Wireless on demand network systems and services have become pivotal in shaping our future networked world Starting as a niche application over Wi Fi, they can now be found in mainstream technologies like Bluetooth LE, LTE Direct and Wireless LANs, and have become the cornerstone of upcoming networking paradigms including mesh and sensor networks, cloud networks, vehicular networks, disruption tolerant and opportunistic networks, and in body networks The challenges of this exciting research field are numerous Examples include how to make smart use of these novel technologies when multiple technologies or a mix of permanent services and on demand networking opportunities are available to a network node, how to provide robust services in highly dynamic environments, how to efficiently employ and operate heavily resource constrained devices, and how to develop robust and lightweight algorithms for self organization and adaptation