CN108259105B - time synchronization processing method and device and synchronization network - Google Patents

Abstract

The present invention provides a time synchronization processing method, device, and synchronization network. The method is applied to a first network device node in a synchronization network that performs synchronization based on a first time, including: obtaining a second time of at least one time reference source; calculating Difference information between the second time of the at least one time reference source and the first time; sending the difference information to other network device nodes of the synchronization network. Since each network device node in the synchronization network can calculate the second time of the time reference source according to the difference information transmitted by the first network device node and the first time used by the synchronization network, in a set of clock synchronization system, realize The scheme of different time transmission is solved, so the problem of transmitting different time references in a synchronous network is solved.

Description

A time synchronization processing method, device and synchronization network

technical field

The invention relates to the technical field of the Internet, in particular to a time synchronization processing method, device and synchronization network.

Background technique

In the prior art, different applications may require different time synchronization networks to transmit time signals of different references. For example, in the mobile communication system, the log reporting and alarm time of WAP, SMS, MMS, BOSS, various gateways, intelligent network, network management system, signaling equipment, transmission equipment, data equipment, etc., use the NTP (Network Time Protocol) network protocol . In addition, in order to meet the synchronization requirements of base stations in TD-SCDMA/TD-LTE and other mobile communication systems, the PTP (Picture Transfer Protocol) protocol is used to transmit time information for base stations.

In addition, time synchronization is divided 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 the synchronization between nodes in the network, not necessarily synchronization with an absolute time scale.

In synchronization applications, some applications require absolute time synchronization, such as billing, financial transactions, etc., and some applications only require relative time synchronization between nodes, such as carrier aggregation (CA) services between base stations, which need to provide two The synchronization error between base stations does not exceed several hundred nanoseconds.

Therefore, what synchronization requirements need to be considered when building a time synchronization network. For different requirements, time synchronization networks need to be deployed independently. Due to the need for independent deployment, the following problems will arise in the network:

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 time synchronization processing systems, including software and hardware support, which makes the support cost of the network device relatively high.

Second, as shown in Figure 1, for a shared network, it is difficult to transfer different times for different operators in a co-constructed shared network. As shown in the figure, operators A/B/C share the intermediate transmission network for downstream base stations Backhaul, for conventional transmission equipment, there is only one set of system clock, assuming that the intermediate transmission network tracks the time server of operator A, then since the internal system time of the intermediate node has been synchronized with the time of operator A, in the same The Zhang network can no longer transmit the time provided by the time servers of operator B and operator C, making it impossible to transmit different times on the co-constructed and shared network.

Third, because some applications only require relative time synchronization between nodes, nodes in a small-scale network can calibrate each other to achieve relative time synchronization. At this time, there is a deviation between this small-scale network and the external absolute time reference, but because the nodes have been synchronized with each other and cannot be synchronized with the external absolute time reference, then this small-scale network can no longer serve other applications that require absolute time reference. .

To sum up, a synchronous network hopes to serve different applications. Some applications may require different time bases, some applications require relative time, and some applications require absolute time. So how to transmit different time bases in a synchronous network It has become a technical problem that needs to be solved urgently.

Contents of the invention

Embodiments of the present invention provide a time synchronization processing method, device and synchronization network to solve the problem of transferring different time references in a synchronization network.

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

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

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

Send the difference information to other network device nodes of the synchronization network.

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

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

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

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

The difference information is forwarded.

In a fourth aspect, the embodiment of the present invention also provides a time synchronization processing method, which is applied to a synchronization network based on a first time synchronization, and the time synchronization processing method includes:

obtaining a second time of at least one time reference source by a first network device node in said synchronization network;

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

The first network device node sends the difference information to other network device nodes of the synchronization network;

The other network device node receives the difference information, forwards the difference information, and/or calculates and obtains the second time according to the received difference information and the first time.

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

An acquisition module, configured to acquire the second time of at least one time reference source;

A first calculation module, 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, configured to send the difference information to other network device nodes of the synchronization network.

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

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

The second calculation module is configured to calculate and obtain the second time of the at least one time reference source according to the received difference information and the first time.

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

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

The second forwarding module is configured to forward the difference information.

