CN101741853B - Method for synchronizing clock time, line card veneer and network equipment - Google Patents
Method for synchronizing clock time, line card veneer and network equipment Download PDFInfo
- Publication number
- CN101741853B CN101741853B CN 200910253977 CN200910253977A CN101741853B CN 101741853 B CN101741853 B CN 101741853B CN 200910253977 CN200910253977 CN 200910253977 CN 200910253977 A CN200910253977 A CN 200910253977A CN 101741853 B CN101741853 B CN 101741853B
- Authority
- CN
- China
- Prior art keywords
- time
- clock signal
- line card
- veneer
- card veneer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Synchronisation In Digital Transmission Systems (AREA)
- Electric Clocks (AREA)
Abstract
The invention discloses a method for synchronizing clock time, a line card veneer and network equipment. The method comprises the following steps that: the line card veneer receives a time clock signal of a predetermined format, wherein the time clock signal comprises a clock signal and a time signal; and the predetermined format is a format which meets the requirement of a first network protocol; and the line card veneer regulates a local clock of the line card veneer according to the clock signal, regulates a local time value of the line card veneer according to the time signal, and forwards the time clock signal. The local clock is regulated according to the clock signal and the local time value is regulated according to the time signal, so related code implementation is less, and the method can simplify processing procedures, effectively reduce time delay of synchronization, avoid occupying a large amount of system resources, improve the efficiency of clock time synchronization, and ensure high accuracy of time synchronization by directly regulating the local clock and the local time value.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method, line card veneer and network equipment of synchronizing clock time.
Background technology
The network integration is to adopt the technology of General Open to realize merging, thereby reaches the purpose that takes full advantage of resource, enhances the competitiveness, and makes the user enjoy personalized service by simple mode.In present network, operator provides full-service operation by unified mode to the user, thereby improves the market share and profit.Along with the development of the network integration, Internet protocol (Internet Protocol is referred to as IP) technology is in new networking, and shared leading position is more and more obvious, and has been called the inexorable trend of following fusion development.
Ethernet take the IP technology as the basis relies on the characteristics such as simple, open, flexible, can merge voice, video and data communication, and become the construction thinking of current main-stream.In the process of carrying out the network integration, the transparent transmission of ethernet clock is the key factor that telecom operators need to consider, also is a crucial difficult problem.This is because the many application on the network have the inherent sequential requirement of the Network Synchronization of depending on, and there is different demands in different service application to clock synchronous, for example, time division multiplexing (TimeDivision Multiplexing at traditional fixed network, referred to as TDM) when business is passed through Ethernet bearing, if the clock at bearer network two ends is inconsistent, then be very easy to cause slip, cause TDM voice and data traffic transmission deterioration, even can make service disconnection.
Communication network is mainly reflected in the wireless application the demand of clock frequency, at IP Radio Access Network (Radio Access Network, referred to as RAN) in, frequency between the different base station must be synchronously in certain accuracy rating, otherwise the problem that business goes offline can appear when switching in the base station.And at PDH (Pseudo-synchronous Digital Hierarchy) (Plesiochronous Digital Hierarchy is referred to as PDH)/synchronous digital hierarchy (Synchronous Digital Hierarchy, referred to as SDH) in the communication system, clock synchronous is to guarantee that voice-and-data connects the key design factor of reliable and zero defect, although the PDH/SDH network shifts to packet-based IP/Ethernet framework, the requirement of network clocking can't change.
Under the trend of the whole network IPization, clock synchronization issue has become crucial technical bottleneck.Only on the IP/Ethernet network, successfully solve the problem of clock synchronous, just might build a multi-service fusion network based on the IP technology truly.
1588v2 is the clock standard of being formulated by AAEE (IEEE), in this standard, has defined packet network and has realized the synchronous technology of Time And Frequency.At TD SDMA (TimeDivision-Synchronous Code Division Multiple Access, referred to as TD-SCDMA) under the standard, and the mobile network is to Long Term Evolution (Long Term Evolution, referred to as LTE) after the system evolved, time synchronized has become the essential condition that promotes wireless frequency spectrum efficient.
