Free space optical fiber communication network routing method and device under delay tolerant network

A delay-tolerant network, free space technology, applied in optical fiber transmission, data exchange network, digital transmission system, etc., can solve the problems of atmospheric channel instability, low transmission success rate, etc., to break through the limitation of time and space, The effect of ensuring communication quality and high delivery success rate

Active Publication Date: 2021-04-20
STATE GRID CORP OF CHINA +2
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Problems solved by technology

However, in free space optical fiber communication, the atmospheric channel is unstable, resulting in a low final transmission success rate

Method used

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  • Free space optical fiber communication network routing method and device under delay tolerant network
  • Free space optical fiber communication network routing method and device under delay tolerant network
  • Free space optical fiber communication network routing method and device under delay tolerant network

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Embodiment Construction

[0039] The present invention will be further explained in detail below in conjunction with the accompanying drawings and specific embodiments, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0040] The first step is to establish a mathematical model of the atmospheric channel

[0041] The terminal of optical communication mainly includes laser transceiver system and optical antenna. Under the delay-tolerant network, the related equipment of free space optical fiber communication network mainly includes laser transmitter, receiver, communication control system, APT system, and completes the transmission of information through the atmospheric channel. and receive.

[0042] Because there will be some fog, rain, snow and small particles of sand and dust in the atmospheric channel from time to time, the laser beam will be scattered and absorbed, and the laser light intensity will be attenuated. In addition...

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Abstract

The invention relates to a free space optical fiber communication network routing strategy method under a delay tolerant network, which comprises the following steps: establishing an atmospheric channel mathematical model which is used for describing the influence of atmospheric turbulence and laser attenuation on an atmospheric channel; generating a delay tolerant network topological structure, setting the delay tolerant network topological structure by adopting a layered structure, performing information transmission by utilizing an atmospheric channel of free space optical fiber communication, setting a cluster head node and at least one cluster head member in each layer of structure, and forwarding and receiving information of the cluster head members through the corresponding cluster head nodes; optimizing routing. According to the method, the defects of a free space optical fiber communication network can be effectively overcome, the maximum round-trip time between nodes is prolonged, and the packet loss rate is reduced.

Description

technical field [0001] The invention relates to a routing setting method and device, in particular to a routing strategy method and device for a free-space optical fiber communication network under a delay-tolerant network. Background technique [0002] Free space optical fiber communication (FSO) technology has developed rapidly in recent years. It has large bandwidth, low price, good confidentiality and networking flexibility. FSO technology mainly uses laser signals to complete information transmission in the atmosphere and vacuum environment. And there is no need to lay optical fibers, and the simple antenna erection can meet the communication requirements. In optical fiber communication, a complete communication routing path needs to be established between the source node and the destination node, but the wireless communication distance between routing nodes affects the quality and efficiency of communication. Therefore, the routing strategy of optical fiber communicati...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/25H04L12/721
CPCY02D30/70
Inventor 李磊何涛饶强詹鹏汤弋周正孙俊陈璞闫生超巢玉坚贺易叶露杨硕张锦华李静茹王俊曦焦翰琳代静周德坤陈家璘马远东赵世文周浩波赵晓炜蔡新忠田崇军钟震坤胡志刚
Owner STATE GRID CORP OF CHINA
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