Authors: N. Saravanan; R. Baskaran; M. Shanmugam; M.S. Saleem Basha; P. Victer Paul
Addresses: Department of Computer Science and Engineering, Anna University, Chennai, India ' Department of Computer Science and Engineering, Anna University, Chennai, India ' Department of Computer Science, Pondicherry University, Puducherry, India ' Department of Computer Science, Pondicherry University, Puducherry, India ' Department of Computer Science, Pondicherry University, Puducherry, India
Abstract: In Mobile Ad Hoc Network (MANET), every neighbouring node is likely to have similar interests and need to access the similar data at different times. So, by caching the frequently accessed data item within MANET, it is possible to reduce the cost of accessing the same data from the external source. In this perspective, an effective data cache mechanism is proposed by Paul et al., using the distributed spanning tree as a communication structure to lessen network overload. As an enhancement, ant colony optimisation technique has been applied on DST to cope with the fragile nature of the MANET. In this paper, a theoretical model has been formulated to assess the performance factors such as cooperative cache, mobility and hand-off and routing technique. In addition to these, the performance improvement of DCM in MANET has been proved experimentally using cache hit and data consistency using appropriate simulation.
Keywords: data caching; quality of service; QoS; hit ratio; distributed spanning tree; ant colony optimisation; ACO; MANETs; OMNeT++; modelling; mobile ad hoc networks; mobile networks; data cache mechanisms; network overload; mobility; hand-off; routing; cache hit; data consistency; simulation.
International Journal of Wireless and Mobile Computing, 2013 Vol.6 No.5, pp.515 - 527
Received: 22 Jan 2013
Accepted: 16 Jul 2013
Published online: 28 Oct 2013 *