In existing Time synchronization technique, the 1588v2 Clock Synchronization Technology efficiently solves GPS (Global Position System) (Global Positioning System, referred to as GPS) the clock input cost is large and hard problem is installed, and is that the mobile network is to the basis of LTE evolution.IEEE 1588v2 has proposed Precision Time Protocol (Precision Time Protocol is referred to as PTP), and it is in fact a kind of master-slave synchronisation system.In the synchronizing process of system, master clock cycle issue PTP time synchronization protocol and time information, receive the timestamp information that the master clock port is sent from clock port, system calculates accordingly principal and subordinate's wire time and postpones and principal and subordinate's time difference, and utilize this time difference to adjust local zone time, make from frequency and the phase place of equipment time maintenance with the main equipment time consistency.IEEE 1588 can realize Frequency Synchronization and time synchronized simultaneously.Wherein, the accuracy guarantee of time transmission mainly depends on the symmetry of counter frequency accuracy and link.
At present, the thinking of arranging net of mobile operator is: as initial clock source, the whole net time and clock of carrying online operation IEEE 1588v2 protocol synchronization can also be changed out GPS at network end-point and supply with the equipment uses such as base station by GPS.The time synchronized of GPS and IEEE 1588v2 (time conversion) generally just can realize by certain software and hardware system, but currently used Time Synchronizing often needs to spend the long processing time and takies more system resource, thereby reduced the efficient of synchronizing clock time, thereby and the professional problem of normally carrying out of the synchronously untimely impact of meeting time of occurrence, and, under other procotol amalgamation modes, there is equally similar problem.
, system resource long for the time synchronizing time between the heterogeneous networks in the correlation technique takies the problem that causes business normally to carry out more, not yet proposes at present effective solution.
Summary of the invention
, system resource long for the time synchronizing time between the heterogeneous networks in the correlation technique takies the problem that causes business normally to carry out more, the present invention proposes a kind of method, line card veneer and network equipment of synchronizing clock time, efficient that can the Effective Raise synchronizing clock time, reduce taking of system resource, avoid the time synchronized long time synchronized that causes consuming time that business is caused dysgenic problem.
Technical scheme of the present invention is achieved in that
A kind of method of synchronizing clock time is provided according to an aspect of the present invention.
Method according to synchronizing clock time of the present invention comprises: line card veneer receives the time clock signal of predetermined format, and wherein, the time clock signal comprises clock signal and time signal, and predetermined format refers to meet the form of the requirement of first network agreement; Line card veneer is adjusted the local clock of line card veneer according to clock signal, adjusts the local zone time value of line card veneer according to time signal, and forwarding time clock signal.
Wherein, line card veneer specifically comprises according to the processing of the local clock of clock signal adjustment line card veneer: line card veneer arranges local clock according to clock signal, makes local clock and clock signal synchronization after arranging.
In addition, the processing that line card veneer is adjusted the local zone time value of line card veneer according to time signal specifically comprises: line card veneer is determined time value in the time signal and the difference between the local zone time value, and according to difference correction local zone time.
Further, the time clock signal also comprises heartbeat signal, and before the local zone time value of adjusting line card veneer, the method also can comprise: line card veneer is determined the frequency of the local zone time value of adjustment line card veneer according to heartbeat signal.
On the one hand, the step of the time clock signal of line card veneer reception predetermined format is specially: line card veneer receives the time clock signal from the master control veneer transmission of the veneer place network equipment; The time clock signal that master control veneer sends is: the time clock signal of the requirement that meets the first network agreement after the time clock signal conversion of the requirement that meets the second network agreement that master control veneer is received.At this moment, the processing of line card veneer forwarding time clock signal specifically comprises: line card veneer sends to the time clock signal upstream device that adopts the first network agreement.
On the other hand, the processing of the time clock signal of line card veneer reception predetermined format is specifically as follows: line card veneer receives the time clock signal that sends from the upstream equipment that adopts the first network agreement.At this moment, the processing of line card veneer forwarding time clock signal specifically comprises: line card veneer is transmitted to the time clock signal master control veneer of the ply-yarn drill place network equipment, and by master control veneer the time clock signal is converted to the time clock signal of the requirement that meets the second network agreement, and the time clock signal after will changing sends to the upstream device that adopts the second network agreement.
