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SDN-based high-precision time-frequency synchronization network

A time-frequency synchronization, high-precision technology, applied in the selection device of multiplexing system, wavelength division multiplexing system, electrical components, etc., can solve the problem of time-consuming and laborious, and achieve flexible network construction, convenient management, and network response. quick effect

Active Publication Date: 2022-06-07
BEIJING UNIV OF POSTS & TELECOMM
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In the above technical solution, the time-frequency synchronization path in the synchronization network is planned when the network is established. The update of the synchronization path can only be realized by changing the status of the optical switch in each node respectively, and the entire network route needs to be re-planned. very time-consuming

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  • SDN-based high-precision time-frequency synchronization network

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Embodiment Construction

[0014] The present invention is further elaborated in the accompanying drawings.

[0015] The present invention is based on SDN high-precision time-frequency synchronous network, a three-layer structure, such as Figure 1 as shown, from top to bottom, the management plane, the control plane, and the time-frequency plane are respectively.

[0016] The management plane is used to generate time-frequency synchronization requests between network nodes; The management plane contains a variety of SDN-based high-precision time-frequency synchronization network network management applications, and managers can manage the time-frequency synchronization network without caring about the underlying details, including generating time-frequency synchronization requests between network nodes, setting the synchronization priority of network nodes, querying the status of network nodes, and issuing network update commands.

[0017] The control plane is composed of several SDN controllers, which grasp ...

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Abstract

The high-precision time-frequency synchronization network based on SDN in the present invention includes a management plane, a control plane, a data plane and a time-frequency plane from top to bottom. The management plane mainly realizes the following two functions: First, the management plane can manage and configure the SDN controller in the control plane, including configuring controller parameters, updating the switch internal flow table through the controller, inserting and updating various control algorithms, etc. , so that the network can realize specific functions according to the requirements; secondly, the management plane can actively send a synchronization request to the SDN controller, telling the controller the two nodes that need to be synchronized, and the controller executes the time-frequency synchronization process according to the request. The control plane is composed of SDN controllers, which are mainly responsible for routing selection, resource allocation and device configuration of the data plane and time-frequency plane. The data plane and the time-frequency plane are respectively responsible for data transmission and time-frequency synchronization. The invention can realize centralized control, and can arbitrarily change the characteristics of the network according to requirements.

Description

Technical field [0001] The present invention relates to optical fiber communications, precision measurement field, specifically an SDN-based high-precision time-frequency synchronous network. Background [0002] The patent "High-precision Optical Fiber Time-Frequency Signal Synchronization Network" proposes a high-precision optical fiber time-frequency signal synchronization network. The network node includes a time-frequency signal source and a high-precision optical fiber time-frequency signal synchronization network switch, each network node is connected to the other two network nodes through at least two optical fiber links, and then through the optical fiber link delay measurement and control transmitter and receiver to achieve fiber link stability and measurement, through the time-frequency signal transmitter and receiver to achieve time-frequency signal transmission, through the main control board and switch to achieve network routing optimization and protection inversion,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04J14/02
CPCH04Q11/0062H04J14/0227H04Q2011/0045
Inventor 陈星罗斌喻松曹义尧
Owner BEIJING UNIV OF POSTS & TELECOMM