A Fair and Energy Efficient Cooperative Routing Protocol Based on Link Quality for Underwater Acoustic Sensor Network.

The variation of Link quality in underwater sensor networks often lead to link interruption and void-hole. To address the above issues, some protocols chose nodes with good link quality as relay nodes without considering fairness, while others used multipath and greedy forwarding which cause high energy consumption. Therefore, this article proposes a fair and energy efficient cooperative routing protocol based on link quality for underwater acoustic sensor network (FECRP). This protocol divides underwater sensor networks into clusters, selects cluster heads and relay nodes based on perceived link quality, it cooperatives with MAC protocol in the data transmission within the cluster, scheduling the repeated transmission of data packets to overcome link interruptions. The simulation results show that this protocol improves fairness and reduces energy consumption while ensuring throughput.