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Information forwarding method in opportunity network based on node excitation

An information forwarding and node technology, applied in wireless communication, energy-saving ICT, advanced technology, etc., can solve problems such as routing mechanism not working properly, network performance degradation, etc., to improve message delivery rate, reduce energy consumption, and reduce message delivery time. delayed effect

Active Publication Date: 2013-04-03
重庆信科设计有限公司
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  • Description
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Problems solved by technology

[0007] The problem to be solved by the present invention is: the selfish behavior of nodes causes the existing routing mechanism to fail to work normally, thereby causing network performance degradation

Method used

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  • Information forwarding method in opportunity network based on node excitation
  • Information forwarding method in opportunity network based on node excitation
  • Information forwarding method in opportunity network based on node excitation

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Embodiment Construction

[0021] The implementation of the present invention will be specifically described below in conjunction with the accompanying drawings and specific examples.

[0022] like figure 1 Shown is the flowchart of the node incentive algorithm based on the buying and selling model in resource-constrained opportunistic networks. It mainly includes the following steps, obtaining network environment attributes; establishing a buying and selling model; node message forwarding.

[0023] figure 2 Construct a schematic for the environment properties. The present invention mainly considers the following attributes including: node's remaining resource, node's wealth and message attribute.

[0024] 1) Obtain the remaining resources of the node. The remaining resources of the node are the resources owned by the node at the current moment, including the free cache space of the node and the remaining energy of the node. The former is expressed by the percentage of remaining space, and the latte...

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Abstract

The invention discloses an information forwarding method in a resource-constrained opportunity network based on node excitation, aiming at solving the problems of node blind cooperation and the like of the existing node excitation which fails to take occupation and energy consumption of node cache in the network into consideration. According to the information forwarding method disclosed by the invention, a pricing foundation is set by taking idle cache space, rest energy and owned monetary value on the node as well as size and rest survival time of the message into comprehensive consideration. Hereby, the node, as a rational entity, is scientifically described, and with variation of an environment attribution and variation of cooperative willingness, and depending on an instinct of seeking for owned benefit maximization of the node, rational excitation node cooperation is achieved. Furthermore, when the rest energy of the node is rare, the network service life of the node can be prolonged; and when the idle cache space of the node is comparatively small, the method is favorable for relieving the network jamming, so that the energy consumption can be effectively reduced, and the network average transmission delay and delivery rate can be improved.

Description

technical field [0001] The invention relates to opportunistic networks, in particular to node information forwarding in opportunistic networks. Background technique [0002] Opportunistic networks are widely used in network scenarios such as vehicle communication, deep space communication, and environmental monitoring. Unlike traditional networks, in opportunistic networks, there is no reliable end-to-end path between the source node and the destination node of the message. The routing mechanism of opportunistic networks mainly relies on the cooperation of mobile nodes and works in a "store-carry-forward" mode. However, due to the limited resources (including energy and cache) of nodes in opportunistic networks, in order to save resources, nodes will refuse to help other nodes forward messages. This selfish behavior makes the existing routing mechanism unable to work normally, which leads to the degradation of network performance. Therefore, node selfishness in opportunis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/04H04W52/02
CPCY02B60/50Y02D30/70
Inventor 刘期烈于季弘李云曹傧
Owner 重庆信科设计有限公司
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