SPIRO THE TECH GURU

Back

COCOWA: A COLLABORATIVE CONTACT-BASED WATCHDOG FOR DETECTING SELFISH NODES

By Admin on

DETECTING SELFISH NODES

                                 Mobile ad-hoc networks (MANETs) assume that mobile nodes voluntary cooperate in order to work properly. This cooperation is a cost-intensive activity and some nodes can refuse to cooperate, leading to a selfish node behavior. Thus, the overall network performance could be seriously affected. The use of watchdogs is a well-known mechanism to detect selfish nodes. This is specially important on networks with sporadic contacts, such as delay tolerant networks (DTNs), where sometimes watchdogs lack of enough time or information to detect the selfish nodes. Thus, we propose collaborative contact-based watchdog (CoCoWa) as a collaborative approach based on the diffusion of local selfish nodes awareness when a contact occurs, so that information about selfish nodes is quickly propagated.


COCOWA: A COLLABORATIVE CONTACT-BASED WATCHDOG FOR DETECTING SELFISH NODES


Co-operative networking is currently receiving significant attention as an emerging network design strategy for future mobile wireless networks. The cooperation on these networks is usually contact based. Mobile nodes can directly communicate with each other if a contact occurs (that is, if they are within communication range). Supporting this cooperation is a cost intensive activity for mobile nodes. Thus, in the real world, nodes could have a selfish behaviour, being unwilling to forward packets for others. Selfishness means that some nodes refuse to forward other nodes’ packets to save their own resources.  


SPIRO Google Plus