حبیب رستمی

Three major problems of wireless sensor networks can be summarized into communication traf?c, energy consumption and routing security. In this paper, we analyze performance of an underwater sensor network in dense mode under creation of spherical division-based forbidden regions. Obviously, unnecessary smart node removal from the packet forwarding process of a ?ooding-based routing policy is theoretically an idea for enhancing the known network parameters. In this research,ourpurposedapproachistoimproveenergyconsumptionbyusingaremoval process over physical routing space toward more network reliability and better network lifetime. Clearly, our aim is performance improvement in terms of a network protocol in an underwater wireless sensor networks with a huge number of highspeed mobile nodes. The nodes generally consist of different underwater instruments such as sensors, robots, modems and batteries and are categorized into two groups of autonomous unmanned underwater vehicles and remotely operated vehicles. The proposedapproachisahybridsolutionbasedonvector-basedforwardingroutingprotocol and spherical divisions which is named spherical division-based vector-based forwarding. The proposed protocol can successfully reduce energy consumption and equivalently increase the network lifetime while packet delivery ratio is in a saturation level. In details, our proposed method works on preservation of sensors’ energy in which we physically remove some additional paths of routing process (based on a multipath forwarding using a basic routing algorithm). In this regard, we apply a sphericaldivision-basedphysicalrestrictionontheroutingspace.However,removing theseadditionalsensornodes/routersisconditionallydoneunderkeepingthesuitable traf?c performance in terms of PDR because it is essential to say that a new scheme is effective.