WO2019149280A1

WO2019149280A1 - Method for generating synchronization message, synchronization apparatus, and computer readable storage medium

Info

Publication number: WO2019149280A1
Application number: PCT/CN2019/074550
Authority: WO
Inventors: 徐春松; 钟炜; 沈益明
Original assignee: 中兴通讯股份有限公司
Priority date: 2018-02-02
Filing date: 2019-02-02
Publication date: 2019-08-08
Also published as: CN110138486B; CN110138486A

Abstract

Provided is a method for generating a synchronization message, the method comprising: upon receiving a synchronization (Sync) message, configuring identification information of the Sync message in the Sync message, and sending the Sync message to a first synchronization apparatus; receiving the identification information fed back by the first synchronization apparatus and time synchronization information corresponding to the Sync message; and configuring, when receipt of a Follow_Up message corresponding to the Sync message is confirmed on the basis of the identification information, the time synchronization information in the Follow_Up message. Further disclosed are a synchronization apparatus and a computer readable storage medium.

Description

Synchronous message generation method, synchronization device and computer readable storage medium

cross reference

The invention claims the priority of the Chinese patent application filed on February 2, 2018, the Chinese Patent Office, the application number is 201810107668.4, and the invention name is "synchronized message generation method, device, system, synchronization device and storage medium". The entire contents of the application are incorporated herein by reference.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method for generating a synchronous message, a synchronization device, and a computer readable storage medium.

Background technique

In a communication network, the normal operation of many services requires communication network devices to perform time synchronization to keep the time or frequency difference between devices in the entire communication network within reasonable errors. PTP (Precision Time Protoco1) is a network time synchronization protocol with sub-microsecond time synchronization performance.

The PTP protocol includes two-step and two-step PTP protocol standards. Some current communication network devices are limited by hardware and/or software, and cannot be time synchronized according to the two-step PTP protocol standard. The timestamps specified by the two-step PTP protocol standard are obtained by other means, and are passed according to timestamps. The time synchronization calculation formula specified by the two-step PTP protocol standard performs time synchronization. Therefore, the two-step PTP protocol standard is not widely applicable to devices in communication networks.

Summary of the invention

The technical problem to be solved by the present invention is that some communication network devices in the prior art cannot carry time synchronization information in the Followup message according to the two-step PTP protocol standard.

The technical solution adopted by the present invention is to provide a method for generating a synchronous message, including: when receiving a synchronous Sync message, setting identification information of the Sync message in the Sync message, and setting the Sync message Transmitting the message to the first synchronization device; receiving the identifier information that is fed back by the first synchronization device and time synchronization information corresponding to the Sync message; and confirming that the Sync message is received according to the identifier information In the Followup message, the time synchronization information is set in the Followup message.

The present invention further provides a second synchronization device, the second synchronization device comprising a processor and a memory; the processor is configured to execute a program for generating a synchronization message stored in the memory to implement the generation of the synchronization message The steps of the method.

The present invention further provides a method for generating a synchronization message, comprising: when receiving the Sync message sent by the second synchronization device, sending the Sync message to a next communication node; sending according to the next communication node And the time synchronization information corresponding to the Sync message is obtained, and the identifier information carried in the Sync message and the time synchronization information are fed back to the second synchronization device.

The present invention also provides a first synchronization device, the first synchronization device comprising a processor and a memory; the processor is configured to execute a program for generating a synchronization message stored in the memory, to implement the generation of the synchronization message. The steps of the method.

The present invention also provides a synchronization message generating apparatus, including: a setting module, configured to: when receiving a synchronous Sync message, set identification information of the Sync message in the Sync message, and set the The Sync message is sent to the first synchronization device, and the receiving module is configured to receive the identifier information that is fed back by the first synchronization device and the time synchronization information corresponding to the Sync packet, and the synchronization module is configured to: when the identifier is based on the identifier When the information confirms that the Followup message corresponding to the Sync message is received, the time synchronization information is set in the Followup message.

The present invention further provides a device for generating a synchronization message, comprising: a sending module, configured to: when receiving the Sync message sent by the second synchronization device, send the Sync message to a next communication node; And acquiring, according to the sending time of the Sync message, the time synchronization information corresponding to the Sync message, and the first feedback module, configured to send the identifier information carried in the Sync message, And the time synchronization information is fed back to the second synchronization device.

