Efficient Cache Sharing Protocol for Mobile Nodes

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.