Automata Based Cooperative Caching Scheme to Improve Data Access in Disruption Tolerant Networks
Disruption Tolerant Networks (DTN?s) are the opportunistic networks that are characterized by higher and unpredictable node Mobility, irregular network connectivity, long delay and low node density. Data access is thecommon issue inDTN because of its opportunistic contacts. The common technique used for improving the data access is Caching. In this paper we propose a Cooperative Caching scheme based on Learning Automata (LA) that will reduce the data access delay by caching data at multiple nodes. The underlying idea is to select a set of nodes called as Network Central Locations (NCL) or Caching Node (CN)that cache data and coordinate among themselves to provide data access to the requestor. The challenge lies in two facts like determining the caching location among many nodesand in generating the probabilistic response to the requestor in order to avert resource wastage there by providing efficient data access.
Keywords: Disruption Tolerant Networks, Learning Automata, Cooperative Caching, Connected Dominating Set, Network Central Location, Relay Node, and Cache Replacement.
Conference Name: 11th International Conference on Science Engineering and Technology
Conference Date: 03, November 2015 - 04, November 2015
Paper ID: SET007