IP mobility with high speed access and network intelligence

The original idea of mobile IP (MIP) is to provide mobile users the ability to access the Internet anywhere, with an identical IP address. With rapid changes in both technology and the communication environment, wide bandwidth and low cost wireless LAN (WLAN) have emerged as a competitive choice not only for wireless high speed Internet access but also for wireless voice network access. To support mobility with quality of service (QoS), MIP has been found to be inefficient for both data and time sensitive services, such as voice-over-IP (VoIP). In our paper, we first focus on the deficiencies of the MIP and other micromobility approaches found in the literature. We then propose an architecture for network layer mobility support, using always on high speed access and a network-based mobility manager, termed as network server or gateway. We believe that the proposed architecture obviates the need of MIP for IP mobility.