The present invention further provides a synchronization message generation system, including: a second synchronization device, configured to: when receiving a synchronous Sync message, set identification information of the Sync message in the Sync message, and Sending the Sync message to the first synchronization device; the first synchronization device, when receiving the Sync message, sending the Sync message to the next communication node; sending according to the next communication node And the time synchronization information corresponding to the Sync message is obtained, and the identifier information carried in the Sync message and the time synchronization information are fed back to the second synchronization device; The second synchronization device is further configured to set the time synchronization information in the Followup message when it is confirmed that the Followup message corresponding to the Sync message is received according to the identifier information.

The present invention also provides a computer readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the synchronization report described above The steps of the text generation method.

DRAWINGS

The one or more embodiments are exemplified by the accompanying drawings in the accompanying drawings, and FIG. The figures in the drawings do not constitute a scale limitation unless otherwise stated.

1 is a flowchart of a method for generating a synchronization message according to first and second embodiments of the present invention;

2 is a flowchart of a method for generating a synchronization message according to a third embodiment of the present invention;

3 is a flowchart of a method for generating a synchronization message according to a fourth embodiment of the present invention;

4 is a schematic structural diagram of a device for generating a synchronization message according to fifth and sixth embodiments of the present invention;

FIG. 5 is a schematic structural diagram of a device for generating a synchronization message according to a seventh embodiment of the present invention; FIG.

6 is a schematic structural diagram of a device for generating a synchronization message according to an eighth embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a system for generating a synchronization message according to ninth and tenth embodiments of the present invention; FIG.

8 is a schematic structural diagram of a synchronizing device according to an eleventh embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a synchronizing device according to a twelfth embodiment of the present invention.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

PTP time synchronization involves three clock devices, including: OC (Ordinary Clock). The OC clock node has only one PTP port in the same PTP domain to participate in time synchronization, and time synchronization with the upstream clock node through the PTP port; BC (Boundary Clock), the BC clock node has multiple PTP ports in the same PTP domain to participate in time synchronization. The BC clock synchronizes time from the upstream clock node through one of the PTP ports, and performs time on the downstream clock node through the remaining ports. Synchronization; TC (Transparent Clock), the TC time node does not need to keep time synchronization with other clock nodes. The TC clock only forwards PTP protocol packets and performs PAT protocol packet forwarding delay correction without passing through any port. Time synchronization.

A first embodiment of the present invention, a method for generating a synchronization message, as shown in FIG. 1, includes the following specific steps:

In step S101, when the Sync message is received, the identification information of the Sync message is set in the Sync message, and the Sync message is sent to the first synchronization device.

Optionally, the method for setting the identifier information of the Sync message in the Sync message includes, but is not limited to, setting the identifier information of the Sync message in the message header of the Sync message.

The identification information of the Sync packet includes at least one of the following information: the destination IP address of the Sync packet (Internet Protocol), the source IP address of the Sync packet, and the source port of the Sync packet ( The port number, the destination port number of the Sync message, the protocol number of the Sync message, the source port identifier of the Sync message, and the serial number of the Sync message.

Optionally, the step S101 includes: when receiving the Sync message, acquiring the identification information of the Sync message; setting the identification information of the Sync message in the Sync message, and sending the Sync message carrying the identification information. The first synchronization device is configured to feed back, by the first synchronization device, the identification information carried in the Sync message based on the received Sync message.

Step S102: Receive the identifier information that is fed back by the first synchronization device and time synchronization information corresponding to the Sync packet.

Optionally, in the case that the Sync message sent by the control layer is received, the time synchronization information corresponding to the Sync message includes: sending time of the Sync message sent by the first synchronization device to the next communication node.

Optionally, in the case that the Sync message sent by the previous communication node is received, the time synchronization information corresponding to the Sync message includes: a synchronization time difference; wherein the synchronization time difference is the first synchronization device to the next communication node. The difference between the sending time of sending the Sync message and the receiving time of receiving the Sync message.

Step S103: When it is confirmed that the Followup message corresponding to the Sync message is received based on the identifier information, time synchronization information is set in the Followup message.

Optionally, the method for setting the time synchronization information in the Followup message includes, but is not limited to, setting the time synchronization information in the preset field of the Followup message.

