期刊名称：International Journal of Computers and Communications
印刷版ISSN：2074-1294
出版年度：2013
卷号：7
期号：4
页码：107-115
出版社：University Press
摘要：The evolution towards converged access networks and the importance of quality of experience at an affordable cost brings the need for access networks that can offer a wide range of services not currently available to the desired extent. Legacy networks used explicit signaling that traversed all nodes along the path to book resources before the launch of the media stream. This approach does not scale and cannot provide adequate resource control and Service Level Agreement (SLA) management in scalable and autonomous packet networks. Still, the need to reserve resources in advance remains since real-time services have limited, if any, means of adjusting their rates to the prevailing network conditions. Hence, in order to preserve customer satisfaction, the traditional preventive approach that reserves resources for the duration of the session is the only option. This paper proposes a measurement based approach to derive the flow resource needs and then trigger the Resource and Admission Control enriching the network with implicit admission control. We evaluate the proposed methodology against other approaches that employ measurement based Effective Bandwidth estimation and demonstrate its noticeable performance in terms of achievable resource utilisation, accuracy and practical feasibility.
