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With the explosive proliferation of WLANs (wireless local area networks), their inter-working with other existing wireless mobile networks, such as 3G cellular networks, is being actively promoted by carriers to achieve ubiquitous broadband communication. Fast authentication is essential to achieve seamless handover in such an environment. Existing fast(More)
As development of highspeed network, intelligent multimedia workstation and large-scale storage device technologies, distributed multimedia information services are now making their appearance. However, despite the int,ense media attention currently being showered on multimedia, many obstacles remain to be overcome before practical, widespread applications(More)
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