1 exploiting logical mobility in mobile computing middleware stefanos zachariadis http www cs ucl ac uk staff s joint work with cecilia mascolo and wolfgang emmerich department of computer science university college london gower street wc1e 6bt united kingdom 2 outline motivation introduction to case studies over physical limitations current approaches choosing a paradigm future 3 15 5 million pdas be shipped this year state the art hardware includes 400mhz x scale arm cpu 64mb ram integrated wireless connectivity 802 11b or bluetooth eg toshiba e740 2001 desktop shipments fell by laptop increased 10 4 reach 30 700 2005 11 b grow 55 annually through source gartner observed trends further decentralisation computers smaller faster more resources personal ubiquitous users are starting carry portable processing environments respectable ability networking is pivotal devices can connect various different types networks at situations ad hoc irda internet gsm gprs investigate use
