Adaptive and Dynamic Beaconing Update Mechanism for Position-based Routing Protocols

Location information to be up to-date is a fundamental operation in position-based routing protocols for mobile ad hoc networks. The location information accuracy level depends on beacon sending frequency and the neighbors' entries timeout period. This instigates the need for dynamic updating approach with improved technique to refresh neighbors' entries in a node's neighbors' matrix (NLM). This paper presents a dynamic beaconing update mechanism (DBUM). In the DBUM, the mobile nodes dynamically adjust their beacon intervals based on pre-specified tolerance deviation distance by using the dynamic fuzzy logic controller. Moreover, with DBUM, a node applies the residual link lifetime with its neighboring node to refresh their entries in its NLM. Compared with the existing algorithms, evaluation results reveal that the proposed DBUM algorithm increases the accuracy of a node's information in its NLM matrix and achieves high packet delivery ratio at the expense of negligible overhead increment.