CN104837153B - Detect method and device, system and the signaling receiver of signaling time accuracy - Google Patents
Detect method and device, system and the signaling receiver of signaling time accuracy Download PDFInfo
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- CN104837153B CN104837153B CN201410046891.4A CN201410046891A CN104837153B CN 104837153 B CN104837153 B CN 104837153B CN 201410046891 A CN201410046891 A CN 201410046891A CN 104837153 B CN104837153 B CN 104837153B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
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Abstract
The invention discloses a kind of method, apparatus, system and the signaling receiver of detection signaling time accuracy, method includes:Signaling, signaling time information and the clock counter information of the Devices to test obtained by drive test are received, and receives the signaling and signaling time information of the opposite end output for carrying out Signalling exchange with Devices to test;Obtain the drive test processing absolute time in the corresponding Devices to test relative time of clock counter information of same signaling and the signaling time information of Devices to test output signaling;Each signaling is ranked up according to the priority of the Devices to test relative time, and finds out the identical signaling of the opposite end output according to the signaling after sequence and forms another sequence;On the basis of a signaling of the setting in the sequence of the Devices to test relative time, the first time calculated separately between remaining signaling and a signaling of the setting in sorting at two kinds is poor;The second time difference of each signaling is not determined according to first time difference;The signaling time accuracy index of Devices to test is determined according to the second time difference.
Description
Technical field
The present invention relates to signaling time detection technique more particularly to a kind of methods and dress of detection signaling time accuracy
It sets, system and signaling receiver.
Background technology
Long evolving system(LTE, Long Term Evolution)Network architecture flattening, traditional Abis/Iub connect
It mouthful disappears, the monitoring signaling optimization means based on Abis/Iub interfaces can not be continuing in 4G, need to introduce that signaling is soft to adopt
Technology is exported the original signaling of full dose Jing Guo this equipment by main equipment.And function course is enabled verifying soft accept and believe, signaling
Time accuracy is important inspection target.Ensure the signaling of equipment output without lose, without out of order, need itself and original letter
The timestamp of order compares one by one, sees with the presence or absence of time error.Consider that the interaction of signaling is more frequent, it is desirable that signaling time precision
At least up to ms grades.
The Signalling exchange of terminal and eNB are frequent, and hundreds of Signalling exchanges are may be more than likely complete in 1s, therefore it is required that source and quilt
End stringent synchronization is surveyed, and the time precision of original signaling record needs at least up to ms grades, can just carry out accurate evaluation.But
The time precision of original signaling in existing scheme is difficult to meet the requirements, and reason has two aspects:
1, the clock source of the record of drive test application be using the PC machine local zone time installed, even if by ntp server or
The modes such as GPS are synchronized with base station, are limited to the response delay that PC machine receives the USB serial ports of clock signal, synchronization accuracy
Also it is only capable of reaching 50~100 milliseconds, cannot achieve a millisecond class precision;
2, processing delay, can not in real time beat terminal interaction signaling caused by drive test is waited for using inside there are process queue
It is just the same to have that adjacent several signaling times stab for upper current time stamp, and error is about 30~50ms.
Based on the above reason, prior art is difficult to obtain the true time of origin of original signaling, can only support tens
The time accuracy verification of even hundred milliseconds precision of millisecond waits times accuracy to ask it is difficult to detect that the signaling of collecting device is out of order
Topic.
Invention content
The embodiment of the present invention is in order to solve the above technical problems, provide a kind of method and dress of detection signaling time accuracy
It sets, system and signaling receiver, can accurately determine signaling time accuracy index.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way:
A method of detection signaling time accuracy, including:
Signaling, signaling time information and the clock counter information of the Devices to test obtained by drive test are received, and is received
The signaling and signaling time information of the opposite end output of Signalling exchange are carried out with Devices to test;
The corresponding Devices to test relative time of clock counter information and the Devices to test for obtaining same signaling are defeated
Go out the drive test processing absolute time in the signaling time information of signaling;The drive test handles absolute time in the Devices to test phase
The Devices to test relative time is proofreaded when being overflowed to the time;
Each signaling is ranked up according to the priority of the Devices to test relative time, and is looked into according to the signaling after sequence
It finds out the identical signaling of the opposite end output and forms another sequence;
On the basis of a signaling of the setting in the sequence of the Devices to test relative time, in sorting at two kinds respectively
The first time calculated between remaining signaling and a signaling of the setting is poor;
The second time difference of each signaling is not determined according to the first time difference;
The signaling time accuracy index of the Devices to test is determined according to second time difference.
Preferably, signaling, signaling time information and the clock counter for receiving the Devices to test obtained by drive test
Information, including:
Devices to test initiates Signalling exchange with drive test application, generates signaling, and the drive test is applied generates letter for the signaling
Mark is enabled, the clock counter information of the signaling is included in the signaling mark;
The drive test application receives the signaling, is that drive test processing absolute time is arranged in every signaling, and exports the letter
The clock counter information of order and drive test processing absolute time and the signaling.
Preferably, the reception carries out the signaling and signaling time information of the opposite end output of Signalling exchange with Devices to test,
Including:
The opposite end receives the signaling for interacting and generating with the Devices to test, includes source code flow, signaling in the signaling
Time, the Devices to test identification information;
It exports the opposite end and interacts the signaling generated with the Devices to test.
Preferably, on the basis of a signaling of the setting in the sequence of the Devices to test relative time, two
The first time calculated separately between remaining signaling and a signaling of the setting in kind sequence is poor, including:
△Nn=(Nn-Nk)× a, n=1,2,3 ..., M, n ≠ k,
△ Tn '=Tn '-Tk ', n=1,2,3 ..., M, n ≠ k,
Wherein, the Devices to test of the △ Nn between nth bar signaling and k-th of signaling of the setting in corresponding sequence
The first time of relative time is poor, Nn(n=1,2,3,…,M)Indicate that the Devices to test relative time of nth bar signaling, a are
The step-length of the Devices to test relative time, M are the total quantity of signaling;△ Tn ' are nth bar signaling and the in corresponding sequence
The first time of the signaling time of opposite end output signaling between k signaling is poor, Tn '(n=1,2,3,…,M)For nth bar
The signaling time of the opposite end output signaling of signaling.
