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为解决家庭小区(Femtocell)共频部署带来严重的同层干扰问题,提出一个具有QoS(Quality of Service, 服务质量)保证的全分布式比例资源分配算法。该算法在利用博弈论最小化干扰的基础上,设计了一个分配减半策略和一个概率放弃策略。分配减半策略根据用户需求以及网络中有限的可用资源为用户进行相应分配。概率放弃策略使干扰小区基于概率放弃相应资源以减少干扰。仿真结果表明,该算法保证了家庭小区间资源分配的公平性,提高了频谱复用效率和收敛性。该算法在当前蜂窝网中不增加任何额外信息交换的情况下,为家庭小区的部署提供了简单有效的方案支持。
To solve the problem of severe co-channel interference caused by the co-frequency deployment of Femtocell, a distributed resource allocation algorithm with QoS (Quality of Service) is proposed. Based on the minimization of game theory, this algorithm designs a strategy of halving allocation and a strategy of giving up probability. Allocate a halving strategy to allocate users to users based on their needs and the limited available resources in the network. The probability abandonment strategy makes the interfering cell abandon the corresponding resource based on the probability to reduce the interference. Simulation results show that this algorithm ensures the fairness of resource allocation among home cells and improves the efficiency and convergence of spectrum reuse. This algorithm provides simple and effective scheme support for the deployment of home cells without any additional information exchange in the current cellular network.