In an eighth aspect, an embodiment of the present invention further provides a synchronization network, 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 include:

An acquisition module, configured to acquire the second time of at least one time reference source;

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

The second network device node includes:

The first receiving module receives difference information;

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

In this way, in the embodiment of the present invention, the second time of at least one time reference source is obtained; the difference information between the second time of the at least one time reference source and the first time is calculated; and the difference information is sent to other network device nodes of the synchronization network. Since each network device node in the synchronization network can calculate the second time of the time reference source according to the difference information transmitted by the first network device node and the first time used by the synchronization network, in a set of clock synchronization system, realize The scheme of different time transmission is solved, so the problem of transmitting different time references in a synchronous network is solved.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

Figure 1 is a shared network transmission architecture diagram;

Fig. 2 is a flow chart of the time synchronization processing method provided by the first embodiment of the present invention;

FIG. 3 is a flowchart of a time synchronization processing method provided by a second embodiment of the present invention;

FIG. 4 is a flowchart of a time synchronization processing method provided by a third embodiment of the present invention;

5 is a schematic diagram of a clock processing flow of a second network device node in a time synchronization processing method provided by an embodiment of the present invention;

FIG. 6 is a flowchart of a time synchronization processing method provided by a fourth embodiment of the present invention;

7 is one of the flowcharts of the time synchronization processing method provided by the fifth embodiment of the present invention;

FIG. 8 is the second flowchart of the time synchronization processing method provided by the fifth embodiment of the present invention;

FIG. 9 is a flowchart of a time synchronization processing method provided by a sixth embodiment of the present invention;

FIG. 10 is a flowchart of a time synchronization processing method provided by a seventh embodiment of the present invention;

FIG. 11 is a flowchart of a time synchronization processing method provided by the eighth embodiment of the present invention;

FIG. 12 is a flowchart of a time synchronization processing method provided by the ninth embodiment of the present invention;

FIG. 13 is a structural diagram of a time synchronization processing device provided by a tenth embodiment of the present invention;

FIG. 14 is a structural diagram of a time synchronization processing device provided by an eleventh embodiment of the present invention;

FIG. 15 is a structural diagram of a time synchronization processing device provided by a twelfth embodiment of the present invention;

Fig. 16 is a structural diagram of a synchronization network provided by a thirteenth embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts 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 the first time, as shown in FIG. 2, the time synchronization processing method includes the following steps:

Step 201, acquire a second time of at least one time reference source.

The embodiments of the present invention are mainly applied to a first network device node in a synchronous network that performs synchronization based on a first time, and the first network device node is a network device node that can obtain a time reference source. Specifically, multiple network device nodes may be included in the synchronization network. In the synchronization network, the time of a time reference source may be obtained as the first time for time synchronization, or the time synchronization may be performed based on the first time calculated from the time reference source. Time synchronization may also mean that multiple network device nodes perform time calculation according to their own time to obtain the first time, so as to perform time synchronization, which is not further limited here. In the synchronous network, at least one network device node can obtain the corresponding time of more than one time reference source, so as to obtain the above-mentioned second time.

It can be understood that the times corresponding to the multiple time reference sources are all different, and no further description will be given here on the number and time of the time reference sources. In this embodiment, network device nodes that can obtain the second time of the time reference source are collectively referred to as first network device nodes. That is to say, there may be one or more first network device nodes in a synchronous network. For example, in the same synchronization network, a first network device node may be set to obtain the second time of multiple 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, a network system contains two synchronous networks, wherein, after the network device node in the first synchronous network obtains the second time of the above-mentioned time reference source, it can output the second time of the time reference source to In the first network device node of the second synchronization network.

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

In this step, there may be multiple time reference sources, and the difference information includes the corresponding 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 currently acquired second time of the time reference source is compared with the first time for calculation, and difference information between the second time and the first time is determined.

Step 203, sending the difference information to other network device nodes of the synchronization network.

In this step, the method of sending the above-mentioned difference information can be set according to actual needs, for example, the difference information corresponding to each time reference source can be sent one by one, or all the difference information can be packaged and sent together. In addition, the sending path can be set for sending, and the sending can also be sent in a diffusion manner. At the same time, the difference information of the same time reference source can be sent once, the difference information of the same time reference source can also be sent periodically (to update the difference information), and it can also be sent on demand (for example, when Sending is performed when a sending condition is met, and the sending condition may include receiving a request message from a downstream network device node).

