The increasing diffusion of wireless-enabled portable devices is pushing towards service provisioning over dense Mobile Ad-hoc NETworks (MANETs), i.e., limited spatial regions, such as shopping malls, railway stations and airports, where a high number of mobile wireless peers autonomously cooperate, without the need for statically deployed network infrastructures. Dense MANET deployment scenarios can take advantage of high node population to replicate common-interest resources to increase their availability, by overcoming the unpredictable node exit from the dense region. The paper proposes a lightweight middleware, called REDMAN, to manage, retrieve and disseminate replicas of data/service components made available by cooperating nodes in a dense MANET. In particular, the paper focuses on the REDMAN original solutions both to determine the nodes belonging to dense MANETs without exploiting any positioning system and to dynamically elect a suitable replica manager node in charge of enforcing the desired resource replication degree in a lazy consistent way. Experimental results show that REDMAN solutions are lightweight and effective in dense MANET scenarios with almost constant node density and even high node mobility.
Lightweight Replication Middleware for Data and Service Components in Dense MANETs
BELLAVISTA, PAOLO;CORRADI, ANTONIO;MAGISTRETTI, EUGENIO
2005
Abstract
The increasing diffusion of wireless-enabled portable devices is pushing towards service provisioning over dense Mobile Ad-hoc NETworks (MANETs), i.e., limited spatial regions, such as shopping malls, railway stations and airports, where a high number of mobile wireless peers autonomously cooperate, without the need for statically deployed network infrastructures. Dense MANET deployment scenarios can take advantage of high node population to replicate common-interest resources to increase their availability, by overcoming the unpredictable node exit from the dense region. The paper proposes a lightweight middleware, called REDMAN, to manage, retrieve and disseminate replicas of data/service components made available by cooperating nodes in a dense MANET. In particular, the paper focuses on the REDMAN original solutions both to determine the nodes belonging to dense MANETs without exploiting any positioning system and to dynamically elect a suitable replica manager node in charge of enforcing the desired resource replication degree in a lazy consistent way. Experimental results show that REDMAN solutions are lightweight and effective in dense MANET scenarios with almost constant node density and even high node mobility.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.