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The move towards an increasingly heterogeneous infrastructure has been one of the directions followed by most mobile operators in recent years. Here, one of the problems still waiting for a solution is how to enable multi-mode mobile terminals to freely roam between the different wireless systems used by the network operator for providing access to its users. The IEEE 802.21 is just one of the standardization...
Handover between different wireless mobile networks is a key constraint for achieving subscribers satisfaction and enhancing the overall performance. More precisely, mobile subscribers wish to enjoy ubiquitous service availability while being sure of keeping the required security level and a comparable performance level when changing the aceess network. In this paper, we address this issue by proposing...
Nowadays wireless packet data services are provided over wireless MAN (WMAN) with high data rate while 3G cellular networks provide wide-area coverage with low data rate. The interworking of mobile WiMAX and 3G networks is indispensably required to serve users who need both high-speed wireless access as well as wide-area connectivity. In this paper, we propose a cross-layer optimization of vertical...
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