A Leader-Based k-Local Mutual Exclusion Algorithm Using Token for MANETs

The k-local mutual exclusion is a generalization of local mutual exclusion problem introduced by Attiya et al.. In k-local mutual exclusion, it is assumed that the k identical copies of a resource are shared among the geographically close nodes. The paper proposes a solution to the k-local mutual exclusion problem in MANETs. The algorithm uses a leader-based approach and the leader is equipped with a token. It is suited to handle mobility that triggers the dynamism in topology of ad hoc networks. The algorithm satisfies safety, starvation freedom and l-deadlock avoidance properties. The best case message complexity of our algorithm is O (1) whereas the worst case message complexity is O (N). To the best of our knowledge, it is the first algorithm to solve k-local mutual exclusion problem in MANETs. The solution to token loss problem is also included in the present exposition.

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