A Localization Based Cooperative Routing Protocol for Underwater Wireless Sensor Networks

Algorithm 1

Relay node selection.

: Source node

: Residual energy of node

: Signal to Noise ratio between source and expected relay

: Depth of the node

: Delay between source and expected relay

broadcast control packet

Neighboring nodes send response message

if Response message received = True, then;

Compute function using equation (8).

end if

Node with maximum value of function is considered best relay