Logical clusters in a DHT-Paradigm for scalable routing in MANETs

Abstract

Connectivity of nodes in the logical network is the minimal requirement for the functionality of a distributed hash table (DHT)-based routing protocol. In case of high mobility, frequent changes to the network topology introduce higher maintenance overhead for updating the mapping information that worsens not only the performance of these protocols, but also restricts their pertinence only to the networks with low mobility. In addition, the route to the destination node in such protocols is not immediately available which result in high lookup latency for the requesting node.In this paper, we proposes a novel 3-dimensional logical cluster-based DHT routing protocol for mobile ad hoc network (MANETs) that use logical clustering and an effective replication strategy to reduce the routing overhead and lookup latency introduced by the above problems. Simulation results substantiate the effectiveness of the proposed protocol in terms of reducing the delay by slightly increasing the control overhead.