CN106877959A - A kind of synchronous method, apparatus and system of clock - Google Patents

A kind of synchronous method, apparatus and system of clock Download PDF

Info

Publication number
CN106877959A
CN106877959A CN201510918940.3A CN201510918940A CN106877959A CN 106877959 A CN106877959 A CN 106877959A CN 201510918940 A CN201510918940 A CN 201510918940A CN 106877959 A CN106877959 A CN 106877959A
Authority
CN
China
Prior art keywords
time
messages
delay
message
residence time
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.)
Granted
Application number
CN201510918940.3A
Other languages
Chinese (zh)
Other versions
CN106877959B (en
Inventor
晏小平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanechips Technology Co Ltd
Shenzhen ZTE Microelectronics Technology Co Ltd
Original Assignee
Shenzhen ZTE Microelectronics Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen ZTE Microelectronics Technology Co Ltd filed Critical Shenzhen ZTE Microelectronics Technology Co Ltd
Priority to CN201510918940.3A priority Critical patent/CN106877959B/en
Priority to PCT/CN2016/098770 priority patent/WO2017096994A1/en
Publication of CN106877959A publication Critical patent/CN106877959A/en
Application granted granted Critical
Publication of CN106877959B publication Critical patent/CN106877959B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0685—Clock or time synchronisation in a node; Intranode synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0075—Arrangements for synchronising receiver with transmitter with photonic or optical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Computer And Data Communications (AREA)

Abstract

The embodiment of the invention discloses a kind of synchronous method, apparatus and system of clock, the method includes：Main equipment encapsulates to the first message the very first time value of generation with the first residence time for obtaining, and first message is sent to slave unit；The main equipment receives the second message sent by the slave unit；Wherein, second message includes the 3rd residence time；The main equipment obtains the 4th residence time and the 4th time value when second message is received；The 3rd residence time in 4th time value, the 4th residence time and second message is encapsulated into the 3rd message by the main equipment, and the 3rd message is sent to slave unit.

