Practical evaluation of on-demand smallcell ON/OFF based on traffic model for 5G cellular networks
Practical evaluation of on-demand smallcell ON/OFF based on traffic model for 5G cellular networks
复制标题
DOI：
10.1109/wcnc.2016.7564669
复制
发表时间：
2016-04
期刊：
影响因子：
--
通讯作者：
G. Tran;Hidekazu Shimodaira;Roya E. Rezagah;K. Sakaguchi;K. Araki
中科院分区：
文献类型：
--
作者：
G. Tran;Hidekazu Shimodaira;Roya E. Rezagah;K. Sakaguchi;K. Araki
5G通信网络将为用户和垂直市场带来增强的移动的宽带服务，支持来自上下文相关应用的非常广泛的需求。为了支持5G中的此类应用，不仅传统的区域流量容量，而且网络能效也是一个关键因素，因为信息处理的能耗也成为运营商的经济问题。为了解决这个问题，我们的项目考虑了一个基于C-RAN的云协作HetNet架构，该架构能够在小型小区之间进行全局资源优化，以最大限度地提高目标函数，例如能源效率。另一方面，基于网络能够以具有成本效益的方式动态适应变化的动态流量模型对于5G的设计也至关重要。本文开发了这样的交通模型的基础上现实的测量数据在东京都。基于所开发的模型，一个按需的小区激活/去激活联合用户关联机制，应用于最大限度地提高网络的能量效率定义为系统速率超过总消耗的能量。数值结果表明，该算法的有效性，对小时流量的动态变化，同时提高用户的满意度相比，传统的均匀网络。该论文还证实了毫米波小蜂窝HetNet相对于传统微波HetNet在以bps/W为单位的能量效率方面的优势。
5G communication networks will bring enhanced mobile broadband services to users and vertical markets supporting very wide range requirements from context-dependent applications. To support such applications in 5G, not only the conventional area traffic capacity but network energy efficiency is also a critical factor since energy consumption of information processing is also becoming an economic issue for operators. Dealing with this problem, our project considers a C-RAN based cloud cooperated HetNet architecture which enables global resource optimization among smallcells to maximize objective functions of interest e.g. energy efficiency. On the other hand, a dynamic traffic model based on that the network can dynamically adapt to the variation in a cost-effective way is also crucial for the design of 5G. This paper develops such traffic model based on realistic measurement data in metropolitan Tokyo. Based on the developed model, a on-demand cell activation / deactivation jointly with user association mechanism is applied to maximize the network's energy efficiency defined as the system rate over the total consumed energy. Numerical results show the effectiveness of the proposed algorithm against dynamic variation of hourly traffic while improving users' satisfaction as compared to conventional homogeneous network. The paper also confirms the superiority of mm-wave smallcell HetNet against conventional microwave HetNet in terms of energy efficiency in bps/W.