Preferably, second time difference for not determining each signaling according to the first time difference, including:
When the Devices to test relative time does not overflow, △ tn=△ Tn '-△ Nn, n=1,2,3 ..., M, n ≠ k,
When the Devices to test relative time overflows, △ tn=Floor((Tn-T1)×K/(N_max+1)/a)×(N_max
+1)×a+△Nn-△Tn’;△ tn are second time difference of nth bar signaling, Floor()Indicate downward rounding operation, N_
Max is the Devices to test relative time overflow value, and a is the step-length of the Devices to test relative time, and Tn is nth bar signaling
The drive test of the drive test application handles absolute time, and K is that the drive test handles absolute time accuracy unit and the clock
The quotient of the time step unit of counter.
Preferably, the signaling time accuracy index of the Devices to test includes the absolute average of second time difference
Error, the absolute average error variance of second time difference.
Preferably, believe in the signaling, signaling time information and clock counter for receiving the Devices to test obtained by drive test
Breath is received with before the signaling of the opposite end output of Devices to test progress Signalling exchange and signaling time information, and the method is also wrapped
It includes:
The drive test is applied and the Devices to test carries out time presynchronization, and the precision of the presynchronization is described to be synchronized to
Drive test handles the precision of absolute time;
The time step of the clock counter is less than the precision of drive test processing absolute time.
It is a kind of detection signaling time accuracy device, including the first receiving unit, the second receiving unit, acquiring unit,
Sequencing unit, computing unit, the first determination unit and the second determination unit, wherein:
First receiving unit, signaling, signaling time information and clock for receiving the Devices to test obtained by drive test
Counter information;
Second receiving unit, signaling and signaling time for receiving the opposite end output for carrying out Signalling exchange with Devices to test
Information;
Acquiring unit, the corresponding Devices to test relative time of clock counter information for obtaining same signaling and institute
State the drive test processing absolute time in the signaling time information of Devices to test output signaling;The drive test handles absolute time in institute
It states when Devices to test relative time overflows and the Devices to test relative time is proofreaded;
Sequencing unit, for being ranked up to each signaling according to the priority of the Devices to test relative time, and according to
Signaling after sequence finds out the identical signaling of the opposite end output and forms another sequence;
Computing unit is used on the basis of a signaling of the setting in the sequence of the Devices to test relative time,
The first time calculated separately between remaining signaling and a signaling of the setting in two kinds of sequences is poor;
First determination unit, the second time difference for not determining each signaling according to the first time difference;
Second determination unit, for determining that the signaling time accuracy of the Devices to test refers to according to second time difference
Mark.
Preferably, first receiving unit receives the signaling by drive test application and the drive test handles absolute time
Between and the signaling clock counter information;Wherein, Devices to test initiates Signalling exchange with drive test application, generates signaling,
The drive test is applied generates signaling mark for the signaling, and the clock counter comprising the signaling is believed in the signaling mark
Breath;The drive test application receives the signaling, is that drive test processing absolute time is arranged in every signaling, and exports the signaling and institute
State the clock counter information of drive test processing absolute time and the signaling.
Preferably, second receiving unit by traffic aggregation adapter receive the opposite end of opposite end output with
The Devices to test interacts the signaling generated, includes source code flow, signaling time, Devices to test mark letter in the signaling
Breath.
Preferably, the computing unit, it is poor to be additionally operable to calculate the first time in the following manner:
△Nn=(Nn-Nk)× a, n=1,2,3 ..., M, n ≠ k,
△ Tn '=Tn '-Tk ', n=1,2,3 ..., M, n ≠ k,
Wherein, the Devices to test of the △ Nn between nth bar signaling and k-th of signaling of the setting in corresponding sequence
The first time of relative time is poor, Nn(n=1,2,3,…,M)Indicate that the Devices to test relative time of nth bar signaling, a are
The step-length of the Devices to test relative time, M are the total quantity of signaling;△ Tn ' are nth bar signaling and the in corresponding sequence
The first time of the signaling time of opposite end output signaling between k signaling is poor, Tn '(n=1,2,3,…,M)For nth bar
The signaling time of the opposite end output signaling of signaling.
Preferably, first determination unit is additionally operable to determine the second time difference of each signaling in the following manner:
When the Devices to test relative time does not overflow, △ tn=△ Tn '-△ Nn, n=1,2,3 ..., M, n ≠ k,
When the Devices to test relative time overflows, △ tn=Floor((Tn-T1)×K/(N_max+1)/a)×(N_max
+1)×a+△Nn-△Tn’;△ tn are second time difference of nth bar signaling, Floor()Indicate downward rounding operation, N_
Max is the Devices to test relative time overflow value, and a is the step-length of the Devices to test relative time, and Tn is nth bar signaling
The drive test of the drive test application handles absolute time, and K is that the drive test handles absolute time accuracy unit and the clock
The quotient of the time step unit of counter.
Preferably, the signaling time accuracy index of the Devices to test includes the absolute average of second time difference
Error, the absolute average error variance of second time difference.
A kind of signaling receiver includes the device of detection signaling time accuracy above-mentioned.
A kind of system of detection signaling time accuracy, including drive test application, Devices to test and signaling receiver, wherein
Drive test application generates signaling and exports to the signaling receiver, be for initiating Signalling exchange with Devices to test
The signaling generates signaling mark, and the clock counter information of the signaling is included in the signaling mark;
Devices to test generates signaling and exports to the signaling for initiating Signalling exchange flow with drive test application
Receiver generates signaling mark, the clock counter information of signaling is included in the signaling mark;
Signaling receiver, based on the signaling, signaling time information and clock that receive the Devices to test obtained by drive test
Number device information, and receive the signaling and signaling time information of the opposite end output that Signalling exchange is carried out with Devices to test;According to described
The priority of Devices to test relative time is ranked up each signaling, and finds out the opposite end according to the signaling after sequence and export
Identical signaling and form another sequence;Using set the signaling in the sequence of the Devices to test relative time as base
Standard, the first time calculated separately between remaining signaling and a signaling of the setting in sorting at two kinds are poor;According to described
Second time difference determined the signaling time accuracy index of the Devices to test.