And, in the network equipment at line card veneer place, comprise in the situation of a plurality of line card veneers, line card veneer further is transmitted to the time clock signal other line card veneers in the network equipment, carries out local clock adjustment and the adjustment of local zone time value for other line card veneers.
According to a further aspect in the invention, provide a kind of line card veneer.
Line card veneer according to the present invention comprises: receiver module, be used for to receive the time clock signal of predetermined format, and wherein, predetermined format refers to meet the form of the requirement of first network agreement; The first adjusting module is used for the local clock according to the clock signal adjustment line card veneer of time clock signal; The second adjusting module is used for the local zone time value according to the time signal adjustment line card veneer of time clock signal; Forwarding module is used for the forwarding time clock signal.
According on the one hand of the present invention, a kind of network equipment also is provided, this network equipment comprises at least one line card veneer and master control veneer.
Particularly, line card veneer comprises: receiver module, be used for to receive the time clock signal of predetermined format, and wherein, predetermined format refers to meet the form of the requirement of first network agreement; The first adjusting module is used for the local clock according to the clock signal adjustment line card veneer of time clock signal; The second adjusting module is used for the local zone time value according to the time signal adjustment line card veneer of time clock signal; Forwarding module is used for the forwarding time clock signal.
Master control veneer comprises: the conversion process module, be used for the time clock signal of the requirement that meets the second network agreement of its reception is converted to the time clock signal of the requirement that meets the first network agreement, and the time clock signal after will changing sends to line card veneer; And the time clock signal that is used for the requirement that meets the first network agreement that line card veneer is transmitted is converted to the time clock signal of the requirement that meets the second network agreement, and sends to the equipment that adopts the second network agreement.
Wherein, the time clock signal also comprises heartbeat signal, and heartbeat signal is used for determining to adjust the frequency of local zone time value, and the second adjusting module is used for adjusting the local zone time value according to the frequency of determining.
The present invention is by carrying out the adjustment of local clock according to clock signal, and adjusts the local zone time value according to time signal, and related code is realized less, can simplify processing procedure, effectively reduce synchronous time delay, avoid taking a large amount of system resources, improve the efficient of synchronizing clock time; And by directly adjusting local clock and local zone time value, can make time synchronized have higher accuracy.
Description of drawings
Fig. 1 is the flow chart according to the method for the synchronizing clock time of the inventive method embodiment;
Fig. 2 is according to the processing schematic diagram from the GPS network to 1588V2 network latency clock signal in the method for the synchronizing clock time of the inventive method embodiment;
Fig. 3 is according to the process chart that carries out synchronizing clock time in the method for the synchronizing clock time of the inventive method embodiment from the GPS network to 1588V2 network latency clock signal process;
Fig. 4 is according to the processing schematic diagram from the 1588V2 network to GPS network latency clock signal in the method for the synchronizing clock time of the inventive method embodiment;
Fig. 5 is according to the process chart that carries out synchronizing clock time in the method for the synchronizing clock time of the inventive method embodiment from the 1588V2 network to GPS network latency clock signal process.
Embodiment
, system resource long for the time synchronizing time between the heterogeneous networks in the correlation technique takies the problem that causes business normally to carry out more, the present invention proposes, in the network equipments such as rack, boxlike, line card veneer carries out the local clock adjustment according to clock signal, and according to time signal adjustment local zone time value, can be with the time synchronized between the simple processing mode realization heterogeneous networks, improved the efficient of synchronizing clock time, reduce taking of system resource, avoid the time synchronized long time synchronized that causes consuming time that business is caused dysgenic problem.
Below in conjunction with accompanying drawing, describe embodiments of the invention in detail.
Embodiment of the method
A kind of method of synchronizing clock time is provided in the present embodiment.
As shown in Figure 1, the method according to the synchronizing clock time of present embodiment comprises:
Step S101, line card veneer receives the time clock signal of predetermined format, wherein, the time clock signal comprises clock signal (bitclock) and time signal (timecode) (time signal can be understood as the step-length that clock is advanced), and predetermined format refers to meet the form of the requirement of first network agreement;
Step S103, line card veneer is adjusted the local clock of line card veneer according to clock signal, adjusts the local zone time value of line card veneer according to time signal, and forwarding time clock signal.
