The increasing energy demands along with the reduction of fossil fuels have been identified as a significant issue which needs to be urgently addressed to have a sustainable future. This realization has motivated towards the development of “Green Cloud computing and Communications” which can enable a transition towards a sustainable society with a reduced carbon footprint. A major role in the "greening" effort to globally reduce the energy consumption will be played by Computing, Communication and Fixed networking technologies. All these technologies have to deal with the critical factors on energy consumption, for example, to control the energy consumption of the large-scale cloud datacenters. Hence, new architectures, systems and related application techniques, such as software-defined networking (SDN), mobile cloud computing (MCC), Fixed Network Connection and hybrid cloud services, are highly required in cloud computing datacenters and in communication & network devices to be more productive and energy efficient, to provide a "Green" world. Thus, this is highly demanding to find out new ways in reducing energy consumption for a better environment. Though the need for “greener” cloud computing communication and fixed networking technologies has been recognized recently by the researchers worldwide, still many challenges remain to be addressed.

Green Mobile Cloud Computing (GMCC) refers to the power/energy-efficient architectures for mobile cloud computing. Due to the low battery life and resource hindrance, the execution of exhaustive applications or storing huge amount of data inside the mobile device is quite difficult. Therefore, the execution of exhaustive applications or storing huge amount of data inside the cloud is performed in MCC. However, the communication with the cloud also needs power/energy consumption of the mobile device. Security and privacy are also major issues while the use of remote cloud comes into the scenario. Therefore, whether to execute the application locally or to the cloud, or store the data locally or to the cloud, this decision making is highly important to achieve a green system.

The objective of this book is to present a collection of high-quality research papers that report the latest research advances in the area of green mobile cloud computing which solicits original, unpublished research papers both from academy and industry reporting on substantial results in the green mobile cloud computing.