Usman Ismail

Learn More
Increased AP density in enterprise WLANs leads to increasing RF interference and decreasing performance. An important step towards mitigating this problem is to construct precise RF maps in the form of a conflict graph. Prior work on conflict graph construction, mostly using bandwidth tests [17], suffers from two problems: a) It is limited to static(More)
Rural Internet kiosks typically provide weak security guarantees and therefore cannot support secure web access or transaction-oriented applications such as banking and bill payment. We present a practical, unobtrusive and easy-to-use security architecture for rural Internet kiosks that uses a combination of physical and cryptographic mechanisms to protect(More)
Keywords: Ictd Mechanical backhaul Delay-tolerant networks Architecture Rural communication WiFi a b s t r a c t Rural Internet kiosks in developing regions can cost-effectively provide communication and information services to the poorest sections of society. Yet, a variety of technical and non-technical issues have caused most kiosk deployments to be(More)
Internet kiosks typically provide weak security guarantees and therefore cannot support secure web access or transaction-oriented applications such as banking and bill payment. We present the design and implementation of a practical, unobtrusive and easy-to-use security architecture for KioskNet, a system for low-cost rural Internet kiosks. Our system uses(More)
Enterprises are increasingly deploying Wireless LANs to provide mobile access to users in corporate offices. However, existing enterprise WLANs are far from being truly mobile. In particular, they do not adequately support continuous mobility, where users access the network on-the-go. Furthermore, WLANs that do provide continuous mobility support require(More)
  • 1