阅读说明：本技术 一种基于光传送网部署1588v2时钟专网的方法 (Method for deploying 1588v2 clock private network based on optical transport network ) 是由 吴伯超 余晗 胡春波 姚全锋 胡翔 胡记伟 于 2019-10-31 设计创作，主要内容包括：本发明提供一种基于光传送网部署1588v2时钟专网的方法,属于光网络通信领域,包括：在光传送网的1588v2时钟传输路径上,利用OTN设备的空余槽位部署1588v2时钟专网,包括部署1588v2时钟源设备、时钟板卡、1588v2时钟接收设备、通信光缆以及时钟光缆。本发明的有益效果：充分利用现有OTN机框的空余插槽资源,并且在OTN部署1588v2时钟时,对已部署完成的OTN业务不做任何修改,避免利用业务板卡部署1588v2带来的业务中断,对安全生产具有重大意义,有利于提升OTN网络的经济效益。(The invention provides a method for deploying 1588v2 clock private network based on optical transport network, belonging to the field of optical network communication, comprising the following steps: on a 1588v2 clock transmission path of an optical transport network, a 1588v2 clock private network is deployed by using spare slots of OTN equipment, and the spare slots comprise 1588v2 clock source equipment, a clock board card, 1588v2 clock receiving equipment, a communication optical cable and a clock optical cable. The invention has the beneficial effects that: the spare slot resources of the existing OTN machine frame are fully utilized, and when the 1588v2 clock is deployed in the OTN, the deployed OTN service is not modified, service interruption caused by the fact that the service board card is used for deploying 1588v2 is avoided, the method has great significance for safety production, and economic benefits of the OTN network are improved.)

1. A method for deploying 1588v2 clock private network based on optical transport network, the optical transport network comprises at least one OTN device and at least one communication optical cable connecting all the OTN devices to form a preset topological structure; the method is characterized in that a service private network is deployed on the optical transport network, and the method comprises the following steps:

presetting a clock transmission path of a 1588v2 clock private network based on the optical transport network, respectively selecting an empty slot position as a clock slot position on each OTN device positioned on the clock transmission path, respectively connecting a clock board card on each clock slot position, connecting all the clock board cards through a plurality of clock optical cables according to the clock transmission path, respectively connecting at least one 1588v2 clock source device and at least one 1588v2 clock receiving device through the communication optical cables at the starting end and the tail end of the clock transmission path, and setting a software module on the optical transport network, wherein the software module is used for sending a starting instruction to the 1588v2 clock private network after receiving a user instruction.

2. The method of claim 1, wherein the software module is embedded with management software which is matched with the 1588v2 private clock network.

3. The method of claim 1, wherein the clock board is powered by a power system of the OTN device.

4. The method of claim 1, wherein each OTN device located on the service transmission path of the private service network has a service slot, the service cards are connected to the service slot, and the service cards are connected to each other through a service cable.

5. The method of claim 4, wherein the OTN device employs a chassis device architecture of a subrack and the traffic boards.

6. The method of claim 4, wherein a plurality of the slots are provided in the subrack, and the clock board and the service board on the same OTN device are connected to different slots respectively.

7. The method of claim 4, wherein the communications cable comprises the clock cable and the service cable.

8. The method of claim 1, wherein the 1588v2 clock source device is interconnected with the OTN device located at the start end of the clock transmission path through an optical interface and the optical communication cable;

the clock board cards are interconnected with the clock optical cable through optical interfaces;

the 1588v2 clock receiving equipment and the OTN equipment positioned at the tail end of the clock transmission path are interconnected with the communication optical cable through an optical interface.

9. The method of claim 1, wherein the predetermined topology is a ring topology, a chain topology, a star topology, or a mesh topology.

10. The method of claim 1, wherein 1588v2 is the v2 version of the precision clock synchronization protocol standard for IEEE-defined network measurement and control systems.

Technical Field

The invention relates to the technical field of optical network communication, in particular to a method for deploying a 1588v2 clock private network based on an optical transport network.

