基于效用理论的多标拍卖信道分配算法

针对传统多标拍卖信道分配机制无法确保认知用户获得频谱资源公平性的问题,结合微观经济学中的效用理论提出了一种新的标价算法。该算法基于用户自身带宽需求和等待时间等因素对信道效用的影响,以信道效用为基准对信道进行等效标价处理,确保在系统效益最大的同时可获得频谱资源认知用户数量容纳性的最大化。对采用该算法与采用传统算法的系统中用户等待时间、需求满足情况及系统总体效益等关键技术性能在频谱资源充足与频谱资源匮乏两种情况下进行了仿真对比分析,结果显示该算法不仅能够在频谱资源充足时获得较好的系统效益,在频谱资源匮乏时能够在保证系统效益的同时大大提高了弱势用户获得频谱资源的概率,提高系统的公平性。

An Algorithm on Multi-Bid Auction Channel Allocation Based on the Utility Theory

Aimed at the problems that the conventional channel allocation mechanism based on multi-bid auction fails to ensure the fairness for cognitive users in using spectrum, this paper proposes a new price mark algorithm based on the theory of utility in microeconomics. This new algorithm takes the effect of the requirement of users'' actual bandwidth and waiting time on channel utility into account, and then prices channels equivalently taking the channel utility as a standard to maximize the efficiency of system as well as the numbers of cognitive users who can access this system. The simulation and analysis on the overall efficiency of the system and other key technologies of the systems are carried out by using this algorithm and the traditional algorithm out. The results show that the algorithm can not only get good system efficiency in the case that spectrum resource is sufficient, but also can greatly improve the probability of the disadvantaged users to obtain spectrum resources with good system efficiency, and can improve the system fairness in spectrum resource scarcity.