CN108632105A - A kind of frame time delay detecting method and system - Google Patents
A kind of frame time delay detecting method and system Download PDFInfo
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- CN108632105A CN108632105A CN201710187138.0A CN201710187138A CN108632105A CN 108632105 A CN108632105 A CN 108632105A CN 201710187138 A CN201710187138 A CN 201710187138A CN 108632105 A CN108632105 A CN 108632105A
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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
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0852—Delays
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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
- H04L43/18—Protocol analysers
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Abstract
The present invention provides a kind of frame time delay detecting method,It sends OAM message and records the sending time sequence information TxMasterTime for sending the OAM message,The OAM message carries the information for identifying that the OAM message is frame time delay detection message,The OAM message is 802.3ah protocol massages,Receive the response message that the receiving terminal is fed back according to the OAM message,Record the receiving time sequence information RxSlaveTime of the response message,The receiving time sequence information RxMasterTime that the receiving terminal receives the OAM message is carried in the response message,Send the sending time sequence information TxSlaveTime of the response message,The transmitting terminal is according to TxMasterTime,RxMasterTime,TxSlaveTime,RxSlaveTime calculates the frame time delay of tested network.
Description
Technical field
The present invention can be related to communication and computer realm, more particularly to a kind of frame time delay detecting method and system
Background technology
Ethernet operation, management, safeguards (OAM, Operation Administration and Maintenance) skill
Art is that classification is realized, link level Ethernet OAM technology is applied to network, customer side edge device equipment (PE, Provider more
Edge) the Ethernet physical link between equipment-user equipment (CE, Customer Edge), for monitoring user network and fortune
Seek the link state between quotient's network.IEEE 802.3ah consensus standards are current with first mile of very extensive Ethernet
(EFM, Ethernet in the First Mile) technology, 802.3ah agreements, will by the way that remote loopback function is arranged
The test packet loopback of 802.3ah is to local terminal, by counting the packet number sent and the loopback packet number received, positioning link event
Barrier, but 802.3ah agreements effectively calculate chain-circuit time delay without having due to including only statistics loopback packet number function
Function, therefore current 802.3ah agreements cannot comprehensively assess link-quality.The prior art is carried without problem thus
For solution.
Invention content
The present invention provides a kind of frame time delay detecting methods, when cannot be carried out to link at least solving 802.3ah agreements
The technical issues of prolonging measurement, link-quality can not being fully assessed.
One aspect of the present invention provides a kind of frame time delay detecting method, and this method includes that transmitting terminal sends OAM reports to receiving terminal
Text simultaneously records the sending time sequence information TxMasterTime for sending the OAM message, which, which carries, identifies the OAM
Message is the information of frame time delay detection message, which is 802.3ah protocol massages, which receives the receiving terminal root
According to the response message that the OAM message is fed back, the receiving time sequence information RxSlaveTime of the response message is recorded, wherein should
The receiving terminal is carried in response message to receive the receiving time sequence information RxMasterTime of the OAM message and send this
The sending time sequence information TxSlaveTime of response message, the transmitting terminal, should according to the TxMasterTime
RxMasterTime, the TxSlaveTime, the RxSlaveTime calculate the frame time delay of tested network.
Further, the Code words that the information that the OAM message is frame time delay detection message is located in the OAM message are identified
Section.
Further, the transmitting terminal is in the following manner according to TxMasterTime, RxMasterTime,
TxSlaveTime, RxSlaveTime calculate the frame time delay of tested network, frame time delay=(RxSlaveTime-
TxMasterTime-(TxSlaveTime–RxMasterTime))/2。
Further, which also carries sequence number, and receiving terminal is taken according to the response message that the OAM message is fed back
With sequence number identical with the OAM message.
Further, after transmitting terminal receives the response message, further include believing the receiving time sequence of the response message
Breath RxSlaveTime is added in the response message, wherein the response message also carries the sending time sequence of the OAM message
Column information TxMasterTime.
Further, in the transmitting terminal according to TxMasterTime, RxMasterTime, TxSlaveTime,
After RxSlaveTime calculates the frame time delay of tested network, this method further includes,
Transmitting terminal calculates that the transmitting terminal sends the average transmission time interval of N number of OAM message and the receiving terminal receives the N
The average received time interval of a OAM message；
For transmitting terminal by the time interval ratio of the be averaged transmission time interval and the average received time interval, calculating should
The ratio TimeRatio of clock crystal oscillator frequency between transmitting terminal and the receiving terminal；
Transmitting terminal corrects the frame time delay using the ratio TimeRatio of the clock crystal oscillator frequency.
