Mobile IP supports wide area mobility for mobile systems in the Internet. RSVP (Resource ReSerVation Protocol) reserves resources in the network so that the transmission of data with a certain quality of service (QoS) within the Internet becomes possible. This work analyses how both approaches work together to support the transmission of data with a certain QoS to mobile systems. Additionally, the analysis considers the indirect transport model which splits a connection between a mobile system and a fixed system into two separate subconnections: One for the wired link and another one for the wireless link. In this way, this approach improves the throughput between both systems.

When taking QoS into account, the analysis of Mobile IP shows that a mobile system looses its connection to the Internet for quite a long time, when it moves to another place, as long as it is not nearby its home network. This work proposes a protocol as an enhancement to Mobile IP to reduce this time of interruption: the so-called Fast-Forwarding Protocol.