Combination of Community Structure and Mechanism to Maximize Data Availability in Adhoc Social Network (ASNET)

Abstract

ASNET is collection of social network and MANET which is infrastructure less self configuring capability of mobile nodes connected by wireless network. In these networks due to mobility of node there is much change in network topology and this causes frequent network division. So, data sharing in network play vital role. One probable solution to avoid this problem is to take up replication techniques which increases data availability and decrease query response delay. The replication process duplicates and preserves the consistency of multiple copies of objects in different sites so that each client node can visit a local copy of an object instead of remote ones. ASNET data replica allocation helps to avoid packet losses in case of unpredictable network partition and etc. In this paper, the community structure based replica allocation called RepCoH (Replica on the Community Head) is proposed which address the limitation of other protocols. It collaborate mobile node fully in terms of sharing their memory space by combining the structure of the community to minimize query delay when the node move from one community to other and design the mechanism that maximize data availability and protect data loss. The protocol considers moving behaviour of nodes with properties such as storage capacity and power remain while allocating data on community head to achieve better load balancing. The extensive simulations are performed to analyze and compare the behaviour of RepCoH with ComPAS and No Replica framework for different network scenarios generated by varying parameters such as network size and time of simulation. The performance evaluation of RepCoH through simulation indicated the proposed protocol increases data availability, and achieves better packet load balancing in comparison to ComPAS and No Replication scenarios.