异构网络资源分配:改进多对一转移匹配

Resource allocation in heterogeneous network networks:Modified many-to-one swap matching

随着无线业务的急剧增长,短缺的频谱资源正面临着巨大挑战。采用无线异构网络被视作解决此问题,提高频谱利用率的一种有效手段。但是,由于宏蜂窝和微蜂窝共享相同频谱资源,同层和跨层干扰非常严重,这时如何合理进行资源分配成了一个棘手的问题。针对该问题,根据匹配理论提出了一种改进多对一转移匹配算法进行资源分配。该算法在满足交换条件下,通过微蜂窝用户不断地交换其匹配资源,最终形成稳定转移匹配。仿真结果表明,所提改进转移匹配算法较传统转移匹配算法和改进Gale-Shapley匹配算法性能更易收敛到最优解,同时提高了频谱利用率,降低了计算复杂度。

With the rapid increase of wireless service,applying wireless heterogeneous network is considered as a promising technique to solve this problem and increase the resource utilization rate.However,it is difficult to achieve rational spectrum resource allocation when macro-cellular users and femto-cellualr users exist in a network which will introduce the serious cross-interference and inter-interference.To solve this problem,a modified swap matching algorithm based on stable matching theory is proposed to allocate the resource.In the algorithm,femto-cellualr users continuously exchange there matched resources under the given conditions,and reach a stable swap matching finally.Simulation results show that the given modified swap matching algorithm can achieve a better solution than traditional swap matching algorithm and the modified Gale-Shapley matching algorithm and increase the resource utilization rate with a lower computation complexity.