Description

A kind of synchronous method, apparatus and system of clock
Technical field
The present invention relates to the network communications technology, more particularly to a kind of synchronous method, apparatus and system of clock.
Background technology
In existing communication equipment, each equipment room carries out the scheme major part of time synchronized all according to Electrical and Electronic engineering Shi Xiehui (IEEE, Institute of Electrical and Electronics Engineers) was proposed simultaneously in 2002 The network measure modified in 2007 and the precision interval clock synchronous protocol standard of control system realize that the standard is also called The agreements of IEEE 1588.
At present, in the application of the agreements of IEEE 1588, generally using distributed structure/architecture networking mode treatment IEEE 1588 Agreement, i.e. each network service node run the protocol systems of a set of IEEE 1588, and such advantage is exactly can be to network section Point is extended.But, because each network node will be by running best master clock algorithm (BMC, Best Master Clock algorithm) find the optimal clock of each interface in present networks node, and in local node each interface clock A clock for main equipment is come from, the coupling so resulted between network node is stronger.Therefore, failure When safeguard relatively difficult, and realize it is also more complicated.
In addition, transmission of the agreements of IEEE 1588 to transmission net is populated with strict requirements, that is, the equipment for participating in time synchronized Between time delay must be a relatively-stationary value, and the residence time of equipment transmitting-receiving bidirectional must be equal, otherwise to the time It is synchronous to produce larger error.And in optical transfer network (OTN, Optical Transport Network) network, due to existing The phenomenons such as link is asymmetric, the treatment time delay of OTN frames, the equipment transmitting-receiving bidirectional residence time that may result in participation time synchronized is deposited The precision of time synchronized is carried out between certain error, and then the equipment of influence participation time synchronized.
The content of the invention
In view of this, the embodiment of the present invention is expected to provide a kind of clock synchronous method, apparatus and system, reduces the time Coupling when synchronous between network node, carries out the precision of time synchronized between the equipment that improve participation time synchronized.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
In a first aspect, the embodiment of the present invention provides a kind of method of time synchronized, methods described is applied to main equipment, described Method includes：Main equipment encapsulates to the first message the very first time value of generation with the first residence time for obtaining, and will be described First message is sent to slave unit；The main equipment receives the second message sent by the slave unit；Wherein, second report Text includes the 3rd residence time；The main equipment obtains the 4th residence time and the 4th time when second message is received Value；The main equipment seals the 3rd residence time in the 4th time value, the 4th residence time and second message Load the 3rd message, and the 3rd message is sent to slave unit.
In such scheme, the main equipment includes first master control borad and at least one first business boards；Described One message is sync messages；Second message is delay-req messages；3rd message is delay-resp messages.
In such scheme, the main equipment encapsulates to the very first time value of generation with the first residence time for obtaining One message, and first message is sent to slave unit, specifically include：First master control borad is generating the sync messages Shi Jilu generates the very first time value T of the sync messages1, and by the very first time value T1It is packaged in the sync messages Reserved field；First master control borad sends to first business board sync messages, and records first master Control plate sends the time Tout of the sync messages1；First business board parses the sync messages, obtains first master Control plate sends the time Tout of the sync messages1；First business board is sent out by the sync messages to the slave unit When sending, the time tout that first business board sends the sync messages is recorded1, and institute is sent according to first master control borad State the time Tout of sync messages1With the time tout that first business board sends the sync messages1Described first is obtained to stay Stay time Δ t1, and by the first residence time Δ t1It is packaged in the amendment domain Δ T in the sync messages1To it is described from Equipment sends.
In such scheme, the main equipment receive second message when, obtain the 4th residence time and the 4th when Between be worth, specifically include：First business board records first business board and receives when the delay-req messages are received The time tin of the delay-req messages4；First business board sends to the described first master the delay-req messages Control plate；The first master control borad record receives the time Tin of the delay-req messages4, and parse the delay-req First business board that message is encapsulated receives the time tin of delay-req messages4, acquire the described 4th and be resident Time Δ t4；The 4th time value T of the first master control borad record parsing delay-req messages4。
In such scheme, the main equipment is by the 4th time value, the 4th residence time and second message In the 3rd residence time be encapsulated into the 3rd message, and the 3rd message is sent to slave unit, specifically include：Described first Master control borad produces the delay-resp messages, by the 4th time value T4, the 4th residence time Δ t4And it is described The 3rd residence time Δ t in delay-req message amendments domain3The delay-resp messages are encapsulated into, and will be described Delay-resp messages are sent to first business board；First business board receives what first master control borad was sended over The delay-resp messages, and the delay-resp messages are sent to the slave unit.
Second aspect, the embodiment of the present invention provides a kind of method of time synchronized, and methods described is applied to slave unit, described Method includes：Slave unit obtains the first residence time, the second residence time, very first time value and the when the first message is received Two time values；Slave unit records the 3rd time value, and the 3rd residence time for obtaining is encapsulated to the second message, and by described second Message is sent to main equipment；Slave unit obtains included the 4th time value, the 4th in the 3rd message when three messages is received The 3rd residence time in residence time and the second message, and according to very first time value, the second time value, the 3rd time Value and the 4th time value, and first residence time, second residence time, the 3rd residence time and described the Four residence times, calculate the time deviation and time delay between the main equipment and the slave unit.
In such scheme, the slave unit includes second master control borad and at least one second business boards；Described One message is sync messages；Second message is delay-req messages；3rd message is delay-resp messages.
In such scheme, the slave unit when the first message is received, obtain the first residence time, second it is resident when Between, the very first time value and the second time value, specifically include：Second business board records institute when the sync messages are received State the time tin that the second business board receives the sync messages2；Second business board sends to institute the sync messages State the second master control borad；The second master control borad record receives the time Tin of the sync messages2；And parse the sync reports Second business board that text is encapsulated receives the time tin of sync messages2, acquire the second residence time Δ t2；Second time value T of the second master control borad record parsing sync messages2；Second master control borad records sync messages Amendment domain Δ T1In the first residence time Δ t1With the very first time value T in reserved field1。
In such scheme, the slave unit records the 3rd time value, and the 3rd residence time for obtaining is encapsulated to the Two messages, and second message is sent to main equipment, specifically include：Second master control borad is generating the delay- The 3rd time value T of the generation delay-req messages is recorded during req messages3；Second master control borad is by the delay- Req messages are sent to second business board, and record the time that second master control borad sends the delay-req messages Tout3；Second business board parses the delay-req messages, obtains second master control borad and sends the delay-req The time Tout of message3；Second business board records institute when the delay-req messages are sent to the main equipment State the time tout that the second business board sends the delay-req messages3, and according to second master control borad sends The time Tout of delay-req messages3With the time tout that second business board sends the delay-req messages3Obtain institute State the 3rd residence time Δ t3, and by the 3rd residence time Δ t3It is packaged in the amendment domain Δ of the delay-req messages T2Sent to the main equipment.
In such scheme, the slave unit when three messages is received, when obtaining the included 4th in the 3rd message Between the 3rd residence time in value, the 4th residence time and the second message, and according to very first time value, the second time Value, the 3rd time value and the 4th time value, and first residence time, second residence time, the described 3rd be resident Time and the 4th residence time, calculate the time deviation and time delay between the main equipment and the slave unit, specifically Including：The synchronization mechanism that the slave unit passes through Precision Time Protocol PTP, according to very first time value, second time Value, the 3rd time value and the 4th time value distinguish corresponding time stamp T1、T2、T3And T4, and the first residence time Δt1, the second residence time Δ t2, the 3rd residence time Δ t3With the 4th residence time Δ t4, calculate main equipment and slave unit Between time deviation and time delay；Wherein, the first residence time Δ t1It is stored in the amendment domain Δ T of first message1= Δt1, the 3rd residence time Δ t3It is stored in the amendment domain Δ T of second message2=Δ t3。
The third aspect, the embodiment of the present invention provides a kind of main equipment, and the main equipment includes：First master control borad and the first industry Business plate；Wherein, first master control borad, for the very first time value of generation to be encapsulated to first with the first residence time for obtaining Message；First business board, for first message to be sent to slave unit；And, reception is sent by the slave unit The second message；Second message includes the 3rd residence time；First master control borad, is additionally operable in first business board When receiving second message, the 4th residence time and the 4th time value are obtained；And, the 4th time value, the 4th are stayed The 3rd residence time in time and second message is stayed to be encapsulated into the 3rd message；The business board, being additionally operable to will be described 3rd message is sent to slave unit.
In such scheme, first message is sync messages；Second message is delay-req messages；It is described 3rd message is delay-resp messages.
In such scheme, first master control borad, specifically for described in the record generation when the sync messages are generated The very first time value T of sync messages1, and by the very first time value T1It is packaged in the reserved field of the sync messages；With And, the sync messages are sent to first business board, and record the time Tout for sending the sync messages1；It is described First business board, specifically for parsing the sync messages, obtains the time Tout for sending the sync messages1；And, When the sync messages are sent to the slave unit, record sends the time tout of the sync messages1, and according to described First master control borad sends the time Tout of the sync messages1With the time that first business board sends the sync messages tout1Obtain the first residence time Δ t1, and by the first residence time Δ t1It is packaged in the sync messages Amendment domain Δ T1Sent to the slave unit.
In such scheme, first business board, specifically for when the delay-req messages are received, recording institute State the time tin that the first business board receives the delay-req messages4；And, the delay-req messages are sent to institute State the first master control borad；First master control borad, the time Tin of the delay-req messages is received specifically for record4, and Parse the time tin of first business board reception delay-req messages that the delay-req messages are encapsulated4, obtain Obtain the 4th residence time Δ t4；And, the 4th time value T of the record parsing delay-req messages4。
In such scheme, first master control borad, specifically for producing the delay-resp messages, will be described The 4th time value T in delay-req messages4, and the 3rd residence time in the delay-req messages amendment domain Δt3The delay-resp messages are encapsulated into, and the delay-resp messages are sent to first business board；It is described First business board, specifically for receiving the delay-resp messages that first master control borad is sended over, and will be described Delay-resp messages are sent to the slave unit.
