CN108259105B

CN108259105B - time synchronization processing method and device and synchronization network

Info

Publication number: CN108259105B
Application number: CN201611234476.7A
Authority: CN
Inventors: 韩柳燕
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2016-12-28
Filing date: 2016-12-28
Publication date: 2019-12-13
Anticipated expiration: 2036-12-28
Also published as: CN108259105A

Abstract

the invention provides a time synchronization processing method, a device and a synchronization network, wherein the method is applied to a first network equipment node in the synchronization network for synchronization based on first time, and comprises the following steps: acquiring a second time of at least one time reference source; calculating difference information of a second time of the at least one time reference source and the first time; and sending the difference information to other network equipment nodes of the synchronous network. Each network equipment node in the synchronous network can calculate the second time of the time reference source according to the difference information transmitted by the first network equipment node and the first time used by the synchronous network, so that different time transmission schemes are realized in a set of clock synchronous system, and the problem of transmitting different time references in one synchronous network is solved.

Description

Time synchronization processing method and device and synchronization network

Technical Field

the present invention relates to the field of internet technologies, and in particular, to a time synchronization processing method, apparatus, and synchronization network.

background

in the prior art, different applications may require different time synchronization networks to transmit time signals of different references. Such as the log reporting and alarm Time of WAP, sms, mms, BOSS, various gateways, intelligent networks, Network management systems, signaling devices, transmission devices, data devices, etc. in mobile communication systems, NTP (Network Time Protocol) Network protocols are used. In addition, in order to meet the synchronization requirement of the base station in the mobile communication system such as TD-SCDMA/TD-LTE, PTP (picture transfer Protocol) Protocol is used as the base station to transmit the time information.

in addition, time synchronization is classified into absolute time synchronization and relative time synchronization. Absolute time synchronization requires that the absolute time of each node in the network track a certain time scale, such as UTC (universal coordinated time). Relative time synchronization refers to keeping synchronization between nodes in the network, and is not necessarily synchronous with a certain absolute time mark.

In synchronization applications, some applications require absolute time synchronization, such as billing, financial transactions, etc., and some applications require only relative time synchronization between nodes, such as inter-base station Carrier Aggregation (CA) services, requiring synchronization errors between two base stations providing carrier aggregation of no more than a few hundred nanoseconds.

therefore, what synchronization requirements need to be solved when the time synchronization network is established needs to be considered, and the time synchronization network needs to be separately and independently deployed for different requirements. The following problems will arise in the network due to the need for independent deployment:

first, for network devices connecting different applications, multiple time protocols and processes need to be supported simultaneously. Each network device must support at least two independent sets of time synchronization processing systems, including the support of software and hardware, so that the support cost of the network device is high.

secondly, as shown in fig. 1, for the shared network, it is difficult for the co-established shared network to transmit different times to different operators, as shown in the figure, the operators a/B/C share the middle transmission network for the downstream base station backhaul, and for the conventional transmission device, only one set of system clock is provided, and assuming that the middle transmission network tracks the time server of the operator a, since the internal system time of the middle node follows the time synchronized with the operator a, the time provided by the time servers of the operators B and C cannot be transmitted again in the same network, so that the co-established shared network cannot transmit different times.

third, some applications may align nodes with each other in a small-scale network to achieve relative time synchronization, since only relative time synchronization between the nodes is required. At this time, the small-range network has a deviation from the external absolute time reference, but since the nodes are synchronized with each other and cannot be synchronized with the external absolute time reference, the small-range network cannot provide services for other applications requiring the absolute time reference.

in summary, a synchronous network is expected to serve various applications, some applications may require different time references, some applications require relative time, and some applications require absolute time, so how to transmit different time references in a synchronous network becomes an urgent technical problem to be solved.

Disclosure of Invention

the embodiment of the invention provides a time synchronization processing method, a time synchronization processing device and a synchronization network, and aims to solve the problem of transmitting different time references in one synchronization network.

In a first aspect, an embodiment of the present invention provides a time synchronization processing method, applied to a first network device node in a synchronization network that performs synchronization based on first time, including:

Acquiring a second time of at least one time reference source;

calculating difference information of a second time of the at least one time reference source and the first time;

and sending the difference information to other network equipment nodes of the synchronous network.

In a second aspect, an embodiment of the present invention further provides a time synchronization processing method, applied to a second network device node in a synchronization network that performs synchronization based on a first time, including:

receiving difference information; the difference information records a time difference between the first time and a second time of at least one time reference source;

and calculating to obtain a second time of the at least one time reference source according to the received difference information and the first time.

In a third aspect, an embodiment of the present invention further provides a time synchronization processing method, applied to a second network device node in a synchronization network that performs synchronization based on a first time, where the method includes:

And forwarding the difference information.

