Implementation of Neighbor Discovery Protocol for Underwater Acoustic Communications

Abstract

Underwater Acoustic Sensor Networks (UASN) consisting of sensor nodes and underwater gateways (routers) have wide variety of applications, which include environmental monitoring, scientific exploration, surveillance etc. Ad hoc nature of these networks in terms of mobility due to water current pose challenges in topology management. Neighbor discovery is an important issue in topology management which is required to auto configure the node addresses, and establish communication links among the nodes to perform routing management. The media access control (MAC) protocol may utilise the neighbor discovery information to decide the accessibility of the media by nodes so as to reduce the delays and increase throughput. Thus, there is a necessity of integrating MAC protocol and neighbor discovery mechanism in UASN. In this paper, we describe the architectural elements of neighbor discovery protocol module implementation in NS3. The implementation models surface and underwater interactions, mobility, and channel conditions required for network level simulation. The module implements two main classes namely, NeighborDiscoveryProtocol and NeighborDiscoveryCache, which enable the protocol interactions. We present the preliminary results from implemented module using NS3.

Agent‐based secure routing for underwater acoustic sensor networks

“…The neighbor nodes on receiving RRQ verifies whether the information is from the legitimate node through the authentication mechanism, and once it is able to access the information through the key, it checks for condition given in . The various parameters of the node such as link quality (L qual ), queue length (N queue ), node energy (N energy ), and hop count information (C hop ) are obtained as in previous studies, 36,48 and if the neighbor node is legitimate it sets the field of true neighbor TN field to 1; other fields ID, SA, DA, RI, and RDF are similar to the RRQ. The packet is sent by encrypting using AES encryption with the key.…”