Localized quality of service multi-path routing in VoIP networks

Abstract

Abstruct-The localized QoS routing techniques were proposed to achieve acceptable performance without exchanging global state information over the network. In such techniques the source nodes can estimate the network state and make the routing decision locally, hence reducing the signaling traffic at core routers and other network elements. However, using only locally collected information to make routing decision is not a completely reliable technique to achieve trusted QoS performance. The Localized Multi-Path Selection (LMPS) approach is proposed in this paper to overcome the common drawbacks of the localized techniques. The LMPS technique is a multi-path selection algorithm, which selects paths that are capable of satisfying the bandwidth requirement of the call, while at the same time trying to avoid the overloaded links to minimize the overall blocking ratio in the network.