Further, transmitting terminal calculates average transmission time interval and reception that the transmitting terminal sends N number of OAM message
The mode of average received time interval that end receives N number of OAM message is：
Transmitting terminal sends N number of OAM message within the preset time；According to the 1st OAM message sending time sequence
The mathematic interpolation of the column information and n-th the OAM message sending time sequence information average transmission time interval
MasterTimeDiff (N)=(TxMasterTime (N)-TxMasterTime (1))/N, N are the natural number more than 2；
Transmitting terminal receives N number of response message, and the 1st is received according to the receiving terminal carried in the 1st response message
The receiving terminal carried in the receiving time sequence information and n-th of the OAM message response message receives n-th OAM reports
The mathematic interpolation average received time interval SlaveTimeDiff (N) of the receiving time sequence information of text=
(RxMasterTime (N)-RxMasterTime (1))/N, N are the natural number more than 2.
Further, transmitting terminal calculates average transmission time interval and reception that the transmitting terminal sends N number of OAM message
The mode of average received time interval that end receives N number of OAM message is：
The transmitting terminal sends N number of OAM message within the preset time, when calculating the transmission of the adjacent OAM message
Between be spaced MasterTimeDiff (N)=TxMasterTime (N)-TxMasterTime (N-1), N is natural number more than 2,
The standard variance for calculating transmission time interval MasterTimeDiff (N) obtains the adjacent OAM message transmission time interval collection
It closes, correcting the OAM message by way of the adjacent OAM message transmission time interval of removal more than 3 standard variances sends
Time interval set calculates the average transmission time interval according to the revised OAM message transmission time interval set.
The transmitting terminal receives N number of response message, and the OAM message is received according to the receiving terminal carried in the response message
Receiving time sequence information calculate receiving time interval SlaveTimeDiff (N)=RxMasterTime of adjacent OAM message
(N)-RxMasterTime (N-1), N are the natural number more than 2, calculate the receiving time interval of the adjacent OAM message
The standard variance of MasterTimeDiff (N) obtains the receiving time interval set of the adjacent OAM message, is more than 3 by removal
The mode at the receiving time interval of the adjacent OAM message of a standard variance corrects the receiving time interval of the adjacent OAM message
Set calculates the average transmission time interval according to the receiving time interval of revised adjacent OAM message set.
Further, include frame time delay=(RxSlaveTime- than changing the frame time delay using the crystal oscillator
TxMasterTime-(TxSlaveTime–RxMasterTime)*TimeRatio)/2。
Another aspect of the present invention also provides a kind of frame time delay detecting method, which is characterized in that including receiving terminal is received and solved
The OAM message that transmitting terminal is sent is analysed, if the OAM message belongs to frame time delay detection message, according to the OAM message to the transmitting terminal
Send response message, wherein the response message include the OAM message receiving time sequence information RxMaster Time and
The sending time sequence information TxSlave Time of the response message.
Another aspect of the present invention also provides a kind of frame time delay detection system, which is characterized in that including transmitting terminal and receiving terminal,
Wherein：Transmitting terminal, for the receiving terminal send OAM message and record send the OAM message sending time sequence information
TxMasterTime, the OAM message carry the information for identifying that the OAM message is frame time delay detection message, which is
802.3ah protocol massages；Transmitting terminal is additionally operable to receive the response message that the receiving terminal is fed back according to the OAM message, records the sound
Answer the receiving time sequence information RxSlaveTime of message, wherein carry the receiving terminal in the response message and receive the OAM
The receiving time sequence information RxMasterTime of message and the sending time sequence information for sending the response message
TxSlaveTime；According to TxMasterTime, RxMasterTime, TxSlaveTime, RxSlaveTime calculates tested network
Frame time delay；Receiving terminal, the OAM message for receiving and parsing through transmitting terminal transmission, if the OAM message belongs to frame time delay detection
Message sends response message, wherein when the response message includes the reception of the OAM message according to the OAM message to the transmitting terminal
Between the sending time sequence information TxSlave Time of sequence information RxMaster Time and the response message.
