期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2015
卷号：4
期号：10
页码：3976-3981
出版社：Shri Pannalal Research Institute of Technolgy
摘要：Mobile ad-hoc networks (MANETs) depends on network cooperation schemes to work properly. It assume that mobile nodes voluntary cooperate in order to work properly. Nevertheless, if nodes have a selfish behaviour and are unwilling to cooperate, the overall network performance could be seriously degraded. The use of watchdogs is a well-known mechanism to detect selfish nodes. Sometimes watchdogs can fail, generating false positives and false negatives that can induce to wrong operations. In this paper we propose a collaborative contact-based watchdog approach, which is based on the fast diffusion of selfish nodes awareness when a contact occurs. Then, we introduce an analytical model to evaluate the time of detection and the overhead of our collaborative watchdog approach for detecting selfish nodes.
