A dynamic admission control scheme in a DiffServ domain

Abstract

Gaining lessons from the IntServ/RSVP experiences, more simplified differentiated services (DiffServ) has emerged as the core network architecture with enhanced scalability for implementation and deployment. In order to provision differentiated services on a DiffServ domain, it is necessary to provision resources appropriately in the control or management plane of the DiffServ domain, in addition to the data plane service protocols implementation. But, efforts in the control or management plane are not matured in the DiffServ domain. While the static provisioning may be sufficient for the quantitative traffic, the qualitative provisioning is more difficult to support, so that the provisioning parameters should be estimated based on the accurate traffic characteristics, which can be obtained from possibly real time measurements. The paper aims to resolve dynamic resource provisioning, especially for the qualitative traffic by measurement-based admission control scheme having some implicit signaling component using control plane DSCPs. The proposed scheme has been simulated on the ns-2 simulator, using traffic with burst characteristics. The results shows that the proposed scheme has the capability to support a fine-grained, dynamic admission control with flexibility in DiffServ domain.