LTE-A系统载波聚合下基于贪心算法的资源管理

doi:10.3969/j.issn.1000-3428.2017.11.009

计算机工程

LTE-A系统载波聚合下基于贪心算法的资源管理

郑金金^1,2,罗志年¹

(1.湖南大学信息科学与工程学院,长沙 410082; 2.中国人民解放军94855部队,浙江衢州 324000)

收稿日期:2016-10-14 出版日期:2017-11-15 发布日期:2017-11-15
作者简介:郑金金(1986—),男,硕士,主研方向为无线资源管理、无线通信系统;罗志年(通信作者),副教授、博士。
基金项目:
国家自然科学基金(61371115)。

Resource Management Based on Greedy Algorithm for Carrier Aggregation in LTE-A System

ZHENG Jinjin^1,2,LUO Zhinian¹

(1.College of Computer Science and Electronic Engineering,Hunan University,Changsha 410082,China; 2.94855 Unit of People’s Liberation Army,Quzhou,Zhejiang 324000,China)

Received:2016-10-14 Online:2017-11-15 Published:2017-11-15

摘要/Abstract

摘要：

为更好兼顾LTE-A系统吞吐量与用户公平性,提出基于贪心算法的资源管理方法。在载波聚合时充分利用用户端上报的信道状态信息,降低信道变化对载波聚合算法性能的影响。使用贪心算法解决资源分配时的NP难问题,在用户调度过程中利用用户占用的资源块数和平均速率重新设计贪心算法中的权值因子,从而满足各类用户对服务质量的不同需求。仿真结果表明,与LL+PF算法相比,该算法具有较好的用户公平性和更高的系统吞吐量。

关键词: LTE-A系统, 载波聚合, 资源管理, 贪心算法, 公平性

Abstract: To better balance system throughput and user fairness of LTE-A systems,a resource management based on greedy algorithm is proposed.The Channel State Information(CSI) information reported by the client is fully utilized to reduce the performance impact of carrier aggregation by channel variation,and the greedy algorithm is adopted to solve the NP-hard problem of resource allocation.In scheduling process,the weight factor is redesigned by using occupied resource blocks and average rate to guarantee the different Quality of Service(QoS) requirements of all kinds of users.Simulation results show that compared with LL+PF algorithms,the proposed algorithm has better performance both in user fairness and system throughput.

Key words: LTE-A system, carrier aggregation, resource management, greedy algorithm, fairness

中图分类号:

TP391

郑金金,罗志年. LTE-A系统载波聚合下基于贪心算法的资源管理[J]. 计算机工程, doi: 10.3969/j.issn.1000-3428.2017.11.009.

ZHENG Jinjin,LUO Zhinian. Resource Management Based on Greedy Algorithm for Carrier Aggregation in LTE-A System [J]. Computer Engineering, doi: 10.3969/j.issn.1000-3428.2017.11.009.

参考文献

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LTE-A系统载波聚合下基于贪心算法的资源管理

Resource Management Based on Greedy Algorithm for Carrier Aggregation in LTE-A System

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