchronization test method of the present invention.As shown in Figure 1, terminal by base station and
ONU (Optical Network Unit, optical network unit) accesses network, then passes through OLT (the Optical Line in network
Terminal, optical line terminal), SR (Service Router, full-service router), CR (Core Router, core route
Device) core network access.The time source of the network is high precision clock equipment.CR connection high precision clock equipment, and with reference to high-precision
Spend clockwork and carry out time synchronization.Other equipment in network carries out time synchronization with reference to upstream equipment successively, i.e. SR is to CR
Synchronous, OLT is synchronous to SR.The time source of test device is identical with the time source of network, is high precision clock equipment.Test dress
Put and be communicatively coupled with the network element in network, and can be interacted with each network element passage time accuracy test message,
So as to calculate the timing tracking accuracy of each network element, to be adjusted when the time synchronization performance of network element is poor.
It will be apparent to those skilled in the art that Fig. 1 is a kind of applied field of time synchronization test method provided by the invention
Scape, does not play the present invention restricted.As needed, those skilled in the art can survey time synchronization provided by the invention
Method for testing is applied in other network application scenes, and which is not described herein again.
During the normal network operation, the network element in network carries out successively with reference to the time of the adjacent network element in network
It is synchronous, such as each network element can upstream network element progress time synchronization.Due to equipment influence in itself or for link matter
The reason for amount, the time of the network element in network are likely to have differences with the time of time source.It is therefore possible to use have with network
The test device for having same time source measures the time of network element to be measured and the difference of time source, so as to obtain the time of network element to be measured
Synchronization accuracy.The time synchronization test method of one embodiment of the invention is described below with reference to Fig. 2.
Fig. 2 is the flow chart of one embodiment of time synchronization test method of the present invention.As shown in Fig. 2, the embodiment
Method includes：
Step S202, to be measured network element sending time accuracy test request of the test device into network, time precision test
Request includes the first time of the sending time accuracy test request of test device record.
Test device both can be the autonomous device in network, such as test server, or other equipment is
A module in system, such as can be a test module in existing integrated maintenance test system.
Wherein, test device and network have identical time source.The time source of test device and network for example can be
The high precision clock service of time synchronization information with GPS (Global Positioning System, global positioning system)
Device.
Step S204, test device receive the time precision test response that network element to be measured returns, time precision test response
Second time of the receiving time accuracy test request including network element to be measured record and the 3rd of the response of sending time accuracy test the
Time.
Step S206, test device record test device Receiver Precision test the 4th time of response message.
Step S208, test device determine to treat survey grid according to first time, the second time, the 3rd time and the 4th time
First timing tracking accuracy relative to time source.
Network element to be measured refers to time and the time source of synchronization network element to be measured relative to the timing tracking accuracy of time source
Time difference.
Wherein, such as timing tracking accuracy of the network element to be measured relative to time source can be determined using following methods：Test
Device always prolongs the second time and the summation of difference and the difference of the 4th time and the 3rd time at the first time as measurement circuit
Late；Test device is using the half of line delay total time as measurement circuit average retardation；Test device is by the second time and survey
The difference of circuit average retardation is tried as the control time；Test device is using the difference with the control time at the first time as network element to be measured
Timing tracking accuracy.
By using with network there is the network element to be measured in the test device and network in same time source to interact, and lead to
The time of the response acquisition test device of the request sent and reception and the transmitting-receiving message of network element to be measured record is spent, so as to count
Timing tracking accuracy of the network element to be measured relative to time source is calculated, without test of manually showing up, improves and network element in network is carried out
The convenience and testing efficiency of time synchronization test.
Also, test device passage time accuracy test is asked and time precision test response is handed over Devices to test
Mutually, will not device under test impact, ensure that the normal of current business is carried out and carried out.
Message interaction process in step S202~S206 can for example be represented by Fig. 3.If when first time, second
Between, the 3rd time and the 4th time be respectively t1、t2、t3And t4, t1' it is correction time, t1' and t2Between time difference be link
Influence and caused by time delay.Therefore, if network element to be measured and the time in event source can be consistent, t1With t1' equal,
That is t1With t1' between difference reflect the timing tracking accuracy of network element to be measured.
