A delay-constrained energy-efficient component carrier adjusting scheme for LTE-Advanced systems

作     者：陈华夏 Hu Honglin 

作者机构：Key Laboratory of Wireless Sensor Network & CommunicationShanghai Institute of Microsystem and Information Technology(SIMIT)Chinese Academy of Sciences(CAS) University of Chinese Academy of Sciences Shanghai Research Center for Wireless Communications(WiCO) 

出 版 物：《High Technology Letters》 (高技术通讯（英文版）)

年 卷 期：2014年第20卷第3期

页      面：237-244页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 081001[工学-通信与信息系统] 

基　　金：Supported by the National High Technology Research and Development Program of China(No.2011AA01A109) the National Natural Science Foundation of China(No.61002017,61072076.) the Department of Science and Technology Commission of Shanghai Base Project(No.11DZ2290100) 

主　　题：energy efficiency carrier aggregation (CA) delay constraint component carrier(CC) scheduling long term evolution-advanced systems 

摘      要：The energy efficiency and packet delay tradeoffs in long term evolution-advanced(LTE-A) systems are *** expressions are derived to explain the relation of energy efficiency to mean packet delay,arrival rate and component carrier(CC) configurations,from the theoretical respective which reveals that the energy efficiency of multiple CC systems is closely related to the frequency of CCs and the number of active *** on the theoretical analysis,a CC adjusting scheme for LTE-A systems is proposed to maximize energy efficiency subject to delay constraint by dynamically altering the on/off state of CCs according to traffic *** and simulation results show that for CCs in different frequency bands with equal transmit power,the proposed scheme could significantly improve the energy efficiency of users in all aggregation levels within the constraint of mean packet delay.