By above-mentioned processing, owing to only need to carry out according to clock signal the adjustment of local clock, and adjust the local zone time value according to time signal, so processing procedure is comparatively simple, related code quantity is less, can effectively reduce time delay, avoid taking a large amount of system resources, improve the efficient of synchronizing clock time; And by directly adjusting local clock and local zone time value, can make time synchronized have higher accuracy.
Wherein, can further include heartbeat signal (heartbeat) in the time clock signal, in this article, clock signal, time signal and heartbeat signal are referred to as the bsc bus signals, this bsc bus signals is by the bsc bus transfer.
Particularly, in step S103, when line card veneer was adjusted local clock according to clock signal, line card veneer can directly arrange local clock according to clock signal, makes local clock and clock signal synchronization after arranging.When line card veneer was adjusted the local zone time value according to time signal, line card veneer can be determined time value in the time signal and the difference between the local zone time value, and according to difference correction local zone time.In actual applications, line card veneer can directly use clock signal (bitclock) as local clock, and read fast to high-frequency the time value in the time signal (timecode), thereby the time value that reads made comparisons with local time value revise local time value, by using this revised time, line card veneer just can be finished the time synchronized with upstream device.Wherein, the line card veneer frequency that reads the time signal (timecode) in the bsc bus signals and adjust the local zone time value can be determined according to the heartbeat signal in the bsc bus signals (heartbeat).Therefore, according to different time synchronized demands, can adjust flexibly heartbeat signal, thereby adjust the synchronous execution frequency of local zone time, in to the very high situation of time synchronized real-time, line card veneer can be fast, read time signal to high-frequency from the bsc bus signals carries out the local zone time adjustment, guarantees the real-time of time synchronized.
In addition, in the present invention, the time clock signal that line card veneer receives may be from the network that adopts the first network agreement, also may be from the network that adopts the second network agreement.
In the situation of time clock signal from the network that adopts the second network agreement, the master control veneer of this line card veneer place network equipment can at first receive this time clock signal, afterwards, master control veneer need to be converted to the time clock signal of the requirement that meets the second network agreement that receives the time clock signal of the requirement that meets the first network agreement, and the time clock signal after will changing sends to line card veneer via backboard.And line card veneer needs this time clock signal is sent to the upstream device that adopts the first network agreement.
On the other hand, in the situation of time clock signal from the network that adopts the first network agreement, when carrying out the forwarding of time clock signal, line card veneer need to be transmitted to master control veneer in the network equipment of line card veneer place via backboard with the time clock signal, sends to the upstream device that adopts the second network agreement after by master control veneer this time clock signal being converted to the signal that meets the second network protocol requirement.
In the network equipment, comprise in the situation of a plurality of line card veneers, at this moment, receive line card veneer from the time clock signal of the network that adopts the first network agreement and need further this time clock signal is transmitted to other line card veneers in the network equipment, carry out local clock adjustment and the adjustment of local zone time value for other line card veneers, the process of its adjustment no longer repeats here with the described adjustment process of integrating step S103 is similar before.
Above-mentioned processing procedure of the present invention can realize the time synchronized between the multiple network.
The below will be described as an example of the time synchronized between the network of the network that adopts the 1588V2 agreement and employing GPS (Global Position System) agreement example.
At this moment, above-mentioned first network agreement refers to the 1588V2 agreement, and the second network agreement refers to the GPS (Global Position System) agreement.
As shown in Figure 2, the transmission course of signal from the GPS network to the 1588V2 network, from the GPS input signal of GPS network at first from being received by master control veneer, master control veneer converts gps signal to 1588V2 agreement operable hearbeat by the GPS modular converter of configuration on it, bitclock, three signals of timecode are (corresponding to the time clock signal that meets the first network protocol requirement of above mentioning, namely, the bsc bus signals), the bsc bus signals can be exported to line card veneer by backboard, on line card veneer, can directly use bitclock as local clock, thereby and from the bsc bus signals, read fast the timecode value and and local time value make comparisons and revise local time value, at last, line card veneer can carry out the output of 1588V2 signal (message), wherein, the device synchronization time can be used this revised time to line card veneer downstream.Wherein, the adjustment of the time on the line card veneer and clock adjustment can be carried out by the 1588V2 module of special configuration on the line card veneer.