Preferably, it is poor to calculate the first time in the following manner for the signaling receiver:
△Nn=(Nn-Nk)× a, n=1,2,3 ..., M, n ≠ k,
△ Tn '=Tn '-Tk ', n=1,2,3 ..., M, n ≠ k,
Wherein, the Devices to test of the △ Nn between nth bar signaling and k-th of signaling of the setting in corresponding sequence
The first time of relative time is poor, Nn(n=1,2,3,…,M)Indicate that the Devices to test relative time of nth bar signaling, a are
The step-length of the Devices to test relative time, M are the total quantity of signaling;△ Tn ' are nth bar signaling and the in corresponding sequence
The first time of the signaling time of opposite end output signaling between k signaling is poor, Tn '(n=1,2,3,…,M)For nth bar
The signaling time of the opposite end output signaling of signaling.
Preferably, the signaling receiver determines the second time difference of each signaling in the following manner:
When the Devices to test relative time does not overflow, △ tn=△ Tn '-△ Nn, n=1,2,3 ..., M, n ≠ k,
When the Devices to test relative time overflows, △ tn=Floor((Tn-T1)×K/(N_max+1)/a)×(N_max
+1)×a+△Nn-△Tn’;△ tn are second time difference of nth bar signaling, Floor()Indicate downward rounding operation, N_
Max is the Devices to test relative time overflow value, and a is the step-length of the Devices to test relative time, and Tn is nth bar signaling
The drive test of the drive test application handles absolute time, and K is that the drive test handles absolute time accuracy unit and the clock
The quotient of the time step unit of counter.
In the embodiment of the present invention, can Devices to test and signaling output equipment can not stringent synchronization in the case of, it is accurate to examine
The signaling time accuracy and processing delay of Devices to test output are measured, precision reaches ms grades of even smallers.The embodiment of the present invention is big
The big rank for improving detection signaling time accuracy.
Description of the drawings
Fig. 1 is the system composed structure schematic diagram of the detection signaling time accuracy of the embodiment of the present invention;
Fig. 2 is the application scenarios schematic diagram of the embodiment of the present invention;
Fig. 3 is the another application schematic diagram of a scenario of the embodiment of the present invention
Fig. 4 is the flow chart of the method for the detection signaling time accuracy of the embodiment of the present invention;
Fig. 5 is the composed structure schematic diagram of the device of the detection signaling time accuracy of the embodiment of the present invention.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, by the following examples and with reference to attached drawing, right
The present invention is further described.
Fig. 1 is the system composed structure schematic diagram of the detection signaling time accuracy of the embodiment of the present invention, as shown in Figure 1,
The system of the detection signaling time accuracy of the embodiment of the present invention includes signaling receiver, Devices to test(Base station and traffic aggregation
Adapter(SCA)), drive test terminal etc., wherein Devices to test and drive test terminal(Drive test application is installed)Between carry out signaling friendship
Mutually, drive test is applied carries out Signalling exchange with Devices to test, and the signaling for acquiring Devices to test is simultaneously sent to signaling receiver;It waits for
Measurement equipment carries out Signalling exchange with signaling receiver, and the signaling that Devices to test interaction generates is sent to signaling receiver, and signaling connects
Receive the detection that device carries out signaling time accuracy according to received signaling information.Specifically,
Drive test application generates signaling and exports to the signaling receiver, be for initiating Signalling exchange with Devices to test
The signaling generates signaling mark, and the clock counter information of the signaling is included in the signaling mark;
Devices to test generates signaling and exports to the signaling for initiating Signalling exchange flow with drive test application
Receiver generates signaling mark, the clock counter information of signaling is included in the signaling mark;
Signaling receiver, based on the signaling, signaling time information and clock that receive the Devices to test obtained by drive test
Number device information, and receive the signaling and signaling time information of the opposite end output that Signalling exchange is carried out with Devices to test;According to described
The priority of Devices to test relative time is ranked up each signaling, and finds out the opposite end according to the signaling after sequence and export
Identical signaling and form another sequence;Using set the signaling in the sequence of the Devices to test relative time as base
Standard, the first time calculated separately between remaining signaling and a signaling of the setting in sorting at two kinds are poor;According to described
Second time difference determined the signaling time accuracy index of the Devices to test.
It is poor that the signaling receiver calculates the first time in the following manner:
△Nn=(Nn-Nk)× a, n=1,2,3 ..., M, n ≠ k,
△ Tn '=Tn '-Tk ', n=1,2,3 ..., M, n ≠ k,
Wherein, the Devices to test of the △ Nn between nth bar signaling and k-th of signaling of the setting in corresponding sequence
The first time of relative time is poor, Nn(n=1,2,3,…,M)Indicate that the Devices to test relative time of nth bar signaling, a are
The step-length of the Devices to test relative time, M are the total quantity of signaling;△ Tn ' are nth bar signaling and the in corresponding sequence
The first time of the signaling time of opposite end output signaling between k signaling is poor, Tn '(n=1,2,3,…,M)For nth bar
The signaling time of the opposite end output signaling of signaling.
The signaling receiver determines the second time difference of each signaling in the following manner:
When the Devices to test relative time does not overflow, △ tn=△ Tn '-△ Nn, n=1,2,3 ..., M, n ≠ k,
When the Devices to test relative time overflows, △ tn=Floor((Tn-T1)×K/(N_max+1)/a)×(N_max
+1)×a+△Nn-△Tn’;△ tn are second time difference of nth bar signaling, Floor()Indicate downward rounding operation, N_
Max is the Devices to test relative time overflow value, and a is the step-length of the Devices to test relative time, and Tn is nth bar signaling
The drive test of the drive test application handles absolute time, and K is that the drive test handles absolute time accuracy unit and the clock
The quotient of the time step unit of counter.
The signaling time accuracy index of the Devices to test includes the absolute average error of second time difference, institute
State the absolute average error variance of the second time difference.
Below in conjunction with the system of detection signaling time accuracy above-mentioned, the inspection of the embodiment of the present invention is further clarified
Survey the essence of the technical solution of signaling time accuracy.