In a fourth aspect, an embodiment of the present invention further provides a time synchronization processing method, which is applied to a synchronization network that performs synchronization based on first time, where the time synchronization processing method includes:

A first network equipment node in the synchronous network acquires second time of at least one time reference source;

the first network equipment node calculates difference information of a second time of the at least one time reference source and the first time;

The first network equipment node sends the difference information to other network equipment nodes of the synchronous network;

and the other network equipment nodes receive the difference information, forward the difference information and/or calculate and obtain the second time according to the received difference information and the first time.

in a fifth aspect, an embodiment of the present invention further provides a time synchronization processing apparatus, which is applied to a first network device node in a synchronization network that performs synchronization based on a first time, and includes:

the acquisition module is used for acquiring second time of at least one time reference source;

The first calculation module is used for calculating difference value information of a second time of the at least one time reference source and the first time;

and the difference information sending module is used for sending the difference information to other network equipment nodes of the synchronous network.

in a sixth aspect, an embodiment of the present invention further provides a time synchronization processing apparatus, which is applied to a second network device node in a synchronization network that performs synchronization based on a first time, and includes:

The first receiving module is used for receiving the difference information; the difference information records a time difference between the first time and a second time of at least one time reference source;

And the second calculation module is used for calculating and obtaining the second time of the at least one time reference source according to the received difference information and the first time.

In a seventh aspect, an embodiment of the present invention further provides a time synchronization processing apparatus, which is applied to a second network device node in a synchronization network that performs synchronization based on a first time, and includes:

the second receiving module is used for receiving the difference value information; the difference information records a time difference between the first time and a second time of at least one time reference source;

And the second forwarding module is used for forwarding the difference information.

in an eighth aspect, an embodiment of the present invention further provides a synchronization network, where the synchronization network is based on first time synchronization, the synchronization network includes a first network device node and a second network device node, and the first network device node includes:

A difference information sending module, configured to send the difference information to the second network device node;

the second network device node comprises:

the first receiving module is used for receiving the difference information;

and the difference value processing module is used for forwarding the difference value information and/or calculating and obtaining the second time according to the received difference value information and the first time.

Thus, in the embodiment of the present invention, the second time of at least one time reference source is obtained; calculating difference information of a second time of the at least one time reference source and the first time; and sending the difference information to other network equipment nodes of the synchronous network. Each network equipment node in the synchronous network can calculate the second time of the time reference source according to the difference information transmitted by the first network equipment node and the first time used by the synchronous network, so that different time transmission schemes are realized in a set of clock synchronous system, and the problem of transmitting different time references in one synchronous network is solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a diagram of a shared network transport architecture;

fig. 2 is a flowchart of a time synchronization processing method according to a first embodiment of the present invention;

fig. 3 is a flowchart of a time synchronization processing method according to a second embodiment of the present invention;

fig. 4 is a flowchart of a time synchronization processing method according to a third embodiment of the present invention;

Fig. 5 is a schematic diagram of a clock processing flow of a second network device node in the time synchronization processing method according to the embodiment of the present invention;

Fig. 6 is a flowchart of a time synchronization processing method according to a fourth embodiment of the present invention;

fig. 7 is a flowchart of a time synchronization processing method according to a fifth embodiment of the present invention;

Fig. 8 is a second flowchart of a time synchronization processing method according to a fifth embodiment of the present invention;

fig. 9 is a flowchart of a time synchronization processing method according to a sixth embodiment of the present invention;

Fig. 10 is a flowchart of a time synchronization processing method according to a seventh embodiment of the present invention;

fig. 11 is a flowchart of a time synchronization processing method according to an eighth embodiment of the present invention;

fig. 12 is a flowchart of a time synchronization processing method according to a ninth embodiment of the present invention;

fig. 13 is a configuration diagram of a time synchronization processing apparatus according to a tenth embodiment of the present invention;

Fig. 14 is a structural diagram of a time synchronization processing apparatus according to an eleventh embodiment of the present invention;

Fig. 15 is a configuration diagram of a time synchronization processing apparatus according to a twelfth embodiment of the present invention;

fig. 16 is a structural diagram of a synchronous network according to a thirteenth embodiment of the present invention.

Detailed Description

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

first embodiment

When the time synchronization processing method provided by the first embodiment of the present invention is applied to a first network device node in a synchronization network that performs synchronization based on first time, referring to fig. 2, the time synchronization processing method includes the following steps:

step 201, a second time of at least one time reference source is obtained.