As shown in Figure 3, the processing of synchronizing clock time specifically may further comprise the steps the transmission course of signal from the GPS network to the 1588V2 network:
The time deviation verification local zone time that step 37, line card veneer software application are calculated;
In the opposite direction, namely, at 1588 networks on the direction of GPS network, as shown in Figure 4, line card veneer can receive meet the 1588V2 protocol requirement the time clock signal (namely, 1588V2 signal (message input)), by the bsc bus with synchronous time clock signal export to place equipment master control veneer the GPS modular converter and, if comprise a plurality of line card veneers (namely in this equipment, in rack-mount unit), this line card veneer also needs this time clock signal (bsc bus signals) is exported to other line card veneer, the time and clock that other line card veneer can use bsc to transmit, and carry out 1588V2 signal (message) output.After receiving the time clock signal from this line card veneer, the GPS modular converter of master control veneer need to convert the bsc bus signals to gps signal, exports to the equipment that GPS need to be used in the downstream.
As shown in Figure 5, the processing of synchronizing clock time specifically may further comprise the steps the transmission course of signal from the 1588V2 network to the GPS network:
By above-mentioned processing, owing to only need to carry out according to clock signal the adjustment of local clock, and adjust the local zone time value according to time signal, so processing procedure is comparatively simple, the realization of code seldom, can effectively reduce time delay, avoid taking a large amount of system resources, improve the efficient of synchronizing clock time; And by directly adjusting local clock and local zone time value, can make time synchronized have higher accuracy; By determine the frequency that time value is obtained and revised according to heartbeat signal, can make time synchronization process have better real-time and mobile type, from adapting to the demand of miscellaneous service; In addition, GPS is connected the bsc bus and connects with 1588V2, and bsc bus signals and gps signal can be realized conversion by FPGA hardware, therefore realize that cost is lower.
Device embodiment
In the present embodiment, provide a kind of line card veneer.
Particularly, can comprise according to the line card veneer of the embodiment of the invention: receiver module, be used for receiving the time clock signal of predetermined format, wherein, predetermined format refers to meet the form of the requirement of first network agreement; The first adjusting module is connected to receiver module, is used for adjusting according to the clock signal of time clock signal the local clock of line card veneer; The second adjusting module is connected to receiver module, is used for adjusting according to the time signal of time clock signal the local zone time value of line card veneer; Forwarding module is connected to receiver module, is used for the forwarding time clock signal.
And the time clock signal that is received by receiver module can also comprise heartbeat signal, and heartbeat signal is used for determining to adjust the frequency of local zone time value, and the second adjusting module is used for adjusting the local zone time value according to the frequency of determining.
In addition, the present invention also provides a kind of network equipment, and the network equipment according to the present invention comprises at least one above-mentioned line card veneer and master control veneer, and wherein, the structure of line card veneer is described, and no longer repeats here.
Master control veneer according to the present invention comprises: the conversion process module, the time clock signal that is used for the requirement that meets the second network agreement that master control veneer is received is converted to the time clock signal of the requirement that meets the first network agreement, and the time clock signal after will changing sends to line card veneer; And the time clock signal that is used for the requirement that meets the first network agreement that line card veneer is transmitted is converted to the time clock signal of the requirement that meets the second network agreement, and sends to the equipment that adopts the second network agreement.
Line card veneer is transmitted to master control veneer with the time clock signal in the situation of the time clock signal that receives from the upstream equipment that adopts the first network agreement.
By the said equipment and line card veneer, owing to only need to carry out according to clock signal the adjustment of local clock, and adjust the local zone time value according to time signal, so processing procedure is comparatively simple, related code quantity is less, can effectively reduce time delay, avoid taking a large amount of system resources, improve the efficient of synchronizing clock time; And by directly adjusting local clock and local zone time value, can make time synchronized have higher accuracy.
