QoS Management for All-IP Core Networks

Abstract

This paper discusses the core network design under the Budget-Based management infrastructure, BBQ1, which is designed for All-IP networks to offer end- to-end QoS assurance to their services. Under BBQ scheme, the quality bound of each component network is controlled based on a calculated budget plan. End-to-end QoS is assured by a global QoS management agent. The management issues include software architectures in different layers, class based admission and resource reservation policies, as well as resource management infrastructure, policies, and mechanisms. The objective of this infrastructure is to facilitate network operators to tune their networks with a great flexibility and scalability to achieve their own operational objectives. One of the major components in an All-IP network is the backbone network which consists of some core network. In this paper, the design philosophy of core networks under BBQ will be discussed in details.