The method for generating a synchronization message according to the first embodiment of the present invention enables the network communication device to carry time synchronization information in the Followup message according to the two-step PTP protocol standard, so as to implement the two-step PTP protocol of the network communication device. The standard time synchronization makes a wide range of network communication equipment suitable for the two-step PTP protocol standard; it simplifies the control plane selection, reduces the complexity of the control plane implementation, and simplifies the control plane design flow.

A second embodiment of the present invention, a method for generating a synchronization packet, as shown in FIG. 1, includes the following specific steps:

The Sync message identification information includes at least one of the following information: a destination IP address of the Sync message, a source IP address of the Sync message, a source port number of the Sync message, a destination port number of the Sync message, and a Sync message. The protocol number, the source port identifier of the Sync message, and the serial number of the Sync message.

Optionally, the method for setting the time synchronization information in the Followup message includes, but is not limited to, sending the Followup message to the first synchronization device when the time synchronization information is not received, and receiving the first synchronization device when the time synchronization information is not received. When the Followup message and the time synchronization information are fed back, the time synchronization information is set in the Followup message, and the Followup message is stopped from being sent to the first synchronization device.

The method for generating a synchronization message according to the second embodiment of the present invention enables the network communication device to carry time synchronization information in the Followup message according to the two-step PTP protocol standard, so as to implement the two-step PTP protocol of the network communication device. The standard time synchronization makes a wide range of network communication equipment suitable for the two-step PTP protocol standard; it simplifies the control plane selection, reduces the complexity of the control plane implementation, and simplifies the control plane design flow.

A third embodiment of the present invention, a method for generating a synchronization message, as shown in FIG. 2, includes the following specific steps:

Step S301, when receiving the Sync message sent by the second synchronization device, sending the Sync message to the next communication node.

In step S302, the time synchronization information corresponding to the Sync message is obtained according to the sending time of the Sync message sent by the next communication node.

Optionally, the step S302 includes: determining whether the Sync message received by the second synchronization device is sent by the control plane or sent by the previous communication node; and determining that the Sync message received by the second synchronization device is controlled. When the layer sends, the time synchronization information is set to the sending time of the Sync message sent by the next communication node; if it is determined that the Sync message received by the second synchronization device is sent by the previous communication node, the time is The synchronization information is set to a synchronization time difference; wherein, the synchronization time difference is a difference between the transmission time of the Sync message sent by the next communication node and the reception time of the Sync message received by the second synchronization device.

Step S303, the identifier information carried in the Sync message and the time synchronization information are fed back to the second synchronization device.

Optionally, the step S303 includes: feeding back the identifier information carried in the Sync packet and the time synchronization information to the second synchronization device, so that the second synchronization device confirms that the Sync message is received according to the identifier information. When the followup packet is received, the time synchronization information is set in the Followup message.

The method for generating a synchronization message according to the third embodiment of the present invention enables the network communication device to carry time synchronization information in the Followup message according to the two-step PTP protocol standard, so as to implement the two-step PTP protocol of the network communication device. The standard time synchronization makes a wide range of network communication equipment suitable for the two-step PTP protocol standard; it simplifies the control plane selection, reduces the complexity of the control plane implementation, and simplifies the control plane design flow.

A fourth embodiment of the present invention, a method for generating a synchronization packet, as shown in FIG. 3, includes the following specific steps:

Step S401, when receiving the Sync message sent by the second synchronization device, sending the Sync message to the next communication node.

Optionally, in step S401, the method further includes: when the number of received Sync messages is greater than the first set threshold, buffering the next received Sync message.

In this embodiment, the first set threshold is not specifically limited, and may be set according to an engineer's engineering experience, or may be set according to an optimal threshold obtained by a limited number of experiments, or may be obtained according to a limited number of computer simulations. Good threshold settings.

By buffering the Sync message received by the first set threshold, the overflow of the Sync message can be effectively avoided, and the overflow protection mechanism is provided for the Sync message.

Step S402: Acquire time synchronization information corresponding to the Sync message according to the sending time of the Sync message sent by the next communication node.

Optionally, the step S402 includes: determining whether the Sync message received by the second synchronization device is sent by the control plane or sent by the previous communication node; and determining that the Sync message received by the second synchronization device is controlled When the layer sends, the time synchronization information is set to the sending time of the Sync message sent by the next communication node; if it is determined that the Sync message received by the second synchronization device is sent by the previous communication node, the time is The synchronization information is set to a synchronization time difference; wherein, the synchronization time difference is a difference between the transmission time of the Sync message sent by the next communication node and the reception time of the Sync message received by the second synchronization device.