Test equipment and signal collecting equipment time presynchronization;Presynchronization, which is related to equipment, to be had:Drive test application, signal collecting are set
It is standby(eNB+SCA), signaling receiver etc..The purpose of presynchronization is that larger Absolute timing errors occur between avoiding test system,
Therefore synchronization accuracy need to only reach second grade.Synchronous ntp server, GPS synchronizations or network time progress can be used just in synchronization scheme
Step alignment.
Drive test in drive test terminal, which is applied, initiates the interaction flows such as to access, connect with eNB, generates space interface signaling, raw simultaneously
It is identified at signaling(log), the log that terminal generates includes the clock counter information of signaling(timestamp), and log is defeated
Go out to drive test application;
In general, the clock source of the record of drive test application is using the PC machine local zone time of installation, even if being taken by NTP
The business modes such as device or GPS are synchronized with base station, are limited to the response delay that PC machine receives the USB serial ports of clock signal, same
Step precision is also only capable of reaching 50~100 milliseconds, cannot achieve a millisecond class precision;
Processing delay, can not in real time stamp terminal interaction signaling caused by drive test is waited for using inside there are process queue
It is just the same to have that adjacent several signaling times stab for current time stamp, and error is about 30~50ms.
Under normal circumstances, time synchronization server is to test equipment(Drive test software soft adopts signaling receiver)And it is tested
Equipment(ENB, signaling convergence server SCA)Time presynchronization is carried out, the analysis based on front can only achieve hundred Milliseconds even
Second class precision.
Terminal is tested by chip clock crystal oscillator, generates clock counter when every signaling processing, and by the counter
Output is to drive test software, and according to chip frequency difference, counter step-length is 1.25ms~0.03ms.Such as 1Khz clock chips, meter
Number device step-length is 1ms;Count range is larger, generally 48bit.
Drive test application receives signaling and its log, stamps processing time stamp to every signaling, and export in detailed signaling
Appearance, signaling absolute time and terminal clock counter timestamp;
The idle message that interaction generates is output to traffic aggregation adapter by eNB(SCA), wherein including the source code of message
Stream and this message correlation information:Time, eNB, cell, User Identity(Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-
RNTI)Etc. information;Original signaling code stream is packaged by SCA, and after encapsulation packet header carries the key message of the signaling, is passed through
Real-time communication protocol is transmitted to signaling receiver;The signaling output function of eNB and SCA can also be by the monitoring signaling of other forms
Equipment is completed, in this case, monitoring signaling equipment is as detected object.
Certain signaling of selected Devices to test, the absolute time for obtaining the application processing of its drive test is T(It is accurate to the second), terminal
The relative time N of output(That is terminal counter timestamp, step-length are 1 millisecond);
The same signaling of same terminal is searched in signaling receiver, obtains signal collecting equipment eNB as its generation
Time stamp T '(It is accurate to millisecond).Existing technical solution can be used in specific acquisition modes, specially:Due to NAS layers encrypt,
ENB can not obtain the NAS such as IMSI, TMSI of Devices to test layers of unique identity, therefore under multi-user environment, can pass through
Obtain the accidental access response message applied in drive test(RAR)In include Cell Radio Network Temporary Identifier/Identity, Cell-RNTI(C-RNTI),
This is indicated in cell uniquely;Then, it is searched in the encapsulation packet header that base station exports signaling with same C-RNTI marks under cell
Subscriber signaling, as Devices to test this connection procedure generate signaling.
And so on, signaling receiver obtains original time T, N of the terminal whole signaling and signal collecting equipment generates
Time T ';
A plurality of signaling is first pressed into T ', carries out time ascending sort by N afterwards.On the basis of first signaling, all letters are calculated
Enable the time difference relative to first signaling, it is assumed that the step-length of N is a ms, and the difference of nth bar signaling is:
△Nn=(Nn-Nk)× a, n=1,2,3 ..., M, n ≠ k,
△ Tn '=Tn '-Tk ', n=1,2,3 ..., M, n ≠ k,
Wherein, the Devices to test of the △ Nn between nth bar signaling and k-th of signaling of the setting in corresponding sequence
The first time of relative time is poor, Nn(n=1,2,3,…,M)Indicate that the Devices to test relative time of nth bar signaling, a are
The step-length of the Devices to test relative time, M are the total quantity of signaling;△ Tn ' are nth bar signaling and the in corresponding sequence
The first time of the signaling time of opposite end output signaling between k signaling is poor, Tn '(n=1,2,3,…,M)For nth bar
The signaling time of the opposite end output signaling of signaling.
The time Accuracy Error of nth bar signaling is:△tn=△Tn’-△Nn.If terminal clock frequency is greater than or equal to
1khz, then the time precision detected is up to 1ms even smallers.
Drive test, for calibrating absolute time, prevents counter overflow zero absolute time skew, generally using generated time T
In the case of, T should be identical as the second of T ' grade part.If counter overflow occurs, i.e. △ Nn are the time of negative or two signalings
Interval is more than counter maximum value N_max, then signaling time ERROR ALGORITHM is:
△tn=Floor((Tn-T1)×K/(N_max+1)/a)×(N_max+1)×a+△Nn-△Tn’;△ tn are n-th
Second time difference of signaling, Floor()Indicate that downward rounding operation, N_max overflow for the Devices to test relative time
Go out value, a is the step-length of the Devices to test relative time, and Tn is the drive test processing that the drive test of nth bar signaling is applied
Absolute time, K are the quotient that the drive test handles absolute time accuracy unit and the time step unit of the clock counter.
A plurality of signaling is first pressed into T ', it is as shown in table 1 below to carry out time ascending sort example by N afterwards, it is assumed that the step-length of N is
1ms:
Table 1
The time error average value and variance for counting a plurality of signaling obtain the signaling time accuracy index of equipment under test:
Mean timing error=Avg(|△tn|), n=2,3 ..., N,
Time accuracy error variance=std(|△tn|), n=2,3 ..., N,
Wherein, | | it indicates to calculate absolute value, Avg () indicates averaged;Std () indicates standard difference operation.
It should be noted that except eNB is soft adopt equipment in addition to, the technical solution of the embodiment of the present invention is equally applicable to other forms
Signal collecting equipment time accuracy detection.
Below by way of specific example, the essence for technical solution that the present invention is furture elucidated.