Particularly, in above-mentioned line card veneer and the network equipment, when adjusting local clock according to clock signal, the first adjusting module in the line card veneer can directly arrange local clock according to clock signal, makes local clock and clock signal synchronization after arranging.When adjusting the local zone time value according to time signal, the second adjusting module of line card veneer can be determined time value in the time signal and the difference between the local zone time value, and according to difference correction local zone time.In actual applications, line card veneer can directly use clock signal (bitclock) as local clock, and read fast to high-frequency the time value in the time signal (timecode), thereby the time value that reads made comparisons with local time value revise local time value, by using this revised time, line card veneer just can be finished the time synchronized with upstream device.Wherein, the line card veneer frequency that reads the time signal (timecode) in the bsc bus signals and adjust the local zone time value can be determined according to the heartbeat signal in the bsc bus signals (heartbeat).Therefore, according to different time synchronized demands, can adjust flexibly heartbeat signal, thereby adjust the synchronous execution frequency of local zone time, in to the very high situation of time synchronized real-time, line card veneer can be fast, read time signal to high-frequency from the bsc bus signals carries out the local zone time adjustment, guarantees the real-time of time synchronized.
The above-mentioned network equipment of the present invention and line card veneer can be realized the time synchronized between the multiple network equally, and for example, the first network agreement can be the 1588V2 agreement, and the second network agreement can be the GPS (Global Position System) agreement.
And, can realize equally that according to the network equipment and the line card veneer of present embodiment Fig. 1 to time synchronizing shown in Figure 5 and protocol conversion and the forwarding of data, describes before its detailed process, no longer repeat here.
In sum, by means of technique scheme of the present invention, by carry out the adjustment of local clock according to clock signal, and adjust the local zone time value according to time signal, so processing procedure is comparatively simple, the realization of code seldom can effectively reduce time delay, avoid taking a large amount of system resources, improve the efficient of synchronizing clock time; And by directly adjusting local clock and local zone time value, can make time synchronized have higher accuracy; By determine the frequency that time value is obtained and revised according to heartbeat signal, can make time synchronization process have better real-time and mobile type, from adapting to the demand of miscellaneous service; In addition, GPS is connected the bsc bus and connects with 1588V2, and bsc bus signals and gps signal can be realized conversion by FPGA hardware, therefore realize that cost is lower.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for a synchronizing clock time is used for realizing the time synchronized between the network of the network of first network agreement and second network agreement, it is characterized in that described method comprises:
Line card veneer receives the time clock signal of predetermined format, and wherein, described time clock signal comprises clock signal and time signal, and described predetermined format refers to meet the form of the requirement of described first network agreement;
Described line card veneer is adjusted the local clock of described line card veneer according to described clock signal, adjusts the local zone time value of described line card veneer according to described time signal, and transmits described time clock signal.
2. method according to claim 1 is characterized in that, the processing that described line card veneer is adjusted the local clock of described line card veneer according to described clock signal specifically comprises:
Described line card veneer arranges described local clock according to described clock signal, makes described local clock and described clock signal synchronization after arranging.
3. method according to claim 1 is characterized in that, the processing that described line card veneer is adjusted the local zone time value of described line card veneer according to described time signal specifically comprises:
Described line card veneer is determined time value in the described time signal and the difference between the described local zone time value, and according to the described local zone time of described difference correction.
4. method according to claim 1 is characterized in that, described time clock signal also comprises heartbeat signal, before the local zone time value of adjusting described line card veneer, also comprises:
Described line card veneer is determined the frequency of the local zone time value of the described line card veneer of adjustment according to described heartbeat signal.
5. method according to claim 1 is characterized in that, the step that described line card veneer receives the time clock signal of predetermined format is specially:
Described line card veneer receives the time clock signal from the master control veneer transmission of the described veneer place network equipment; The time clock signal that described master control veneer sends is: the time clock signal of the requirement that meets described first network agreement after the time clock signal conversion of the requirement that meets described second network agreement that described master control veneer is received;
And the processing that described line card veneer is transmitted described time clock signal specifically comprises:
Described line card veneer sends to described time clock signal the upstream device that adopts described first network agreement.