Circuit average retardation Delay between network element to be measured and test device can for example be calculated by formula (1)：
Delay=(t2-t1)+(t4-t3)/2 (1)
Network element to be measured can be calculated relative to the timing tracking accuracy SynAccuracy of time source by formula (2)：
SynAccuracy=t1-t1'=t1-(t2-Delay) (2)
It is thus possible to the receiving time, sending time when carrying out message interaction by test device and network element to be measured calculate
Go out circuit average retardation, and can combined circuit average retardation calculate timing tracking accuracy of the network element to be measured relative to time source.
Test device can connect multiple network elements in network and carry out time synchronization test, and these tests can be
The same time carries out.And in order to distinguish the test result of different network elements, test device and network element to be measured can be by time essences
Spend in test request and time precision test response and add mark, to distinguish network element to be measured.
One embodiment is that time precision test request further includes test device mark and/or test device sending time
The mark of the port of accuracy test request, time precision test response further includes network element ID to be measured and/or network element to be measured is sent
The mark of the port of time precision test response.
So as to which test device can receive network element to be measured according to test device mark and/or test device sending time essence
Spend the time precision test response that the mark of the port of test request returns, i.e. network element to be measured please in receiving time accuracy test
After asking, it can identify that the request is sent by test device according to the device identification in request or port-mark, and
The purpose of the request responds request to require network element to be measured to record receiving time.
The port that test device can also be responded according to network element ID to be measured and/or network element sending time accuracy test to be measured
Mark, record test device Receiver Precision test response message the 4th time, i.e. network element of the test device in response
It is response which network element returns that mark or port-mark, which identify, so as to the time precision sent to the network element survey
Examination request is corresponded to, it is ensured that the accuracy of test.
In addition, test device can also synthetically weigh the timing tracking accuracy of each network element in network.One embodiment
For, timing tracking accuracy of the test device according to each network element to be measured relative to time source, the time of each network element to be measured of acquisition
Net synchronization capability；Test device to each network element to be measured and/or each is treated according to the time synchronization performance between each network element to be measured
Link between survey grid member carries out time synchronization compensation.
For example, test device can be according to each network element to be measured relative to time source timing tracking accuracy, obtain network
Middle timing tracking accuracy value is maximum, i.e. the minimum some network elements of time net synchronization capability, and sends and instruct to these network elements, with to net
The time of member or synchronous set are adjusted.Further, it is also possible to staff is notified to tie up relevant network element and link
Shield.
Test device in the case where the time synchronization performance of network element deteriorates, can ensure the normal operation of network.Below
The time synchronization test method of another embodiment of the present invention is described with reference to figure 4.
Fig. 4 is the flow chart of another embodiment of time synchronization test method of the present invention.As shown in figure 4, the embodiment
Method include：
Step S402, test device send timing tracking accuracy of the network element to be measured relative to time source to network element to be measured.
Step S404, network element to be measured obtain the timing tracking accuracy in time synchronization source.
Time synchronization source refers to that network element directly refers to and carries out other network elements of time synchronization, such as can be network element to be measured
Upstream network element in a network.
Step S406, presets when the difference of network element to be measured and the timing tracking accuracy in the time synchronization source of network element to be measured is more than
During value, network element to be measured is using test device as time synchronization source.
For example, in the case of network is normal, network element A is synchronized with reference to the time of network element B.If the time of network element A is same
Step precision is a, and the timing tracking accuracy of network element B is b.When the gap of a and b is excessive, illustrate net synchronization capability between A and B compared with
Difference, will impact network or business.Therefore, network element A can using test device as interim time synchronization source so that
It can ensure network, the normal operation of business.
Test device can also notify control centre, maintenance personal etc., and the time synchronization performance between A and B is repaiied
It is multiple, such as adjustment network element performance, improve link-quality between A and B etc..After fault restoration, network element A can be again by net
First B is as time synchronization source.
Time synchronization test method provided by the invention can be used for needing the network for carrying out time synchronization.It can especially expire
The time synchronization demand of the networks more demanding to time synchronization performance such as sufficient base station passback bearer network.
The time synchronization test device of one embodiment of the invention is described below with reference to Fig. 5.
