T02/1 Radio Resource Management in Heterogeneous Networks

This paper intends to provide an overview of the Radio Resource Management (RRM) problem and envisaged solutions in a Beyond 3G framework. The different functions related to the Common RRM, encompassing the responsibility to optimize the pool of available radio resources among a variety of Radio Access Technologies (RATs), are identified and the different degrees of interactions that can be envisaged among CRRM entity and the RRM entities at an individual RAT level are also detailed. Further, for a better understanding of the concepts, some sample examples accompanied by dynamic system level simulation results are presented. Technological advances and market developments in the wireless communications area have been astonishing during the last decade; they were mainly driven by the successful deployment of GSM (Global System for Mobile communications) networks from the European perspective. GSM currently evolves towards GPRS, a process much more complex and challenging than forecasted a few year