By the present invention in that on 802.3ah consensus standards, the new type of code for defining protocol Data Unit, in agreement
Data field transmitting terminal and the corresponding time serial message of receiving terminal is added, pass through protocol interaction and obtain receiving terminal processing delay, report
Literary transmission time, and then frame time delay is calculated.Solve in the prior art 802.3ah consensus standards do not support measuring frame delay from
And the problem of link performance can not be tested comprehensively.In the prior art because of the clock of transmitting terminal and receiving device, generally there are
, that is, there is clock frequency and phase difference in nonsynchronous situation, when calculating frame delay need to the clock of local terminal and remote equipment into
Row correction.After clock correction, timestamp is carried by protocol package, you can more accurate amendment frame time delay is calculated, is used for
Link performance, therefore this specification preferred embodiment are judged, is also had without receiving terminal and transmitting terminal time synchronization, you can right
The clock of transmitting terminal and receiving device is corrected, and improves the technique effect of measuring frame delay precision.
Description of the drawings
Fig. 1 is a kind of frame time delay detecting method transmitting terminal flow chart of this specification preferred embodiment；
Fig. 2 is a kind of OMA message structures schematic diagram of this specification preferred embodiment；
Fig. 3 is a kind of frame time delay detecting method receiving terminal flow chart of this specification preferred embodiment；
Fig. 4 is a kind of frame time delay detection system of this specification preferred embodiment；
Specific implementation mode
Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without being used to describe specific sequence or precedence.
One aspect of the present invention provided a kind of frame time delay detecting method, and Fig. 1 is a kind of frame of this specification preferred embodiment
Time delay detecting method transmitting terminal flow chart, as shown in Figure 1, including：
S101：Transmitting terminal sends OAM message to receiving terminal and records the sending time sequence information of the transmission OAM message
TxMasterTime, the OAM message carry the information for identifying that the OAM message is frame time delay detection message, which is
802.3ah protocol massages；
S102：The transmitting terminal receives the response message that the receiving terminal is fed back according to the OAM message, records the response message
Receiving time sequence information RxSlaveTime, wherein carry the receiving terminal in the response message and receive connecing for the OAM message
It receives time serial message RxMasterTime and sends the sending time sequence information TxSlaveTime of the response message；
S103：The transmitting terminal is counted according to TxMasterTime, RxMasterTime, TxSlaveTime, RxSlaveTime
Calculate the frame time delay of tested network.
Further, the Code words that the information that the OAM message is frame time delay detection message is located in the OAM message are identified
Section.
Fig. 2 is a kind of OMA message structures schematic diagram of this specification preferred embodiment, as shown in Fig. 2, the technology of the present invention
Scheme uses the Code fields of OAM Protocol Data Unit, a type is chosen from 0x5-0xFD Retention Types, for handling frame
Time-delay calculation；This specification preferred embodiment may include sequence according to data buffer zone format defined in new Code types
The data such as row number and time serial message, time serial message can be 4 octet fields, and format can refer to IEEE
TimeRepresentation in 1588-2008, but be also not limited, other forms format can be used.
Further, transmitting terminal calculates frame time delay=(RxSlaveTime-TxMasterTime- of tested network
(TxSlaveTime–RxMasterTime))/2。
Further, which also carries sequence number, the response message which feeds back according to the OAM message
Carry sequence number identical with the OAM message.Identical sequence number can effectively distinguish multiple OAM feedback messages and response is reported
Text.
Further, after transmitting terminal receives the response message, further include：The receiving time sequence of the response message is believed
Breath RxSlaveTime is added in the response message, wherein the response message also carries the sending time sequence of the OAM message
Column information TxMasterTime.
Further, in the transmitting terminal according to TxMasterTime, RxMasterTime, TxSlaveTime,
After RxSlaveTime calculates the frame time delay of tested network, this method further includes：
Transmitting terminal calculates that the transmitting terminal sends the average transmission time interval of N number of OAM message and the receiving terminal receives the N
The average received time interval of a OAM message；
For transmitting terminal by the time interval ratio of the be averaged transmission time interval and the average received time interval, calculating should
The ratio TimeRatio of clock crystal oscillator frequency between transmitting terminal and the receiving terminal；
Transmitting terminal corrects the frame time delay using the ratio TimeRatio of the clock crystal oscillator frequency.