Fig. 2 is the application scenarios schematic diagram of the embodiment of the present invention, as shown in Fig. 2, base station is synchronized by GPS signal, meanwhile,
GPS signal gives ntp server time service, other network elements or test equipment are completed absolutely in entire test process by ntp server
Time presynchronization.Can the accuracy that ensure signaling output time under pressure test for detection eNB, can pass through more UE emulating instruments
The signaling traffic of multi-user is loaded as background service.Testing process includes:
1, all user's attachment removals of more UE emulating instruments;
2, test terminal generates space interface signaling, and first calibration signaling of record is exhausted under the business that base station handles single user
To time T, relative time N and eNB generated time T ';
3, the signaling and business of more UE emulating instruments simulation loading multi-users;The background traffic of base station is kept, terminal is tested
Continue to generate space interface signaling, until signaling detection sample is enough;
4, the temporal information of the T, N, T of test all signalings of terminal ' is obtained by association;
5, signaling mean timing error is calculated according to the statistics of this motion and processing method.
If 6, T ' records are time that signaling receiver receives the signaling, can also accurately assess soft equipment of adopting
End-to-end processing delay, analysis is with statistical referring to described previously, and which is not described herein again.
Fig. 3 is the another application schematic diagram of a scenario of the embodiment of the present invention, as shown in figure 3, base station is synchronized by GPS signal,
Meanwhile GPS signal gives ntp server time service, SCA and soft adopt signaling receiver by ntp server to complete absolute time pre- same
Step, and kept in entire test process.Drive test application before the test begins with ntp server presynchronization, and record NTP service
The difference of device time and internet time.Then, drive test terminal carries out existing network service, test with using turn-off time server
Period can be calibrated by internet time.Testing process includes:
1, preferential to select business busy using existing net actual services as business background;
2, drive test terminal initiates Signalling exchange under background service with network, until signaling detection sample is enough;
3, the T of all signalings of test terminal, N, T are associated with out by C-RNTI ' temporal information;
4, signaling mean timing error is calculated according to the statistics of this motion and processing method.
Fig. 4 is the flow chart of the method for the detection signaling time accuracy of the embodiment of the present invention, as shown in figure 4, of the invention
The method of the detection signaling time accuracy of embodiment includes the following steps:
Step 401, the signaling, signaling time information and clock counter for receiving the Devices to test obtained by drive test are believed
Breath, and receive the signaling and signaling time information of the opposite end output that Signalling exchange is carried out with Devices to test;
Specifically, signaling, signaling time information and the clock counter for receiving the Devices to test obtained by drive test
Information, including:Devices to test initiates Signalling exchange with drive test application, generates signaling, and the drive test is applied to be generated for the signaling
Signaling identifies, and the clock counter information of the signaling is included in the signaling mark;The drive test application receives the signaling,
Drive test is set for every signaling and handles absolute time, and exports the signaling and drive test processing absolute time and described
The clock counter information of signaling.
The reception carries out the signaling and signaling time information of the opposite end output of Signalling exchange with Devices to test, including:Institute
It states opposite end and receives the signaling for interact generation with the Devices to test, include source code flow in the signaling, signaling time, described wait for
Measurement equipment identification information;It exports the opposite end and interacts the signaling generated with the Devices to test.
Before step 401, further include:
The drive test is applied and the Devices to test carries out time presynchronization;
The precision of the presynchronization is to be synchronized to the precision of the drive test processing absolute time.
In the embodiment of the present invention, the time step of the clock counter is less than the essence of drive test processing absolute time
Degree.
Step 402, it obtains the corresponding Devices to test relative time of clock counter information of same signaling and described waits for
Measurement equipment exports the drive test in the signaling time information of signaling and handles absolute time;The drive test processing absolute time is waited for described
Measurement equipment relative time proofreads the Devices to test relative time when overflowing;
Step 403, each signaling is ranked up according to the priority of the Devices to test relative time, and according to sequence after
Signaling find out the identical signaling of opposite end output and form another sequence;
To signaling sequence example referring to aforementioned table 1, which is not described herein again.
Step 404, it on the basis of a signaling of the setting in the sequence of the Devices to test relative time, is arranged at two kinds
The first time calculated separately in sequence between remaining signaling and a signaling of the setting is poor;
Poor calculation is as follows at the first time:
△Nn=(Nn-Nk)× a, n=1,2,3 ..., M, n ≠ k,
△ Tn '=Tn '-Tk ', n=1,2,3 ..., M, n ≠ k,
Wherein, the Devices to test of the △ Nn between nth bar signaling and k-th of signaling of the setting in corresponding sequence
The first time of relative time is poor, Nn(n=1,2,3,…,M)Indicate that the Devices to test relative time of nth bar signaling, a are
The step-length of the Devices to test relative time, M are the total quantity of signaling;△ Tn ' are nth bar signaling and the in corresponding sequence
The first time of the signaling time of opposite end output signaling between k signaling is poor, Tn '(n=1,2,3,…,M)For nth bar
The signaling time of the opposite end output signaling of signaling.
Step 405, the second time difference of each signaling is not determined according to the first time difference;
The method of determination of second time difference is as follows:
When the Devices to test relative time does not overflow, △ tn=△ Tn '-△ Nn, n=1,2,3 ..., M, n ≠ k,
When the Devices to test relative time overflows, △ tn=Floor((Tn-T1)×K/(N_max+1)/a)×(N_max
+1)×a+△Nn-△Tn’;△ tn are second time difference of nth bar signaling, Floor()Indicate downward rounding operation, N_
Max is the Devices to test relative time overflow value, and a is the step-length of the Devices to test relative time, and Tn is nth bar signaling
The drive test of the drive test application handles absolute time, and K is that the drive test handles absolute time accuracy unit and the clock
The quotient of the time step unit of counter.
In this example, quotient of the K between second and millisecond is 1000.
Step 406, the signaling time accuracy index of the Devices to test is determined according to second time difference.
Specifically, the time error average value and variance of a plurality of signaling are counted, the signaling time for obtaining equipment under test is accurate
Property index:
Mean timing error=Avg(|△tn|), n=2,3 ..., N,
Time accuracy error variance=std(|△tn|), n=2,3 ..., N,
Wherein, | | it indicates to calculate absolute value, Avg () indicates averaged;Std () indicates standard difference operation.