The first network equipment node provided by the embodiment of the invention is mainly applied to a synchronous network for carrying out synchronization based on first time, and the first network equipment node is a network equipment node capable of acquiring a time reference source. Specifically, the synchronization network may include a plurality of network device nodes, and in the synchronization network, the time of one time reference source may be acquired as the first time to perform time synchronization, or the time synchronization may be performed according to the first time calculated by the time reference source, or the time calculation may be performed by the plurality of network device nodes according to their own time to obtain the first time, so as to perform time synchronization, which is not further limited herein. In the synchronous network, at least one network device node may obtain corresponding times of more than one time reference source, thereby obtaining the second time.

It can be understood that the times corresponding to the plurality of time reference sources are different, and the number and the time of the time reference sources are not further described herein. In this embodiment, the network device node that can acquire the second time of the time reference source is collectively referred to as a first network device node. That is, one or more first network device nodes may be present in a synchronous network. For example, in the same synchronous network, a first network device node may be set to acquire the second times of the plurality of time reference sources.

specifically, the first network device node may be directly connected to the time reference source or may be connected to the time reference source through one or more intermediate network device nodes, as long as the second time of the time reference source can be obtained. For example, one network system includes two synchronous networks, where after acquiring the second time of the time reference source, the network device node in the first synchronous network may output the second time of the time reference source to the first network device node in the second synchronous network.

step 202, calculating difference information between the second time and the first time of the at least one time reference source.

in this step, the number of the time reference sources may be multiple, and the difference information includes a difference between the second time and the first time of each time reference source. Specifically, when the second time of the time reference source is acquired, the second time of the currently acquired time reference source is compared with the first time, and difference information of the second time relative to the first time is determined.

step 203, sending the difference information to other network device nodes of the synchronous network.

In this step, the manner of sending the difference information may be set according to actual needs, for example, the difference information corresponding to each time reference source may be sent one by one, or all the difference information may be sent in a packet. Further, the transmission path may be provided for transmission, or the transmission may be performed by a diffusion method. Meanwhile, the difference information of the same time reference source may be sent once, may be sent periodically (to update the difference information), and may also be sent as needed (for example, sent when a sending condition is met, where the sending condition may include receiving a request message of a downstream network device node).

In this embodiment, the other network device nodes are network device nodes other than the first network device node. After receiving the difference information, the other network device nodes may calculate a second time of the time reference source according to the first time used by the other network device nodes and the received difference information, and then may output the second time, thereby implementing transmission of the second time.

as shown in fig. 3, a time synchronization processing method according to a second embodiment of the present invention includes:

Step 201, acquiring a second time of at least one time reference source;

step 202, calculating difference information between a second time of the at least one time reference source and the first time;

And step 204, sending currently acquired difference information corresponding to the second time of the at least one time reference source to other network device nodes of the synchronous network every preset time period or when a sending condition is met.

in the time synchronization processing method according to the second embodiment of the present invention, the transmission of the difference information is periodically transmitted. For example, when the preset cycle time is reached, the second time of the time reference source is first acquired, then the difference information corresponding to the time reference source is determined again by comparing the currently acquired second time with the current first time, and then the difference information is sent to other network device nodes of the synchronous network. In this embodiment, the difference information is updated, so that the accuracy of the second time acquired by other network device nodes of the synchronous network can be improved. Further, optimization processing may be performed according to the obtained second time of the time reference source, for example, other network device nodes may perform weighted average calculation on the difference information corresponding to the same time reference source received multiple times to obtain a corresponding weighted average value, and then calculate the weighted average value and the first time to obtain the second time of the time reference source; in addition, the first network node may perform weighted average calculation according to difference information obtained by comparing the second time and the first time of the same time reference source obtained multiple times to obtain a corresponding weighted average value, and then send the weighted average value to other network device nodes as difference information to be sent.

it can be understood that the above manner of outputting the difference information may be set according to actual needs, for example, the difference information may be periodically and actively output by the first network device node, or the difference information may be output when a request of a downstream device is received.

It should be noted that, in other embodiments, in order to ensure that each network device node can receive the difference information corresponding to the time reference source, the same difference information may also be controlled to be sent periodically, so as to avoid that the network device node on line after sending the difference information for the first time cannot obtain the difference information. In addition, the network device node that comes online after the difference information is sent for the first time may also send a request to actively acquire the difference information after coming online.

Further, a manner of sending the difference information may be set as needed, and in a first scheme of this embodiment, the step 204 includes:

generating a time difference information message according to currently acquired difference information corresponding to the second time of the at least one time reference source and the identity information of the time reference source;

and sending the time difference information message to other network equipment nodes of the synchronous network.

