Performance analysis of wireless differentiated Internet service in IMT-2000 system

In the case of the current best-effort service, all packets are treated as in the same class. Whatever the incoming packet is, packets are stored a buffer and served in incoming order. The differentiated service (diffserv) schemes proposed previously were just limited for the price differentiation in the current Internet service. In this paper, two diffserv schemes such as premium service and assured service are applied to the Internet service of the IMT-2000 system. Instead of the price paid by service users, the quality of service (QoS) characteristics of each traffic are used for the service level classifier in those schemes. Extended models of these service schemes are described and analyzed in the consideration of wireless voice/data integrated packet networks. Then we can draw conclusions that one of these schemes, assured service, makes the blocking probability and the delay of packets decrease and the other scheme, premium service, guarantees QoS of voice packets at the cost of QoS of delay packets.