A Medium Access Control Protocol Based on Interference Cancellation Graph for AUV-Assisted Internet of Underwater Things

With the booming development of marine exploration technology, new studies such as oceanix city, smart coastal and underwater cities have been proposed, Internet Underwater Things (IoUT) has received a lot attention. Data collection is an important application IoUT. The common method to collect data by traversing network using intelligent devices, Autonomous Vehicles (AUVs). However, traditional methods focus more on issues, path planning or task assignment AUVs. It commonly known that MAC protocol plays crucial role in transmission, which designed solve competition issue for shared channels. research very challenging owing characteristics hydroacoustic communication, e.g., low bandwidth, high error rate, long transmission latency. Hence, this paper proposes based Interference Cancellation Graph (ICG-MAC) AUV-assisted ensures AUVs can join immediately after arriving at target area they do not interfere with normal work other sensor nodes. Firstly, be reached AUV defined according node degree residual energy; then interference model between neighboring nodes analyzed Graphx established, time slots are allocated nodes; finally, moves conflict-free collection. simulation results show proposed algorithm outperforms comparison algorithms terms throughput energy consumption. assistance AUV, better connectivity higher traffic obtained.