In this embodiment, the foregoing other network device nodes are network device nodes other than the first network device node. After other network device nodes receive the above difference information, they can calculate the second time of the time reference source according to the first time used by themselves and the received difference information, and then output the second time, so that Realized the transmission of the second time.

In this way, in the embodiment of the present invention, the second time of at least one time reference source is obtained; the difference information between the second time of the at least one time reference source and the first time is calculated; and the difference information is sent to other network device nodes of the synchronization network. Since each network device node in the synchronization network can calculate the second time of the time reference source according to the difference information transmitted by the first network device node and the first time used by the synchronization network, in a set of clock synchronization system, realize The scheme of different time transmission is solved, so the problem of transmitting different time references in a synchronous network is solved.

As shown in FIG. 3, the time synchronization processing method of the 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 the second time of the at least one time reference source and the first time;

Step 204: Send the currently obtained difference information corresponding to the second time of the at least one time reference source to other network device nodes of the synchronization network every preset time period or when the sending condition is met.

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

It can be understood that the above-mentioned way of outputting the difference information can be set according to actual needs, for example, the first network device node can actively output periodically, or the difference information can be output when receiving a request from a downstream device. output.

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, it can also be controlled to periodically send the same difference information, so as to avoid going online after sending the difference information for the first time The network device node of the network cannot obtain the difference information. In addition, a network device node that goes online after sending the difference information for the first time may also send a request to actively obtain the difference information after going online.

Further, the way of sending the difference information can be set as required. In the first solution of this embodiment, the above step 204 includes:

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

Send the time difference information message to other network device nodes of the synchronization network.

In the second solution of this embodiment, the above step 204 includes:

According to the currently obtained difference information corresponding to the second time of the at least one time reference source and the sequence number used to identify the number of times the message is sent;

Sending the time difference information message to other network equipment nodes of the synchronization network; making the other network equipment nodes determine the sequence of the time difference information message according to the sequence number.

Specifically, each time difference information message may include difference information corresponding to one time reference source, or may include difference information corresponding to all time reference sources. Since in this embodiment, the difference information is sent in the form of a message, and the sequence number is set in the time difference information message, the sequence of each received difference information can be determined according to the sequence number. According to the sequence, it can be determined whether the difference information is missed, so as to realize the loss detection of the difference information. Specifically, it is possible to detect whether the difference information of multiple time reference sources sent at the same time is lost, and it is also possible to detect whether the difference information of the same time reference source sent multiple times is lost.

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

The time synchronization processing method provided by the third embodiment of the present invention is applied to the second network device node in the synchronization network that performs synchronization based on the first time. Referring to FIG. 4, the time synchronization processing method includes the following steps:

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

Step 402: Calculate and obtain a second time of the at least one time reference source according to the received difference information and the first time.

In the embodiment of the present invention, the above-mentioned difference information may be the difference information sent by the above-mentioned first network device node, or may be the time information sent by the intermediate network device node between the above-mentioned first network device node and the second network device node, The intermediate network device node may be a second network device node, or a network device node that is only used to forward the difference information. Wherein, 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. Then it is directly or indirectly sent to the second network device node. After the second network device node receives the above difference information, it can calculate the first time of the time reference source according to the first time it is in and the received difference information. second time, and then output the second time, thereby realizing the transmission of the second time of the time reference source in the same synchronization network.

In this embodiment, as shown in Figure 5, the clock processing flow of the second network device node includes the first flow of the existing solution for the first time synchronization processing and the second flow of this solution for the time reference source processing, wherein the first The processing flow includes: processing the main time source and the system clock, and the second processing flow includes: receiving difference information, forwarding the difference information, or providing the second time obtained from the time reference source to the downstream device through calculation.

In the embodiment of the present invention, the difference information is received; the difference information records the time difference between the first time and the second time of at least one time reference source; according to the received difference information and the The first time calculation obtains the second time of the at least one time reference source. Because in the second network device node that cannot directly obtain the second time of the time reference source, after obtaining the difference information between the second time of the time reference source and the first time, the time of the time reference source is calculated according to the difference information The second time enables all second network device nodes in the same synchronization network to obtain the second time of the time reference source, thus solving the problem of transferring different time references in a synchronization network.

As shown in FIG. 6, the time synchronization processing method of the fourth embodiment of the present invention includes:

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

Step 402, calculating and obtaining 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 connected to 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 (that is, a downstream transmission device for transmitting the second time of the time reference source), or an application end device (such as a billing device, user equipment, etc.).

