Special issue on pervasive mobile energy sharing

Energy is a scarce resource in any pervasive mobile and wireless networks that consist of devices/vehicles mainly powered by their batteries. Providing energy ubiquitously to these devices for making them functional for a long time is a challenging task. With the advent of energy sharing techniques, either by wired or wireless mediums (wireless power transfer -- WPT), it is possible to extend the lifetime of such networks by utilizing the energy from other energy sources (e.g., chargers, other devices) within the network. Recently, there is a growing number of research studies that adopt the energy sharing for several energy optimization problems in different applications of mobile networks including Wireless Sensor Network (WSN), Delay Tolerant Networks (DTN), Mobile Social Network (MSN), Vehicular Networks or Unmanned Aerial Networks.