Inter-domain QoS signaling under mobility

This paper deals with the problem of QoS signaling across multiples domains in a context of topological changes due to mobility. Data path changes caused by mobility can degrade severely the service continuity to mobile terminals considering the end-to-end QoS inter-domain path reestablishment. We propose an efficient NSIS-based scheme to allow end-to-end QoS path maintenance under mobility. The domains are controlled by central resource managers acting as bandwidth brokers. The scheme addresses two open issues in the area: (a) the integration of NSIS with Hierarchical Mobile IP including anchor points collaboration to QoS signaling, and (b) the use of NSIS in an hybrid on and o/f-path context, exploring the common off-path points to improve signaling. The signaling procedure aims to reduce the impact of mobility in the time to setup new QoS paths and the time to tear down unused resources.