It can be understood that the second time output method can be set according to actual needs, for example, it can be actively output by the second network device node, or it can be calculated to obtain the time reference source when receiving a request from a downstream device At the second time, output at the second time is finally performed.

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 To carry out, specifically, the following will describe this in detail:

As shown in FIG. 7, the first solution of the time synchronization processing method of the fifth embodiment of the present invention includes:

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

Step 4021: When the difference information is received, calculate and obtain the 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, the second solution of the time synchronization processing method of the fifth embodiment of the present invention includes:

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

Step 4022: When the first time reaches a preset time point, calculate and obtain 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 first scheme or the second scheme may be adopted for the output adjustment manner of the second time in each second network device node, which may be specifically set according to actual needs. Wherein, in the first scheme, each second network equipment node can perform calculation and output after receiving the difference information; in the second scheme, after receiving the difference information, each second network equipment node, Calculation and output can be performed at the same time according to the agreed time. In this embodiment, being able to perform calculation and output means that the currently received difference information can be used as a standard for calculating the second time of the time reference source. The following will take the periodic reception of the difference information corresponding to the same time reference source as an example to describe in detail:

For example, after the second network device node receives the first difference information for the first time, if it receives a second time request from the downstream device for the time reference source, the second network device node will use the first difference information and the first time are calculated to obtain the second time of the time reference source as the 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 solution is adopted, when receiving the second time request from the downstream device, the second network device node will use the second difference information and the first time to calculate the second time of the time reference source as an output of the second time request message;

If the second solution is adopted, before the preset time point arrives, when receiving the second time request from the downstream device for the time reference source, the second network device node will use the first difference information and the first The time is calculated to obtain the second time of the time reference source as an output of the second time request message. After the preset time point arrives, the second network device node will use the second difference information and the first time to calculate the second time of the time reference source as the output of the second time request message.

In the embodiment of the present invention, the second time of the time reference source of each second network device node can be synchronously calculated and output, or asynchronously calculated and output, thus improving the flexibility of the second time control.

As shown in FIG. 9, the time synchronization processing method of the sixth embodiment of the present invention includes:

Step 401, receiving a time difference information message, the time difference information message includes difference information and a sequence number used to identify the number of times the message is sent; the difference information records the first time and at least one the time difference between the second times of the time reference sources;

Step 404, judge whether difference information is received according to the serial number; if yes, execute step 402, if not, execute step 405;

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

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

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

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

Specifically, when the above-mentioned difference information is sent once, it only needs to detect whether the difference information is received according to a preset time point. When the above-mentioned difference information is sent as periodic information, it is detected whether the above-mentioned difference information is received according to a preset cycle time. Further, the above-mentioned difference information may be sent by using a time difference information message, and the time difference information message includes a sequence number, and it may be determined according to the sequence number whether to receive an updated time difference information message. Wherein, when the second network device node does not obtain the above-mentioned difference information, it may send a request message to the first network device node, or send a request message to any intermediate network transmission path from the first network device node to the second network device node. A network node sends a request message.

As shown in FIG. 10, the time synchronization processing method of the seventh embodiment of the present invention includes:

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

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

Step 406, forwarding the difference information.

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

The foregoing forwarding of the difference information includes: when a port of the second network device receives the difference information, forwarding the difference information to other ports that have not received the same difference information, and sending Neighbor network device nodes forward. Specifically, the second network device node includes a plurality of ports, and when one of the network ports (hereinafter referred to as the receiving port) receives the difference information, in the process of preparing to forward, if other than the receiving port If the port has received the same difference information, it will not forward the port that has received the same difference information. If there is no other port to send, or other ports have received the same difference information, the second network device node will not forward the message.

That is, in this embodiment, the above-mentioned second network device may be used for forwarding difference information, and may also be used for calculation of the second time, and may also be used for forwarding of the second time. When forwarding, the difference information or the second time corresponding to multiple time reference sources may be forwarded, or the difference information or the second time of one time reference source may be forwarded. When calculating the second time, the calculation of the second time of multiple time reference sources may be performed, or the calculation of one time reference source may be performed. 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.

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

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

Step 1102, forward the difference information.