Fourth aspect, the embodiment of the present invention provides a kind of slave unit, and the slave unit includes the second master control borad and the second industry Business plate, wherein, second business board, for receiving the first message；Second master control borad, when being resident for obtaining first Between, the second residence time, the very first time value and the second time value；And, the 3rd time value is recorded, and the obtain the 3rd is resident Time is encapsulated to the second message；Second business board, is additionally operable to send second message to main equipment；And, receive the Three messages；Second master control borad, be additionally operable to obtain included the 4th time value in the 3rd message, the 4th residence time and The 3rd residence time in second message, and according to very first time value, the second time value, the 3rd time value and the 4th time Value, and first residence time, second residence time, the 3rd residence time and the 4th residence time, Calculate the time deviation and time delay between the main equipment and the slave unit.
In such scheme, first message is sync messages；Second message is delay-req messages；It is described 3rd message is delay-resp messages.
In such scheme, second business board, specifically for when the sync messages are received, recording described second Business board receives the time tin of the sync messages2；And, the sync messages are sent to second master control borad；Institute The second master control borad is stated, the time Tin of the sync messages is received specifically for record2；And parse the sync messages and obtain Second business board of encapsulation receives the time tin of sync messages2, acquire the second residence time Δ t2；It is described Second time value T of the second master control borad record parsing sync messages2；Second master control borad records the amendment of sync messages Domain Δ T1In the first residence time Δ t1With the very first time value T in reserved field1。
In such scheme, second master control borad, specifically for the record generation when the delay-req messages are generated 3rd time value T of the delay-req messages3；And, the delay-req messages are sent to second business board, And record the time Tout that second master control borad sends the delay-req messages3；Second business board, specifically for The delay-req messages are parsed, the time Tout that second master control borad sends the delay-req messages is obtained3；With And, when the delay-req messages are sent to the main equipment, record second business board and send the delay- The time tout of req messages3, and the time Tout of the delay-req messages is sent according to second master control borad3With it is described Second business board sends the time tout of the delay-req messages3Obtain the 3rd residence time Δ t3, and will be described 3rd residence time Δ t3It is packaged in the amendment domain Δ T of the delay-req messages2Sent to the main equipment.
In such scheme, second master control borad, specifically for the synchronization mechanism by Precision Time Protocol PTP, root Distinguish the corresponding time according to very first time value, second time value, the 3rd time value and the 4th time value Stamp T1、T2、T3And T4, and the first residence time Δ t1, the second residence time Δ t2, the 3rd residence time Δ t3With the 4th residence time Δ t4, calculate the time deviation and time delay between the main equipment and the slave unit.
5th aspect, the embodiment of the present invention provides a kind of system of time synchronized, and the system includes：Main equipment and from setting It is standby；Wherein,
The main equipment, for the very first time value of generation to be encapsulated to the first message with the first residence time for obtaining, And send to the slave unit first message；And, the second message that reception is sent by the slave unit；Described second Message includes the 3rd residence time；And, when second message is received, obtain the 4th residence time and the 4th time value； Wherein, second message includes the 3rd residence time；And, the 4th time value in second message, the 4th are resident The 3rd residence time in time and second message is encapsulated into the 3rd message, and the 3rd message is sent to from setting It is standby；
The slave unit, for receive the first message when, obtain the first residence time, the second residence time, first when Between value and the second time value；And, record obtains the 3rd time value, and the 3rd residence time for obtaining is encapsulated to the second message, And send to the main equipment second message；And, when three messages is received, obtain included the in the 3rd message The 3rd residence time in four time values, the 4th residence time and the second message, and during according to very first time value, second Between value, the 3rd time value and the 4th time value, and first residence time, second residence time, the described 3rd stay Time and the 4th residence time are stayed, the time deviation and time delay between the main equipment and the slave unit is calculated.
A kind of synchronous method, apparatus and system of clock are the embodiment of the invention provides, by many between master and slave equipment Secondary message interaction such that it is able to obtain the residence time of master and slave equipment transmitting-receiving bidirectional, and according to master and slave equipment transmitting-receiving bidirectional Residence time know master and slave equipment room time delay, coupling when reducing time synchronized between network node improves participation The precision of time synchronized is carried out between the equipment of time synchronized.
Brief description of the drawings
Fig. 1 is a kind of synchronous method detailed process schematic diagram of clock provided in an embodiment of the present invention；
Fig. 2 is the idiographic flow schematic diagram that a kind of main equipment provided in an embodiment of the present invention sends the first message；
Fig. 3 is the specific stream that a kind of slave unit provided in an embodiment of the present invention obtains the second residence time and the second time value Journey schematic diagram；
Fig. 4 is the idiographic flow schematic diagram that a kind of slave unit provided in an embodiment of the present invention sends the second message；
Fig. 5 is the specific stream that a kind of main equipment provided in an embodiment of the present invention obtains the 4th residence time and the 4th time value Journey schematic diagram；
Fig. 6 is the idiographic flow schematic diagram that a kind of main equipment provided in an embodiment of the present invention sends the 3rd message；
Fig. 7 is a kind of structural representation of main equipment provided in an embodiment of the present invention；
Fig. 8 is a kind of structural representation of slave unit provided in an embodiment of the present invention；
Fig. 9 is the idiographic flow schematic diagram that another main equipment provided in an embodiment of the present invention sends the first message；
Figure 10 is the tool that another slave unit provided in an embodiment of the present invention obtains the second residence time and the second time value Body schematic flow sheet；
Figure 11 is the idiographic flow schematic diagram that another slave unit provided in an embodiment of the present invention sends the second message；
Figure 12 is the tool that another main equipment provided in an embodiment of the present invention obtains the 4th residence time and the 4th time value Body schematic flow sheet；
Figure 13 is the idiographic flow schematic diagram that another main equipment provided in an embodiment of the present invention sends the 3rd message；
Figure 14 is a kind of method for synchronizing time schematic flow sheet of main equipment side provided in an embodiment of the present invention；
Figure 15 is a kind of method for synchronizing time schematic flow sheet of slave unit side provided in an embodiment of the present invention；
Figure 16 is the structural representation of another main equipment provided in an embodiment of the present invention；
Figure 17 is the structural representation of another slave unit provided in an embodiment of the present invention；
Figure 18 is a kind of system structure diagram of time synchronized provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described.
Embodiment one
It is a kind of method of time synchronized provided in an embodiment of the present invention referring to Fig. 1, the method can apply to the time Synchronous system, the system can include：Carry out the main equipment and slave unit of message interaction；Wherein, main equipment includes one the One master control borad and at least one first business boards, slave unit include second master control borad and at least one second business boards.Should Method can include：
S101：Main equipment encapsulates to the first message the very first time value of generation with the first residence time for obtaining, and will First message is sent to slave unit；
It should be noted that the first message can be the synchronous sync messages that main equipment sends to slave unit, or Other kinds of message, the embodiment of the present invention is not especially limited to this.And, the first residence time is being reported for main equipment When text sends, residence time of the message in main equipment.
Exemplarily, because main equipment can include first master control borad and at least one first business boards, therefore, step The implementation process of rapid S101 is as shown in Fig. 2 can specifically include：
S1011：The very first time value T of the first master control borad record generation sync messages when sync messages are generated1, and will Very first time value T1It is packaged in the reserved field of sync messages；Specifically in the present embodiment, the first master control borad will very first time value T1 Can be preserved by the form of system timestamp, be packaged in the precisetime field domains of sync messages；
S1012：First master control borad sends to the first business board sync messages, and records the first master control borad transmission sync reports The time Tout of text1；Specifically, the first master control borad sends the time Tout of sync messages1Can also be by the shape of system timestamp Formula is preserved, and be packaged in sync messages after PTP information, the field domain before FCS verifications；It is to be appreciated that T1Will Earlier than Tout1；
S1013：First business board parses sync messages, obtains the time Tout that the first master control borad sends sync messages1；
S1014：When sync messages are sent to slave unit, the first business board of record sends sync messages to first business board Time tout1, and the time Tout of sync messages is sent according to the first master control borad1Sync messages are sent with the first business board Time tout1Obtain the first residence time Δ t1, and by the first residence time Δ t1It is packaged in sync messages and is sent out to slave unit Send；Specifically, the first residence time Δ t1=tout1-Tout1, the first residence time can be packaged in the amendment of sync messages Domain, so as to there is Δ T1=Δ t1。
Alternatively, in step S1011, very first time value T1The Follow- sent after sync messages can be packaged in In up messages, and sent to slave unit by the first business board, it is necessary to illustrate, for Follow-up messages, the first business board It is merely responsible for sending, does not carry out other treatment such as parsing.
S102：Slave unit receive the first message when, obtain the very first time value, the second time value, the first residence time and Second residence time；
It should be noted that the second residence time be slave unit receive message during, message is in slave unit Residence time.It is to be appreciated that being illustrated so that the first message is sync messages as an example in the present embodiment, now, slave unit is obtained Obtain very first time value, the second time value, the first residence time and the second residence time.
Exemplarily, because slave unit can include second master control borad and at least one second business boards, therefore, step The implementation process of rapid S102 is as shown in figure 3, can specifically include：
S1021：When sync messages are received, the second business board of record receives the time of sync messages to second business board tin2；Specifically, the second business board receives the time tin of sync messages2Can also be protected by the form of system timestamp Deposit, and be packaged in sync messages be located at PTP information after, the field domain before FCS verifications；
S1022：Second business board sends to the second master control borad sync messages；
S1023：Second master control borad record receives the time Tin of sync messages2；And parse what sync messages were encapsulated Second business board receives the time tin of sync messages2, acquire the second residence time Δ t2；
Specifically, the second master control borad can by parse be located in sync messages PTP information after, before FCS verifies Field domain acquires tin2, then according to Δ t2=Tin2-tin2Acquire the second residence time.
S1024：Second time value T of the second master control borad record parsing sync messages2, specifically in the present embodiment, second Master control borad can be by the second time value T2Preserved by the form of system timestamp；Meanwhile, record the amendment of sync messages Domain Δ T1In the first residence time Δ t1With the very first time value T in precisetime field domains1。
S103：Slave unit records the 3rd time value, and the 3rd residence time for obtaining is encapsulated to the second message, and will be described Second message is sent to main equipment；
It should be noted that the second message can be the delay-req messages that slave unit sends to main equipment, or Other kinds of message, the embodiment of the present invention is not especially limited to this.And, the 3rd residence time is being reported for slave unit When text sends, residence time of the message in slave unit.