Background

An Optical Transport Network (OTN) is responsible for long-distance and large-capacity data transmission, and is responsible for transmitting data streams between OTN sites, which is one of the basic stones of modern communication transmission.

Traditional clock receiving equipment adopts the GPS time synchronization system of one-way channel, and although the acquisition of synchronizing signal is reliable and stable, the precision is high, but the price is high (equipment, installation, maintenance cost), the construction degree of difficulty is big (the basic station is put in the basement), the failure rate is also high, has political and safety risk simultaneously.

The 1588v2 clock is a universal specification for improving the timing synchronization capability of a network system, enables a distributed communication network to have strict timing synchronization and is applied to modern communication systems. Deployment of 1588v2 clocks through OTNs is an effective addition to GPS time synchronization systems. A large number of OTN networks have been deployed around the world, but there are still some problems to be solved for deploying 1588v2 clocks in an OTN network.

On the one hand, in the initial stage of birth of the OTN network, the 1588v2 theory is not formed yet, and the relevant commercial standard is not published yet. This has led to early OTN devices or OTN boards not supporting the 1588v2 protocol.

And on the other hand, on the investment level, the OTN mainly undertakes the task of long-distance and large-capacity data transmission and is responsible for transmitting data streams among all OTN sites. When an OTN network is built, the requirement of data stream transmission can be met due to investment consideration. Whether the OTN has the function of 1588v2 is not considered, so that part of OTN equipment or part of OTN board card does not support 1588v 2.

Thirdly, on the aspect of safety production, if the deployed service board card of the OTN device does not support the 1588v2 protocol, the board card needs to be replaced by a board card supporting the 1588v2 protocol, which may cause service interruption in the replacement process and affect the use of the OTN network; if the deployed service board card of the OTN device supports the 1588v2 protocol, the data of the OTN service board card needs to be changed, and the 1588v2 data stream is merged into the service data stream, which may cause interruption to the service in operation, thereby affecting the use of the OTN network.

The OTN network is generally deployed on national trunk lines and provincial trunk lines, and the loss caused by 1 second interruption is huge. Therefore, how to deploy the 1588v2 clock without affecting the normal service data forwarding of the OTN network becomes a technical problem which needs to be solved at present.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a method for deploying a 1588v2 clock private network based on an optical transport network, which can deploy a 1588v2 clock private network under the condition of not influencing the normal service data forwarding of the optical transport network.

The invention adopts the following technical scheme:

a method for deploying 1588v2 clock private network based on optical transport network, the optical transport network comprises at least one OTN device and at least one communication optical cable connecting all the OTN devices to form a preset topological structure; a service private network is deployed on the optical transport network, and the method comprises the following steps:

presetting a clock transmission path of a 1588v2 clock private network based on the optical transport network, respectively selecting an empty slot position as a clock slot position on each OTN device positioned on the clock transmission path, respectively connecting a clock board card on each clock slot position, connecting all the clock board cards through a plurality of clock optical cables according to the clock transmission path, respectively connecting at least one 1588v2 clock source device and at least one 1588v2 clock receiving device through the communication optical cables at the starting end and the tail end of the clock transmission path, and setting a software module on the optical transport network, wherein the software module is used for sending a starting instruction to the 1588v2 clock private network after receiving a user instruction.

Preferably, the software module is internally provided with management software matched with the 1588v2 clock private network.

Preferably, the clock board is powered by a power supply system of the OTN device.

Preferably, each OTN device located on the service transmission path of the service private network has a service slot, the service board card is connected to the service slot, and the service board cards are connected to each other through a service optical cable.

Preferably, the OTN device adopts a frame and a frame device architecture of the service board card.

Preferably, be provided with a plurality of on the frame the trench, it is same on the OTN equipment the clock integrated circuit board with the business integrated circuit board is connected respectively in the difference on the trench.

Preferably, the communication optical cable comprises the clock optical cable and the service optical cable.

