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Review on QoS Improvement with MPLS Mechanism in NGN

Kanchan Dhuri , Alam Shaikh

This review paper mentions that the appearance of new uses underlines the need for a greater quality of service (QoS) not only for conveying accurately or increasing certain traffic, but also conveying it as soon as possible, which implies a network management even more complex. These lead to development of technology known as Multi- Protocol Label Switching (MPLS). Due to the MPLS technology mechanisms traffic engineering, QoS and security become possible for IP network to be efficient. Various methods of engineering of traffic for IP networks have been specified for several years (such as DiffServ (Differentiated Services), IntServ/RSVP (Integrated Services / Resource Reservation Protocol) to get end-to-end quality of service but MPLS is found simple, scalable and better among them. This allows the traffic in network to manage in a more effective way and avoid the cases of congestion. In this review paper principle operation of MPLS is discussed. We strongly focus on the importance of the MPLS used for the transport of the IP datagram and the traffic as well as underlined the advantages of MPLS utility in the IMS platforms to provide guarantees of QoS from beginning to end. At the end of this review paper simulation results from an MPLS network is mentioned.