Normality Test to Detect the Congestion in MANET by Using OLSR Protocol

Mobile Ad hoc Network (MANET) considers as simple network that use the wireless communication between difference wireless devices named as nodes. MANET has many challenges in its functions due to absence of fixed infrastructure and autoconfiguration. Optimized Link State Routing Protocol (OLSR) is proactive MANET routing protocol dedicated to the large network density. However it can be affected by the congestion that decrease its performance by losing packets, taking more delay to receive packets and also minimize the throughput of the protocol. In this paper, we propose new method reckons on Normality Test that applied in statistic domain to detect the congestion in OLSR protocol without any modification in the algorithm and without any other additional control messages. To detect the congestion in OLSR we use Shapiro_Wilk (W) method to analyze the results of Throughput following two scenarios that leads to the congestion.