Cooperative spectrum sharing game method for cognitive radio system

A cognitive radio and spectrum sharing technology, applied in wireless communication, electrical components, network planning, etc., to achieve effective and fair distribution and achieve the effect of reasonable configuration

Inactive Publication Date: 2011-09-14
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Obviously, the static spectrum allocation strategy implemented in the past has become a bottleneck with the rapid development of communication technology

Method used

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  • Cooperative spectrum sharing game method for cognitive radio system
  • Cooperative spectrum sharing game method for cognitive radio system
  • Cooperative spectrum sharing game method for cognitive radio system

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Embodiment Construction

[0029] Using game theory to analyze problems is to choose a suitable combination of decisions, so that each participant's decision is the optimal response to the decisions of other participants, and achieve Nash equilibrium to achieve overall optimality.

[0030] In recent years, with the rapid increase in the number of wireless users and wireless multimedia applications, more and more wireless devices are widely used, various wireless technologies have been developed at an unprecedented rapid rate, and wireless communication rates have increased to tens of megabytes or even higher. With hundreds of megabits per second, wireless communication systems have an increasing demand for spectrum resources. Because of this, spectrum resources are becoming scarcer and become the most important non-renewable resource in modern society. What we have to do is to find a fair and effective method to improve the utilization of spectrum resources. Therefore, spectrum resources have become the mai...

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Abstract

The invention aims to provide a cooperation-based spectrum sharing game method for a cognitive radio system. The method relates to game-theory-based spectrum allocation in a cognitive radio technology, and is a realization scheme for solving the problem of insufficient spectrum resources in the cognitive radio system and improving the spectrum utilization rate. In the method, a signal to interference ratio of a secondary user is taken as a parameter, a utility function of the secondary user is constructed by adopting a Nash bargaining algorithm in a cooperative game theory, a spectrum cost mechanism and priority parameters of spectrums for which the secondary user competes are introduced, and a cooperative spectrum sharing game model is established. By the method, the problem of spectrum competition of a plurality of secondary users can be solved, the rational configuration of system resources is realized, and moreover, the effective and fair allocation of the spectrum resources is realized by adopting the Nash bargaining algorithm in the cooperative game theory.

Description

Technical field [0001] The invention relates to an implementation scheme especially used for effective utilization of spectrum resources in cognitive radio technology, and belongs to the field of communication technology. Background technique [0002] As we all know, the radio frequency spectrum is a precious natural resource, which is generally authorized for use by the government. The spectrum resource allocation method defined in the early days is static, and different communication systems can only work on authorized dedicated frequency bands. With the rapid development of wireless communication technology, more and more wireless devices are widely used, and spectrum resources have gradually become scarce, which has become the most important non-renewable resource in modern society. Especially in recent years, many users have begun to access the Internet through technologies such as wireless local area network (WLAN) and wireless personal area network (WPAN) that work in unl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/10H04W16/14
Inventor 朱琦马良赵夙
Owner NANJING UNIV OF POSTS & TELECOMM
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