6. method according to claim 1 is characterized in that, the processing that described line card veneer receives the time clock signal of predetermined format is specially:
Described line card veneer receives the time clock signal that sends from the upstream equipment that adopts described first network agreement;
And the processing that described line card veneer is transmitted described time clock signal specifically comprises:
Described line card veneer is transmitted to described time clock signal the master control veneer of the described ply-yarn drill place network equipment, and by described master control veneer described time clock signal is converted to the time clock signal of the requirement that meets described second network agreement, and the described time clock signal after will changing sends to the upstream device that adopts described second network agreement.
7. method according to claim 6, it is characterized in that, in the network equipment at described line card veneer place, comprise in the situation of a plurality of line card veneers, described line card veneer further is transmitted to described time clock signal other line card veneers in the described network equipment, carries out local clock adjustment and the adjustment of local zone time value for described other line card veneers.
8. line card veneer is used for realizing the time synchronized between the network of the network of first network agreement and second network agreement, it is characterized in that, comprising:
Receiver module be used for to receive the time clock signal of predetermined format, and wherein, described predetermined format refers to meet the form of the requirement of described first network agreement;
The first adjusting module is for the local clock of adjusting described line card veneer according to the clock signal of described time clock signal;
The second adjusting module is for the local zone time value of adjusting described line card veneer according to the time signal of described time clock signal;
Forwarding module is used for transmitting described time clock signal.
9. a network equipment is characterized in that, comprises at least one line card veneer and master control veneer, wherein,
Described line card veneer comprises:
Receiver module be used for to receive the time clock signal of predetermined format, and wherein, described predetermined format refers to meet the form of the requirement of first network agreement;
The first adjusting module is for the local clock of adjusting described line card veneer according to the clock signal of described time clock signal;
The second adjusting module is for the local zone time value of adjusting described line card veneer according to the time signal of described time clock signal;
Forwarding module is used for transmitting described time clock signal;
Described master control veneer comprises:
The conversion process module, the time clock signal that is used for the requirement that meets the second network agreement that described master control veneer is received is converted to the time clock signal of the requirement that meets the first network agreement, and the described time clock signal after will changing sends to described line card veneer; And the time clock signal that is used for the requirement that meets described first network agreement that described line card veneer is transmitted is converted to the time clock signal of the requirement that meets described second network agreement, and sends to the equipment that adopts described second network agreement.
10. the network equipment according to claim 9, it is characterized in that, described time clock signal also comprises heartbeat signal, described heartbeat signal is used for determining to adjust the frequency of described local zone time value, and described the second adjusting module is used for adjusting described local zone time value according to the described frequency of determining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910253977 CN101741853B (en) | 2009-12-11 | 2009-12-11 | Method for synchronizing clock time, line card veneer and network equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910253977 CN101741853B (en) | 2009-12-11 | 2009-12-11 | Method for synchronizing clock time, line card veneer and network equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101741853A CN101741853A (en) | 2010-06-16 |
| CN101741853B true CN101741853B (en) | 2013-01-16 |
Family
ID=42464739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910253977 Active CN101741853B (en) | 2009-12-11 | 2009-12-11 | Method for synchronizing clock time, line card veneer and network equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101741853B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986595A (en) * | 2010-11-01 | 2011-03-16 | 中兴通讯股份有限公司 | Time synchronization method and nodes |