In the embodiment of the present invention, the above-mentioned difference information may be the difference information sent by the above-mentioned first network device node, or may be the time information sent by the intermediate network device node between the above-mentioned first network device node and the second network device node, The intermediate network device node may be a second network device node, or a network device node that is only used to forward the difference information. Wherein, 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. Then it is directly or indirectly sent to the second network device node, and the second network device node can directly forward the difference information to the downstream network device after receiving the above difference information. That is, in this embodiment, the foregoing second network device may only be used for forwarding difference information. When forwarding, the difference information corresponding to multiple time reference sources may be forwarded, or only the difference information of one time reference source may be forwarded.

Specifically, in this embodiment, the foregoing forwarding of the difference information includes: when a port of the second network device receives the difference information, determine the second network information according to a pre-configured transmission path. A forwarding port of the device; forwarding the difference information to the forwarding port, and forwarding to other network device nodes of the synchronization network through the forwarding port.

The foregoing forwarding of the difference information includes: when a port of the second network device receives the difference information, forwarding the difference information to other ports that have not received the same difference information, through The forwarding port is forwarded to a neighbor network device node. Specifically, the second network device node includes a plurality of ports, and when one of the network ports (hereinafter referred to as the receiving port) receives the difference information, in the process of preparing to forward, if other than the receiving port If the port has received the same difference information, it will not forward the port that has received the same difference information.

In the embodiment of the present invention, the difference information is received; the difference information records the time difference between the first time and the second time of at least one time reference source; according to the pre-configured transmission path, the difference The information is forwarded; or, the difference information is forwarded to a network device node adjacent to the second network device node. Because in the second network device node that cannot directly obtain the second time of the time reference source, after obtaining the difference information between the second time of the time reference source and the first time, it is forwarded to each network device node according to the difference information In this way, the second time of the time reference source can be calculated by each network device node, so that all the second network device nodes in the same synchronization network can obtain the second time of the time reference source, thus solving the problem in a The problem of passing different time bases in a synchronous network.

The time synchronization processing method provided by the ninth embodiment of the present invention is applied to a synchronization network that performs synchronization based on the first time. Referring to FIG. 12, the time synchronization processing method includes the following steps:

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

Step 1202, the first network device node calculates 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 synchronization network;

Step 1204, the other network device 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 this embodiment, the above-mentioned first network device node is a network device node that can obtain a time reference source, and the first network device node can obtain the second time of one or more time reference sources, and can respectively calculate one or more The difference information between the second time of the time reference source and the first time, and then send the difference information corresponding to the second time of one or more time reference sources to the second network device node.

When the above-mentioned second network device node receives the difference information corresponding to the second time from multiple time reference sources, it may only forward it, or only perform the calculation of the second time, or may simultaneously perform the calculation of the second time and Output of difference information. Specifically, when forwarding the difference information, the difference information corresponding to the second time of one or more time reference sources can be forwarded; when calculating the second time, the time difference information of one or more time reference sources can also be calculated Second time.

In this embodiment, because in the second network device node that cannot directly obtain the second time of the time reference source and other network device nodes in the synchronization network, by obtaining the difference information between the second time of the time reference source and the first time Finally, the second time of the time reference source is calculated according to the difference information, so that all network device nodes in the same synchronization network can obtain the second time of the time reference source, thus solving the problem in a synchronization network Problems passing different time bases.

Referring to FIG. 13 , FIG. 13 is a structural diagram of a time synchronization processing device provided by the tenth embodiment of the present invention, which can realize the details of the time synchronization processing methods in the first to second embodiments, and achieve the same effect. As shown in FIG. 13 , the time synchronization processing apparatus 1300 is applied to the first network device node in the synchronization network based on the first time synchronization, and includes an acquisition module 1301, a first calculation module 1302 and a difference information sending module 1303, wherein :

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

A first calculation module 1302, 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 1303, configured to send the difference information to other network device nodes of the synchronization network.

Optionally, the difference information sending module 1303 is specifically configured to: send the currently acquired difference information corresponding to the second time of the at least one time reference source every preset time period or when a sending condition is met, sent to other network device nodes of the synchronization network.

Optionally, the difference information sending module 1303 includes:

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

The first sending unit is configured to send the time difference information message to other network device nodes of the synchronization network.

Optionally, the difference information sending module 1303 includes:

A second message generating unit, configured to use the currently obtained difference information corresponding to the second time of the at least one time reference source and a sequence number used to identify the number of times the message is sent;

The second sending unit is configured to send the time difference information message to other network equipment nodes of the synchronization network; so that the other network equipment nodes determine the time difference information message according to the sequence number order.

