A Multi-user Cooperative Communication Encouragement Method in Dual Information Asymmetric Network Environment

Abstract

The invention belongs to the field of wireless cooperative communication system technology, and particularly relates to a multi-user cooperative communication incentive method in a dual information asymmetric network environment. The method comprises the following steps: mapping a cooperative communication network into a labor market, and establishing a source node model and a relay node model in combination with the characteristics of a market-driven contract theory; and in consideration of the selfish nature of the relay nodes and the constraints of individual rationality, establishing a multi-user cooperative communication incentive optimization model in the dual information asymmetric network environment for the adverse selection problem caused by the private information of the relay nodes before contract signing and the moral hazard problem caused by private behaviors of the relay nodes after contract signing. Thereby, the dual objectives of achieving cooperative information screening and cooperative effort incentive of the relay nodes can be realized, the win-win situation of benefits can be realized, and the implementation of cooperative communication can also be ensured.

Description

technical field [0001] The invention belongs to the technical field of wireless cooperative communication systems, and in particular relates to a method for stimulating multi-user cooperative communication in a double information asymmetrical network environment. Background technique [0002] The rapid development of wireless communication technology has made the problem of shortage of spectrum resources increasingly severe, which has become a bottleneck restricting the development of wireless communication. Cooperative communication technology can effectively improve the utilization rate of wireless spectrum by means of cooperative relay between wireless nodes. However, in the actual cognitive network and cooperative wireless network, the phenomenon of asymmetric network information generally exists, which makes it quite difficult to select a suitable relay node with good channel state and high communication ability among many relay nodes. [0003] Due to the asymmetry of ...

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Problems solved by technology

This asymmetry in ability levels creates an adverse selection problem

On the other hand, in the process of cooperative communication, due to the asymmetry of information, the source node cannot know the cooperative effort level of the relay node, and the relay node may act unfavorable to the source node out of self-interest, such as being lazy, etc. behavior, that is, there is a moral hazard problem

[0004] The research on cooperative communication technology under the condition of asymmetric information is attracting the attention of researchers. Among them, the research on cooperative incentive strategies based on contract theory has just started. The choice problem, less attention has been paid to the moral hazard problem caused by the information asymmetry of the relay user's communication effort behavior

In addition, the cooperative relay capability of relay nodes and the information asymmetry of efforts are often concurrent, and there are no reports and researches on the incentive problem of multiple relay nodes in the network environment with dual information asymmetry at home and abroad.

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