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Internet of ships block data transmission method based on receiving probability sliding window

A receiving probability and sliding window technology, applied in the field of ship network communication, can solve the problems of high transmission success rate, low network redundancy, and consumption of network resources

Inactive Publication Date: 2019-10-25
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing opportunistic network routing algorithms have their own limitations, such as the Epidemic algorithm, each node forwards data packets to all encountered relay nodes, resulting in a large number of copies in the network, consuming a large amount of network resources, and the Direct Delivery algorithm The data packet is forwarded only when it encounters the destination node, which is likely to cause a huge data transmission delay
Existing opportunistic network routing algorithms cannot simultaneously meet the requirements of high transmission success rate, large amount of transmitted data, and low network redundancy, and are suitable for maritime scenarios

Method used

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  • Internet of ships block data transmission method based on receiving probability sliding window
  • Internet of ships block data transmission method based on receiving probability sliding window
  • Internet of ships block data transmission method based on receiving probability sliding window

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Embodiment Construction

[0043] Variable definitions:

[0044] When node A carries a piece of data sent to node C and meets node B, node A is the sending node, node B is the relay node, and node C is the destination node. The communication radius of nodes A, B, and C are respectively R A , R B , R C , D is the distance between node A and node B.

[0045] P (A,C) Is the meeting probability of nodes A and C, stored in the meeting probability table of node A; P (B,C) It is the meeting probability of node B and C, which is stored in the meeting probability table of node B. P (A,B)old It is the meeting probability of nodes A and B, and is stored in the meeting probability table of nodes A and B.

[0046] The threshold of the probability of successful reception is T, and the data block that node A forwards to node B for the first time is the xth block of data to be forwarded.

[0047] The present invention will be described in detail below with reference to the figures.

[0048] Such as figure 1 As shown, when...

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Abstract

The invention belongs to the technical field of Internet of ships communication, and relates to an Internet of ships block data transmission method based on a receiving probability sliding window. Themethod is characterized in that a message is forwarded to a relay node only when the encountering probability of the node and a destination node is smaller than the encountering probability of the relay node and the destination node. The to-be-sent data is sent in the form of a data block in the form of a sliding window, and the to-be-sent data is deleted from the sliding window only when the successful sending probability exceeds a certain threshold, otherwise, the to-be-sent data still waits for the subsequent encountered relay node to continue to be forwarded, so that the success rate of data forwarding is improved. The method can be used in a scene of offshore large-data-volume remote transmission, and can be used for an ocean volunteer ship to carry out data storage-carrying-forwarding.

Description

Technical field [0001] The invention belongs to the technical field of ship networking communication, and relates to a ship networking block data transmission method based on a receiving probability sliding window. Background technique [0002] Intelligent transportation system is the development direction of transportation system in the future. Internet of Vessels (IOV) is one of the emerging concepts with important exploratory nature, so its related research has certain theoretical value and practical significance. [0003] The existing ship networking structures are diverse and decentralized, and most related researches draw on the Internet of Vehicles. There is a lack of fixed communication base stations in the marine environment, and most of the information generated by ships during navigation relies on satellite communications, but satellite communications are expensive and only suitable for the transmission of more urgent and small amounts of information. The information wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/42H04W28/02H04W40/22
CPCH04W4/42H04W28/021H04W40/22
Inventor 崔学荣齐琪琪李娟李忠伟刘建航李世宝张勇江垚乐
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)