Step S403: When receiving the Followup message sent by the second synchronization device, the Followup message is fed back to the second synchronization device.

Optionally, in step S403, the method further includes: when the number of times the Followup message is fed back to the second synchronization device is greater than the second set threshold, the feedback of the Followup message to the second synchronization device is stopped.

In this embodiment, the second set threshold is not specifically limited, and may be set according to an engineer's engineering experience, or may be set according to an optimal threshold obtained by a limited number of experiments, or may be obtained according to a limited number of computer simulations. Good threshold settings.

Step S404, the identifier information carried in the Sync message and the time synchronization information are fed back to the second synchronization device.

Optionally, the step S404 includes: feeding back the identifier information carried in the Sync packet and the time synchronization information to the second synchronization device, so that the second synchronization device confirms that the Sync message is received according to the identifier information. When the followup packet is received, the time synchronization information is set in the Followup message.

The method for generating a synchronization message according to the fourth embodiment of the present invention enables the network communication device to carry time synchronization information in the Followup message according to the two-step PTP protocol standard, so as to implement the two-step PTP protocol of the network communication device. The standard time synchronization makes a wide range of network communication equipment suitable for the two-step PTP protocol standard; it simplifies the control plane selection, reduces the complexity of the control plane implementation, and simplifies the control plane design flow.

A fifth embodiment of the present invention, a device for generating a synchronous message, as shown in FIG. 4, includes the following components:

The setting module 101 is configured to: when receiving the Sync message, set the identification information of the Sync message in the Sync message, and send the Sync message to the first synchronization device.

Optionally, the setting module 101 is configured to: when receiving the Sync message, obtain the identification information of the Sync message; set the identification information of the Sync message in the Sync message, and carry the Sync of the identifier information. The message is sent to the first synchronization device, so that the first synchronization device feeds back the identifier information carried in the Sync message based on the received Sync message.

The receiving module 102 is configured to receive the identifier information that is fed back by the first synchronization device and time synchronization information corresponding to the Sync packet.

The synchronization module 103 is configured to set time synchronization information in the Followup message when it is confirmed that the Followup message corresponding to the Sync message is received based on the identifier information.

The apparatus for generating a synchronization message according to the fifth embodiment of the present invention enables the network communication device to carry time synchronization information in the Followup message according to the two-step PTP protocol standard, so as to implement the two-step PTP protocol of the network communication device. The standard time synchronization makes a wide range of network communication equipment suitable for the two-step PTP protocol standard; it simplifies the control plane selection, reduces the complexity of the control plane implementation, and simplifies the control plane design flow.

According to a sixth embodiment of the present invention, a device for generating a synchronous message, as shown in FIG. 4, includes the following components:

The apparatus for generating a synchronization message according to the sixth embodiment of the present invention enables the network communication device to carry time synchronization information in the Followup message according to the two-step PTP protocol standard, so as to implement the two-step PTP protocol of the network communication device. The standard time synchronization makes a wide range of network communication equipment suitable for the two-step PTP protocol standard; it simplifies the control plane selection, reduces the complexity of the control plane implementation, and simplifies the control plane design flow.

A seventh embodiment of the present invention, a device for generating a synchronous message, as shown in FIG. 5, includes the following components:

The sending module 201 is configured to: when receiving the Sync message sent by the second synchronization device, send the Sync message to the next communication node.

The obtaining module 202 is configured to obtain time synchronization information corresponding to the Sync message according to the sending time of the Sync message sent by the next communication node.

Optionally, the obtaining module 202 is configured to: determine whether the Sync message received by the second synchronization device is sent by the control plane, or is sent by the previous communication node; and if the Sync message received by the second synchronization device is determined If the text is sent by the control plane, the time synchronization information is set to send the sending time of the Sync message to the next communication node; if it is determined that the Sync message received by the second synchronization device is sent by the previous communication node, The time synchronization information is set to a synchronization time difference; wherein, the synchronization time difference is a difference between a transmission time of the Sync message sent by the next communication node and a reception time of the Sync message received by the second synchronization device.

The first feedback module 203 is configured to feed back the identification information carried in the Sync message and the time synchronization information to the second synchronization device.

Optionally, the first feedback module 203 is configured to: feed back the identifier information carried in the Sync packet, and the time synchronization information to the second synchronization device, so that the second synchronization device confirms receiving the identifier based on the identifier information. When the Sync message corresponds to the Followup message, the time synchronization information is set in the Followup message.

