Real-time computational performance of advanced JRRM policies in B3G heterogeneous wireless systems

The future Beyond 3G wireless systems will be characterized by the coexistence of multiple Radio Access Technologies. In these heterogeneous systems, the coordinated use of the common radio resources is a challenging task, and efficient Joint Radio Resource Management (JRRM) techniques that guarantee adequate satisfaction levels to all users and maximize the system revenue need to be designed. To achieve the optimal solution to each situation, JRRM decisions are based on an increasing number of parameters and variables, and a key aspect in the design of these JRRM techniques is to achieve good computational performance to be applied in real hardware systems. This paper proposes a novel JRRM technique based on linear programming optimization, and its real-time computational cost is analysed to evaluate its implementation feasibility. In this study, DSPs commonly used in mobile base stations are considered to demonstrate its potential to be employed in Beyond 3G heterogeneous systems.