This paper presents integration architecture
between the wireless wide-area network (WWAN) and wireless
local-area network (WLAN) in hot spots. Since the capacity of
IEEE 802.11g network is significantly higher than the
corresponding WWAN, the integration of two networks is very
beneficial. Integrated network can provide seamless mobility
between two access technologies and allow continuity of existing
sessions. Wide-area coverage can be achieved with proper
roaming agreements between different service providers.