CN207884639U - A kind of network node, temporal noise transmission characteristic measuring device and synchronous communication network - Google Patents
A kind of network node, temporal noise transmission characteristic measuring device and synchronous communication network Download PDFInfo
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- CN207884639U CN207884639U CN201820241882.4U CN201820241882U CN207884639U CN 207884639 U CN207884639 U CN 207884639U CN 201820241882 U CN201820241882 U CN 201820241882U CN 207884639 U CN207884639 U CN 207884639U
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Abstract
The utility model embodiment is related to a kind of network node, temporal noise transmission characteristic measuring device and synchronous communication network, the network node：Transceiver communication device；First lock cell is used for locked clock source signal, obtains reference clock signal；Noise generator, for generating noise；Second lock cell, the message sent for obtaining other network nodes that the transceiver communication device receives, noise is added to the original time stamp of the message, and the clock of other network nodes is synchronized according to the timestamp after superimposed noise, obtains recovered clock signal；Time comparing unit, the time difference for obtaining reference clock signal and recovered clock signal；Controller for being sampled to the time difference, and obtains the noise between the network node and other described network nodes according to each sampled value and transmits information.The utility model embodiment need not be using external expensive measuring instrument come the transmission characteristic of time of measuring noise, and cost is relatively low.
Description
Technical field
The utility model embodiment is related to network communication technology field, more particularly to a kind of network node, temporal noise
Transmission characteristic measuring device and synchronous communication network.
Background technology
In a communication network, perhaps multiple services normal operation require network clocking synchronize, i.e., each equipment of whole network it
Between time or difference on the frequency be maintained in rational error level.Precision Time Protocol (Precision Time Protocol,
PTP) it is a kind of agreement of time synchronization, the precise synchronization being used between equipment.To the biography of noise in communication system
Stringent limitation is passed, each network node in communication system is required for being filtered noise.And PTP is as communication system
The noise characteristic of the important component of system, output time also has strict demand.Currently, being to use special apparatus measures
The transmission characteristic of PTP noises, but instrument price is expensive, cost is higher.
Utility model content
The purpose of the utility model embodiment is to provide a kind of lower network node of testing cost, temporal noise transmit it is special
Property measuring device and synchronous communication network.
In order to solve the above technical problems, the technical solution that the utility model embodiment uses is：
A kind of network node, the network node include：
Transceiver communication device, the transceiver communication device is used to receive clock source signals, and sends and receivees message；
First lock cell, first lock cell are electrically connected with the transceiver communication device, are used for locked clock
Source signal obtains reference clock signal；
Noise generator, for generating noise；
Second lock cell, second lock cell are electric with the transceiver communication device and the noise generator respectively
Property connection, the message sent for obtaining other network nodes that the transceiver communication device receives, by the noise generator
The noise of generation is added to the original time stamp of the message, and according to the timestamp after superimposed noise synchronize it is described other
The clock of network node, obtains recovered clock signal, other described network nodes also lock the clock source signals；
Time comparing unit, the time comparing unit are distinguished with first lock cell and second lock cell
It is electrically connected, the time difference for obtaining the reference clock signal and the recovered clock signal；
Controller, the controller is electrically connected with the time comparing unit, for being adopted to the time difference
Sample, and the noise between the network node and other described network nodes is obtained according to each sampled value and transmits information.
Optionally, the network node further includes filter, and the filter is electrically connected at second lock cell
Between the time comparing unit, the filter is used to filter the noise in the recovered clock signal, the controller
It is also electrically connected with the filter, the controller is additionally operable to transmit the ginseng of filter described in Information revision according to the noise
Number.
Optionally, the controller is also communicated to connect with display device, so that the display device shows that the noise passes
Pass information.
Optionally, the clock source signals are GPS clock signal.
Optionally, first lock cell is phase-locked loop circuit.
Optionally, the time comparing unit is comparator.