Fig. 5 is the structure chart of one embodiment of time synchronization test device of the present invention.As shown in figure 5, the embodiment
Time synchronization test device includes：Test request sending module 51, is surveyed for the network element sending time precision to be measured into network
Examination request, time precision test request include the first time of the sending time accuracy test request of test device record, wherein,
Test device and network have identical time source；Test response receiving module 52, the time returned for receiving network element to be measured
Accuracy test responds, and time precision test response includes the second time of the receiving time accuracy test request of network element record to be measured
With the 3rd time of sending time accuracy test response；Receiving time logging modle 53, for record test device Receiver Precision
Test the 4th time of response message；Timing tracking accuracy determining module 54, for according to first time, the second time, the 3rd
Time and the 4th time, determine timing tracking accuracy of the network element to be measured relative to time source.
Wherein, network can be that base station returns bearer network.
Wherein, the time source of test device and network can be the high accuracy with GPS time synchronizing information
Clock server.
Wherein, time precision test request can also include test device mark and/or test device sending time precision
The mark of the port of test request, time precision test response can also include network element ID to be measured and/or network element to be measured is sent
The mark of the port of time precision test response.Test response receiving module 52 can be further used for receiving network element to be measured according to
The time precision test that test device identifies and/or the mark of the port of test device sending time accuracy test request returns is rung
Should.Receiving time logging modle 53 can be further used for according to network element ID to be measured and/or network element sending time precision to be measured
The mark of the port of response is tested, record test device Receiver Precision tests the 4th time of response message.
The time synchronization test device of another embodiment of the present invention is described below with reference to Fig. 6.
Fig. 6 is the structure chart of another embodiment of time synchronization test device of the present invention.As shown in fig. 6, the embodiment
, timing tracking accuracy determining module 54 can include：Total delay computing unit 641, for by the second time and at the first time
Difference and the difference of the 4th time and the 3rd time summation as measurement circuit total delay；Average retardation computing unit 642, is used
In using the half of line delay total time as measurement circuit average retardation；Time calculating unit 643 is compareed, during for by second
Between and measurement circuit average retardation difference as control the time；Timing tracking accuracy computing unit 644, for will at the first time and
Compare timing tracking accuracy of the difference of time as network element to be measured.
In addition, test device can also include：Net synchronization capability determining module 65, for according to each network element to be measured relative to
The timing tracking accuracy of time source, obtains the time synchronization performance of each network element to be measured；Compensating module 66, for being treated according to each
Time synchronization performance between survey grid member, it is same to carry out the time to the link between each network element to be measured and/or each network element to be measured
Step compensation.
In addition, test device can also include：Synchronisation source changes module 67, for sending network element phase to be measured to network element to be measured
For the timing tracking accuracy of time source, so as to when network element to be measured and the timing tracking accuracy in the time synchronization source of network element to be measured
When difference is more than preset value, network element to be measured is using test device as time synchronization source.
In above-mentioned each embodiment, time synchronization test device both can be the autonomous device in network, such as test
Server, or a module in other equipment or system, such as can be in existing integrated maintenance test system
A test module.
In addition, the method according to the invention is also implemented as a kind of computer program product, the computer program product
Including computer-readable medium, be stored with the computer-readable medium for perform the present invention method in limit it is above-mentioned
The computer program of function.Those skilled in the art will also understand is that, described various exemplary with reference to disclosure herein
Logical block, module, circuit and algorithm steps may be implemented as the combination of electronic hardware, computer software or both.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention.
Claims (12)
- A kind of 1. time synchronization test method, it is characterised in that including：To be measured network element sending time accuracy test request of the test device into network, the time precision test request include surveying The first time of the transmission time precision test request of record is put in trial assembly, wherein, the test device and network tool There is identical time source；Test device receives the time precision test response that the network element to be measured returns, and the time precision test response includes institute State the second time of the reception time precision test request of network element record to be measured and send the time precision test response The 3rd time；Test device record test device receives the 4th time of the time precision test response；Test device according to first time, the second time, the 3rd time and the 4th time, determine the network element to be measured relative to when Between source timing tracking accuracy.
- 2. according to the method described in claim 1, it is characterized in that, the test device is according to first time, the second time, Three times and the 4th time, determine that the network element to be measured includes relative to the timing tracking accuracy of time source：Test device is using the second time and the summation of difference at the first time and the difference of the 4th time and the 3rd time as test Circuit total delay；Test device is using the half of line delay total time as measurement circuit average retardation；Test device is using the difference of the second time and measurement circuit average retardation as the control time；Timing tracking accuracy of the test device using the difference of first time and control time as the network element to be measured.