Fig. 5 is the composed structure schematic diagram of the device of the detection signaling time accuracy of the embodiment of the present invention, such as Fig. 5 institutes
Show, the device of the detection signaling time accuracy of the embodiment of the present invention includes the first receiving unit 50, the second receiving unit 51, obtains
Unit 52, sequencing unit 53, computing unit 54, the first determination unit 55 and the second determination unit 56 are taken, wherein:
First receiving unit 50, signaling, the signaling time information for receiving the Devices to test obtained by drive test are timely
Clock counter information;
Second receiving unit 51, when for receiving the signaling and signaling of opposite end output for carrying out Signalling exchange with Devices to test
Between information;
Acquiring unit 52, the corresponding Devices to test relative time of clock counter information for obtaining same signaling and
Drive test in the signaling time information of the Devices to test output signaling handles absolute time;The drive test processing absolute time exists
The Devices to test relative time proofreads the Devices to test relative time when overflowing;
Sequencing unit 53 for being ranked up to each signaling according to the priority of the Devices to test relative time, and is pressed
Signaling after phototypesetting sequence finds out the identical signaling of the opposite end output and forms another sequence;
Computing unit 54 is used on the basis of a signaling of the setting in the sequence of the Devices to test relative time,
The first time calculated separately between remaining signaling and a signaling of the setting in sorting at two kinds is poor;
First determination unit 55, the second time difference for not determining each signaling according to the first time difference;
Second determination unit 56, the signaling time accuracy for determining the Devices to test according to second time difference
Index.
Preferably, first receiving unit 50 receives the signaling by drive test application and the drive test handles absolute time
Between and the signaling clock counter information;Wherein, Devices to test initiates Signalling exchange with drive test application, generates signaling,
The drive test is applied generates signaling mark for the signaling, and the clock counter comprising the signaling is believed in the signaling mark
Breath;The drive test application receives the signaling, is that drive test processing absolute time is arranged in every signaling, and exports the signaling and institute
State the clock counter information of drive test processing absolute time and the signaling.
Preferably, second receiving unit 51 receives the opposite end by the opposite end and interacts production with the Devices to test
Raw signaling includes source code flow, signaling time, the Devices to test identification information in the signaling.
Preferably, the computing unit 54, it is poor to be additionally operable to calculate the first time in the following manner:
△Nn=(Nn-Nk)× a, n=1,2,3 ..., M, n ≠ k,
△ Tn '=Tn '-Tk ', n=1,2,3 ..., M, n ≠ k,
Wherein, the Devices to test of the △ Nn between nth bar signaling and k-th of signaling of the setting in corresponding sequence
The first time of relative time is poor, Nn(n=1,2,3,…,M)Indicate that the Devices to test relative time of nth bar signaling, a are
The step-length of the Devices to test relative time, M are the total quantity of signaling;△ Tn ' are nth bar signaling and the in corresponding sequence
The first time of the signaling time of opposite end output signaling between k signaling is poor, Tn '(n=1,2,3,…,M)For nth bar
The signaling time of the opposite end output signaling of signaling.
Preferably, first determination unit 55 is additionally operable to determine the second time difference of each signaling in the following manner:
When the Devices to test relative time does not overflow, △ tn=△ Tn '-△ Nn, n=1,2,3 ..., M, n ≠ k,
When the Devices to test relative time overflows, △ tn=Floor((Tn-T1)×K/(N_max+1)/a)×(N_max
+1)×a+△Nn-△Tn’;△ tn are second time difference of nth bar signaling, Floor()Indicate downward rounding operation, N_
Max is the Devices to test relative time overflow value, and a is the step-length of the Devices to test relative time, and Tn is nth bar signaling
The drive test of the drive test application handles absolute time, and K is that the drive test handles absolute time accuracy unit and the clock
The quotient of the time step unit of counter.
The signaling time accuracy index of above-mentioned Devices to test includes the absolute average error of second time difference, institute
State the absolute average error variance of the second time difference.
The time error average value and variance for counting a plurality of signaling obtain the signaling time accuracy index of equipment under test:
Mean timing error=Avg(|△tn|), n=2,3 ..., N,
Time accuracy error variance=std(|△tn|), n=2,3 ..., N,
Wherein, | | it indicates to calculate absolute value, Avg () indicates averaged;Std () indicates standard difference operation.
It should be noted that except eNB is soft adopt equipment in addition to, the technical solution of the embodiment of the present invention is equally applicable to other forms
Signal collecting equipment time accuracy detection.
It will be appreciated by those skilled in the art that being managed everywhere in the device of detection signaling time accuracy shown in Fig. 5
The realization function of unit can refer to the associated description of the method for aforementioned detection signaling time accuracy and understand.People in the art
Member is it should be appreciated that the function of each processing unit can be by running on place in the device of detection signaling time accuracy shown in fig. 5
It manages the program on device and realizes, can also be realized by specific logic circuit.
The embodiment of the present invention also describes a kind of signaling receiver, including aforementioned detection signaling time shown in fig. 5 is accurate
The device of property.
It, in the absence of conflict, can be in any combination between technical solution recorded in the embodiment of the present invention.
In several embodiments provided by the present invention, it should be understood that disclosed method, apparatus and electronic equipment,
It may be implemented in other ways.Apparatus embodiments described above are merely indicative, for example, the unit is drawn
Point, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as:Multiple units or component can
To combine, or it is desirably integrated into another system, or some features can be ignored or not executed.In addition, shown or discussed
The mutual coupling of each component part or direct-coupling or communication connection can be by some interfaces, equipment or unit
INDIRECT COUPLING or communication connection can be electrical, mechanical or other forms.
The above-mentioned unit illustrated as separating component can be or may not be and be physically separated, aobvious as unit
The component shown can be or may not be physical unit, you can be located at a place, may be distributed over multiple network lists
In member;Some or all of wherein unit can be selected according to the actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in various embodiments of the present invention can be fully integrated into a processing unit, also may be used
It, can also be during two or more units be integrated in one unit to be each unit individually as a unit;It is above-mentioned
The form that hardware had both may be used in integrated unit is realized, can also be realized in the form of hardware adds application function unit.
