基于Femtocell网络的时域资源划分

为了满足数据流量增长的需求,在LTE蜂窝系统中引入家庭基站.家庭基站能够分担宏蜂窝的数据流量,与此同时,也给蜂窝系统带来了较大干扰,这些干扰大大影响了用户的通信质量.为解决此问题,提出一种基于家庭基站网络时域资源划分方案(F-MFTR),此方法把时域资源划分与软频率复用技术(SFR)结合起来,边缘用户通过最优化方法寻找最佳的功率段,未参加调度的用户在小区之间形成“隔离带”,在理论上保证了边缘用户与系统中其他用户之间不存在干扰.此外,所有的用户可以在全频段上搜索最佳的资源块,能够提升用户的通信质量.仿真表明,这种方法能大大提升系统的吞吐量.

Resource Allocation Based on Fractional Time Reuse for Femtocell network

To handle huge data traffic in networks,The LTE brings in Femtocell to cope with the demand.Femtocells can efficiently offload the traffic of macrocell.At the same time,it also brings great interference to the cellular system,which greatly affect the communication quality of users.In order to solve this problem,this paper proposes a resource allocation scheme for Femtocell network based on Modified Fractional Time Reuse(F-MFTR).This method combines time reuse with soft frequency(SFR).The edge users searche for the optimal power segment by the optimization method.The edge users without scheduling can be regard as isolation strip.Those ensure there is no interference between users.In addition,all users can search for the best resource block in the whole frequency band,which can improve the communication quality.Simulation results show that this method can greatly improve the throughput of the system.