- 3. according to the method described in claim 1, it is characterized in that,The time precision test request further includes test device mark and/or test device sends the time precision test and asks The mark for the port asked, the time precision test response further includes network element ID to be measured and/or the network element to be measured sends institute State the mark of the port of time precision test response；The test device, which receives the time precision test response that the network element to be measured returns, to be included：The test device reception network element to be measured is identified according to the test device and/or test device sends the time precision The time precision test response that the mark of the port of test request returns；The 4th time that the test device record test device receives the accuracy test response message includes：Test device sends the end of the time precision test response according to the network element ID to be measured and/or the network element to be measured The mark of mouth, record test device receive the 4th time of the accuracy test response message.
- 4. according to the method described in claim 1, it is characterized in that, further include：Timing tracking accuracy of the test device according to each network element to be measured relative to time source, obtains the time of each network element to be measured Net synchronization capability；Test device to each network element to be measured and/or each treats survey grid according to the time synchronization performance between each network element to be measured Link between member carries out time synchronization compensation.
- 5. according to the method described in claim 1, it is characterized in that, further include：Test device sends timing tracking accuracy of the network element to be measured relative to time source to the network element to be measured, to work as It is described to be measured when stating the difference of the timing tracking accuracy in the time synchronization source of network element to be measured and the network element to be measured and being more than preset value Network element is using test device as time synchronization source.
- 6. according to the method any one of claim 1-5, it is characterised in thatThe network returns bearer network for base station, and/or,The time source of the test device and the network is the high precision clock with GPS time synchronizing information Server.
- A kind of 7. time synchronization test device, it is characterised in that including：Test request sending module, for the network element sending time accuracy test to be measured request into network, the time precision Test request includes the first time of the transmission time precision test request of test device record, wherein, the test dress Put has identical time source with the network；Test response receiving module, response, the time precision are tested for receiving the time precision that the network element to be measured returns When test response includes the second time of the reception time precision test request of the network element record to be measured and sends described Between accuracy test respond the 3rd time；Receiving time logging modle, the 4th time of the time precision test response is received for record test device；Timing tracking accuracy determining module, for according to first time, the second time, the 3rd time and the 4th time, determining institute State timing tracking accuracy of the network element to be measured relative to time source.
- 8. device according to claim 7, it is characterised in that the timing tracking accuracy determining module includes：Total delay computing unit, for by the second time and at the first time difference and the difference of the 4th time and the 3rd time it is total With as measurement circuit total delay；Average retardation computing unit, for using the half of line delay total time as measurement circuit average retardation；Time calculating unit is compareed, for using the difference of the second time and measurement circuit average retardation as the control time；Timing tracking accuracy computing unit, for will at the first time and control the time difference it is same as the time of the network element to be measured Walk precision.
- 9. device according to claim 7, it is characterised in thatThe time precision test request further includes test device mark and/or test device sends the time precision test and asks The mark for the port asked, the time precision test response further includes network element ID to be measured and/or the network element to be measured sends institute State the mark of the port of time precision test response；The test response receiving module, which is further used for receiving the network element to be measured, to be identified and/or surveys according to the test device The time precision test response that the mark that the port for sending the time precision test request is put in trial assembly returns；The receiving time logging modle is further used for sending institute according to the network element ID to be measured and/or the network element to be measured The mark of the port of time precision test response is stated, when record test device receives the 4th of the accuracy test response message Between.
- 10. device according to claim 7, it is characterised in that further include：Net synchronization capability determining module, for the timing tracking accuracy according to each network element to be measured relative to time source, obtains each The time synchronization performance of network element to be measured；Compensating module, for according to the time synchronization performance between each network element to be measured, to each network element to be measured and/or each is treated Link between survey grid member carries out time synchronization compensation.
- 11. device according to claim 7, it is characterised in that further include：Synchronisation source changes module, for sending time synchronization essence of the network element to be measured relative to time source to the network element to be measured Degree, to be more than preset value when the difference of the network element to be measured and the timing tracking accuracy in the time synchronization source of the network element to be measured When, the network element to be measured is using test device as time synchronization source.
- 12. according to the device any one of claim 7-11, it is characterised in thatThe network returns bearer network for base station, and/or,The time source of the test device and the network is the high precision clock with GPS time synchronizing information Server.
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