In this way, in the embodiment of the present invention, the second time of at least one time reference source is obtained; the difference information between the second time of the at least one time reference source and the first time is calculated; and the difference information is sent to other network device nodes of the synchronization network. Since each network device node in the synchronization network can calculate the second time of the time reference source according to the difference information transmitted by the first network device node and the first time used by the synchronization network, in a set of clock synchronization system, realize The scheme of different time transmission is solved, so the problem of transmitting different time references in a synchronous network is solved.

Referring to FIG. 14 , FIG. 14 is a structural diagram of a time synchronization processing device provided by the eleventh embodiment of the present invention, which can realize the details of the time synchronization processing methods in the third to seventh embodiments and achieve the same effect. As shown in FIG. 14, the time synchronization processing apparatus 1400 is applied to a second network device node in a synchronization network based on the first time synchronization, including a first receiving module 1401 and a second computing module 1402, wherein:

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

The second calculation module 1402 is configured to calculate and obtain a second time of the at least one time reference source according to the received difference information and the first time.

Optionally, the device also includes:

An output module, configured to output the second time of the at least one time reference source to a downstream device connected to the second network device node.

Optionally, the second calculating module is specifically configured to: when receiving the difference information, calculate and obtain the first time of the at least one time reference source according to the received difference information and the first time. Two times; or, when the first time reaches a preset time point, calculate and obtain the 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: receive a time difference information message, where the time difference information message includes difference information and a sequence number used to identify the number of times the message is sent;

The device also includes:

A judging module, configured to judge whether difference information is received.

Optionally, the device also includes:

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

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

Optionally, the device further includes: a first forwarding module, configured to forward the difference information.

Optionally, the first forwarding module includes:

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

The first forwarding unit forwards the difference information to the forwarding port, and forwards the difference information to other network device nodes of the synchronization network through the forwarding port.

Optionally, the first forwarding module is specifically configured to: when a port of the second network device receives the difference information, forward the difference information to other ports that have not received the same difference information The port is forwarded to the neighbor network device node through the forwarding port.

In the embodiment of the present invention, the difference information is received; the difference information records the time difference between the first time and the second time of at least one time reference source; according to the received difference information and the The first time calculation obtains the second time of the at least one time reference source. Because in the second network device node that cannot directly obtain the second time of the time reference source, after obtaining the difference information between the second time of the time reference source and the first time, the time of the time reference source is calculated according to the difference information The second time enables all second network device nodes in the same synchronization network to obtain the second time of the time reference source, thus solving the problem of transferring different time references in a synchronization network.

Referring to FIG. 15 , FIG. 15 is a structural diagram of a time synchronization processing device provided in the twelfth embodiment of the present invention, which can realize the details of the time synchronization processing method in the eighth embodiment and achieve the same effect. As shown in FIG. 15, the time synchronization processing apparatus 1500 is applied to a second network device node in a synchronization network based on the first time synchronization, including a second receiving module 1501 and a second forwarding module 1502, wherein:

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

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

Optionally, the second forwarding module includes:

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

The second forwarding unit forwards the difference information to the forwarding port, and forwards to other network device nodes of the synchronization network through the forwarding port.

Optionally, the second forwarding module is specifically configured to: when a port of the second network device receives the difference information, forward the difference information to other ports that have not received the same difference information The port is forwarded to the neighbor network device node through the forwarding port.

In the embodiment of the present invention, the difference information is received; the difference information records the time difference between the first time and the second time of at least one time reference source; according to the pre-configured transmission path, the difference The information is forwarded; or, the difference information is forwarded to a network device node adjacent to the second network device node. Because in the second network device node that cannot directly obtain the second time of the time reference source, after obtaining the difference information between the second time of the time reference source and the first time, it is forwarded to each network device node according to the difference information In this way, the second time of the time reference source can be calculated by each network device node, so that all the second network device nodes in the same synchronization network can obtain the second time of the time reference source, thus solving the problem in a The problem of passing different time bases in a synchronous network.