Since transmitting terminal and receiving device clock are there are nonsynchronous situation, clock there are the difference of frequency, phase
Difference.To improve the computational accuracy of frame time delay, need to carry out clock correction to transmitting terminal and receiving device.This specification is preferred
Embodiment can transmitting terminal sends the average transmission time interval of OMA messages and receiving terminal receives the flat of OMA messages according to calculating
Equal receiving time interlude interval ratio calculates the clock ratio of transmitting terminal and receiving terminal, can also pass through and calculates transmitting terminal
Send the average handling time interlude interval of the average transmission time interval and receiving terminal processing OMA messages of OMA messages
Ratio calculates the clock ratio of transmitting terminal and receiving terminal, and sending ending equipment receives the time of message and the time for sending response message
The difference of the two is transmitting terminal processing time interval, when can also send the average transmission of OMA messages by calculating transmitting terminal
Between interval and receiving terminal send response message average transmission time interval time interval ratio come calculate transmitting terminal with reception
The clock ratio at end carries out clock correction to the equipment of transmitting terminal and receiving terminal.
Further, the average received time interval for calculating receiving terminal reception OMA messages can be there are two types of mode, the first
Mode is：
Transmitting terminal sends N number of OAM message within the preset time；According to the 1st OAM message sending time sequence
The mathematic interpolation of the column information and n-th the OAM message sending time sequence information average transmission time interval
MasterTimeDiff (N)=(TxMasterTime (N)-TxMasterTime (1))/N, N are the natural number more than 2；
Transmitting terminal receives N number of response message, and the 1st is received according to the receiving terminal carried in the 1st response message
The receiving terminal carried in the receiving time sequence information and n-th of the OAM message response message receives n-th OAM reports
The mathematic interpolation average received time interval SlaveTimeDiff (N) of the receiving time sequence information of text=
(RxMasterTime (N)-RxMasterTime (1))/N, N are the natural number more than 2.
The second way is：The transmitting terminal sends N number of OAM message within the preset time, calculates the adjacent OAM
The transmission time interval MasterTimeDiff (N) of message=TxMasterTime (N)-TxMasterTime (N-1), N is big
In 2 natural number, the standard variance of transmission time interval MasterTimeDiff (N) is calculated, obtains adjacent OAM message hair
Time interval set is sent, this is corrected by way of the adjacent OAM message transmission time interval of removal more than 3 standard variances
OAM message transmission time interval set, when calculating this according to the revised OAM message transmission time interval set and averagely sending
Between be spaced；
The transmitting terminal receives N number of response message, and the OAM message is received according to the receiving terminal carried in the response message
Receiving time sequence information calculate receiving time interval SlaveTimeDiff (N)=RxMasterTime of adjacent OAM message
(N)-RxMasterTime (N-1), N are the natural number more than 2, calculate the receiving time interval of the adjacent OAM message
The standard variance of MasterTimeDiff (N) obtains the receiving time interval set of the adjacent OAM message, is more than 3 by removal
The mode at the receiving time interval of the adjacent OAM message of a standard variance corrects the receiving time interval of the adjacent OAM message
Set calculates the average transmission time interval according to the receiving time interval of revised adjacent OAM message set.
Further, crystal oscillator than being by way of being verified, frame time delay=(RxSlaveTime-
TxMasterTime-(TxSlaveTime–RxMasterTime)*TimeRatio)/2。
The present invention also provides a kind of frame time delay detecting method, Fig. 3 is a kind of frame time delay inspection of this specification preferred embodiment
Survey method receiving terminal flow chart, as shown in figure 3,
S301：Receiving terminal receives and parses through the OAM message of transmitting terminal transmission；
S302：If the OAM message belongs to frame time delay detection message sends response report according to the OAM message to the transmitting terminal
Text, wherein the response message includes the receiving time sequence information RxMaster Time and the response message of the OAM message
Sending time sequence information TxSlave Time.
The present invention also provides a kind of frame time delay detection system, Fig. 4 is a kind of frame time delay inspection of this specification preferred embodiment
Examining system, as shown in figure 4, including transmitting terminal and receiving terminal, wherein：
Transmitting terminal, for the receiving terminal send OAM message and record send the OAM message sending time sequence information
TxMasterTime, the OAM message carry the information for identifying that the OAM message is frame time delay detection message, which is
802.3ah protocol massages；It is additionally operable to receive the response message that the receiving terminal is fed back according to the OAM message, records the response message
Receiving time sequence information RxSlaveTime, wherein carry the receiving terminal in the response message and receive the OAM message
The receiving time sequence information RxMasterTime and sending time sequence information TxSlaveTime for sending the response message；
According to the TxMasterTime, the RxMasterTime, the TxSlaveTime, which calculates the frame of tested network
Time delay.