Exemplarily, because slave unit can include second master control borad and at least one second business boards, therefore, step The implementation process of rapid S103 is as shown in figure 4, can specifically include：
S1031：3rd time of the second master control borad record generation delay-req messages when delay-req messages are generated Value T3；Specifically in the present embodiment, the second master control borad can be by the 3rd time value T3Protected by the form of system timestamp Deposit；
S1032：Second master control borad sends to the second business board delay-req messages, and records the transmission of the second master control borad The time Tout of delay-req messages3；Specifically, the second master control borad sends the time Tout of delay-req messages3Can also lead to The form for crossing system timestamp is preserved, and be packaged in delay-req messages after PTP information, the word before FCS verifications Section domain；It is to be appreciated that T3Will be earlier than Tout3；
S1033：Second business board parse delay-req messages, obtain the second master control borad send delay-req messages when Between Tout3；
S1034：When delay-req messages are sent to main equipment, the second business board of record sends second business board The time tout of delay-req messages3, and the time Tout of delay-req messages is sent according to the second master control borad3With the second industry Business plate sends the time tout of delay-req messages3Obtain the 3rd residence time Δ t3, and the 3rd residence time is packaged in Sent to main equipment in delay-req messages；Specifically, the 3rd residence time Δ t3=Tout3-tout3, the 3rd residence time Δt3The amendment domain of delay-req messages can be packaged in, so as to there is Δ T2=Δ t3。
S104：Main equipment obtains the 4th residence time and the 4th time value when the second message is received；
It should be noted that the 4th residence time be main equipment receive message during, message is in main equipment Residence time.
Exemplarily, because main equipment can include first master control borad and at least one first business boards, therefore, step The implementation process of rapid S104 is as shown in figure 5, can specifically include：
S1041：When delay-req messages are received, the first business board of record receives delay-req messages to first business board Time tin4；Specifically, the time of the first business board reception delay-req messages can also be by the form of system timestamp Preserved, and be packaged in delay-req messages be located at PTP information after, the field domain before FCS verifications；
S1042：First business board sends to the first master control borad delay-req messages；
S1043：First master control borad record receives the time Tin of delay-req messages4, and parse delay-req messages The first business board for being encapsulated receives the time tin of delay-req messages4, acquire the 4th residence time Δ t4；
Specifically, the first master control borad can by parse be located in delay-req messages PTP information after, FCS verify it Preceding field domain gets tin4, then according to Δ t4=Tin4-tin4Acquire the 4th residence time.
S1044：4th time value T of the first master control borad record parsing delay-req messages4；Specifically in the present embodiment, First master control borad can be by the 4th time value T4Preserved by the form of system timestamp.
S105：Be resident in 4th time value, the 4th residence time and second message the 3rd by main equipment Time is encapsulated into the 3rd message, and the 3rd message is sent to slave unit；
It should be noted that the 3rd message can be the delay-resp messages that main equipment sends to slave unit, it is also possible to It is other kinds of message, the embodiment of the present invention is not especially limited to this.
Exemplarily, because main equipment can include first master control borad and at least one first business boards, therefore, step The implementation process of rapid S105 is as shown in fig. 6, can specifically include：
S1051：First master control borad produces delay-resp messages, by the 4th time value T in delay-req messages4, Four residence time Δ t4And the 3rd residence time Δ t in delay-req message amendments domain3Delay-resp messages are encapsulated into, And send to the first business board delay-resp messages；
S1052：First business board receives the delay-resp messages that send over of the first master control borad, and by delay-resp Message is sent to slave unit.
S106：Slave unit when three messages is received, in obtaining the 4th time value, the 4th residence time and the second message The 3rd residence time, and according to very first time value, the second time value, the 3rd time value and the 4th time value, Yi Jisuo State the first residence time, the second residence time, the 3rd residence time and the 4th residence time, calculate the main equipment with it is described Time deviation and time delay between slave unit, the current time of slave unit is adjusted by time deviation and time delay, sets principal and subordinate Standby time synchronized.
It should be noted that the 3rd message can be the delay-resp messages that main equipment sends to slave unit, it is also possible to It is other kinds of message, the embodiment of the present invention is not especially limited to this.
In addition, very first time value T1In the precisetime field domains of the sync messages that can be received before slave unit Acquire, and the value, Δ T' in the first message amendment domain1Can also be obtained in the amendment domain of above-mentioned sync messages Arrive.
In specific implementation process, by the synchronous machine of Precision Time Protocol (PTP, Precision Time Protocol) System, corresponding time stamp T is distinguished according to very first time value, the second time value, the 3rd time value and the 4th time value1、T2、T3With T4, and the first residence time Δ t1, the second residence time Δ t2, the 3rd residence time Δ t3With the 4th residence time Δ t4, meter Calculate the time deviation and time delay between main equipment and slave unit；Wherein, the first residence time Δ t1It is stored in the first message Amendment domain Δ T1=Δ t1, the 3rd residence time Δ t3It is stored in the amendment domain Δ T of the second message2=Δ t3。
Specifically, can be according to time deviationAnd time delayCalculate time deviation between master-slave equipment and when Prolong, and then the current time of the first master control borad is obtained according to PTP, realize the current time of the first master control borad of main equipment is same Walk the purpose of the second master control borad of slave unit.
It should be noted that when business board is also needed to master control borad pair in respective equipment so that the list in all devices The time of plate is consistent.
Embodiment two
Based on above-described embodiment identical technology design, present embodiments provide a kind of method of time synchronized and implement Flow, this implements flow and the process that implements of each step in embodiment one is described.
Specifically, in the present embodiment, as shown in fig. 7, main equipment includes first master control borad and at least one first Business board；Wherein, the first master control borad in addition to the cpu, also comprising the first FPGA module and the first master control borad sgmii interfaces, first FPGA module is included again：First Sync units, a Delay-req units, a Delay-resp units, a Timer0 are mono- Unit, a Timer1 units；First business board includes the first business board sgmii interfaces, a Framer modules and the first optical mode Block, a Framer modules include a Framer serdes units again；It should be noted that a Sync units, first Delay-req units, a Delay-resp units are the first master control borad carries out the unit of Message processing, to respective type Message is processed.
As shown in figure 8, slave unit includes second master control borad and at least one second business boards；Wherein, the second master control The second FPGA module and the second master control borad sgmii interfaces are included in plate, the second FPGA module is included again：2nd Sync units, Two Delay-req units, the 2nd Delay-resp units, the 2nd Timer0 units, the 2nd Timer1 units；Second business board bag Containing the second business board sgmii interfaces, the 2nd Framer modules and the second optical module, the 2nd Framer modules include second again Framer serdes units；It should be noted that the 2nd Sync units, the 2nd Delay-req units, the 2nd Delay-resp Unit is the second master control borad and carries out the unit of Message processing, and the message to respective type is processed.
It will be appreciated by those of skill in the art that embodiment of the present invention is not limited in above-mentioned scene, and may be used also Among suitable for other arbitrary scenes.
Specific composition based on the said equipment, is implemented as follows for each step in embodiment one：
Preferably, referring to Fig. 9, for step S101：The very first time value and obtain first that the main equipment will be generated Residence time is encapsulated to the first message, and the implementation process that first message is sent to slave unit can include：
S901：A Sync units on main equipment are produced and send sync messages to a Timer0 units, and first Timer0 units receive the sync messages that a Sync units are sended over, and sync messages are sent into mono- to a Timer1 Unit；
S902：First master control borad record a Timer0 units send sync messages time be the very first time value, with when Between stab T1Form preserve, and by time stamp T1Load the precisetime field domains of sync messages；
S903：First Timer1 units receive the sync messages that send over of a Timer0 units, and by sync messages Send to the first master control borad sgmii interface modules；
S904：First master control borad records the time that a Timer1 units send sync messages, with system timestamp Tout1 Form preserve, and by system timestamp Tout1Be fitted into sync messages after being located at PTP information, the field before FCS verifications Domain；
S905：First master control borad sgmii interface modules receive the sync messages that a Timer1 units are sended over, and will Sync message transmissions are to the first business board sgmii interface modules；
S906：First business board sgmii interface modules receive the sync that the first master control borad sgmii interface modules are transmitted Message, and sync messages are sent to a Framer modules；
S907：A Framer serializers (serdes, SERializer) unit in first Framer modules is received simultaneously Sync messages are sent, and sync messages are sent to the first optical module；
S908：First business board records the time that a Framer serdes units send sync messages, and during with system Between stab tout1Form preserve；
S909：Field domain in first business board parsing sync messages after PTP information, before FCS verifications, to obtain Take the time Tout that a Timer1 units send sync messages1；
S910：First business board calculates Timer1 units transmission sync messages and a Framer serdes are mono- Unit sends the time difference between sync messages, can specifically be designated as the first residence time Δ t1=tout1-Tout1, and will First residence time Δ t1Write the amendment domain Δ T of sync messages1=Δ t1；
S911：First optical module receives the sync messages that a Framer serdes units are sended over, and sync is reported Text is sent to slave unit.
Alternatively, in step S901, very first time value T1The Follow-up sent after sync messages can be packaged in In message, and sent to slave unit by the first business board, it is necessary to illustrate, for Follow-up messages, the first business board is only It is responsible for transmission, does not carry out other treatment such as parsing.
Preferably, referring to Figure 10, for step S102：The slave unit obtains the very first time when the first message is received The implementation process of value, the second time value, the first residence time and the second residence time can include：
S1001：The second optical module in slave unit receives the message that main equipment is sended over, and sends message to second Framer modules, sync messages are identified by the 2nd Framer modules, and by sync messages unification to communication between plates definition with Too on network packet form；
S1002：The 2nd Framer serdes units in 2nd Framer modules receive sync messages, and sync is reported Text is sent to the second business board sgmii interface modules；
S1003：Second business board records the time that the 2nd Framer serdes units receive sync messages, with timestamp tin2Form preserve, and by timestamp tin2Be encapsulated into sync messages after being located at PTP information, the field before FCS verifications Domain；
S1004：Second business board sgmii interface modules receive the sync that the 2nd Framer serdes units are sended over Message, and by sync message transmissions to the second master control borad sgmii interface modules；
S1005：Second master control borad sgmii interface modules receive what the second business board sgmii interface modules were transmitted Sync messages, then sync messages are sent to the 2nd Timer1 units；
S1006：Second master control borad records the time that the 2nd Timer1 units receive sync messages, with system timestamp Tin2 Form preserve；
S1007：Field domain in second master control borad parsing sync messages after PTP information, before FCS verifications, obtains The time tin of sync messages is received to the 2nd Framer serdes units2；
S1008：Second master control borad calculates the 2nd Framer serdes units reception sync messages and the 2nd Timer1 is mono- Unit receives the time difference between sync messages, can specifically be designated as the second residence time Δ t2=Tin2-tin2；
