Optical burst transport network node time slot synchronization training method, node equipment and network

Abstract

Disclosed in the present invention are a time slot synchronization training method for an optical burst transport network node, node device and network. The method includes: a reference time delay between a receiving control frame and a receiving data frame is trained by the node, wherein the data frame and the control frame are in the same period; and time slots for sending adjacent data packets in the data frame are trained by the node.

Description

technical field [0001] The present invention relates to the technical field of optical networks, in particular to a training method, node equipment and network for node time slot synchronization of Optical Burst Transport Network (OBTN, Optical Burst Transport Network). Background technique [0002] OBTN is a granular optical transmission technology based on optical circuit switching (OCS, Optical Circuit Switching) and optical packet switching (OPS, Optical Packet Switching). Channels are separated from data channels. The data channel adopts the all-optical switching technology based on the data frame based on the optical burst (OB, Optical Burst) as the switching unit, while the control frame and the data frame in the control channel correspond one-to-one, and are also transmitted in the optical domain, but in the node is converted to circuit domain processing to receive and update corresponding control information. It is understandable that there can be more than one da...

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Problems solved by technology

[0003] However, in the current OBTN technology, the use of FDL will bring high costs. At the same time, such a time slot synchronization method is not simple. It is necessary to make the fiber distance between adjacent nodes fixed, and the distance relationship between the control channel and the data channel fixed. It is very difficult to build and adjust when the network ring length changes

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