In order to solve the above technical problems, another technical solution that the utility model embodiment uses is：
Temporal noise transmission characteristic measuring device is used for network node, the network node and other at least one networks
Node communicates to connect, and described device includes：
First lock cell, first lock cell are used to electrically connect with the transceiver communication device of the network node
It connects, is used for locked clock source signal, obtain reference clock signal；
Noise generator, for generating noise；
Second lock cell, second lock cell are electric with the transceiver communication device and the noise generator respectively
Property connection, the message sent for obtaining other network nodes that the transceiver communication device receives, by the noise generator
The noise of generation is added to the original time stamp of the message, and according to the timestamp after superimposed noise synchronize it is described other
The clock of network node, obtains recovered clock signal, other described network nodes also lock the clock source signals；
Time comparing unit, the time comparing unit are distinguished with first lock cell and second lock cell
It is electrically connected, the time difference for obtaining the reference clock signal and the recovered clock signal；
Controller, the controller is electrically connected with the time comparing unit, for being adopted to the time difference
Sample, and the noise between the network node and other described network nodes is obtained according to each sampled value and transmits information.
Optionally, the measuring device further includes filter, and the filter is electrically connected at second lock cell
Between the time comparing unit, the filter is used to filter the noise in the recovered clock signal, the controller
It is also electrically connected with the filter, the controller is additionally operable to transmit the ginseng of filter described in Information revision according to the noise
Number.
Optionally, the controller is also communicated to connect with display device, so that the display device shows that the noise passes
Pass information.
In order to solve the above technical problems, another technical solution that the utility model embodiment uses is：
A kind of synchronous communication network, the communication network include at least two above-mentioned network nodes.
The advantageous effect of the utility model embodiment is：The case where being different from the prior art, the utility model embodiment are logical
It crosses from the locally generated noise of network node, and the original time stamp for the master network node message of reception that the noise is added to
On, the clock that master network node is then synchronized according to the timestamp by distorting obtains the recovered clock signal for carrying noise.Lock
Timing clock source signal obtains reference clock signal, because same clock source letter should be based on from network node and master network node
Number, therefore the gain i.e. master network node of the noise can be obtained to from network according to reference clock signal and recovered clock signal
The noise of node transmits information.It need not be using external expensive measuring instrument come the transmission characteristic of time of measuring noise, cost
It is relatively low.
Description of the drawings
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element with same reference numbers label is expressed as similar element in attached drawing, removes
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is the application scenarios schematic diagram of measuring device and network node that the utility model embodiment provides；
Fig. 2 is the hardware architecture diagram for the network node that the utility model embodiment provides；
Fig. 3 is the hardware architecture diagram for the network node that the utility model embodiment provides；
Fig. 4 is the hardware architecture diagram for the network node that the utility model embodiment provides.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only explaining this
Utility model is not used to limit the utility model.
It should be noted that when element is expressed " being fixed on " another element, it can directly on another element,
Or may exist one or more elements placed in the middle therebetween.When an element is expressed " connection " another element, it can be with
It is directly to another element or may exist one or more elements placed in the middle therebetween.Used in this specification
Term " vertically ", " horizontal ", "left", "right" and similar statement are for illustrative purposes only.
Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model
The normally understood meaning of technical staff in art field is identical.Art used in the description of the utility model in this specification
Language, which is only for the purpose of describing specific embodiments, is not intended to limitation the utility model.Term used in this specification
"and/or" includes any and all combinations of one or more relevant Listed Items.
When the network node of the utility model embodiment offer, temporal noise transmission characteristic measuring device can be used for PTP
Between noise transmission characteristic measurement, be suitable for application scenarios as shown in Figure 1.The application scenarios include multiple network nodes 10
With reference clock source 20, each network node 10 locks clock source signals that reference clock source 20 sends out and (such as passes through locking phase
Ring locked clock source signal), wherein such as global positioning system of reference clock source 20 (Global Positioning
System, GPS) clock source, Beidou satellite navigation system clock source etc..
Each network node 10 can be used as PTP master network nodes, for issuing synchronization time, can also be used as PTP from
Network node, for receiving synchronization time.PTP master networks node and PTP are based on same reference clock source from network node
20.PTP obtains reference clock signal, another party from the network node clock source signals that on the one hand locking reference clock source 20 is sent out
Face is from the locally generated noise of network node, and the original time for the master network node message of reception that the noise is added to
Stamp, when then synchronizing the recovery of clock acquisition carrying noise of PTP master network nodes according to the timestamp after superimposed noise
Clock signal, the reference clock signal and the recovered clock signal for carrying noise, can obtain the increasing of temporal noise
Benefit is the transmission information of PTP master networks node and PTP from temporal noise between network node.
