【作者】 李萍； 王晓湘；

【Author】 Li Ping Wang Xiaoxiang Information School Beijing University Of Posts and Telecommunications 100876

【机构】 北京邮电大学信息工程学院；

【摘要】 在无线通信系统中,带宽是非常有限的资源,所以如何进行合理的分配是资源调度中至关重要的问题。比例公平(PF)调度算法已经在无线通信系统中得到广泛研究,它根据用户已经获得的资源情况选择当前被服务的用户,使用 PF 算法进行调度可以向用户提供平等的服务机会。但是,在传统的 PF 算法中,获得较少资源的用户可能在当前信道状态差的情况下被调用。为解决这个问题,我们提出一种改进的 PF 算法,在调度中提高处于较好信道状态下用户被服务的机会,同时降低处于较差信道状态下用户被服务的机会,并通过仿真验证改进的 PF 算法可以在不降低公平性的条件下提高系统的吞吐量。更多还原

【Abstract】 It is crucial to allocate and manage the resources in wireless system because the spectrum is very scarce. Traditional Proportional Fair(PF)scheduling scheme has been proposed to solve unfairness of assignment in wireless network,and the aim is to provide familiar opportunity to be served for users.It usually selects users by considering the allocated resource in the past.However,a user with a low average rate but a low instant rate may be selected to be served at the moment.To deal with this problem,we propose a peak rate sensitive scheduling scheme to optimize the traditional PF scheduling scheme by changing the distribution of the rate values of selected users. Under this scheme,system throughput will be advanced without reducing the fairness among the users.更多还原