An overview of quality of service routing for next-generation high-speed networks: problems and solutions

摘要: The upcoming gigabit-per-second high-speed networks are expected to support a wide range of communication-intensive real-time multimedia applications. requirement for timely delivery digitized audio-visual information raises new challenges next-generation integrated services broadband networks. One the key issues is QoS routing. It selects network routes with sufficient resources requested parameters. goal routing solutions twofold: (1) satisfying requirements every admitted connection, and (2) achieving global efficiency in resource utilization. Many unicast/multicast algorithms have been published, they work variety constraints. Overall, can be partitioned into three broad classes: source routing, distributed (3) hierarchical algorithms. We give an overview problem as well existing solutions. present strengths weaknesses different strategies, outline challenges. also discuss basic each class, classify compare them, point out possible future directions area.