Structure shown in Fig. 2 may be used in above-mentioned network node 10, as shown in Fig. 2, the network node 10 includes：
Transceiver communication device 11, the first lock cell 12, the second lock cell 14, noise generator 16, time are more single
Member 15 and controller 13, transceiver communication device 11 are electrically connected with the first lock cell 12 and the second lock cell 14, make an uproar respectively
Acoustic generator 16 and the second lock cell 14 are electrically connected, the first lock cell 12 and the second lock cell 14 also respectively with the time
Comparing unit 15 is electrically connected, and time comparing unit 15 and controller 13 are electrically connected.
Transceiver communication device 11 is used to receive the clock source signals of the transmission of reference clock source 20, and sends and receivees report
Text, the first lock cell 12 are used for locked clock source signal, obtain reference clock signal, and noise generator 16 is made an uproar for generating
Sound, the second lock cell 14 are used to control transceiver communication device 11 and receive the message that other network nodes are sent, noise is occurred
The noise that device 16 generates is added to the original time stamp of the message, and is synchronized according to the timestamp after superimposed noise described
The clock of other network nodes obtains recovered clock signal.Time comparing unit 15 for obtain the reference clock signal and
The time difference of the recovered clock signal.Controller 13 is used to sample the time difference, and according to each sampled value
The noise obtained between the network node and other described network nodes transmits information.
Wherein, phase-locked loop circuit may be used in the first lock cell 12, and comparator may be used in time comparing unit 15, the
The processor with certain processing capacity may be used in two lock cells 14, and MCU may be used in controller 13.
Wherein, the method for obtaining recovered clock signal is the prior art, and the request-reply machine based on PTP protocol may be used
System or end delay strategy obtain, and below illustrate how noise being added to the original of message by taking request-reply mechanism as an example
Timestamp.
Master network node sends Sync messages to from network node, and records sending time t1；This is received from network node
After message, receiving time t2 is recorded.After master network node sends Sync messages, the Follow_Up messages for carrying t1 are sent.From
Network node sends Delay_Req messages to master network node, and records sending time t3；Master network node receives the message
Afterwards, record receiving time t4.After master network node receives Delay_Req messages, a Delay_ for carrying t4 is replied
Resp messages.At this point, having tetra- timestamps of t1-t4 from network node, major network can be calculated by four timestamps
Network node and from round-trip total delay [(t2-t1)+(t4-t3)] between network node, it is assumed that network is symmetrical, then from network section
The time deviation of point and master network node is [(t2-t1)+(t4-t3)]/2, it is possible thereby to obtain the extensive of synchronous master network node
Multiple clock.
According to whether send Follow_Up messages, request-reply mechanism is divided into as single-step mode and two-step pattern,
Under single-step mode, the sending time stamp t1 of Sync messages is carried by Sync messages oneself, Follow_Up messages is not sent, double
Under step mode, the sending time stamp t1 of Sync messages is carried by Follow_Up messages.
By taking single-step mode as an example, on the timestamp t1 or t2 of Sync messages that this Earth noise can be added to, specifically,
From network node after receiving Sync messages, this Earth noise can be extracted with suitable sample rate (how need to meet Si Tedinglv)
The corresponding value of current phase, and the value is added on t1 or t2.It in other embodiments, can also be by locally generated noise
It is added on t3 or t4.
Carrying can be obtained using the method for above-mentioned acquisition recovered clock signal according to the timestamp after superimposed noise
The recovered clock signal of noise.Since the reference clock signal and the recovered clock signal for carrying noise are based on for the moment
Clock source signal, the reference clock signal and the recovered clock signal for carrying noise can be obtained the biography of the noise
Pass characteristic.Specifically, the time difference of the reference clock signal and the recovered clock signal for carrying noise can first be obtained
Value, then samples each time difference, obtains time difference curve.The peak value of the time difference curve is obtained, it will
The peak value is compared the gain i.e. noise transmission information that can be obtained the noise with raw noise.The acquisition signal gain
Method also be the prior art, do not describe excessively herein.
The utility model embodiment is added to reception by from the locally generated noise of network node, and by the noise
In the original time stamp of master network node message, the clock that master network node is then synchronized according to the timestamp by distorting obtains
Carry the recovered clock signal of noise.Locked clock source signal obtains reference clock signal, because should be from network node and major network
Network node is based on same clock source signals, therefore can be obtained the noise according to reference clock signal and recovered clock signal
Gain, that is, master network node transmits information to from the noise of network node.It need not be measured using external expensive measuring instrument
The transmission characteristic of temporal noise, cost are relatively low.