In a second aspect of this embodiment, the step 204 includes:

according to the currently acquired difference value information corresponding to the second time of the at least one time reference source and the serial number used for identifying the message sending times;

Sending the time difference information message to other network equipment nodes of the synchronous network; and the other network equipment nodes determine the sequence of the time difference value information messages according to the sequence numbers.

specifically, each time difference information packet may include difference information corresponding to one time reference source, or may include difference information corresponding to all time reference sources. In this embodiment, the difference information is sent in a message manner, and the sequence number is set in the time difference information message, so that the sequence of each received difference information can be determined according to the sequence number. Whether the difference information is missed can be determined according to the sequence, so that loss detection of the difference information is realized. Specifically, it may be detected whether difference information of multiple time reference sources sent at the same time is lost, or whether difference information of multiple time reference sources sent at the same time is lost.

It should be understood that, in order to identify the device information for sending the time difference information packet, the time difference information packet may further include identification information of the first network device node, such as a device ID.

a time synchronization processing method provided in a third embodiment of the present invention is applied to a second network device node in a synchronization network that performs synchronization based on a first time, and referring to fig. 4, the time synchronization processing method includes the following steps:

step 401, receiving difference information; the difference information records a time difference between the first time and a second time of at least one time reference source;

step 402, calculating a second time of the at least one time reference source according to the received difference information and the first time.

In this embodiment of the present invention, the difference information may be difference information sent by the first network device node, or may be time information sent by an intermediate network device node between the first network device node and the second network device node, where the intermediate network device node may be the second network device node, or may be a network device node only used for forwarding the difference information. The first network device node may obtain the second time and the first time of the time reference source, and perform comparison calculation to obtain difference information corresponding to the time reference source. And then the difference information is directly or indirectly sent to a second network equipment node, after receiving the difference information, the second network equipment node can calculate to obtain the second time of the time reference source according to the first time of the second network equipment node and the received difference information, and then the second time can be output, so that the transmission of the second time of the time reference source in the same synchronous network is realized.

In this embodiment, as shown in fig. 5, the clock processing flow of the second network device node includes a first flow of processing the first time synchronization according to the existing scheme and a second flow of processing the time reference source according to the present scheme, where the first processing flow includes: the main time source processing and the system clock, and the second processing flow comprises: and receiving the difference information, forwarding the difference information or calculating to obtain a second time of the time reference source and providing the second time to downstream equipment.

in the embodiment of the invention, difference value information is received; the difference information records a time difference between the first time and a second time of at least one time reference source; and calculating to obtain a second time of the at least one time reference source according to the received difference information and the first time. In the second network equipment node which can not directly acquire the second time of the time reference source, the second time of the time reference source is calculated according to the difference information after the difference information between the second time and the first time of the time reference source is acquired, so that all the second network equipment nodes in the same synchronous network can acquire the second time of the time reference source, and the problem of transmitting different time references in the same synchronous network is solved.

as shown in fig. 6, a time synchronization processing method according to a fourth embodiment of the present invention includes:

step 402, calculating a second time of the at least one time reference source according to the received difference information and the first time;

Step 403, outputting the second time of the at least one time reference source to a downstream device accessing the second network device node.

In this embodiment, after the second time of the time reference source is obtained through calculation, the second time of the time reference source may be output to a downstream device of the second network device node. Specifically, the downstream network device may be a first network device node in another synchronous network (i.e. a downstream transmission device for transmitting the second time of the time reference source), or may be an application device (e.g. a charging device, a user equipment, etc.).

it can be understood that the manner of outputting the second time may be set according to actual needs, for example, the second time may be output actively by the second network device node, or when a request of the downstream device is received, the second time of the time reference source is obtained by calculation, and finally the second time is output.

it should be noted that, in the same synchronous network, there may be one or more second network device nodes, and the calculation and output of the second time of the time reference source for each second network device node may be performed synchronously or asynchronously, which is specifically described in detail below:

As shown in fig. 7, a first scheme of a time synchronization processing method according to a fifth embodiment of the present invention includes:

step 4021, when the difference information is received, calculating and obtaining a second time of the at least one time reference source according to the received difference information and the first time.

As shown in fig. 8, a second scheme of a time synchronization processing method according to a fifth embodiment of the present invention includes:

Step 4022, when the first time reaches a preset time point, calculating and obtaining a second time of the at least one time reference source according to the received difference information and the first time.

In this embodiment, the output adjustment manner for the second time in each second network device node may adopt the first scheme or the second scheme, and may be specifically set according to actual needs. In the first scheme, after receiving the difference information, each second network device node may perform calculation and output; in the second scheme, after receiving the difference information, each second network device node may perform calculation and output at the same time according to the appointed time. The term "capable of performing calculation and output" in this embodiment means that the currently received difference information may be used as a criterion for calculating the second time of the time reference source. The following will be described in detail by taking the example of periodically receiving the difference information corresponding to the same time reference source:

For example, after the second network device node receives the first difference information for the first time, if a second time request of the downstream device for the time reference source is received, the second network device node calculates, with the first difference information and the first time, to obtain a second time of the time reference source as an output of the second time request message. After the second network device node receives the second difference information for the second time:

