QoS and micromobility coupling integrated with UMTS

QoS is one of the big challenges the Internet protocol designers are facing during the last few years. The complexity of the problem requires network overprovisioning to avoid bottlenecks. However, in wireless networks in which the spectrum is very expensive, such an approach does not seem economically viable and needs to offer QoS guarantees. In addition, the adoption of an all-IP network paradigm as the basis for the future wireless networks is putting a great demand on QoS mechanisms that can deal with the mobility of the nodes without compromising the provided QoS. We present an integration of the RSVP protocol with the HMIP micromobility protocol to improve the QoS guarantees which are given in micromobility scenarios. We demonstrate, through extensive simulations, how this approach outperforms both the TCP and UDP transport in the traditional use of RSVP for these scenarios.