期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2012
卷号：3
期号：1
页码：3047-3052
出版社：TechScience Publications
摘要：Estimating link quality during multicast routing is vital for maximizing throughput in Wireless mesh networks. To efficiently forward data all mesh nodes must collaborate for computing path metric. If metric computation, propagation, and aggregation is based upon the assumption that all nodes are genuine then this will lead to haywire in adversarial networks where compromised nodes act maliciously. To counter the attacks of the compromised nodes earlier a combined measurement-based detection and accusation-based reaction techniques were implemented instead of aggressive path selection method. Both the attacks and defense were implemented using ODMRP protocol. ODMRP offers more efficient packet forwarding, but the transmissions are much more unreliable due to its difficulty of maintaining forwarding mesh under mobility, which leads to a lower packet delivery ratio. The multicast group joining delay of ODMRP is also much higher. To address these issues we propose to use an efficient and scalable geographic multicast protocol, EGMP in combination with the above security measures instead of ODMRP. It has significantly lower control overhead, data transmission overhead, and multicast group joining delay. We simulate the achievable throughput and security using our proposed mechanism and as certain its claim.
关键词：Wireless mesh networks; Routing;multicast; and protocol.ion.on
