A QoS Scheme for Multimedia Contents in Diffserv. Networks

This paper proposes an approach to transmit of multimedia contents effectively in a rapidly changing Internet environment. At present, guaranteeing QoS in network has become an important subject to consider. When transmitting AF packets in a multi-DiffServ network environment, A network gives priority in an order of AF1, AF2, AF3 and AF4; on the other hand, B network reverses the order with priority of AF4, AF3, AF2 and AF1. In this case, AF1 packets that received the best quality service in A network will receive the lowest in B network, which results in dropping packets in B network and vice versa. This paper suggests a way to guarantee QoS between hosts by minimizing the loss of AF packet class when one network transmits AF Class packets to another network with differing principles.