Guest Editorial Special Issue on Software Defined Wireless Sensor Networks

Although Wireless Sensor Networks (WSN) have emerged with a great potential to change our life, especially with ubiquitous sensing and sensory data access through Sensing-as-a-service (
$\text{S}^{2}$
aaS) models, there are still many fundamental technical challenges that need to be addressed to realize this potential. These challenges include the complexity and diversity of applications, the needs for highly flexible and secure configuration management mechanisms, the need to design programmable and novel sensory techniques, and the needs to balance local intelligence and scalable cloud-based intelligence to satisfy real-time service objectives.