Data transmission method, device and system based on optical burst switching network

A technology of data transmission system and optical burst switching, which is applied in the field of satellite communication, and can solve problems such as inability to obtain the first data packet and interruption of network services

Active Publication Date: 2020-06-12
BEIJING UNIV OF POSTS & TELECOMM +2
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  • Abstract
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Problems solved by technology

After the edge satellite node caches the first data packet again, when the size of the data packet received by the edge satellite node is greater than the size of the remaining storage space, the edge satellite node may delete the first data packet again, which may cause the edge satellite node The first data packet is deleted each time, so that the target satellite node cannot obtain the first data packet, which in turn will cause network service interruption

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  • Data transmission method, device and system based on optical burst switching network
  • Data transmission method, device and system based on optical burst switching network
  • Data transmission method, device and system based on optical burst switching network

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Embodiment Construction

[0067] 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 only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0068] In the prior art, due to the limited local storage space of the edge satellite node, when the size of the data packet received by the edge satellite node is greater than the size of the remaining storage space, the edge satellite node may delete the current unencapsulated encapsulation priority The low data packet (may be referred to as the first data packet), and then, the target satellite node may request to acquire the first data packet again. After ...

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Abstract

The embodiment of the invention provides a data transmission method, device and system based on an optical burst switching network. A first edge satellite node in the plurality of edge satellite nodes, the method is based on the currently cached data, wherein each unpackaged data packet respectively corresponds to a service type; and the respective packaging waiting times of each data packet are calculated. Determining respective packaging priorities of the data packets, determining a first number of data packets from the data packets based on the respective packaging priorities of the data packets, performing data packet packaging on the first number of data packets to obtain corresponding burst control packets and burst data packets, and sending the burst control packets and the burst data packets to the core satellite node. And the core satellite node forwards the received burst control packet and burst data packet, and based on the processing, network service interruption can be avoided to a certain extent.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a data transmission method, device and system based on an optical burst switching network. Background technique [0002] The satellite optical burst switching network is composed of edge satellite nodes and core satellite nodes. The edge satellite node can perform data packet encapsulation on multiple data packets received for sending to satellite nodes (may be referred to as target satellite nodes) outside the satellite optical burst switching network, and obtain corresponding BDP (Burst Data Packet, Burst Data Packet) and the corresponding BCP (Burst Control Packet, Burst Control Packet), the BDP contains multiple data packets received, the BCP carries the identity of the target satellite node, and the minimum required for transmitting the corresponding BDP bandwidth. Then, the edge satellite node can send the BCP and BDP to the core satellite node, and then t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04Q11/00H04L12/851
CPCH04B7/18513H04L47/2433H04Q11/0062H04Q2011/0073
Inventor 忻向军刘博张琦李怡嫱高然陶滢田清华田凤张丽佳沈宇飞曹桂兴陈东刘乃金张伟王拥军杨雷静
Owner BEIJING UNIV OF POSTS & TELECOMM
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