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A Co-Operative Cache Algorithm for Improving Data Accessibility in MANETS C.H.Rammanogerlokiya 1
| Content Provider | CiteSeerX |
|---|---|
| Author | Jamaesha, S. Syed Tamilnadu, Coimbatore |
| Abstract | nature, Links between nodes may constantly change as nodes move around, enter or leave the network, and therefore, a reliable caching scheme is more difficult to achieve. This project proposes a server based architecture to provide efficient and reliable caching in MANET environments which also minimizes the delays in answering node queries. Nodes can take on one of two possible roles: Caching nodes (CNs) and Query directories (QDs). A QD’s task is to cache queries submitted by the requesting mobile nodes, while the CN’s task is to cache data items (responses to queries). The heart of the system is the nodes that cache submitted queries. The queries are used as indexes to data cached in nodes that previously requested them. The consistency scheme is server-based in which control mechanisms are implemented to adapt the process of caching a data item and updating it by the server to its popularity and its data update rate at the server. The system implements methods to handle disconnections of QD and CN nodes from the network and to control how the cache of each node is updated or discarded when it returns to the network. This Architecture implements a pro-active Load distribution scheme to minimize the delay. Moreover, ns2 simulations were performed to measure several parameters, like the average data request response time, cache update delay, and hit ratio. The results demonstrate the advantage of the proposed scheme over existing systems. Keywords- Data caching, cache consistency, invalidation, server- |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Manet C.h.r Improving Data Accessibility Co-operative Cache Algorithm Data Item Keywords Data Caching Pro-active Load Distribution Scheme Caching Node Ns2 Simulation Node Query Average Data Request Response Time Reliable Caching Cache Update Delay Cache Consistency Query Directory Control Mechanism Consistency Scheme Mobile Node Cn Node Reliable Caching Scheme Manet Environment Several Parameter Qd Task Possible Role Data Update Rate Cn Task |
| Content Type | Text |
