Design MAC protocol for Cognitive Radio Wireless Sensor Networks based on network requirements

ABSTRACT Cognitive radio (CR) technology is envisaged to solve problems in wireless networks resulting from the limited available spectrum usage by exploiting the existing wireless spectrum opportunistically that are not utilized. CR allows unlicensed users to access licensed frequency bands, under the condition of protecting the quality of service of the licensed networks. Thus, attaching Wireless Sensor Networks (WSNs) with CR technology, spectrum scarcity problem can be solved. This paper introduces a new definition for Cognitive Radio Wireless Sensor Networks (CRWSNs). It shows a brief overview on WSNs and CR tasks. It states the potential advantages of attaching cognitive radio capability with wireless sensor network. An investigation about designing a special MAC protocol for CRWSN is proposed. Study some parameters that affect the MAC protocol designing. Paper also discusses some challenges and open researches that face CRWSN MAC protocol. Finally, we present health care network as an example on WSN applications to clarify network’s requirements based on application.