Optical burst switch network based burst packet dispatching system and method

Abstract

The invention relates to a burst pack sending system based on light burst exchange network, comprising a service data pack receiving and information extracting module, a burst pack generating and information maintaining module, a SDRAM controller, and a burst pack buffer and un-sent burst pack information receiving processing module. The inventive also relates to a burst pack sending method based on light burst exchange network, comprising that writing service data and description information into the buffer, assembling service data into a burst pack, to be stored into a SDRAM via the SDRAM controller, when reaches pack length or time threshold value, sending the burst pack description information to a distribution chip, when receives the sending signal of the distribution chip, reading the un-sent burst pack from the SDRAM into the burst pack buffer, when reaches sending time, converting the burst pack into a light burst data pack to be sent to a target address. The invention respectively stores data and description information, to avoid multiple transfers and operations on the data of service data pack, to improve assembly efficiency.

Description

technical field [0001] The present invention relates to the technical field of optical burst switching, in particular to a burst packet transmission based on an optical burst switching network that quickly and efficiently classifies and assembles service data packets, buffers burst packets with a large capacity, and sends burst packets at precise timing system, and a burst packet sending method based on the burst packet sending system. Background technique [0002] With the continuous expansion of the scale of the Internet and the emergence of emerging services, the Internet network business has entered a period of rapid growth. Due to the diversity and variability of services, the traditional core switching network has been difficult to adapt to the needs of Internet development. In order to solve this problem, optical network technology was born. At present, optical network adopts static or dynamic wavelength routing, that is, Optical Circuit Switching (OCS) mechanism. The...

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Problems solved by technology

[0006] This assembly method using network processors needs to take out the data from the physical layer chip, and then cache it twice in SDRAM or cache it once in SDRAM and maintain a burst packet list. Both methods are relatively inefficient. , at the same time, the network processor's ability to control the hardware is not strong, and the real-time performance is not enough. It is easy to cause congestion when sending burst packets, and it is difficult to send compactly. It must be connected with an external cache to achieve the purpose of precise timing sending.

In addition, this method is inflexible to the configu

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