Forwarding Nodes Constraint based DBR (CDBR) and EEDBR (CEEDBR) in Underwater WSNs

Underwater Sensor Networks (UWSN) has recently become an important field due to the importance of underwater exploration. The unique characteristics of underwater environment make the designing of routing protocol a challenging task. It is difficult to replace the batteries, therefore, it is very important to design a routing protocol that gives maximum network lifetime. Depth Based Routing (DBR) and Energy Efficient Depth Based Routing (EEDBR) are two such routing protocols which give very good performance in underwater environment. In DBR and EEDBR while forwarding the data all the neighboring nodes receive the data. In our work by limiting the number of forwarding nodes, we have extended the network lifetime and energy consumption of DBR and EEDBR. Extensive simulations have been conducted in which show considerable improvement in terms of network lifetime and energy consumption.