DiffServ resource allocation scheme for IP micromobility networks

The paper presents a scalable DiffServ resource allocation scheme with per-hop and handoff probability featured resource reservation for IP micromobility networks. IP micromobility protocols support fast, seamless, local mobility but they lack a suitable QoS management mechanism. Our proposed scheme extends the DiffServ model for admission control and on-demand resource reservation under IP micromobility. Resource reservation for handoff uses a per-hop scheme which only needs to reassign resources between access point and cross-over node. This reservation has no impact on handoff, so long as the reservation request is fulfilled before the handoff occurs. Also, the feature of handoff probability is taken into account to obtain more precise resource utilization. All resource allocation is based on the DiffServ PHB group interworking flexibly with the IP backbone. The performance analysis and evaluation of our scheme is achieved via modeling and simulation in terms of handoff dropping probability (HDP) and call blocking probability (CBP).