Further, after obtaining recovered clock signal, the noise in signal can be filtered, Fig. 3 is please referred to, in network
In the other embodiment of node, network node 10 further includes filter 17, and the filter 17 is electrically connected at the second locking list
Between member 14 and time comparing unit 15.After obtaining the noise and transmitting information, it can also show that the noise transmits information,
To provide reference, alternatively, directly transmitting the parameter of Information revision filter 17 according to the noise.It can also both show that the noise passed
Pass information, and the parameter of correction wave filter 17 simultaneously.Fig. 3 is please referred to, in the other embodiment of network node, controller 13 is also
It is electrically connected with filter 17, controller 13 is additionally operable to transmit the parameter of Information revision filter 17 according to the noise.Control
Device 13 also communicates to connect (wired connection or wireless connection) with display device 30, so that display device 30 shows that the noise passes
Pass information.Wherein, display device 30 can be arranged in network node 10, can also be arranged outside network node 10.
In the prior art, the transmission characteristic of temporal noise is measured using special instrument, measurement result is measuring
End, cannot directly be utilized by each PTP network nodes.Noise can not only be transmitted information delay and is sent to by the utility model embodiment
Display end is monitored in real time, and the noise of acquisition can be transmitted to information real-time delivery to PTP from network node, so as to so that
The filter parameter of measurand is directly corrected from network node, forms closed-loop control.It should be noted that filter parameter is repaiied
Correction method belongs to the scope of the prior art, and details are not described herein.
Wherein, Fig. 4 is please referred to, the first lock cell 12, the second lock cell 14, time comparing unit 15, noise occur
Device 16 and controller 13 can also form individual temporal noise transmission characteristic measuring device 40, and noise generator 16 and second is locked
Order member 14 is electrically connected, and the first lock cell 12 and the second lock cell 14 are electrically connected with time comparing unit 15 respectively,
Time comparing unit 15 and controller 13 are electrically connected.In actual use, the measuring device 40 can be arranged in network section
Be electrically connected with the transceiver communication device 11 of network node 10 on point 10, transceiver communication device 11 respectively with the first lock cell 12
It is electrically connected with the second lock cell 14.Fig. 4 is please referred to, measuring device 40 further includes filter 17, and filter 17 is electrically connected
Between the second lock cell 14 and time comparing unit 15, for filtering the noise in recovered clock signal.Controller 13 is also
It is electrically connected with filter 17, controller 13 is additionally operable to transmit the parameter of Information revision filter 17 according to the noise.Control
Device 13 is also communicated to connect with display device 30, so that display device 30 shows that the noise transmits information.Implementation shown in Fig. 4
In example, measuring device 40 includes display device 30, and in the other embodiment of measuring device 40, measuring device 40 can not also
Including display device 30.
The utility model embodiment is added to reception by from the locally generated noise of network node, and by the noise
In the original time stamp of master network node message, the clock that master network node is then synchronized according to the timestamp by distorting obtains
Carry the recovered clock signal of noise.Locked clock source signal obtains reference clock signal, because should be from network node and major network
Network node is based on same clock source signals, therefore can be obtained the noise according to reference clock signal and recovered clock signal
Gain, that is, master network node transmits information to from the noise of network node.It need not be measured using external expensive measuring instrument
The transmission characteristic of temporal noise, cost are relatively low.
Fig. 1 is please referred to, the utility model embodiment additionally provides a kind of synchronous communication network, and the communication network includes extremely
Few two network nodes 10, the network node 10 can be the network node of any of the above-described embodiment description, particular technique
Details please refers to the description of above-mentioned network node, and details are not described herein.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are equally included in the patent within the scope of the utility model.
Claims (10)
1. a kind of network node, which is characterized in that the network node includes：
Transceiver communication device, the transceiver communication device is used to receive clock source signals, and sends and receivees message；
First lock cell, first lock cell are electrically connected with the transceiver communication device, are believed for locked clock source
Number, obtain reference clock signal；
Noise generator, for generating noise；
Second lock cell, second lock cell electrically connect with the transceiver communication device and the noise generator respectively
It connects, the message sent for obtaining other network nodes that the transceiver communication device receives generates the noise generator
Noise be added to the original time stamp of the message, and other described networks are synchronized according to the timestamp after superimposed noise
The clock of node, obtains recovered clock signal, other described network nodes also lock the clock source signals；
Time comparing unit, the time comparing unit and first lock cell and second lock cell difference are electrical
Connection, the time difference for obtaining the reference clock signal and the recovered clock signal；
Controller, the controller is electrically connected with the time comparing unit, for being sampled to the time difference, and
The noise between the network node and other described network nodes, which is obtained, according to each sampled value transmits information.
