New Technologies for Integrated Public Wireless Network

 Milind M. Buddhikot

 The third-generation (3G) wide area wireless networks and 802.11 local
 area wireless networks possess complementary characteristics. 3G
 networks promise to offer always-on, ubiquitous connectivity with
 relatively low data rates. 802.11 offers much higher data rates,
 comparable to wired networks, but can cover only smaller areas,
 suitable for hot-spot applications in hotels, museums and airports.
 The integration of these two networks shows promise of creating a
 public wireless networks that offers high performance, ubiquitous
 wireless data and voice services.  This talk highlights new
 technologies that enable such high performance integration.

 We will first discuss basic service models and network architectures
 for integration and then describe four technologies designed and
 implemented as a part of the on-going IOTA project in Bell Labs: (1)
 a new network element called IOTA integration gateway deployed in the
 WLAN networks and associated client software, (2) a Mobile IOTA
 gateway for 802.11 hotspots on trains, buses and other temporary
 network setups (outdoor events, ships in port, temporary building
 moves, convention centers, emergency setups, etc), (3) a efficient
 authentication and dynamic key exchange protocol called Shared key
 Exchange (SKE), and (4) Managed, secure, ad-hoc relays called
 Iota-Clusters for 3G and 802.11 range extension.

 The talk may be followed by the demonstration of MobileIOTA
 technology.