超密集网基于干扰公平及多维协作的虚拟小区生成算法

doi:10.11959/j.issn.1000-0801.2017228

电信科学 ›› 2017, Vol. 33 ›› Issue (9): 20-27.doi: 10.11959/j.issn.1000-0801.2017228

超密集网基于干扰公平及多维协作的虚拟小区生成算法

赵晓宁,孙长印,梁彦霞

西安邮电大学通信与信息工程学院，陕西西安 710121

修回日期:2017-07-20 出版日期:2017-09-01 发布日期:2017-09-11
作者简介:赵晓宁（1991-），女，西安邮电大学通信与信息工程学院硕士生，主要研究方向为宽带无线通信。|孙长印（1963-），男，博士，西安邮电大学通信与信息工程学院副教授，主要研究方向为移动通信系统及关键技术。|梁彦霞（1981-），女，博士，西安邮电大学通信与信息工程学院副教授，主要研究方向为无线干扰管理及无线资源分配。

Virtual cell forming algorithm based on interference fair and multi-dimensional cooperation for ultra-dense network

Xiaoning ZHAO,Changyin SUN,Yanxia LIANG

Institute of Communication Engineering,Xi’an University of Posts and Telecommunications,Xi’an 710121,China

Revised:2017-07-20 Online:2017-09-01 Published:2017-09-11

摘要/Abstract

摘要：

在超密集网络场景中，小区密度持续增加使得干扰关系更加复杂，重叠虚拟小区结构使得资源分配深度耦合，导致虚拟小区选择成为影响系统性能的因素之一。为此，针对虚拟小区边权重设计，采用联合资源分配前置化思想，提出一种综合了干扰公平功率分配、MU-MIMO配对及协作传输诸增益因素的权重方案。针对虚拟小区成簇，基于提出的权重设计准则，通过最大权重成对小区成簇算法实现虚拟小区可重叠成簇。仿真结果表明，提出的虚拟小区生成算法可在低计算复杂度的前提下保证系统性能的改善。

关键词: 超密集网络, 虚拟小区, 边权重, 重叠, 成簇

Abstract:

Virtual cell is identified as one of factors affecting the system performance in ultra-dense network where the interference is complex with the increasing density of cells and the resource allocation strategies of different dimensions were coupled in overlapped virtual cells.Therefore,aiming at designing the edge weight of virtual cells,an algorithm considering the resource allocation in advance was proposed by taking interference fair power allocation,MU-MIMO operation and cooperative transmission into account simultaneously.Based on the proposed scheme of weight,the overlapped virtual cells could be formed by the proposed clustering algorithm named pairwise maximum weights.The simulation results demonstrate that the proposed algorithm can improve the sum-rate performance of the network effectively at a low complexity.

Key words: ultra-dense network, virtual cell, edge weight, overlapped, clustering

中图分类号:

TN929

赵晓宁,孙长印,梁彦霞. 超密集网基于干扰公平及多维协作的虚拟小区生成算法[J]. 电信科学, 2017, 33(9): 20-27.

Xiaoning ZHAO,Changyin SUN,Yanxia LIANG. Virtual cell forming algorithm based on interference fair and multi-dimensional cooperation for ultra-dense network[J]. Telecommunications Science, 2017, 33(9): 20-27.

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参考文献 11

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参数	数值
载波带宽/MHz	10
载波数量/个	2
AP基站路径损耗/dB	140.7+36.7lgd
阴影衰落/dB	8
AP基站发射功率/dBm	20
发送端天线数目/个	2
接收端天线数目/个	1

成簇方法	15个AP			18个AP
成簇方法	参考文献[8]提出的成簇算法	基于距离的成簇算法	PMW成簇算法	参考文献[8]提出的成簇算法	基于距离的成簇算法	PMW成簇算法
边缘用户和速率/(bit·s^-1)	0.41 × 10⁹	0.79 × 10⁹	0.91 × 10⁹	0.52 × 10⁹	0.88 × 10⁹	1.10 × 10⁹
系统平均和速率/(bit·s^-1)	0.82 × 10⁹	0.92 × 10⁹	1.00 × 10⁹	1.05 × 10⁹	1.12 × 10⁹	1.13 × 10⁹

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超密集网基于干扰公平及多维协作的虚拟小区生成算法

Virtual cell forming algorithm based on interference fair and multi-dimensional cooperation for ultra-dense network

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