S1009：2nd Timer1 units send sync messages to the 2nd Timer0 units, and the 2nd Timer0 units of record connect The time for receiving sync messages is the second time value, with time stamp T2Form preserve；
S1010：2nd Timer0 units send sync messages to the 2nd Sync units, the 2nd Sync unit resolves sync reports Text, and record the amendment domain Δ T of sync messages1In the first residence time Δ t1With in precisetime field domains first when Between value T1。
Preferably, referring to Figure 11, for step S103, the slave unit records the 3rd time value, and the obtain the 3rd is stayed The time is stayed to encapsulate to the second message, and the implementation process that second message is sent to main equipment can include：
S1101：After the 2nd Delay-req units in slave unit produce delay-req messages, the 2nd Timer0 units connect The delay-req messages that the 2nd Delay-req units are sended over are received, and delay-req messages are sent to the 2nd Timer1 Unit；
S1102：The time that second master control borad records the 2nd Timer0 units transmission delay-req messages was the 3rd time Value, with time stamp T3Form preserve；
S1103：2nd Timer1 units receive the delay-req messages that the 2nd Timer0 units are sended over, and will Delay-req messages are sent to the second master control borad sgmii interface modules；
S1104：Second master control borad records the time that the 2nd Timer1 units send delay-req messages, with system time Stamp Tout3Form preserve, and by system timestamp Tout3Be fitted into delay-req messages after being located at PTP information, FCS schools Field domain before testing；
S1105：Second master control borad sgmii interface modules receive the delay-req reports that the 2nd Timer1 units are sended over Text, and by delay-req message transmissions to the second business board sgmii interface modules；
S1106：Second business board sgmii interface modules receive what the second master control borad sgmii interface modules were transmitted Delay-req messages, and delay-req messages are sent to the 2nd Framer modules；
S1107：The 2nd Framer serdes units in 2nd Framer modules receive delay-req messages, and will Delay-req messages are sent to the second optical module；
S1108：The time of the second business board record the 2nd Framer serdes units transmission delay-req messages, and with System timestamp tout3Form preserve；
S1109：Field in second business board parsing delay-req messages after PTP information, before FCS verifications Domain, to obtain the time Tout that the 2nd Timer1 units send delay-req messages3；
S1110：Second business board calculates the 2nd Timer1 units and sends delay-req messages and the 2nd Framer Serdes units send the time difference between delay-req messages, can specifically be designated as the 3rd residence time Δ t3=tout3- Tout3, and by the 3rd residence time Δ t3Write the amendment domain Δ T of delay-req messages2=Δ t3；
S1111：Second optical module receives the delay-req messages that the 2nd Framer serdes units are sended over, and will Delay-req messages are sent to main equipment.
Preferably, referring to Figure 12, for step S104, the main equipment obtains the 4th and is resident when the second message is received The implementation process of time and the 4th time value can include：
S1201：The first optical module in main equipment receives the message that slave unit is sended over, and sends message to first Framer modules, identify delay-req messages, and the unification of delay-req messages is led to between plate by a Framer modules Believe on the Ethernet message format of definition；
S1202：A Framer serdes units in first Framer modules receive delay-req messages, and will Delay-req messages are sent to the first business board sgmii interface modules；
S1203：First business board record a Framer serdes units receive delay-req messages time, with when Between stab tin4Form preserve, and by timestamp tin4Be encapsulated into delay-req messages after being located at PTP information, FCS verifications Field domain before；
S1204：First business board sgmii interface modules receive what a Framer serdes units were sended over Delay-req messages, then by delay-req message transmissions to the first master control borad sgmii interface modules；
S1205：First master control borad sgmii interface modules receive what the first business board sgmii interface modules were transmitted Sync messages, then delay-req messages are sent to a Timer1 units；
S1206：First master control borad records the time that a Timer1 units receive delay-req messages, with system time Stamp Tin4Form preserve；
S1207：Field in first master control borad parsing delay-req messages after PTP information, before FCS verifications Domain, obtains the time tin that a Framer serdes units receive delay-req messages4；
S1208：First master control borad calculates a Framer serdes units and receives delay-req messages and first Timer1 units receive the time difference between delay-req messages, can specifically be designated as the 4th residence time Δ t4=Tin4- tin4；
S1209：First Timer1 units send delay-req messages to a Timer0 units, record a Timer0 The time that unit receives delay-req messages is the 4th time value, with time stamp T4Form preserve；
S1210：First Timer0 units send delay-req messages to a delay-req units, a delay- Req units receive and parse through delay-req messages；
Preferably, referring to Figure 13, for step S105：The main equipment is by the 4th time value, the 4th residence time And the 3rd residence time in second message is encapsulated into the 3rd message, and the 3rd message is sent to the reality of slave unit Existing process can include：
S1301：A Delay-resp units in main equipment produce delay-resp messages, by delay-req messages In the 4th time value T4, the 4th residence time Δ t4And the 3rd residence time Δ t in delay-req message amendments domain3Envelope Load delay-resp messages, and delay-resp messages are sent to a Timer0 units；
S1302：First Timer0 units receive the delay-resp messages that a Delay-resp units are sended over, and Delay-resp messages are sent to a Timer1 units；
S1303：First Timer1 units receive the delay-resp messages that a Timer0 units are sended over, and will Delay-resp messages send extremely to the first master control borad sgmii interface modules；
S1304：First master control borad sgmii interface modules receive the delay-resp reports that a Timer1 units are sended over Text, and by delay-resp message transmissions to the first business board sgmii interface modules；
S1305：First business board sgmii interface modules receive what the first master control borad sgmii interface modules were sended over Delay-resp messages, and delay-resp messages are sent to the first optical module through a Framer modules；
S1306：First optical module receives the delay-resp messages that send over of a Framer modules, and by delay- Resp messages are sent to slave unit.
Preferably for step S106：When three messages is received, the 4th time value of acquisition, the 4th stay the slave unit The 3rd residence time in time and the second message is stayed, and according to very first time value, the second time value, the 3rd time value With the 4th time value, and first residence time, the second residence time, the 3rd residence time and the 4th residence time, meter The time deviation and time delay between the main equipment and the slave unit are calculated, slave unit is adjusted by time deviation and time delay Current time, alloing the implementation process of master-slave equipment time synchronized includes：
By the synchronization mechanism of Precision Time Protocol (PTP, Precision Time Protocol), be worth according to the very first time, Second time value, the 3rd time value and the 4th time value distinguish corresponding time stamp T1、T2、T3And T4, and first it is resident when Between, the second residence time, the 3rd residence time and the 4th residence time, calculate the time deviation between main equipment and slave unit And time delay；Wherein, the first residence time Δ t1It is stored in the amendment domain Δ T of the first message1=Δ t1, the 3rd residence time Δ t3 It is stored in the amendment domain Δ T of the second message2=Δ t3。
It should be noted that the 3rd message can be the delay-resp messages that main equipment sends to slave unit, it is also possible to It is other kinds of message, the embodiment of the present invention is not especially limited to this.
In addition, very first time value T1In the precisetime field domains of the sync messages that can be received before slave unit Acquire, and the value, Δ T in the first message amendment domain1Can also be obtained in the amendment domain of above-mentioned sync messages Arrive.
Specifically, can be according to time deviationAnd time delayCalculate time deviation between master-slave equipment and when Prolong, and then the current time of the first master control borad is obtained according to PTP, realize the current time of the first master control borad of main equipment is same Walk the purpose of the second master control borad of slave unit.
Also, it should be noted that business board is also needed to and the master control borad time synchronized in respective equipment so that all devices In time of veneer be consistent, the process of specific time synchronized can be carried out as procedure described above, the embodiment of the present invention pair This is not repeated.
Embodiment three
Based on above-mentioned two embodiment identical technology design, referring to Figure 14, it illustrates provided in an embodiment of the present invention A kind of method for synchronizing time flow of main equipment side, the method can include：
S1401：Main equipment encapsulates to the first message the very first time value of generation with the first residence time for obtaining, and will First message is sent to slave unit；
S1402：Main equipment receives the second message sent by the slave unit；
Wherein, second message includes the 3rd residence time；
S1403：Main equipment obtains the 4th residence time and the 4th time value when second message is received；
S1404：Main equipment is by the 4th time value in second message, the 4th residence time and second message In the 3rd residence time be encapsulated into the 3rd message, and the 3rd message is sent to slave unit.
Exemplarily, main equipment can include first master control borad and at least one first business boards；First report Text is sync messages；Second message is delay-req messages；3rd message is delay-resp messages.
Preferably, the main equipment encapsulates to the first report the very first time value of generation and the first residence time for obtaining Text, and first message is sent to slave unit, specifically include：
The very first time value T of first master control borad record generation sync messages when the sync messages are generated1, And by the very first time value T1It is packaged in the reserved field of the sync messages；
First master control borad sends to first business board sync messages, and records first master control borad Send the time Tout of the sync messages1；
First business board parses the sync messages, obtain first master control borad send the sync messages when Between Tout1；
First business board records the first business board hair when the sync messages are sent to the slave unit Send the time tout of the sync messages1, and the time Tout of the sync messages is sent according to first master control borad1With institute State the time tout that the first business board sends the sync messages1Obtain the first residence time Δ t1, and by described first Residence time Δ t1It is packaged in the amendment domain Δ T in the sync messages1Sent to the slave unit.
Preferably, the main equipment obtains the 4th residence time and the 4th time value when second message is received；And 4th residence time and the 4th time value are packaged in second message, are specifically included：
First business board records first business board and receives described when the delay-req messages are received The time tin of delay-req messages4；
First business board sends to first master control borad delay-req messages；
The first master control borad record receives the time Tin of the delay-req messages4, and parse the delay- First business board that req messages are encapsulated receives the time tin of delay-req messages4, acquire the described 4th and stay Stay time Δ t4；
The 4th time value T of the first master control borad record parsing delay-req messages4。
Preferably, the main equipment is by the 4th time value, the 4th residence time and second message Three residence times are encapsulated into the 3rd message, and the 3rd message is sent to slave unit, specifically include：
First master control borad produces the delay-resp messages, by the 4th time value T4, the described 4th be resident Time Δ t4And the 3rd residence time Δ t in the delay-req messages amendment domain3It is encapsulated into the delay-resp reports Text, and the delay-resp messages are sent to first business board；
First business board receives the delay-resp messages that first master control borad is sended over, and will be described Delay-resp messages are sent to the slave unit.
Example IV
Based on previous embodiment identical technology design, referring to Figure 15, it illustrates one kind provided in an embodiment of the present invention The method for synchronizing time flow of slave unit side, the method can include：
S1501：Slave unit obtains the first residence time, the second residence time, very first time value when the first message is received With the second time value；
S1502：Slave unit records the 3rd time value, and the 3rd residence time for obtaining is encapsulated to the second message, and should Second message is sent to main equipment；
S1503：When three messages is received, the 4th included time value, the 4th stay slave unit in the 3rd message of acquisition The 3rd residence time in time and the second message is stayed, and according to very first time value, the second time value, the 3rd time value With the 4th time value, and first residence time, second residence time, the 3rd residence time and the described 4th Residence time, calculates the time deviation and time delay between the main equipment and the slave unit.
