A Generalized Satisfaction Oriented Bandwidth Management

While there are other criterias to measure QoS, bandwidth is of interest to the largest number of applications. Bandwidth allocation becomes more difficult in future multi-service networks, especially for QoS guarantee. Hence efficient bandwidth allocation is among the most important open issues in the network traffic control aiming to offer a QoS guarantee. With new QoS concepts: user/flow satisfaction, this paper introduced a user oriented QoS model and a generalized bandwidth allocation scheme which actively adapts to the dynamics of the network. Our approach effectively exploits all available bandwidth resources. The QoS policy for multimedia traffic composed of both unicast and multicast streams has great flexibility that effective QoS differentiation can be guaranteed in both heavy and light load conditions. For heavy load cases, the allocation results satisfies all users as much as possible. For light load cases, all redundant bandwidth are fully exploited while distinct QoS differentiation is kept. Based on our scheme, a soft system capacity similar to the one in CDMA networks is provided