Preferably, the 1588v2 clock source device and the OTN device located at the start end of the clock transmission path are interconnected with the communication optical cable through an optical interface;

the clock board cards are interconnected with the clock optical cable through optical interfaces;

the 1588v2 clock receiving equipment and the OTN equipment positioned at the tail end of the clock transmission path are interconnected with the communication optical cable through an optical interface.

Preferably, the preset topological structure is a ring topological structure, a chain topological structure, a star topological structure or a net topological structure.

Preferably, 1588v2 is the v2 version of the IEEE defined precision clock synchronization protocol standard for network measurement and control systems.

The invention has the beneficial effects that: the spare slot resources of the existing machine frame are fully utilized to deploy the 1588v2 clock private network, and when the OTN deploys the 1588v2 clock, the deployed OTN service is not modified, service interruption caused by the deployment of the 1588v2 clock by using the service board card is avoided, so that the method has great significance for safety production, and is beneficial to improving the economic benefit of the OTN network.

Drawings

Fig. 1 is a functional block diagram of an optical transport network in which a 1588v2 private clock network is deployed in a preferred embodiment of the present invention.

Reference numerals:

s1-1588v2 clock receiving equipment; s2-1588v2 clock source equipment; s3-a communications cable; s4-frame; s5-clock board card; s6-service board card; s7-service optical cable; s8-a clock optical cable; S9-OTN equipment.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1, a schematic diagram of a method for deploying a 1588v2 clock private network based on an optical transport network, where the optical transport network includes at least one OTN device S9, and all OTN devices S9 are connected by a communication optical cable S3 to form a preset topology. The predetermined topology of the optical transport network may be a ring, chain, star or mesh topology. OTN equipment S9 includes subrack S4, which has a plurality of slots on subrack S4.

The optical transport network is deployed with a service private network, and the service private network corresponds to a service transmission path. The service private network is used for transmitting service data along the service transmission path after the service transmission function is opened. The private service network includes a plurality of service boards S6, and all the service boards S6 are connected by a service cable S7 according to the service transmission path. The service board S6 is deployed on the OTN device S9 located on the service transmission path, and specifically, the service board S6 is connected to a service slot of the OTN device S9 located on the service transmission path (one or more of the plurality of slots of each chassis S4 is preset as a service slot for connecting the service board S6). The OTN equipment S9 hardware may adopt a framed equipment framework of a subrack S4 and a service board S6. Each optical transport network can be provided with a plurality of service private networks.

When a 1588v2 clock is deployed on an optical transport network where a service is deployed and opened, firstly, a clock transmission path of a 1588v2 clock private network based on the optical transport network is preset, other spare slots except for a service slot are selected on a chassis S4 of each OTN device S9 located on the clock transmission path, a spare slot is selected as a clock slot to be connected with a clock board S5, all clock boards S5 are connected with all clock boards S5 by a clock cable S8 according to the clock transmission path, at least one clock source device S2 and at least one clock receiving device S1588 v2 are respectively connected at the start end and the tail end of the clock transmission path through communication cables S3, that is, the clock board S5 located on the OTN device S9 at the start end of the clock transmission path is connected with at least one clock 1588v2 device S2 through a communication cable S3, and at least one clock board 5 located on the tail end of the clock transmission path of the clock transmission cable S3 is connected with at least one clock board 1588v 3684 through a communication cable S466 A 1588v2 clock receiving device S1 is connected.

Selecting an OTN device S9 on an optical transport network to set a software module, wherein management software matched with the 1588v2 clock private network is arranged in the software module, and the software module sends a starting instruction to the 1588v2 clock private network after receiving a user instruction so as to start the 1588v2 clock private network. After the clock transmission function is opened, the clock private network transmits 1588v2 clock data along the clock transmission path. The number of the 1588v2 clock source devices S2, the clock board cards S5 and the 1588v2 clock receiving devices S1 may be multiple. A plurality of private clock networks may be provided on each optical transport network. 1588v2 mentioned above specifically means: IEEE defines "precision clock synchronization protocol standard for network measurement and control systems" v2 version (short: 1588v 2).