Exemplarily, the slave unit includes second master control borad and at least one second business boards；First report Text is sync messages；Second message is delay-req messages；3rd message is delay-resp messages.
Preferably, the slave unit obtains the first residence time, the second residence time, first when the first message is received Time value and the second time value；Specifically include：
Second business board records second business board and receives the sync reports when the sync messages are received The time tin of text2；
Second business board sends to second master control borad sync messages；
The second master control borad record receives the time Tin of the sync messages2；And parse the sync messages and obtain Second business board of encapsulation receives the time tin of sync messages2, acquire the second residence time Δ t2；
Second time value T of the second master control borad record parsing sync messages2；
The amendment domain Δ T of second master control borad record sync messages1In the first residence time Δ t1With Very first time value T in precisetime field domains1。
Preferably, the slave unit records the 3rd time value, and the 3rd residence time for obtaining is encapsulated to the second message, And send to main equipment second message, specifically include：
Second master control borad when the delay-req messages are generated the record generation delay-req messages the Three time value T3；
Second master control borad sends to second business board delay-req messages, and records described second Master control borad sends the time Tout of the delay-req messages3；
Second business board parses the delay-req messages, obtains second master control borad and sends the delay- The time Tout of req messages3；
Second business board records second industry when the delay-req messages are sent to the main equipment Business plate sends the time tout of the delay-req messages3, and the delay-req reports are sent according to second master control borad The time Tout of text3With the time tout that second business board sends the delay-req messages3The described 3rd is obtained to be resident Time Δ t3, and by the 3rd residence time Δ t3It is packaged in the amendment domain Δ T of the delay-req messages2To the master Equipment sends.
Preferably, the slave unit is when three messages is received, and obtains included the 4th time value in the 3rd message, the The 3rd residence time in four residence times and the second message, and during according to very first time value, the second time value, the 3rd Between value and the 4th time value, and first residence time, second residence time, the 3rd residence time and described 4th residence time, calculates the time deviation and time delay between the main equipment and the slave unit, specifically includes：
The synchronization mechanism that slave unit passes through Precision Time Protocol PTP, according to very first time value, second time Value, the 3rd time value and the 4th time value distinguish corresponding time stamp T1、T2、T3And T4, and the first residence time Δt1, the second residence time Δ t2, the 3rd residence time Δ t3With the 4th residence time Δ t4, calculate main equipment and slave unit Between time deviation and time delay；Wherein, the first residence time Δ t1It is stored in the amendment domain Δ T of first message1= Δt1, the 3rd residence time Δ t3It is stored in the amendment domain Δ T of second message2=Δ t3。
Embodiment five
Based on above-described embodiment identical technology design, referring to Figure 16, it illustrates one kind provided in an embodiment of the present invention Main equipment 160, the main equipment 160 includes：First master control borad 1601 and the first business board 1602；Wherein,
First master control borad 1601, for the very first time value of generation to be encapsulated to the with the first residence time for obtaining One message；
First business board 1602, for first message to be sent to slave unit；
And, the second message that reception is sent by the slave unit；Second message includes the 3rd residence time；
First master control borad 1601, is additionally operable to, when first business board 1602 receives second message, obtain 4th residence time and the 4th time value；
And, by the 3rd residence time envelope in the 4th time value, the 4th residence time and second message Load the 3rd message；
The business board, is additionally operable to send the 3rd message to slave unit.
Exemplarily, first message is sync messages；Second message is delay-req messages；Described 3rd Message is delay-resp messages.
Preferably, first master control borad 1601, specifically for described in the record generation when the sync messages are generated The very first time value T of sync messages1, and by the very first time value T1It is packaged in the reserved field of the sync messages；
And, the sync messages are sent to first business board 1602, and record the transmission sync messages Time Tout1；
First business board 1602, specifically for parsing the sync messages, obtains the transmission sync messages Time Tout1；
And, when the sync messages are sent to the slave unit, record sends the time of the sync messages tout1, and the time Tout of the sync messages is sent according to first master control borad 16011With first business board 1602 Send the time tout of the sync messages1Obtain the first residence time Δ t1, and by the first residence time Δ t1 It is packaged in the amendment domain Δ T in the sync messages1Sent to the slave unit.
Preferably, first business board 1602, specifically for when the delay-req messages are received, record is described First business board 1602 receives the time tin of the delay-req messages4；
And, the delay-req messages are sent to first master control borad 1601；
First master control borad 1601, the time Tin of the delay-req messages is received specifically for record4, and solve Analyse the time tin of the first business board 1602 reception delay-req messages that the delay-req messages are encapsulated4, obtain Obtain the 4th residence time Δ t4；
And, the 4th time value of the record parsing delay-req messages.
Preferably, first master control borad 1601, specifically for producing the delay-resp messages, by the delay- The 4th time value T in req messages4, and the 3rd residence time Δ t in the delay-req messages amendment domain3Envelope Load the delay-resp messages, and the delay-resp messages are sent to first business board 1602；
First business board 1602, specifically for receiving the delay- that first master control borad 1601 is sended over Resp messages, and the delay-resp messages are sent to the slave unit.
Embodiment six
Based on previous embodiment identical technology design, referring to Figure 17, it illustrates one kind provided in an embodiment of the present invention Slave unit 170, the slave unit 170 can include the second master control borad 1701 and the second business board 1702, wherein,
Second business board 1702, for receiving the first message；
Second master control borad 1701, for obtaining the first residence time, the second residence time, very first time value and second Time value；
And, the 3rd time value is recorded, and the 3rd residence time for obtaining is encapsulated to the second message；
Second business board 1702, is additionally operable to send second message to main equipment；
And, receive the 3rd message；
Second master control borad 1701, be additionally operable to obtain included the 4th time value in the 3rd message, the 4th it is resident when Between and the second message in the 3rd residence time, and according to very first time value, the second time value, the 3rd time value and Four time values, and first residence time, second residence time, the 3rd residence time and the described 4th are resident Time, calculate the time deviation and time delay between the main equipment and the slave unit.
Exemplarily, first message is sync messages；Second message is delay-req messages；Described 3rd Message is delay-resp messages.
Preferably, second business board 1702, specifically for when the sync messages are received, recording second industry Business plate 1702 receives the time tin of the sync messages2；
And, the sync messages are sent to second master control borad 1701；
Second master control borad 1701, the time Tin of the sync messages is received specifically for record2；And parse institute State the time tin that second business board 1702 that sync messages are encapsulated receives sync messages2, acquire described Two residence time Δ t2；
And, the second time value T of the record parsing sync messages2。
The amendment domain Δ T of second master control borad 1701 record sync messages1In the first residence time Δ t1With Very first time value T in precisetime field domains1。
Preferably, second master control borad 1701, specifically for the record generation institute when the delay-req messages are generated State the 3rd time value T of delay-req messages3；
And, the delay-req messages are sent to second business board 1702, and record second master control borad The 1701 time Tout for sending the delay-req messages3；
Second business board 1702, specifically for parsing the delay-req messages, obtains second master control borad The 1701 time Tout for sending the delay-req messages3；
And, when the delay-req messages are sent to the main equipment, record second business board 1702 and send out Send the time tout of the delay-req messages3, and the delay-req messages are sent according to second master control borad 1701 Time Tout3With the time tout that second business board 1702 sends the delay-req messages3The described 3rd is obtained to stay Stay time Δ t3, and by the 3rd residence time Δ t3It is packaged in the amendment domain Δ T of the delay-req messages2To described Main equipment sends.
Preferably, second master control borad 1701, specifically for the synchronization mechanism by Precision Time Protocol PTP, according to The very first time value, second time value, the 3rd time value and the 4th time value distinguish corresponding timestamp T1、T2、T3And T4, and the first residence time Δ t1, the second residence time Δ t2, the 3rd residence time Δ t3 With the 4th residence time Δ t4, calculate the time deviation and time delay between the main equipment and the slave unit.
Embodiment seven
Based on previous embodiment identical technology design, referring to Figure 18, it illustrates one kind provided in an embodiment of the present invention The system 180 of time synchronized, the system 180 includes：Main equipment 160 and slave unit 170；
Wherein,
The main equipment 160, for the very first time value of generation and the first residence time for obtaining to be encapsulated to the first report Text, and first message is sent to the slave unit 170；
And, the second message that reception is sent by the slave unit 170；Second message includes the 3rd residence time；
And, when second message is received, obtain the 4th residence time and the 4th time value；Wherein, described second Message includes the 3rd residence time；
And, by the 4th time value in second message, the 4th residence time and second message Three residence times are encapsulated into the 3rd message, and the 3rd message is sent to slave unit 170；
The slave unit 170, for when the first message is received, obtaining the first residence time, the second residence time, first Time value and the second time value；
And, record obtain the 3rd time value, by obtain the 3rd residence time encapsulate to the second message, and by this second Message is sent to the main equipment 160；
And, when three messages is received, obtain included the 4th time value in the 3rd message, the 4th residence time with And the second the 3rd residence time in message, and during according to very first time value, the second time value, the 3rd time value and the 4th Between be worth, and the numerical value in first message and the second message amendment domain calculates the main equipment 160 with the slave unit Time deviation and time delay between 170.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program Product.Therefore, the present invention can be using the shape of the embodiment in terms of hardware embodiment, software implementation or combination software and hardware Formula.And, the present invention can be used can use storage in one or more computers for wherein including computer usable program code The form of the computer program product implemented on medium (including but not limited to magnetic disk storage and optical memory etc.).
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product Figure and/or block diagram are described.It should be understood that every first-class during flow chart and/or block diagram can be realized by computer program instructions The combination of flow and/or square frame in journey and/or square frame and flow chart and/or block diagram.These computer programs can be provided The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices The device of the function of being specified in present one flow of flow chart or multiple one square frame of flow and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in can guide computer or other programmable data processing devices with spy In determining the computer-readable memory that mode works so that instruction of the storage in the computer-readable memory is produced and include finger Make the manufacture of device, the command device realize in one flow of flow chart or multiple one square frame of flow and/or block diagram or The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented treatment, so as in computer or The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in individual square frame or multiple square frames.
The above, only presently preferred embodiments of the present invention is not intended to limit the scope of the present invention.

