A survivability opportunistic routing protocol for Secure Underwater Acoustic Sensor Networks

Survivability helps ensure that underwater acoustic sensor networks (UASN) provide essential services under conditions of attacks, failures, and accidents. In this paper, a survivable opportunistic routing protocol is presented to improve the security of UASN. Firstly, whole network node’s importance is continuously counted by sink node in the process of node information exchange. Then, by dynamic adjusting the node’s hold-time (HT) based on node’s importance at the opportunistic routing candidate set selection stage, we can improve the survivability of the UASN. Give the packet delivery rate (PDR) and end-to-end delay two measures to define the survivability of UASN. By simulating attacks, failures and accidents, the PDR and end-to-end delay results show that the proposed secure opportunistic routing protocol can greatly improve the survivability of the network.