Due to the ever-growing popularity mobile devices of various kinds have received worldwide, the demands on large-scale wireless network infrastructure development and enhancement have been rapidly swelling in recent years. A mobile device holder can get online at a wireless network access point, which covers a limited area. When the client leaves the access point, there will be a temporary disc...

In view that authentication has made a significant determinant in handover delay, this paper presents a fast authentication mechanism for mobile stations roaming within a WiMAX–WLAN interconnected environment. Incorporating a key reuse design that prevents repeated transactions at a remote server, our mechanism distributes security contexts ahead of handover to a local trusted key holder which ...

Handover during mobile communications is becoming the general task in heterogeneous wireless networks. To make handover efficient and faster without leaking data with less delay is prime objective. Since from last two decades, many on-going research studies presented to achieve these goals. Still many research works going on to claim more robust performance. In this paper presenting new method ...

Network security provides the network with the authorization of access to data in a network, which is prohibited by the network administrator. Proxy Mobile IPv6 (PMIPv6) supports mobility management without the participation of mobile nodes it support mobility management in any mobility-related signaling. In comparison with other existing methods, PMIPv6 has decreased signaling overhead and the...

Vehicular Ad-Hoc Network (VANET) is an emerging area of wireless networks which allows vehicles to communicate enabling Intelligent Transportation System (ITS). Immense amount of research is going on both by industry and academia. In vehicular communication there occurs frequent handover because of the high speed of vehicles and hence there is always a requirement of secure and fast authenticat...

Fourth generation mobile communication systems are characterized by heterogeneous access networks and IP-based transport technologies. Different access technologies give users great flexibility in choosing services, which can be different in QoS support, business models, and service providers. Realization of seamless handovers to the best network section while considering QoS and AAAC (Authenti...

When Mobile IPv6 is deployed in commercial network, a mobile node needs AAA services for authentication, authorization and accounting. AAA and Mobile IPv6 are operated independently. Hence schemes which merge these protocols have been emerged. These schemes enable the mobile node to establish a security association between the mobile node and a home agent, and to perform a home binding update d...

Establishing secure access and communications in a hierarchical mobile IPv6 (HMIPv6) network, when a mobile node is roaming into a foreign network, is a challenging task and has so far received little attention. Existing solutions are mainly based on public key infrastructure (PKI) or identity-based cryptography (IBC). However, these solutions suffer from either efficiency or scalability proble...

-WiMAX (Worldwide Interoperability for Microwave Access) is an emerging technology that can provide wireless broadband access at the data rates of 70 Mbps over 50 kilometres to both home and business customers. WiMAX is cost effective and offers higher data rates than other wireless networks. It supports both fixed and mobile applications. WiMAX is easier to deploy as compared to other networks...