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

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

A first calculation 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:

The first receiving module 16021 receives difference information;

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

In this embodiment, because in the second network device node that cannot directly obtain the second time of the time reference source and other network device nodes in the synchronization network, by obtaining the difference information between the second time of the time reference source and the first time Finally, the second time of the time reference source is calculated according to the difference information, so that all network device nodes in the same synchronization network can obtain the second time of the time reference source, thus solving the problem in a synchronization network Problems passing different time bases.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part 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, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: various media capable of storing program codes such as U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (28)

1. A time synchronization processing method, applied to a first network device node in a synchronous network synchronized based on a first time, characterized in that, comprising: obtaining a second time of at least one time reference source; calculating difference information between a second time of the at least one time reference source and the first time; sending the difference information to other network device nodes of the synchronization network; Wherein, the difference information is carried in the time difference message information, and the time difference message also includes a sequence number used to identify the number of times the message is sent, and the sequence number is used to determine the time difference Sequence of information packets. 2. The method according to claim 1, wherein the step of sending the difference information to other network device nodes of the synchronization network comprises: Sending the currently obtained difference information corresponding to the second time of the at least one time reference source to other network device nodes of the synchronization network every preset time period or when the sending condition is met. 3. The method according to claim 1, wherein the time difference information message further includes identity information of the time reference source. 4. A time synchronization processing method, applied to a second network device node in a synchronous network synchronized based on the first time, characterized in that, comprising: receiving difference information; the difference information records the time difference between the first time and a second time of at least one time reference source; calculating and obtaining a second time of the at least one time reference source according to the received difference information and the first time; The receiving difference information includes: receiving a time difference information message, the time difference information message including difference information and a sequence number used to identify the number of times the message is sent; The method also includes: It is judged whether difference information is received according to the sequence number. 5. The method according to claim 4, wherein after the step of calculating and obtaining the second time of the at least one time reference source according to the received difference information and the first time, the The method also includes: Outputting the second time of the at least one time reference source to a downstream device connected to the second network device node. 6. The method according to claim 4, wherein the step of calculating and obtaining the second time of the at least one time reference source according to the received difference information and the first time comprises: When receiving the difference information, calculate and obtain the 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 the preset time point, calculate and obtain the 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 judging whether difference information is received according to the serial number, the method further comprises: When the difference information is not received, send a request message for resending the difference information to an upstream network device node; Wherein, the upstream network device node is the first network device node that acquires the second time of the at least one time reference source, or the upstream network device node transmits the difference information from the first network device node an intermediate network device node to said second network device node. 8. The method according to any one of claims 4 to 6, further comprising: The difference information is forwarded. 9. The method according to claim 8, wherein the forwarding of the difference information comprises: When a port of the second network device receives the difference information, determine a forwarding port of the second network device according to a pre-configured transmission path; Forwarding the difference information to the forwarding port, and forwarding to other network device nodes of the synchronization network through the forwarding port. 10. The method according to claim 8, wherein the forwarding of the difference information comprises: When a port of the second network device receives the difference information, it forwards the difference information to other ports that have not received the same difference information, and forwards the difference information to neighboring network device nodes through the other ports. 11. A time synchronization processing method, applied to a second network device node in a synchronous network synchronized based on the first time, characterized in that it comprises: receiving difference information; the difference information records the time difference between the first time and a second time of at least one time reference source; Forwarding the difference information; The receiving difference information includes: receiving a time difference information message, the time difference information message including difference information and a serial number used to identify the number of times the message is sent, and the serial number is used to determine the time Sequence of difference information packets. 12. The method according to claim 11, wherein the forwarding of the difference information comprises: When a port of the second network device receives the difference information, determine a forwarding port of the second network device according to a pre-configured transmission path; Forwarding the difference information to the forwarding port, and forwarding to other network device nodes of the synchronization network through the forwarding port. 13. The method according to claim 11, wherein the forwarding of the difference information comprises: When a port of the second network device receives the difference information, it forwards the difference information to other ports that have not received the same difference information, and forwards the difference information to neighboring network device nodes through the other ports. 