Mobile Ad hoc Network provide an attractive solution for networking in the situations where network infrastructure or service subscription is not available. Its usage can further be extended by enabling communications with external networks such as Internet or cellular networks through gateways. However, data access applications in MANETs suffer from dynamic network connections and restricted energy supplies. Caching helps MANETs, to reduce average latency and wireless bandwidth, and also in alleviating from the situation of heavy traffic near the data centre. With data being cached by mobile nodes, a request to the data centre can easily be serviced by a nearby mobile node instead of the data center alone. In this paper we have proposed a Time Based Approach which provides access to recent data on demand basis. In this system, the data comes along with a time stamp. This approach provides data availability even with limited resources. We have evaluated the performance of our strategy using simulation and compared with existing non cooperative caching scheme.

1. A. Rousskov and D. Wessels (1998), "Cache Digests," Computer Networks and ISDN Systems, vol. 30, nos 22-23, pp. 2155-2168.
2. C. Y. Chow, H. V. Leong, and A. Chan (2004), "Peer-to-Peer Cooperative Caching in Mobile Environments," Proc. 24th Int'l Conf. Distributed Computing Systems Workshops (ICDCSW '04), pp. 528-533.
3. C. Y. Chow, H. V. Leong, and A. T. S. Chan (2004), "Group-Based Cooperative Cache Management for Mobile Clients in Mobile Environments," Proc. 33rd Int'l Conf. Parallel Processing (ICPP '04), pp. 83-90.
4. D. Wessels and K. Claffy (1998), "ICP and the Squid Web Cache," IEEE J. Selected Areas in Comm. , pp. 345-357.
5. F. Sailhan and V. Issarny (2003), "Cooperative caching in ad hoc networks ", Proc. MDM'03, pp. 13-28.
6. G. Cao, L. Yin, and C. R. Das (2004), "Cooperative Cache-Based Data Access in Ad Hoc Networks," Computer,vol. 37, no. 2, pp. 32-39.
7. Ge-Ming Chiu and Cheng-Ru Young (2009), "Exploiting In-Zone Broadcasts for Cache Sharing in Mobile Ad Hoc Networks IEEE Trans. Mobile Computing, vol. 8, no. 3.
8. L. Breslau, P. Cao, L. Fan, G. Phillips, and S. Shenker (1999), "Web Caching and Zipf-Like Distribution: Evidence and Implication,"Proc. IEEE INFOCOM '99, pp. 126-134.
9. N. Chand, R. C. Joshi, and M. Misra (2007), "Cooperative Caching in Mobile Ad Hoc Networks Based on Data Utility," Mobile Information System, vol. 3, no. 1, pp. 19-37.
10. S. Lim, W. Lee, G. Cao, and C. R. Das (2006), "A Novel Caching Scheme for Improving Internet-Based Mobile Ad Hoc Networks Performance," Elsevier J. Ad Hoc Networks, vol. 4, no. 2, pp. 225-239.
11. T. Moriya and H. Aida (2003), "Cache Data Access System in Ad Hoc Networks," Proc. Vehicular Technology Conf. (VTC '03), vol. 2, pp. 1228-1232.
12. T. Hara (2002), "Cooperative caching by mobile clients in push based information systems", Proc. CIKM'02, pp. 186-193.
13. NS Notes and Documentation, http://www. isi. edu/nsnam/ns/, 2008.
14. Y. Du and S. Gupta (2005),"COOP – A Cooperative Caching Service in MANETs", Proceedings of the IEEE ICAS/ICNS , pp. 58–63
15. Yu Du, Sandeep K. S. Gupta and Georgios Varsamopoulos (2009), "Improving on-demand data access efficiency in MANETs with cooperative caching, AdHoc Networks", 7 (3), pp. 579-598.

Manets Caching Cache Sharing Data Retrieval Cache Replacement