Radio access networks beyond 3G: a first comparison of architectures

We consider the role and possible architectures of access networks in systems beyond the current third generation. We consider the motivations for defining specialised infrastructure to support mobile radio access, and look at the various criteria for determining the scope of such systems. We then introduce and compare the access network architectures of four widely varied IST projects, BRAHMS, BRAIN/MIND, DRiVE and WINEGLASS. We compare the different approaches that these projects have taken, and conclude with a view on how this can provide a pointer to future access network architectures