Cognitive radio-medium access control protocol for Internet of Multimedia Things (IoMT)

To support the demand of multimedia traffic in the internet-of-things (IoT), the multimedia device needs to be bandwidth/spectral efficient and should have the capability to support green communication. Further, an excellent higher processing capability requirement and ability to support different multimedia content through IoMT is a challenging task. As the multimedia transmission is a bandwidth-hungry system, therefore, the cognitive radio network is one of the efficient solutions to support IoMT. To fulfill the demand of data rate of multimedia applications using cognitive radio-based IOMT, the design of medium access control (MAC) layer protocol is the most promising and challenging task. The other major challenge raised in implementing IoMT devices lies in the delivery of multimedia data within the bound of quality-of-service (QoS) and quality-of-experience (QoE) constraints. Further, a significant low-cost IoMT device that supports heterogeneity and communicates well with all types of networks is required. Therefore, this chapter reviews the various aspects of the IoMT network especially the cognitive radio network-based technologies and multimedia devices with its requirements set by the IoMT standard are presented. Various challenges faced in the cognitive radio-based network and potential breakthroughs in the design of protocols for IoMT devices are comprehensively discussed along with the technical solutions. Further, the MAC protocols for the cognitive radio-based IoMT devices to satisfy the QoS/QoE constraints laid down by the network are the research contributions in this direction and their detailed studies are incorporated. Therefore, this chapter will help the research community for enabling cognitive radio technology in the IoMT network and provide potential solutions for the challenges imposed by the cognitive radio-based IoMT network.