LTE-Advanced系统载波聚合下无线资源分配算法  

Wireless resource allocation algorithm for LTE-Advanced system with carrier aggregation

作　　者：朱国晖[1] 周广谭 薛茜[1] 

机构地区：[1]西安邮电大学通信与信息工程学院,陕西西安710121

出　　处：《西安邮电大学学报》2015年第2期47-51,共5页Journal of Xi’an University of Posts and Telecommunications

基　　金：陕西省教育厅科学研究计划资助项目(07JK377)

摘　　要：为改善LTE-Advanced系统载波聚合场景下通信系统性能,针对比例公平调度算法加以改进,得出一种基于辅载波激活的分组资源分配算法。根据用户所在位置,将用户分为中心用户和边缘用户,通过限制某些成员载波上分配给边缘用户资源块数量,并结合载波聚合技术中引入辅小区激活/去激活机制,设计新的用户优先级权值公式。仿真结果显示,改进算法可提高边缘用户吞吐量,改善用户间公平性。In order to improve the performance of LTE-Advanced communication system under carrier aggregation scenarios,we present a modified proportional fair scheduling algorithm,a kind of grouping resource allocation algorithm based on secondary carrier activation is proposed.Users are divided into the cell center users and the cell edge users according to the position of users.By restricting certain number assigned to the cell edge users resource block on the component carrier,and in conjunction with the carrier aggregation technology introduced in secondary cell activation/deactivation mechanism,a new user priority weighting formula is designed.Simulation results indication that,this algorithm can improve the throughput of the cell edge users and increasing the fairness between users.

关 键 词：LTE-ADVANCED系统 载波聚合 无线资源分配 吞吐量 公平性 

分 类 号：TN929.53[电子电信—通信与信息系统]