Receiving terminal, the OAM message for receiving and parsing through transmitting terminal transmission, if the OAM message belongs to frame time delay detection
Message sends response message, wherein when the response message includes the reception of the OAM message according to the OAM message to the transmitting terminal
Between the sending time sequence information TxSlave Time of sequence information RxMaster Time and the response message.
This specification further includes a kind of preferred embodiment, and Fig. 2 is a kind of OMA message structures of this specification preferred embodiment
Schematic diagram, as shown in Fig. 2, in 802.3ah consensus standards, the message class of Code fields 0x0-0x04,0xFE defined OAM
Type, Information messages (0x0), Loopback Control messages (0x4) etc..0x05-0xFD is to retain in Code fields
Field.The present embodiment newly defines Code field 0x08, the calculating for handling frame time delay；Seq sequence numbers are 14 bit byte words
Section；It reports at the ends the Master end message sending time TxMasterTime, the Master ends message receiving time RxSlaveTime, Slave
Literary sending time TxSlaveTime, the ends Slave message receiving time RxMasterTime, above-mentioned 4 timestamps are 48 words
Field is saved, format is the format of TimeRepresentation in IEEE 1588-2008；
It is as follows that this preferred embodiment calculates remote equipment processing delay:
Master end equipments carry out a message interaction with Slave end equipments, and Slave end equipments receive the ends Master hair
At the time of the OAM message sent, store RxMasterTime fields, the ends Slave processing OAM message and at the time of send, store to
TxSlaveTime fields.Master terminations receive the OAM message that the ends Slave are sent out, and are filled in messages according to the ends Slave
Timestamp calculates remote equipment processing delay SlaveProcessTime, i.e.,：SlaveProcessTime=TxSlaveTime-
RxMasterTime
The clock ratio of local device and remote equipment is calculated again：Master end equipments send N number of OAM in Fixed Time Interval
The time interval of message, adjacent message is MasterTimeDiff (N), i.e.,：
MasterTimeDiff (N)=TxMasterTime (N)-TxMasterTime (N-1)
Slave end equipments receive N number of OAM message, and the time interval of adjacent message is SlaveTimeDiff (N), i.e.,：
SlaveTimeDiff (N)=RxMasterTime (N)-RxMasterTime (N-1)
Calculate the standard deviation of the N-1 transmission time interval at the ends Master/Slave：
Wherein s is standard deviation, and x (i) is TxMasterTime (N) or RxMasetrTime (N), is sequence 1-N's
The average value of TxMasterTime or RxMasetrTime is rejected according to 3Sigma except section [- 3s ,+3s]
The numerical value of MasterTimeDiff (N) or SlaveTimeDiff (N) use the data MasterTimeDiff after filtering
(update)/SlaveTimeDiff (update) carries out the calculating of clock ratio.
Master end equipments and the clock ratio TimeRatio of Slave end equipments are：
TimeRatio=MasterTimeDiff (update)/SlaveTimeDiff (update)
Clock ratio TimeRatio is used to correct the clock frequency difference between local device and remote equipment, can roll
Update calculates the clock ratio of local device and remote equipment：
Because of state when system operation, the reading of system time, therefore the message time that software is read are influenced, is calculated
The clock ratio arrived, changes over time, the calculating of the clock ratio of N+M sequence of message, uses m-th sequence of message to N+
The time of the sequence of message of M is calculated, and the historical statistical data of the 1-M sequence of message is all given up, then carries out clock ratio
It calculates；
Then the remote equipment processing delay CorrSlaveProcessTime after being corrected, i.e.,：
CorrSlaveProcessTime=SlaveProcessTime*TimeRatio
Frame time delay finally is corrected to calculating, is proceeded by from sequence of message N+1 and calculates frame time delay, Master end equipments are sent
At the time of OAM message, stores to TxMasterTime and is stored to RxSlaveTime at the time of the ends Master receive OAM message,
It is RoundTripTime that the ends Master, which are sent to and receive message time, i.e.,：
RoundTripTime=RxSlaveTime-TxMasterTime
According to revised Slave end equipments processing delay CorrSlaveProcessTime, propagation delay time is calculated
FrameDelayTime, i.e.,：
FrameDelayTime=(RoundTripTime-CorrSlaveProcessTime)/2
Frame time delay FrameDelayTime obtained by calculation, operation and maintenance personnel is according between different direct-connected devices
Propagation delay time requirement effectively can carry out comprehensive accurate judgement to link-quality, determine whether link-quality meets engineering reality