One of ordinary skill in the art will appreciate that:Realize that all or part of step of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer read/write memory medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed;And storage medium above-mentioned includes:It is movable storage device, read-only
Memory(ROM, Read-Only Memory), random access memory(RAM, Random Access Memory), magnetic disc or
The various media that can store program code such as person's CD.
If alternatively, the above-mentioned integrated unit of the embodiment of the present invention is realized in the form of applied function module and as independence
Product sale or in use, can also be stored in a computer read/write memory medium.Based on this understanding, this hair
The technical solution of bright embodiment substantially in other words the part that contributes to existing technology can in the form of application product body
Reveal and, which is stored in a storage medium, including some instructions are with so that a computer is set
It is standby(Can be personal computer, server or network equipment etc.)Execute the whole of each embodiment the method for the present invention
Or part.And storage medium above-mentioned includes:Movable storage device, read-only memory(ROM, Read-Only Memory), with
Machine accesses memory(RAM, Random Access Memory), various Jie that can store program code such as magnetic disc or CD
Matter.
Scope of protection of the present invention is not limited thereto, those familiar with the art the invention discloses skill
It within the scope of art, can easily think of the change or the replacement, should be covered by the protection scope of the present invention.
Claims (17)
1. a kind of method of detection signaling time accuracy, which is characterized in that the method includes:
Signaling, signaling time information and the clock counter information of the Devices to test obtained by drive test are received, and receives and waits for
Measurement equipment carries out the signaling and signaling time information of the opposite end output of Signalling exchange;
Obtain the corresponding Devices to test relative time of clock counter information of Devices to test each signaling and described
Devices to test exports the drive test in the signaling time information of signaling and handles absolute time;The drive test handles absolute time described
Devices to test relative time proofreads the Devices to test relative time when overflowing;
Each signaling is ranked up according to the priority of the Devices to test relative time, and is found out according to the signaling after sequence
The identical signaling of opposite end output and form another sequence;
On the basis of a signaling of the setting in the sequence of the Devices to test relative time, calculated separately in sorting at two kinds
First time between remaining signaling and a signaling of the setting is poor;
The second time difference of each signaling is not determined according to the first time difference;
The signaling time accuracy index of the Devices to test is determined according to second time difference.
2. according to the method described in claim 1, it is characterized in that, the letter for receiving the Devices to test obtained by drive test
It enables, signaling time information and clock counter information, including:
Devices to test initiates Signalling exchange with drive test application, generates signaling, and the drive test is applied generates signaling mark for the signaling
Know, the clock counter information of the signaling is included in the signaling mark;
Drive test application receives the signaling, is that every signaling is arranged drive test and handles absolute time, and export the signaling and
The clock counter information of the drive test processing absolute time and the signaling.
3. according to the method described in claim 1, it is characterized in that, the reception carries out the opposite end of Signalling exchange with Devices to test
The signaling and signaling time information of output, including:
The opposite end receives the signaling for interact generation with the Devices to test, include in the signaling source code flow, signaling time,
The Devices to test identification information;
It exports the opposite end and interacts the signaling generated with the Devices to test.
4. according to the method described in claim 1, it is characterized in that, described in the sequence of the Devices to test relative time
On the basis of one signaling of setting, the between remaining signaling and a signaling of the setting is calculated separately in sorting at two kinds
One time difference, including:
△ Nn=(Nn-Nk) × a, n=1,2,3 ..., M, n ≠ k,
△ Tn '=Tn '-Tk ', n=1,2,3 ..., M, n ≠ k,
Wherein, the Devices to test of the △ Nn between nth bar signaling and k-th of signaling of the setting in corresponding sequence is opposite
The first time of time is poor, and Nn (n=1,2,3 ..., M) indicates the Devices to test relative time of nth bar signaling, and a is described
The step-length of Devices to test relative time, M are the total quantity of signaling;△ Tn ' are nth bar signaling and the kth item in corresponding sequence
The first time of the signaling time of opposite end output signaling between signaling is poor, and Tn ' (n=1,2,3 ..., M) believes for nth bar
The signaling time of the opposite end output signaling enabled.
5. according to the method described in claim 4, it is characterized in that, described do not determine each letter according to the first time difference
The second time difference enabled, including:
When the Devices to test relative time does not overflow, △ tn=△ Tn '-△ Nn
When the Devices to test relative time overflows, △ tn=Floor ((Tn-T1) × K/ (N_max+1)/a) × (N_max+1)
×a+△Nn-△Tn’;△ tn are second time difference of nth bar signaling, and Floor () indicates downward rounding operation, N_max
For the Devices to test relative time overflow value, Tn is that the opposite end of nth bar signaling exports the signaling time of signaling, and K is institute
State the quotient of drive test processing absolute time accuracy unit and the time step unit of the clock counter.
6. method according to any one of claims 1 to 5, which is characterized in that the signaling time of the Devices to test is accurate
Property index includes the absolute average error of second time difference, the absolute average error variance of second time difference.
7. according to the method described in claim 6, it is characterized in that, the signaling for receiving the Devices to test obtained by drive test,
Signaling time information and clock counter information receive the signaling and signaling of the opposite end output that Signalling exchange is carried out with Devices to test
Before temporal information, the method further includes:
The drive test is applied and the Devices to test carries out time presynchronization, and the precision of the presynchronization is to be synchronized to the drive test
Handle the precision of absolute time;
The time step of the clock counter is less than the precision of drive test processing absolute time.
8. a kind of device of detection signaling time accuracy, which is characterized in that described device connects including the first receiving unit, second
Unit, acquiring unit, sequencing unit, computing unit, the first determination unit and the second determination unit are received, wherein:
First receiving unit, signaling, signaling time information and clock count for receiving the Devices to test obtained by drive test
Device information;
Second receiving unit, signaling and signaling time letter for receiving the opposite end output for carrying out Signalling exchange with Devices to test
Breath;
Acquiring unit, the corresponding Devices to test of clock counter information for obtaining Devices to test each signaling are opposite
Drive test in the signaling time information of time and Devices to test output signaling handles absolute time;The drive test processing is exhausted
Time proofreads the Devices to test relative time when the Devices to test relative time overflows;
Sequencing unit, for being ranked up to each signaling according to the priority of the Devices to test relative time, and according to sequence
Signaling afterwards finds out the identical signaling of the opposite end output and forms another sequence;
Computing unit is used on the basis of a signaling of the setting in the sequence of the Devices to test relative time, at two kinds
The first time calculated separately in sequence between remaining signaling and a signaling of the setting is poor;
First determination unit, the second time difference for not determining each signaling according to the first time difference;
Second determination unit, the signaling time accuracy index for determining the Devices to test according to second time difference.