If the first scheme is adopted, when a second time request of the downstream equipment is received, the second network equipment node calculates the second time of the time reference source by using the second difference information and the first time to obtain the output of the second time request message;

If the second scheme is adopted, before the preset time point arrives, when a second time request of the downstream device for the time reference source is received, the second network device node calculates the second time of the time reference source by using the first difference information and the first time as the output of the second time request message. After the preset time point arrives, the second network device node calculates, according to the second difference information and the first time, a second time of the time reference source as an output of the second time request message.

in the embodiment of the invention, the second time of the time reference source of each second network equipment node can be synchronously calculated and output, or asynchronously calculated and output, so that the flexibility of controlling the second time is improved.

as shown in fig. 9, a time synchronization processing method according to a sixth embodiment of the present invention includes:

Step 401, receiving a time difference information message, wherein the time difference information message comprises difference information and a sequence number used for identifying the sending times of the message; the difference information records a time difference between the first time and a second time of at least one time reference source;

step 404, judging whether difference information is received according to the serial number; if yes, go to step 402, if no, go to step 405;

Step 405, sending a request message for resending the difference information to an upstream network device node;

the upstream network device node is a first network device node that acquires a second time of the at least one time reference source, or the upstream network device node is an intermediate network device node that transmits the difference information from the first network device node to the second network device node.

in this embodiment, when receiving the difference information, it is determined whether the difference information can be received within a preset time period, and if the difference information cannot be received, a request message is sent to an upstream network device node to request the upstream network device node to resend the difference information.

specifically, when the difference information is transmitted once, it is detected whether the difference information is received according to a preset time point. And when the difference information is transmitted as periodic information, detecting whether the difference information is received or not according to preset periodic time. Further, the difference information may be sent by using a time difference information packet, where the time difference information packet includes a serial number, and whether to receive an updated time difference information packet may be determined according to the serial number. When the second network device node does not acquire the difference information, the request message may be sent to the first network device node, or the request message may be sent to any intermediate network node in a network transmission path from the first network device node to the second network device node.

As shown in fig. 10, a time synchronization processing method according to a seventh embodiment of the present invention includes:

Step 406, forwarding the difference information.

In this embodiment, the forwarding the difference information includes: when a port of the second network equipment receives the difference value information, determining a forwarding port of the second network equipment according to a pre-configured transmission path; and forwarding the difference information to the forwarding port, and forwarding to other network equipment nodes of the synchronous network through the forwarding port.

the forwarding the difference information includes: and when one port of the second network equipment receives the difference information, forwarding the difference information to other ports which do not receive the same difference information, and forwarding the difference information to a neighbor network equipment node. Specifically, the second network device node includes a plurality of ports, and when one of the network ports (hereinafter, referred to as a receiving port) receives the difference information, in the process of preparing for forwarding, if the other ports except the receiving port have received the same difference information, the port that received the same difference information is not forwarded. If no other port can transmit the message or other ports all receive the same difference information, the second network equipment node does not forward the message any more.

That is, in this embodiment, the second network device may be used for forwarding the difference information, may also be used for calculating the second time, and may also be used for forwarding the second time. In forwarding, the difference information or the second time corresponding to a plurality of time reference sources may be forwarded, or the difference information or the second time of one time reference source may also be forwarded. In calculating the second time, the second time may be calculated by a plurality of time reference sources, or may be calculated by one time reference source. It should be understood that, when the second network device is the last network device node in the transmission path, the received difference information may not be forwarded.

a time synchronization processing method provided in an eighth embodiment of the present invention is applied to a second network device node in a synchronization network that performs synchronization based on a first time, and referring to fig. 11, the time synchronization processing method includes the following steps:

step 1101, receiving difference information; the difference information records a time difference between the first time and a second time of at least one time reference source;

step 1102, forwarding the difference information.

in this embodiment of the present invention, the difference information may be difference information sent by the first network device node, or may be time information sent by an intermediate network device node between the first network device node and the second network device node, where the intermediate network device node may be the second network device node, or may be a network device node only used for forwarding the difference information. The first network device node may obtain the second time and the first time of the time reference source, and perform comparison calculation to obtain difference information corresponding to the time reference source. And then directly or indirectly sending the difference information to a second network equipment node, wherein the second network equipment node can directly forward the difference information to downstream network equipment after receiving the difference information. That is, in this embodiment, the second network device may be used only for forwarding the difference information. In forwarding, the difference information corresponding to a plurality of time reference sources may be forwarded, or only the difference information of one time reference source may be forwarded.

specifically, in this embodiment, the forwarding the difference information includes: when a port of the second network equipment receives the difference value information, determining a forwarding port of the second network equipment according to a pre-configured transmission path; and forwarding the difference information to the forwarding port, and forwarding to other network equipment nodes of the synchronous network through the forwarding port.

