Analysis on mobility and connectivity for adaptive routing protocol technique in ad hoc network

Wireless mobile ad hoc networks operates without any central coordination, and incumbent network and routings protocols for exchanging messages between nodes in the network do not perform satisfactory. For MANET, customized new protocols are required because it has a higher uncertainty in network topology and connectivity due to node mobility and uncontrolled contentions. In order to counterpart the performance degradation, we propose a concept of selecting a certain routing protocol on the fly according to the network parameters such as node density, connectivity, and mobility. By designing a standard protocol selection function that is defined by those parameters, the functional values should indicate which of the routing protocol on the stack can be the most suitable one. Computer simulations are performed using OPNET and the MANET is analyzed under various scenarios by varying node density and node speed. The protocol selection function is designed based on the collected simulation data base in each node. The simulation goes further to evaluate the accuracy of the selection function. The investigation results show us that our adaptive routing protocol switching algorithm provides a better performance in terms of bandwidth utilization and delay.