A Node Detection Method Based on Currency Information in Opportunistic Networks

Abstract

The invention relates to a node detection method based on currency value information in an opportunistic network, which belongs to the technical field of communication. This method is aimed at the opportunistic network, the selfish behavior of nodes leads to the failure of the existing routing mechanism, resulting in the degradation of network performance, and the existing incentive algorithm based on virtual currency has many limitations, and cannot detect nodes holding a large number of virtual currency The selfishness of the network causes the existence of these selfish nodes, and the incentive algorithm does not substantially encourage the cooperation between nodes. Through a node detection strategy based on the virtual currency incentive mechanism, it is mainly after the virtual currency payment strategy has been running for a period of time. , through the periodic detection of active nodes, it is judged whether these active nodes have preference selfishness, and the active nodes with preference selfishness are punished and their service level is lowered, so as to reasonably motivate the cooperation between nodes and effectively Maximize the average transmission delay and successful delivery rate of the network.

Description

Technical field [0001] The invention belongs to the field of communication technology, and relates to an incentive algorithm for selfish nodes in an opportunity network, and in particular to a node detection method based on currency information in an opportunity network. Background technique [0002] Opportunistic networking (ON) is different from traditional mobile Ad-hoc networks (MANET). The message transmission between nodes in the network does not require a complete communication path. The communication between nodes is through each other. The mutual forwarding is completed. The message transmission between nodes in the opportunistic network adopts the "store-carry-forward" mode, which brings huge application potential and challenges to the opportunistic network. [0003] At present, a large number of experts and researchers have devoted themselves to the related research of opportunistic network. Among them, the research of opportunistic network-related routing mechanism has...

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Problems solved by technology

[0005] However, the above incentive strategy based on virtual currency payment has many shortcomings: the incentive mechanism based on virtual currency requires nodes to complete the forwarding service by paying a certain amount of virtual currency, which requires a trusted third-party trust mechanism in the network, and in The construction of network topology in this strategy needs to assume that nodes have global knowledge, which is obviously difficult to achieve in delay-tolerant opportunistic networks

In addition, the virtual currency-based incentive mechanism only deals with the initial node selfishness, and does not supervise and manage the selfish preference of later active nodes, which makes the existence of rich nodes with selfish preferences in the network, resulting in network performance. decline

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