Energy-Saving Resource Allocation with Lightweight Blockchain in Maritime Wireless Communication Networks

With the exploration of the ocean resource, establishing an energy-efficient and reliable maritime wireless communication network becomes more and more urgent. In maritime wireless communication networks, data types, such as search and rescue information, business information and surveillance video, will be continuously generated and need to be scheduled and shared. At the same time, there will be some trading needs. How to realize information exchange and ensure safe transactions is an urgent problem to be solved. To this end, this paper aims to establish a distributed network architecture composed of buoys and base stations (BS) at sea, and uses blockchain technology to solve the problem of the completeness of its decentralized network system. To satisfy the computing requirement companied with the blockchain, buoys and BSs in networks also have the computing ability. Due to the fact that buoys deployed in the ocean are hard to be frequently charged, the energy consumption problem is studied in this paper via the joint optimization of the communication resource and computing resource. We combine the weighted shortest processing time first (WSPT) model and the dynamic frequency and voltage scaling (DVFS) energy consumption model to propose an improved energy-saving algorithm. Finally, numerical results verify the superiority of the proposed algorithm.