A delay-efficient rerouting scheme for VoIP traffic

Routing the packet flows through the network is a very important function and if done efficiently, it can contribute appreciably towards ensuring the desired levels of Voice over IP (VoIP) quality. Current implementations do no attempt to reconfigure the path of the flows in the case of loss of quality. We propose a dynamic rerouting scheme called the BPAR scheme for voice traffic, in which the paths of packet voice flows are dynamically reconfigured based on network probing and rerouting. We performed a series of emulations to evaluate the performance of the BPAR scheme. For GSM-compressed traffic, the dynamic reconfiguration proposed in this study shows an improvement of 12% reduction in average delay, and also a better connection acceptance (16% high) than other static methods under conditions of network congestion.