| CN102142954B (en) * | 2010-11-30 | 2014-11-05 | 中兴通讯股份有限公司 | Time synchronization method and equipment in rack |
| CN102546144A (en) * | 2010-12-30 | 2012-07-04 | 上海贝尔股份有限公司 | Method and device for synchronizing information |
| CN103812595B (en) * | 2014-03-11 | 2016-07-06 | 重庆邮电大学 | A kind of TPS time synchronized innovatory algorithm based on IEEE1588 synchronization mechanism |
| CN105577307A (en) * | 2014-10-14 | 2016-05-11 | 中兴通讯股份有限公司 | Method and apparatus for realizing time and clock synchronization |
| CN108268352A (en) * | 2016-12-30 | 2018-07-10 | 中兴通讯股份有限公司 | Interface card condition detection method, interface card and line card |
| CN107294634B (en) * | 2017-06-13 | 2019-01-18 | 烽火通信科技股份有限公司 | The centralized approach of 1588 time synchronizations is realized in a kind of distributed system |
| CN109426911B (en) | 2017-08-31 | 2022-04-05 | 华为技术有限公司 | Method and device for evaluating software running environment quality of equipment |
| CN107786294B (en) * | 2017-09-22 | 2019-04-30 | 烽火通信科技股份有限公司 | A kind of centralized 1588 realization system and method |
| CN107547163A (en) * | 2017-09-29 | 2018-01-05 | 新华三技术有限公司 | The method for synchronizing time and device of a kind of distributed apparatus |
| CN114449641B (en) * | 2020-11-05 | 2024-03-19 | 大唐移动通信设备有限公司 | Clock synchronization method and device, main control board and environment board |
| CN114095109A (en) * | 2021-11-17 | 2022-02-25 | 深圳市领创星通科技有限公司 | Clock synchronization method, device, equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7447931B1 (en) * | 2005-12-09 | 2008-11-04 | Rockwell Automation Technologies, Inc. | Step time change compensation in an industrial automation network |
| CN101547083A (en) * | 2008-03-24 | 2009-09-30 | 杭州华三通信技术有限公司 | Time synchronizer, time synchronization system and time synchronization method |
| CN101594673A (en) * | 2009-06-29 | 2009-12-02 | 中兴通讯股份有限公司 | A kind of method and system of processing 1588 time stamp in distribution mode |
-
2009
- 2009-12-11 CN CN 200910253977 patent/CN101741853B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7447931B1 (en) * | 2005-12-09 | 2008-11-04 | Rockwell Automation Technologies, Inc. | Step time change compensation in an industrial automation network |
| CN101547083A (en) * | 2008-03-24 | 2009-09-30 | 杭州华三通信技术有限公司 | Time synchronizer, time synchronization system and time synchronization method |
| CN101594673A (en) * | 2009-06-29 | 2009-12-02 | 中兴通讯股份有限公司 | A kind of method and system of processing 1588 time stamp in distribution mode |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101741853A (en) | 2010-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101741853B (en) | Method for synchronizing clock time, line card veneer and network equipment | |
| CN101547083B (en) | Time synchronizer, time synchronization system and time synchronization method | |
| EP2512060B1 (en) | Method and apparatus of clock transmission between networks | |
| CN101594673B (en) | Method and system for processing 1588 time stamp in distribution mode | |
| EP2959600B1 (en) | Time synchronous pluggable transceiver | |
| CN103404226A (en) | Method and device for data transmission | |
| EP3326412A1 (en) | Synchronisation of wireless base stations | |
| US11683150B2 (en) | Methods, apparatus and computer-readable media for synchronization over an optical network | |
| WO2010111963A1 (en) | Time synchronization device, method and system | |
| CN103259640B (en) | A kind of method and apparatus of lock in time | |
| WO2012065334A1 (en) | Method, device and system for realizing time synchronization in time division multiplexing network | |
| WO2012003746A1 (en) | Method and device for realizing boundary clock | |
| CN110278065A (en) | A kind of method and apparatus of delay compensation | |
| CN103152118A (en) | Base band unit and remote radio unit data service synchronization method, device and system | |
| CN101247169A (en) | Method, system and equipment for implementing time synchronization in communication network | |
| EP2131530A1 (en) | Network element | |
| CN201789508U (en) | 1588V2 protocol processing system | |
| CN102342051B (en) | For coming the method for synchronised clock and relevant system and module by separating transmission first and second data via at least one time distribution protocol | |
| CN107959537B (en) | State synchronization method and device | |
| WO2013155944A1 (en) | Boundary clock, transparent clock, and method for clock transmission | |
| WO2011023007A1 (en) | Method and system for time synchronization in a passive optical network | |
| EP3723327B1 (en) | System and method for communication in an industrial environment | |
| CN101194448B (en) | Method and system for transmitting a clock rate on an Ethernet network link and devices thereof | |
| TW201929579A (en) | System and method for end-to-end PTP profiles integration | |
| CN112910591B (en) | Ethernet interface timestamp processing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |