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The promise of ubiquitous computing is a future in which highly specialized, embedded computing devices operate seamlessly within the everyday environment and are transparent to users. Realizing this vision will require next-generation networks to support mobile multimedia devices with capabilities well beyond those of today's handsets. These networks will exploit wideband radio access technologies and IP-based protocols to provide IP transparency-all network elements support IP; mobility management for a globally networked environment; unique addressing for every user; personalization of information; positioning to enable location-dependent services; and end-to-end security. Such functionality requires more than providing wireless Internet access and e-mail.
Josef F. Huber (Tue,) studied this question.