In this paper, a credit-based user authentication scheme is proposed for delay tolerant
mobile wireless networks. The proposed authentication scheme isolates the uncertain
network condition in the high-delay wireless backhaul with high error rate, and accelerates
the overall authentication process when the mobile terminal roams in the visited network.
The performance evaluation demonstrates that the proposed credit-based authentication
scheme is secure and effectively reduces the overall delay and overhead in user …

Wireless Internet has become increasingly popular due to anywhere anytime access feature.
The Internet architecture was designed underlying the existing of the end-to-end path
connection. The promise of wireless Internet networks is to provide roaming users
connectivity anywhere anytime. However, quality of service (QoS) is still an open issue in
wireless networks, which are characterized by possible intermittent connectivity and large
transmission delays, due to user mobility, sparse mobile node distribution, link failures …