Internet QoS Differentiation

Recently, many researchers have explored to provide a service architecture with strong service differentiation and low complexity in IP networks. Proportional differentiated services architecture is a good example, which has been an effort to quantify the differentiation between classes of traffic and to enforce that the ratios of delays or loss ratesof successive priority classes be roughly constant.In this book, we present a novel service architecture with strong service guarantees and high scalability in IP networks. The main contribution of this book is the definition and realization of a new servicearchitecture which can offer absolute and relative differentiation of packet delay and loss to classes of traffic. We devise and analyze mechanisms that implement the proposed service architecture, and demonstrate the effectiveness of the approach through numerical analysis and simulation.To enable a new service architecture, we introduce a differentiated service architecture withtriple collaboration which consists of major primitives:(1) an Active Queue Management scheme, (2) a Scheduling mechanism, and (3) a TCP Congestion Control mechanism.