MobiCom poster: QoS framework for supporting intra-domain mobility

In recent years, various intra-domain mobility management protocols [1, 3] have been proposed with the goal of improving the performance of Mobile IP by reducing the signaling load and handoff latency within the hierarchical access network. Although mobile applications on future all-IP 4th generation wireless networks are expected to require varying levels of Quality of Service (QoS) guarantees, these intradomain mobility protocols do not currently provide any integrated QoS support. We have recently proposed Intra-Domain Mobility Management Protocol (IDMP) [2] for managing IP mobility within a cellular access network. This paper presents an IDMPbased QoS framework, which uses a modified form of the Differentiated Services architecture, with a centralized Bandwidth Broker (BB) performing dynamic admission control and resource provisioning for different traffic classes. While experimental results demonstrate that our IDMP-based QoS mechanism is able to support differential performance guarantees for mobile users with fairly low latency overheads, analytical derivations show that this QoS support can be achieved with only a marginal increase in the signaling cost, especially over the bandwidthconstrained wireless links. Cellular IP [1](without any QoS support) as an alternative and representative micro-mobility (or intra-domain) protocol has been used for comparative performance study.