The device for generating a synchronization message according to the seventh embodiment of the present invention enables the network communication device to carry time synchronization information in the Followup message according to the two-step PTP protocol standard, so as to implement the two-step PTP protocol of the network communication device. The standard time synchronization makes a wide range of network communication equipment suitable for the two-step PTP protocol standard; it simplifies the control plane selection, reduces the complexity of the control plane implementation, and simplifies the control plane design flow.

According to the eighth embodiment of the present invention, a device for generating a synchronous message, as shown in FIG. 6, includes the following components:

Optionally, the device for generating the synchronization message further includes: a buffering module 204, configured to cache the next received Sync message when the number of received Sync messages is greater than the first set threshold.

Optionally, the obtaining module 202 is configured to: determine whether the Sync message received by the second synchronization device is sent by the control plane, or is sent by the previous communication node; and if the Sync message received by the second synchronization device is determined If the text is sent by the control plane, the time synchronization information is set to send the sending time of the Sync message to the next communication node; if it is determined that the Sync message received by the second synchronization device is sent by the previous communication node, Then, the time synchronization information is set as the synchronization time difference; wherein, the synchronization time difference is the difference between the transmission time of the Sync message sent by the next communication node and the reception time of the Sync message received by the second synchronization device.

The second feedback module 205 is configured to feed back the Followup message to the second synchronization device when receiving the Followup message sent by the second synchronization device.

Optionally, the device for generating a synchronization message further includes: a termination module 206, configured to stop feeding back the Followup message to the time when the number of times the Followup message is fed back to the second synchronization device is greater than a second threshold Second synchronization device.

The apparatus for generating a synchronization message according to the eighth embodiment of the present invention enables the network communication device to carry time synchronization information in the Followup message according to the two-step PTP protocol standard, so as to implement the two-step PTP protocol of the network communication device. The standard time synchronization makes a wide range of network communication equipment suitable for the two-step PTP protocol standard; it simplifies the control plane selection, reduces the complexity of the control plane implementation, and simplifies the control plane design flow.

A ninth embodiment of the present invention, a system for generating a synchronous message, as shown in FIG. 7, includes the following components:

The second synchronization device 301 is configured to: when the synchronization Sync message is received, set the identification information of the Sync message in the Sync message, and send the Sync message to the first synchronization device 302.

The first synchronization device 302 is configured to: when the Sync message is received, send the Sync message to the next communication node; and according to the sending time of the Sync message sent by the next communication node, obtain the corresponding Sync message Time synchronization information; the identification information carried in the Sync message and the time synchronization information are fed back to the second synchronization device 301.

Optionally, the manner of obtaining the time synchronization information corresponding to the Sync message according to the sending time of the Sync message sent by the next communication node, including but not limited to: determining that the Sync message received by the second synchronization device 301 is The control layer sends the message sent by the previous communication node; if it is determined that the Sync message received by the second synchronization device 301 is sent by the control plane, the time synchronization information is set to be sent by the first synchronization device 302 to the next communication node. The sending time of the Sync message; if it is determined that the Sync message received by the second synchronization device is sent by the previous communication node, the time synchronization information is set as the synchronization time difference; wherein, the synchronization time difference is the first synchronization device 302. The sending time of the Sync message sent by the communication node is different from the receiving time of the Sync message received by the second synchronization device 301.

The second synchronization device 301 is further configured to set time synchronization information in the Followup message when it is confirmed that the Followup message corresponding to the Sync message is received based on the identifier information.

The synchronization message generation system according to the ninth embodiment of the present invention enables the network communication device to carry time synchronization information in the Followup message according to the two-step PTP protocol standard, so as to implement the two-step PTP protocol of the network communication device. The standard time synchronization makes a wide range of network communication equipment suitable for the two-step PTP protocol standard; it simplifies the control plane selection, reduces the complexity of the control plane implementation, and simplifies the control plane design flow.

A tenth embodiment of the present invention, a system for generating a synchronous message, as shown in FIG. 7, includes the following components:

The second synchronization device 301 is further configured to: when the acknowledgment of the Followup message corresponding to the Sync message is received, the time synchronization information is set in the Followup message.