the forwarding the difference information includes: and when one port of the second network equipment receives the difference information, forwarding the difference information to other ports which do not receive the same difference information, and forwarding the difference information to a neighbor network equipment node through the forwarding port. Specifically, the second network device node includes a plurality of ports, and when one of the network ports (hereinafter, referred to as a receiving port) receives the difference information, in the process of preparing for forwarding, if the other ports except the receiving port have received the same difference information, the port that received the same difference information is not forwarded.

in the embodiment of the invention, difference value information is received; the difference information records a time difference between the first time and a second time of at least one time reference source; forwarding the difference information according to a pre-configured transmission path; or forwarding the difference information to a network equipment node adjacent to the second network equipment node. In the second network equipment nodes which can not directly acquire the second time of the time reference source, the difference information between the second time and the first time of the time reference source is acquired and then forwarded to each network equipment node according to the difference information, so that the second time of the time reference source can be calculated by each network equipment node, all the second network equipment nodes in the same synchronous network can acquire the second time of the time reference source, and the problem of transmitting different time references in one synchronous network is solved.

a time synchronization processing method according to a ninth embodiment of the present invention is applied to a synchronization network that performs synchronization based on a first time, and referring to fig. 12, the time synchronization processing method includes the following steps:

Step 1201, a first network device node in the synchronous network acquires a second time of at least one time reference source;

step 1202, the first network device node calculating difference information between the second time of the at least one time reference source and the first time;

step 1203, the first network device node sends the difference information to other network device nodes of the synchronous network;

step 1204, the other network device nodes receive the difference information, forward the difference information, and/or calculate to obtain the second time according to the received difference information and the first time.

in this embodiment, the first network device node may obtain second times of one or more time reference sources, may respectively calculate difference information between the second times and the first times of the one or more time reference sources, and then sends the difference information corresponding to the second times of the one or more time reference sources to the second network device node.

When receiving the difference information corresponding to the second time of the multiple time reference sources, the second network device node may perform only forwarding, may perform only calculation of the second time, and may perform calculation of the second time and output of the difference information at the same time. Specifically, when the difference information is forwarded, the difference information corresponding to the second time of one or more time reference sources may be forwarded; in the calculation of the second time, the second time of one or more time reference sources may also be calculated.

In this embodiment, in the second network device node that cannot directly acquire the second time of the time reference source and the other network device nodes of the synchronous network, after the difference information between the second time and the first time of the time reference source is acquired, the second time of the time reference source is calculated according to the difference information, so that all the network device nodes in the same synchronous network can acquire the second time of the time reference source, and thus the problem of transmitting different time references in one synchronous network is solved.

Referring to fig. 13, fig. 13 is a structural diagram of a time synchronization processing apparatus according to a tenth embodiment of the present invention, which can achieve the details of the time synchronization processing methods in the first to second embodiments and achieve the same effects. As shown in fig. 13, the time synchronization processing apparatus 1300, applied to a first network device node in a synchronization network that performs synchronization based on a first time, includes an obtaining module 1301, a first calculating module 1302, and a difference information sending module 1303, where:

An obtaining module 1301, configured to obtain a second time of at least one time reference source;

A first calculating module 1302, configured to calculate difference information between a second time of the at least one time reference source and the first time;

and a difference information sending module 1303, configured to send the difference information to other network device nodes of the synchronous network.

Optionally, the difference information sending module 1303 is specifically configured to: and sending currently acquired difference information corresponding to the second time of the at least one time reference source to other network equipment nodes of the synchronous network at intervals of a preset time period or when a sending condition is met.

Optionally, the difference information sending module 1303 includes:

A first message generating unit, configured to generate, according to difference information corresponding to a second time of the at least one currently acquired time reference source and identity information of the time reference source;

and the first sending unit is used for sending the time difference information message to other network equipment nodes of the synchronous network.

optionally, the difference information sending module 1303 includes:

a second message generating unit, configured to generate a second message according to currently acquired difference information corresponding to a second time of the at least one time reference source and a sequence number used for identifying message sending times;

a second sending unit, configured to send the time difference information packet to other network device nodes of the synchronous network; and the other network equipment nodes determine the sequence of the time difference value information messages according to the sequence numbers.

referring to fig. 14, fig. 14 is a structural diagram of a time synchronization processing apparatus according to an eleventh embodiment of the present invention, which can achieve the details of the time synchronization processing methods in the third to seventh embodiments and achieve the same effects. As shown in fig. 14, the time synchronization processing apparatus 1400, applied in a second network device node in a synchronization network that performs synchronization based on a first time, includes a first receiving module 1401 and a second calculating module 1402, where:

a first receiving module 1401 for receiving the difference information; the difference information records a time difference between the first time and a second time of at least one time reference source;

A second calculating module 1402, configured to calculate a second time of the at least one time reference source according to the received difference information and the first time.

optionally, the apparatus further comprises:

and the output module is used for outputting the second time of the at least one time reference source to downstream equipment accessed to the second network equipment node.

optionally, the second calculating module is specifically configured to: when the difference information is received, calculating and obtaining second time of the at least one time reference source according to the received difference information and the first time; or when the first time reaches a preset time point, calculating and obtaining a second time of the at least one time reference source according to the received difference information and the first time.

