关键词: 机会网络, 自私行为, 激励策略

Abstract: With the progress and development of science and technology, full popularity of the mobile network equipment, the demand for a rapid, stable and higher coverage network is increasingly higher. Opportunity network as a supplement of future multi-network, it is able to work in harsh environments, which plays an important role in the network optimization. Most of the existing routing strategies are based on the full cooperation between nodes in opportunistic network, however, due to the limited resources of the node, it is more likely to show its selfish behavior when the node as a relay, such as denying participation in data forwarding, discarding forwarding information and so on. Therefore, how to reduce the impact of node selfish behavior on network performance has increasingly become the focus of research. In this paper, firstly, it introduces the generation and detection of selfish nodes and its impact on network performance, analyzes the importance of node selfish behavior to the opportunity network, then, the existing three kinds of incentive schemes are described, also, the typical incentive strategies in each scheme are introduced in detail, the advantages and disadvantages of each strategy are analyzed, finally, do a comparative study on three types of schemes, and giving a future research direction of the proposed and prospects.

Key words: opportunistic networks, selfish behavior, incentive mechanism