Optionally, the second synchronization device 301 is further configured to send the Followup message to the first synchronization, if the time synchronization information is not received, after receiving the Followup message corresponding to the Sync message based on the identifier information. Device 302;

The first synchronization device 302 is further configured to: when receiving the Followup message sent by the second synchronization device 301, feed the Followup message to the second synchronization device 301;

The second synchronization device 301 is further configured to: when receiving the Followup message and the time synchronization information fed back by the first synchronization device 302, set time synchronization information in the Followup message, and stop sending the Followup message to the first synchronization device. 302.

Optionally, the first synchronization device 302 is further configured to cache the next received Sync message when the number of received Sync messages is greater than the first set threshold.

Optionally, the first synchronization device 302 is further configured to stop feeding the Followup message to the second synchronization device 301 when the number of times the Followup message is fed back to the second synchronization device 301 is greater than the second set threshold.

The system for generating a synchronization message according to the tenth embodiment of the present invention enables the network communication device to carry time synchronization information in the Followup message according to the two-step PTP protocol standard, so as to implement the two-step PTP protocol of the network communication device. The standard time synchronization makes a wide range of network communication equipment suitable for the two-step PTP protocol standard; it simplifies the control plane selection, reduces the complexity of the control plane implementation, and simplifies the control plane design flow.

In an eleventh embodiment of the present invention, a synchronization device, as shown in FIG. 8, includes the following components: a processor 501 and a memory 502. In some embodiments of the invention, processor 501 and memory 502 may be connected by a bus or other means.

The processor 501 may be a general-purpose processor, such as a central processing unit (CPU), or may be a digital signal processor (DSP) or an application specific integrated circuit (ASIC). Or one or more integrated circuits configured to implement embodiments of the present invention. The memory 502 is configured to store executable instructions of the processor 501;

The memory 502 is configured to store the program code and transmit the program code to the processor 501. The memory 502 may include a volatile memory (Volatile Memory), such as a random access memory (RAM); the memory 502 may also include a non-volatile memory (Non-Volatile Memory), such as a read-only memory (Read- Only Memory, ROM), Flash Memory, Hard Disk Drive (HDD), or Solid-State Drive (SSD); the memory 502 may also include a combination of the above types of memories.

The processor 501 is configured to invoke the program code management code stored in the memory 502 to perform some or all of the steps from the first embodiment of the present invention to the second embodiment of the present invention.

In this embodiment, the synchronization device can be disposed in any of the network communication devices.

The synchronization device of the eleventh embodiment of the present invention enables the network communication device to carry time synchronization information in the Followup message according to the two-step PTP protocol standard, so as to implement the time for the network communication device to perform the PTP protocol based on the two-step method. Synchronization enables a wide range of network communication equipment to be applied to the two-step PTP protocol standard; it simplifies the control plane selection, reduces the complexity of the control plane implementation, and simplifies the control plane design flow.

According to a twelfth embodiment of the present invention, a synchronization device, as shown in FIG. 9, includes the following components: a processor 601 and a memory 602. In some embodiments of the invention, processor 601 and memory 602 may be connected by a bus or other means.

The processor 601 may be a general-purpose processor, such as a central processing unit (CPU), or may be a digital signal processor (DSP) or an application specific integrated circuit (ASIC). Or one or more integrated circuits configured to implement embodiments of the present invention. The memory 602 is configured to store executable instructions of the processor 601;

The memory 602 is configured to store the program code and transmit the program code to the processor 601. The memory 602 may include a volatile memory (Volatile Memory), such as a random access memory (RAM); the memory 602 may also include a non-volatile memory (Non-Volatile Memory), such as a read-only memory (Read- Only Memory, ROM), Flash Memory, Hard Disk Drive (HDD), or Solid-State Drive (SSD); the memory 602 may also include a combination of the above types of memories.

The processor 601 is configured to invoke the program code management code stored in the memory 602 to perform some or all of the steps from the third embodiment of the present invention to the fourth embodiment of the present invention.

The synchronization device according to the twelfth embodiment of the present invention enables the network communication device to carry the time synchronization information in the Followup message according to the two-step PTP protocol standard, so as to implement the time for the network communication device to perform the PTP protocol based on the two-step method. Synchronization enables a wide range of network communication equipment to be applied to the two-step PTP protocol standard; it simplifies the control plane selection, reduces the complexity of the control plane implementation, and simplifies the control plane design flow.

A thirteenth embodiment of the present invention is a computer readable storage medium.

