4G: Hype or reality

While the first 3G deliveries are soon due to realisation, new ideas about the next generation have emerged the papers and conferences. For example terms Systems Beyond 3G, The Next Generation and 4G have been used to define the next step. What does this all mean? Is it fair to speak about the 4G when the previous generation is not even in use yet? Are there some limits for the development? What kind of features can be expected in the future? This paper highlights these issues and gives some ideas about the hot topics and how the extreme targets could be achieved.