9. device according to claim 8, which is characterized in that first receiving unit passes through described in drive test application reception
The clock counter information of signaling and drive test processing absolute time and the signaling;Wherein, Devices to test is answered with drive test
With Signalling exchange is initiated, signaling is generated, the drive test is applied generates signaling mark for the signaling, includes in the signaling mark
The clock counter information of the signaling;The drive test application receives the signaling, is that every signaling setting drive test processing is absolute
Time, and export the clock counter information of the signaling and drive test processing absolute time and the signaling.
10. device according to claim 8, which is characterized in that second receiving unit passes through traffic aggregation adapter
The opposite end for receiving the opposite end output interacts the signaling generated with the Devices to test, includes source code in the signaling
Stream, signaling time, the Devices to test identification information.
11. device according to claim 8, which is characterized in that the computing unit is additionally operable to calculate in the following manner
The first time is poor:
△ Nn=(Nn-Nk) × a, n=1,2,3 ..., M, n ≠ k,
△ Tn '=Tn '-Tk ', n=1,2,3 ..., M, n ≠ k,
Wherein, the Devices to test of the △ Nn between nth bar signaling and k-th of signaling of the setting in corresponding sequence is opposite
The first time of time is poor, and Nn (n=1,2,3 ..., M) indicates the Devices to test relative time of nth bar signaling, and a is described
The step-length of Devices to test relative time, M are the total quantity of signaling;△ Tn ' are nth bar signaling and the kth item in corresponding sequence
The first time of the signaling time of opposite end output signaling between signaling is poor, and Tn ' (n=1,2,3 ..., M) believes for nth bar
The signaling time of the opposite end output signaling enabled.
12. according to the devices described in claim 11, which is characterized in that first determination unit is additionally operable to by with lower section
Formula determines the second time difference of each signaling:
When the Devices to test relative time does not overflow, △ tn=△ Tn '-△ Nn, n=1,2,3 ..., M, n ≠ k,
When the Devices to test relative time overflows, △ tn=Floor ((Tn-T1) × K/ (N_max+1)/a) × (N_max+1)
×a+△Nn-△Tn’;△ tn are second time difference of nth bar signaling, and Floor () indicates downward rounding operation, N_max
For the Devices to test relative time overflow value, a is the step-length of the Devices to test relative time, Tn for nth bar signaling institute
The drive test processing absolute time of drive test application is stated, K is that the drive test handles absolute time accuracy unit and the clock meter
The quotient of the time step unit of number device.
13. according to claim 8 to 12 any one of them device, which is characterized in that the signaling time of the Devices to test is accurate
True property index includes the absolute average error of second time difference, the absolute average error side of second time difference
Difference.
14. a kind of signaling receiver, which is characterized in that accurate including claim 8 to 13 any one of them detection signaling time
The device of true property.
15. a kind of system of detection signaling time accuracy, including drive test application, Devices to test and signaling receiver, wherein
Drive test application generates signaling and exports to the signaling receiver, be described for initiating Signalling exchange with Devices to test
Signaling generates signaling mark, and the clock counter information of the signaling is included in the signaling mark;
Devices to test generates signaling and output to the signaling receives for initiating Signalling exchange flow with drive test application
Device generates signaling mark, the clock counter information of signaling is included in the signaling mark;
Signaling receiver, signaling, signaling time information and clock counter for receiving the Devices to test obtained by drive test
Information, and receive the signaling and signaling time information of the opposite end output that Signalling exchange is carried out with Devices to test;According to described to be measured
The priority of equipment relative time is ranked up each signaling, and the phase of the opposite end output is found out according to the signaling after sequence
With signaling and form another sequence;On the basis of a signaling of the setting in the sequence of the Devices to test relative time,
The first time calculated separately between remaining signaling and a signaling of the setting in sorting at two kinds is poor;According to described first
Time difference determines the second time difference of each signaling respectively;When determining the signaling of the Devices to test according to second time difference
Between accuracy index.
16. system according to claim 15, which is characterized in that described in the signaling receiver calculates in the following manner
It is poor at the first time:
△ Nn=(Nn-Nk) × a, n=1,2,3 ..., M, n ≠ k,
△ Tn '=Tn '-Tk ', n=1,2,3 ..., M, n ≠ k,
Wherein, the Devices to test of the △ Nn between nth bar signaling and k-th of signaling of the setting in corresponding sequence is opposite
The first time of time is poor, and Nn (n=1,2,3 ..., M) indicates the Devices to test relative time of nth bar signaling, and a is described
The step-length of Devices to test relative time, M are the total quantity of signaling;△ Tn ' are nth bar signaling and the kth item in corresponding sequence
The first time of the signaling time of opposite end output signaling between signaling is poor, and Tn ' (n=1,2,3 ..., M) believes for nth bar
The signaling time of the opposite end output signaling enabled.
17. system according to claim 16, which is characterized in that the signaling receiver determines each in the following manner
Second time difference of signaling:
When the Devices to test relative time does not overflow, △ tn=△ Tn '-△ Nn, n=1,2,3 ..., M, n ≠ k,
When the Devices to test relative time overflows, △ tn=Floor ((Tn-T1) × K/ (N_max+1)/a) × (N_max+1)
×a+△Nn-△Tn’;△ tn are second time difference of nth bar signaling, and Floor () indicates downward rounding operation, N_max
For the Devices to test relative time overflow value, a is the step-length of the Devices to test relative time, Tn for nth bar signaling institute
The drive test processing absolute time of drive test application is stated, K is that the drive test handles absolute time accuracy unit and the clock meter
The quotient of the time step unit of number device.
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