Home // International Journal On Advances in Networks and Services, volume 5, numbers 1 and 2, 2012 // View article
Authors:
Constandinos Mavromoustakis
Muneer Masadeh Bani Yassein
Keywords: bi-directional recursive data-replication; partially synchronized mobility scheme; object sharing scheme; reliability and availability of resources; resource exchange efficiency; evaluation through simulation
Abstract:
Recent research in opportunistic networks address the diffusion policy and the practicality considerations in utilizing device-specific applications. Intermittent connectivity between mobile nodes and the random behavioral patterns of the users, make modeling and measuring the performance of opportunistic networks very challenging particularly in the case of file/object sharing among these devices. As the cache-and-forward replication policy plays a major role targeting the availability of requested resources, there should be a mechanism for controlling the minimization of the redundant replicas and the uncontrolled diffusion effects onto the communicating nodes. In this work the diffusion policy of requested replicated objects is examined with regards to the probabilistic synchronized movement of the devices, quantifying the parameters that affect the reliable transmission and the availability of requested resources by any node. The assigned scheme takes into consideration the movement synchronization of the moving devices and applies a recursive adaptive caching cooperation scheme in community-oriented relay regions. The scheme also uses the Message Ferry (MF) mobile Peer in a bi-directional mode, in order to enable higher degree of reliability in the availability of the requested resources. Conducted simulation experiments using real-time traffic traces show that the proposed scheme offers high throughput and reliability response for sharing resources on-the-move while it minimizes the redundancy of replications.
Pages: 78 to 90
Copyright: Copyright (c) to authors, 2012. Used with permission.
Publication date: June 30, 2012
Published in: journal
ISSN: 1942-2644