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A reputation system for MANETs is described that attempts to deduce nodal trustworthiness (forwarding behaviour) from observed end-to-end path performance. The trustworthiness deduction algorithm produces interval estimates and works well if node misbehaviour is not selective with respect to traversing paths. Nodal reputation levels are next calculated in the spirit of generous tit-for-tat so as to...
In the future, mobile ad hoc network (MANET) is predicted to play more important roles for device communication with self organized infrastructure. Effectiveness of routing protocols and congestion control mechanisms, highly determines the performance of MANET. Previous research in protocol development did not pay much attention in selecting the appropriate protocol on other layers. Therefore, the...
Mobile ad hoc network (MANET) is a distinct kind of network where the nodes are connected by way of wireless medium and without any infrastructure. Nodes in the network are fully dependent on other nodes so as to complete the mission successfully. In addition to this, nodes are moving freely and make dynamic topology. Moreover these types of networks can be easily constructed whenever and wherever...
Misbehaving nodes, including malicious and selfish ones, will disturb the cooperation among all wireless nodes in a mobile ad hoc network (MANET). Overhearing and reputation based cooperation schemes have been used to detect and isolate the misbehaving nodes as well as to force them to cooperate. These schemes worked well in previous publications. However, in this paper, we propose an on/off misbehaving...
In wireless AdHoc networks, all its nodes behave as routers and take part in its discovery and maintenance of routs to other nodes. Therefore, the cooperation of nodes is very important. With presence of selfish or malicious nodes the performance of the network may greatly degrade. In order to enforce the cooperation between the nodes in the system many cooperation schemes have been proposed. This...
The use of small portables and mobile devices has made MANETs (mobile ad hoc networks) very popular. A MANET is a network composed by a group of mobile nodes without any fixed device or a central coordination. They work in an open net and their collaboration is the sole means to allow communications and the survival of the MANET itself. A critical issue is to assess the behaviour of the nodes that...
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