Congestion detection algorithm using DiffProbe

Recently NGN standard activity is going on to provide the end-to-end QoS guarantee in the IP transport network. However, monitoring the one way delay performance in the packet network has no clear solution. In the previous work [1], we introduced an one-way delay performance monitoring mechanism called DiffProbe. We introduced the basic concept and the implementation details in the MPLS core network. In [12], we provided an analytical mode of the scheme and investigated the performance of the propose delay measurement mechanism. In this paper, we propose a congestion detecting mechanism. The numerical result shows that our simple proposed congestion detection algorithm can detect the network congestion efficiently.