14. A time synchronization processing method, applied in a synchronization network based on first time synchronization, characterized in that, the time synchronization processing method comprises: a first network device node in said synchronization network acquires a second time of at least one time reference source; calculating, by the first network device node, difference information between a second time of the at least one time reference source and the first time; The first network device node sends the difference information to other network device nodes of the synchronization network; The other network device node receives difference information, forwards the difference information, and/or calculates and obtains the second time according to the received difference information and the first time; Wherein, the difference information is carried in the time difference message information, and the time difference message also includes a sequence number used to identify the number of times the message is sent, and the sequence number is used to determine the time difference Sequence of information packets. 15. A time synchronization processing device, applied to a first network device node in a synchronous network that performs synchronization based on a first time, characterized in that it comprises: An acquisition module, configured to acquire the second time of at least one time reference source; A first calculation module, 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, configured to send the difference information to other network device nodes of the synchronization network; Wherein, the difference information is carried in the time difference message information, and the time difference message also includes a sequence number used to identify the number of times the message is sent, and the sequence number is used to determine the time difference Sequence of information packets. 16. The device according to claim 15, wherein the difference information sending module is specifically configured to: send the currently acquired at least one time reference source every preset time period or when a sending condition is established The difference information corresponding to the second time is sent to other network device nodes of the synchronization network. 17. The device according to claim 15, wherein the time difference information message further includes identity information of the time reference source. 18. A time synchronization processing device, applied to a second network device node in a synchronization network that performs synchronization based on a first time, characterized in that it includes: The first receiving module receives difference information; the difference information records the time difference between the first time and a second time of at least one time reference source; A second calculation module, configured to calculate and obtain a 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: receive a time difference information message, the time difference information message includes difference information and a sequence number used to identify the number of times the message is sent; The device also includes: A judging module, configured to judge whether difference information is received. 19. The device according to claim 18, further comprising: An output module, configured to output the second time of the at least one time reference source to a downstream device connected to the second network device node. 20. The device according to claim 18, wherein the second calculation module is specifically configured to: when receiving the difference information, according to the received difference information and the first time Calculate and obtain the second time of the at least one time reference source; or, when the first time reaches a preset time point, calculate and obtain the at least one time reference according to the received difference information and the first time The second time of the time reference source. 21. The device according to any one of claims 18 to 20, further comprising: A request sending module, configured to send a request message for resending difference information to an upstream network device node when the difference information is not received; Wherein, the upstream network device node is the first network device node that acquires the second time of the at least one time reference source, or the upstream network device node transmits the difference information from the first network device node an intermediate network device node to said second network device node. 22. The device according to any one of claims 18-20, further comprising: a first forwarding module, configured to forward the difference information. 23. The device according to claim 22, wherein the first forwarding module comprises: A first determining unit, configured to determine a forwarding port of the second network device according to a pre-configured transmission path when a port of the second network device receives the difference information; The first forwarding unit forwards the difference information to the forwarding port, and forwards the difference information to other network device nodes of the synchronization network through the forwarding port. 24. The device according to claim 23, wherein the first forwarding module is specifically configured to: when a port of the second network device receives the difference information, transfer the difference information to forwarding to other ports that have not received the same difference information, and forwarding to neighboring network device nodes through the forwarding port. 25. A time synchronization processing device, applied to a second network device node in a synchronization network that performs synchronization based on a first time, characterized in that it comprises: The second receiving module is configured to receive difference information; the difference information records the time difference between the first time and a second time of at least one time reference source; The second forwarding module forwards the difference information; Wherein, the difference information is carried in the time difference message information, and the time difference message also includes a sequence number used to identify the number of times the message is sent, and the sequence number is used to determine the time difference Sequence of information packets. 26. The device according to claim 25, wherein the second forwarding module comprises: A second determining unit, configured to determine a forwarding port of the second network device according to a pre-configured transmission path when a port of the second network device receives the difference information; The second forwarding unit forwards the difference information to the forwarding port, and forwards to other network device nodes of the synchronization network through the forwarding port. 27. The device according to claim 25, wherein the second forwarding module is specifically configured to: when a port of the second network device receives the difference information, transfer the difference information to Forward to other ports that have not received the same difference information, and forward to neighbor network device nodes through the other ports. 28. A synchronization network, wherein the synchronization network is based on first time synchronization, wherein the synchronization network includes a first network device node and a second network device node, and the first network device node includes: An acquisition module, configured to acquire the second time of at least one time reference source; A first calculation module, 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, configured to send the difference information to the second network device node; The second network device node includes: The first receiving module receives difference information; A difference processing module, configured to forward the difference information, and/or calculate and obtain the second time according to the received difference information and the first time; Wherein, the difference information is carried in the time difference message information, and the time difference message also includes a sequence number used to identify the number of times the message is sent, and the sequence number is used to determine the time difference Sequence of information packets.