Apply requirement.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be with different from shown in sequence execution herein
The step of going out or describing, either they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
Above this is merely a preferred embodiment of the present invention, and is not intended to restrict the invention, for the technology of this field
For personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of frame time delay detecting method, which is characterized in that including：
Transmitting terminal sends the sending time sequence information that OAM message and recording sends the OAM message to receiving terminal
TxMasterTime, the OAM message carry the information for identifying that the OAM message is frame time delay detection message, the OAM reports
Text is 802.3ah protocol massages；
The transmitting terminal receives the response message that the receiving terminal is fed back according to the OAM message, records the response message
Receiving time sequence information RxSlaveTime, wherein carry the receiving terminal in the response message and receive the OAM reports
The receiving time sequence information RxMasterTime of text and the sending time sequence information for sending the response message
TxSlaveTime；
The transmitting terminal nets the RxMasterTime, the TxSlaveTime according to the TxMasterTime, described
RxSlaveTime calculates the frame time delay for being tested network.
2. according to the method described in claim 1, it is characterized in that, the mark OAM message is frame time delay detection message
Information be located at the Code fields in the OAM message.
3. according to the method described in claim 1, it is characterized in that, the transmitting terminal in the following manner according to described in
TxMasterTime, the RxMasterTime, the TxSlaveTime, the RxSlaveTime calculate the frame of tested network
Time delay：
Frame time delay=(RxSlaveTime-TxMasterTime- (TxSlaveTimeRxMasterTime))/2.
4. according to the method described in claim 1, it is characterized in that, the OAM message also carries sequence number, the receiving terminal
The response message fed back according to the OAM message carries sequence number identical with the OAM message.
5. wanting the method described in 1 according to right, which is characterized in that after the transmitting terminal receives the response message, further include：
The receiving time sequence information RxSlaveTime of the response message is added in the response message, wherein the response
Message also carries the sending time sequence information TxMasterTime of the OAM message.
6. according to the method described in claim 1, it is characterized in that, in the transmitting terminal according to the TxMasterTime, institute
RxMasterTime, the TxSlaveTime are stated, after the RxSlaveTime calculates the frame time delay of tested network, the side
Method further includes：
The transmitting terminal calculates the transmitting terminal and sends the average transmission time interval of N number of OAM message and the receiving terminal
Receive the average received time interval of N number of OAM message；
The transmitting terminal passes through the time interval ratio of the average transmission time interval and the average received time interval, meter
Calculate the ratio TimeRatio of clock crystal oscillator frequency between the transmitting terminal and the receiving terminal；
The transmitting terminal corrects the frame time delay using the ratio TimeRatio of the clock crystal oscillator frequency.
7. according to the method described in claim 6, it is characterized in that, the transmitting terminal calculating transmitting terminal transmission is N number of described
The average transmission time interval and the receiving terminal of OAM message receive the side of the average received time interval of N number of OAM message
Formula is：
The transmitting terminal sends N number of OAM message within the preset time；When being sent according to the 1st OAM message
Between OAM message sending time sequence information described in sequence information and n-th mathematic interpolation described in average transmission time interval
MasterTimeDiff (N)=(TxMasterTime (N)-TxMasterTime (1))/N, N are the natural number more than 2；
The transmitting terminal receives N number of response message, is received according to the receiving terminal carried in the 1st response message
The receiving terminal carried in response message described in the receiving time sequence information and n-th of 1st OAM message receives the
Average received time interval SlaveTimeDiff described in the mathematic interpolation of the receiving time sequence information of N number of OAM message
(N)=(RxMasterTime (N)-RxMasterTime (1))/N, N are the natural number more than 2.