Claims (21)

1. a kind of method of time synchronized, it is characterised in that methods described is applied to main equipment, and methods described includes：
Main equipment encapsulates to the first message the very first time value of generation with the first residence time for obtaining, and described first is reported Text is sent to slave unit；
The main equipment receives the second message sent by the slave unit；Wherein, when second message is resident including the 3rd Between；
The main equipment obtains the 4th residence time and the 4th time value when second message is received；
The main equipment seals the 3rd residence time in the 4th time value, the 4th residence time and second message Load the 3rd message, and the 3rd message is sent to slave unit.
2. method according to claim 1, it is characterised in that the main equipment includes first master control borad and at least Individual first business board；First message is sync messages；Second message is delay-req messages；3rd message It is delay-resp messages.
3. method according to claim 2, it is characterised in that very first time value that the main equipment will be generated with obtain First residence time is encapsulated to the first message, and first message is sent to slave unit, is specifically included：
The very first time value T of first master control borad record generation sync messages when the sync messages are generated1, and By the very first time value T1It is packaged in the reserved field of the sync messages；
First master control borad sends to first business board sync messages, and records the first master control borad transmission The time Tout of the sync messages1；
First business board parses the sync messages, obtains the time that first master control borad sends the sync messages Tout1；
First business board records first business board and sends institute when the sync messages are sent to the slave unit State the time tout of sync messages1, and the time Tout of the sync messages is sent according to first master control borad1With described One business board sends the time tout of the sync messages1Obtain the first residence time Δ t1, and described first is resident Time Δ t1It is packaged in the amendment domain Δ T in the sync messages1Sent to the slave unit.
4. method according to claim 2, it is characterised in that the main equipment is obtained when second message is received 4th residence time and the 4th time value, specifically include：
First business board records first business board and receives the delay- when the delay-req messages are received The time tin of req messages4；
First business board sends to first master control borad delay-req messages；
The first master control borad record receives the time Tin of the delay-req messages4, and parse the delay-req reports First business board that text is encapsulated receives the time tin of delay-req messages4, acquire the described 4th it is resident when Between Δ t4；
The 4th time value T of the first master control borad record parsing delay-req messages4。
5. method according to claim 2, it is characterised in that be resident for the 4th time value, the 4th by the main equipment The 3rd residence time in time and second message is encapsulated into the 3rd message, and the 3rd message is sent to from setting It is standby, specifically include：
First master control borad produces the delay-resp messages, by the 4th time value T4, the 4th residence time Δ t4And the 3rd residence time Δ t in the delay-req messages amendment domain3The delay-resp messages are encapsulated into, and will The delay-resp messages are sent to first business board；
First business board receives the delay-resp messages that first master control borad is sended over, and will be described Delay-resp messages are sent to the slave unit.
6. a kind of method of time synchronized, it is characterised in that methods described is applied to slave unit, and methods described includes：
Slave unit obtains the first residence time, the second residence time, very first time value and the second time when the first message is received Value；
Slave unit records the 3rd time value, and the 3rd residence time for obtaining is encapsulated to the second message, and by second message Send to main equipment；
Slave unit when three messages is received, obtain included the 4th time value in the 3rd message, the 4th residence time and The 3rd residence time in second message, and according to very first time value, the second time value, the 3rd time value and the 4th time Value, and first residence time, second residence time, the 3rd residence time and the 4th residence time, Calculate the time deviation and time delay between the main equipment and the slave unit.
7. method according to claim 6, it is characterised in that the slave unit includes second master control borad and at least Individual second business board；First message is sync messages；Second message is delay-req messages；3rd message It is delay-resp messages.
8. method according to claim 7, it is characterised in that the slave unit obtains first when the first message is received Residence time, the second residence time, very first time value and the second time value, specifically include：
Second business board records second business board and receives the sync messages when the sync messages are received Time tin2；
Second business board sends to second master control borad sync messages；
The second master control borad record receives the time Tin of the sync messages2；And parse the sync messages and encapsulated Second business board receive the time tin of sync messages2, acquire the second residence time Δ t2；
Second time value T of the second master control borad record parsing sync messages2；
The amendment domain Δ T of second master control borad record sync messages1In the first residence time Δ t1With in reserved field One time value T1。
9. method according to claim 7, it is characterised in that the slave unit records the 3rd time value, and will obtain 3rd residence time is encapsulated to the second message, and second message is sent to main equipment, is specifically included：
When second master control borad records the 3rd of the generation delay-req messages when the delay-req messages are generated Between value T3；
Second master control borad sends to second business board delay-req messages, and records second master control Plate sends the time Tout of the delay-req messages3；
Second business board parses the delay-req messages, obtains second master control borad and sends the delay-req reports The time Tout of text3；
Second business board records second business board when the delay-req messages are sent to the main equipment Send the time tout of the delay-req messages3, and the delay-req messages are sent according to second master control borad Time Tout3With the time tout that second business board sends the delay-req messages3Obtain the 3rd residence time Δt3, and by the 3rd residence time Δ t3It is packaged in the amendment domain Δ T of the delay-req messages2To the main equipment Send.
10. method according to claim 7, it is characterised in that the slave unit obtains the 3rd when three messages is received The 3rd residence time in message in the 4th included time value, the 4th residence time and the second message, and according to described Very first time value, the second time value, the 3rd time value and the 4th time value, and first residence time, described second stay Time, the 3rd residence time and the 4th residence time are stayed, is calculated between the main equipment and the slave unit Time deviation and time delay, specifically include：
The synchronization mechanism that the slave unit passes through Precision Time Protocol PTP, according to very first time value, second time Value, the 3rd time value and the 4th time value distinguish corresponding time stamp T1、T2、T3And T4, and the first residence time Δt1, the second residence time Δ t2, the 3rd residence time Δ t3With the 4th residence time Δ t4, calculate main equipment and slave unit Between time deviation and time delay；Wherein, the first residence time Δ t1It is stored in the amendment domain Δ T of first message1= Δt1, the 3rd residence time Δ t3It is stored in the amendment domain Δ T of second message2=Δ t3。
11. a kind of main equipments, it is characterised in that the main equipment includes：First master control borad and the first business board；Wherein,
First master control borad, for the very first time value of generation to be encapsulated to the first message with the first residence time for obtaining；
First business board, for first message to be sent to slave unit；
And, the second message that reception is sent by the slave unit；Second message includes the 3rd residence time；
First master control borad, is additionally operable to, when first business board receives second message, obtain the 4th residence time With the 4th time value；
And, the 3rd residence time in the 4th time value, the 4th residence time and second message is encapsulated into 3rd message；
The business board, is additionally operable to send the 3rd message to slave unit.
12. main equipments according to claim 11, it is characterised in that first message is sync messages；Described second Message is delay-req messages；3rd message is delay-resp messages.
13. main equipments according to claim 12, it is characterised in that first master control borad, specifically in generation institute The very first time value T of record generation sync messages when stating sync messages1, and by the very first time value T1It is packaged in institute State the reserved field of sync messages；
And, the sync messages are sent to first business board, and record the time Tout for sending the sync messages1；
First business board, specifically for parsing the sync messages, obtains the time for sending the sync messages Tout1；
And, when the sync messages are sent to the slave unit, record sends the time tout of the sync messages1, and The time Tout of the sync messages is sent according to first master control borad1The sync messages are sent with first business board Time tout1Obtain the first residence time Δ t1, and by the first residence time Δ t1It is packaged in the sync reports Amendment domain Δ T in text1Sent to the slave unit.
14. main equipments according to claim 12, it is characterised in that first business board, specifically for receiving institute When stating delay-req messages, the time tin that first business board receives the delay-req messages is recorded4；
And, the delay-req messages are sent to first master control borad；
First master control borad, the time Tin of the delay-req messages is received specifically for record4, and parse described First business board that delay-req messages are encapsulated receives the time tin of delay-req messages4, acquire described 4th residence time Δ t4；
And, the 4th time value T of the record parsing delay-req messages4。
15. main equipments according to claim 12, it is characterised in that first master control borad, it is described specifically for producing Delay-resp messages, by the 4th time value T in the delay-req messages4, and the delay-req messages The 3rd residence time Δ t in amendment domain3The delay-resp messages are encapsulated into, and the delay-resp messages are sent To first business board；
First business board, specifically for receiving the delay-resp messages that first master control borad is sended over, and The delay-resp messages are sent to the slave unit.
16. a kind of slave units, it is characterised in that the slave unit includes the second master control borad and the second business board, wherein, described the Two business boards, for receiving the first message；
Second master control borad, for obtaining the first residence time, the second residence time, very first time value and the second time value；
And, the 3rd time value is recorded, and the 3rd residence time for obtaining is encapsulated to the second message；
Second business board, is additionally operable to send second message to main equipment；
And, receive the 3rd message；
Second master control borad, is additionally operable to obtain included the 4th time value in the 3rd message, the 4th residence time and the The 3rd residence time in two messages, and according to very first time value, the second time value, the 3rd time value and the 4th time Value, and first residence time, second residence time, the 3rd residence time and the 4th residence time, Calculate the time deviation and time delay between the main equipment and the slave unit.
17. slave units according to claim 16, it is characterised in that first message is sync messages；Described second Message is delay-req messages；3rd message is delay-resp messages.
18. slave units according to claim 17, it is characterised in that second business board, specifically for receiving institute When stating sync messages, the time tin that second business board receives the sync messages is recorded2；
And, the sync messages are sent to second master control borad；
Second master control borad, the time Tin of the sync messages is received specifically for record2；And parse the sync messages Second business board for being encapsulated receives the time tin of sync messages2, acquire the second residence time Δ t2；
Second time value T of the second master control borad record parsing sync messages2；
The amendment domain Δ T of second master control borad record sync messages1In the first residence time Δ t1With in reserved field One time value T1。
19. slave units according to claim 17, it is characterised in that second master control borad, specifically in generation institute 3rd time value T of record generation delay-req messages when stating delay-req messages3；
And, the delay-req messages are sent to second business board, and it is described to record the second master control borad transmission The time Tout of delay-req messages3；
Second business board, specifically for parsing the delay-req messages, obtains second master control borad and sends described The time Tout of delay-req messages3；
And, when the delay-req messages are sent to the main equipment, record second business board and send described The time tout of delay-req messages3, and the time Tout of the delay-req messages is sent according to second master control borad3 With the time tout that second business board sends the delay-req messages3Obtain the 3rd residence time Δ t3, and By the 3rd residence time Δ t3It is packaged in the amendment domain Δ T of the delay-req messages2Sent to the main equipment.
20. slave units according to claim 17, it is characterised in that second master control borad, specifically for by accurate The synchronization mechanism of time protocol PTP, according to very first time value, second time value, the 3rd time value and described 4th time value distinguishes corresponding time stamp T1、T2、T3And T4, and the first residence time Δ t1, described second it is resident when Between Δ t2, the 3rd residence time Δ t3With the 4th residence time Δ t4, the main equipment is calculated with the slave unit Between time deviation and time delay.
21. a kind of systems of time synchronized, it is characterised in that the system includes：Main equipment and slave unit；Wherein,
The main equipment, for the very first time value of generation to be encapsulated to the first message with the first residence time for obtaining, and will First message is sent to the slave unit；
And, the second message that reception is sent by the slave unit；Second message includes the 3rd residence time；
And, when second message is received, obtain the 4th residence time and the 4th time value；Wherein, second message Including the 3rd residence time；
And, the 3rd in the 4th time value in second message, the 4th residence time and second message is stayed Stay the time to be encapsulated into the 3rd message, and the 3rd message is sent to slave unit；
The slave unit, for when the first message is received, obtaining the first residence time, the second residence time, very first time value With the second time value；
And, record obtains the 3rd time value, and the 3rd residence time for obtaining is encapsulated to the second message, and by second message Send to the main equipment；
And, when three messages is received, obtain included the 4th time value in the 3rd message, the 4th residence time and the The 3rd residence time in two messages, and according to very first time value, the second time value, the 3rd time value and the 4th time Value, and first residence time, second residence time, the 3rd residence time and the 4th residence time, Calculate the time deviation and time delay between the main equipment and the slave unit.
CN201510918940.3A 2015-12-11 2015-12-11 A kind of method, apparatus and system that clock is synchronous Active CN106877959B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201510918940.3A CN106877959B (en) 2015-12-11 2015-12-11 A kind of method, apparatus and system that clock is synchronous
PCT/CN2016/098770 WO2017096994A1 (en) 2015-12-11 2016-09-12 Clock synchronization method, device and system, and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510918940.3A CN106877959B (en) 2015-12-11 2015-12-11 A kind of method, apparatus and system that clock is synchronous