Optionally, the first receiving module is specifically configured to: receiving a time difference information message, wherein the time difference information message comprises difference information and a serial number used for identifying the sending times of the message;

the device further comprises:

and the judging module is used for judging whether the difference information is received.

optionally, the apparatus further comprises:

A request sending module, configured to send, when the difference information is not received, a request message for resending the difference information to an upstream network device node;

Optionally, the apparatus further comprises: and the first forwarding module is used for forwarding the difference information.

Optionally, the first forwarding module includes:

a first determining unit, configured to determine, when a port of the second network device receives the difference information, a forwarding port of the second network device according to a pre-configured transmission path;

And the first forwarding unit forwards the difference information to the forwarding port, and forwards the difference information to other network equipment nodes of the synchronous network through the forwarding port.

Optionally, the first forwarding module is specifically configured to: and when one port of the second network equipment receives the difference information, forwarding the difference information to other ports which do not receive the same difference information, and forwarding the difference information to a neighbor network equipment node through the forwarding port.

Referring to fig. 15, fig. 15 is a structural diagram of a time synchronization processing apparatus according to a twelfth embodiment of the present invention, which can achieve the details of the time synchronization processing method according to the eighth embodiment and achieve the same effects. As shown in fig. 15, the time synchronization processing apparatus 1500, applied to a second network device node in a synchronization network that performs synchronization based on a first time, includes a second receiving module 1501 and a second forwarding module 1502, where:

a second receiving module 1501, configured to receive difference information; the difference information records a time difference between the first time and a second time of at least one time reference source;

A second forwarding module 1502 is configured to forward the difference information.

optionally, the second forwarding module includes:

A second determining unit, configured to determine, when a port of the second network device receives the difference information, a forwarding port of the second network device according to a pre-configured transmission path;

and the second forwarding unit is used for forwarding the difference information to the forwarding port and forwarding the difference information to other network equipment nodes of the synchronous network through the forwarding port.

optionally, the second forwarding module is specifically configured to: and when one port of the second network equipment receives the difference information, forwarding the difference information to other ports which do not receive the same difference information, and forwarding the difference information to a neighbor network equipment node through the forwarding port.

Referring to fig. 16, fig. 16 is a structural diagram of a synchronization network according to a thirteenth embodiment of the present invention, which can achieve the details of the time synchronization processing method in the ninth embodiment and achieve the same effects. As shown in fig. 16, a synchronization network 1600 is based on a first time synchronization, the synchronization network 1600 comprising a first network device node 1601 and a second network device node 1602, the first network device node 1601 comprising:

An obtaining module 16011, configured to obtain a second time of at least one time reference source;

a first calculating module 16012, configured to calculate difference information between the second time of the at least one time reference source and the first time;

A difference information sending module 16013, configured to send the difference information to the second network device node;

the second network device node 1602 includes:

a first receiving module 16021, which receives the difference information;

a difference processing module 16022, configured to forward the difference information, and/or calculate to obtain the second time according to the received difference information and the first time.

those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

it is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

in the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

the functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A time synchronization processing method is applied to a first network equipment node in a synchronization network for synchronization based on first time, and is characterized by comprising the following steps:

Acquiring a second time of at least one time reference source;

sending the difference information to other network equipment nodes of the synchronous network;

The difference information is carried in time difference message information, the time difference message also comprises a sequence number used for identifying the sending times of the message, and the sequence number is used for determining the sequence of the time difference information message.

2. the method of claim 1, wherein the step of sending the difference information to other network device nodes of the synchronous network comprises:

and sending currently acquired difference information corresponding to the second time of the at least one time reference source to other network equipment nodes of the synchronous network at intervals of a preset time period or when a sending condition is met.

3. The method of claim 1, wherein the time difference information message further comprises identity information of the time reference source.

4. a time synchronization processing method is applied to a second network equipment node in a synchronization network for performing synchronization based on first time, and is characterized by comprising the following steps:

Calculating to obtain a second time of the at least one time reference source according to the received difference information and the first time;

The receiving the difference information includes: receiving a time difference information message, wherein the time difference information message comprises difference information and a serial number used for identifying the sending times of the message;

The method further comprises the following steps:

and judging whether difference information is received or not according to the serial number.

