LTE-Advanced异构网中载波选择与波束成形联合算法

doi:10.11959/j.issn.1000-0801.2015004

电信科学 ›› 2015, Vol. 31 ›› Issue (1): 89-93.doi: 10.11959/j.issn.1000-0801.2015004

LTE-Advanced异构网中载波选择与波束成形联合算法

方锐,孙长印,卢光跃,郑龙龙

西安邮电大学无线网络安全技术国家工程实验室西安 710121

出版日期:2015-01-15 发布日期:2017-02-21
基金资助:
中兴项目产业资助项目（基于载波聚合的异构网干扰管理研究）;西安邮电大学创新基金资助项目

Component Carrier Selection and Beamforming Jointly in LTE-Advanced Heterogeneous Network

Rui Fang,Changyin Sun,Guangyue Lu,Longlong Zheng

National Engineering Laboratory of Wireless Network Security， Xi’an University of Post and Telecommunication，Xi’an 710121，China

Online:2015-01-15 Published:2017-02-21
Supported by:
The Project Foundation of ZTE;The Innovation Foundation of Xi'an University of Post and Telecommunication

摘要/Abstract

摘要：

为解决LTE-Advanced异构网内宏小区及微小区间的相互干扰问题，提出了载波选择与波束成形联合算法。在高密度、多低功率微基站节点的异构网中，通过关闭部分基站的部分载波，并在开启载波的基站天线上进行波束成形，使接收端受到的干扰大幅度降低。另外，基于效用函数的约束，对载波、波束分别计算，使原本二维联合优化问题变成两个一维优化问题，降低了算法复杂度。仿真结果表明该方案增加了异构网中边缘用户及整个系统的吞吐量。

关键词: 异构网, 载波聚合, 波束成形, 小区间干扰协调

Abstract:

To deal with the interference between macro cell and pico cell, or between pico cell themselves in LTE-Advanced heterogeneous network, joint algorithm of component carrier selection and beamforming was proposed. By shutting down a subset of the component carrier in the dense low power node deployment scenario,it could remove lots of interference at the receive side. Additionally, based on utility function and calculate separately, algorithm reduced the dimensions and the searching complexity of the algorithm. Simulation results show that the proposed scheme can bring a great throughput gain of edge users and the whole system in the heterogeneous network.

Key words: heterogeneous network, carrier aggregation, beamforming, inter-cell interference coordination

方锐,孙长印,卢光跃,郑龙龙. LTE-Advanced异构网中载波选择与波束成形联合算法[J]. 电信科学, 2015, 31(1): 89-93.

Rui Fang,Changyin Sun,Guangyue Lu,Longlong Zheng. Component Carrier Selection and Beamforming Jointly in LTE-Advanced Heterogeneous Network[J]. Telecommunications Science, 2015, 31(1): 89-93.

图/表 5

参考文献 14

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参数	数值
载波带宽/MHz	10
载波数	2
微基站路损/dB	140.7+36.7lg10（R）,R的单位为km
宏基站路损/dB	128.1+37.6lg10（R）,R的单位为 km
阴影衰落/dB	8
宏基站发射功率/dBm	43
微基站发射功率/dBm	20

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LTE-Advanced异构网中载波选择与波束成形联合算法

Component Carrier Selection and Beamforming Jointly in LTE-Advanced Heterogeneous Network

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