Publications (2)

Publication Number Publication Date
CN106877959A true CN106877959A (en) 2017-06-20
CN106877959B CN106877959B (en) 2019-04-30

Family

ID=59012639

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510918940.3A Active CN106877959B (en) 2015-12-11 2015-12-11 A kind of method, apparatus and system that clock is synchronous

Country Status (2)

Country Link
CN (1) CN106877959B (en)
WO (1) WO2017096994A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107678764A (en) * 2017-09-30 2018-02-09 杭州迪普科技股份有限公司 A kind of method and device based on ISSU upgrading VSM systems
CN108737007A (en) * 2018-08-24 2018-11-02 新华三技术有限公司 A kind of method for synchronizing time, device and equipment
CN113079183A (en) * 2021-04-25 2021-07-06 安徽科大擎天科技有限公司 Inter-board communication system of distributed firewall and communication method thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109995557B (en) * 2017-12-29 2022-05-13 中国移动通信集团陕西有限公司 Communication method and device
CN116436555B (en) * 2023-06-09 2023-08-18 新华三技术有限公司 Time synchronization method and device and distributed network equipment

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102082697A (en) * 2009-11-27 2011-06-01 华为技术有限公司 Communication path asymmetric time delay measuring method, device and system
CN102237995A (en) * 2010-04-20 2011-11-09 中兴通讯股份有限公司 Time processing device and method based on device Precision Time Protocol
CN102447745A (en) * 2012-01-11 2012-05-09 中兴通讯股份有限公司 Method and device for processing residence time of message on transparent clock (TC) equipment
CN103441833A (en) * 2013-08-26 2013-12-11 瑞斯康达科技发展股份有限公司 Method and system for synchronizing frequency of master unit and frequency of slave unit
CN103581205A (en) * 2013-11-20 2014-02-12 盛科网络（苏州）有限公司 Method and system for realizing precise timestamps in multiple MACs (media access controls)
WO2014187369A1 (en) * 2013-07-23 2014-11-27 中兴通讯股份有限公司 Method and apparatus for processing time synchronization
US20150071309A1 (en) * 2013-09-11 2015-03-12 Khalifa University of Science , Technology, and Research Method and devices for frequency distribution

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103441832B (en) * 2013-08-22 2016-12-28 瑞斯康达科技发展股份有限公司 Clock synchronizing method based on PTP, system and equipment
CN103546268B (en) * 2013-10-15 2016-08-10 瑞斯康达科技发展股份有限公司 The compensation method of a kind of system time and equipment
US9270395B2 (en) * 2014-05-05 2016-02-23 Telefonaktiebolaget L M Ericsson (Publ) Method for robust PTP synchronization with default 1588V2 profile

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102082697A (en) * 2009-11-27 2011-06-01 华为技术有限公司 Communication path asymmetric time delay measuring method, device and system
CN102237995A (en) * 2010-04-20 2011-11-09 中兴通讯股份有限公司 Time processing device and method based on device Precision Time Protocol
CN102447745A (en) * 2012-01-11 2012-05-09 中兴通讯股份有限公司 Method and device for processing residence time of message on transparent clock (TC) equipment
WO2014187369A1 (en) * 2013-07-23 2014-11-27 中兴通讯股份有限公司 Method and apparatus for processing time synchronization
CN103441833A (en) * 2013-08-26 2013-12-11 瑞斯康达科技发展股份有限公司 Method and system for synchronizing frequency of master unit and frequency of slave unit
US20150071309A1 (en) * 2013-09-11 2015-03-12 Khalifa University of Science , Technology, and Research Method and devices for frequency distribution
CN103581205A (en) * 2013-11-20 2014-02-12 盛科网络（苏州）有限公司 Method and system for realizing precise timestamps in multiple MACs (media access controls)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107678764A (en) * 2017-09-30 2018-02-09 杭州迪普科技股份有限公司 A kind of method and device based on ISSU upgrading VSM systems
CN108737007A (en) * 2018-08-24 2018-11-02 新华三技术有限公司 A kind of method for synchronizing time, device and equipment
CN113079183A (en) * 2021-04-25 2021-07-06 安徽科大擎天科技有限公司 Inter-board communication system of distributed firewall and communication method thereof
CN113079183B (en) * 2021-04-25 2022-09-06 安徽科大擎天科技有限公司 Inter-board communication system of distributed firewall and communication method thereof

Also Published As

Publication number Publication date
WO2017096994A1 (en) 2017-06-15
CN106877959B (en) 2019-04-30

Similar Documents

Publication Publication Date Title
CN106877959B (en) A kind of method, apparatus and system that clock is synchronous
US10673565B2 (en) Confirming data accuracy in a distributed control system
CN109150559B (en) Time-triggered Ethernet simulation system
Lim et al. Performance analysis of the IEEE 802.1 ethernet audio/video bridging standard
Fedullo et al. A comprehensive review on time sensitive networks with a special focus on its applicability to industrial smart and distributed measurement systems
CN107579793A (en) The optimization method of time synchronized, device and equipment between a kind of communication network device
CN107800528A (en) A kind of methods, devices and systems for transmitting synchronizing information
Striffler et al. Time-sensitive networking in 5th generation cellular networks-current state and open topics
CN103929293A (en) Asymmetrically-delayed time synchronization method and system
CN106506107B (en) A kind of ntp server time service implementation method based on hardware timestamping
CN108965971A (en) MCVF multichannel voice frequency synchronisation control means, control device and electronic equipment
CN109687927A (en) A kind of method, communication equipment and the communication system of determining timestamp
CN104584492B (en) Message processing method, equipment and system
CN104052588B (en) For the method to realize the precise time stamp by IEEE1588 using the system of FEC encoder
CN108989246B (en) Audio transmission between devices using sparse streams
CN106302244A (en) A kind of Apparatus for () and method therefor eliminating network transmission jitter
Xu et al. A survey on time-sensitive networking standards and applications for intelligent driving
CN103746878A (en) Simulation system for measuring transmission time of SpaceWire data packets
Simon et al. Ethernet with time sensitive networking tools for industrial networks
DE112019004576T5 (en) Communication device and communication system
CN106301642B (en) A kind of clock synchronizing method and device of passive optical network
CN103813382A (en) Clock synchronization method, device and system
CN105119675B (en) A kind of synchronous method and synchronization system of target device
Tikhonov et al. Modeling the conveyor-modular transfer of multimedia data in a sensor network of transport system
Chahed et al. TSN Network Scheduling—Challenges and Approaches

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20170620

Assignee: Xi'an Chris Semiconductor Technology Co. Ltd.

Assignor: SHENZHEN ZTE MICROELECTRONICS TECHNOLOGY CO., LTD.

Contract record no.: 2019440020036

Denomination of invention: Clock synchronization method, equipment and system thereof

Granted publication date: 20190430

License type: Common License

Record date: 20190619

EE01 Entry into force of recordation of patent licensing contract