摘要： 现有基于效用的无线网络资源分配方法大多未考虑网络整体效用最优的问题，只关注基站内的资源分配最优化，没有将基站选择问题与基站内资源分配问题相结合。鉴于此，提出一种基于效用的多基站协作无线资源分配方法，将无线网络资源分配划分为2个阶段，即基于拥塞度选择基站与基于边际效用实现基站内的资源分配。仿真实验结果表明，在268次基站选择中，该方法与效用最优的基线方法有218次相同，占81.3%，但其平均用时只有0.066 s，远低于基线方法的0.926 s，从而验证了该基站选择方法的合理性，以及基站内资源分配方法的有效性和高效性。
关键词:
效用,
效用函数,
边际效用,
无线网络,
资源分配,
多基站协作
Abstract: Most utility based wireless resource allocation methods only focus on the optimal allocation within a base station. Because of ignoring the issue of base station selection, these methods can not achieve the optimal utility of whole network. Therefore, this paper proposes a utility based multi-base-station cooperation wireless resource allocation method, which is divided into two stages. In the first stage, base stations are selected according to their congestion degree. And in the second stage, the resource in each base station is allocated according to marginal utility. The simulation experiments show that, between the approach and the baseline method, of all the 268 base station selections there are 218 accounting for 81.3% having the same selection result and the average elapse time of the proposed method is only 0.066 s, which is much lower than the baseline method 0.926 s. These facts show the rationality of the base station selection method as well as the efficiency and effectiveness of the resource allocation method.
Key words:
utility,
utility function,
marginal utility,
wireless network,
resource allocation,
multi-base-station cooperation
中图分类号: