The main aim of Internet of Underwater Things (IoUT) is to grow a global network of smart underwater-interconnected devices. The development of IoUT empowers to monitor massive unexplored areas in water. Underwater communications are considered as more challenging than the terrestrial communications Moreover, the requirements of high data rates, security, and throughput in the IoUT applications cannot be met by current underwater acoustic channel. Consequently, researchers have shifted their interest to higher frequency bands (i.e., mmWave and THz band). The multi-GHz contiguous bandwidth that can be provided by the terahertz (THz) bands is anticipated to meet the requirements of IoUT communication systems. This article takes use case of communication inside a submarine and proposes a service specific channel selection (SSCS) scheme. SSCS dynamically exploits either the underwater acoustic, mmWave or THz channel, depending on the category of the information data (public, internal, confidential, restricted), to be transferred through a service. The numerical results show that the proposed SSCS scheme is superior to existing underwater communication techniques in terms of sum data rate, energy efficiency and throughput.
Jain et al. (Sun,) studied this question.