Delay tolerant network congestion prevention method based on data concurrence and forwarding by token control node

A delay-tolerant network and control node technology, which is applied in the field of delay-tolerant network congestion avoidance based on token control nodes for concurrent data forwarding, can solve problems such as busy nodes, affecting network performance, and limited number of tokens, and achieve congestion avoidance and high efficiency. Forwarding, the effect of good scalability

Active Publication Date: 2015-11-18
HARBIN ENG UNIV
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Problems solved by technology

This method can effectively avoid network congestion, but due to the limited number of tokens, it is easy for nodes to be busy, so data transmission is limited. At the same time, the addition or withdrawal of network nodes will cause the number of tokens to not match the number of nodes, thus affecting network perfor

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[0028] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0029] combine figure 2 , the present invention is realized in this way:

[0030] Step 1: Group the nodes in the network according to the geographical location and the density of the nodes in the network. The division according to the geographical location between the nodes refers to the division according to the geographical distance, and the neighbor nodes are divided into a group; the nodes in each group are divided into groups. The number is N, N∈N + , 0

[0031] Step 2: Set the period of dynamic token allocation in the network T=2t(L+1), where L is the maximum number of nodes allowed in the group, and 2t is the longest forwarding data that a single node has after the node obtains the token time.

[0032] Step 3: According to the DTN node grouping numbering method,

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Abstract

The invention provides a delay tolerant network congestion prevention method based on data concurrence and forwarding by token control nodes. The method includes the steps: grouping network nodes, dynamically distributing a token through periodicity, dividing the grouped nodes according to priority, and enabling the nodes in the groups to carry out data concurrence and forwarding through a token distribution scheme based on timeslice cycling. Therefore, network congestion is prevented by increasing node data forwarding conditions.

Description

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Claims

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Application Information

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Owner HARBIN ENG UNIV
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