Here are several topics that we would like to discuss and explore at the workshop. These are wireless and mobile infrastructure, security, applications and services, and mobile payments. Due to our current expertise and interest, we would like to focus on infrastructure and security issues and how problems of access, coverage, roaming, end-to-end security, reliability, location management and multicast communications could be addressed in the pervasive and ubiquitous environment. 1. Wireless and Mobile Infrastructure There are many major issues related to wireless and mobile infrastructure in the ubiquitous and pervasive computing environment. Since this infrastructure is likely to play a major role in how users are able to interact with ubiquitous applications and services, we believe that more research is necessary in deriving the specific role and requirements of wireless infrastructure. In general terms, the requirements could include an integrated or universal access to different wireless and mobile networks, support for group communications (multicast), reliable communications (dependable infrastructure), and interworking of these technologies. Many of these issues have not been addressed and we believe that these must be covered before the vision of ubiquitou
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