2. network node according to claim 1, which is characterized in that the network node further includes filter, the filter
Wave device is electrically connected between second lock cell and the time comparing unit, and the filter is described extensive for filtering
Noise in multiple clock signal, the controller are also electrically connected with the filter, and the controller is additionally operable to according to
Noise transmits the parameter of filter described in Information revision.
3. network node according to claim 1 or 2, which is characterized in that the controller also with display device communication link
It connects, so that the display device shows that the noise transmits information.
4. network node according to claim 1, which is characterized in that the clock source signals are GPS clock signal.
5. network node according to claim 1, which is characterized in that first lock cell is phase-locked loop circuit.
6. network node according to claim 1, which is characterized in that the time comparing unit is comparator.
7. a kind of temporal noise transmission characteristic measuring device is used for network node, the network node and other at least one nets
Network node communicates to connect, which is characterized in that described device includes：
First lock cell, first lock cell are used to be electrically connected with the transceiver communication device of the network node, use
In locked clock source signal, reference clock signal is obtained；
Noise generator, for generating noise；
Second lock cell, second lock cell electrically connect with the transceiver communication device and the noise generator respectively
It connects, the message sent for obtaining other network nodes that the transceiver communication device receives generates the noise generator
Noise be added to the original time stamp of the message, and other described networks are synchronized according to the timestamp after superimposed noise
The clock of node, obtains recovered clock signal, other described network nodes also lock the clock source signals；
Time comparing unit, the time comparing unit and first lock cell and second lock cell difference are electrical
Connection, the time difference for obtaining the reference clock signal and the recovered clock signal；
Controller, the controller is electrically connected with the time comparing unit, for being sampled to the time difference, and
The noise between the network node and other described network nodes, which is obtained, according to each sampled value transmits information.
8. measuring device according to claim 7, which is characterized in that the measuring device further includes filter, the filter
Wave device is electrically connected between second lock cell and the time comparing unit, and the filter is described extensive for filtering
Noise in multiple clock signal, the controller are also electrically connected with the filter, and the controller is additionally operable to according to
Noise transmits the parameter of filter described in Information revision.
9. measuring device according to claim 7 or 8, which is characterized in that the controller also with display device communication link
It connects, so that the display device shows that the noise transmits information.
10. a kind of synchronous communication network, which is characterized in that the communication network includes at least two claim 1-6 any one
Network node described in.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110138487A (en) * | 2018-02-09 | 2019-08-16 | 深圳市英特瑞半导体科技有限公司 | A kind of temporal noise transmission characteristic measurement method and network node |
| CN110336635A (en) * | 2019-06-11 | 2019-10-15 | 深圳市英特瑞半导体科技有限公司 | A kind of temporal noise transmission method, device and network node |
| CN111273538A (en) * | 2020-01-13 | 2020-06-12 | 广东大普通信技术有限公司 | Method and device for dynamically adapting clock noise and readable storage medium |
-
2018
- 2018-02-09 CN CN201820241882.4U patent/CN207884639U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110138487A (en) * | 2018-02-09 | 2019-08-16 | 深圳市英特瑞半导体科技有限公司 | A kind of temporal noise transmission characteristic measurement method and network node |
| CN110138487B (en) * | 2018-02-09 | 2024-01-12 | 深圳市英特瑞半导体科技有限公司 | Time noise transfer characteristic measurement method and network node |
| CN110336635A (en) * | 2019-06-11 | 2019-10-15 | 深圳市英特瑞半导体科技有限公司 | A kind of temporal noise transmission method, device and network node |
| CN110336635B (en) * | 2019-06-11 | 2021-03-02 | 深圳市英特瑞半导体科技有限公司 | Time noise transmission method, device and network node |
| CN111273538A (en) * | 2020-01-13 | 2020-06-12 | 广东大普通信技术有限公司 | Method and device for dynamically adapting clock noise and readable storage medium |
| CN111273538B (en) * | 2020-01-13 | 2021-12-10 | 广东大普通信技术有限公司 | Method and device for dynamically adapting clock noise and readable storage medium |
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