超密集网络中虚拟小区载波分配方案研究  

Research on carrier resource allocation schemein UDN

作　　者：刘丹 王凯 谭国平 居美艳 张丽丽 LIU Dan;WANG Kai;TAN Guo-ping;JU Mei-yan;ZHANG Li-li(Institute of Communication and Information Systems,Hohai University,Nanjing 211100,China)

机构地区：[1]河海大学计算机与信息学院通信与信息系统研究所,江苏南京211100

出　　处：《电子设计工程》2018年第15期98-102,107,共6页Electronic Design Engineering

基　　金：科技部国际科技合作项目(2015DFR10560);中国科学院无线传感网与通信重点实验室开放课题(2016001);中央高校基本科研业务费(2015B18914)

摘　　要：超密集网络通常采用以用户为中心的虚拟小区进行组网,因此能保证良好的用户体验。然而虚拟小区组网方案中的资源分配问题极具挑战性,为此本文提出一种基于最大SINR的虚拟小区载波分配方案。该方案通过虚拟小区之间的相互协作,让服务质量更好的小基站退出某些虚拟小区,释放相应的分量载波,为新用户服务。仿真结果表明,与传统算法相比较,该方案可以显著改善小区边缘的信号质量,提升系统整体性能,系统平均频谱效率比ACCS算法提高了约16%,比CCCS算法提高了约6%。Ultra-dense network typieallyusesauser-eentrievirtualeellfornetworking, which can ensure a good user experience. However, the problem of resource allocation invirtual cell networking sehemeis very challenging. Inthispaper, avirtualeellearrie ralloeation algorithm based on maximum SINR is proposed. By the cooperation among virtual cell sinthe wireless network, small cell swhiehean off erabetterservieeexitfrom theirvirtualeellsandjoinanewonetoofferitsuser with respeetiveCC. Simulation results show that compared with the traditional ACCS and CCCS algorithms, this scheme can improve the signal quality of the cell edge as well as the performance of the system. The spectrum efficiency is 16% higher than ACCS and 6% higher than CCCS.

关 键 词：超密集网络 虚拟小区 小基站 载波选择 资源分配 

分 类 号：TN929.53[电子电信—通信与信息系统]