In this embodiment, the vacant slot resources of the existing subrack S4 are fully utilized to deploy the 1588v2 clock private network, and when the 1588v2 clock private network is deployed on the optical transport network, the deployed OTN service private network is not modified, the 1588v2 clock private network can be deployed and 1588v2 clock data can be transmitted without interruption and without affecting the OTN service private network which normally operates on site, so that manpower, material resources and financial resources can be greatly saved, the deployment efficiency of the 1588v2 clock private network is improved, the network stability is increased, service interruption caused by the deployment of the 1588v2 clock private network by using the service board card S6 is avoided, the method has great significance for safety production, and the economic benefit of the OTN network is improved.

When a 1588v2 clock is deployed on an optical transport network where services are deployed and opened, service data between OTN devices S9 and 1588v2 clock data are forwarded and transmitted via different physical links (a service transmission path and a clock transmission path) by using different boards (a service board S6 and a clock board S5) and different communication cables S3 (a service cable S7 and a clock cable S8), respectively. The normal service data of the OTN network is transmitted through the service board card S6 and the service optical cable S7. The 1588v2 clock data are transmitted to a clock board card S5 through a 1588v2 clock source device S2, and are transmitted to a 1588v2 clock receiving device S1 through a clock board card S5.

Furthermore, the clock board S5 is powered by the power supply system of the OTN device S9. The 1588v2 clock private network is deployed under the condition that normal service data forwarding of the OTN is not interrupted and affected, and resources such as a machine frame S4, a power supply system and spare slots of the existing OTN equipment S9 are fully utilized, so that manpower, material resources and financial resources can be greatly saved, the network stability is improved, and the deployment efficiency of the 1588v2 clock private network is improved.

Further, OTN device S9 hardware adopts a frame device framework of a frame S4 and a service board S6, OTN device S9 and a communication optical cable S3 form an OTN network, OTN device S9 and OTN device S9 are interconnected by using an optical interface and a communication optical cable S3, and N OTN devices S9 may form an OTN network by adopting a star, ring, chain, or mesh topology. The whole system can have N OTN devices S9, X1588 v2 clock source devices S2, and Y1588 v2 clock receiving devices S1. 1588v2 clock source device S2 and OTN device S9 are interconnected by an optical interface and communication optical cable S3, OTN device S9 and 1588v2 clock receiving device S1 are interconnected by an optical interface and communication optical cable S3, and clock board card S5 is interconnected by an optical interface and clock optical cable S8.

The service data carried on the OTN device S9 is transmitted through the OTN service board card S6, and the cards between the OTN service boards are interconnected by using an optical interface and a communication optical cable S3 as required.

The OTN devices S9 all need to configure a clock board S5 in an empty slot of a subrack S4, each OTN device S9 starts a 1588v2 clock protocol processing and forwarding function through supporting software, the 1588v2 clock source device S2 transmits 1588v2 clock data to the clock board S5 through a relevant protocol, the OTN devices S9 transmit 1588v2 clock data in sequence through the clock board S5, a clock optical cable S8 and the relevant transmission protocol, the 1588v2 clock data are transmitted to a 1588v2 clock receiving device S1 through the clock board S5, and the 1588v2 clock receiving device S1 can receive 1588v2 clock signals sent by a 1588v2 clock source device S2 at this time. The clock boards S5 are interconnected as required by optical interfaces and clock cables S8. The clock optical cable S8 used by the clock board S5 and the service optical cable S7 used by the OTN service board S6 should be different optical cable links.

Further, the service cable S7 and the clock cable S8 are both part of the communication cable S3 and are subordinate to the communication cable S3.

While the specification concludes with claims defining exemplary embodiments of particular structures for practicing the invention, it is believed that other modifications will be made in the spirit of the invention. While the invention has been described in connection with what is presently considered to be the preferred embodiment, it is not intended to be limited to the disclosed embodiment.

Various alterations and modifications will no doubt become apparent to those skilled in the art after having read the description. Therefore, the appended claims should be construed to cover all such variations and modifications as fall within the true spirit and scope of the invention. Any and all equivalent ranges and contents within the scope of the claims should be considered to be within the intent and scope of the present invention.