Achieving Sustainable Ultra-Dense Heterogeneous Networks for 5G
Achieving Sustainable Ultra-Dense Heterogeneous Networks for 5G
复制标题
实现 5G 可持续的超密集异构网络
DOI：
10.1109/mcom.2017.1700410
复制
发表时间：
2017-12-01
影响因子：
11.2
通讯作者：
Liao, Zhifang
中科院分区：
文献类型：
--
作者：
An, Jianping;Yang, Kai;Liao, Zhifang
由于移动数据流量需求呈指数级增长，例如从4G到5G的流量需求增长了1000倍，网络致密化被认为是蜂窝网络演进的关键机制，UDHN是满足5G网络爆炸式数据流量需求的一种很有前景的技术。在UDHN中，通过密集部署小蜂窝，使基站离用户越来越近，从而获得极高的频谱效率和能源效率。在本文中，我们首先提出了一种潜在的UDHN网络架构，然后提出了一种广义的正交/非正交随机接入方案，以提高网络效率，同时降低信令开销。仿真结果验证了该方案的有效性。最后，我们提出了UDHN面临的一些关键挑战。
Due to the exponentially increased demands of mobile data traffic, for example, a 1000-fold increase in traffic demand from 4G to 5G, network densification is considered as a key mechanism in the evolution of cellular networks, and UDHN is a promising technique to meet the requirements of explosive data traffic in 5G networks. In the UDHN, the base station is brought closer and closer to users through densely deploying small cells, which results in extremely high spectral efficiency and energy efficiency. In this article, we first present a potential network architecture for the UDHN, and then propose a generalized orthogonal/non-orthogonal random access scheme to improve the network efficiency while reducing the signaling overhead. Simulation results demonstrate the effectiveness of the proposed scheme. Finally, we present some of the key challenges of the UDHN.