Enhanced radio resource management introducing smart direct link concepts

The paper investigates an enhanced radio resource management scheme in centralised controlled radio cells. It thereby introduces a new scheduling approach for resource grants with a special focus on the appliance of direct terminal-to-terminal operation as offered by various upcoming wireless broadband communication systems. In order to obtain a more efficient use of available resources, solutions have to be found for how resources in self-organising radio systems can be used in parallel by applying direct link communication between mobile terminals. The decision about multiple assignments of the same resources is performed centrally with consideration of the interference situation within the cell. The combination of direct link communication and sophisticated scheduling under a central control is referred to as the application of a 'smart direct link' (SDiL). Performance simulations for this novel concept indicate large gains when applied to specific scenarios.