Middleware Systems for Wireless Sensor Networks: A Comparative Survey

Wireless sensor networks (WSNs) play an important role of the Internet of things as one of the core technologies in ubiquitous and pervasive computing. Middleware for WSNs is a hot topic as applications and platforms in WSNs have been widely developed. This paper comparatively reviews middleware systems for WSNs. In particular, the advanced middleware systems reported recently are reviewed and all the existing middleware systems are compared in terms of important features and characteristics. First, challenging issues about the important features for designing middleware for WSNs are introduced. Then, recent advancements in middleware for WSNs are reviewed and compared.