Guoqiang Mao

University of Technology Sydney,Sydney, NSW 2007, Australia

With the popularization of wireless multimedia communications, the wireless traffic is predicated to be increased more than 1000 time in the next decade. Some new technologies, e.g., massive multi-input multi-output antennas, millimeter wave and small cell networks are developed to support high speed wireless transmission in futurefifth generation(5G) mobile communication systems. On the other hand, it is a great challenge how to face the quick growth of energy consumption in 5G mobile communication networks due to the massive wireless traffic. However, detailed investigation of the energy efficiency of 5G mobile communication networks from three aspects of theory models, technology developments and applications is surprisingly rare in the open literature. Fortunately, the scholarly writing, 5G Green mobile communication networks, published by Publishing House of Electronics Industry in November 2016, points out the directions and research advance of 5G green mobile communication networks. The authors are Prof. Xiaohu Ge from Huazhong University Science and Technology, Prof.Chin-Feng Lai from National Chung Cheng University and Dr. Wuxiong Zhang from Shanghai Institute of Microsystem and Information technology, Chinese Academy of Sciences. Prof. Ge is also an editor of IEEE Transaction on Green Communications and Networking. Prof. Lai is an associate editor-in-chief for the journal of Internet Technology. Dr. Zhang is the vice director of Key Lab of Wireless Sensor Network and Communication.

Starting with the fundament knowledge of green communications, the book first describes the theory basis of energy efficiency in 5G mobile communication networks and its key issues. Secondly, some new wireless transmission technologies used for saving the energy consumption are presented for 5G mobile communication networks. Thirdly, how to save the energy consumption of wireless multimedia communications is measured and tested in applications of 5G mobile communication networks. Prof. Ge chairs the IEEE Communications Society 5G Mobile Wireless Internet Emerging Technologies Subcommittee, which focuses on promoting the development of 5G mobile communication technologies. The authors of this book play an active role on 5G green communication technologies in both IEEE ComSoc and industrialization.

Prof. Xiaohu Ge have founded the China International Joint Research Center of Green Communications and Networking, which is the China national platform of green communications and networking. Based on their studies on the theory of energy efficiency of 5G mobile communication networks, the optimization models of base stations (BSs) deployment have been analyzed with the coverage size of BSs and density of BSs. Moreover, the impact of the spatial distribution of wireless channels and traffic on the energy efficiency of mobile communication networks is investigated. The maximum energy efficiency limit is derived as a guideline for designing future 5G mobile communication networks. Furthermore, the 5G wireless backhaul network architecture is presented for discussing the energy efficiency of cellular networks in the total lifetime of productions. In the end, some basic theory issues and challenges of 5G mobile communication networks is discussed to promote the future research in 5G green mobile communication networks.

Prof. Chin-Feng Lai have founded the Industrial Technology Research Institute for quality of experience (QoE) multimedia streaming service in embedded platforms.In the application part of the book, Android is ported on the PAC Duo system on chip(SoC) heterogeneous platform made by the Industrial Technology Research Institute as the basic hardware platform. At the same time, the dual digital single processor (DSP)H.264 decode function is integrated into Stage Fright multimedia framework for achieving audio and video synchronization in 5G mobile communication networks. To provide a better quality of streaming service by considering hardware constriction, compute ability and 5G mobile communication networks bandwidth, a dynamically streaming adjustment scheme is designed. Moreover, a buffer-based bandwidth prediction and strategic decision model is designed for QoE-based MPEG dynamic adaptive streaming over HTTP (DASH). According to experimental result, the proposed scheme can improve 20% satisfaction of watching video streaming in 5G mobile communication networks.

Dr. Wuxiong Zhang and his group have focused on traffic flow modeling and wireless resource management for mobile communication networks. Based on real traffic data from China Telecom, they analyzed multi-cell multi-user traffic flow models, and then proposed a green resource allocation method with Bregman inexact excessive gap, combining interference model and BSs location distributions. Furthermore, a novel energy efficiency metric, considering the energy efficiency of both mobile terminals and BSs, is presented to systematically study the impact of the deployment of low power BSs and the efficiency of the proposed resource management method on mobile communication networks.

The book is not only well arranged, but also relative simple to understand. Therefore,the book is equally suitable for both engineers who are currently learning the 5G green communication technologies and those who are developing the energy efficiency optimization technologies for 5G mobile communication networks. It is also suitable as a textbook for senior undergraduates and graduates in the topic of wireless communication engineering.