| 題名 | DASR: Distributed Adaptive Service Replication for MANETs |
| 著者 | *Asaad Ahmed, Keiichi Yasumoto (Graduate School of Information Science, Nara Institute of Science and Technology), Naoki Shibata (Department of Information Processing and Management, Shiga University), Tomoya Kitani (Division of Global Research Leaders, Shizuoka University), Minoru Ito (Graduate School of Information Science, Nara Institute of Science and Technology) |
| Page | pp. 823 - 835 |
| Keyword | Mobile Ad-hoc networks, Service Availability, Service Replication |
| Abstract | Mobile Ad Hoc Networks (MANETs) can be used to provide mobile users ability to use services when traditional infrastructure-based networks are unavailable either due to prohibitive costs (e.g. in remote and hard to reach locations) or infrastructure-less situations (e.g. after a destructive disaster like an earthquake). The challenging task in such dynamic environments is how to improve the service availability. An effective strategy is replicating a service at some nodes distributed across the network. However, service replication can considerably impact the system energy consumption. Since mobile devices have a limited amount of battery, a dynamic and efficient service replication becomes necessary to support such environments. In this paper, we propose a distributed service replication scheme for achieving high service availability and minimizing the energy consumption for MANETs. Our proposed method called Distributed Adaptive Service Replication (DASR) divides the whole network into disjoint zones at most 2-hops in diameter and builds a dynamic replication mechanism by using this zone-architecture to facilitate and manage service replication process. Through simulations, we have confirmed that our approach can achieve higher service availability and lower energy consumption cost than an existing method. |