The computer storage medium can be RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, mobile hard disk, CD-ROM, or any other form of storage medium known in the art.

The computer readable storage medium stores one or more programs, which may be executed by one or more processors to implement any one of the first embodiment of the present invention to the second embodiment of the present invention. Part or all of the steps, and/or to implement some or all of the steps of any one of the third embodiment of the present invention to the fourth embodiment of the present invention.

A computer readable storage medium according to the thirteenth embodiment of the present invention, storing one or more programs, the one or more programs being executable by one or more processors, enabling the network communication device to follow the two-step method The PTP protocol standard carries time synchronization information in the Followup message to implement time synchronization of the network communication device based on the two-step PTP protocol standard, so that a wide range of network communication devices are applicable to the two-step PTP protocol standard; the control plane selection is simplified. The type reduces the complexity of the control surface implementation and simplifies the design flow of the control surface.

It is to be understood that the term "comprises", "comprising", or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes those elements. It also includes other elements that are not explicitly listed, or elements that are inherent to such a process, method, article, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better. Implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal (which may be a cell phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative and not restrictive, and those skilled in the art In the light of the present invention, many forms may be made without departing from the spirit and scope of the invention as claimed.

Claims

A method for generating a synchronous message, comprising:

When the synchronous Sync message is received, the identification information of the Sync message is set in the Sync message, and the Sync message is sent to the first synchronization device;

Receiving, by the first synchronization device, the identifier information and time synchronization information corresponding to the Sync packet;

When it is confirmed that the Followup message corresponding to the Sync message is received based on the identifier information, the time synchronization information is set in the Followup message.
The method of claim 1, wherein the setting the time synchronization information in the Followup message comprises:

Sending the Followup message to the first synchronization device if the time synchronization information is not received;

When the Followup message and the time synchronization information fed back by the first synchronization device are received, the time synchronization information is set in the Followup message, and the sending of the Followup message to the First sync device.
The method according to any one of claims 1 to 2, wherein, in the case of receiving the Sync message sent by the control plane, the time synchronization information comprises: the first synchronization device communicating to the next communication The sending time of the Sync message sent by the node.
The method according to any one of claims 1 to 2, wherein, in the case of receiving the Sync message sent by the last communication node, the time synchronization information comprises: a synchronization time difference; wherein the synchronization The time difference is the difference between the sending time of the Sync message sent by the first synchronization device to the next communication node and the receiving time of receiving the Sync message.
A method for generating a synchronous message, comprising:

When receiving the Sync message sent by the second synchronization device, sending the Sync message to the next communication node;

Obtaining time synchronization information corresponding to the Sync message according to the sending time of the Sync message sent by the next communication node;

And sending the identifier information carried in the Sync message and the time synchronization information to the second synchronization device.
The method of claim 5, wherein before the sending the identification information carried in the Sync message and the time synchronization information to the second synchronization device, the method further comprises:

When the Followup message sent by the second synchronization device is received, the Followup message is fed back to the second synchronization device.
The method according to claim 5 or 6, wherein the obtaining the time synchronization information corresponding to the Sync message according to the sending time of the Sync message sent by the next communication node comprises:

Determining whether the Sync message received by the second synchronization device is sent by a control plane or sent by a previous communication node;

If it is determined that the Sync message received by the second synchronization device is sent by the control plane, setting the time synchronization information to send the sending time of the Sync message to the next communication node;

If it is determined that the Sync message received by the second synchronization device is sent by the previous communication node, setting the time synchronization information to a synchronization time difference; wherein the synchronization time difference is to the next communication node And sending, by the second synchronization device, a difference between a sending time of the Sync message and a receiving time of the Sync message.
A second synchronization device, wherein the second synchronization device comprises a processor and a memory;

The processor is configured to execute a program for generating a synchronization message stored in a memory to implement the steps of the method for generating a synchronization message according to any one of claims 1 to 4.
A first synchronization device, wherein the first synchronization device comprises a processor and a memory;

The processor is configured to execute a program for generating a synchronization message stored in the memory to implement the steps of the method for generating a synchronization message according to any one of claims 5-7.
A computer readable storage medium, wherein the computer readable storage medium stores one or more programs, the one or more programs executable by one or more processors to implement according to claims 1-4 The steps of the method for generating a synchronization message according to any one of the preceding claims, and/or the steps of the method for generating a synchronization message according to any one of claims 5 to 7.