8. according to the method described in claim 6, it is characterized in that, the transmitting terminal calculating transmitting terminal transmission is N number of described
The average transmission time interval and the receiving terminal of OAM message receive the side of the average received time interval of N number of OAM message
Formula is：
The transmitting terminal sends N number of OAM message within the preset time, calculates the transmission of the adjacent OAM message
Time interval MasterTimeDiff (N)=TxMasterTime (N)-TxMasterTime (N-1), N are the nature more than 2
Number, calculates the standard variance of the transmission time interval MasterTimeDiff (N), when obtaining the adjacent OAM message transmission
Between be spaced set, corrected in such a way that removal is more than the adjacent OAM message transmission time interval of 3 standard variances described
OAM message transmission time interval set calculates the average hair according to the revised OAM message transmission time interval set
Send time interval；
The transmitting terminal receives N number of response message, according to the receiving terminal reception carried in the response message
The receiving time sequence information of OAM message calculate the receiving time interval SlaveTimeDiff (N) of adjacent OAM message=
RxMasterTime (N)-RxMasterTime (N-1), N are the natural number more than 2, calculate the reception of the adjacent OAM message
The standard variance of time interval MasterTimeDiff (N) obtains the receiving time interval set of the adjacent OAM message, leads to
The mode that removal is crossed more than the receiving time interval of the adjacent OAM message of 3 standard variances corrects the adjacent OAM message
Receiving time interval set, according to the receiving time interval of the revised adjacent OAM message set calculate it is described average
Transmission time interval.
9. according to the method described in claim 6, it is characterized in that, including than changing the frame time delay using the crystal oscillator：
Frame time delay=(RxSlaveTime-TxMasterTime- (TxSlaveTime RxMasterTime) * TimeRatio)/
2。
10. a kind of frame time delay detecting method, which is characterized in that including:
Receiving terminal receives and parses through the OAM message of transmitting terminal transmission, if the OAM message belongs to frame time delay detection message, root
Response message is sent to the transmitting terminal, wherein the response message includes the reception of the OAM message according to the OAM message
The sending time sequence information TxSlave Time of time serial message RxMaster Time and the response message.
11. a kind of frame time delay detection system, which is characterized in that including transmitting terminal and receiving terminal, wherein：
The transmitting terminal, for sending the sending time sequence that OAM message and recording sends the OAM message to the receiving terminal
Information TxMasterTime, the OAM message carries the information for identifying that the OAM message is frame time delay detection message, described
OAM message is 802.3ah protocol massages；
The transmitting terminal is additionally operable to receive the response message that the receiving terminal is fed back according to the OAM message, records the response
The receiving time sequence information RxSlaveTime of message, wherein carried in the response message described in the receiving terminal reception
The receiving time sequence information RxMasterTime of OAM message and the sending time sequence information for sending the response message
TxSlaveTime；According to the TxMasterTime, the RxMasterTime, the TxSlaveTime are described
RxSlaveTime calculates the frame time delay of tested network；
The receiving terminal, the OAM message for receiving and parsing through transmitting terminal transmission, if the OAM message belongs to the inspection of frame time delay
Text is observed and predicted, response message is sent to the transmitting terminal according to the OAM message, wherein the response message is reported comprising the OAM
The receiving time sequence information RxMaster Time of the text and sending time sequence information TxSlave of the response message
Time。
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| WO2021004005A1 (en) * | 2019-07-10 | 2021-01-14 | 烽火通信科技股份有限公司 | Timestamp jitter compensation method and system |
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| WO2022148270A1 (en) * | 2021-01-05 | 2022-07-14 | 大唐移动通信设备有限公司 | Method for measuring and feeding back delay information, communication device, apparatus, and storage medium |
| CN115002006A (en) * | 2022-04-27 | 2022-09-02 | 北京中睿天下信息技术有限公司 | Network equipment time delay testing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021004005A1 (en) * | 2019-07-10 | 2021-01-14 | 烽火通信科技股份有限公司 | Timestamp jitter compensation method and system |
| CN112714007A (en) * | 2019-10-24 | 2021-04-27 | 烽火通信科技股份有限公司 | Method and device for detecting service message dyeing marks of all IOAM (input/output access am) equipment |
| CN112714007B (en) * | 2019-10-24 | 2022-07-01 | 烽火通信科技股份有限公司 | Method and device for detecting service message dyeing marks of all IOAM (input/output access am) equipment |
| WO2022148270A1 (en) * | 2021-01-05 | 2022-07-14 | 大唐移动通信设备有限公司 | Method for measuring and feeding back delay information, communication device, apparatus, and storage medium |
| WO2023035776A1 (en) * | 2021-09-13 | 2023-03-16 | 华为技术有限公司 | Communication method, related apparatus, and storage medium |
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