5. the method of claim 4, wherein after the step of calculating a second time to obtain the at least one time reference source based on the received difference information and the first time, the method further comprises:

Outputting the second time of the at least one time reference source to a downstream device accessing the second network device node.

6. The method of claim 4, wherein the step of calculating a second time of the at least one time reference source based on the received difference information and the first time comprises:

when the difference information is received, calculating and obtaining second time of the at least one time reference source according to the received difference information and the first time; or,

And when the first time reaches a preset time point, calculating to obtain a second time of the at least one time reference source according to the received difference information and the first time.

7. The method according to any one of claims 4 to 6, wherein after the step of determining whether difference information is received according to the sequence number, the method further comprises:

When the difference information is not received, sending a request message for resending the difference information to an upstream network equipment node;

8. The method according to any one of claims 4 to 6, further comprising:

And forwarding the difference information.

9. The method of claim 8, wherein the forwarding the difference information comprises:

When a port of the second network equipment receives the difference value information, determining a forwarding port of the second network equipment according to a pre-configured transmission path;

and forwarding the difference information to the forwarding port, and forwarding to other network equipment nodes of the synchronous network through the forwarding port.

10. the method of claim 8, wherein the forwarding the difference information comprises:

and when one port of the second network equipment receives the difference information, forwarding the difference information to other ports which do not receive the same difference information, and forwarding the difference information to the neighbor network equipment nodes through the other ports.

11. a time synchronization processing method is applied to a second network equipment node in a synchronization network for performing synchronization based on first time, and is characterized by comprising the following steps:

forwarding the difference information;

the receiving the difference information includes: receiving a time difference information message, wherein the time difference information message comprises difference information and a serial number used for identifying the sending times of the message, and the serial number is used for determining the sequence of the time difference information message.

12. The method of claim 11, wherein the forwarding the difference information comprises:

13. The method of claim 11, wherein the forwarding the difference information comprises:

14. A time synchronization processing method is applied to a synchronization network for synchronization based on first time, and is characterized by comprising the following steps:

The other network equipment nodes receive the difference value information, forward the difference value information and/or calculate and obtain the second time according to the received difference value information and the first time;

15. A time synchronization processing apparatus applied to a first network device node in a synchronization network that performs synchronization based on a first time, the apparatus comprising:

the difference information sending module is used for sending the difference information to other network equipment nodes of the synchronous network;

16. The apparatus of claim 15, wherein the difference information sending module is specifically configured to: and sending currently acquired difference information corresponding to the second time of the at least one time reference source to other network equipment nodes of the synchronous network at intervals of a preset time period or when a sending condition is met.

17. The apparatus of claim 15, wherein the time difference information message further comprises identity information of the time reference source.

18. A time synchronization processing apparatus applied to a second network device node in a synchronization network that performs synchronization based on a first time, the apparatus comprising:

The second calculation module is used for calculating and obtaining second time of the at least one time reference source according to the received difference information and the first time;

the first receiving module is specifically configured to: receiving a time difference information message, wherein the time difference information message comprises difference information and a serial number used for identifying the sending times of the message;

The device further comprises:

19. the apparatus of claim 18, further comprising:

20. The apparatus of claim 18, wherein the second computing module is specifically configured to: when the difference information is received, calculating and obtaining second time of the at least one time reference source according to the received difference information and the first time; or when the first time reaches a preset time point, calculating and obtaining a second time of the at least one time reference source according to the received difference information and the first time.

21. The apparatus of any one of claims 18 to 20, further comprising:

22. the apparatus of any one of claims 18 to 20, further comprising: and the first forwarding module is used for forwarding the difference information.

23. The apparatus of claim 22, wherein the first forwarding module comprises:

24. the apparatus of claim 23, wherein the first forwarding module is specifically configured to: and when one port of the second network equipment receives the difference information, forwarding the difference information to other ports which do not receive the same difference information, and forwarding the difference information to a neighbor network equipment node through the forwarding port.

25. A time synchronization processing apparatus applied to a second network device node in a synchronization network that performs synchronization based on a first time, the apparatus comprising:

The second forwarding module is used for forwarding the difference information;

26. the apparatus of claim 25, wherein the second forwarding module comprises:

27. the apparatus of claim 25, wherein the second forwarding module is specifically configured to: and when one port of the second network equipment receives the difference information, forwarding the difference information to other ports which do not receive the same difference information, and forwarding the difference information to the neighbor network equipment nodes through the other ports.

28. a synchronization network based on a first time synchronization, the synchronization network comprising a first network device node and a second network device node, the first network device node comprising:

the second network device node comprises:

The first receiving module is used for receiving the difference information;

the difference processing module is used for forwarding the difference information and/or calculating and obtaining the second time according to the received difference information and the first time;