Cross-Layer Approach to Improve the Monitoring Process for Mobile Ad Hoc Networks Based on IEEE 802.11

The monitoring process consists in evaluating the behaviour of nodes in networks in order to detect if the monitored nodes well-behave or misbehave. Many existing solutions deal the problem at each layer separately. Actually new kinds of misbehaviour attacks are cross-layer. So, such smart misbehaviours cannot be detected at the level of one layer. In this paper, we propose a new cross-layer approach based on physical, MAC and routing layers for a monitoring mechanism. An analytical model is proposed to illustrate the parameters´ effect on these different layers. The impact of the signal to noise rate (SNR), the distance between monitor and monitored nodes are clearly introduced. Moreover, the difference between the carrier sense, the interference and the transmission ranges is taken into account in our model. The simulations´ results show the effectiveness of the proposed analytical model, we reach until 90% of observation´s correction in some cases.